Abstract
Successful production of high quality blastocysts in vitro depends on the use of a culture system that ensures the acquisition of developmental competence by the maturing oocyte. It is now clear that the in vitro maturation environment has a major influence on the oocyte's ability to acquire the potential to develop into blastocysts. In this work we examine the impact of oocyte culture media on the quality of blastocysts by comparing developmental rates, cell number and their allocation to embryonic cell lineages, apoptosis, and expression of developmentally important genes. Higher total cell count and ICM:TCN ratio, which are indicative of embryo viability, were observed in embryos derived from oocyte maturation in TCM-199 supplemented with serum when compared to blastocysts derived from oocyte maturation in SOF BSA. Moreover, oocyte maturation in TCM-199 supplemented with serum-generated embryos of higher morphological quality and producing higher levels of Interferon Tau transcripts when compared to embryos derived from oocyte maturation in SOF BSA. In conclusion, the oocyte maturation regimen affected the morphological feature of blastocysts, including total cell count and allocation of cells to trophectoderm (TE) and inner cell mass (ICM) lineages and the expression profiles of genes involved in various embryo functions such as early embryonic growth, regulation of gene transcription, trophoblast differentiation and function, embryo-maternal communication, and stress response. Our results show that the oocyte culture media have strong impact on the quality of embryos produced in vitro and emphasize the need for more in depth evaluation of oocyte maturation protocols.
| Original language | English |
|---|---|
| Pages (from-to) | 1255-1270 |
| Number of pages | 16 |
| Journal | Molecular Reproduction and Development |
| Volume | 73 |
| Issue number | 10 |
| DOIs | |
| Publication status | Published - Oct 1 2006 |
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Keywords
- Apoptosis
- Cell lineage allocation
- Gene expression
- Protein supplements
ASJC Scopus subject areas
- Genetics
- Developmental Biology
- Cell Biology
Cite this
The impact of oocyte maturation media on early bovine embryonic development. / Russell, D. Fischer; Baqir, S.; Bordignon, J.; Betts, D. H.
In: Molecular Reproduction and Development, Vol. 73, No. 10, 01.10.2006, p. 1255-1270.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - The impact of oocyte maturation media on early bovine embryonic development
AU - Russell, D. Fischer
AU - Baqir, S.
AU - Bordignon, J.
AU - Betts, D. H.
PY - 2006/10/1
Y1 - 2006/10/1
N2 - Successful production of high quality blastocysts in vitro depends on the use of a culture system that ensures the acquisition of developmental competence by the maturing oocyte. It is now clear that the in vitro maturation environment has a major influence on the oocyte's ability to acquire the potential to develop into blastocysts. In this work we examine the impact of oocyte culture media on the quality of blastocysts by comparing developmental rates, cell number and their allocation to embryonic cell lineages, apoptosis, and expression of developmentally important genes. Higher total cell count and ICM:TCN ratio, which are indicative of embryo viability, were observed in embryos derived from oocyte maturation in TCM-199 supplemented with serum when compared to blastocysts derived from oocyte maturation in SOF BSA. Moreover, oocyte maturation in TCM-199 supplemented with serum-generated embryos of higher morphological quality and producing higher levels of Interferon Tau transcripts when compared to embryos derived from oocyte maturation in SOF BSA. In conclusion, the oocyte maturation regimen affected the morphological feature of blastocysts, including total cell count and allocation of cells to trophectoderm (TE) and inner cell mass (ICM) lineages and the expression profiles of genes involved in various embryo functions such as early embryonic growth, regulation of gene transcription, trophoblast differentiation and function, embryo-maternal communication, and stress response. Our results show that the oocyte culture media have strong impact on the quality of embryos produced in vitro and emphasize the need for more in depth evaluation of oocyte maturation protocols.
AB - Successful production of high quality blastocysts in vitro depends on the use of a culture system that ensures the acquisition of developmental competence by the maturing oocyte. It is now clear that the in vitro maturation environment has a major influence on the oocyte's ability to acquire the potential to develop into blastocysts. In this work we examine the impact of oocyte culture media on the quality of blastocysts by comparing developmental rates, cell number and their allocation to embryonic cell lineages, apoptosis, and expression of developmentally important genes. Higher total cell count and ICM:TCN ratio, which are indicative of embryo viability, were observed in embryos derived from oocyte maturation in TCM-199 supplemented with serum when compared to blastocysts derived from oocyte maturation in SOF BSA. Moreover, oocyte maturation in TCM-199 supplemented with serum-generated embryos of higher morphological quality and producing higher levels of Interferon Tau transcripts when compared to embryos derived from oocyte maturation in SOF BSA. In conclusion, the oocyte maturation regimen affected the morphological feature of blastocysts, including total cell count and allocation of cells to trophectoderm (TE) and inner cell mass (ICM) lineages and the expression profiles of genes involved in various embryo functions such as early embryonic growth, regulation of gene transcription, trophoblast differentiation and function, embryo-maternal communication, and stress response. Our results show that the oocyte culture media have strong impact on the quality of embryos produced in vitro and emphasize the need for more in depth evaluation of oocyte maturation protocols.
KW - Apoptosis
KW - Cell lineage allocation
KW - Gene expression
KW - Protein supplements
UR - http://www.scopus.com/inward/record.url?scp=33748321081&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=33748321081&partnerID=8YFLogxK
U2 - 10.1002/mrd.20553
DO - 10.1002/mrd.20553
M3 - Article
C2 - 16865717
AN - SCOPUS:33748321081
VL - 73
SP - 1255
EP - 1270
JO - Molecular Reproduction and Development
JF - Molecular Reproduction and Development
SN - 1040-452X
IS - 10
ER -