Nat Commun:免疫检查点评分系统提高胃癌预后评估准确性

2020-12-30 xiaozeng MedSci原创

近年来,越来越多肿瘤学研究将重点放在抗肿瘤免疫反应上,其可能成为癌症的免疫治疗的一大基本标志。尽管目前在免疫治疗方面已取得了显著进展,但仍有大量的患者无法从中受益,这可能与肿瘤的免疫抑制环境相关。

近年来,越来越多肿瘤学研究将重点放在抗肿瘤免疫反应上,其可能成为癌症的免疫治疗的一大基本标志。尽管目前在免疫治疗方面已取得了显著进展,但仍有大量的患者无法从中受益,这可能与肿瘤的免疫抑制环境相关。

肿瘤细胞上表达的免疫检查点在保护肿瘤细胞免受宿主免疫反应(尤其是局部免疫)的攻击中起着至关重要的作用。这种具有免疫抑制作用的肿瘤微环境可以帮助肿瘤逃避免疫识别,进而促进肿瘤的增殖、局部的发展以及全身性的扩散。


既往研究显示,肿瘤浸润性淋巴细胞(TILs)状态与预后营养指数(PNI)评分显著相关,PNI评分是营养状态和全身免疫能力的一项指标。PNI评分较高的患者相比于评分较低的患者在肿瘤组织中更有可能具有较强的淋巴细胞浸润性。然而,目前尚不清楚较高的PNI评分是否会对免疫抑制性肿瘤微环境的患者有益。

ISSGC的预后价值

免疫检查点是跨越不同癌症类型的极具价值的患者预后生物学标志物。然而,免疫检查点的多样性使得仅基于单个免疫检查点预测临床结果的准确性堪忧。因此,需要一个模型来集成多个免疫检查点。


在该研究中,研究人员采用LASSO方法(最小绝对收缩和选择算子方法)建立了基于6种免疫抑制配体(NECTIN2、CEACAM1、HMGB1、SIGLEC6、CD44和CD155)的综合免疫评分系统(ISSGC,以提高患者预后预测的准确性,并为胃癌(GC)的辅助化疗提供其他的疾病治疗策略。

PNI评分与ISSGC相关

结果显示,ISSGC是GC患者的独立预后因素和TNM分期的补充,可以提高患者预后预测的准确性。此外,其可以将预后较好的GC患者与预后营养指数较高的患者区分开来。此外,ISSGC还可以独立于患者的TNM分期、MSI状况和EBV状况,为GC患者选择有益的辅助化疗策略。


总而言之,该研究结果提供了一种通过分析免疫检查点的组合来研究局部免疫抑制的预后影响的方法。ISSGC与TNM分期的联用能够更好的提高预后的准确性。此外,ISSGC还辅助评估了化疗的益处。


原始出处:

Wang, JB., Li, P., Liu, XL. et al. An immune checkpoint score system for prognostic evaluation and adjuvant chemotherapy selection in gastric cancer. Nat Commun 11, 6352 (11 December 2020).

 

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    2021-09-21 liuli5079
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    2021-08-06 liye789132251
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    2021-03-08 黄昏晓Time

    如何精准选择免疫抑制剂对预后很关键#免疫治疗#

    0

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    2020-12-30 神盾医疗局局长Jack

    ISSGC与TNM分期的联用能够更好的提高预后的准确性。此外,ISSGC还辅助评估了化疗的益处。

    0

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