AUTHOR=Mayr Vanessa , Sturtzel Caterina , Stadler Manuela , Grissenberger Sarah , Distel Martin 

TITLE=Fast Dynamic in vivo Monitoring of Erk Activity at Single Cell Resolution in DREKA Zebrafish

JOURNAL=Frontiers in Cell and Developmental Biology

VOLUME=6

YEAR=2018

URL=https://www.frontiersin.org/journals/cell-and-developmental-biology/articles/10.3389/fcell.2018.00111

DOI=10.3389/fcell.2018.00111

ISSN=2296-634X

ABSTRACT=<p>Precise regulation of signaling pathways in single cells underlies tissue development, maintenance and repair in multicellular organisms, but our ability to monitor signaling dynamics in living vertebrates is currently limited. We implemented kinase translocation reporter (KTR) technology to create DREKA (“<bold>d</bold>ynamic <bold>r</bold>eporter of <bold>E</bold>r<bold>k a</bold>ctivity”) zebrafish, which allow one to observe Erk activity <italic>in vivo</italic> at single cell level with high temporal resolution. DREKA zebrafish faithfully reported Erk activity after muscle cell wounding and revealed the kinetics of small compound uptake. Our results promise that kinase translocation reporters can be adapted for further applications in developmental biology, disease modeling, and <italic>in vivo</italic> pharmacology in zebrafish.</p>