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Does cellular sex matter? Dimorphic transcriptional differences between female and male endothelial cells.

Abstract：

OBJECTIVE:Significant sex differences exist in cardiovascular diseases. Although an impact of gonadal hormones is presumed, it is largely unknown whether sexually dimorphic gene expression also plays a role and whether cells themselves show intrinsic sex differences. METHODS:We performed whole genome expression analyses in human umbilical vein endothelial cells (HUVEC) from 20 male and 20 female donors and compared levels of gene transcription between the sexes. To further assess whether there is a sex-specific response to stress, we subjected male and female HUVEC to shear for 24 h and analysed changes in gene expression. RESULTS:Genes indicative for greater immune responsiveness were stronger expressed in female compared to male HUVEC. There was a significant enrichment of 77 immune-related genes in female HUVEC. These increased transcriptional levels in female cells were verified for 20 genes by real-time RT-PCR. 6.7% of all mRNAs were regulated by shear stress. Female HUVEC showed a more pronounced transcriptional response to shear than did their male counterparts. In addition to quantitative differences, a number of genes were regulated in the opposite direction between the two sexes by shear stress. Functionally, female HUVEC showed a higher cell viability after serum starvation and an increased tube formation capacity compared to male cells. CONCLUSION:These findings underscore the importance for differentiation between male and female cells in cell culture experiments. This may apply not only to endothelial cells but might be generalized to other cell types as well. The observed sexual dimorphisms in gene expression in endothelial cells may contribute to sex differences between males and females in endothelial function.

journal_name

Atherosclerosis

journal_title

Atherosclerosis

authors

Lorenz M,Koschate J,Kaufmann K,Kreye C,Mertens M,Kuebler WM,Baumann G,Gossing G,Marki A,Zakrzewicz A,Miéville C,Benn A,Horbelt D,Wratil PR,Stangl K,Stangl V

doi

10.1016/j.atherosclerosis.2015.02.018

subject

Has Abstract

pub_date

2015-05-01 00:00:00

pages

61-72

issue

1

eissn

0021-9150

issn

1879-1484

pii

S0021-9150(15)00108-2

journal_volume

240

pub_type

杂志文章

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