title: Rapid identification of local T cell expansion in inflammatory organ diseases by flow cytometric T cell receptor Vbeta analysis.
abstract: Oligoclonal expansion of antigen-specific T cells occurs frequently during inflammatory diseases. These cells may persist for a long time at high frequency in the body and be enriched in the affected tissues. As a screening test for expanded cell T cell populations at sites of inflammation, we developed an optimized methodology for flow-cytometry-based quantification of T cell receptor Vbeta (TCRBV) expression. We first validated the specificity of a TCRBV-specific monoclonal antibody set by direct comparison with PCR-based analysis of mono- and polyclonal T cell samples. This monoclonal antibody (mAb) panel recognized approximately two thirds of the T cell receptor alpha/beta repertoire in a group of 64 healthy donors and allowed defining TCR usage in the CD4+ and CD8+ subsets. The reliable detection of expanded Vbeta gene families in T cell populations was confirmed in experiments on superantigen-stimulated T cells. Through differential TCR analysis on T cell subpopulations in cerebrospinal fluid and blood in patients with acute encephalitis, we were able to identify locally expanded CD8+ T cells. The power of this approach affords not only high-throughput comparative TCR analysis for immunological studies in vitro, but also rapid ex vivo identification of cell populations enriched in organ compartments during inflammatory diseases.
authors: Neuroimmunology Branch, NINDS, National Institutes of Health, Bethesda, MD, USA.
authors: P A
authors: PA
authors: Muraro
authors: M
authors: M
authors: Jacobsen
authors: A
authors: A
authors: Necker
authors: J W
authors: JW
authors: Nagle
authors: R
authors: R
authors: Gaber
authors: N
authors: N
authors: Sommer
authors: W H
authors: WH
authors: Oertel
authors: R
authors: R
authors: Martin
authors: B
authors: B
authors: Hemmer
mesh_terms: D000208:Acute Disease; D000293:Adolescent; D000328:Adult; D000368:Aged; D000911:Antibodies, Monoclonal / Q000276:immunology; D000918:Antibody Specificity; D002648:Child; D002675:Child, Preschool; D002999:Clone Cells; D004660:Encephalitis / Q000097:blood / Q000134:cerebrospinal fluid / Q000276:immunology; D018984:Epitopes, T-Lymphocyte / Q000276:immunology; D005434:Flow Cytometry; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008213:Lymphocyte Activation / Q000276:immunology*; D008875:Middle Aged; D016693:Receptors, Antigen, T-Cell, alpha-beta / Q000032:analysis / Q000276:immunology*; D018089:Superantigens / Q000276:immunology; D016176:T-Lymphocyte Subsets / Q000276:immunology; D013601:T-Lymphocytes / Q000276:immunology*
chemical_list: D000911:Antibodies, Monoclonal; D018984:Epitopes, T-Lymphocyte; D016693:Receptors, Antigen, T-Cell, alpha-beta; D018089:Superantigens