Txomin Lalanne
Julia Oyrer
Mark Farrant
P. Jesper Sjöström- 1Department of Biomedicine, Institute of Physiology, University of Basel, Basel, Switzerland
- 2The Florey Institute of Neuroscience and Mental Health, University of Melbourne, Parkville, VIC, Australia
- 3Department of Neuroscience, Physiology and Pharmacology, University College London, London, United Kingdom
- 4Centre for Research in Neuroscience, Department of Neurology and Neurosurgery, Brain Repair and Integrative Neuroscience Program, Montreal General Hospital, The Research Institute of the McGill University Health Centre, Montreal, QC, Canada
Calcium-permeable (CP) AMPA-type glutamate receptors (AMPARs) are known to mediate synaptic plasticity in several different interneuron (IN) types. Recent evidence suggests that CP-AMPARs are synapse-specifically expressed at excitatory connections onto a subset of IN types in hippocampus and neocortex. For example, CP-AMPARs are found at connections from pyramidal cells (PCs) to basket cells (BCs), but not to Martinotti cells (MCs). This synapse type-specific expression of CP-AMPARs suggests that synaptic dynamics as well as learning rules are differentially implemented in local circuits and has important implications not just in health but also in disease states such as epilepsy.
Introduction
AMPA-type glutamate receptors (AMPARs) are ligand-gated ion channels that mediate fast excitatory transmission throughout the CNS. They exist as homomeric or heteromeric assemblies of the pore-forming subunits GluA1, -2, -3, and -4, encoded by the genes, GRIA1-4 (Traynelis et al., 2010). Receptor heterogeneity is increased by RNA processing events, alternative splicing and adenosine-to-inosine (A-to-I) RNA editing (Penn and Greger, 2009), and by the association of the various AMPARs with different members of large pool of auxiliary proteins (Schwenk et al., 2009; von Engelhardt et al., 2010; Schwenk et al., 2012; Shanks et al., 2012). Importantly, differences in the core subunit and auxiliary protein content, as well as a variety of post-translational modifications, can considerably alter the trafficking and functional properties of the receptors (Traynelis et al., 2010; Jackson and Nicoll, 2011; Greger et al., 2017).
Although patterns of subunit expression and different inter-subunit affinities dictate that the majority of AMPARs in the brain are heteromeric assemblies containing GluA2, receptors lacking GluA2 also exist (Wenthold et al., 1996; Sans et al., 2003; Lu et al., 2009; Rozov et al., 2012). The GluA2 subunit plays a particularly significant role in dictating AMPAR ion selectivity and voltage dependence. RNA editing of GluA2 replaces a genomically encoded glutamine with a positively charged arginine at the Q/R site in the M2 re-entrant transmembrane loop that forms the lining of the channel pore. The positively charged arginine prevents the passage of Ca2+ ions (Hume et al., 1991; Sommer et al., 1991; Burnashev et al., 1992), thus AMPARs containing edited GluA2 are termed Ca2+ impermeable (CI). Conversely, the absence of GluA2, or lack of editing, gives rise to a subset of AMPARs that are Ca2+ permeable (CP) (Jonas et al., 1994; Brusa et al., 1995). CP-AMPARs exhibit voltage-dependent channel block by endogenous intracellular polyamines such as spermine, which greatly limits current flow at depolarized voltages (Bowie and Mayer, 1995; Donevan and Rogawski, 1995; Kamboj et al., 1995; Koh et al., 1995a) and thus intracellular spermine-dependent rectification is an oft-used proxy for Ca2+ permeability (but see Bowie, 2012). GluA2-lacking (CP-) AMPARs typically desensitize faster than GluA2-containing (CI-) AMPARs (Geiger et al., 1995; Angulo et al., 1997; Sobolevsky, 2015) and have a higher single-channel conductance (Swanson et al., 1997; Feldmeyer et al., 1999).
While less abundant than their CI counterparts, CP-AMPARs are nevertheless widespread and have often been observed at excitatory connections onto inhibitory neurons (INs), where they play several important roles as discussed below (Hestrin, 1993; Mahanty and Sah, 1998; Kullmann and Lamsa, 2007; Oren et al., 2009). However, it remains unclear whether CP-AMPAR expression is restricted to specific IN subtypes (Zeisel et al., 2015; Akgul and McBain, 2016; Tasic et al., 2016) or is rather a reflection of developmental origin (Matta et al., 2013). Here we review recent studies indicating cell-type-specific expression of CP-AMPARs in a subset of INs and discuss the functional implications in health and disease.
Known Roles of CP-AMPARs
Ca2+ is well known to play a key role in mediating synaptic plasticity (Sjöström and Nelson, 2002; Sjöström et al., 2008; Maheux et al., 2016). Consequently, CP-AMPARs are critical in regulating long-term changes in excitatory connections onto various IN types (Kullmann and Lamsa, 2007; Lamsa et al., 2007; Oren et al., 2009). Moreover, due to their voltage dependence being essentially opposite to that of NMDA receptors (NMDARs), CP-AMPARs may enable non-Hebbian plasticity at connections from PCs onto INs (Kullmann and Lamsa, 2007). For example, the induction of long-term potentiation (LTP) at excitatory inputs onto O-LM cells in the hippocampus requires presynaptic release of glutamate coincident with postsynaptic hyperpolarization, rather than the depolarization that is otherwise required for Hebbian plasticity. This non-Hebbian form of plasticity plays an important role in the hippocampal feedback circuit and may orchestrate the overall excitability of PCs (Kullmann and Lamsa, 2007). In contrast, a mechanism involving CP-AMPARs but leading to LTP of excitatory inputs onto INs in the absence of postsynaptic hyperpolarization has been observed in the basolateral amygdala (Mahanty and Sah, 1998), where excitatory synaptic transmission onto INs seems entirely meditated by CP-AMPARs. Here, tetanic stimulation leads to LTP in an NMDAR-independent yet Ca2+-dependent manner.
