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Ageing: Transfusing blood from an previous mouse to a youthful mouse causes mobile ageing

The transfusion led an elevated variety of senescent cells – which accumulate as we become old – within the younger mice, suggesting that mobile ageing is not only a case of damage and tear

Well being

5 August 2022

Transfusing the blood of an old mouse into a younger rodent could age the latter animal

Transfusing the blood of an previous mouse right into a youthful rodent could age the latter animal


Transfusing younger mice with blood from older rodents rapidly triggers ageing, suggesting that mobile ageing isn’t only a case of damage and tear.

There’s a longstanding speculation that surgically connecting an previous mouse with a younger rodent causes a switch of blood that de-ages the older animal. Whereas this advantages the older mouse, the consequences on the younger donor rodent have been much less clear.

To be taught extra, Irina Conboy on the College of California, Berkeley, and her colleagues transfused blood between younger and previous mice. These aged 3 months acquired blood from animals that have been approaching 2 years previous.

Two weeks later, the younger mice had an elevated variety of senescent cells – cells within the liver, kidneys and muscle tissues which might be broken and cease dividing, however don’t die. These cells accumulate as a standard a part of ageing, starting after a couple of years of life in individuals.

Power assessments additionally revealed the younger mice turned weaker after receiving the older rodents’ blood.

Total, the outcomes recommend that senescent cells will be induced in younger animals exterior of chronological ageing.

“Cell senescence is barely a part of the method of ageing,” says Conboy. “That opens new horizons and helps clarify why senolytics [drugs that clear senescent cells in the body] up to now in medical trials have been much less profitable than individuals hoped.”

The experiment might also help researchers who’re attempting to sort out the well being problems with ageing.

“It is a very thrilling research that highlights a possible anti-ageing remedy,” says Roman Bauer on the College of Surrey within the UK.

Bauer highlights how earlier analysis means that clearing senescent cells from mice rejuvenates their blood. Referring to the Berkeley research, he says: “The analysis additionally demonstrates alternatives for senolytics, so medication that eradicate senescent cells, which we’re presently additionally investigating for most cancers remedy.”

Journal reference: Nature Metabolism, DOI:

Extra on these subjects:



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