title: The inter-relatedness and interdependence of mouse T cell receptor gammadelta+ and alphabeta+ cells.
abstract: Although T cell receptor (TCR)gammadelta+ and TCRalphabeta+ cells are commonly viewed as functionally independent, their relatedness and potential interdependence remain enigmatic. Here we have identified a gene profile that distinguishes mouse gammadelta cell populations from conventional alphabeta T cells. However, this profile was also expressed by sets of unconventional alphabeta T cells. Therefore, whereas TCR specificity determines the involvement of a T cell in an immune response, the cell's functional potential, as assessed by gene expression, does not segregate with the TCR. By monitoring the described gene profile, we show that gammadelta T cell development and function in TCRbeta-deficient mice was impaired because of the absence of alphabeta T cell progenitors. Thus, normal gammadelta cell development is dependent on the development of conventional alphabeta T cells.
mesh_terms: D000818:Animals; D002454:Cell Differentiation / Q000235:genetics / Q000276:immunology; D051786:Cyclic AMP Response Element Modulator; D004268:DNA-Binding Proteins / Q000235:genetics / Q000276:immunology; D005434:Flow Cytometry; D020869:Gene Expression Profiling; D019672:Genes, T-Cell Receptor / Q000235:genetics* / Q000276:immunology; D006182:H-Y Antigen / Q000235:genetics / Q000276:immunology; D008297:Male; D051379:Mice; D008810:Mice, Inbred C57BL; D018345:Mice, Knockout; D008822:Mice, Transgenic; D012333:RNA, Messenger / Q000096:biosynthesis / Q000235:genetics; D016693:Receptors, Antigen, T-Cell, alpha-beta / Q000235:genetics* / Q000276:immunology; D016692:Receptors, Antigen, T-Cell, gamma-delta / Q000235:genetics* / Q000276:immunology; D012097:Repressor Proteins; D020133:Reverse Transcriptase Polymerase Chain Reaction; D013601:T-Lymphocytes / Q000166:cytology / Q000276:immunology*
chemical_list: D004268:DNA-Binding Proteins; D006182:H-Y Antigen; D012333:RNA, Messenger; D016693:Receptors, Antigen, T-Cell, alpha-beta; D016692:Receptors, Antigen, T-Cell, gamma-delta; D012097:Repressor Proteins; D051786:Cyclic AMP Response Element Modulator