Specific IN types may also require CP-AMPARs to compartmentalize their response to excitatory inputs. In excitatory cells, dendritic spines serve as biochemical compartments, which promotes synapse specificity in long-term plasticity, which in turn ensures optimal information storage capacity (Goldberg et al., 2003; Soler-Llavina and Sabatini, 2006; Sjöström et al., 2008; Maheux et al., 2016). Although INs in general seem to have fewer spines than excitatory cells do, there appears to be a clear distinction among different classes of INs: spines are found at ∼7-fold higher density in somatostatin (Sst) than in parvalbumin (Pvalb)-expressing INs (Kawaguchi et al., 2006). Pvalb — which is highly expressed in BCs (Hof et al., 1999) — is a slow Ca2+-binding protein that contributes to the high endogenous Ca2+-buffering capacity of this cell type (Lee et al., 2000; Goldberg et al., 2003; Aponte et al., 2008). This high Ca2+ buffering capacity helps to compartmentalize dendritic Ca2+ signals in BCs without interfering with the rapid and localized CP-AMPAR-mediated Ca2+ transients (Goldberg et al., 2003; Aponte et al., 2008). To overcome the lack of dendritic spine-dependent Ca2+ compartmentalization, BCs might thus rely on the combined effects of CP-AMPARs fast kinetics and Pvalb expression. Consistent with the view that spines are particularly associated with a need for compartmentalization of relatively slow Ca2+ transients mediated by NMDARs, recent findings show that NMDARs are enriched in synapses onto spines as compared to dendrites in Pvalb-positive INs of mouse visual cortex (Sancho and Bloodgood, 2018 Cell Reports). Perhaps this differential localization of NMDARs and AMPARs also ties it in with their engagement in different signaling pathways. Even so, the more rapid kinetics of CP-AMPARs may ensure that compartmentalization by spines is not necessary.
CP-AMPARs are Located at Specific Synapse Types
MCs and BCs, two well-studied IN classes, are likely to take on distinctive roles in the neocortical microcircuit. While strongly facilitating excitatory inputs onto the distal dendrite-targeting MCs make them operate as high-pass filters, enabling delayed-onset feedback inhibition (Silberberg and Markram, 2007), the depressing excitatory inputs onto soma-targeting BCs make them act as low-pass filters (Blackman et al., 2013), providing early onset feed-forward inhibition of PCs (Kawaguchi and Kubota, 1997; Buchanan et al., 2012; Figure 1). We found that the specific expression of CP-AMPARs at PC to BC connections contributes significantly to the rapid feed-forward inhibition onto PCs (Lalanne et al., 2016), resulting in a shortened integrative time window for excitation (Pouille and Scanziani, 2001; Mittmann et al., 2005).
FIGURE 1. CP-AMPARs are synapse-type-specifically expressed in cortical layer 5. (A) As indicated by CP in green, CP-AMPARs are expressed at synapses from neocortical layer-5 pyramidal cells (“PC,” black) onto basket cells (“BC,” red) but not onto Martinotti cells (“MC,” blue) as indicated by CI in red (see Lalanne et al., 2016). Because CP-AMPARs have faster kinetics, this differential expression helps ensure that BC-mediated somatic inhibition of PCs is fast. However, fast CP-AMPARs would counteract the delayed-onset, dendritic MC-mediated feedback inhibition of PCs (Silberberg and Markram, 2007; Buchanan et al., 2012), which may help explain this differential CP-AMPAR expression. Interestingly, this expression pattern is the precise opposite to that of presynaptic NMDA receptors (Buchanan et al., 2012). (B) In the hippocampal CA1 circuit, CP-AMPARs are found at excitatory connections onto both BCs and O-LM cells. Interestingly, Szabo et al. (2012) also identified CP-AMPARs at PC connections onto nitric oxide synthase-expressing hippocampal INs but not onto cholecystokinin-expressing INs. Excitatory synapses are indicated by open triangles, while open circles denote inhibitory synapses. Modified from (Blackman et al., 2013) with appropriate permission.
Using a combination of immunolabelling, paired recording, AMPA uncaging, and pharmacology, we demonstrated expression of CP-AMPARs at excitatory inputs onto BCs but not MCs (Lalanne et al., 2016). Immunolabelling showed that GluA2 was almost absent from the somata of Pvalb-expressing cells, contrasting with its strong presence in the somata of Sst-positive INs and even stronger labeling in PCs. We confirmed this observation using paired recordings of connections between PCs and both IN types: unlike those in MCs, AMPAR-mediated currents in BCs were inwardly rectifying (as demonstrated by their current-voltage relationships) and were sensitive to polyamines (Figure 2; Lalanne et al., 2016). The synapse-specific expression of CP-AMPARs was further supported by the faster decay kinetics of currents in BCs compared to MCs.
FIGURE 2. Paired recordings reveal AMPAR rectification at PC-BC but not PC-MC synapses (A) 2-photon microscopy maximum intensity projection of a quadruple recording where a connection from morphologically identified cell 1 (PC) to cell 3 (BC) was measured. Scale bar: 50 μm. (B) AMPAR responses to PC 1 stimulation in BC 3 were recorded at various holding potentials (from –60 to + 60 mV). Inward rectification in the presence of intracellular spermine indicated the presence of CP-AMPARs. Scale bars: 10 ms, 100 pA. (C) In another paired recording, the AMPAR currents recorded from an MC in response to stimulation of the presynaptic PC did not show inward rectification, suggesting the absence of CP-AMPARs. Scale bars: 50 pA. (D) The cell-specific difference in rectification was robust, as shown by the pooled values of rectification index (RI) for PC-BC (red) and PC-MC (blue) paired recordings. Modified from (Lalanne et al., 2016) with appropriate permissions.
The specific expression of CP-AMPARs in BCs, or at least in INs that express Pvalb or exhibit fast-spiking (two key properties of BCs), has been observed in several studies conducted in both neocortical and hippocampal circuits. In the rat, outside-out somatic patches from both BCs in dentate gyrus and fast-spiking INs in the neocortex showed inwardly rectifying currents with fast kinetics (Geiger et al., 1995; Koh et al., 1995b; Angulo et al., 1997). When measured, a low abundance of GluA2 mRNA correlated with these markers of CP-AMPARs expression (Geiger et al., 1995; Angulo et al., 1997). Wang and Gao (2010) also observed inward rectification of excitatory inputs onto most fast-spiking INs in the rat prefrontal cortex, presumably reflecting the expression of CP-AMPARs (also see Tao et al., 2013). Most studies of different brain areas have thus identified CP-AMPARs in BCs or at least in INs showing key BC-like properties.
In the hippocampus however, there is also convincing evidence that developmental origin rather than IN type alone determines whether or not CP-AMPARs are expressed (Matta et al., 2013). Here, medial ganglionic eminence derived IN synapses are dominated by GluA2-lacking AMPARs, whereas caudal ganglionic eminence derived IN synapses had GluA2-containing AMPARs (Matta et al., 2013) (also see Pelkey et al., 2017).
Another notable exception is the oriens-lacunosum moleculare (O-LM) inhibitory cell type of the hippocampus, which is not fast-spiking yet has been shown to express functional CP-AMPARs (Figure 1B). Although the O-LM cell type is typically thought of as the functional hippocampal homologue of the neocortical MC, there are considerable differences when it comes to molecular markers (Pelkey et al., 2017). For example, O-LM cells comprise only about 40% of Sst-expressing INs (Oliva et al., 2000; Ferraguti et al., 2004), and a subset of O-LM cells are in fact positive for Pvalb (Ferraguti et al., 2004; Chittajallu et al., 2013). In neocortex however, Sst chiefly labels MCs, and Pvalb and Sst labels are essentially mutually exclusive (Toledo-Rodriguez et al., 2005; Pelkey et al., 2017). That hippocampal O-LM cells but not neocortical MCs express CP-AMPARs widely may in other words be yet another difference in terms of molecular properties. The functional implications of this difference between MCs and O-LM cells remain unclear.
