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Series GSE81900 Query DataSets for GSE81900
Status Public on Aug 30, 2017
Title OCT4 and SOX2 Work as Transcriptional Activators in Reprogramming Human Fibroblasts
Organism Homo sapiens
Experiment type Expression profiling by array
Genome binding/occupancy profiling by high throughput sequencing
Summary SOX2 and OCT4, in conjunction with KLF4 and cMYC, are sufficient to reprogram human fibroblasts to induced pluripotent stem cells (iPSCs), but it is unclear if they function as transcriptional activators or as repressors. We now show that, like OCT4, SOX2 functions as a transcriptional activator. We substituted SOX2-VP16 (a strong activator) for wild-type (WT) SOX2, and we saw an increase in the efficiency and rate of reprogramming, whereas the SOX2-HP1 fusion (a strong repressor) eliminated reprogramming. We report that, at an early stage of reprogramming, virtually all DNA-bound OCT4, SOX2, and SOX2-VP16 were embedded in putative enhancers, about half of which were created de novo. Those associated with SOX2-VP16 were, on average, stronger than those bearing WT SOX2. Many newly created putative enhancers were transient, and many transcription factor locations on DNA changed as reprogramming progressed. These results are consistent with the idea that, during reprogramming, there is an intermediate state that is distinct from both parental cells and iPSCs.
 
Overall design Refer to individual Series
 
Citation(s) 28813671
Submission date May 25, 2016
Last update date May 15, 2019
Contact name Mark Ptashne
E-mail(s) m-ptashne@mskcc.org
Organization name Sloan Kettering Institute
Department Molecular Biology Program
Lab Mark Ptashne
Street address 1275 York Ave
City New York
State/province NY
ZIP/Postal code 10065
Country USA
 
Platforms (2)
GPL10558 Illumina HumanHT-12 V4.0 expression beadchip
GPL16791 Illumina HiSeq 2500 (Homo sapiens)
Samples (95)
GSM2177032 hiPS R4 (Feeder free)
GSM2177033 H1 hESC (Feeder free)
GSM2177034 hiPS S1 (on MEFs)
This SuperSeries is composed of the following SubSeries:
GSE81891 OCT4 and SOX2 Work as Transcriptional Activators in Reprogramming Human Fibroblasts
GSE81899 OCT4 and SOX2 Work as Transcriptional Activators in Reprogramming Human Fibroblasts
Relations
BioProject PRJNA324088

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Supplementary file Size Download File type/resource
GSE81900_RAW.tar 26.2 Mb (http)(custom) TAR
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