Linh M. Vuong, Songqin Pan, Robert A. Sierra, Marian L. Waterman, Paul D. Gershon, Peter J. Donovan
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Characterization of a chromatin‐associated TCF7L1 complex in human embryonic stem cells
Human embryonic stem cells (hESCs) resemble the pluripotent epiblast cells found in the early postimplantation human embryo and represent the “primed” state of pluripotency. One factor that helps primed pluripotent cells retain pluripotency and prepare genes for differentiation is the transcription factor TCF7L1, a member of a small family of proteins known as T cell factors/Lymphoid enhancer factors (TCF/LEF) that act as downstream components of the WNT signaling pathway. Transcriptional output of the WNT pathway is regulated, in part, by the activity of TCF/LEFs in conjunction with another component of the WNT pathway, β‐CATENIN. Because TCF7L1 plays an important role in regulating pluripotency, we began to characterize the protein complex associated with TCF7L1 when bound to chromatin in hESCs using rapid immunoprecipitation of endogenous proteins (RIME). Data are available via ProteomeXchange with identifier PXD047582. These data identify known and new partners of TCF7L1 on chromatin and provide novel insights into how TCF7L1 and pluripotency itself might be regulated.
期刊介绍:
PROTEOMICS is the premier international source for information on all aspects of applications and technologies, including software, in proteomics and other "omics". The journal includes but is not limited to proteomics, genomics, transcriptomics, metabolomics and lipidomics, and systems biology approaches. Papers describing novel applications of proteomics and integration of multi-omics data and approaches are especially welcome.