在儿童B细胞急性淋巴细胞白血病中,VISTA是免疫治疗的潜在标
Nourhan K Mohamed1,2, Mohamed A El-Mokhtar3, Asmaa M Zahran4
1Department of Microbiology and Immunology, Faculty of Pharmacy, Minia University, Minia, 61519, Egypt.
Scientific reports
|July 3, 2025
概括
维斯塔在B细胞急性淋巴细胞白血病 (B-ALL) 中过度表达,有助于免疫逃避. 准VISTA和相关免疫标志物可能提供新的B-ALL免疫疗法策略.
科学领域:
- 免疫学 免疫学 免疫学
- 在瘤学瘤学.
- 血液学 血液学 血液学
背景情况:
- 免疫检查点调节癌症中的免疫反应.
- VISTA (T细胞激活的V域Ig抑制剂) 是一种已知的抑制T细胞的免疫检查点.
- 它在B细胞急性淋巴细胞白血病 (B-ALL) 中的作用尚不清楚.
研究的目的:
- 在儿童B-ALL患者中研究VISTA,CD244,CD48,FOXD3和PVRL2的表达.
- 探索VISTA作为B-ALL中的生物标志物和治疗点的潜力.
主要方法:
- 流细胞计用于分析儿科B-ALL患者的外周血液样本.
- 实时PCR被用于评估FOXD3和PVRL2基因表达.
主要成果:
- 在B-ALL爆炸中,VISTA过度表达.
- 观察到CD3+CD8+VISTA+细胞毒性T细胞的增加和CD3+CD4+VISTA+T辅助细胞的减少.
- 在完全缓解的患者中,CD19+VISTA+细胞的频率更高.
- FOXD3的下调,与VISTA的过度表达相关.
- 改变CD48和PVRL2的表达表明免疫逃避机制.
结论:
- 维斯塔的过度表达和FOXD3降低调节与B-ALL免疫逃避有关.
- 改变的CD48和PVRL2表达进一步导致免疫抑制.
- 维斯塔为B-ALL免疫疗法提供了潜在的生物标志物和治疗标.
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