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Calcium oscillations coordinate feather mesenchymal cell movement by SHH dependent modulation of gap junction networks.

Abstract：

:Collective cell migration mediates multiple tissue morphogenesis processes. Yet how multi-dimensional mesenchymal cell movements are coordinated remains mostly unknown. Here we report that coordinated mesenchymal cell migration during chicken feather elongation is accompanied by dynamic changes of bioelectric currents. Transcriptome profiling and functional assays implicate contributions from functional voltage-gated Ca2+ channels (VGCCs), Connexin-43 based gap junctions, and Ca2+ release activated Ca2+ (CRAC) channels. 4-Dimensional Ca2+ imaging reveals that the Sonic hedgehog-responsive mesenchymal cells display synchronized Ca2+ oscillations, which expand progressively in area during feather elongation. Inhibiting VGCCs, gap junctions, or Sonic hedgehog signaling alters the mesenchymal Ca2+ landscape, cell movement patterns and feather bud elongation. Ca2+ oscillations induced by cyclic activation of opto-cCRAC channels enhance feather bud elongation. Functional disruption experiments and promoter analysis implicate synergistic Hedgehog and WNT/β-Catenin signaling in activating Connexin-43 expression, establishing gap junction networks synchronizing the Ca2+ profile among cells, thereby coordinating cell movement patterns.

journal_name

Nat Commun

journal_title

Nature communications

authors

Li A,Cho JH,Reid B,Tseng CC,He L,Tan P,Yeh CY,Wu P,Li Y,Widelitz RB,Zhou Y,Zhao M,Chow RH,Chuong CM

doi

10.1038/s41467-018-07661-5

subject

Has Abstract

pub_date

2018-12-18 00:00:00

pages

5377

issue

1

issn

2041-1723

pii

10.1038/s41467-018-07661-5

journal_volume

9

pub_type

杂志文章

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