PMID- 23264008 OWN - NLM STAT- MEDLINE DCOM- 20131211 LR - 20130513 IS - 1089-4098 (Electronic) IS - 1073-8584 (Linking) VI - 19 IP - 3 DP - 2013 Jun TI - Genetically encoded calcium indicators and astrocyte calcium microdomains. PG - 274-91 LID - 10.1177/1073858412468794 [doi] AB - The discovery of intracellular Ca(2+) signals within astrocytes has changed our view of how these ubiquitous cells contribute to brain function. Classically thought merely to serve supportive functions, astrocytes are increasingly thought to respond to, and regulate, neurons. The use of organic Ca(2+) indicator dyes such as Fluo-4 and Fura-2 has proved instrumental in the study of astrocyte physiology. However, progress has recently been accelerated by the use of cytosolic and membrane targeted genetically encoded calcium indicators (GECIs). Herein, we review these recent findings, discuss why studying astrocyte Ca(2+) signals is important to understand brain function, and summarize work that led to the discovery of TRPA1 channel-mediated near-membrane Ca(2+) signals in astrocytes and their indirect neuromodulatory roles at inhibitory synapses in the CA1 stratum radiatum region of the hippocampus. We suggest that the use of membrane-targeted and cytosolic GECIs holds great promise to explore the diversity of Ca(2+) signals within single astrocytes and also to study diversity of function for astrocytes in different parts of the brain. FAU - Tong, Xiaoping AU - Tong X AD - Department of Physiology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA 90095, USA. FAU - Shigetomi, Eiji AU - Shigetomi E FAU - Looger, Loren L AU - Looger LL FAU - Khakh, Baljit S AU - Khakh BS LA - eng GR - NS060677/NS/NINDS NIH HHS/United States GR - NS071292/NS/NINDS NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't DEP - 20121220 PL - United States TA - Neuroscientist JT - The Neuroscientist : a review journal bringing neurobiology, neurology and psychiatry JID - 9504819 RN - 0 (Transient Receptor Potential Channels) RN - SY7Q814VUP (Calcium) SB - IM MH - Animals MH - Astrocytes/*cytology MH - Calcium/*metabolism MH - Calcium Signaling/physiology MH - Membrane Microdomains/*metabolism MH - Transient Receptor Potential Channels/*genetics/metabolism OTO - NOTNLM OT - GAT-3 OT - GCaMP3 OT - GCaMP5G OT - GECI OT - TRPA1 OT - astrocyte OT - branch OT - branchlet OT - calcium OT - endfoot OT - leaflet OT - process EDAT- 2012/12/25 06:00 MHDA- 2013/12/16 06:00 CRDT- 2012/12/25 06:00 PHST- 2012/12/25 06:00 [entrez] PHST- 2012/12/25 06:00 [pubmed] PHST- 2013/12/16 06:00 [medline] AID - 1073858412468794 [pii] AID - 10.1177/1073858412468794 [doi] PST - ppublish SO - Neuroscientist. 2013 Jun;19(3):274-91. doi: 10.1177/1073858412468794. Epub 2012 Dec 20.