PMID- 19689735 OWN - NLM STAT- MEDLINE DCOM- 20091104 LR - 20211020 IS - 1365-2567 (Electronic) IS - 0019-2805 (Print) IS - 0019-2805 (Linking) VI - 128 IP - 1 DP - 2009 Sep TI - Lentiviral calnexin-modified dendritic cells promote expansion of high-avidity effector T cells with central memory phenotype. PG - 43-57 LID - 10.1111/j.1365-2567.2009.03067.x [doi] AB - Dendritic cells (DCs) are key immune mediators for the education and activation of effector cytotoxic T lymphocytes (CTLs). Ex vivo manipulation of DCs is an attractive strategy in immunotherapy. The chaperone proteins are known to hold the keys to proper protein folding and antigen processing. However, little is known of the role of molecular chaperones in DC and T-cell functions. We report that DCs expressing supraphysiological levels of calnexin, a chaperone protein, via lentiviral gene transfer stimulated the expansion of high-avidity CTLs with increased central memory phenotype. Microarray RNA profiling and analyses of protein expression with flow cytometry and multiplex enzyme-linked immunosorbent assay indicated that calnexin had a global effect on DCs with up-regulation of immune modulatory signals including costimulatory molecules, cytokines, chemokines and adhesion molecules. Compared with unmodified DCs, calnexin-DCs were capable of activating T cells to exhibit increased functional avidity associated with up-regulation of CCR7 and costimulatory tumour necrosis factor receptor superfamily molecules. These findings demonstrate a prominent role of calnexin in optimizing DC immunity with potential for improving immunotherapy. FAU - Wang, Bei AU - Wang B AD - Department of Molecular Genetics and Microbiology, University of Florida, College of Medicine, Gainesville, FL, USA. FAU - Han, Shuhong AU - Han S FAU - Lien, Lily AU - Lien L FAU - Chang, Lung-Ji AU - Chang LJ LA - eng GR - P01 HL059412/HL/NHLBI NIH HHS/United States GR - P50 HL059412/HL/NHLBI NIH HHS/United States GR - HL59412/HL/NHLBI NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't PL - England TA - Immunology JT - Immunology JID - 0374672 RN - 0 (Cancer Vaccines) RN - 0 (Ccr7 protein, mouse) RN - 0 (Receptors, CCR7) RN - 139873-08-8 (Calnexin) SB - IM MH - Animals MH - Antibody Affinity MH - Antigen Presentation/immunology MH - Calnexin/*immunology MH - Cancer Vaccines/therapeutic use MH - Cell Proliferation MH - Coculture Techniques MH - Colonic Neoplasms/therapy MH - Dendritic Cells/*immunology/transplantation MH - Genetic Vectors MH - Immunologic Memory MH - Immunophenotyping MH - Lentivirus/genetics MH - Lymphocyte Activation/immunology MH - Mice MH - Mice, Inbred BALB C MH - Receptors, CCR7/metabolism MH - T-Lymphocytes, Cytotoxic/*immunology MH - Transduction, Genetic MH - Tumor Cells, Cultured PMC - PMC2747138 EDAT- 2009/08/20 09:00 MHDA- 2009/11/05 06:00 PMCR- 2010/09/01 CRDT- 2009/08/20 09:00 PHST- 2009/08/20 09:00 [entrez] PHST- 2009/08/20 09:00 [pubmed] PHST- 2009/11/05 06:00 [medline] PHST- 2010/09/01 00:00 [pmc-release] AID - IMM3067 [pii] AID - 10.1111/j.1365-2567.2009.03067.x [doi] PST - ppublish SO - Immunology. 2009 Sep;128(1):43-57. doi: 10.1111/j.1365-2567.2009.03067.x.