SIRT7 tagged posts

In the absence of SIRT7, a human primary cell displays multiple nucleoli. DNA was stained with DAPI (turquoise) and nucleolus was stained with anti-fibrillarin (red).

Aging is a process of gradual deterioration from exposure to time and the elements; this process begins with deterioration deep inside every cell. Researchers from Stanford University and the VA Palo Alto Health Care System (VAPAHCS) have identified a protein that guards cells against senescence – aging-related problems – by protecting a particularly vulnerable set of genes. The study is published in the July 13 issue of the Journal of Biological Chemistry.

The genes that encode components of the ribosome – the protein-making machine of the cell – are abundant and constantly in use...