CD4-positive T cell (interferon gamma positive)

The term "Interferon gamma positive CD4-positive T cell" refers to a functional subset of CD4-positive T cells—commonly known as Th1 cells—that produce the cytokine interferon gamma (IFN‑γ). These cells play an essential role in orchestrating immune responses against intracellular pathogens such as viruses and certain bacteria by activating macrophages and promoting cellular immunity. The presence of these cells is often used as an indicator of Th1-type immune responses and can be measured using intracellular cytokine staining techniques in research and clinical immunology. While they are critical for host defense, dysregulation or overactivity of these cells is implicated in autoimmune diseases due to excessive inflammation[2][3][5]. Note on correctness: This entry does not correspond to a single molecule or canonical therapeutic target but rather describes a functional phenotype within the broader population of CD4-positive T helper lymphocytes. Therefore, it is not considered a standard druggable "target" like receptors or enzymes but rather an important biomarker or readout for immune function studies[3].

Other names

Interferon gamma-producing CD4-positive T cellIFN-γ+ CD4+ T cellTh1 cell (when referring to the subset that produces interferon gamma)