Abstract:
:Oct4 is a well-known transcription factor that plays fundamental roles in stem cell self-renewal, pluripotency, and somatic cell reprogramming. However, limited information is available on Oct4-associated protein complexes and their intrinsic protein-protein interactions that dictate Oct4's critical regulatory activities. Here we employed an improved affinity purification approach combined with mass spectrometry to purify Oct4 protein complexes in mouse embryonic stem cells (mESCs), and discovered many novel Oct4 partners important for self-renewal and pluripotency of mESCs. Notably, we found that Oct4 is associated with multiple chromatin-modifying complexes with documented as well as newly proved functional significance in stem cell maintenance and somatic cell reprogramming. Our study establishes a solid biochemical basis for genetic and epigenetic regulation of stem cell pluripotency and provides a framework for exploring alternative factor-based reprogramming strategies.
journal_name
Cell Resjournal_title
Cell researchauthors
Ding J,Xu H,Faiola F,Ma'ayan A,Wang Jdoi
10.1038/cr.2011.179subject
Has Abstractpub_date
2012-01-01 00:00:00pages
155-67issue
1eissn
1001-0602issn
1748-7838pii
cr2011179journal_volume
22pub_type
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