PMID- 19142972 OWN - NLM STAT- MEDLINE DCOM- 20090526 LR - 20090319 IS - 1096-9896 (Electronic) IS - 0022-3417 (Linking) VI - 217 IP - 5 DP - 2009 Apr TI - Induction of anti-tumour immunity by dendritic cells transduced with hTERT recombinant adenovirus in mice. PG - 685-92 LID - 10.1002/path.2493 [doi] AB - Dendritic cells (DCs) transfected with recombinant, replication-defective adenovirus (Ad) vectors encoding the human telomerase reverse transcriptase (hTERT) are potent inducers of cytotoxic T lymphocytes (CTLs) and anti-tumour immunity. However, previous studies have mostly been in vitro. In this study, we sought to determine whether DCs transfected with hTERT (DC/Ad-hTERT) could elicit a potent anti-tumour immunogenic response in vivo. We found that murine DCs transfected with recombinant adenovirus encoding the hTERT gene (DC/Ad-hTERT) induced hTERT-specific CTLs in vivo effectively, compared with Ad-LacZ-transduced DC (DC/Ad-LacZ) controls. These hTERT-specific CTLs lysed various tumour cell lines in an hTERT-specific and MHC-I molecule-restricted fashion. We also found that DC/Ad-hTERT could increase antigen-specific T-cell proliferation and augment the number of IFN-gamma secreting T-cells in mice. These data suggest that the DC/Ad-hTERT vaccine may induce anti-tumour immunity against tumour cells expressing hTERT in an MHC-I molecule-restricted fashion in vivo through the augmentation of the hTERT-specific CTL response. The DC/Ad-hTERT vaccine may thus be used as an efficient DC-based tumour vaccine in clinical applications. FAU - Chen, Ling AU - Chen L AD - Institute of Gastroenterology of PLA, Southwest Hospital, Third Military Medical University, Chongqing 400038, China. FAU - Tang, Xu-Dong AU - Tang XD FAU - Yu, Song-Tao AU - Yu ST FAU - Ai, Zhi-Hua AU - Ai ZH FAU - Fang, Dian-Chun AU - Fang DC FAU - Cai, Yong-Guo AU - Cai YG FAU - Luo, Yuan-Hui AU - Luo YH FAU - Liang, Guang-Ping AU - Liang GP FAU - Yang, Shi-Ming AU - Yang SM LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - J Pathol JT - The Journal of pathology JID - 0204634 RN - 0 (Cancer Vaccines) RN - 0 (HLA-A2 Antigen) RN - 82115-62-6 (Interferon-gamma) RN - EC 2.7.7.49 (TERT protein, human) RN - EC 2.7.7.49 (Telomerase) SB - IM MH - Adenoviridae/genetics MH - Animals MH - Cancer Vaccines/*immunology MH - Cytotoxicity, Immunologic/immunology MH - Dendritic Cells/*immunology/transplantation MH - Female MH - Genetic Vectors MH - HLA-A2 Antigen/metabolism MH - Immunophenotyping MH - Interferon-gamma/biosynthesis MH - Mice MH - Mice, Inbred C57BL MH - T-Lymphocytes, Cytotoxic/immunology MH - Telomerase/genetics/*immunology MH - Transduction, Genetic MH - Tumor Cells, Cultured EDAT- 2009/01/15 09:00 MHDA- 2009/05/27 09:00 CRDT- 2009/01/15 09:00 PHST- 2009/01/15 09:00 [entrez] PHST- 2009/01/15 09:00 [pubmed] PHST- 2009/05/27 09:00 [medline] AID - 10.1002/path.2493 [doi] PST - ppublish SO - J Pathol. 2009 Apr;217(5):685-92. doi: 10.1002/path.2493.