人类免疫缺陷病毒损害了对瘤新皮质的免疫反应,而不会改变NSCLC中的突变概况
Baptiste Abbar1, Karim Labreche2, Jacques Cadranel3
1Centre d'Immunologie et des Maladies Infectieuses (CIMI-Paris), Institut national de la santé et de la recherche médicale (INSERM) U1135, CNRS ERL8255, Sorbonne Université, Paris, France; Department of Medical Oncology, Assistance Publique - Hôpitaux de Paris (AP-HP), Pitié-Salpêtrière Hospital, Institut Universitaire de Cancérologie, Sorbonne Université, Paris, France.
概括
艾滋病毒感染会损害非小细胞肺癌 (NSCLC) 患者的抗瘤免疫力. 尽管瘤形状相似,但艾滋病毒感染者 (PLWHIV) 显示T细胞反应减少,特别是对MHC I类新表位细胞,影响免疫治疗的有效性.
科学领域:
- 免疫学 免疫学 免疫学
- 在瘤学瘤学.
- 病毒学 病毒学
背景情况:
- 非小细胞肺癌 (NSCLC) 对携带人类免疫缺陷病毒 (PLWHIV) 的人来说是一个重大挑战,往往导致预后不佳.
- 导致这种差异的潜在免疫因素在很大程度上是未知的.
研究的目的:
- 为了比较艾滋病毒感染和没有感染的NSCLC患者之间的免疫基因组特征和抗瘤免疫反应.
- 研究艾滋病毒对瘤微环境中的新抗原识别和T细胞功能的影响.
主要方法:
- 27个NSCLC样本的前性比较 (15个PLWHIV,12个免疫合格对照).
- 综合分析使用全外体和RNA测序,生物信息学,ex vivo干扰素玛 (IFNγ) ImmunoSpot测定和细胞内细胞因子染色.
- 评估瘤突变负担,分子特征,瘤微环境和新位预测.
主要成果:
- 瘤突变负担,分子概况和预测的新表位在PLWHIV和免疫能力强患者 (ICs) 之间是相似的.
- 在PLWHIV中,T细胞的反应仅针对MHCII类受限制的新表位细胞,与ICs中平衡的反应不同.
- PLWHIV 显示T细胞功能受损,中性粒细胞比例较低,CD4 计数较低与缺乏新表位特异性反应之间的相关性.
结论:
- 艾滋病毒感染显著损害NSCLC患者的局部和全身抗瘤免疫反应,特别是针对MHC I类受限制的新表位.
- 这些发现凸显了针对非小细胞细胞癌的PLWHIV的量身定制免疫疗法 (例如针对MHC I类受限制新表位体的免疫疗法) 的关键需求.
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