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Scientists Think Flipping a Single Switch in Your Body Could Slow Down Aging
Yahoo News Canada • • health
Key Points:
- A new study reveals that aging immune cells, specifically tissue-resident macrophages, fail to clear dead neutrophils, leading to chronic inflammation and contributing to the aging process.
- Researchers identified that the EP2 receptor accumulates on aging macrophages, impairing their ability to remove senescent neutrophils, which are the body's most common white blood cells.
- Mice genetically engineered to lack the EP2 gene showed significantly younger blood protein profiles and reduced signs of neutrophil senescence compared to normal mice, indicating a potential pathway to slow aging.
- The liver, rich in tissue-resident macrophages, plays a crucial role in aging-related changes, and similar cellular trends were observed in human liver disease data, suggesting relevance to human aging.
- Targeting EP2 specifically is challenging because PGE2, the hormone interacting with EP2, has multiple beneficial roles, so future research aims to selectively inhibit EP2 without disrupting other functions.
