Pro-inflammatory cytokines and chemokines

Pro-inflammatory cytokines and chemokines are a broad category of small signaling proteins secreted primarily by immune cells like macrophages, T-cells, and B-cells, as well as endothelial cells and fibroblasts. They function as key mediators of the innate and adaptive immune responses, facilitating cell-to-cell communication and directing the migration of leukocytes to sites of injury or infection through chemotaxis (StatPearls, 2023). Common examples include Tumor Necrosis Factor-alpha (TNF-α), Interleukin-1 (IL-1), Interleukin-6 (IL-6), and Interleukin-8 (IL-8/CXCL8). Dysregulation or overproduction of these molecules is central to the pathogenesis of chronic inflammatory diseases, autoimmune conditions, and acute systemic inflammatory responses like cytokine release syndrome (Nature Reviews Immunology, 2018). Pharmacological intervention typically involves the use of monoclonal antibodies, decoy receptors, or small molecule inhibitors to neutralize the ligands or block their receptors, thereby dampening the inflammatory cascade. However, because these proteins are essential for normal host defense, their inhibition carries risks such as increased susceptibility to opportunistic infections and impaired wound healing (PubMed, 2021).

Other names

Inflammatory cytokinesPro-inflammatory mediatorsInflammatory chemokinesPro-inflammatory factors

Neutralization of circulating ligands, competitive inhibition of cytokine receptors, and inhibition of downstream signaling pathways.