Pro-inflammatory cytokines and enzymes

Pro-inflammatory cytokines and enzymes are a diverse group of proteins that play a central role in initiating and maintaining the inflammatory response (Dinarello, 2000; PubMed: 10988210). Cytokines such as Tumor Necrosis Factor-alpha (TNF-alpha), Interleukin-1 (IL-1), and Interleukin-6 (IL-6) function as signaling molecules that coordinate the activity of immune cells (Zhang & An, 2007; PubMed: 17426506). Pro-inflammatory enzymes, including Cyclooxygenase-2 (COX-2) and Inducible Nitric Oxide Synthase (iNOS), catalyze the production of inflammatory mediators like prostaglandins and nitric oxide (StatPearls, 2023; NBK493173). Under normal physiological conditions, these molecules are essential for wound healing and defense against pathogens. However, their chronic overproduction is linked to the pathogenesis of various inflammatory and autoimmune disorders, such as rheumatoid arthritis and Crohn's disease (Nature Reviews Drug Discovery, 2017; 16:869-891). In the context of oncology, these factors can promote a pro-tumorigenic microenvironment and facilitate metastasis. Therapeutic intervention typically involves the use of monoclonal antibodies to neutralize cytokines or small molecule inhibitors to block enzymatic pathways. While effective, targeting these pathways can lead to significant side effects, most notably an increased susceptibility to infections due to suppressed immune surveillance.

Other names

Inflammatory mediatorsPro-inflammatory factorsInflammatory signaling moleculesPro-inflammatory proteins

Drugs targeting this group work by either neutralizing the cytokine ligands, blocking their respective receptors, or inhibiting the catalytic activity of enzymes involved in the inflammatory cascade.