【摘 要】
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Aim: To investigate the antitumor immunity by a dendritic cell (DC) vaccine encoding secondary lymphoid chemokine gene and tumor lysate on murine prostate cancer. Methods: DC from bone marrow of C57BL/6 were transfected with a plasmid vector expressing se
【机 构】
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Department of Urology,Shanghai Jiaotong University Affiliated First People’s Hospital,Shanghai 20008
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Aim: To investigate the antitumor immunity by a dendritic cell (DC) vaccine encoding secondary lymphoid chemokine gene and tumor lysate on murine prostate cancer. Methods: DC from bone marrow of C57BL/6 were transfected with a plasmid vector expressing secondary lymphoid chemokine (SLC) cDNA by Lipofectamine2000 liposome and tumor lysate. Total RNA extracted from SLC+lysate-DC was used to verify the expression of SLC by reverse transcriptase-polymerase chain reaction (RT-PCR). The immunotherapeutic effect of DC vaccine on murine prostate cancer was assessed. Results: We found that in the prostate tumor model of C57BL/6 mice, the adminstration of SLC+lysate-DC inhibited tumor growth most significantly when compared with SLC-DC, lysate-DC, DC or phos-phate buffer solution (PBS) counterparts (P<0.01). Immunohistochemical fluorescent staining analysis showed the infiltration of more CD4+, CD8+ T cell and CD11c+ DC within established tumor treated by SLC+lysate-DC vaccine than other DC vaccines (P<0.01). Conclusion: DC vaccine encoding secondary lymphoid chemokine and tumor lysate can elicit significant antitumor immunity by infiltration of CD4+, CD8+ T cell and DC, which might provide a potential immunotherapy method for prostate cancer.
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