Global feather orientations changed by electric current

Ting-Xin Jiang; Ang Li; Chih-Min Lin; Cathleen Chiu; Jung-Hwa Cho; Brian Reid; Min Zhao; Robert H. Chow; Randall Bruce Widelitz; Cheng-Ming Chuong

iScience (Jun 2021)

Global feather orientations changed by electric current

Ting-Xin Jiang,
Ang Li,
Chih-Min Lin,
Cathleen Chiu,
Jung-Hwa Cho,
Brian Reid,
Min Zhao,
Robert H. Chow,
Randall Bruce Widelitz,
Cheng-Ming Chuong

Affiliations

Ting-Xin Jiang: Department of Pathology, Keck School of Medicine, University of Southern California, 2011 Zonal Avenue, Los Ángeles, CA 90033, USA
Ang Li: Department of Pathology, Keck School of Medicine, University of Southern California, 2011 Zonal Avenue, Los Ángeles, CA 90033, USA
Chih-Min Lin: Department of Pathology, Keck School of Medicine, University of Southern California, 2011 Zonal Avenue, Los Ángeles, CA 90033, USA
Cathleen Chiu: Department of Pathology, Keck School of Medicine, University of Southern California, 2011 Zonal Avenue, Los Ángeles, CA 90033, USA
Jung-Hwa Cho: Department of Physiology and Biophysics, Keck School of Medicine, University of Southern California, Los Angeles, CA 90033, USA
Brian Reid: Department of Ophthalmology & Vision Science, and Department of Dermatology, University of California, Davis, Sacramento, CA 95816, USA
Min Zhao: Department of Ophthalmology & Vision Science, and Department of Dermatology, University of California, Davis, Sacramento, CA 95816, USA
Robert H. Chow: Department of Physiology and Biophysics, Keck School of Medicine, University of Southern California, Los Angeles, CA 90033, USA
Randall Bruce Widelitz: Department of Pathology, Keck School of Medicine, University of Southern California, 2011 Zonal Avenue, Los Ángeles, CA 90033, USA; Corresponding author
Cheng-Ming Chuong: Department of Pathology, Keck School of Medicine, University of Southern California, 2011 Zonal Avenue, Los Ángeles, CA 90033, USA; Corresponding author

Journal volume & issue: Vol. 24, no. 6
p. 102671

Abstract

Read online

Summary: 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 Ca2+ 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.

Published in iScience

ISSN: 2589-0042 (Online)
Publisher: Elsevier
Country of publisher: United States
LCC subjects: Science
Website: http://www.cell.com/iscience/home

About the journal

Abstract

Keywords