Cytokine activity

The term **cytokine activity** refers to the collective biological functions carried out by a broad category of small, secreted proteins—cytokines—that regulate and mediate immune and inflammatory responses, hematopoiesis, cell proliferation, apoptosis, and other aspects of intercellular communication[1][3][7][9]. Cytokines include subfamilies such as interleukins, interferons, chemokines, tumor necrosis factors, and growth factors. They typically act by binding to specific cell surface receptors, initiating intracellular signaling cascades such as the JAK/STAT pathway, and modulating the behavior of immune and non-immune cells[2][7]. Cytokine dysregulation is implicated in various diseases including cancer, autoimmune conditions, systemic inflammatory syndromes, and severe infectious diseases[1][5]. **Note:** "Cytokine activity" is not an individual protein, gene, receptor, or enzyme, but a general functional label. For structured molecular data, specific cytokines (e.g., "Interleukin-6", "Tumor necrosis factor alpha") or their receptors should be used.

Other names

cytokinescytokine signaling proteinspro-inflammatory cytokinesanti-inflammatory cytokinesinterleukinsinterferonstumor necrosis factorschemokines