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Dynamics of the Equine Placental DNA Methylome and Transcriptome from Mid- to Late Gestation

The placenta is a temporary organ that is essential for the survival of the fetus, with a lifelong effect on the health of both the offspring and the dam. The functions of the placenta are controlled by its dynamic gene expression during gestation. In this study, we aimed to investigate the equine p...

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Autores principales: Orellana-Guerrero, Daniela, Uribe-Salazar, José M., El-Sheikh Ali, Hossam, Scoggin, Kirsten E., Ball, Barry, Daels, Peter, Finno, Carrie J., Dini, Pouya
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10139181/
https://www.ncbi.nlm.nih.gov/pubmed/37108254
http://dx.doi.org/10.3390/ijms24087084
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author Orellana-Guerrero, Daniela
Uribe-Salazar, José M.
El-Sheikh Ali, Hossam
Scoggin, Kirsten E.
Ball, Barry
Daels, Peter
Finno, Carrie J.
Dini, Pouya
author_facet Orellana-Guerrero, Daniela
Uribe-Salazar, José M.
El-Sheikh Ali, Hossam
Scoggin, Kirsten E.
Ball, Barry
Daels, Peter
Finno, Carrie J.
Dini, Pouya
author_sort Orellana-Guerrero, Daniela
collection PubMed
description The placenta is a temporary organ that is essential for the survival of the fetus, with a lifelong effect on the health of both the offspring and the dam. The functions of the placenta are controlled by its dynamic gene expression during gestation. In this study, we aimed to investigate the equine placental DNA methylome as one of the fundamental mechanisms that controls the gene expression dynamic. Chorioallantois samples from four (4M), six (6M), and ten (10M) months of gestation were used to map the methylation pattern of the placenta. Globally, methylation levels increased toward the end of gestation. We identified 921 differentially methylated regions (DMRs) between 4M and 6M, 1225 DMRs between 4M and 10M, and 1026 DMRs between 6M and 10M. A total of 817 genes carried DMRs comparing 4M and 6M, 978 comparing 4M and 10M, and 804 comparing 6M and 10M. We compared the transcriptomes between the samples and found 1381 differentially expressed genes (DEGs) when comparing 4M and 6M, 1428 DEGs between 4M and 10M, and 741 DEGs between 6M and 10M. Finally, we overlapped the DEGs and genes carrying DMRs (DMRs-DEGs). Genes exhibiting (a) higher expression, low methylation and (b) low expression, high methylation at different time points were identified. The majority of these DMRs-DEGs were located in introns (48.4%), promoters (25.8%), and exons (17.7%) and were involved in changes in the extracellular matrix; regulation of epithelial cell migration; vascularization; and regulation of minerals, glucose, and metabolites, among other factors. Overall, this is the first report highlighting the dynamics in the equine placenta methylome during normal pregnancy. The findings presented serve as a foundation for future studies on the impact of abnormal methylation on the outcomes of equine pregnancies.
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spelling pubmed-101391812023-04-28 Dynamics of the Equine Placental DNA Methylome and Transcriptome from Mid- to Late Gestation Orellana-Guerrero, Daniela Uribe-Salazar, José M. El-Sheikh Ali, Hossam Scoggin, Kirsten E. Ball, Barry Daels, Peter Finno, Carrie J. Dini, Pouya Int J Mol Sci Article The placenta is a temporary organ that is essential for the survival of the fetus, with a lifelong effect on the health of both the offspring and the dam. The functions of the placenta are controlled by its dynamic gene expression during gestation. In this study, we aimed to investigate the equine placental DNA methylome as one of the fundamental mechanisms that controls the gene expression dynamic. Chorioallantois samples from four (4M), six (6M), and ten (10M) months of gestation were used to map the methylation pattern of the placenta. Globally, methylation levels increased toward the end of gestation. We identified 921 differentially methylated regions (DMRs) between 4M and 6M, 1225 DMRs between 4M and 10M, and 1026 DMRs between 6M and 10M. A total of 817 genes carried DMRs comparing 4M and 6M, 978 comparing 4M and 10M, and 804 comparing 6M and 10M. We compared the transcriptomes between the samples and found 1381 differentially expressed genes (DEGs) when comparing 4M and 6M, 1428 DEGs between 4M and 10M, and 741 DEGs between 6M and 10M. Finally, we overlapped the DEGs and genes carrying DMRs (DMRs-DEGs). Genes exhibiting (a) higher expression, low methylation and (b) low expression, high methylation at different time points were identified. The majority of these DMRs-DEGs were located in introns (48.4%), promoters (25.8%), and exons (17.7%) and were involved in changes in the extracellular matrix; regulation of epithelial cell migration; vascularization; and regulation of minerals, glucose, and metabolites, among other factors. Overall, this is the first report highlighting the dynamics in the equine placenta methylome during normal pregnancy. The findings presented serve as a foundation for future studies on the impact of abnormal methylation on the outcomes of equine pregnancies. MDPI 2023-04-11 /pmc/articles/PMC10139181/ /pubmed/37108254 http://dx.doi.org/10.3390/ijms24087084 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Orellana-Guerrero, Daniela
Uribe-Salazar, José M.
El-Sheikh Ali, Hossam
Scoggin, Kirsten E.
Ball, Barry
Daels, Peter
Finno, Carrie J.
Dini, Pouya
Dynamics of the Equine Placental DNA Methylome and Transcriptome from Mid- to Late Gestation
title Dynamics of the Equine Placental DNA Methylome and Transcriptome from Mid- to Late Gestation
title_full Dynamics of the Equine Placental DNA Methylome and Transcriptome from Mid- to Late Gestation
title_fullStr Dynamics of the Equine Placental DNA Methylome and Transcriptome from Mid- to Late Gestation
title_full_unstemmed Dynamics of the Equine Placental DNA Methylome and Transcriptome from Mid- to Late Gestation
title_short Dynamics of the Equine Placental DNA Methylome and Transcriptome from Mid- to Late Gestation
title_sort dynamics of the equine placental dna methylome and transcriptome from mid- to late gestation
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10139181/
https://www.ncbi.nlm.nih.gov/pubmed/37108254
http://dx.doi.org/10.3390/ijms24087084
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