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

Lorenz, Mario, Koschate, Janina, Kaufmann, Katharina, Kreye, Corinna, Mertens, Michael, Kuebler, Wolfgang M., Baumann, Gert, Gossing, Gabriele, Marki, Alex, Zakrzewicz, Andreas, Miéville, Christian, Benn, Andreas, Horbelt, Daniel, Wratil, Paul R., Stangl, Karl, Stangl, Verena·2015·Atherosclerosis
DOI 10.1016/j.atherosclerosis.2015.02.018
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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…

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Metadata

Authors
Lorenz, M., Koschate, J., Kaufmann, K., Kreye, C., Mertens, M., Kuebler, W. M., Baumann, G., Gossing, G., Marki, A., Zakrzewicz, A., Miéville, C., Benn, A., Horbelt, D., Wratil, P. R., Stangl, K., & Stangl, V.
Venue
Atherosclerosis
Publisher
Elsevier BV
Published
2015-05
Volume
240
Issue
1
Pages
61-72
ISSN
0021-9150
DOI
10.1016/j.atherosclerosis.2015.02.018
Cited by
70
References
3
Language
en
Licence

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