Mallick A, Ranawade A, van den Berg W, Gupta BP. Axin-Mediated Regulation of Lifespan and Muscle Health in
C. elegans Requires AMPK-FOXO Signaling.
iScience 2020;
23:101843. [PMID:
33319173 PMCID:
PMC7724191 DOI:
10.1016/j.isci.2020.101843]
[Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2020] [Revised: 10/14/2020] [Accepted: 11/17/2020] [Indexed: 12/17/2022] Open
Abstract
Aging is a significant risk factor for several diseases. Studies have uncovered multiple signaling pathways that modulate aging, including insulin/insulin-like growth factor-1 signaling (IIS). In Caenorhabditis elegans, the key regulator of IIS is DAF-16/FOXO. One of the kinases that affects DAF-16 function is the AMPK catalytic subunit homolog AAK-2. In this study, we report that PRY-1/Axin plays an essential role in AAK-2 and DAF-16-mediated regulation of life span. The pry-1 mutant transcriptome contains many genes associated with aging and muscle function. Consistent with this, pry-1 is strongly expressed in muscles, and muscle-specific overexpression of pry-1 extends life span, delays muscle aging, and improves mitochondrial morphology in AAK-2-DAF-16-dependent manner. Furthermore, PRY-1 is necessary for AAK-2 phosphorylation. Taken together, our data demonstrate that PRY-1 functions in muscles to promote the life span of animals. This study establishes Axin as a major regulator of muscle health and aging.
pry-1 transcriptome contains genes linked to aging and muscle function
pry-1 functions in muscles to maintain life span and mitochondrial network
Muscle-specific overexpression of pry-1 extends life span and promotes muscle health
PRY-1-mediated life span extension depends on AAK-2-DAF-16 signaling
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