Journal
CELL STEM CELL
Volume 25, Issue 3, Pages 342-+Publisher
CELL PRESS
DOI: 10.1016/j.stem.2019.07.008
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Funding
- Wellcome Trust
- HFSP [LT000092/2016-L]
- Medical Research Council, UK
- European Research Council
- Deutsche Krebshilfe [111350]
- ERC [639050]
- Basic Science Research Program, the National Research Foundation, S. Korea [2017R1C1B2007843, 2017M3A9B6073099, 2017M3C7A1048448]
- Wellcome Trust [098357/Z/12/Z]
- Royal Society [RP\R1\180165]
- MRC
- European Research Council (ERC) [639050] Funding Source: European Research Council (ERC)
- National Research Foundation of Korea [2017M3A9B6073099, 2017R1C1B2007843] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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The gastric corpus epithelium is the thickest part of the gastrointestinal tract and is rapidly turned over. Several markers have been proposed for gastric corpus stem cells in both isthmus and base regions. However, the identity of isthmus stem cells (IsthSCs) and the interaction between distinct stem cell populations is still under debate. Here, based on unbiased genetic labeling and biophysical modeling, we show that corpus glands are compartmentalized into two independent zones, with slow-cycling stem cells maintaining the base and actively cycling stem cells maintaining the pit-isthmus-neck region through a process of punctuated neutral drift dynamics. Independent lineage tracing based on Stmn1 and Ki67 expression confirmed that rapidly cycling IsthSCs maintain the pit-isthmus-neck region. Finally, single-cell RNA sequencing (RNA-seq) analysis is used to define the molecular identity and lineage relation-ship of a single, cycling, IsthSC population. These observations define the identity and functional behavior of IsthSCs.
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