整合性基因组学将LMO1确定为一种神经母细胞瘤原基因
Kai Wang1, Sharon J Diskin, Haitao Zhang
1The Center for Applied Genomics, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania 19104, USA.
Nature
|December 3, 2010
概括
在LMO1基因的遗传变异显著增加患神经母细胞瘤的风险,严重的儿童癌症. 这些遗传因素也会导致这种疾病.
科学领域:
- 遗传学 是一个遗传学.
- 在瘤学瘤学.
- 分子生物学分子生物学
背景情况:
- 神经母细胞瘤是儿童癌症死亡的重要原因之一.
- 识别遗传风险因素对于理解神经母细胞瘤的发展至关重要.
- 已知LMO1基因及其家族成员在癌症中的作用.
研究的目的:
- 使用全基因组关联研究 (GWAS) 识别神经母细胞瘤的遗传风险因素.
- 研究LMO1基因在神经母细胞瘤易感性和进展中的作用.
主要方法:
- 全基因组关联研究 (GWAS) 对2,251名神经母细胞瘤患者和6,097名对照进行.
- 在701个原发性神经母细胞瘤瘤中对全基因组DNA复制数变化的分析.
- 使用细胞系进行功能性研究,以评估LMO1在增殖和基因表达中的作用.
主要成果:
- 在LMO1变体 (rs110419) 和神经母细胞瘤风险 (P = 5.2 × 10−16) 之间发现了显著的关联.
- 在12.4%的瘤中发生LMO1位点重复,与晚期疾病和较差的存活率相关.
- 增加的LMO1表达与生殖线风险等位基因和体质拷贝数的增加有关,这表明一种功能获取机制.
结论:
- 常见的LMO1多态性与神经母细胞瘤易感性密切相关.
- LMO1的变化有助于恶性进展,并影响患者的存活率.
- 准LMO1可能为神经母细胞瘤提供治疗策略.
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