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Blocking HMGB1 improved muscle regeneration in mice in a 2025 study

Researchers reported lower senescence markers and inflammation after inhibiting HMGB1 in an experimental mouse model.

MassimoMA
1 Source, 366d ago, first seen 366d ago

TLDR

A 2025 Metabolism study linked a form of HMGB1 to senescence-like changes in cells and mice. Researchers reported that inhibiting HMGB1 reduced senescence and inflammation and improved muscle regeneration in a middle-aged mouse injury model. The findings concern experimental models, not human rejuvenation.

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259.7K

1 Source, first seen 366d ago

3.5K likes109 comments1.7K saves574 reposts

Combined views

259.7K

1 Source, first seen 366d ago

3.5K likes109 comments1.7K saves574 reposts

Researchers reported that inhibiting the protein HMGB1 improved muscle regeneration in a muscle-injury model involving middle-aged mice. The study, published in Metabolism in July 2025, examined how a form of HMGB1, called ReHMGB1, could spread cellular senescence, a state in which cells stop dividing.

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The protein's form mattered

ReHMGB1 induced senescence-like changes in cultured cells and mouse tissues; its oxidized form did not. Administering ReHMGB1 to young mice increased senescence markers across multiple tissues.

Inhibition produced the opposite result: reduced senescence and systemic inflammation, alongside enhanced muscle regeneration. The authors identified extracellular HMGB1 as a potential target for age-related conditions. Those cell and mouse experiments do not establish that blocking it rejuvenates people.

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3 Sources

Metabolism - Clinical and ExperimentalPropagation of senescent phenotypes by extracellular HMGB1 is dependent on its redox state
Korea University PurePropagation of senescent phenotypes by extracellular HMGB1 is dependent on its redox state
Massimo@Rainmaker1973A groundbreaking medical study revealed that aging may be transmitted through the bloodstream via a protein called HMGB1. When researchers blocked this protein in animal tests, they observed remarkable results: damaged tissues began to repair themselves, and some age-related decline was reversed. This discovery suggests that aging is not simply an inevitable process of cell breakdown but may be influenced by specific molecular signals. If these signals can be controlled, aging could be slowed — or even partially reversed. Such treatments could revolutionize medicine, offering new ways to fight diseases like Alzheimer’s, arthritis, and organ failure, all of which are tied to aging. However, researchers caution that human trials are still far away. The study fuels hope that one day aging itself might be treated as a medical condition, reshaping human health and longevity.366d
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    3 Sources

    Metabolism - Clinical and ExperimentalPropagation of senescent phenotypes by extracellular HMGB1 is dependent on its redox state
    Korea University PurePropagation of senescent phenotypes by extracellular HMGB1 is dependent on its redox state
    Massimo@Rainmaker1973A groundbreaking medical study revealed that aging may be transmitted through the bloodstream via a protein called HMGB1. When researchers blocked this protein in animal tests, they observed remarkable results: damaged tissues began to repair themselves, and some age-related decline was reversed. This discovery suggests that aging is not simply an inevitable process of cell breakdown but may be influenced by specific molecular signals. If these signals can be controlled, aging could be slowed — or even partially reversed. Such treatments could revolutionize medicine, offering new ways to fight diseases like Alzheimer’s, arthritis, and organ failure, all of which are tied to aging. However, researchers caution that human trials are still far away. The study fuels hope that one day aging itself might be treated as a medical condition, reshaping human health and longevity.366d
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