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Nat Commun:诱导T细胞识别多种癌症抗原,治疗胶质母细胞瘤的初步临床结果

2018-03-08 佚名 Nature自然科研

根据《自然-通讯》发表的初步临床结果Adoptive cancer immunotherapy using DNA-demethylated T helper cells as antigen-presenting cells,一种诱导培养T淋巴细胞(白细胞的一种)识别肿瘤细胞上的一系列标记产生的新方法或许可以用于胶质母细胞瘤(glioblastoma multiforme)的治疗。

根据《自然-通讯》发表的初步临床结果Adoptive cancer immunotherapy using DNA-demethylated T helper cells as antigen-presenting cells,一种诱导培养T淋巴细胞(白细胞的一种)识别肿瘤细胞上的一系列标记产生的新方法或许可以用于胶质母细胞瘤(glioblastoma multiforme)的治疗。



完全成熟的树突细胞诱导淋巴细胞增殖和TH细胞的富集。

免疫细胞(包括T淋巴细胞)过继转移——将白细胞转移到一个病人体内,已经在晚期癌症的临床试验中表现出积极的治疗效果。通过该过程对抗肿瘤的一个关键决定因素是T淋巴细胞识别出特异性癌症抗原。然而,许多研究报告不同抗原在表达上表现出极大差异,差异既出现在不同的肿瘤类型和阶段,也出现在同肿瘤之内。

为了靶向尽可能多的特异性癌症抗原,丹麦癌症学会研究中心的Alexei Kirkin及同事建立了一种基于人源T淋巴细胞过继转移的方法,对多种“个性化”抗原具有特异性。作者通过用一种特异药物——5-杂氮-2'-脱氧胞苷——处理人源细胞,来诱导培养T淋巴细胞的产生。他们还报告了对25名复发后胶质母细胞瘤患者的一期临床试验(仍在进行中)的部分初步结果。试验中,注入培养T细胞后,三名患者的肿瘤有所消退,且无副作用。



该疗法在患者3中的治疗反应。

基于这些结果,作者称该疗法或许可以被考虑用于治疗其他癌症。然而,该临床试验仍处于初期,只有当试验完成后才能全面讨论这种方法的潜力。

原始出处:
Alexei F. Kirkin, Karine N. Dzhandzhugazyan, Per Guldberg, et al. Adoptive cancer immunotherapy using DNA-demethylated T helper cells as antigen-presenting cells. Nature Communications. Mar 6, 2018.

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    2018-08-12 liuli5079
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研究结论:GS-9620的12周治疗对患者血清HBsAg水平无显著影响,但似乎增加了T细胞和NK细胞的反应,降低了NK抑制T细胞的能力。

Oncogenesis: 细胞外囊泡调控的EBAG9从癌细胞到肿瘤微环境中的转移可以促进免疫逃避和肿瘤恶化

抗肿瘤响应是一种关键的防御系统,可以消灭恶性肿瘤细胞。该防御系统的失败能够导致免疫逃避并且促进肿瘤生长。有研究人员之前报道了雌激素受体结合片段相关抗原(EBAG9)是一个相关的癌症生物标记,并且能够促进免疫监控下的癌症免疫逃避。在体内试验的癌症细胞中,EBAG9能够抑制T细胞渗透到肿瘤,然而EBAG9在宿主免疫细胞中作为一个T细胞细胞毒性限制因子。考虑到EBAG9在肿瘤和微环境中具有免疫抑制的作用

J Clin Invest:全新研究找到HIV“隐藏蓄水池”的秘密,或能将HIV一网打尽!

最近一项旨在消除艾滋病病毒的“踢杀”研究揭示了寻找治疗方法的潜在障碍。乔治华盛顿大学的研究人员最近的一项研究发现,潜伏的HIV蓄水池对CD8 T细胞有抵抗力,CD8 T细胞是一种白细胞,其主要功能是杀死受感染的细胞。

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