Bioinformatic analysis of endometrial miRNA expression profile at day 26-28 of pregnancy in the mare.
Abstract: The establishment of the fetomaternal interface depends on precisely regulated communication between the conceptus and the uterine environment. Recent evidence suggests that microRNAs (miRNAs) may play an important role in embryo-maternal dialogue. This study aimed to determine the expression profile of endometrial miRNAs during days 26-28 of equine pregnancy. Additionally, the study aimed to predict target genes for differentially expressed miRNAs (DEmiRs) and their potential role in embryo attachment, adhesion, and implantation. Using next-generation sequencing, we identified 81 DEmiRs between equine endometrium during the pre-attachment period of pregnancy (day 26-28) and endometrium during the mid-luteal phase of the estrous cycle (day 10-12). The identified DEmiRs appear to have a significant role in regulating the expression of genes that influence cell fate and properties, as well as endometrial receptivity formation. These miRNAs include eca-miR-21, eca-miR-126-3p, eca-miR-145, eca-miR-451, eca-miR-491-5p, members of the miR-200 family, and the miRNA-17-92 cluster. The target genes predicted for the identified DEmiRs are associated with ion channel activity and sphingolipid metabolism. Furthermore, it was noted that the expression of mucin 1 and leukemia inhibitory factor, genes potentially regulated by the identified DEmiRs, was up-regulated at day 26-28 of pregnancy. This suggests that miRNAs may play a role in regulating specific genes to create a favorable uterine environment that is necessary for proper attachment, adhesion, and implantation of the embryo in mares.
© 2024. The Author(s).
Publication Date: 2024-02-16 PubMed ID: 38365979PubMed Central: PMC10873421DOI: 10.1038/s41598-024-53499-xGoogle Scholar: Lookup
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- Journal Article
Summary
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The research focuses on identifying how microRNAs in a mare’s endometrium may influence the development of the embryo during days 26-28 of equine pregnancy. The study found key differentially expressed microRNAs and tied them to the regulation of important genes for embryo attachment and implantation.
Objective of the Research
- The primary goal of this research was to investigate and understand the profile of microRNAs (miRNAs) within the endometrium of a mare during the 26th to 28th days of equine pregnancy. miRNAs are critical for cell fate, properties, and endometrial receptivity formation.
- A secondary objective was to identify gene targets for the differentiated miRNAs and their potential role in the embryo’s adhesion, attachment, and implantation processes.
Methodology
- The study used next-generation sequencing to identify differentially expressed miRNAs (DEmiRs) between the endometrium during the pre-attachment period of pregnancy (day 26-28) and the mid-luteal phase of the estrous cycle (day 10-12). A total of 81 DEmiRs were identified.
- The researchers then made predictions of the target genes for the DEmiRs, focusing on how these genes might be connected with ion channel activity and sphingolipid metabolism.
Major Findings
- Among the identified DEmiRs, miRNAs like eca-miR-21, eca-miR-126-3p, eca-miR-145, eca-miR-451, eca-miR-491-5p, members of the miR-200 family, and the miRNA-17-92 cluster were found to be significant in the regulation of genes that influenced cell fate and properties and endometrial receptivity formation.
- The researchers observed that the expression of mucin 1 and leukemia inhibitory factor genes, which are potentially regulated by the identified DEmiRs, was up-regulated on the 26th to 28th days of pregnancy.
- This increased expression suggests a potential role of miRNAs in facilitating a suitable uterine environment needed for the successful attachment, adhesion, and implantation of an embryo in mares.
Cite This Article
APA
Sadowska A, Molcan T, Wójtowicz A, Lukasik K, Pawlina-Tyszko K, Gurgul A, Ferreira-Dias G, Skarzynski DJ, Szóstek-Mioduchowska A.
(2024).
Bioinformatic analysis of endometrial miRNA expression profile at day 26-28 of pregnancy in the mare.
Sci Rep, 14(1), 3900.
https://doi.org/10.1038/s41598-024-53499-x Publication
Researcher Affiliations
- Department of Reproductive Immunology and Pathology, Institute of Animal Reproduction and Food Research of Polish Academy of Sciences, Tuwima Street 10, 10-748, Olsztyn, Poland.
- Molecular Biology Laboratory, Institute of Animal Reproduction and Food Research, Polish Academy of Sciences, Tuwima Street 10, 10-748, Olsztyn, Poland.
- Department of Reproductive Immunology and Pathology, Institute of Animal Reproduction and Food Research of Polish Academy of Sciences, Tuwima Street 10, 10-748, Olsztyn, Poland.
- Department of Reproductive Immunology and Pathology, Institute of Animal Reproduction and Food Research of Polish Academy of Sciences, Tuwima Street 10, 10-748, Olsztyn, Poland.
- Department of Animal Molecular Biology, National Research Institute of Animal Production, Sarego Street 2, 31-047, Kraków, Poland.
- Center for Experimental and Innovative Medicine, University of Agriculture in Krakow, Mickiewicza Street 21, 31-120, Kraków, Poland.
- CIISA-Center for Interdisciplinary Research in Animal Health, Faculty of Veterinary Medicine, University of Lisbon, 1300-477, Lisbon, Portugal.
- Associate Laboratory for Animal and Veterinary Sciences (AL4AnimalS), 1300-477, Lisbon, Portugal.
- Department of Reproductive Immunology and Pathology, Institute of Animal Reproduction and Food Research of Polish Academy of Sciences, Tuwima Street 10, 10-748, Olsztyn, Poland.
- Department of Reproductive Immunology and Pathology, Institute of Animal Reproduction and Food Research of Polish Academy of Sciences, Tuwima Street 10, 10-748, Olsztyn, Poland. a.szostek-mioduchowska@pan.olsztyn.pl.
MeSH Terms
- Pregnancy
- Horses / genetics
- Animals
- Female
- Embryo Implantation / genetics
- Endometrium / metabolism
- MicroRNAs / genetics
- MicroRNAs / metabolism
- Uterus / metabolism
- Embryo, Mammalian / metabolism
Grant Funding
- 2017/01/X/NZ5/01528 / Narodowe Centrum Nauki
- 5/FBW/2021 / Department of Reproductive Immunology and Pathology, Institute of Animal Reproduction and Food Research of Polish Academy of Sciences, Olsztyn, Poland
Conflict of Interest Statement
The authors declare no competing interests.
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