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综合单细胞和空间转录组学与全外体测序相结合,揭示了膀癌中关键的枢纽基因和上皮异质性
Lin Li1,2, Qianyue Li2, Jiaxin Liu1
1Department of Medical College, Shihezi University, Shihezi, Xinjiang, China.
Frontiers in oncology
|February 11, 2026
概括
这项研究确定了膀癌 (BLCA) 中的关键上皮细胞亚型,并发现ABRACL和ARPC3 是与瘤突变负担 (TMB) 相关的关键基因. 这些发现为改善BLCA诊断和治疗提供了潜力.
科学领域:
- 在瘤学瘤学.
- 基因组学就是基因组学.
- 生物信息学是一种生物信息学.
背景情况:
- 膀癌 (BLCA) 是一种具有复杂瘤微环境的异质恶性瘤.
- 了解上皮细胞 (EpiC) 多样性对于推进BLCA诊断和治疗至关重要.
研究的目的:
- 在BLCA中使用多omics数据全面表征上皮细胞亚型.
- 在BLCA上皮细胞中识别与瘤突变负担 (TMB) 相关的关键基因.
- 开发一种风险评分模型,用于BLCA的潜在临床应用.
主要方法:
- 集成的单细胞RNA-seq,批量转录基因组和整个外基因组测序数据.
- 采用非线性维度缩小 (UMAP) 和细胞子集识别的聚类.
- 利用Ro/e算法来识别TMB相关的上皮子集和随机生存森林 (RSF) 以发现枢纽基因.
主要成果:
- 确定了32个细胞群,Epi14被证实是关键的TMB相关的上皮细胞子集.
- 发现ABRACL和ARPC3作为关键的枢纽基因,ABRACL与瘤TMB正相关.
- 基于已识别的枢纽基因构建了一个风险评分模型,并使用空间转录组学验证了这些发现.
结论:
- 通过多omics和空间数据集成,揭示了BLCA显著的上皮异质性.
- 在BLCA上皮细胞中确定ABRACL和ARPC3作为关键的TMB相关的枢纽基因.
- 开发的风险评分模型和验证的标记器为未来的BLCA研究和临床转化提供了潜力.
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