Interestingly, high-frequency stimulation was not sufficient to induce LTP at excitatory inputs onto O-LM cells, while a concomitant hyperpolarization of the postsynaptic IN was required for potentiation (Oren et al., 2009). Ca2+ entry at the synapse was presumably mediated by CP-AMPARs due to the alleviation of the voltage-dependent polyamine block. In contrast, studies in BCs have shown that LTP of excitatory inputs, while also mediated by CP-AMPARs, did not require postsynaptic hyperpolarization (Mahanty and Sah, 1998; Camiré and Topolnik, 2014). Interestingly, Camiré and Topolnik (2014) demonstrated the involvement of internal Ca2+ stores in mediating LTP in the absence of postsynaptic hyperpolarization. Because this mechanism was not identified in O-LM cells, CP-AMPARs may thus play a role in mediating LTP in different cell types via distinct signaling pathways.
The emerging picture is not black-and-white, but quite nuanced. In some brain regions and at certain developmental stages, CP-AMPAR expression goes with cell and synapse type (Lalanne et al., 2016; Figures 1A, 2), but this may not hold true in other brain regions (Szabo et al., 2012; Figure 1B). Yet again, at other time points, factors such as developmental origin may play a relatively more dominant role in determining CP-AMPAR expression patterns (Matta et al., 2013).
Functional Implications in Health and Disease
The regulation of CP-AMPAR expression implies specific functional relevance, which in turn suggests that CP-AMPAR dysregulation is involved in pathology. Here below, we briefly discuss the functional role of CP-AMPARs in health and disease.
CP-AMPARs have been implicated in controlling synaptic short-term dynamics. Lu et al. (2014) reported the presence of CP-AMPARs at local but not at long-range inputs to Pvalb-positive INs in L2/3 of the mouse visual cortex. Interestingly, they observed a selective developmental decrease in short-term depression of these local inputs, which correlated with a developmentally increased ratio of CP- to CI-AMPARs. This was supported by rectifying current-voltage relationships and a higher sensitivity to the CP-AMPAR blocker 1-naphthyl acetyl spermine (NASPM) at mature (postnatal day 32–34) short-range excitatory synapses onto Pvalb-positive INs, in comparison to linear current-voltage relationships and less sensitivity to NASPM at both short- and long-range synapses in younger animals (postnatal day 17–19). Furthermore, blocking CP-AMPARs strongly affected the short-term dynamics of mature but not juvenile short-range connections, by rendering them more depressing. During high-frequency stimulation, CP-AMPARs are enhanced by use-dependent relief from polyamine block (Rozov and Burnashev, 1999; Rozov et al., 2001). Polyamine-dependent facilitation of CP-AMPARs thus counteracts short-term depression at excitatory synapses. This explains how blockade of postsynaptic CP-AMPARs can somewhat counterintuitively increase short-term depression, which is typically attributed to presynaptic mechanisms (Abbott and Regehr, 2004; Blackman et al., 2013).
One intriguing aspect of the study by Lu et al. (2014) – which echoes the findings of Toth and McBain (1998) in the hippocampus – is the suggestion that different inputs onto a single Pvalb IN can activate different subtypes of AMPARs. This notion, that plasticity is regulated at the synaptic level, has been termed synapse-type-specific plasticity (STSP) (Larsen and Sjöström, 2015), and may pertain to short as well as long-term plasticity (Blackman et al., 2013). STSP should thus not be confused with synapse specificity in long-term plasticity, which maximizes information storage by preventing spread of connective strengthening or weakening to neighboring synapses (Goldberg et al., 2003; Soler-Llavina and Sabatini, 2006; Sjöström et al., 2008; Maheux et al., 2016). The synapse-type-specific developmental decrease of short-term depression observed by Lu et al. (2014) may reflect a key role of CP-AMPARs in neuronal maturation via STSP (Larsen and Sjöström, 2015).
In our study (Lalanne et al., 2016), all experiments were carried out using tissue from mice aged from P14-P21, a relatively narrow age range. In many cell types, the expression of CP-AMPARs has been found to vary with development, as determined by immunolabelling, electrophysiology and/or pharmacology. Unfortunately, no clear-cut universal pattern is apparent: different types of neurons and brain regions have different developmental profiles. For example, several studies have demonstrated a developmental decrease in the expression of CP-AMPARs (Kumar et al., 2002; Shin et al., 2005; Osswald et al., 2007; Soto et al., 2007; Lu et al., 2014) while one has shown expression to fluctuate with age (Wang and Gao, 2010). Of greatest relevance to our study, in Pvalb-positive INs of the mouse visual cortex the expression of CP-AMPARs has been shown to be elevated at P31–P34 when compared to that at P17–P19 (Lu et al., 2014). Clearly, further studies are required to resolve the developmental regulation of CP-AMPAR expression.
As mentioned earlier, CP-AMPAR developmental regulation suggests a possible contribution to pathology when dysregulated. Indeed, this receptor type has long been suggested to play crucial roles in excitotoxicity and cell death (for reviews, see Liu and Zukin, 2007; Wright and Vissel, 2012; Henley and Wilkinson, 2016). In particular, an increased expression of CP-AMPARs following neurological insult may enhance glutamate toxicity due to elevated Ca2+ influx, a concept known as the GluA2 hypothesis (Pellegrini-Giampietro et al., 1997). For example, following seizures of various types, GluA2 expression is decreased (Prince et al., 2000; Rajasekaran et al., 2012; Lorgen et al., 2017). Although lowered GluA2 expression does not necessarily in itself lead to cell death (Wiltgen et al., 2010), an increase of CP-AMPAR-dependent Ca2+ influx was shown in CA1 hippocampal neurons following hypoxia-induced neonatal seizures (Lippman-Bell et al., 2016). Antagonizing AMPARs with NBQX after in-vivo hypoxia prevented both expression of GluA2-lacking AMPARs and the enhanced Ca2+ influx (Lippman-Bell et al., 2016). Interestingly, post-hypoxia induction of CP-AMPAR expression correlated with an impairment of LTD, which was restored by in-vivo administration of NBQX (Lippman-Bell et al., 2016). Since LTD requires relatively low Ca2+ influx, this result is consistent with excess Ca2+ influx caused by the increased CP-AMPARs expression following hypoxia. By sequentially blocking CP-AMPARs, NMDARs or L-type Ca2+ channels, the authors also demonstrated that the excessive Ca2+ influx is primarily due to the expression of CP-AMPARs.
