Molecular interactions at the bovine embryo-endometrial epithelium interface.
Reproduction
; 160(6): 887-903, 2020 12.
Article
em En
| MEDLINE
| ID: mdl-33112768
ABSTRACT
In cattle, pre-implantation embryo development occurs within the confinement of the uterine lumen. Current understanding of the bi-lateral molecular interactions between embryo and endometrium that are required for a successful pregnancy is limited. We hypothesized that the nature and intensity of reciprocal embryo-endometrium interactions depend on the extent of their physical proximity. Bovine endometrial epithelial cells (bEECs) and morulae were co-cultured in juxtacrine (Contact+) or non-juxtacrine (Contact-) apposition. Co-culture with bEECs improved blastocyst rates on day 7.5, regardless of juxtaposition. Contact+ regulated transcription of 1797 endometrial genes vs only 230 in the Contact- group compared to their control (no embryos) counterparts. A subset of 50 overlapping differentially expressed genes (DEGs) defined embryo-induced effects on bEEC transcriptome irrespective of juxtaposition. Functional analysis revealed pathways associated with interferon signaling and prostanoid biosynthesis. A total of 175 genes displayed a graded expression level depending on Contact+ or Contact-. These genes were involved in interferon-related and antigen presentation pathways. Biological processes enriched exclusively in Contact+ included regulation of cell cycle and sex-steroid biosynthesis. We speculate that, in vivo, embryonic signals fine-tune the function of surrounding cells to ultimately maximize pregnancy success.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Regulação da Expressão Gênica no Desenvolvimento
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Técnicas de Cultura Embrionária
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Embrião de Mamíferos
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Endométrio
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Células Epiteliais
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Transcriptoma
Limite:
Animals
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Pregnancy
Idioma:
En
Ano de publicação:
2020
Tipo de documento:
Article