Sex differences in the human peripheral blood transcriptome.

Sex differences in the human peripheral blood transcriptome.
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DOI:
10.1186/1471-2164-15-33
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发表时间:
2014-01-17
期刊:
影响因子:
4.4
通讯作者:
Penninx BW
Penninx BW
中科院分区:
生物学2区
文献类型:
--
作者:
Jansen R;Batista S;Brooks AI;Tischfield JA;Willemsen G;van Grootheest G;Hottenga JJ;Milaneschi Y;Mbarek H;Madar V;Peyrot W;Vink JM;Verweij CL;de Geus EJ;Smit JH;Wright FA;Sullivan PF;Boomsma DI;Penninx BW

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男性和女性的基因组只在位于性染色体上的有限数量的基因上有所不同,而转录组则更具性别特异性。性别偏倚基因表达的鉴定将有助于理解复杂性状和常见疾病中性别差异的分子基础。利用微阵列技术对5241名受试者外周血转录组的性别差异进行了表征,包括绝经状态和激素避孕药的使用情况。在582个常染色体基因中观察到性别特异性表达,其中57.7%在女性中上调(女性偏倚基因)。女性偏向基因在几种免疫系统氧化石墨烯类别、与类风湿关节炎相关的基因(16%)和受雌激素调节的基因(18%)中富集。男性偏倚基因中与肾癌相关的基因富集(9%)。基因表达的性别差异在绝经后妇女中较小,在使用激素避孕药的妇女中较大,并且不是由性别特异性的eqtl引起的,证实了雌激素在调节性别偏向基因中的作用。这项研究表明,基因表达的性别偏见是广泛的,可能是常见疾病患病率的性别差异的基础。
Genomes of men and women differ in only a limited number of genes located on the sex chromosomes, whereas the transcriptome is far more sex-specific. Identification of sex-biased gene expression will contribute to understanding the molecular basis of sex-differences in complex traits and common diseases. Sex differences in the human peripheral blood transcriptome were characterized using microarrays in 5,241 subjects, accounting for menopause status and hormonal contraceptive use. Sex-specific expression was observed for 582 autosomal genes, of which 57.7% was upregulated in women (female-biased genes). Female-biased genes were enriched for several immune system GO categories, genes linked to rheumatoid arthritis (16%) and genes regulated by estrogen (18%). Male-biased genes were enriched for genes linked to renal cancer (9%). Sex-differences in gene expression were smaller in postmenopausal women, larger in women using hormonal contraceptives and not caused by sex-specific eQTLs, confirming the role of estrogen in regulating sex-biased genes. This study indicates that sex-bias in gene expression is extensive and may underlie sex-differences in the prevalence of common diseases.
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