
New research suggests that Fusobacterium nucleatum, a bacterium associated with periodontitis and age-related disorders, may accelerate aging. The study examined how long-term exposure to F. nucleatum affects gingival epithelial cells, finding that it induces a senescence-like phenotype. It is characterized by increased expression of pro-senescence markers like p16INK4a, p21, and pRb, reduced counter-balancing markers (p14ARF and p53) and Lamin-B1. Additionally, wound healing capacity in these cells was impaired. These findings imply that F. nucleatum could impact periodontal tissue repair, potentially increasing susceptibility to periodontitis as people age.
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