Global Feather Orientations Changed by Electric Current
Overview
Authors
Affiliations
During chicken skin development, each feather bud exhibits its own polarity, but a population of buds organizes with a collective global orientation. We used embryonic dorsal skin, with buds aligned parallel to the rostral-caudal body axis, to explore whether exogenous electric fields affect feather polarity. Interestingly, brief exogenous current exposure prior to visible bud formation later altered bud orientations. Applying electric pulses perpendicular to the body rostral-caudal axis realigned bud growth in a collective swirl, resembling an electric field pointing toward the anode. Perturbed buds show normal molecular expression and morphogenesis except for their altered orientation. Epithelial-mesenchymal recombination demonstrates the effects of exogenous electric fields are mediated through the epithelium. Small-molecule channel inhibitor screens show Ca channels and PI3 Kinase are involved in controlling feather bud polarity. This work reveals the importance of bioelectricity in organ development and regeneration and provides an explant culture platform for experimentation.
Bioelectricity is a universal multifaced signaling cue in living organisms.
Zhang G, Levin M Mol Biol Cell. 2025; 36(2):pe2.
PMID: 39873662 PMC: 11809311. DOI: 10.1091/mbc.E23-08-0312.
Bioelectricity: From Endogenous Mechanisms to Opportunities in Synthetic Bioengineering.
Levin M, Djamgoz M Bioelectricity. 2024; 4(1):1-2.
PMID: 39355567 PMC: 11441358. DOI: 10.1089/bioe.2022.0003.
Stability and robustness properties of bioelectric networks: A computational approach.
Grodstein J, Levin M Biophys Rev (Melville). 2024; 2(3):031305.
PMID: 38505634 PMC: 10903393. DOI: 10.1063/5.0062442.
Bioelectric Signaling: Role of Bioelectricity in Directional Cell Migration in Wound Healing.
Zhao M, Rolandi M, Isseroff R Cold Spring Harb Perspect Biol. 2022; 14(10).
PMID: 36041786 PMC: 9524286. DOI: 10.1101/cshperspect.a041236.