Fight Aging! Newsletter, February 10th 2020
In conclusion, the concept of an epigenetic clock is compelling, but caution should be taken in interpreting associations with age acceleration. Association tests of age acceleration should include age as a covariate.
A Discussion of Recent Work on Allotopic Expression of Mitochondrial Genes at the SENS Research Foundation
https://www.fightaging.org/archives/2020/02/a-discussion-of-recent-work-on-allotopic-expression-of-mitochondrial-genes-at-the-sens-research-foundation/
A paper published last month outlines recent progress on allotopic expression of mitochondrial genes carried out by the SENS Research Foundation team. Allotopic expression is the name given to the process of putting copies of mitochondrial genes into the nuclear genome, suitably altered to allow proteins to be generated and shipped back to the mitochondria where they are needed. Mitochondria replicate like bacteria, and some forms of stochastic mitochondrial DNA damage can make mitochondria both dysfunctional and able to outcompete their undamaged peers. This is thought to be an important contribution to aging, resulting a small but damaging population of cells that are overtaken by broken mitochondria and which export harmful reactive molecules into the surrounding tissues.
Having a backup supply of mitochondrial proteins can in principle block these consequences of mitochondrial DNA damage, and thus remove this contribution to the aging process. Proof of concept has been demonstr...
Source: Fight Aging! - Category: Research Authors: Reason Tags: Newsletters Source Type: blogs
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