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Updated: May 29, 2026

Analysis of Chromosome Segregation, Histone Acetylation, and Spindle Morphology in Horse Oocytes
Published on: May 11, 2017
Global transcriptional analysis of oocyte-based and factor-based nuclear reprogramming in the nonhuman primate
1Department of Molecular and Medical Pharmacology, University of California, Los Angeles, California 90095, USA. jbyrne@mednet.ucla.edu
Abstract:
The mechanisms of nuclear reprogramming following somatic cell nuclear transfer (SCNT) to enucleated oocytes or factor-based reprogramming are poorly understood. In this study global transcriptional analysis was performed on a number of different rhesus monkey (Macaca mulatta) cell and tissue samples, including rhesus-induced pluripotent stem cells (IPSCs) and rhesus SCNT-derived embryonic stem cells (SCNT-ESCs). Global transcriptional cluster analysis and stem cell-specific gene expression analysis both suggested that the oocyte-reprogrammed SCNT-ESCs were transcriptionally closer to the control fertilized ESCs than IPSCs. These results, combined with previous epigenetic analysis studies in the mouse, reinforce the hypothesis that oocyte-reprogrammed cell nuclei are more completely reprogrammed to an ESC state than IPSCs. Transcriptional analysis of rhesus oocytes detected over 500 ESC-specific genes, including OCT3/4, NR5A2, and DNMT3B. These results, combined with previously published reprogramming research, were used as the basis for a general model to explain the mechanisms of nuclear reprogramming.
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