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Target intelligence / Profile preview
Helper T cell (CD4-positive T cell) (CD4+ T cell)
- Target
- CD4+ T cell
- Molecular classification
- Other
01
Overview
Helper T cell activation refers to the process by which CD4+ T lymphocytes are stimulated to proliferate and differentiate upon recognition of antigen presented by MHC class II molecules on antigen-presenting cells (APCs), typically involving further costimulatory signals (such as CD28-B7 interaction) and subsequent secretion of cytokines. This activation is essential for orchestrating adaptive immunity, including activation of B cells, cytotoxic T lymphocytes, and other immune effector functions.
- Other names
- Helper T lymphocyteCD4-positive T cellT helper cellTh cell
02
Biological functions
Immune responseSignal transductionCell proliferationCell differentiation
03
Disease associations
InflammationInfectionAutoimmune diseaseCancer (via response modulation)
04
Safety considerations
Immunosuppression (inhibiting activation)Autoimmunity (overactivation)cytokine release syndrome (excess activation)
05
Biomarkers
CD4 countexpression of activation markers (CD25, CD69)cytokine profiles (e.g., IL-2, IFN-γ)
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