Triple function of Synaptotagmin 7 ensures efficiency of high-frequency transmission at central GABAergic synapses

Chen, Chong; Satterfield, Rachel; Young, Samuel; Jonas, Peter M

Triple function of Synaptotagmin 7 ensures efficiency of high-frequency transmission at central GABAergic synapses

Chen C, Satterfield R, Young S, Jonas PM. 2017. Triple function of Synaptotagmin 7 ensures efficiency of high-frequency transmission at central GABAergic synapses. Cell Reports. 21(8), 2082–2089.

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IST-2017-874-v1+1_PIIS2211124717316029.pdf 2.76 MB

DOI

10.1016/j.celrep.2017.10.122

Journal Article | Published | English

Scopus indexed

Author

Chen, Chong^ISTA; Satterfield, Rachel; Young, Samuel; Jonas, Peter M^ISTA

Department

Jonas Group

Grant

Mechanisms of transmitter release at GABAergic synapses
Biophysics and circuit function of a giant cortical glumatergic synapse

Abstract

Synaptotagmin 7 (Syt7) is thought to be a Ca2+ sensor that mediates asynchronous transmitter release and facilitation at synapses. However, Syt7 is strongly expressed in fast-spiking, parvalbumin-expressing GABAergic interneurons, and the output synapses of these neurons produce only minimal asynchronous release and show depression rather than facilitation. To resolve this apparent contradiction, we examined the effects of genetic elimination of Syt7 on synaptic transmission at the GABAergic basket cell (BC)-Purkinje cell (PC) synapse in cerebellum. Our results indicate that at the BC-PC synapse, Syt7 contributes to asynchronous release, pool replenishment, and facilitation. In combination, these three effects ensure efficient transmitter release during high-frequency activity and guarantee frequency independence of inhibition. Our results identify a distinct function of Syt7: ensuring the efficiency of high-frequency inhibitory synaptic transmission

Publishing Year

2017

Date Published

2017-11-21

Journal Title

Cell Reports

Acknowledged SSUs

Pre-Clinical Facility

Volume

Issue

Page

2082 - 2089

ISSN

22111247

IST-REx-ID

749

Cite this

Chen C, Satterfield R, Young S, Jonas PM. Triple function of Synaptotagmin 7 ensures efficiency of high-frequency transmission at central GABAergic synapses. Cell Reports. 2017;21(8):2082-2089. doi:10.1016/j.celrep.2017.10.122

Chen, C., Satterfield, R., Young, S., & Jonas, P. M. (2017). Triple function of Synaptotagmin 7 ensures efficiency of high-frequency transmission at central GABAergic synapses. Cell Reports. Cell Press. https://doi.org/10.1016/j.celrep.2017.10.122

Chen, Chong, Rachel Satterfield, Samuel Young, and Peter M Jonas. “Triple Function of Synaptotagmin 7 Ensures Efficiency of High-Frequency Transmission at Central GABAergic Synapses.” Cell Reports. Cell Press, 2017. https://doi.org/10.1016/j.celrep.2017.10.122.

C. Chen, R. Satterfield, S. Young, and P. M. Jonas, “Triple function of Synaptotagmin 7 ensures efficiency of high-frequency transmission at central GABAergic synapses,” Cell Reports, vol. 21, no. 8. Cell Press, pp. 2082–2089, 2017.

Chen C, Satterfield R, Young S, Jonas PM. 2017. Triple function of Synaptotagmin 7 ensures efficiency of high-frequency transmission at central GABAergic synapses. Cell Reports. 21(8), 2082–2089.

Chen, Chong, et al. “Triple Function of Synaptotagmin 7 Ensures Efficiency of High-Frequency Transmission at Central GABAergic Synapses.” Cell Reports, vol. 21, no. 8, Cell Press, 2017, pp. 2082–89, doi:10.1016/j.celrep.2017.10.122.

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