Improved calcium imaging in transgenic mice expressing a troponin C-based biosensor

Nicola Heim, Olga Garaschuk, Michael W. Friedrich, Marco Mank, Ruxandra I. Milos, Yury Kovalchuk, Arthur Konnerth, Oliver Griesbeck

Research output: Contribution to journalArticlepeer-review

167 Scopus citations

Abstract

Fluorescent Ca2+ indicator proteins (FCIPs) are attractive tools for studying Ca2+ dynamics in live cells. Here we describe transgenic mouse lines expressing a troponin C (TnC)-based biosensor. The biosensor is widely expressed in neurons and has improved Ca2+ sensitivity both in vitro and in vivo. This allows FCIP-based two-photon Ca2+ imaging of distinct neurons and their dendrites in vivo, and opens a new avenue for structure-function analysis of intact neuronal circuits.

Original languageEnglish
Pages (from-to)127-129
Number of pages3
JournalNature Methods
Volume4
Issue number2
DOIs
StatePublished - Feb 2007

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