Understanding Cytokines, Pathogen Responses, and JAK1/JAK2 Inhibition: From Diagnostics to Therapeutic Implications
Cytokines are small, potent proteins released primarily by immune cells that act as chemical messengers, regulating immunity, inflammation, and hematopoiesis. Among them, interferons are a class of cytokines that play a crucial role in antiviral defense by triggering the JAK-STAT signaling pathway , a mechanism reliant on Janus kinases such as JAK1 and JAK2 . These enzymes are integral to the body's immune response, but when dysregulated, they contribute to various diseases, including autoimmune disorders, cancers, and infections. The Role of Cytokines in Health and Disease Cytokines mediate the activation, differentiation, and proliferation of immune cells. Their balance determines whether the immune system mounts an aggressive defense, maintains tolerance, or becomes pathologically inflamed. Key cytokine families include: Pro-inflammatory : IL-1β, IL-6, TNF-α, IFN-γ Anti-inflammatory : IL-10, IL-4, IL-13 Chemokines : MCP-1, MIP-1α, RANTES Growth factors : VEGF, G-CS...