Abstract
Store-operated calcium entry through calcium release–activated calcium (CRAC) channels replenishes intracellular calcium stores and plays a critical role in cellular calcium signaling. CRAC channels are activated by tightly regulated interaction between the endoplasmic reticulum (ER) calcium sensor STIM proteins and plasma membrane (PM) Orai channels. Our current understanding of the role of STIM–Orai-dependent calcium signals under physiologically relevant conditions remains limited in part due to a lack of spatiotemporally precise methods for direct manipulation of endogenous CRAC channels. Here, we report the synthesis and characterization of azoboronate light-operated CRAC channel inhibitors (LOCIs) that allow for a dynamic and fully reversible remote modulation of the function of native CRAC channels using ultraviolet (UV) and visible light. We demonstrate the use of LOCI-1 to modulate gene expression in T lymphocytes, cancer cell seeding at metastatic sites, and pain-related behavior.
Original language | American English |
---|---|
Article number | e2118160119 |
Journal | Proceedings of the National Academy of Sciences of the United States of America |
Volume | 119 |
Issue number | 13 |
DOIs | |
State | Published - 29 Mar 2022 |
Bibliographical note
Funding Information:ACKNOWLEDGMENTS. This work was supported by grants from the NSF (Grant 2116412 to M.A.K.), the Israeli Science Foundation (Grant 1048/18 to R.P. and Grant 1470/17 to A.M.B.), the Sessile and Seymour Alpert Chair in Pain Research (A.M.B.), the US–Israel Binational Science Foundation (Grant 2019657 to R.P.), and the Rappaport Research Institute (2018 Thematic Grant to R.P. and Y.S.).
Publisher Copyright:
© 2022 the Author(s).
Keywords
- CRAC channel
- Orai
- STIM
- azobenzene
- photoswitch