A peer-reviewed study places nerve-support cells in the cellular interactions that help skin tumours begin. Human precancerous lesions contained activated glia, while removing a glial population reduced tumour initiation in mice. The experiments connect ultraviolet damage, immune cells and glial activation, without establishing a preventive treatment for people.
Nerve-support cells joined the early cellular changes surrounding skin cancer in a peer-reviewed study. The researchers found activated glia in human precancerous lesions and cutaneous squamous cell carcinoma, a cancer arising from the skin’s epithelial cells. In mice, the same glial population appeared before invasive tumours. These cells carried SOX10 and NGFR markers and differed from the more mature glia normally associated with nerve bundles.[1]
The causal experiments used a mouse model combining ultraviolet exposure with expression of a protein from human papillomavirus, specifically HPV8. Conditional disruption of the Sox10 gene depleted a glial population and reduced tumour initiation. Tissue staining, single-cell RNA sequencing and cell cultures helped trace the surrounding network of immune cells, fibroblasts and keratinocytes. The intervention tested a genetically sensitized model rather than ordinary human exposure.[1]
Experiments implicated IL-33 signalling through macrophages, immune cells that respond to tissue damage, in activating glia after ultraviolet exposure. The glial cells also favoured the development of a particular macrophage subtype linked to conditions supporting tumours. Human tissue samples supplied observations of the corresponding cells, while the interventions remained preclinical. The study reports no patient treatment trial; effects on normal nerves and clinical safety require further investigation.[1]
