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TitleA genetically encoded near-infrared fluorescent calcium ion indicator.
Publication TypeJournal Article
Year of Publication2019
AuthorsQian, Yong, Kiryl D. Piatkevich, Benedict Mc Larney, Ahmed S. Abdelfattah, Sohum Mehta, Mitchell H. Murdock, Sven Gottschalk, Rosana S. Molina, Wei Zhang, Yingche Chen, Jiahui Wu, Mikhail Drobizhev, Thomas E. Hughes, Jin Zhang, Eric R. Schreiter, Shy Shoham, Daniel Razansky, Edward S. Boyden, and Robert E. Campbell
JournalNat Methods
Date Published2019 Feb

We report an intensiometric, near-infrared fluorescent, genetically encoded calcium ion (Ca) indicator (GECI) with excitation and emission maxima at 678 and 704 nm, respectively. This GECI, designated NIR-GECO1, enables imaging of Ca transients in cultured mammalian cells and brain tissue with sensitivity comparable to that of currently available visible-wavelength GECIs. We demonstrate that NIR-GECO1 opens up new vistas for multicolor Ca imaging in combination with other optogenetic indicators and actuators.

Alternate JournalNat. Methods
PubMed ID30664778