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Extension of life-span by loss of CHICO, a Drosophila insulin receptor substrate protein.


Clancy, D J; Gems, D; Harshman, L G; Oldham, S; Stocker, H; Hafen, E; Leevers, S J; Partridge, L (2001). Extension of life-span by loss of CHICO, a Drosophila insulin receptor substrate protein. Science, 292(5514):104-106.

Abstract

The Drosophila melanogaster gene chico encodes an insulin receptor substrate that functions in an insulin/insulin-like growth factor (IGF) signaling pathway. In the nematode Caenorhabditis elegans, insulin/IGF signaling regulates adult longevity. We found that mutation of chico extends fruit fly median life-span by up to 48% in homozygotes and 36% in heterozygotes. Extension of life-span was not a result of impaired oogenesis in chico females, nor was it consistently correlated with increased stress resistance. The dwarf phenotype of chico homozygotes was also unnecessary for extension of life-span. The role of insulin/IGF signaling in regulating animal aging is therefore evolutionarily conserved.

The Drosophila melanogaster gene chico encodes an insulin receptor substrate that functions in an insulin/insulin-like growth factor (IGF) signaling pathway. In the nematode Caenorhabditis elegans, insulin/IGF signaling regulates adult longevity. We found that mutation of chico extends fruit fly median life-span by up to 48% in homozygotes and 36% in heterozygotes. Extension of life-span was not a result of impaired oogenesis in chico females, nor was it consistently correlated with increased stress resistance. The dwarf phenotype of chico homozygotes was also unnecessary for extension of life-span. The role of insulin/IGF signaling in regulating animal aging is therefore evolutionarily conserved.

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Additional indexing

Item Type:Journal Article, refereed
Communities & Collections:07 Faculty of Science > Institute of Zoology (former)
Dewey Decimal Classification:570 Life sciences; biology
590 Animals (Zoology)
Language:English
Date:6 April 2001
Deposited On:11 Feb 2008 12:16
Last Modified:05 Apr 2016 12:14
Publisher:American Association for the Advancement of Science (AAAS)
ISSN:0036-8075
Publisher DOI:10.1126/science.1057991
PubMed ID:11292874

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