Novel chemokine biomarkers in melanoma^†

The melanoma tumor microenvironment is a complex milieu of cancer, inflammatory, and stromal cells. In this context, chemokines play a pivotal role in recruiting inflammatory cells and influence the tumor, exerting both pro-tumorigenic and anti-tumoral roles. Interactions between these cells is what ultimately hold together and transform the tumor into an efficient machine. A recent study found that chemokines CCL8, CCL15, and CCL20 were upregulated in melanoma cells when co-cultured with macrophages and were associated with poor survival rates. CCL8 and CCL15 also stimulated melanoma cell growth, invasion, and metastasis, and were highly expressed in tumors prone to metastasize, suggesting these chemokines are attractive and independent biomarkers. Understanding the intricated interactions within the tumor microenvironment could lead to prognostic biomarkers and to the development of new therapeutic strategies for melanoma. © 2024 The Author(s). The Journal of Pathology published by John Wiley & Sons Ltd on behalf of The Pathological Society of Great Britain and Ireland.