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Cell. 2018 Nov 1;175(4):1156-1167.e15. doi: 10.1016/j.cell.2018.08.063. Epub 2018 Sep 27.

Spatial Reconstruction of Single Enterocytes Uncovers Broad Zonation along the Intestinal Villus Axis.

Author information

1
Department of Molecular Cell Biology, Weizmann Institute of Science, Rehovot, Israel. Electronic address: andreas.moor@weizmann.ac.il.
2
Department of Molecular Cell Biology, Weizmann Institute of Science, Rehovot, Israel.
3
Department of Veterinary Resources, Weizmann Institute of Science, Rehovot, Israel.
4
Department of Molecular Cell Biology, Weizmann Institute of Science, Rehovot, Israel. Electronic address: shalev.itzkovitz@weizmann.ac.il.

Abstract

The intestinal epithelium is a highly structured tissue composed of repeating crypt-villus units. Enterocytes perform the diverse tasks of absorbing a wide range of nutrients while protecting the body from the harsh bacterium-rich environment. It is unknown whether these tasks are spatially zonated along the villus axis. Here, we extracted a large panel of landmark genes characterized by transcriptomics of laser capture microdissected villus segments and utilized it for single-cell spatial reconstruction, uncovering broad zonation of enterocyte function along the villus. We found that enterocytes at villus bottoms express an anti-bacterial gene program in a microbiome-dependent manner. They next shift to sequential expression of carbohydrates, peptides, and fat absorption machineries in distinct villus compartments. Finally, they induce a Cd73 immune-modulatory program at the villus tips. Our approach can be used to uncover zonation patterns in other organs when prior knowledge of landmark genes is lacking.

KEYWORDS:

metabolism; mucosal immunology; single-cell transcriptomics; spatial transcriptomics; systems biology

PMID:
30270040
DOI:
10.1016/j.cell.2018.08.063

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