The final, formatted version of the article will be published soon.
BRIEF RESEARCH REPORT article
Front. Neurosci.
Sec. Neurodegeneration
Volume 18 - 2024 |
doi: 10.3389/fnins.2024.1530809
RIPK1 Expression and Inhibition in Tauopathies: Implications for Neuroinflammation and Neuroprotection
Provisionally accepted- 1 Instituto de Investigaciones Biomédicas "Sols-Morreale", Madrid, Spain
- 2 Margarita Salas Center for Biological Research, Spanish National Research Council (CSIC), Madrid, Catalonia, Spain
- 3 Autonomous University of Madrid, Madrid, Spain
Tauopathies are a group of neurodegenerative diseases characterized by the alteration/aggregation of TAU protein. One of the main challenges of these diseases is that they have neither biomarkers nor pharmacological targets to stop the neurodegenerative process. Apart from the neurodegenerative process, tauopathies are also characterized by a chronic low-grade neuroinflammation process, where the receptor-interacting protein kinase 1 (RIPK1) protein plays an essential role. Our research aimed to explore the role of RIPK1 in various tauopathies. We examined mouse models of frontotemporal dementia (FTD), as well as brain tissue samples from patients with progressive supranuclear palsy (PSP), a primary form of 4R tauopathy, and Alzheimer's disease (AD), which is considered a secondary tauopathy. Our findings show elevated levels of RIPK1 mRNA levels across various forms of tauopathies, in both mouse models and human tissue samples associated with primary and secondary TAU-related disorders. Furthermore, we investigated the potential of using a RIPK1 inhibitor, known as GSK2982772, in a mouse model as a novel treatment strategy for FTD. The data showed that GSK2982772 treatment effectively reduced the reactive astrocyte response triggered by TAU P301L overexpression. However, this RIPK1 inhibitor failed to protect against the neurodegeneration caused by elevated TAU P301L levels in the hippocampal region. These results suggest that although inhibiting RIPK1 activity may help reduce TAU-related astrogliosis in the brain, the complexity of the inflammatory pathways involved could explain the absence of neuroprotective effects against TAUinduced neurodegeneration.
Keywords: Neuroinflammation, tau, ripk1, neurodegeneration, Alzheimer's disease (AD), Progressive supranuclear palsy (PSP), Frontotemporal dementia (FTD)
Received: 19 Nov 2024; Accepted: 11 Dec 2024.
Copyright: © 2024 Silva-Llanes, Madruga, Martinez and Lastres-Becker. 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) or licensor 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:
Isabel Lastres-Becker, Autonomous University of Madrid, Madrid, Spain
Disclaimer: All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers. Any product that may be evaluated in this article or claim that may be made by its manufacturer is not guaranteed or endorsed by the publisher.