PMID- 23458164 OWN - NLM STAT- MEDLINE DCOM- 20130923 LR - 20211203 IS - 2152-4998 (Electronic) IS - 2152-4971 (Print) IS - 2152-4971 (Linking) VI - 15 IP - 2 DP - 2013 Apr TI - Identifying candidate oocyte reprogramming factors using cross-species global transcriptional analysis. PG - 126-33 LID - 10.1089/cell.2012.0060 [doi] AB - There is mounting evidence to suggest that the epigenetic reprogramming capacity of the oocyte is superior to that of the current factor-based reprogramming approaches and that some factor-reprogrammed induced pluripotent stem cells (iPSCs) retain a degree of epigenetic memory that can influence differentiation capacity and may be linked to the observed expression of immunogenicity genes in iPSC derivatives. One hypothesis for this differential reprogramming capacity is the "chromatin loosening/enhanced reprogramming" concept, as previously described by John Gurdon and Ian Wilmut, as well as others, which postulates that the oocyte possesses factors that loosen the somatic cell chromatin structure, providing the epigenetic and transcriptional regulatory factors more ready access to repressed genes and thereby significantly increasing epigenetic reprogramming. However, to empirically test this hypothesis a list of candidate oocyte reprogramming factors (CORFs) must be ascertained that are significantly expressed in metaphase II oocytes. Previous studies have focused on intraspecies or cross-species transcriptional analysis of up to two different species of oocytes. In this study, we have identified eight CORFs (ARID2, ASF1A, ASF1B, DPPA3, ING3, MSL3, H1FOO, and KDM6B) based on unbiased global transcriptional analysis of oocytes from three different species (human, rhesus monkey, and mouse) that both demonstrate significant (p<0.05, FC>3) expression in oocytes of all three species and have well-established roles in loosening/opening up chromatin structure. We also identified an additional 15 CORFs that fit within our proposed "chromatin opening/fate transformative" (COFT) model. These CORFs may be able to augment Shinya Yamanaka's previously identified reprogramming factors (OCT4, SOX2, KLF4, and cMYC) and potentially facilitate the removal of epigenetic memory in iPSCs and/or reduce the expression of immunogenicity genes in iPSC derivatives, and may have applications in future personalized pluripotent stem cell based therapeutics. FAU - Awe, Jason P AU - Awe JP AD - Department of Molecular and Medical Pharmacology, University of California, Los Angeles, CA 90095, USA. FAU - Byrne, James A AU - Byrne JA LA - eng GR - UL1 TR000124/TR/NCATS NIH HHS/United States GR - UL1TR000124/TR/NCATS NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't DEP - 20130304 PL - United States TA - Cell Reprogram JT - Cellular reprogramming JID - 101528176 SB - IM MH - Animals MH - Cell Line MH - *Cell Transdifferentiation MH - Gene Expression Profiling MH - *Gene Expression Regulation MH - Humans MH - Induced Pluripotent Stem Cells/cytology/*metabolism MH - Kruppel-Like Factor 4 MH - Macaca mulatta MH - Mice MH - Oocytes/cytology/*metabolism MH - Species Specificity MH - *Transcription, Genetic PMC - PMC3616412 EDAT- 2013/03/06 06:00 MHDA- 2013/09/24 06:00 PMCR- 2014/04/01 CRDT- 2013/03/06 06:00 PHST- 2013/03/06 06:00 [entrez] PHST- 2013/03/06 06:00 [pubmed] PHST- 2013/09/24 06:00 [medline] PHST- 2014/04/01 00:00 [pmc-release] AID - 10.1089/cell.2012.0060 [pii] AID - 10.1089/cell.2012.0060 [doi] PST - ppublish SO - Cell Reprogram. 2013 Apr;15(2):126-33. doi: 10.1089/cell.2012.0060. Epub 2013 Mar 4.