A Holistic Analysis of the Intestinal Stem Cell Niche Network
Hansen, D. M.; Meneses Giles, P. I.; He, X. C.; Chen, S.; Paulson, A.; Dekaney, C. M.; Wang, J.; Hu, D.; Venkatraman, A.; Kim, W.; Kaddis, J.; Olack, B. J.; Dunn, J. C. Y.; Kuo, C.; Henning, S.; Hanash, A. M.; Houchen, C. W.; Lynch, J.; Martin, M. G.; Niland, J. C.; Stelzner, M.; Wong, M.; Wang, T. C.; Yu, J.; Yan, K.; Li, L.
Show abstract
Although many studies into the intestinal stem cell (ISC) niche have been carried out, they have focused on the role of a single cell type or molecular signal. However, no holistic comparisons of the predominant cell types and signals present within the intestinal mucosa have been conducted to date. We utilize bulk RNA sequencing to profile 20 different mucosal cell types covering four major cell categories: epithelial, stromal, endothelial and immune. We further examined the stromal signaling environment using scRNAseq to provide a more comprehensive view of the signaling microenvironment within the intestinal mucosa. We identified the primary signals for the major ISC regulatory pathways and their respective cellular sources. Our analysis suggests that a niche network exists, with no single cell type being responsible for ISC self-renewal, proliferation, or differentiation; rather, each cell type within the network carries out specific functions in a highly cooperative and coordinated manner.
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