AKT抑制剂对结直肠癌肝转移患者肿瘤浸润T淋巴细胞生物学活性的影响

摘要

目的 探讨AKT抑制剂对结直肠癌肝转移肿瘤浸润T淋巴细胞生物学活性的影响.方法 收集郑州大学附属肿瘤医院普外科2016年1-12月间收治的可手术的结直肠癌肝转移患者的肿瘤组织,密度梯度离心法分离获得组织中的淋巴细胞和肿瘤细胞,采用流式细胞学方法检测AKT抑制剂对肿瘤浸润T淋巴细胞增殖,分化,细胞表型及功能的影响.结果 AKT抑制剂组能增加中心记忆T淋巴细胞的比例而不影响肝转移癌浸润T淋巴细胞的增殖,自体肿瘤细胞刺激诱导出的分泌IFN-γ的T细胞比例明显高于IL-2组.结论 在TIL培养体系中加入AKT抑制剂可以增强中心记忆T淋巴细胞的增殖及功能,而不影响CD8+T细胞的数量,这对于肿瘤过继免疫治疗方案的改进具有重要的参考意义.%Objective To explore the influence of AKT inhibitors on tumor infiltrating T lymphocytes (TIL)in patients with liver metastasis of colorectal cancer.Methods The tumor tissues from the patients with liv-er metastasis of colorectal cancer in Department of General Surgery,The Affiliated Cancer Hospital of Zhengzhou University from January 2016 to December 2016 were collected.TIL and tumor cells were isolated by percoll densi-ty gradient centrifugation. The profiling of AKT inhibitors on TIL were analyzed by flow cytometry. Results AKT inhibition enhances the expansion of TIL with memory cell without affects its proliferation,also the cells obtained under AKT inhibitor with IL-2 showed higher frequency of IFN-γproducing cells than IL-2. Conclusion Add AKT inhibitors in TIL cultivation system can strengthen the proliferation of central memory T cells,and does not affect the number of CD8+T cells.This might be developed for cell-based immunotherapy of cancer.