Journal
CELL REPORTS
Volume 21, Issue 6, Pages 1471-1480Publisher
CELL PRESS
DOI: 10.1016/j.celrep.2017.10.057
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Funding
- NHLBI [2R01HL051387-18A1, PPG HLI08795]
- AHA [16GRNT31130010]
- NIDDK [5R01DK100814]
- Center for Reproductive Health After Disease from the NIH-NCTRI [P50HD076188]
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Aging drives the occurrence of numerous diseases, including cardiovascular disease (CVD). Recent studies indicate that blood from young mice reduces age-associated pathologies. However, the anti-aging'' factors in juvenile circulation remain poorly identified. Here, we characterize the role of the apelinergic axis in mammalian aging and identify apelin as an anti-aging factor. The expression of apelin (apln) and its receptor (aplnr) exhibits an age-dependent decline in multiple organs. Reduced apln signaling perturbs organismal homeostasis; mice harboring genetic deficiency of aplnr or apln exhibit enhanced cardiovascular, renal, and reproductive aging. Genetic or pharmacological abrogation of apln signaling also induces cellular senescence mediated, in part, by the activation of senescence-promoting transcription factors. Conversely, restoration of apln in 15-month-old wild-type mice reduces cardiac hypertrophy and exercise-induced hypertensive response. Additionally, apln-restored mice exhibit enhanced vigor and rejuvenated behavioral and circadian phenotypes. Hence, a declining apelinergic axis promotes aging, whereas its restoration extends the murine healthspan.
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