Senescence-resistant human mesenchymal progenitor cells counter aging in primates

Area of Science:

• Gerontology and Regenerative Medicine
• Cellular Biology and Aging
• Primate Models in Aging Research

Background:

• Stem cell function deteriorates with age, impacting overall health.
• The potential of stem cell replenishment to counteract aging is not well understood.
• Cellular senescence and chronic inflammation are key hallmarks of aging.

Purpose of the Study:

• To develop and test senescence-resistant progenitor cells (SRCs) for anti-aging applications.
• To evaluate the efficacy and safety of SRCs in an aged primate model.
• To investigate the mechanisms underlying SRC-mediated rejuvenation.

Main Methods:

• Genetically engineered human mesenchymal progenitor cells to be resistant to senescence (SRCs).
• Conducted a 44-week intravenous delivery trial of SRCs in aged macaques.
• Monitored systemic aging indicators, cognitive function, and tissue health.

Main Results:

• SRCs significantly reduced markers of aging, including cellular senescence, inflammation, and tissue degeneration.
• No adverse effects were observed during the 44-week trial.
• SRC treatment improved brain architecture, cognitive function, and reproductive health in aged macaques.
• Exosomes derived from SRCs demonstrated anti-senescence properties.

Conclusions:

• Genetically modified human mesenchymal progenitors can effectively slow aging in primates.
• SRCs represent a promising regenerative therapy for age-related decline.
• Further research into SRCs and their exosomes could unlock new anti-aging strategies.