GUT: NKp46可能成为胃肠道T细胞淋巴增生性疾病的治疗靶点

2018-11-19 MedSci MedSci原创

原发性胃肠道T细胞淋巴增生性疾病(T-LPD)一种难以诊断及治疗的遗传性疾病。最近有研究证据表明,淋巴瘤并发乳糜泻(CD)是由先天性淋巴细胞变异引起的,这种淋巴细胞可能携带NK受体(NKRs)。因此本项研究旨在探究它们之间的联系。

背景及目的 
原发性肠道T细胞淋巴增生性疾病(T-LPD)一种难以诊断及治疗的遗传性疾病。最近有研究证据表明,淋巴瘤并发乳糜泻(CD)是由先天性淋巴细胞变异引起的,这种淋巴细胞可能携带NK受体(NKRs)。因此本项研究旨在探究它们之间的联系。

方法 
研究人员通过流式细胞术比较来自CD,I型或II型难治性CD(RCD)的上皮内淋巴细胞(IEL)中NKRs的表达差异。研究人员募集了204名患有CD,RCDI,RCDII或GI T细胞淋巴瘤的患者并对他们进行肠道组织活检并进行石蜡包埋,同时招募了61名患者的健康队列,对他们进行免疫组织化学检查评估NKp46水平。

结果
本项研究显示NKp46在恶性RCDII IEL中的表达明显高于CD和RCDI中的正常IEL的表达。在肠病相关T细胞淋巴瘤(EATL,24/29)和单形上皮细胞性肠T细胞淋巴瘤(MEITL,4/4)中也检测到NKp46的高表达,但在惰性T-LPD(0/15)中未检测到NKp46的异常表达。用抗-NKp46-PBD处理可以有效地和选择性地杀死人NKp46高表达的淋巴细胞。

结论
NKp46是一种新型生物标志物,可用于肠道T-LPD的诊断和治疗。

原始出处:

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