"Aging Is Reversible—at Least in Human Cells and Live Mice"

[KHashmi317]

"Changes to gene activity that occur with age can be turned back, a new study shows ..."

By Karen Weintraub on December 15, 2016

https://www.scientificamerican.com/article/aging-is-reversible-at-least-in-human-cells-and-live-mice/#

Have only skimmed this new article, so I won't comment.

 

 

[AlPater]

It seems to me to be an impressive feat.  I kind of agree with Kaeberlein, though.  You can read the full text yourself:

 

In Vivo Amelioration of Age-Associated Hallmarks by Partial Reprogramming

Online Extra

Alejandro Ocampo, Pradeep Reddy, Paloma Martinez-Redondo, Aida Platero-Luengo, Fumiyuki Hatanaka, Tomoaki Hishida, Mo Li, David Lam, and others

Cell, Vol. 167, Issue 7, p1719–1733.e12

Published in issue: December 15, 2016

http://www.cell.com/cell/fulltext/S0092-8674(16)31664-6

Highlights

•Partial reprogramming erases cellular markers of aging in mouse and human cells

•Induction of OSKM in progeria mice ameliorates signs of aging and extends lifespan

•In vivo reprogramming improves regeneration in 12-month-old wild-type mice

Summary

Aging is the major risk factor for many human diseases. In vitro studies have demonstrated that cellular reprogramming to pluripotency reverses cellular age, but alteration of the aging process through reprogramming has not been directly demonstrated in vivo. Here, we report that partial reprogramming by short-term cyclic expression of Oct4, Sox2, Klf4, and c-Myc (OSKM) ameliorates cellular and physiological hallmarks of aging and prolongs lifespan in a mouse model of premature aging. Similarly, expression of OSKM in vivo improves recovery from metabolic disease and muscle injury in older wild-type mice. The amelioration of age-associated phenotypes by epigenetic remodeling during cellular reprogramming highlights the role of epigenetic dysregulation as a driver of mammalian aging. Establishing in vivo platforms to modulate age-associated epigenetic marks may provide further insights into the biology of aging.

Edited December 16, 2016 by AlPater