JE (MCP-1, CCL2)

JE or MCP-1, also known as monocyte chemotactic and activating factor (MCAF), was initially purified based on its ability to chemoattract monocytes. Subsequent to its cloning and sequencing, it became evident that this protein is also identical to the product of the human JE gene. The JE gene, originally identified in mouse fibroblasts, is a platelet-derived growth factor (PDGF) -inducible gene.