Conclusion and Future Directions
As reviewed above, our work revealed that synapse-specific CP-AMPAR expression at PC-to-BC connections (Figure 1) helps to further speed up BC inhibition, because of the rapid kinetics of the CP-AMPAR-mediated currents (Lalanne et al., 2016). This implies that CP-AMPARs not only mediate synaptic plasticity (Kullmann and Lamsa, 2007), but are also important for proper information transfer across synapses. This conclusion echoes that reached concerning NMDARs, which are well-known for their role in mediating Hebbian plasticity and memory formation (Sjöström and Nelson, 2002; Sjöström et al., 2008; Nabavi et al., 2014; Maheux et al., 2016), but which also play an important role in neurotransmission and in functional computations of neocortical microcircuits (Salt, 1986; Schiller et al., 2000; Lavzin et al., 2012). Interestingly, we found that unlike CP-AMPARs, postsynaptic NMDARs were relatively uniformly and not synapse-specifically expressed in neocortical layer 5 (Lalanne et al., 2016). In contrast, a study by Le Roux et al. (2013) revealed a synapse-type-specific expression of postsynaptic NMDARs: while excitatory feed-forward connections onto Pvalb-expressing CA1 INs expressed few NMDARs, feed-back connections onto the same INs expressed high levels of NMDARs, perhaps indicative of a difference between neocortex and hippocampus. On the other hand, presynaptic NMDARs (preNMDARs) are expressed in a synapse-specific manner in neocortical circuits, opposite and complementary to that of CP-AMPARs, so that PC-MC but not PC-BC connections possess preNMDARs (Buchanan et al., 2012). This arrangement makes good sense, since preNMDARs help wind up PC-MC excitatory connections during sustained high-frequency firing by boosting the replenishment of the readily releasable pool of vesicles (Abrahamsson et al., 2017). A functional image of differential inhibitory signaling emerges: while preNMDARs at PC-MC synapses help enable late-onset and sustained inhibition of PCs, CP-AMPARs at PC-BC connections promote brief, rapid-onset inhibition of PCs.
The notion that synaptic properties such as long- and short-term plasticity depend on synapse type, STSP, has gained increasing interest in recent years (Blackman et al., 2013; Larsen and Sjöström, 2015; Nusser, 2018). This idea, however, has been around since the 1970s, when, for example, it was shown that synapses of the same axon but with differential release properties innervated different muscles (Parnas, 1972). STSP has subsequently been reported in hippocampus (Scanziani et al., 1998; Toth et al., 2000; Pouille and Scanziani, 2004; Sylwestrak and Ghosh, 2012; Neubrandt et al., 2018), cerebellum (Bao et al., 2010), and neocortex (Thomson, 1997; Markram et al., 1998; Reyes et al., 1998). As a general principle, soma-targeting BCs receive short-term depressing excitatory drive, while dendrite-targeting MC-like INs receive facilitating excitatory inputs (Blackman et al., 2013). This differential arrangement of short-term plasticity separates early- and late-onset inhibition onto soma and dendrites, respectively, of PCs (Pouille and Scanziani, 2004). Future research may reveal how synapse-type-specific expression and functioning of receptors such as CP-AMPARs (Lalanne et al., 2016) and preNMDARs (Buchanan et al., 2012) or down-stream signaling proteins such as RIM1 or JNK2 (Abrahamsson et al., 2017) control STSP.
The synapse-type-specific expression of CP-AMPARs found in neocortical microcircuits (Lalanne et al., 2016) appears to generalize to other brain regions such as hippocampus (Lamsa et al., 2007; Nissen et al., 2010), striatum (Gittis et al., 2010; Gittis et al., 2011) and cerebellum (Soler-Llavina and Sabatini, 2006), but additional work is needed to determine if this holds true at all developmental time points. Although a link between CP-AMPARs and specific forms of long-term plasticity has been quite firmly established (Kullmann and Lamsa, 2007; Lamsa et al., 2007; Nissen et al., 2010; Szabo et al., 2012), it will be important to understand how synapse-type-specific CP-AMPAR expression impacts circuit remodeling, as well as what the functional consequences are, in health as well as in disease. In particular, the association of synapse-type-specific CP-AMPAR expression with epilepsy and excitotoxicity deserves further exploration. Although the GluA2 hypothesis classically refers to the involvement in disease of principal cells (Pellegrini-Giampietro et al., 1997), there is no a priori reason to assume that this hypothesis cannot apply to INs. A link between STSP, CP-AMPARs in INs, and pathology thus beckons.
Author Contributions
All authors listed have made a substantial, direct and intellectual contribution to the work, and approved it for publication.
Funding
This work was supported by CFI LOF 28331 (PJS), CIHR OG 126137 (PJS), CIHR NIA 288936 (PJS), FRSQ CB 254033 (PJS), NSERC DG 418546-2 (PJS), NSERC DG 2017-04730 (PJS), NSERC DAS 2017-507818 (PJS), MRC MR/J002976/1 (MF), and MRC MR/J012998/1 (MF).
Conflict of Interest Statement
The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.
Acknowledgments
We thank Alanna Watt, Gilad Silberberg, and Ian Coombs for help and useful discussions.
