传统和非传统的抗原结合部位促进慢性淋巴细胞白血病的发展和功能刻板印象的子集#4克隆
Yun Liu1,2, Dzmitry Padhorny3,4, Rosa Catera1,2
1Northwell, New Hyde Park, NY, United States.
Frontiers in immunology
|September 8, 2025
概括
慢性淋巴细胞白血病 (CLL) B细胞产生独特的免疫球蛋白 (IGs),这些免疫球蛋白与自身结合,形成一种新型的受体. 这种自我结合,而不是传统的域,调解与外来和自我抗原的相互作用,如流感病毒.
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:
- 慢性淋巴细胞白血病 (CLL) B细胞产生免疫球蛋白 (IGs),这些免疫球蛋白表现出自我homo-dimerization.
- IG同位分离的功能后果取决于结合亲和力.
- 从CLL亚组 (亚组#4) 的高亲和性同型二元化IGs之前已经被证明可以结合可活性淋巴细胞.
研究的目的:
- 调查来自CLL子集#4的高亲和性同型二元化IGs的抗原结合特性.
- 为了确定抗原结合是否由传统的B细胞受体 (BCR) 域介导,或由IG homo-dimerization形成的新型受体.
- 模拟这些独特的B细胞的发育路径.
主要方法:
- 探测了一系列超过8,000个抗原的IG结合.
- 评估废除IG同位分离对抗原结合的影响.
- 模拟从天真B细胞到白血病细胞的发育过渡.
主要成果:
- 来自CLL亚组#4的高亲和性homo-dimerizingIGs与流感病毒及其血液凝聚素结合.
- 取消IG的同型二元化取消了对流感病毒和可活性淋巴细胞的结合.
- 新型的homo-dimerized IG结构,而不是传统的BCR域,调解了抗原识别.
结论:
- IG同位二元化在CLL亚组#4中产生一种非传统的抗原受体.
- 这种同质二次受体能够识别外来 (流感) 和自身 (淋巴细胞) 抗原.
- 一个发育模型表明,在白血病过渡期间,天真的B细胞获得了同型二分化能力.
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