BackgroundGenomes 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.ResultsSex 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.ConclusionsThis study indicates that sex-bias in gene expression is extensive and may underlie sex-differences in the prevalence of common diseases.
Sex differences in the human peripheral blood transcriptome
R. Jansen,Sandra Batista,Andy Brooks,J. Tischfield,G. Willemsen,Gerard van Grootheest,J. Hottenga,Y. Milaneschi,H. Mbarek,V. Madar,W. Peyrot,J. Vink,C. Verweij,E. D. de Geus,J. Smit,F. Wright,P. Sullivan,D. Boomsma,B. Penninx
Published 2014 in BMC Genomics
ABSTRACT
PUBLICATION RECORD
- Publication year
2014
- Venue
BMC Genomics
- Publication date
2014-01-17
- Fields of study
Biology, Medicine
- Identifiers
- External record
- Source metadata
Semantic Scholar, PubMed
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