Scientists are discovering that some of the cells linked to aging may also be key to staying healthy.
A growing body of research is changing how scientists view one of aging biology’s most studied cell types: senescent cells, often called “zombie cells.” While these cells have long been associated with aging and chronic disease, new evidence suggests their role in the body is far more complex than previously believed.
A review published in Aging-US, titled “Cellular senescence: from pathogenic mechanisms to precision anti-aging interventions,” explores how senescent cells contribute to aging throughout the body and why future anti-aging therapies may need a much more targeted approach.
The review was led by first author Jian Deng and corresponding author Dong Yang of the Department of Targeting Therapy and Immunology at the Cancer Center of West China Hospital, Sichuan University in Chengdu, China.
Senescent Cells Are Not Always Harmful
Senescent cells are cells that have permanently stopped dividing. For years, they have largely been viewed as harmful byproducts of aging because they accumulate over time and release inflammatory molecules that can damage surrounding tissues.
However, researchers now recognize that senescent cells are not universally detrimental. In some situations, they serve important functions, including supporting wound healing, aiding embryonic development, and helping maintain normal tissue balance.
This growing understanding is reshaping how scientists think about aging and age-related disease.
