Objective To investigate the antitumor functions of dendritic cells ( DCs ) pulsed with various types of breast cancer cell lysate antigens. Methods Purified breast cancer cells ( group A ) and breast cancer tissues ( group B ) from patients underwent breast cancer surgery in the surgical oncology of Inner Mongolia Autonomous Region Hospital, and breast cancer cell line SKBR - 3 ( group C ) purchased from Peking Union Medical College were involved into the study. Tumor lysate antigens were prepared and DC vaccines were obtained. The surface molecule expression of DCs and function were tested by flow cytometer and the T lymphocyte proliferation test. Results After seven days inducement, the CD80, CD83 , CD86 and HLA - DR between the three groups' DC showed statistically significant differences ( P <0. 05 ) . Compared with group B, the group A and group C both showed statistically significant differences ( P < 0. 05 ) . The group A and group C showed no statistically significant difference ( P > 0. 05 ) .The CPM value of group A ( 13 047 ± 215 ), group B ( 4 964 ± 148 ) and group C ( 5 082 ± 176 ) showed statistically significant differences ( F = 5 200. 7159, P =0. 0000 ) . Compared with group A, the group B and group C both showed statistically significant differences ( q = 125. 8166, 123. 9803 , P <0. 01 ) . The group B and group C showed no statistically significant difference ( q = 1. 8363 , P > 0. 05 ) . Conclusion DCs pulsed with purified autologous tumor cell lysate antigens can mediate remarkable immune response of T lymphocyte.%目的 探讨不同乳腺癌细胞冻融抗原负载树突细胞(DC)的抑瘤功能.方法 选取我院肿瘤外科乳腺癌手术患者纯化培养的乳腺癌细胞(A组)、乳腺癌组织(B组),购自北京协和医科大学的乳腺癌细胞株SKBR-3(C组).分别制备冻融抗原,负载自体DC获得DC疫苗,以流式细胞仪和T淋巴细胞增殖实验检测DC表型及功能.结果 诱导7 d后,3组DC的CD80、CD83、CD86和HLA-DR比较,差异均有统计学意义(P＜0.05);其中A组和C组较B组均升高,差异有统计学意义(P＜0.05);A组与C组比较,差异均无统计学意义(P＞0.05).A组CPM值(13 047±215),B组(4 964±148),C组(5 082±176),3组比较差异有统计学意义(F=5 200.7159,P=0.0000);其中A组较B组和C组均升高,差异有统计学意义(q值分别为125.8166和123.9803,P＜0.01);B组与C组比较,差异无统计学意义(q=1.8363,P＞0.05).结论 纯化的自体肿瘤细胞冻融抗原体外致敏DC,可介导显著的T细胞免疫反应,从而起到抑瘤功能.
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