RME-1 is required for lifespan extension and increased resistance to stresses associated with decreased insulin/IGF-1-like signaling in Caenorhabditis elegans


  • Chul-Kyu Kim Soonchunhyang University
  • Sang-Kyu Park Soonchunhyang University


C. elegans, insulin/IGF-1-like signaling pathway, lifespan, RME-1, stress response


The insulin/insulin-like growth factor (IGF)-1 signaling (IIS) pathway is a conserved lifespan-modulating genetic pathway. Many genes involved in lifespan extension associated with decreased signaling of the IIS pathway have been identified. In the present study, we found a novel gene required for the effect of the IIS pathway on the stress response and aging in C. elegans. Receptor mediated endocytosis (RME)-1 is expressed ubiquitously and known to be involved in cellular endocytic transport. Knockdown of rme-1 abolished the lifespan-extending effect caused by decreased IIS. In addition, resistance to oxidative stress, heat shock and ultraviolet irradiation were significantly decreased when the expression of rme-1 was blocked. The delayed age-related decline in motility observed in age-1 mutants with defects in the IIS pathway was also modulated by RME-1. The expression of sod-3, which is positively correlated with the remaining lifespan of an individual, was decreased by rme-1 knockdown. Our study demonstrates that RME-1 is required for the anti-aging effect associated with decreased IIS. We suggest that endocytic transport could be one underlying mechanisms for longevity via the IIS pathway.


Received: May 10, 2016; Revised: June 10, 2016; Accepted: June 10, 2016; Published online: October 31, 2016

How to cite: Kim CK, Park SK. RME-1 is required for lifespan extension and increased resistance to stresses associated with decreased insulin/IGF-1-like signaling in Caenorhabditis elegans. Arch Biol Sci. 2017;69(3):417-25.


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Author Biographies

Chul-Kyu Kim, Soonchunhyang University

Department of Medical Biotechnology

Sang-Kyu Park, Soonchunhyang University

Department of Medical Biotechnology


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How to Cite

Kim C-K, Park S-K. RME-1 is required for lifespan extension and increased resistance to stresses associated with decreased insulin/IGF-1-like signaling in Caenorhabditis elegans. Arch Biol Sci [Internet]. 2017Aug.11 [cited 2022Aug.9];69(3):417-25. Available from: https://www.serbiosoc.org.rs/arch/index.php/abs/article/view/552




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