Nat Chem Bio:癌症免疫疗法新突破

2018-09-28 佚名 细胞

身体的免疫系统是抵御疾病的有效武器,而免疫疗法则是目前治疗癌症和其他疾病的研究前沿。

身体的免疫系统是抵御疾病的有效武器,而免疫疗法则是目前治疗癌症和其他疾病的研究前沿。

最近,圣母大学的研究人员发现了与两种截然不同的肽抗原与一种T细胞受体(TCR)发生反应的具体特征,这为优化分子结构以开发免疫疗法提供了新的线索。

相关结果发表在最近一期的《Nature Chemical Biology》杂志上。

“我们发现T细胞受体可能比我们之前设想的更具交叉反应性”主要作者Timothy Riley说,他是Baker的前研究生助理,现在是创业公司Structured Immunity的联合创始人、科学官和负责人,这家公司通过Notre Dame的IDEA中心孵化,旨在降低早期免疫治疗的风险。

T细胞是白细胞的一种亚型,负责感知机体处于健康状态还是受到了感染,但他们经常忽视体内癌细胞的存在。在T细胞免疫疗法中,通过给癌细胞增加能够被机体免疫系统识别的受体分子,进而使得T细胞寻找并破坏特定的细胞。虽然这种治疗手段在某些情况下是有效的,但它往往会对健康细胞造成影响。因此,研究人员希望通过预测反应性并尽可能地降低非特异性反应。

在这一研究中,作者发现一种叫做DMF5的TCR分子能够与多种不同类型的肽段结合,。两种不同的肽抗原在与DMF5结合之后,刺激受体和诱导免疫应答方面具有同样的效果。 “只要结合发生,它的工作方式并不重要,”作者说到。

总之,虽然此前研究已经了解到TCR可以攻击健康细胞的事实,但这一研究充分解释了其中的原因。

原始出处:
Timothy P. Riley, Lance M. Hellman, Marvin H. Gee,et al.. T cell receptor cross-reactivity expanded by dramatic peptide–MHC adaptability. Nature Chemical Biology, 2018; 14 (10): 934 DOI: 10.1038/s41589-018-0130-4

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    2019-09-06 zxxiang
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    2019-05-10 liye789132251
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    2018-12-07 sunylz
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    2018-09-28 佳虎

    不知道真实如何

    0

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