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Updated: Nov 2, 2025

A Method for High Fidelity Optogenetic Control of Individual Pyramidal Neurons In vivo
Published on: September 2, 2013
Optogenetic control of calcium influx in mammalian cells
Yi-Tsang Lee1, Rui Chen1, Yubin Zhou1
1Center for Translational Cancer Research, Institute of Biosciences and Technology, Texas A&M University, Houston, TX, United States.
Abstract:
Optogenetics combines optics and genetics to enable non-invasive interrogation of cell physiology at an unprecedented high spatiotemporal resolution. Here, we introduce Opto-CRAC as a set of genetically-encoded calcium actuators (GECAs) engineered from the calcium release-activated calcium (CRAC) channel, which has been tailored for optical control of calcium entry and calcium-dependent physiological responses in non-excitable cells and tissues. We describe a detailed protocol for applying Opto-CRAC as an optogenetic tool to achieve photo-tunable control over intracellular calcium signals and calcium-dependent gene expression in mammalian cells.

