Identification of plb1 mutation that extends longevity via activating Sty1 MAPK in Schizosaccharomyces pombe.

To understand the lifespan of higher organisms, including humans, it is important to understand lifespan at the cellular level as a prerequisite. So, fission yeast is a good model organism for the study of lifespan. To identify the novel factors involved in longevity, we are conducting a large-scale screening of long-lived mutant strains that extend chronological lifespan (cell survival in the stationary phase) using fission yeast. One of the newly acquired long-lived mutant strains (No.98 mutant) was selected for analysis and found that the long-lived phenotype was due to a missense mutation (92Phe → Ile) in the plb1+ gene. plb1+ gene in fission yeast is a nonessential gene encoding a homolog of phospholipase B, but its functions under normal growth conditions, as well as phospholipase B activity, remain unresolved. Our analysis of the No.98 mutant revealed that the plb1 mutation reduces the integrity of the cellular membrane and cell wall and activates Sty1 via phosphorylation. © 2024. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.

Citation

Yasukichi Maekawa, Kotaro Matsui, Keisuke Okamoto, Takafumi Shimasaki, Hokuto Ohtsuka, Motohiro Tani, Kunio Ihara, Hirofumi Aiba. Identification of plb1 mutation that extends longevity via activating Sty1 MAPK in Schizosaccharomyces pombe. Molecular genetics and genomics : MGG. 2024 Feb 29;299(1):20

Mesh Tags

Substances

PMID: 38424265

search → result