Cytokine Signaling in T Helper Cell Responses
Summary
Cytokine signaling underlies the differentiation, activation and function of T helper (Th) cells, which orchestrate adaptive immunity. Naïve CD4+ T cells adopt specialised fates—Th1, Th2, Th17 or regulatory T cells—driven by distinct cytokine milieus. Engagement of cytokine receptors triggers Janus kinases (JAKs) and subsequent phosphorylation of Signal Transducers and Activators of Transcription (STATs), leading to gene expression programmes that lock in lineage identity. For instance, interleukin-12 promotes Th1 responses via STAT4, whereas interleukin-4 engages STAT6 to drive Th2 differentiation and production of immunoglobulin-class switching factors. Interleukin-6 and transforming growth factor-β converge on STAT3 and RORγt to generate Th17 cells implicated in host defence and autoimmunity. Counter-regulatory circuits involving interleukin-10 and transforming growth factor-β restrain excessive inflammation through regulatory T cells. Fine-tuning of receptor subunit composition, competitive STAT activation, negative regulators such as SOCS proteins and protein-tyrosine phosphatases all contribute to the amplitude and duration of signalling. Dysregulation of these pathways underpins allergy, autoimmunity, fibrosis and cancer, and informs the design of targeted therapies that modulate cytokine networks for clinical benefit.
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Cytokine Signaling in T Helper Cell Responses publication trend
The graph below shows the total number of articles in cytokine signaling in t helper cell responses across all publications each year (not limited to Nature Index journals).
Technical terms
Cytokine: A small secreted protein that facilitates communication between immune cells and directs cell function.
T helper cell: A CD4+ lymphocyte subset that orchestrates adaptive immune responses by secreting signature cytokines.
JAK-STAT pathway: A signal transduction cascade in which Janus kinases phosphorylate STAT transcription factors following cytokine receptor engagement.
Allosteric inhibition: Regulation of a protein’s activity through binding of an inhibitor at a site distinct from the active or receptor‐binding interface.
Glycoengineering: The deliberate modification of a protein’s glycan attachments to enhance its stability, pharmacokinetics or biological properties.
References
- Identification and characterisation of anti-IL-13 inhibitory single domain antibodies provides new insights into receptor selectivity and attractive opportunities for drug discovery. Frontiers in Immunology (2023).
- Design of Glycoengineered IL‑4 Antagonists Employing Chemical and Biosynthetic Glycosylation. ACS Omega (2023).
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