线粒体DNA哈普洛组和SNP:多种癌症的风险因素,基于中国人群的跨瘤分析
Dongbo Chen1,2, Zeyu Yan2,3, Qing Yuan1,2
1Institute of Medical Research, Northwestern Polytechnical University, Xi'an, Shaanxi, P.R. China.
概括
特定的线粒体DNA (mtDNA) 变异,包括A组和某些线粒体单核酸多态 (mtSNP),与中国人群多种癌症类型的风险降低有关. 这一发现为早期癌症查提供了潜力.
科学领域:
- 遗传学 遗传学 是一个
- 在瘤学瘤学.
- 人口研究 人口研究
背景情况:
- 线粒体DNA (mtDNA) 的分组和单核酸多态性 (SNP) 与各种癌症风险有关.
- 之前的研究还没有确定特定的mtDNA单基组或线粒体SNP (mtSNP) 在多种癌症类型中的性效应.
研究的目的:
- 调查mtDNA的变异是否与对多种癌症的易感性有关.
- 为了确定特定的mtDNA单双组或mtSNP是否对不同类型的癌症表现出性作用.
主要方法:
- 对2,489名癌症患者 (结肠直肠,肝细胞,肺,卵巢,膀,乳腺,胰腺,细胞癌) 和来自中国北部的715名健康对照进行了跨瘤分析.
- 参与者对mtDNA变异进行了基因定型,并进行了统计分析,以评估与多种癌症风险的关联.
主要成果:
- 亚分组A的个体显示多种癌症的风险显著降低 (OR = 0.553,P = 0.003).
- 11个mtSNP与多种癌症有关,与高风险组相比,低风险组的发生率显著减少 (OR = 0.614,P < 0.001).
- 综合分析显示,亚分组A/M7和低风险组的个体的多重癌症风险明显降低 (OR = 0.195,P < 0.001),与癌症相关基因的表达减少.
结论:
- 特定的mtDNA单基和mtSNP与预测中国人群多重癌症倾向有关.
- 这些发现表明mtDNA变异可以作为中国人口早期癌症查的潜在生物标志物.
相关概念视频
01:05Single Nucleotide Polymorphisms-SNPs
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A single nucleotide polymorphism or SNP is a single nucleotide variation at a specific genomic position in a large population. It is the most prevalent type of sequence variation found in the human genome. Point mutations that occur in more than 1% of the population qualify as SNPs. These are present once every 1000 nucleotides on an average in the human genome. Replacement of a purine with another purine (A/G) or a pyrimidine with another pyrimidine (C/T) is known as a transition. In contrast,...
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02:26Comparing Copy Number Variations and SNPs
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