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在儿科急性白血病中,NKG2A区分具有抑制表型的自然杀手细胞

Aina Ulvmoen¹, Victor Greiff², Anne G Bechensteen¹

¹Department of Pediatrics, Oslo University Hospital, Sognsvannsveien 20, Oslo 0372, Norway.

Journal of leukocyte biology

|September 22, 2023

概括

儿科B细胞前体急性淋巴细胞白血病 (BCP-ALL) 患者的自然杀手 (NK) 细胞显示高NKG2A表达. 这表明NKG2A是BCP-ALL治疗的潜在治疗点.

科学领域:

免疫学免疫学免疫学
儿科瘤学儿科瘤学
细胞生物学细胞生物学

背景情况:

自然杀手 (NK) 细胞对于早期瘤免疫监测至关重要.
在血液癌症中,NK细胞经常表现出功能缺陷和受体谱系失调.
急性白血病是最常见的儿童癌症,需要对其免疫格局进行研究.

研究的目的:

在儿科B细胞前体急性淋巴细胞白血病 (BCP-ALL) 患者中进行NK细胞的比较表型分析.
在BCP-ALL中识别异常NK细胞表型,成熟和功能.
为了比较BCP-ALL患者的NK细胞与年龄匹配的儿科对照.

主要方法:

对NK细胞表型,成熟和功能进行多参数流细胞计分析.
从BCP-ALL患者的匹配骨髓和血液NK细胞在诊断时,治疗期间和治疗结束时进行分析.
与年龄相匹配的健康儿科对照对象进行比较.

主要成果:

在BCP-ALL患者中,NK细胞标志物表达显示出显著的个体间差异.
高NKG2A表达是区分BCP-ALL患者NK细胞与对照细胞的主要标志物.
在BCP-ALL患者的诊断时,原始CD57-NKG2ANK细胞在BCP-ALL患者中占主导地位.
在骨髓CXCR6+NK细胞中观察到DNAM-1表达失调,NKG2A表达和减少DNAM-1缺乏细胞的脱粒化.

结论:

升高的NKG2A表达定义了儿科BCP-ALL中的NK细胞表型.
NKG2A代表了BCP-ALL.的潜在治疗点.
了解BCP-ALL中NK细胞失调可以为新的治疗策略提供信息.

关键词:

在 BCP-ALL 中,在CXCR6中,CXCR6是CXCR6.在DNAM-1中使用DNAM-1.血液血液血液血液血液骨髓骨髓骨髓骨髓骨髓

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