Regulation of endogenous transmembrane receptors through optogenetic Cry2 clustering.

Regulation of endogenous transmembrane receptors through optogenetic Cry2 clustering.
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DOI:
10.1038/ncomms7898
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发表时间:
2015-04-22
影响因子:
16.6
通讯作者:
Schaffer DV
Schaffer DV
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Bugaj LJ;Spelke DP;Mesuda CK;Varedi M;Kane RS;Schaffer DV

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Transmembrane receptors are the predominant conduit through which cells sense and transduce extracellular information into intracellular biochemical signals. Current methods to control and study receptor function, however, suffer from poor resolution in space and time and often employ receptor overexpression, which can introduce experimental artifacts. We report a genetically-encoded approach, termed Clustering Indirectly using Cryptochrome 2 (CLICR), for spatiotemporal control over endogenous transmembrane receptor activation, enabled through the optical regulation of target receptor clustering and downstream signaling using non-covalent interactions with engineered Arabidopsis Cryptochrome 2 (Cry2). CLICR offers a modular platform to enable photocontrol of the clustering of diverse transmembrane receptors including FGFR, PDGFR, and integrins in multiple cell types including neural stem cells. Furthermore, light-inducible manipulation of endogenous receptor tyrosine kinase (RTK) activity can modulate cell polarity and establish phototaxis in fibroblasts. The resulting spatiotemporal control over cellular signaling represents a powerful new optogenetic framework for investigating and controlling cell function and fate.
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