title: Intracellular cytokine staining for TGF-beta.
abstract: TGF-beta is a well-described immunoregulatory molecule that is produced by most cell types. Many studies have been aimed at investigating the role played by TGF-beta in different cell types and situations. Most methods of measuring TGF-beta have previously relied on enzyme-linked immunosorbent assay (ELISA) or assays of its anti-proliferative effects on various cell lines. Both assays, though useful, cannot be used to effectively identify the cells that are producing TGF-beta in a mixture of cells. It is especially important to know the source and dynamics of TGF-beta secretion in cell culture studies since most cell types are known to be capable of producing TGF-beta. We describe here a technique of qualitative and quantitative measurement of TGF-beta production using flow cytometry. Previous work by others has led to the production of polyclonal and monoclonal antibodies to human and other mammalian TGF-beta. We have developed an intracellular cytokine staining for human TGF-beta using a monoclonal antibody, TB21.
authors.affiliation: Department of Microbiology and Immunology, University of North Carolina, CB#7290 MEJ, Chapel Hill, NC 27599-7290, USA.
authors.forename: M L
authors.initials: ML
authors.lastname: Garba
authors.forename: J A
authors.initials: JA
authors.lastname: Frelinger
mesh_terms: D000818:Animals; D000911:Antibodies, Monoclonal; D002460:Cell Line; D005434:Flow Cytometry / Q000379:methods; D006801:Humans; D007963:Leukocytes, Mononuclear / Q000276:immunology; D013194:Staining and Labeling / Q000379:methods*; D016212:Transforming Growth Factor beta / Q000032:analysis* / Q000096:biosynthesis / Q000276:immunology
chemical_list: D000911:Antibodies, Monoclonal; D016212:Transforming Growth Factor beta