Retinoblastoma protein is the likely common effector for distinct anti-aging pathways

TL;DR

This paper proposes that the retinoblastoma tumor suppressor protein (RB) is a key effector in various anti-aging pathways, based on structural insights and comparisons with other tumor suppressors like p53.

Contribution

It introduces a novel hypothesis that RB plays a central role in anti-aging mechanisms, supported by protein structure analysis and its relation to other tumor suppressors.

Findings

RB likely acts as a common effector in anti-aging pathways

Structural insights support RB's role in aging regulation

Comparison with p53 highlights distinct functions in aging

Abstract

The multiple worlds of genetically manipulated laboratory organisms such as transgenic mice or worms with certain gene mutations are somewhat reminiscent of parallel worlds in quantum mechanics. So are various models of aging tested in such organisms. In this context, the tumor suppressor p53 has been found to either accelerate or delay aging, the latter, for instance, in conjunction with ARF, another tumor suppressor, as shown very recently. To more easily determine which of these artificial settings comes closest to real life, I discuss here their features in the light of my protein structure-based insights that have led me to propose a physiological anti-aging role for the retinoblastoma tumor suppressor protein (RB) over the past four years.