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Porcine oocytes matured in a chemically defined medium are transcriptionally active.

Porcine oocytes matured in a chemically defined medium are transcriptionally active.

Authors :
Murin M
Nemcova L
Bartkova A
Gad A
Lucas-Hahn A
Strejcek F
Prochazka R
Laurincik J
Source :
Theriogenology [Theriogenology] 2023 Jun; Vol. 203, pp. 89-98. Date of Electronic Publication: 2023 Mar 24.
Publication Year :
2023

Abstract

The statement that fully-grown porcine oocytes (oocytes from follicles with diameter from 3 to 6 mm) are transcriptionally quiescent is not as strongly supported as it was before. Currently, we know that there is a difference between the transcription profile of germinal vesicle (GV) and metaphase II (MII) oocytes. The goal of our study was to compare the transcription profile of GV, germinal vesicle breakdown (GVBD), metaphase I (MI), and MII oocytes matured in the chemically defined medium FLI. Oocytes were sequenced, and the results were subsequently validated using quantitative reverse transcription polymerase chain reaction (RT-qPCR). We detected multiple differentially transcribed mRNAs, of which many were upregulated. Among them we found mRNAs necessary for protein production, mitochondrial functions and cytoplasmic maturation. Collectively, these data support the hypothesis that transcription activity in fully-grown porcine oocytes is necessary for key processes during their successful maturation in vitro in a chemically defined maturation medium.<br />Competing Interests: Declaration of competing interest None.<br /> (Copyright © 2023. Published by Elsevier Inc.)

Details

Language :
English
ISSN :
1879-3231
Volume :
203
Database :
MEDLINE
Journal :
Theriogenology
Publication Type :
Academic Journal
Accession number :
37001226
Full Text :
https://doi.org/10.1016/j.theriogenology.2023.03.019