title: Anti-CD27 Antibody Potentiates Antitumor Effect of Dendritic Cell-Based Vaccine in Prostate Cancer-Bearing Mice.
abstract: In the current study, we investigated whether anti-CD27 monoclonal antibody can enhance the antitumor efficacy of a dendritic cell-based vaccine in prostate cancer-bearing mice. The overall therapeutic effect of a dendritic cell-based vaccine for prostate cancer remains moderate. A prostate cancer model was established by subcutaneous injection of RM-1 tumor cells into male C57BL/6 mice on day 0. After 4 days, tumor-bearing mice were treated with RM-1 tumor lysate-pulsed dendritic cells (i.e., dendritic cell-based vaccine), anti-CD27 monoclonal antibody, or a combination of RM-1 tumor lysate-pulsed dendritic cells with anti-CD27 monoclonal antibody. Mice were killed at 21 days after tumor cell implantation. Tumor size was measured for assessment of antitumor effect. Spleens were collected for analysis of antitumor immune responses. The antitumor immune responses were evaluated by measuring the proliferation and activity of T cells, which have the ability to kill tumor cells. The combination therapy with RM-1 tumor lysate-pulsed dendritic cells and anti-CD27 antibody significantly enhanced T-cell proliferation and activity, and significantly reduced tumor growth, compared with monotherapy with RM-1 tumor lysate-pulsed dendritic cells or anti-CD27 antibody. Our results suggest that combined treatment can strengthen antitumor efficacy by improving T-cell proliferation and activity.
authors.affiliation: 1 Department of Surgery, Zhejiang Medical College, Hangzhou City, China.
authors.forename: Si-Ming
authors.initials: SM
authors.lastname: Wei
authors.forename: Jin-Xuan
authors.initials: JX
authors.lastname: Fei
authors.forename: Feng
authors.initials: F
authors.lastname: Tao
authors.forename: Hang-Li
authors.initials: HL
authors.lastname: Pan
authors.forename: Qing
authors.initials: Q
authors.lastname: Shen
authors.forename: Li
authors.initials: L
authors.lastname: Wang
authors.forename: Yu-Jia
authors.initials: YJ
authors.lastname: Wu
authors.forename: Li
authors.initials: L
authors.lastname: Zhou
authors.forename: Sheng-Xin
authors.initials: SX
authors.lastname: Zhu
authors.forename: Wei-Bin
authors.initials: WB
authors.lastname: Liao
authors.forename: Hua
authors.initials: H
authors.lastname: Ji
authors.forename: Zhao-Liang
authors.initials: ZL
authors.lastname: Xin
mesh_terms: D000818:Animals; D000911:Antibodies, Monoclonal / Q000627:therapeutic use*; D019496:Cancer Vaccines / Q000276:immunology / Q000627:therapeutic use*; D045744:Cell Line, Tumor; D003131:Combined Modality Therapy; D003713:Dendritic Cells / Q000276:immunology*; D008297:Male; D051379:Mice; D008810:Mice, Inbred C57BL; D009368:Neoplasm Transplantation; D011471:Prostatic Neoplasms / Q000188:drug therapy / Q000276:immunology / Q000517:prevention & control*; D011897:Random Allocation; D016896:Treatment Outcome; D018127:Tumor Necrosis Factor Receptor Superfamily, Member 7 / Q000276:immunology*
chemical_list: D000911:Antibodies, Monoclonal; D019496:Cancer Vaccines; D018127:Tumor Necrosis Factor Receptor Superfamily, Member 7
keywords: Anti-CD27 antibody; Dendritic cell vaccine; Mouse tumor model; Prostate cancer