title: gammadelta T lymphocytes count is normal and expandable in peripheral blood of patients with follicular lymphoma, whereas it is decreased in tumor lymph nodes compared with inflammatory lymph nodes.
abstract: gammadelta T lymphocytes are attractive effector cells for immunotherapy. In vitro, they can be expanded and kill efficiently a variety of tumor cells. The frequency and distribution of gammadelta T lymphocytes were compared in tumor lymph nodes of 51 patients with follicular lymphoma lymph nodes (FL-LNs) and 28 patients with inflammatory lymph nodes (I-LNs). gammadelta and CD8 T lymphocytes were less abundant in FL-LNs than in I-LNs (p <or= 10(-7)). These lymphocytes were localized in the perifollicular zone outside of the tumor follicles. Perifollicular gammadelta T lymphocytes expressed CCR7, in contrast to peripheral blood gammadelta T lymphocytes and both perifollicular and peripheral blood gammadelta T lymphocytes expressed CXCR4. The very low number of perifollicular gammadelta T lymphocytes in FL-LNs could be explained in part by migratory problems because of absence of CCL19 expression in FL-LNs compared with I-LNs. Conversely, CCL21 and CXCL12 were similarly expressed in both FL-LNs and I-LNs. CCL19 and CCL21 were expressed in high endothelial venules and lymphatic vessels, whereas CXCL12 was expressed by stromal cells surrounding high endothelial venules and lymphatic vessels. Peripheral gammadelta T lymphocytes from 34 patients with FL, expanded with Phosphostim and IL-2 in vitro, had the same expansion capacity as those from healthy individuals. Thus, gammadelta T lymphocytes can be an attractive source for adoptive immunotherapy in patients with FL, providing they may home in tumor LNs.
authors: INSERM, France.
authors: Mounia Sabrina
authors: MS
authors: Braza
authors: Anouk
authors: A
authors: Caraux
authors: Thérèse
authors: T
authors: Rousset
authors: Sylvie
authors: S
authors: Lafaye de Micheaux
authors: Hélène
authors: H
authors: Sicard
authors: Patrick
authors: P
authors: Squiban
authors: Valérie
authors: V
authors: Costes
authors: Bernard
authors: B
authors: Klein
authors: Jean-François
authors: JF
authors: Rossi
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D018414:CD8-Positive T-Lymphocytes / Q000276:immunology; D054415:Chemokine CCL19 / Q000096:biosynthesis; D054421:Chemokine CCL21 / Q000096:biosynthesis; D054377:Chemokine CXCL12 / Q000096:biosynthesis; D002648:Child; D002675:Child, Preschool; D005260:Female; D005434:Flow Cytometry; D006801:Humans; D007150:Immunohistochemistry; D016130:Immunophenotyping; D008198:Lymph Nodes / Q000473:pathology*; D008224:Lymphoma, Follicular / Q000097:blood* / Q000276:immunology* / Q000473:pathology*; D008297:Male; D008875:Middle Aged; D016692:Receptors, Antigen, T-Cell, gamma-delta / Q000276:immunology; D054400:Receptors, CCR7 / Q000096:biosynthesis; D019718:Receptors, CXCR4 / Q000096:biosynthesis; D016176:T-Lymphocyte Subsets / Q000276:immunology; D013601:T-Lymphocytes / Q000276:immunology*; D055815:Young Adult
chemical_list: C515370:CCR7 protein, human; C527276:CXCR4 protein, human; D054415:Chemokine CCL19; D054421:Chemokine CCL21; D054377:Chemokine CXCL12; D016692:Receptors, Antigen, T-Cell, gamma-delta; D054400:Receptors, CCR7; D019718:Receptors, CXCR4