Clinically Relevant Aberrant Filip1l DNA Methylation Detected in a Murine Model of Cutaneous Squamous Cell Carcinoma

The study investigated DNA methylation in cutaneous squamous cell carcinoma (cSCC) using a murine model and found increased methylation in both mouse and human cSCC, particularly at the Filip1l gene, a known tumor suppressor. This hypermethylation suggested a role in silencing tumor suppressor genes, contributing to tumor progression. The murine model showed similarities to human cSCC, indicating its clinical relevance. The study identified two cSCC subtypes, with the stem cell-like subtype showing higher methylation levels and potential aggressiveness. The findings suggested potential biomarkers for aggressive cSCC and highlighted the need for further research on FILIP1L's role and regulation.