An Update on the Effects on PAPP-A Knockout on Longevity in Mice
This study is the first to show that downregulation of PAPP-A expression in adult mice can significantly extend life span.
Importantly, this beneficial longevity phenotype is distinct from the dwarfism of long-lived PAPP-A KO, Ames dwarf, Snell dwarf and growth hormone receptor (GHR) KO mice with germ-line mutations. Thus, downregulation of PAPP-A expression joins other treatment regimens, such as resveratrol, rapamycin and dietary restriction, which can extend life span when started in mice as adults. In a recent study, inducible knockdown of the GHR in young adult female mice increased maximal, but not median, life span. Tissue-specific PAPP-A KO models would provide insight into the tissues and organs that contribute to extended life span and healthspan.
Link: https://doi.org/10.1111/acel.12624
Source: Fight Aging! - Category: Research Authors: Reason Tags: Daily News Source Type: blogs
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