1083-基于CRISPRa筛选的癌症糖组重塑基因图谱 episode artwork

EPISODE · Jun 5, 2026 · 18 MIN

1083-基于CRISPRa筛选的癌症糖组重塑基因图谱

from 聊聊Sci

这项研究通过全基因组CRISPR激活(CRISPRa)筛选技术,系统性地描绘了癌症如何重塑其细胞表面的糖组以逃避免疫系统。研究人员发现,癌细胞通过特定的糖基转移酶(如ST3GAL家族)与分支酶之间的遗传竞争,上调了能够结合免疫抑制性Siglec受体的糖链表达。实验不仅识别出CD44和CSPG4是Siglec-9的新型“专业配体”,还纠正了CD24并非Siglec-10唯一必需配体的传统认知。此外,该研究重点揭示了GAL3ST4硫酸转移酶是神经胶质瘤免疫逃逸的关键驱动因素,其高表达与患者的不良预后高度相关。这套基因组图谱为开发下一代癌症免疫疗法提供了大量潜在的精准药物靶点。References:Daly J, Piatnitca L, Al-Seragi M, et al. CRISPR activation screens map the genomic landscape of cancer glycome remodeling[J]. Cell Genomics, 2026, 6(4).前往小宇宙评论区与主播互动

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1083-基于CRISPRa筛选的癌症糖组重塑基因图谱

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