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Angiotensin II induces coordinated calcium bursts in aldosterone-producing adrenal rosettes
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Angiotensin II induces coordinated calcium bursts in aldosterone-producing adrenal rosettes
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Journal Article
Angiotensin II induces coordinated calcium bursts in aldosterone-producing adrenal rosettes
2020
Overview
Aldosterone-producing zona glomerulosa (zG) cells of the adrenal gland arrange in distinct multi-cellular rosettes that provide a structural framework for adrenal cortex morphogenesis and plasticity. Whether this cyto-architecture also plays functional roles in signaling remains unexplored. To determine if structure informs function, we generated mice with zG-specific expression of GCaMP3 and imaged zG cells within their native rosette structure. Here we demonstrate that within the rosette, angiotensin II evokes periodic Ca
v
3-dependent calcium events that form bursts that are stereotypic in form. Our data reveal a critical role for angiotensin II in regulating burst occurrence, and a multifunctional role for the rosette structure in activity-prolongation and coordination. Combined our data define the calcium burst as the fundamental unit of zG layer activity evoked by angiotensin II and highlight a novel role for the rosette as a facilitator of cell communication.
Aldosterone-producing zona glomerulosa cells in the adrenal gland arrange into rosette structures known to be important for morphogenesis. Here the authors show that the cells in the rosettes produce coordinated calcium activity bursts in response to angiotensin II that correlate with aldosterone production level.
Publisher
Nature Publishing Group UK,Nature Publishing Group,Nature Portfolio
Subject
