荷瘤小鼠骨髓来源树突状细胞诱导的抗肿瘤作用

Antitumor Effects Induced by Dendritic Cells From Bone Marrow of Tumor-bearing Muring

目的:探讨能否从荷瘤小鼠骨髓细胞诱导出功能正常、具有抗肿瘤作用的树突状细胞(DC),与正常小鼠骨髓来源的DC比较有无差异。方法:于体外用mGM-CSF和mIL-4分别从正常小鼠和CT26结肠腺瘤小鼠的骨髓细胞诱导DC,并用CT26肿瘤细胞抗原冲击致敏。用相差显微镜观察DC的形态学变化;流式细胞术检测CT26肿瘤细胞抗原致敏前后DC表面分子变化;3H-TdR掺入法检测肿瘤抗原致敏DC刺激T细胞增殖的能力;乳酸脱氢酶(LDH)4 h释放法检测肿瘤抗原致敏DC诱导同基因T细胞增殖、分化为细胞毒性T细胞(CTL)的杀伤活性。结果:荷瘤小鼠骨髓来源DC与正常小鼠骨髓来源DC的Ia-Kd、H-2Kd、CD80、CD86I、CAM-1表达水平和它们刺激T细胞增殖的能力以及所诱导产生的CTL杀伤活性均无显著性差异。结论:荷瘤小鼠骨髓来源的DC与正常小鼠骨髓来源的DC具有相似的功能和抗肿瘤作用,提示可以从荷瘤机体的DC前体诱导出具有抗肿瘤作用的DC用于肿瘤的免疫治疗。

Objective To investigate whether the dendritic cells(DCs) from the bone marrow of tumor-bearing murine has the potent capacity of inducing antitumor effects.Methods DCs were induced from the normal and tumor-bearing murine bone marrow with mGM-CSF and mIL-4 in vitro respectively,then pulsed with murine B16 tumor cells antigen.Morphological characters of DC were observed by a phase contrast microscope;DC surface molecules were assayed by FACS;T cells proliferation was assayed by()~dH-TdR method and the killi...