为肝细胞癌武装 GPC3 CAR-T 细胞:多少才足够,下一步是什么?
Armouring GPC3 CAR T cells for hepatocellular carcinoma: how much is enough and what comes next?
CELL INTELLIGENCE · 肿瘤细胞治疗研究
肿瘤细胞治疗研究
英文原题:GP96 and SMP30 Protein Priming of Dendritic Cell Vaccination Induces a More Potent CTL Response against Hepatoma.
GP96 and SMP30 Protein Priming of Dendritic Cell Vaccination Induces a More Potent CTL Response against Hepatoma.
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热休克蛋白(HSP)GP96 是免疫治疗中众所周知的佐剂。它属于 HSP90 家族。我们之前的研究表明,用重组衰老标志蛋白 30(SMP30)脉冲致敏的 DC 可在体外诱导针对肝癌细胞的细胞毒性 T 淋巴细胞(CTL)。
在本研究中,将 SMP30 和 GP96 亚克隆至慢病毒中,并转染来自健康供者的 DC。我们纳入了六组:GP96-SMP30 组、GP96 组、SMP30 组、DC 组、空载体对照组和肝癌提取蛋白组。
我们使用 ELISA 检测细胞因子,并使用流式细胞术评估 DC 上的 CD80 和 CD86 以及 CTL 的效果。我们的载体设计被认为是成功的,并进一步进行了研究。在 SMP30 组中,DC 表达的 CCR7 和 CD86 多于对照组;在 SMP30+GP96 组中,DC 表达的 CCR7、CD86 和 CD80 多于对照组。与对照 DC 相比,转染后的 DC 分泌更多的 TNF-α 和干扰素-β,并诱导更多的 CTL。与对照处理相比,SMP30 + GP96 有效刺激了 T 细胞的增殖(P < 0.01)。
我们通过 ELISA 检测了细胞因子 TNF-α、TNF-β、IL-12 和 IFN(α、β 和 γ)(图 5),并通过 FCM 验证了杀伤效果。测试了四种 E : T 比值(0 : 1、10 : 1、20 : 1 和 40 : 1)。比值越高,效果越好。
我们成功构建了肝癌模型,并检测了各组的 CTL 效果。GP96 + SMP30 组显示出优于其他组的效果。GP96 和 SMP30 可以共同刺激 DC,并产生更强的抗肿瘤效果。
我们的研究可能为提高 DC 疫苗在肝癌中的治疗效果提供一种新的高效途径。
Heat-shock protein (HSP) GP96 is a well-known adjuvant in immunotherapy. It belongs to the HSP90 family.
Our previous study demonstrated that DC pulsed with recombinant senescence marker protein 30 (SMP30) could induce cytotoxic T lymphocytes (CTLs) against liver cancer cells in vitro. In this study, SMP30 and GP96 were subcloned into lentiviruses and transfected into DCs from healthy donors.
We included six groups: the GP96-SMP30 group, GP96 group, SMP30 group, DC group, empty vector control group, and hepatoma extracted protein group.
We used ELISA to detect cytokines and flow cytometry to assess CD80 and CD86 on DCs and the effect of CTLs.
Our vector design was considered successful and further studied. In the SMP30 group, DC expresses more CCR7 and CD86 than the control group; in the SMP30+GP96 group, DC express more CCR7, CD86, and CD80 than the control group. Transfected DCs secreted more TNF- α and interferon- β and induced more CTLs than control DCs. SMP30 + GP96 effectively stimulated the proliferation of T cells compared with control treatment ( P < 0. 01).
We detected the cytokines TNF- α , TNF- β , IL-12, and IFN ( α , β , and γ ) via ELISA (Figure 5) and verified the killing effect via FCM. Four E : T ratios (0 : 1, 10 : 1, 20 : 1, and 40 : 1) were tested. The higher the ratio was, the better the effects were.
We successfully constructed a liver cancer model and tested the CTL effect in each group. The GP96 + SMP30 group showed a better effect than the other groups. GP96 and SMP30 can stimulate DCs together and produce more potent antitumor effects.
Our research may provide a new efficient way to improve the therapeutic effect of DC vaccines in liver cancer.
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