PUBLICATION
Functional characterisation of romeharsha and clint1 reaffirms the link between plasma membrane homeostasis, cell size maintenance and tissue homeostasis in developing zebrafish epidermis
- Authors
- Phatak, M., Sonawane, M.
- ID
- ZDB-PUB-180913-26
- Date
- 2018
- Source
- Journal of biosciences 43: 605-619 (Journal)
- Registered Authors
- Sonawane, Mahendra
- Keywords
- none
- MeSH Terms
-
- Animals
- Cell Membrane/genetics
- Cell Size
- Embryonic Development/genetics*
- Endocytosis/genetics*
- Epidermis/growth & development
- Homeostasis/genetics
- Mutant Proteins/genetics
- Myosin Type V/genetics
- Phenotype
- Zebrafish/genetics*
- Zebrafish/growth & development
- Zebrafish Proteins/genetics*
- PubMed
- 30207308 Full text @ J. Biosci.
Citation
Phatak, M., Sonawane, M. (2018) Functional characterisation of romeharsha and clint1 reaffirms the link between plasma membrane homeostasis, cell size maintenance and tissue homeostasis in developing zebrafish epidermis. Journal of biosciences. 43:605-619.
Abstract
In vertebrates, early developing epidermis is a bilayered epithelium consisting of an outer periderm and the underlying basal epidermis. It eventually develops into a multi-layered epithelium. The mechanisms that control the architecture and homeostasis of early developing bilayered epidermis have remained poorly understood. Recently, we have shown that the function of Myosin Vb, an actin based molecular motor, is essential in peridermal cells for maintenance of plasma membrane homeostasis. Furthermore, our analyses of the goosepimples/myosin Vb mutant unravelled a direct link between plasma membrane homeostasis, cell size maintenance and tissue homeostasis in the developing epidermis. However, it remained unclear whether this link is specific to myosin Vb mutant or this is a general principle. Here we have identified two more genetic conditions, romeharsha mutant and clint1 knockdown, in which membrane homeostasis is perturbed, as evident by increased endocytosis and accumulation of lysosomes. As a consequence, peridermal cells exhibit smaller size and increased proliferation. We further show that decreasing endocytosis in romeharsha mutant and clint1 morphants rescues or mitigates the effect on cell size, cell proliferation and morphological phenotype. Our data confirms generality of the principle by reaffirming the causal link between plasma membrane homeostasis, cell size maintenance and tissue homeostasis.
Genes / Markers
Expression
Phenotype
Mutations / Transgenics
Human Disease / Model
Sequence Targeting Reagents
Fish
Orthology
Engineered Foreign Genes
Mapping