Articles aimed towards readers with some grounding in the biological/medical sciences.
Skeletal muscles are organized into long fibers, and when a fiber breaks the entire fiber is often lost. This made a supporter worry that senolytic therapies might break a muscle fiber and eliminate precious fibers in aging muscles. It appears that the injury at the heart of the questioner’s worry does not happen in practice.
In this update, we review two recent papers that address the question of people with type 2 diabetes who take metformin living longer than people without the disease who don’t, but without the flaw in the 2014 study. We find that, as expected, metformin is a good diabetes drug but shows no sign of being a longevity therapeutic.
UNITY Biotechnology was the first senolytic startup out of the gate, and the failure of its Phase II trial in osteoarthritis was a crushing disappointment. A careful look back at the underlying science and three new scientific papers give us a good idea why and suggest ways to move forward.
One way senescent cells accumulate is when one senescent cell turns a neighboring cell senescent through SASP secretion. SRF scientists have discovered that these secondary senescent cells are resistant to the classic senolytic drugs. However, they have identified a new senolytic strategy that kills these senescent cells.
Metformin has been proposed as an “anti-aging drug,” and scientists are organizing TAME, a major clinical trial to test the idea. In the final installment of this 5-part series, we look at TAME itself: how it’s structured, how it’s justified, and how the results could impact the push for longevity therapeutics.
Metformin has been proposed as an “anti-aging drug,” and scientists are organizing TAME, a major clinical trial to test the idea. In Part 4 of this 5-part series, we look at human data on metformin and neurodegenerative aging diseases.
Metformin has been proposed as an “anti-aging drug,” and scientists are organizing TAME, a major clinical trial to test the idea. In Part 3 of this 5-part series, we look at human trials of metformin in prevention and treatment of cancer.
Metformin has been proposed as an “anti-aging drug,” and scientists are organizing TAME, a major clinical trial to test the idea. In Part 2 of this 5-part series, we look at some of the human studies on metformin, including a flawed observational study that created the illusion that diabetics on metformin actually live longer than people without diabetes.
Metformin has been proposed as an “anti-aging drug,” and scientists are organizing TAME, a major clinical trial to test the idea. In Part 1 of this 5-part series, we look at the animal studies underlying this idea.
In heterochronic parabiosis, joining the circulatory systems of young and old mice causes the older animal to recover some features of youth. The effect has been widely assumed to be driven by pro-youth factors in younger blood, but an alternative hypothesis is possible: that the procedure is instead diluting pro-aging factors in the older partner.
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