A review in the journal Aging (Aging-US) says senescent cells—often dubbed “zombie cells”—can contribute to wound healing and tissue stability in some settings, even as other senescent cells promote inflammation and age-related disease.
A scientific review published May 4, 2026 in Aging (Aging-US) argues that cellular senescence is more biologically mixed than the popular “all zombie cells are harmful” framing.
The authors write that senescent cells are defined by stable cell-cycle arrest, but are functionally heterogeneous—meaning their effects can differ by cell type, tissue environment, and how senescence is induced. In the review’s framing, some senescent-cell programs can be physiologically useful, including roles in embryonic development, wound healing, and maintaining tissue homeostasis, while other senescent cells contribute to **chronic inflammation and age-related pathology.
The paper—titled “Cellular senescence: from pathogenic mechanisms to precision anti-aging interventions”—lists Jian Deng as first author and Dong Yang as corresponding author, both affiliated with West China Hospital, Sichuan University in Chengdu, China.
Across organ systems, the review surveys evidence and proposed mechanisms for senescence and its downstream effects in tissues that include the liver, lungs, kidneys, heart, adipose tissue, brain, and skin. It also argues that the field is moving toward more selective approaches that aim to identify and target maladaptive senescent-cell subsets while avoiding disruption of potentially beneficial senescent-cell functions.
The review does not claim senescent cells are broadly harmless; rather, it emphasizes that treating all senescent cells as a single target may be overly simplistic and could carry risks if therapies eliminate cells involved in normal repair processes.
