PMID- 21854084 OWN - NLM STAT- MEDLINE DCOM- 20120525 LR - 20211020 IS - 1029-2403 (Electronic) IS - 1042-8194 (Print) IS - 1026-8022 (Linking) VI - 53 IP - 2 DP - 2012 Feb TI - Mechanisms regulating enhanced human leukocyte antigen class II-mediated CD4 + T cell recognition of human B-cell lymphoma by resveratrol. PG - 305-14 LID - 10.3109/10428194.2011.615423 [doi] AB - Malignant B-cells express measurable levels of human leukocyte antigen (HLA) class II proteins, but often escape immune recognition by CD4 + T cells. Resveratrol (Resv) has been the focus of numerous investigations due to its potential chemopreventive and anti-cancer effects, but it has never been tested in the regulation of immune components in B-cell tumors. Here, we show for the first time that Resv treatment enhances HLA class II-mediated immune detection of B-cell lymphomas by altering immune components and class II presentation in tumor cells. Resv treatment induced an up-regulation of both classical and non-classical HLA class II proteins (DR and DM) in B-lymphoma cells. Resv also altered endolysosomal cathepsins (Cat S, B and D) and a thiol reductase (GILT), increasing HLA class II-mediated antigen (Ag) processing in B-cell lymphomas and their subsequent recognition by CD4 + T cells. Mechanistic study demonstrated that Resv treatment activated the recycling class II pathway of Ag presentation through up-regulation of Rab 4B protein expression in B-lymphoma cells. These findings suggest that HLA class II-mediated immune recognition of malignant B-cells can be improved by Resv treatment, thus encouraging its potential use in chemoimmunotherapy of B-cell lymphoma. FAU - Radwan, Faisal F Y AU - Radwan FF AD - Department of Microbiology and Immunology, Hollings Cancer Center and Children's Research Institute, Medical University of South Carolina, Charleston, SC 29425, USA. FAU - Zhang, Lixia AU - Zhang L FAU - Hossain, Azim AU - Hossain A FAU - Doonan, Bently P AU - Doonan BP FAU - God, Jason M AU - God JM FAU - Haque, Azizul AU - Haque A LA - eng GR - P30 CA138313/CA/NCI NIH HHS/United States GR - R01 CA129560/CA/NCI NIH HHS/United States GR - CA129560/CA/NCI NIH HHS/United States GR - CA129560-S1/CA/NCI NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural DEP - 20111024 PL - United States TA - Leuk Lymphoma JT - Leukemia & lymphoma JID - 9007422 RN - 0 (Antineoplastic Agents, Phytogenic) RN - 0 (HLA-D Antigens) RN - 0 (Stilbenes) RN - EC 3.4.- (Cathepsins) RN - Q369O8926L (Resveratrol) SB - IM MH - Antigen Presentation MH - Antineoplastic Agents, Phytogenic/*pharmacology MH - Blotting, Western MH - CD4-Positive T-Lymphocytes/*immunology MH - Cathepsins/metabolism MH - Cell Proliferation MH - Endocytosis MH - Flow Cytometry MH - HLA-D Antigens/immunology/*metabolism MH - Humans MH - Lymphoma, B-Cell/*drug therapy/*immunology/metabolism MH - Resveratrol MH - Stilbenes/*pharmacology MH - Tumor Cells, Cultured PMC - PMC4287222 MID - NIHMS439627 COIS- Conflicts of Interest The authors have no financial conflicts of interest. EDAT- 2011/08/23 06:00 MHDA- 2012/05/26 06:00 PMCR- 2015/01/08 CRDT- 2011/08/23 06:00 PHST- 2011/08/23 06:00 [entrez] PHST- 2011/08/23 06:00 [pubmed] PHST- 2012/05/26 06:00 [medline] PHST- 2015/01/08 00:00 [pmc-release] AID - 10.3109/10428194.2011.615423 [doi] PST - ppublish SO - Leuk Lymphoma. 2012 Feb;53(2):305-14. doi: 10.3109/10428194.2011.615423. Epub 2011 Oct 24.