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Utsumi H, Yabe T, Koshida S, Yamashita A, Takada S. Deficiency of mastl, a mitotic regulator, results in cell detachment from developing tissues of zebrafish embryos. Front Cell Dev Biol 2024; 12:1375655. [PMID: 38533088 PMCID: PMC10964716 DOI: 10.3389/fcell.2024.1375655] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2024] [Accepted: 02/22/2024] [Indexed: 03/28/2024] Open
Abstract
To form tissues with unique functions and structures, it is important that the cells that comprise them maintain physical contact. On the other hand, with each mitosis, drastic changes in cell shapes, cell adhesion, and cytoskeletal architecture may cause such contacts to be temporarily weakened, risking improper development and maintenance of tissues. Despite such risks, tissues form properly during normal development. However, it is not well understood whether mitotic abnormalities affect tissue formation. Here, analysis of zebrafish embryos with aberrant mitosis shows that proper progression of mitosis is important to maintain cell contact in developing tissues. By screening mutants with abnormal trunk and tail development, we obtained a mutant with perturbed expression of some tissue-specific genes in embryonic caudal regions. The responsible gene is mastl/gwl, which is involved in progression of mitosis. Analysis focusing on the chordo-neural hinge (CNH), the primordium of axial tissues, shows that cell detachment from the CNH is increased in mastl mutant embryos. Time-lapse imaging reveals that this cell detachment occurs during mitosis. These results suggest that cells are unable to maintain contact due to abnormalities in progression of mitosis in mastl mutants.
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Affiliation(s)
- Hideko Utsumi
- National Institute for Basic Biology, National Institutes of Natural Sciences, Okazaki, Aichi, Japan
- Exploratory Research Center on Life and Living Systems (ExCELLS), National Institutes of Natural Sciences, Okazaki, Aichi, Japan
| | - Taijiro Yabe
- National Institute for Basic Biology, National Institutes of Natural Sciences, Okazaki, Aichi, Japan
- Exploratory Research Center on Life and Living Systems (ExCELLS), National Institutes of Natural Sciences, Okazaki, Aichi, Japan
- The Graduate University for Advanced Studies (SOKENDAI), Okazaki, Aichi, Japan
| | - Sumito Koshida
- National Institute for Basic Biology, National Institutes of Natural Sciences, Okazaki, Aichi, Japan
- The Graduate University for Advanced Studies (SOKENDAI), Okazaki, Aichi, Japan
- Shumei University, Yachiyo, Chiba, Japan
| | - Akira Yamashita
- National Institute for Basic Biology, National Institutes of Natural Sciences, Okazaki, Aichi, Japan
- The Graduate University for Advanced Studies (SOKENDAI), Okazaki, Aichi, Japan
- Graduate School of Arts and Science, The university of Tokyo, Tokyo, Japan
| | - Shinji Takada
- National Institute for Basic Biology, National Institutes of Natural Sciences, Okazaki, Aichi, Japan
- Exploratory Research Center on Life and Living Systems (ExCELLS), National Institutes of Natural Sciences, Okazaki, Aichi, Japan
- The Graduate University for Advanced Studies (SOKENDAI), Okazaki, Aichi, Japan
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