title: Expansion of Vdelta1 T lymphocytes producing IL-4 in low-grade non-Hodgkin lymphomas expressing UL-16-binding proteins.
abstract: Data on 23 patients with low-grade non-Hodgkin lymphomas (NHLs), 4 mantle (MT), 4 marginal zone (MZ), and 15 follicular (FL), were analyzed and compared with 10 high-risk (HR) B-cell chronic lymphocytic leukemias (B-CLLs) with lymph node involvement and 4 diffuse large-cell lymphomas (DLCLs). A significant increase in circulating Vdelta1 T lymphocytes producing interleukin-4 (IL-4) was found in patients with FL, MT, and MZ NHL, at variance with DLCL and HR B-CLL. IL-4 was also detectable in the sera and lymph nodes of the same patients. In 19 of the 23 patients with NHL with increased circulating Vdelta1 T lymphocytes, B cells expressing the UL-16-binding proteins (ULBPs) ULBP2 or ULBP3 or both were found in peripheral blood, bone marrow, or lymph nodes. Of note, in HR B-CLL or in DLCL, where leukemic cells were negative for ULBPs, no Vdelta1 T-cell increase was found. Moreover, Vdelta1 T lymphocytes from patients with FL NHL proliferate in response to ULBP2+ and ULBP3+ lymphoma cells. Finally, patients with high expression of ULBPs, increased circulating Vdelta1 T lymphocytes, and high levels of serum IL-4 showed stable disease in a 1-year follow-up in contrast to patients with low circulating Vdelta1 T cells and undetectable IL-4 or ULBPs.
authors.affiliation: Laboratory of Hematology, University of Genoa, Genoa, Italy.
authors.forename: Silvia
authors.initials: S
authors.lastname: Catellani
authors.forename: Alessandro
authors.initials: A
authors.lastname: Poggi
authors.forename: Andrea
authors.initials: A
authors.lastname: Bruzzone
authors.forename: Patrizia
authors.initials: P
authors.lastname: Dadati
authors.forename: Jean Louis
authors.initials: JL
authors.lastname: Ravetti
authors.forename: Marco
authors.initials: M
authors.lastname: Gobbi
authors.forename: Maria Raffaella
authors.initials: MR
authors.lastname: Zocchi
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002352:Carrier Proteins / Q000235:genetics / Q000378:metabolism*; D049109:Cell Proliferation; D002478:Cells, Cultured; D018450:Disease Progression; D005260:Female; D005500:Follow-Up Studies; D058851:GPI-Linked Proteins; D015395:Histocompatibility Antigens Class I / Q000235:genetics / Q000378:metabolism*; D006801:Humans; D007138:Immunoglobulin delta-Chains / Q000378:metabolism*; D036341:Intercellular Signaling Peptides and Proteins; D015847:Interleukin-4 / Q000096:biosynthesis*; D008228:Lymphoma, Non-Hodgkin / Q000145:classification / Q000235:genetics / Q000378:metabolism* / Q000473:pathology*; D008297:Male; D008875:Middle Aged; D009367:Neoplasm Staging; D011485:Protein Binding; D013601:T-Lymphocytes / Q000166:cytology / Q000378:metabolism*; D014158:Transcription, Genetic / Q000235:genetics
chemical_list: D002352:Carrier Proteins; D058851:GPI-Linked Proteins; D015395:Histocompatibility Antigens Class I; D007138:Immunoglobulin delta-Chains; D036341:Intercellular Signaling Peptides and Proteins; C423230:ULBP2 protein, human; C423229:ULBP3 protein, human; D015847:Interleukin-4