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Integrative multi-omics analysis of intestinal organoid differentiation

Rik GH Lindeboom, Lisa van Voorthuijsen1, Koen C Oost, Maria J Rodríguez-Colman, Maria V Luna-Velez, Cristina Furlan, Floriane Baraille, Pascal WTC Jansen, Agnès Ribeiro, Boudewijn MT Burgering, Hugo J Snippert, & Michiel Vermeulen

Intestinal organoids accurately recapitulate epithelial homeostasis in vivo, thereby representing a powerful in vitro system to investigate lineage specification and cellular differentiation. Here, we applied a multi-omics framework on stem cell-enriched and stem cell-depleted mouse intestinal organoids to obtain a holistic view of the molecular mechanisms that drive differential gene expression during adult intestinal stem cell differentiation. Our data revealed a global rewiring of the transcriptome and proteome between intestinal stem cells and enterocytes, with the majority of dynamic protein expression being transcription-driven. Integrating absolute mRNA and protein copy numbers revealed post-transcriptional regulation of gene expression. Probing the epigenetic landscape identified a large number of cell-type-specific regulatory elements, which revealed Hnf4g as a major driver of enterocyte differentiation. In summary, by applying an integrative systems biology approach, we uncovered multiple layers of gene expression regulation, which contribute to lineage specification and plasticity of the mouse small intestinal epithelium.


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June, 2018


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