References
Abbott, L. F., and Regehr, W. G. (2004). Synaptic computation. Nature 431, 796–803. doi: 10.1038/nature03010
Abrahamsson, T., Chou, C. Y. C., Li, S. Y., Mancino, A., Costa, R. P., Brock, J. A., et al. (2017). Differential regulation of evoked and spontaneous release by presynaptic NMDA receptors. Neuron 96:e835. doi: 10.1016/j.neuron.2017.09.030
Akgul, G., and McBain, C. J. (2016). Diverse roles for ionotropic glutamate receptors on inhibitory interneurons in developing and adult brain. J. Physiol. 594, 5471–5490. doi: 10.1113/JP271764
Angulo, M. C., Lambolez, B., Audinat, E., Hestrin, S., and Rossier, J. (1997). Subunit composition, kinetic, and permeation properties of AMPA receptors in single neocortical nonpyramidal cells. J. Neurosci. 17, 6685–6696. doi: 10.1523/JNEUROSCI.17-17-06685.1997
Aponte, Y., Bischofberger, J., and Jonas, P. (2008). Efficient Ca2 + buffering in fast-spiking basket cells of rat hippocampus. J. Physiol. 586, 2061–2075. doi: 10.1113/jphysiol.2007.147298
Bao, J., Reim, K., and Sakaba, T. (2010). Target-dependent feedforward inhibition mediated by short-term synaptic plasticity in the cerebellum. J. Neurosci. 30, 8171–8179. doi: 10.1523/JNEUROSCI.0276-10.2010
Blackman, A. V., Abrahamsson, T., Costa, R. P., Lalanne, T., and Sjöström, P. J. (2013). Target cell-specific short-term plasticity in local circuits. Front. Synaptic Neurosci. 5:11. doi: 10.3389/fnsyn.2013.00011
Bowie, D. (2012). Redefining the classification of AMPA-selective ionotropic glutamate receptors. J. Physiol. 590, 49–61. doi: 10.1113/jphysiol.2011.221689
Bowie, D., and Mayer, M. L. (1995). Inward rectification of both AMPA and kainate subtype glutamate receptors generated by polyamine-mediated ion channel block. Neuron 15, 453–462. doi: 10.1016/0896-6273(95)90049-7
Brusa, R., Zimmermann, F., Koh, D. S., Feldmeyer, D., Gass, P., Seeburg, P. H., et al. (1995). Early-onset epilepsy and postnatal lethality associated with an editing-deficient GluR-B allele in mice. Science 270, 1677–1680. doi: 10.1126/science.270.5242.1677
Buchanan, K. A., Blackman, A. V., Moreau, A. W., Elgar, D., Costa, R. P., Lalanne, T., et al. (2012). Target-specific expression of presynaptic NMDA receptors in neocortical microcircuits. Neuron 75, 451–466. doi: 10.1016/j.neuron.2012.06.017
Burnashev, N., Monyer, H., Seeburg, P. H., and Sakmann, B. (1992). Divalent ion permeability of AMPA receptor channels is dominated by the edited form of a single subunit. Neuron 8, 189–198. doi: 10.1016/0896-6273(92)90120-3
Camiré, O., and Topolnik, L. (2014). Dendritic calcium nonlinearities switch the direction of synaptic plasticity in fast-spiking interneurons. J. Neurosci. 34, 3864–3877. doi: 10.1523/JNEUROSCI.2253-13.2014
Chittajallu, R., Craig, M. T., McFarland, A., Yuan, X., Gerfen, S., Tricoire, L., et al. (2013). Dual origins of functionally distinct O-LM interneurons revealed by differential 5-HT(3A)R expression. Nat. Neurosci. 16, 1598–1607. doi: 10.1038/nn.3538
Donevan, S. D., and Rogawski, M. A. (1995). Intracellular polyamines mediate inward rectification of Ca2 + -permeable alpha-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid receptors. Proc. Natl. Acad. Sci. U.S.A. 92, 9298–9302. doi: 10.1073/pnas.92.20.9298
Feldmeyer, D., Kask, K., Brusa, R., Kornau, H. C., Kolhekar, R., Rozov, A., et al. (1999). Neurological dysfunctions in mice expressing different levels of the Q/R site-unedited AMPAR subunit GluR-B. Nat. Neurosci. 2, 57–64. doi: 10.1038/4561
Ferraguti, F., Cobden, P., Pollard, M., Cope, D., Shigemoto, R., Watanabe, M., et al. (2004). Immunolocalization of metabotropic glutamate receptor 1alpha (mGluR1alpha) in distinct classes of interneuron in the CA1 region of the rat hippocampus. Hippocampus 14, 193–215. doi: 10.1002/hipo.10163
Geiger, J. R., Melcher, T., Koh, D. S., Sakmann, B., Seeburg, P. H., Jonas, P., et al. (1995). Relative abundance of subunit mRNAs determines gating and Ca2 + permeability of AMPA receptors in principal neurons and interneurons in rat CNS. Neuron 15, 193–204. doi: 10.1016/0896-6273(95)90076-4
Gittis, A. H., Leventhal, D. K., Fensterheim, B. A., Pettibone, J. R., Berke, J. D., and Kreitzer, A. C. (2011). Selective inhibition of striatal fast-spiking interneurons causes dyskinesias. J. Neurosci. 31, 15727–15731. doi: 10.1523/JNEUROSCI.3875-11.2011
Gittis, A. H., Nelson, A. B., Thwin, M. T., Palop, J. J., and Kreitzer, A. C. (2010). Distinct roles of GABAergic interneurons in the regulation of striatal output pathways. J. Neurosci. 30, 2223–2234. doi: 10.1523/JNEUROSCI.4870-09.2010
Goldberg, J. H., Tamas, G., Aronov, D., and Yuste, R. (2003). Calcium microdomains in aspiny dendrites. Neuron 40, 807–821. doi: 10.1016/S0896-6273(03)00714-1
Greger, I. H., Watson, J. F., and Cull-Candy, S. G. (2017). Structural and functional architecture of AMPA-type glutamate receptors and their auxiliary proteins. Neuron 94, 713–730. doi: 10.1016/j.neuron.2017.04.009
Henley, J. M., and Wilkinson, K. A. (2016). Synaptic AMPA receptor composition in development, plasticity, and disease. Nat. Rev. Neurosci. 17, 337–350. doi: 10.1038/nrn.2016.37
Hestrin, S. (1993). Different glutamate receptor channels mediate fast excitatory synaptic currents in inhibitory and excitatory cortical neurons. Neuron 11, 1083–1091. doi: 10.1016/0896-6273(93)90221-C
Hof, P. R., Glezer, I. I., Conde, F., Flagg, R. A., Rubin, M. B., Nimchinsky, E. A., et al. (1999). Cellular distribution of the calcium-binding proteins parvalbumin, calbindin, and calretinin in the neocortex of mammals: phylogenetic and developmental patterns. J. Chem. Neuroanat. 16, 77–116. doi: 10.1016/S0891-0618(98)00065-9
Hume, R. I., Dingledine, R., and Heinemann, S. F. (1991). Identification of a site in glutamate receptor subunits that controls calcium permeability. Science 253, 1028–1031. doi: 10.1126/science.1653450
Jackson, A. C., and Nicoll, R. A. (2011). The expanding social network of ionotropic glutamate receptors: TARPs and other transmembrane auxiliary subunits. Neuron 70, 178–199. doi: 10.1016/j.neuron.2011.04.007
Jonas, P., Racca, C., Sakmann, B., Seeburg, P. H., and Monyer, H. (1994). Differences in Ca2 + permeability of AMPA-type glutamate receptor channels in neocortical neurons caused by differential GluR-B subunit expression. Neuron 12, 1281–1289. doi: 10.1016/0896-6273(94)90444-8
Kamboj, S. K., Swanson, G. T., and Cull-Candy, S. G. (1995). Intracellular spermine confers rectification on rat calcium-permeable AMPA and kainate receptors. J. Physiol. 486(Pt 2), 297–303.
