PMID- 30319048 OWN - NLM STAT- MEDLINE DCOM- 20190918 LR - 20240410 IS - 1557-8534 (Electronic) IS - 1547-3287 (Print) IS - 1547-3287 (Linking) VI - 27 IP - 24 DP - 2018 Dec 15 TI - FACT Inhibition Blocks Induction But Not Maintenance of Pluripotency. PG - 1693-1701 LID - 10.1089/scd.2018.0150 [doi] AB - The histone chaperone facilitates chromatin transactions (FACT) is associated with nuclear processes, including DNA transcription, replication, and repair. We previously showed that FACT is transiently recruited to pluripotency-associated target genes by newly bound Oct4. In this study, we tested the effects of FACT depletion by knockout or chemical inhibition on the induction and maintenance of pluripotency. Clustered regularly interspaced short palindromic repeat (CRISPR)-mediated deletion of the FACT subunit Spt16 did not affect the viability or proliferation of fibroblasts but blocked their ability to form induced pluripotent stem cells. Similarly, a small molecule inhibitor of FACT blocked the induction of pluripotency at an early step in reprogramming, without affecting the viability, proliferation, undifferentiated state, or the expression of core pluripotency genes. Notably, trypsinization and passage of pluripotent cells transiently reintroduced a requirement for FACT. Although FACT has been considered to be an essential transcription elongation factor, these results contribute to the emerging view that it instead promotes transitions between stable chromatin states, including during reprogramming to pluripotency. FAU - Shen, Zuolian AU - Shen Z AD - 1 Department of Pathology, University of Utah School of Medicine , Salt Lake City, Utah. FAU - Formosa, Tim AU - Formosa T AD - 2 Department of Biochemistry, University of Utah School of Medicine , Salt Lake City, Utah. FAU - Tantin, Dean AU - Tantin D AD - 1 Department of Pathology, University of Utah School of Medicine , Salt Lake City, Utah. LA - eng GR - R01 GM064649/GM/NIGMS NIH HHS/United States GR - R01 GM122778/GM/NIGMS NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't DEP - 20181128 PL - United States TA - Stem Cells Dev JT - Stem cells and development JID - 101197107 RN - 0 (Chromatin) RN - 0 (Supt16 protein, mouse) RN - 0 (Transcription Factors) SB - IM MH - 3T3 Cells MH - Animals MH - Cells, Cultured MH - *Cellular Reprogramming MH - Chromatin/metabolism MH - Mice MH - Pluripotent Stem Cells/*cytology MH - Transcription Factors/antagonists & inhibitors/genetics/*metabolism PMC - PMC6302925 OTO - NOTNLM OT - FACT OT - embryonic stem cells OT - induced pluripotent stem cells OT - pluripotency COIS- No competing financial interests exist. EDAT- 2018/10/16 06:00 MHDA- 2019/09/19 06:00 PMCR- 2019/12/15 CRDT- 2018/10/16 06:00 PHST- 2018/10/16 06:00 [pubmed] PHST- 2019/09/19 06:00 [medline] PHST- 2018/10/16 06:00 [entrez] PHST- 2019/12/15 00:00 [pmc-release] AID - 10.1089/scd.2018.0150 [pii] AID - 10.1089/scd.2018.0150 [doi] PST - ppublish SO - Stem Cells Dev. 2018 Dec 15;27(24):1693-1701. doi: 10.1089/scd.2018.0150. Epub 2018 Nov 28.