MCP-1: Function, regulation, and involvement in disease

•MCP-1 inculpated in the pathogenesis of numerous diseases either directly or indirectly.•Elevated level of MCP-1 has been observed in COVID-19 patients also.•MCP-1 has a vital role in the process of inflammation.•MCP-1 act through migration and infiltration of inflammatory cells and cytokines at the site of inflammation.•MCP-1 attracts or enhances the expression of other inflammatory factors/cells as well. MCP-1 (Monocyte chemoattractant protein-1), also known as Chemokine (CC-motif) ligand 2 (CCL2), is from family of CC chemokines. It has a vital role in the process of inflammation, where it attracts or enhances the expression of other inflammatory factors/cells. It leads to the advancement of many disorders by this main mechanism of migration and infiltration of inflammatory cells like monocytes/macrophages and other cytokines at the site of inflammation. MCP-1 has been inculpated in the pathogenesis of numerous disease conditions either directly or indirectly like novel corona virus, cancers, neuroinflammatory diseases, rheumatoid arthritis, cardiovascular diseases. The elevated MCP-1 level has been observed in COVID-19 patients and proven to be a biomarker associated with the extremity of disease along with IP-10. This review will focus on involvement and role of MCP-1 in various pathological conditions.