Abstract

The endocytic compartments keep their interior acidic through the inward flow of protons and anions from the cytosol. Acidification is mediated by a proton pump known as vacuolar-type ATPase (V-ATPase) and transporters conferring anion conductance to the organellar membrane. In this study, we analysed the phenotype of mouse embryos lacking the V-ATPase c-subunit. The mutant embryos differentiated embryonic epithelial tissues, primitive endoderm, epiblast, and extraembryonic ectoderm; however, the organisation of these epithelia was severely affected. The apical-basal polarity in the visceral endoderm layer was not properly established in the mutant embryos, resulting in abnormal epithelial morphology. Thus, the function of V-ATPase is imperative for the establishment and/or maintenance of epithelial cell polarity, which is required for early embryogenesis.

Details

Title
Vacuolar-type proton ATPase is required for maintenance of apicobasal polarity of embryonic visceral endoderm
Author
Sun-Wada Ge-Hong 1 ; Tabata Hiroyuki 2 ; Wada Yoh 3 

 Doshisha Women’s College of Liberal Arts, Department of Biochemistry, Faculty of Pharmaceutical Sciences, Kohdo, Kyotanabe, Japan (GRID:grid.444204.2) (ISNI:0000 0001 0193 2713) 
 Doshisha Women’s College of Liberal Arts, Department of Biochemistry, Faculty of Pharmaceutical Sciences, Kohdo, Kyotanabe, Japan (GRID:grid.444204.2) (ISNI:0000 0001 0193 2713); Himeji Dokkyo University, Division of Biochemistry, Faculty of Pharmaceutical Sciences, Himeji, Japan (GRID:grid.412142.0) (ISNI:0000 0000 8894 6108) 
 Institute of Scientific and Industrial Research, Osaka University, Division of Biological Sciences, Ibaraki, Japan (GRID:grid.136593.b) (ISNI:0000 0004 0373 3971) 
Publication year
2021
Publication date
2021
Publisher
Nature Publishing Group
e-ISSN
20452322
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2577606446
Copyright
© The Author(s) 2021. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.