A genetically encoded near-infrared fluorescent calcium ion indicator
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© 2019, The Author(s), under exclusive licence to Springer Nature America, Inc. We report an intensiometric, near-infrared fluorescent, genetically encoded calcium ion (Ca2+) indicator (GECI) with excitation and emission maxima at 678 and 704 nm, respectively. This GECI, designated NIR-GECO1, enables imaging of Ca2+ 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 Ca2+ imaging in combination with other optogenetic indicators and actuators.
Date issued
2019-01Department
Massachusetts Institute of Technology. Media Laboratory; McGovern Institute for Brain Research at MITJournal
Nature Methods
Publisher
Springer Science and Business Media LLC
Citation
Qian, Yong, Piatkevich, Kiryl D, Mc Larney, Benedict, Abdelfattah, Ahmed S, Mehta, Sohum et al. 2019. "A genetically encoded near-infrared fluorescent calcium ion indicator." Nature Methods, 16 (2).
Version: Author's final manuscript
ISSN
1548-7091
1548-7105