NUCB1 is required for proper insulin signaling to control longevity in Drosophila

Author:

Yoon Jong‐Won12,Baek Si‐Eun12,Yang Jae‐Yoon12,Yeom Eunbyul12ORCID

Affiliation:

1. School of Life Science and Biotechnology, College of Natural Sciences Kyungpook National University Daegu Korea

2. School of Life Sciences, BK21 FOUR KNU Creative BioResearch Group Kyungpook National University Daegu Korea

Abstract

AimWe examined the novel role of NUCB1(Nucleobindin‐1) associated with longevity in Drosophila melanogaster.MethodsWe measured the lifespan, metabolic phenotypes, and mRNA levels of Drosophila insulin‐like peptides (Dilps), the protein level of phosphorylated AKT, and the localization of FOXO and its target gene expressions in the NUCB1 knockdown condition.ResultsNUCB1 knockdown flies show an extended lifespan and metabolic phenotypes such as increased circulating glucose level and starvation resistance. The mRNA expression levels of Dilps and the protein level of phosphorylated AKT, a downstream component of insulin signaling, were decreased in NUCB1 knockdown flies compared with the control flies. Also, the nuclear localization of FOXO and its target gene expressions, such as d4E‐BP and InR, were elevated.ConclusionsThe results show that NUCB1 knockdown flies exhibits an extended lifespan. These findings suggest that NUCB1 modulates longevity through insulin signaling in Drosophila. Geriatr Gerontol Int 2024; 24: 486–492.

Publisher

Wiley

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