Porcine oocytes matured in a chemically defined medium are transcriptionally active.
Theriogenology
; 203: 89-98, 2023 Jun.
Article
em En
| MEDLINE
| ID: mdl-37001226
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.
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Base de dados:
MEDLINE
Assunto principal:
Oócitos
/
Técnicas de Maturação in Vitro de Oócitos
Limite:
Animals
Idioma:
En
Ano de publicação:
2023
Tipo de documento:
Article