PMID- 20549316 OWN - NLM STAT- MEDLINE DCOM- 20110315 LR - 20211020 IS - 1573-2592 (Electronic) IS - 0271-9142 (Linking) VI - 30 IP - 5 DP - 2010 Sep TI - Coculturing dendritic cells with zoledronate acid efficiently enhance the anti-tumor effects of cytokine-induced killer cells. PG - 766-74 LID - 10.1007/s10875-010-9434-1 [doi] AB - INTRODUCTION: Dendritic cells (DCs) have greater stimulating activity on innate and adaptive immunity following short-term sensitization with zoledronate acid (DCs(Zol)). We identified the phenotype, cytotoxicity, and mechanisms of killing of cytokine-induced killer (CIK) cells which were cocultured with DCs(Zol). METHODS: Adherent and nonadherent cells of peripheral blood mononuclear cell from myeloma patients were incubated for DCs and CIK cells. Then, the CIK cells were cocultured with DCs(Zol) (DCs(Zol)-CIK). Expression of markers for DCs(Zol)-CIK cells was measured using flow cytometry. Cytotoxicity was evaluated by against human myeloma cell lines and mechanisms of killing were tested by selectively blocking NKG2D receptor. The anti-tumor activity of these effector cells was further evaluated using a nude mice tumor model. RESULTS: gammadelta TCR expression of CIK cells significantly increased after coculture with immature or mature DCs(Zol) (iDCs/mDCs(Zol)-CIK) and these cells aggressively lysed myeloma cells compared with mDCs-CIK and zoledronate acid pulsed CIK cells (CIK(Zol); 50.8 +/- 7.9% and 48.2 +/- 4.7% versus 31.9 +/- 5.1% and 20.5 +/- 3.6%, effector versus target ratio was 60:1). Both alphabeta T and gammadelta T cells in the iDCs(Zol)-CIK cells performed the majority of lysis. The iDCs/mDCs(Zol)-CIK cells greatly increased NKG2D expression compared with mDCs-CIK and CIK(Zol) during culture (71.5 +/- 11.3% and 67.7 +/- 9.3% versus 51.3 +/- 6.2% and 47.1 +/- 5.7%). iDCs(Zol)-CIK cell-mediated lysis dropped 69.21% when the NKG2D receptor was blocked and the cytotoxicity correlated with NKG2D ligand-MICA expression on the target cells. In a human myeloma bearing nude mice model, iDCs(Zol)-CIK and mDCs(Zol)-CIK cells treatment groups obtained 75% and 62.5% long-term survival (>120 days) respectively, as compared with none of the control animals or 37.5% treated with mDCs-CIK cells. CONCLUSION: Large numbers of CIK cells with greater anti-tumor activities are rapidly generated by Zol-treated iDCs/mDCs. This strategy is worthy of further investigation to improve adoptive cell therapy against tumors. FAU - Su, Xiaosan AU - Su X AD - Biomedical Research Center, The First Hospital of Kunming, Kunming 650011, People's Republic of China. suxs163@163.com FAU - Zhang, Lei AU - Zhang L FAU - Jin, Liangkun AU - Jin L FAU - Ye, Junsong AU - Ye J FAU - Guan, Zheng AU - Guan Z FAU - Chen, Rui AU - Chen R LA - eng PT - Journal Article DEP - 20100615 PL - Netherlands TA - J Clin Immunol JT - Journal of clinical immunology JID - 8102137 RN - 0 (Diphosphonates) RN - 0 (Imidazoles) RN - 0 (KLRK1 protein, human) RN - 0 (NK Cell Lectin-Like Receptor Subfamily K) RN - 6XC1PAD3KF (Zoledronic Acid) SB - IM MH - Animals MH - Cell Differentiation/drug effects MH - Cell Line, Tumor MH - Cell Proliferation/drug effects MH - Coculture Techniques MH - Cytokine-Induced Killer Cells/immunology/*metabolism/pathology MH - Cytotoxicity, Immunologic/drug effects MH - Dendritic Cells/*drug effects/immunology/metabolism/pathology MH - Diphosphonates/*pharmacology MH - Humans MH - Imidazoles/*pharmacology MH - Immunophenotyping MH - *Immunotherapy, Adoptive MH - Lymphocyte Activation/drug effects MH - Mice MH - Mice, Nude MH - NK Cell Lectin-Like Receptor Subfamily K/antagonists & inhibitors/metabolism MH - Neoplasm Transplantation MH - Neoplasms, Experimental/*immunology/pathology/therapy MH - Zoledronic Acid EDAT- 2010/06/16 06:00 MHDA- 2011/03/16 06:00 CRDT- 2010/06/16 06:00 PHST- 2010/04/06 00:00 [received] PHST- 2010/05/27 00:00 [accepted] PHST- 2010/06/16 06:00 [entrez] PHST- 2010/06/16 06:00 [pubmed] PHST- 2011/03/16 06:00 [medline] AID - 10.1007/s10875-010-9434-1 [doi] PST - ppublish SO - J Clin Immunol. 2010 Sep;30(5):766-74. doi: 10.1007/s10875-010-9434-1. Epub 2010 Jun 15.