Project description:Zfp831 is required for proper Tfh cell differentiation. In order to further understand the mechanisms whereby Zfp831 enhances Tfh differentiation, we conducted ChIP-seq analysis of Zfp831-HA
Project description:Despite this critical role in islet cell development, the precise function and downstream genetic programs regulated directedly by NEUROG3 remain elusive. We therefore mapped genome-wide NEUROG3 occupancy in human induced pluripotent stem cell (iPSC)-derived endocrine progenitors and determined NEUROG3 dependency of associated genes to uncover direct targets. To this aim, we generated a novel hiPSC line (NEUROG3-HA-P2A-Venus), where NEUROG3 is HA-tagged and fused to a self-cleaving fluorescent VENUS reporter. We used the CUT&RUN technique, an alternative method to CHIP-seq allowing transcription factor profiling from a low cell number, to map NEUROG3 occupancy and epigenetic marks in pancreatic endocrine progenitors (PEP) differentiated from this hiPSC line. To optimize the stringency and relevance of NEUROG3 binding sites, we focused our analysis on regions identified both with HA and NEUROG3 antibodies and integrated NEUROG3 occupancy data with chromatin status and gene expression in PEPs and their NEUROG3-dependence. Mapping of NEUROG3 genome occupancy in PEPs uncovers an unexpectedly broad, direct control of the endocrine gene regulatory network (GRN) and raises novel hypotheses on how this master regulator controls islet and beta cell differentiation.
Project description:PRCC-TFE3 is an oncogenic chimeric transcription factor derived from human TFE3-rearranged renal cell carcinoma. To analyze its genome-wide occupancy, we developed HA-tagged PRCC-TFE3-inducible HK-2 cell lines, which expresses HA-tagged TFE3 in a doxycycline-dependent manner. We determined the binding regions of HA-PRCC-TFE3 by ChIPSeq.
Project description:This study describes the binding profile of HA-hWDR5 in mouse embryonic bodies with early (T12h) and late (T48h) rescue of HA-hWDR5