Kawaguchi, Y., Karube, F., and Kubota, Y. (2006). Dendritic branch typing and spine expression patterns in cortical nonpyramidal cells. Cereb. Cortex 16, 696–711. doi: 10.1093/cercor/bhj015
Kawaguchi, Y., and Kubota, Y. (1997). GABAergic cell subtypes and their synaptic connections in rat frontal cortex. Cereb. Cortex 7, 476–486. doi: 10.1093/cercor/7.6.476
Koh, D. S., Burnashev, N., and Jonas, P. (1995a). Block of native Ca2 + -permeable AMPA receptors in rat brain by intracellular polyamines generates double rectification. J. Physiol. 486, 305–312.
Koh, D. S., Geiger, J. R., Jonas, P., and Sakmann, B. (1995b). Ca2 + -permeable AMPA and NMDA receptor channels in basket cells of rat hippocampal dentate gyrus. J. Physiol. 485, 383–402.
Kullmann, D. M., and Lamsa, K. P. (2007). Long-term synaptic plasticity in hippocampal interneurons. Nat. Rev. Neurosci. 8, 687–699. doi: 10.1038/nrn2207
Kumar, S. S., Bacci, A., Kharazia, V., and Huguenard, J. R. (2002). A developmental switch of AMPA receptor subunits in neocortical pyramidal neurons. J. Neurosci. 22, 3005–3015. doi: 10.1523/JNEUROSCI.22-08-03005.2002
Lalanne, T., Oyrer, J., Mancino, A., Gregor, E., Chung, A., Huynh, L., et al. (2016). Synapse-specific expression of calcium-permeable AMPA receptors in neocortical layer 5. J. Physiol. 594, 837–861. doi: 10.1113/JP271394
Lamsa, K. P., Heeroma, J. H., Somogyi, P., Rusakov, D. A., and Kullmann, D. M. (2007). Anti-Hebbian long-term potentiation in the hippocampal feedback inhibitory circuit. Science 315, 1262–1266. doi: 10.1126/science.1137450
Larsen, R. S., and Sjöström, P. J. (2015). Synapse-type-specific plasticity in local circuits. Curr. Opin. Neurobiol. 35, 127–135. doi: 10.1016/j.conb.2015.08.001
Lavzin, M., Rapoport, S., Polsky, A., Garion, L., and Schiller, J. (2012). Nonlinear dendritic processing determines angular tuning of barrel cortex neurons in vivo. Nature 490, 397–401. doi: 10.1038/nature11451
Le Roux, N., Cabezas, C., Bohm, U. L., and Poncer, J. C. (2013). Input-specific learning rules at excitatory synapses onto hippocampal parvalbumin-expressing interneurons. J. Physiol. 591, 1809–1822. doi: 10.1113/jphysiol.2012.245852
Lee, S. H., Rosenmund, C., Schwaller, B., and Neher, E. (2000). Differences in Ca2 + buffering properties between excitatory and inhibitory hippocampal neurons from the rat. J. Physiol. 525, 405–418. doi: 10.1111/j.1469-7793.2000.t01-3-00405.x
Lippman-Bell, J. J., Zhou, C., Sun, H., Feske, J. S., and Jensen, F. E. (2016). Early-life seizures alter synaptic calcium-permeable AMPA receptor function and plasticity. Mol. Cell. Neurosci. 76, 11–20. doi: 10.1016/j.mcn.2016.08.002
Liu, S. J., and Zukin, R. S. (2007). Ca2 + -permeable AMPA receptors in synaptic plasticity and neuronal death. Trends Neurosci. 30, 126–134. doi: 10.1016/j.tins.2007.01.006
Lorgen, J. O., Egbenya, D. L., Hammer, J., and Davanger, S. (2017). PICK1 facilitates lasting reduction in GluA2 concentration in the hippocampus during chronic epilepsy. Epilepsy Res. 137, 25–32. doi: 10.1016/j.eplepsyres.2017.08.012
Lu, J., Tucciarone, J., Lin, Y., and Huang, Z. J. (2014). Input-specific maturation of synaptic dynamics of parvalbumin interneurons in primary visual cortex. PNAS 111, 16895–16900. doi: 10.1073/pnas.1400694111
Lu, W., Shi, Y., Jackson, A. C., Bjorgan, K., During, M. J., Sprengel, R., et al. (2009). Subunit composition of synaptic AMPA receptors revealed by a single-cell genetic approach. Neuron 62, 254–268. doi: 10.1016/j.neuron.2009.02.027
Mahanty, N. K., and Sah, P. (1998). Calcium-permeable AMPA receptors mediate long-term potentiation in interneurons in the amygdala. Nature 394, 683–687. doi: 10.1038/29312
Maheux, J., Froemke, R. C., and Sjöström, P. J. (2016). “Functional plasticity at dendritic synapses,” in Dendrites, eds G. Stuart, N. Spruston, and M. Häusser (Oxford: Oxford University Press), 465–498.
