Journal article
In Vitro Manipulation of Mammalian Preimplantation Embryos Can Alter Transcript Abundance of Histone Variants and Associated Factors
Cellular Reprogramming, Vol.13(5), pp.391-401
2011
PMID: 21827322
Abstract
Manipulation of mammalian embryos and gametes in vitro reduces viability. Specific causes for these reductions are still largely undetermined. Accumulating evidence suggests that survival rates and developmental competency may be reduced following disruptions in the epigenetic regulation of gene expression. Chromatin-based epigenetics can regulate the transcriptome through the establishment of different transcriptionally permissive and repressive chromatin environments. Recently, support has been gathering for the hypothesis that the in vitro embryo displays reduced viability due to abnormal remodelling of the paternal chromatin, which is hypothesized to result in global transcriptional repression. In this study, we have used quantitative real-time PCR to document the effect of in vitro culture on the transcription of genes that code for proteins that are directly involved in the establishment of chromatin environments. We compare in vitro embryos to embryos generated through parthenogenetic activation to determine how the absence of paternal chromatin remodeling affects transcriptional activity. Through these studies, we show that the expression of many genes encoding for histone proteins and other modifiers involved in chromatin-based epigenetic regulation are perturbed by in vitro culture. In addition, we show that the expression of many candidate genes was reduced in in vitro embryos but not in parthenogenetic embryos. These results support the hypothesis that events linked to remodeling of paternal chromatin may influence transcriptional activity in the in vitro embryo and that chromatin-based reprogramming events in developing embryos are dynamically responsive to prevailing conditions.
Details
- Title
- In Vitro Manipulation of Mammalian Preimplantation Embryos Can Alter Transcript Abundance of Histone Variants and Associated Factors
- Authors
- Georgia R Kafer (Author) - University of QueenslandPeter L Kaye (Author) - University of QueenslandMarie Pantaleon (Author) - University of QueenslandRalf J Moser (Author) - Commonwealth Scientific and Industrial Research OrganisationSigrid A Lehnert (Author) - Commonwealth Scientific and Industrial Research Organisation
- Publication details
- Cellular Reprogramming, Vol.13(5), pp.391-401
- Publisher
- Mary Ann Liebert, Inc. Publishers
- DOI
- 10.1089/cell.2011.0011
- ISSN
- 2152-4998
- PMID
- 21827322
- Organisation Unit
- School of Health - Biomedicine; Centre for Bioinnovation; School of Health and Behavioural Sciences - Legacy; School of Health and Sport Sciences - Legacy; University of the Sunshine Coast, Queensland; Australian Centre for Pacific Islands Research
- Language
- English
- Record Identifier
- 99554708302621
- Output Type
- Journal article
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