CCR5 (C-C Motif Chemokine Receptor 5 (Gene/Pseudogene)) is a Protein Coding gene. Diseases associated with CCR5 include West Nile Virus and Diabetes Mellitus, Insulin-Dependent, 22. Among its related pathways are GPCRs, Other and Akt Signaling. Gene Ontology (GO) annotations related to this gene include G-protein coupled receptor activity and phosphatidylinositol phospholipase C activity. An important paralog of this gene is CCR2.
CCR5's cognate ligands include CCL3, CCL4 (also known as MIP 1α and 1β, respectively), and CCL3L1. CCR5 furthermore interacts with CCL5 (a chemotactic cytokine protein also known as RANTES).
CCR5 is predominantly expressed on T cells, macrophages, dendritic cells, eosinophils, microglia and a subpopulation of either breast or prostate cancer cells. The expression of CCR5 is selectively induced during the cancer transformation process and is not expressed in normal breast or prostate epithelial cells. Approximately 50% of human breast cancer expressed CCR5, primarily in triple negative breast cancer. CCR5 inhibitors blocked the migration and metastasis of breast and prostate cancer cells that expressed CCR5, suggesting that CCR5 may function as a new therapeutic target. Recent studies suggest that CCR5 is expressed in a subset of cancer cells with characteristics of cancer stem cells.