Markram, H., Wang, Y., and Tsodyks, M. (1998). Differential signaling via the same axon of neocortical pyramidal neurons. PNAS 95, 5323–5328. doi: 10.1073/pnas.95.9.5323
Matta, J. A., Pelkey, K. A., Craig, M. T., Chittajallu, R., Jeffries, B. W., and McBain, C. J. (2013). Developmental origin dictates interneuron AMPA and NMDA receptor subunit composition and plasticity. Nat. Neurosci. 16, 1032–1041. doi: 10.1038/nn.3459
Mittmann, W., Koch, U., and Hausser, M. (2005). Feed-forward inhibition shapes the spike output of cerebellar Purkinje cells. J. Physiol. 563, 369–378. doi: 10.1113/jphysiol.2004.075028
Nabavi, S., Fox, R., Proulx, C. D., Lin, J. Y., Tsien, R. Y., and Malinow, R. (2014). Engineering a memory with LTD and LTP. Nature 511, 348–352. doi: 10.1038/nature13294
Neubrandt, M., Janos Olah, V., Brunner, J., Marosi, E., Soltesz, I., and Szabadics, J. (2018). Single bursts of individual granule cells functionally rearrange feed-forward inhibition. J. Neurosci. 38, 1711–1724. doi: 10.1523/JNEUROSCI.1595-17.2018
Nissen, W., Szabo, A., Somogyi, J., Somogyi, P., and Lamsa, K. P. (2010). Cell type-specific long-term plasticity at glutamatergic synapses onto hippocampal interneurons expressing either parvalbumin or CB1 cannabinoid receptor. J. Neurosci. 30, 1337–1347. doi: 10.1523/JNEUROSCI.3481-09.2010
Nusser, Z. (2018). Creating diverse synapses from the same molecules. Curr. Opin. Neurobiol. 51, 8–15. doi: 10.1016/j.conb.2018.01.001
Oliva, A. A. Jr., Jiang, M., Lam, T., Smith, K. L., and Swann, J. W. (2000). Novel hippocampal interneuronal subtypes identified using transgenic mice that express green fluorescent protein in GABAergic interneurons. J. Neurosci. 20, 3354–3368. doi: 10.1523/JNEUROSCI.20-09-03354.2000
Oren, I., Nissen, W., Kullmann, D. M., Somogyi, P., and Lamsa, K. P. (2009). Role of ionotropic glutamate receptors in long-term potentiation in rat hippocampal CA1 oriens-lacunosum moleculare interneurons. J. Neurosci. 29, 939–950. doi: 10.1523/JNEUROSCI.3251-08.2009
Osswald, I. K., Galan, A., and Bowie, D. (2007). Light triggers expression of philanthotoxin-insensitive Ca2 + -permeable AMPA receptors in the developing rat retina. J. Physiol. 582, 95–111. doi: 10.1113/jphysiol.2007.127894
Parnas, I. (1972). Differential block at high frequency of branches of a single axon innervating two muscles. J. Neurophysiol. 35, 903–914. doi: 10.1152/jn.1972.35.6.903
Pelkey, K. A., Chittajallu, R., Craig, M. T., Tricoire, L., Wester, J. C., and McBain, C. J. (2017). Hippocampal GABAergic inhibitory interneurons. Physiol. Rev. 97, 1619–1747. doi: 10.1152/physrev.00007.2017
Pellegrini-Giampietro, D. E., Gorter, J. A., Bennett, M. V., and Zukin, R. S. (1997). The GluR2 (GluR-B) hypothesis: Ca(2 + )-permeable AMPA receptors in neurological disorders. Trends Neurosci. 20, 464–470. doi: 10.1016/S0166-2236(97)01100-4
Penn, A. C., and Greger, I. H. (2009). Sculpting AMPA receptor formation and function by alternative RNA processing. RNA Biol. 6, 517–521. doi: 10.4161/rna.6.5.9552
Pouille, F., and Scanziani, M. (2001). Enforcement of temporal fidelity in pyramidal cells by somatic feed-forward inhibition. Science 293, 1159–1163. doi: 10.1126/science.1060342
Pouille, F., and Scanziani, M. (2004). Routing of spike series by dynamic circuits in the hippocampus. Nature 429, 717–723. doi: 10.1038/nature02615
Prince, H. C., Tzingounis, A. V., Levey, A. I., and Conn, P. J. (2000). Functional downregulation of GluR2 in piriform cortex of kindled animals. Synapse 38, 489–498. doi: 10.1002/1098-2396(20001215)38:4<489::AID-SYN15>3.0.CO;2-N
Rajasekaran, K., Todorovic, M., and Kapur, J. (2012). Calcium-permeable AMPA receptors are expressed in a rodent model of status epilepticus. Ann. Neurol. 72, 91–102. doi: 10.1002/ana.23570
Reyes, A., Lujan, R., Rozov, A., Burnashev, N., Somogyi, P., and Sakmann, B. (1998). Target-cell-specific facilitation and depression in neocortical circuits. Nat. Neurosci. 1, 279–285. doi: 10.1038/1092
Rozov, A., and Burnashev, N. (1999). Polyamine-dependent facilitation of postsynaptic AMPA receptors counteracts paired-pulse depression. Nature 401, 594–598. doi: 10.1038/44151
Rozov, A., Burnashev, N., Sakmann, B., and Neher, E. (2001). Transmitter release modulation by intracellular Ca2 + buffers in facilitating and depressing nerve terminals of pyramidal cells in layer 2/3 of the rat neocortex indicates a target cell-specific difference in presynaptic calcium dynamics. J. Physiol. 531, 807–826. doi: 10.1111/j.1469-7793.2001.0807h.x
Rozov, A., Sprengel, R., and Seeburg, P. H. (2012). GluA2-lacking AMPA receptors in hippocampal CA1 cell synapses: evidence from gene-targeted mice. Front. Mol. Neurosci. 5:22. doi: 10.3389/fnmol.2012.00022
Salt, T. E. (1986). Mediation of thalamic sensory input by both NMDA receptors and non-NMDA receptors. Nature 322, 263–265. doi: 10.1038/322263a0
Sancho, L., and Bloodgood, B. L. (2018). Functional distinctions between spine and dendritic synapses made onto parvalbumin-positive interneurons in mouse cortex. Cell Rep. 24, 2075–2087. doi: 10.1016/j.celrep.2018.07.070
Sans, N., Vissel, B., Petralia, R. S., Wang, Y. X., Chang, K., Royle, G. A., et al. (2003). Aberrant formation of glutamate receptor complexes in hippocampal neurons of mice lacking the GluR2 AMPA receptor subunit. J. Neurosci. 23, 9367–9373. doi: 10.1523/JNEUROSCI.23-28-09367.2003
Scanziani, M., Gähwiler, B. H., and Charpak, S. (1998). Target cell-specific modulation of transmitter release at terminals from a single axon. Proc. Natl. Acad. Sci. U.S.A. 95, 12004–12009. doi: 10.1073/pnas.95.20.12004
Schiller, J., Major, G., Koester, H. J., and Schiller, Y. (2000). NMDA spikes in basal dendrites of cortical pyramidal neurons. Nature 404, 285–289. doi: 10.1038/35005094
Schwenk, J., Harmel, N., Brechet, A., Zolles, G., Berkefeld, H., Muller, C. S., et al. (2012). High-resolution proteomics unravel architecture and molecular diversity of native AMPA receptor complexes. Neuron 74, 621–633. doi: 10.1016/j.neuron.2012.03.034
Schwenk, J., Harmel, N., Zolles, G., Bildl, W., Kulik, A., Heimrich, B., et al. (2009). Functional proteomics identify cornichon proteins as auxiliary subunits of AMPA receptors. Science 323, 1313–1319. doi: 10.1126/science.1167852
