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Review
. 2008 Jul;116(7):371-84.
doi: 10.1055/s-2008-1076714. Epub 2008 Jun 17.

Transcriptome studies of bovine endometrium reveal molecular profiles characteristic for specific stages of estrous cycle and early pregnancy

S Bauersachs  1 , K Mitko, S E Ulbrich, H Blum, E Wolf
Affiliations
Review

Transcriptome studies of bovine endometrium reveal molecular profiles characteristic for specific stages of estrous cycle and early pregnancy

S Bauersachs et al. Exp Clin Endocrinol Diabetes. 2008 Jul.

Abstract

The endometrium undergoes marked functional changes during estrous cycle and pregnancy. As the adjacent environment of the conceptus, it represents the maternal interface for embryo-maternal communication, which is essential to maintain pregnancy. Transcriptome studies provide the unique opportunity to assess molecular profiles changing in response to endocrine or metabolic stimuli or to embryonic pregnancy recognition signals. Here we review the current state of transcriptome profiling techniques and the results of a series of transciptome studies comparing bovine endometrium samples during the estrous cycle or endometrium samples from pregnant vs. non-pregnant animals. These studies revealed specific mRNA profiles which are characteristic for the functional status of the endometrium. Transcriptome studies of endometrial samples recovered during the pre-attachment period identified many interferon-stimulated genes, genes that are possibly involved in embryo-maternal immune modulation ( C1S, C1R, C4, SERPING1, UTMP, CD81, IFITM1, BST2), as well as genes affecting cell adhesion ( AGRN, CD81, LGALS3BP, LGALS9, GPLD1, MFGE8, and TGM2) and remodeling of the endometrium ( CLDN4, MEP1B, LGMN, MMP19, TIMP2, TGM2, MET, and EPSTI1). The results of these transcriptome studies were compared to those of similar microarray analyses in human, mouse and Rhesus monkey to identify similarities in endometrial biology between mammalian species and species-specific differences. Future studies will cover dynamic transcriptome changes between different stages of early pregnancy, the relationship between metabolic problems in dairy cows and the functionality of reproductive tissues as well as endometrium transcriptome profiles in recipients of somatic cell nuclear transfer embryos.

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