An Example of Senolytics Impoving Metabolic Function in Old Mice

The first senolytic therapy to be tested in mice and humans was the combination of dasatinib and quercetin. This continues to be tested in human trials by the Mayo Clinic, and has been shown to reduce the burden of senescent cells in humans to much the same degree as it does in mice. It remains to be seen as to whether any of the many forms of senolytic treatment under development are very much better at clearing senescent cells from aged tissues than dasatinib and quercetin. Either way, it is likely that the use of multiple different senolytics will be better than one alone, due to tissue by tissue differences in biodistribution and effectiveness. Aging results in an elevated burden of senescent cells, senescence-associated secretory phenotype (SASP), and tissue infiltration of immune cells contributing to chronic low-grade inflammation and a host of age-related diseases. Recent evidence suggests that the clearance of senescent cells alleviates chronic inflammation and its associated dysfunction and diseases. However, the effect of this intervention on metabolic function in old age remains poorly understood. Here, we demonstrate that dasatinib and quercetin (D&Q) have senolytic effects, reducing age-related increase in senescence-associated β-galactosidase, expression of p16 and p21 gene and P16 protein in perigonadal white adipose tissue (pgWAT). This treatment also suppressed age-related increase in the expression of a subset of pro-inflammatory SASP g...
Source: Fight Aging! - Category: Research Authors: Tags: Daily News Source Type: blogs