title: T cell receptor Vbeta repertoire expression reflects gastric carcinoma progression.
abstract: Analysis of TCR beta-chain complementarity-determining region size gives an indication of the T cell immune response. We examined CD4+ and CD8+ subgroups of T cells in the peripheral blood (PBL), benign gastric mucosa, and tumor (TIL) lymphocytes of 12 patients with primary gastric carcinomas of both intestinal and diffuse types. The average number of expanded clones in each compartment, expressed by the 24 families of the TCRVbeta repertoire, was analyzed according to tumor histological type, maximal invasive depth, and lymph node metastases. Fewer clones were expressed by the PBL in the cases with lymph node metastases than in those without (CD4+ P = 0.00017, CD8+ P = 0.016). Fewer CD8+ clones were expressed by the PBL in the cases with full thickness tumor infiltration than in those involving only the mucosa and submucosa (P = 0.05). The CD8+ TIL showed significantly fewer clones in the diffuse-type carcinoma than in the intestinal type (P = 0.046).
authors.affiliation: Institute of Digestive Diseases, Fourth Military Medical University, Xian, People's Republic of China.
authors.forename: X Y
authors.initials: XY
authors.lastname: Zhang
authors.forename: W Y
authors.initials: WY
authors.lastname: Chan
authors.forename: B M
authors.initials: BM
authors.lastname: Whitney
authors.forename: D M
authors.initials: DM
authors.lastname: Fan
authors.forename: J H
authors.initials: JH
authors.lastname: Chow
authors.forename: Y
authors.initials: Y
authors.lastname: Liu
authors.forename: E K
authors.initials: EK
authors.lastname: Ng
authors.forename: S C
authors.initials: SC
authors.lastname: Chung
mesh_terms: D000230:Adenocarcinoma / Q000276:immunology* / Q000382:microbiology / Q000473:pathology*; D000328:Adult; D000368:Aged; D002999:Clone Cells; D022801:Complementarity Determining Regions / Q000235:genetics*; D018450:Disease Progression; D005260:Female; D016480:Helicobacter pylori / Q000302:isolation & purification; D006801:Humans; D008207:Lymphatic Metastasis; D008213:Lymphocyte Activation; D016246:Lymphocytes, Tumor-Infiltrating / Q000276:immunology; D008297:Male; D008875:Middle Aged; D009361:Neoplasm Invasiveness; D012334:RNA, Neoplasm / Q000235:genetics; D016693:Receptors, Antigen, T-Cell, alpha-beta / Q000096:biosynthesis* / Q000235:genetics; D013274:Stomach Neoplasms / Q000276:immunology* / Q000382:microbiology / Q000473:pathology*; D013602:T-Lymphocytes, Cytotoxic / Q000276:immunology; D006377:T-Lymphocytes, Helper-Inducer / Q000276:immunology
chemical_list: D022801:Complementarity Determining Regions; D012334:RNA, Neoplasm; D016693:Receptors, Antigen, T-Cell, alpha-beta