Duality of Longevity Drug Explained

A Penn- and MIT-led team explained how rapamycin, a drug that extends mouse lifespan, also causes insulin resistance. The researchers showed in an animal model that they could, in principle, separate the effects, which depend on inhibiting two protein complexes, mTORC1 and mTORC2, respectively. The study suggests that molecules that specifically inhibit mTORC1 may combat age-related diseases without the insulin-resistance side effect, which can predispose people to diabetes.

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