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Published on: April 1, 2021
Clonal Evolution of Stem Cells in the Gastrointestinal Tract
Juergen Fink1, Bon-Kyoung Koo2
1Department of Genetics, Wellcome Trust-Medical Research Council Stem Cell Institute, University of Cambridge, Cambridge, UK.
None:
The field of gastrointestinal epithelial stem cells is a rapidly developing area of adult stem cell research. The discovery of Lgr5(+) intestinal stem cells has enabled us to study many hidden aspects of the biology of gastrointestinal adult stem cells. Marked by Lgr5 and Troy, several novel endodermal stem cells have been identified in the gastrointestinal tract. A precise working model of stem cell propagation, dynamics, and plasticity has been revealed by a genetic labeling method, termed lineage tracing. This chapter introduces the reidentification of crypt base columnar cells as Lgr5(+) stem cells in the intestine. Subsequently, it will discuss dynamic clonal evolution and cellular plasticity in the intestinal stem cell zone, as well as in stem cell zones of stomach glands.
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