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In vitro procedures exacerbate chromosome instability in early cleavage stage embryos

ABSTRACT: Chromosomal instability (CIN) occurs at high frequency during early in vitro embryogenesis and is known to be associated with early embryonic loss in humans. The chromosomal stability of in vivo-conceived cleavage stage embryos largely remains unknown. Here, we applied haplotyping and copy number profiling to investigate genomic architecture of 171 single bovine blastomeres and to compare the nature and frequency of CIN between in vivo embryos, in vitro embryos produced from ovum pick up with ovarian stimulation (OPU-IVF), and in vitro produced embryos from in vitro matured oocytes without ovarian stimulation (IVM-IVF). Our data shows that CIN is significantly lower in in vivo conceived cleavage stage embryos when compared to in vitro cultured embryos, as genomic stability of single blastomeres in both IVF embryos was severely compromised (P<0.0001)

ORGANISM(S): Bos taurus

PROVIDER: GSE95358 | GEO | 2017/09/24

SECONDARY ACCESSION(S): PRJNA377907

REPOSITORIES: GEO

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