Stimulation of epidermal hyperplasia and tumorigenesis by resident p16INK4a-expressing cells

Abstract

p16INK4a (CDKN2A) is a central tumor-suppressor and activator of senescence. We recently found that prolonged expression of p16INK4a in epidermal cells induces hyperplasia and dysplasia through Wnt-mediated stimulation of neighboring keratinocytes. The study suggests a pro-tumorigenic function of p16INK4a in early epidermal lesions, which could potentially be targeted by senolytic therapy.

Keywords

• p16ink4a
• cdkn2a
• senescence
• aging
• epidermis
• wnt