Calcium oscillations coordinate feather mesenchymal cell movement by SHH dependent modulation of gap junction networks.
Ang LiJung-Hwa ChoBrian ReidChun-Chih TsengLian HePeng TanChao-Yuan YehPing WuYuwei LiRandall B WidelitzYubin ZhouMin ZhaoRobert H ChowCheng-Ming ChuongPublished in: Nature communications (2018)
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.
Keyphrases
- single cell
- cell migration
- stem cells
- bone marrow
- cell therapy
- protein kinase
- induced apoptosis
- rna seq
- gene expression
- signaling pathway
- working memory
- high resolution
- cell death
- dna methylation
- cell proliferation
- poor prognosis
- mass spectrometry
- cancer therapy
- drug delivery
- endoplasmic reticulum stress
- fluorescence imaging
- pi k akt