Gene expression profile differences in embryos derived from prepubertal and adult Japanese Black cattle during in vitro development
Dorji A , Yukihiro Ohkubo B , Kazuchika Miyoshi A and Mitsutoshi Yoshida A C
+ Author Affiliations
- Author Affiliations
A Laboratory of Animal Reproduction, United Graduate School of Agricultural Science, Kagoshima University, Korimoto 1-21-24, Kagoshima 890-0065, Japan.
B Nippon Zenyaku Kogyo Co., Ltd, Koriyama, Fukushima 963-0196, Japan.
C Corresponding author. Email: myoshida@ms.kagoshima-u.ac.jp
Reproduction, Fertility and Development 24(2) 370-381 https://doi.org/10.1071/RD11048
Submitted: 17 February 2011 Accepted: 3 June 2011 Published: 4 November 2011
Abstract
The present study was carried out to compare the gene expression profiles of in vitro-generated embryos derived from adult and prepubertal Japanese Black cattle oocytes using GeneChip Bovine Genome Array (containing 24 072 probe sets representing over 23 000 transcripts). Microarray experiments were performed on populations of 8- to 16-cell stage embryos and blastocysts derived from adult (24–35 months old) versus prepubertal (9–10 months old) Japanese Black cattle oocytes matured and fertilised in vitro. In total, 591 (2.4%) and 490 (2.0%) genes were differentially expressed in prepubertal and adult bovine in 8- to 16-cell and blastocyst stage embryos, respectively. Out of these, 218 and 248 genes were upregulated, while 373 and 242 were downregulated in prepubertal and adult 8- to 16-cell and blastocysts stage embryos, respectively. Gene ontology classification regarding biological process, molecular functions and cellular component revealed diversity in transcript abundances between prepubertal and adult groups in both the distinct developmental stages. Quantitative reverse transcription–PCR validated the expression differences of some selected transcripts as identified by microarray analysis. To our knowledge, this is the first report indicating the significant number of genes differentially expression (>2-fold, P < 0.01) in preimplantition embryos between adult and prepubertal Japanese Black cattle during in vitro development.
Additional keywords: bovine, developmental competence.
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