Shanks, N. F., Savas, J. N., Maruo, T., Cais, O., Hirao, A., Oe, S., et al. (2012). Differences in AMPA and kainate receptor interactomes facilitate identification of AMPA receptor auxiliary subunit GSG1L. Cell Rep. 1, 590–598. doi: 10.1016/j.celrep.2012.05.004
Shin, J., Shen, F., and Huguenard, J. R. (2005). Polyamines modulate AMPA receptor-dependent synaptic responses in immature layer v pyramidal neurons. J. Neurophysiol. 93, 2634–2643. doi: 10.1152/jn.01054.2004
Silberberg, G., and Markram, H. (2007). Disynaptic inhibition between neocortical pyramidal cells mediated by Martinotti cells. Neuron 53, 735–746. doi: 10.1016/j.neuron.2007.02.012
Sjöström, P. J., and Nelson, S. B. (2002). Spike timing, calcium signals and synaptic plasticity. Curr. Opin. Neurobiol. 12, 305–314. doi: 10.1016/S0959-4388(02)00325-2
Sjöström, P. J., Rancz, E. A., Roth, A., and Häusser, M. (2008). Dendritic excitability and synaptic plasticity. Physiol. Rev. 88, 769–840. doi: 10.1152/physrev.00016.2007
Sobolevsky, A. I. (2015). Structure and gating of tetrameric glutamate receptors. J. Physiol. 593, 29–38. doi: 10.1113/jphysiol.2013.264911
Soler-Llavina, G. J., and Sabatini, B. L. (2006). Synapse-specific plasticity and compartmentalized signaling in cerebellar stellate cells. Nat. Neurosci. 9,798–806. doi: 10.1038/nn1698
Sommer, B., Kohler, M., Sprengel, R., and Seeburg, P. H. (1991). RNA editing in brain controls a determinant of ion flow in glutamate-gated channels. Cell 67, 11–19. doi: 10.1016/0092-8674(91)90568-J
Soto, D., Coombs, I. D., Kelly, L., Farrant, M., and Cull-Candy, S. G. (2007). Stargazin attenuates intracellular polyamine block of calcium-permeable AMPA receptors. Nat. Neurosci. 10, 1260–1267. doi: 10.1038/nn1966
Swanson, G. T., Kamboj, S. K., and Cull-Candy, S. G. (1997). Single-channel properties of recombinant AMPA receptors depend on RNA editing, splice variation, and subunit composition. J. Neurosci. 17, 58–69. doi: 10.1523/JNEUROSCI.17-01-00058.1997
Sylwestrak, E. L., and Ghosh, A. (2012). Elfn1 regulates target-specific release probability at CA1-interneuron synapses. Science 338, 536–540. doi: 10.1126/science.1222482
Szabo, A., Somogyi, J., Cauli, B., Lambolez, B., Somogyi, P., and Lamsa, K. P. (2012). Calcium-permeable AMPA receptors provide a common mechanism for LTP in glutamatergic synapses of distinct hippocampal interneuron types. J. Neurosci. 32, 6511–6516. doi: 10.1523/JNEUROSCI.0206-12.2012
Tao, Y., Chen, Y. J., Shen, C., Luo, Z., Bates, C. R., Lee, D., et al. (2013). Erbin interacts with TARP gamma-2 for surface expression of AMPA receptors in cortical interneurons. Nat. Neurosci. 16, 290–299. doi: 10.1038/nn.3320
Tasic, B., Menon, V., Nguyen, T. N., Kim, T. K., Jarsky, T., Yao, Z., et al. (2016). Adult mouse cortical cell taxonomy revealed by single cell transcriptomics. Nat. Neurosci. 19, 335–346. doi: 10.1038/nn.4216
Thomson, A. M. (1997). Activity-dependent properties of synaptic transmission at two classes of connections made by rat neocortical pyramidal axons in vitro. J. Physiol. 502(Pt 1), 131–147.
Toledo-Rodriguez, M., Goodman, P., Illic, M., Wu, C., and Markram, H. (2005). Neuropeptide and calcium-binding protein gene expression profiles predict neuronal anatomical type in the juvenile rat. J. Physiol. 567, 401–413. doi: 10.1113/jphysiol.2005.089250
Toth, K., and McBain, C. J. (1998). Afferent-specific innervation of two distinct AMPA receptor subtypes on single hippocampal interneurons. Nat. Neurosci. 1, 572–578. doi: 10.1038/2807
Toth, K., Suares, G., Lawrence, J. J., Philips-Tansey, E., and McBain, C. J. (2000). Differential mechanisms of transmission at three types of mossy fiber synapse. J. Neurosci. 20, 8279–8289. doi: 10.1523/JNEUROSCI.20-22-08279.2000
Traynelis, S. F., Wollmuth, L. P., McBain, C. J., Menniti, F. S., Vance, K. M., Ogden, K. K., et al. (2010). Glutamate receptor ion channels: structure, regulation, and function. Pharmacol. Rev. 62, 405–496. doi: 10.1124/pr.109.002451
von Engelhardt, J., Mack, V., Sprengel, R., Kavenstock, N., Li, K. W., Stern-Bach, Y., et al. (2010). CKAMP44: a brain-specific protein attenuating short-term synaptic plasticity in the dentate gyrus. Science 327, 1518–1522. doi: 10.1126/science.1184178
Wang, H. X., and Gao, W. J. (2010). Development of calcium-permeable AMPA receptors and their correlation with NMDA receptors in fast-spiking interneurons of rat prefrontal cortex. J. Physiol. 588, 2823–2838. doi: 10.1113/jphysiol.2010.187591
Wenthold, R. J., Petralia, R. S., Blahos, J. I. I., and Niedzielski, A. S. (1996). Evidence for multiple AMPA receptor complexes in hippocampal CA1/CA2 neurons. J. Neurosci. 16, 1982–1989. doi: 10.1523/JNEUROSCI.16-06-01982.1996
Wiltgen, B. J., Royle, G. A., Gray, E. E., Abdipranoto, A., Thangthaeng, N., Jacobs, N., et al. (2010). A role for calcium-permeable AMPA receptors in synaptic plasticity and learning. PLoS One 5:e12818. doi: 10.1371/journal.pone.0012818
Wright, A., and Vissel, B. (2012). The essential role of AMPA receptor GluR2 subunit RNA editing in the normal and diseased brain. Front. Mol. Neurosci. 5:34. doi: 10.3389/fnmol.2012.00034
Keywords: AMPAR, NMDAR, neocortex, hippocampus, parvalbumin, somatostatin, interneuron, synapse-type-specific plasticity
Citation: Lalanne T, Oyrer J, Farrant M and Sjöström PJ (2018) Synapse Type-Dependent Expression of Calcium-Permeable AMPA Receptors. Front. Synaptic Neurosci. 10:34. doi: 10.3389/fnsyn.2018.00034
Received: 07 June 2018; Accepted: 24 September 2018;
Published: 12 October 2018.
Edited by:
Karri P. Lamsa, University of Szeged, HungaryReviewed by:
Zhengping Jia, Hospital for Sick Children, CanadaEric Hanse, University of Gothenburg, Sweden
Jean Christophe Poncer, Institut National de la Santé et de la Recherche Médicale (INSERM), France
Copyright © 2018 Lalanne, Oyrer, Farrant and Sjöström. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
*Correspondence: P. Jesper Sjöström, amVzcGVyLnNqb3N0cm9tQG1jZ2lsbC5jYQ==
†These authors have contributed equally to this work