Cellular Senescence: The Villain of Metabolic Disease?: Discovery of a distinct senescent cell population in obesity-induced metabolic dysfunction.

Senescent p21 cells in epididymal white adipose tissue (eWAT) aggravate metabolic dysfunction in obese animals. In obesity, p21 cells are specifically accumulated in stromal vascular fraction of eWAT and they have increased expression of inflammatory genes and NFκB signaling pathway. Transplantation of p21 cells provokes glucose intolerance whereas clearance of p21 cells by senolytic agents relieves insulin resistance in obese animals.