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PMID: 20147375 Published · ppublish English Journal Article Research Support, Non-U.S. Gov't

Transcriptional control of stem cell maintenance in the Drosophila intestine.

Development (Cambridge, England) ·Vol. 137 ·No. 5 ·2010-03-00 ·Pages 705-14

Bardin AJ, Perdigoto CN, Southall TD, Brand AH, Schweisguth F

Abstract

Adult stem cells maintain tissue homeostasis by controlling the proper balance of stem cell self-renewal and differentiation. The adult midgut of Drosophila contains multipotent intestinal stem cells (ISCs) that self-renew and produce differentiated progeny. Control of ISC identity and maintenance is poorly understood. Here we find that transcriptional repression of Notch target genes by a Hairless-Suppressor of Hairless complex is required for ISC maintenance, and identify genes of the Enhancer of split complex [E(spl)-C] as the major targets of this repression. In addition, we find that the bHLH transcription factor Daughterless is essential to maintain ISC identity and that bHLH binding sites promote ISC-specific enhancer activity. We propose that Daughterless-dependent bHLH activity is important for the ISC fate and that E(spl)-C factors inhibit this activity to promote differentiation.

MeSH Terms
Animals Animals, Genetically Modified Basic Helix-Loop-Helix Transcription Factors/genetics,metabolism,physiology Cell Differentiation/genetics Cell Proliferation Drosophila/genetics,metabolism,physiology Drosophila Proteins/genetics,metabolism,physiology Enteroendocrine Cells/metabolism,physiology Female Gene Expression Regulation, Developmental Intestinal Mucosa/metabolism Intestines/physiology Models, Biological Repressor Proteins/genetics,metabolism,physiology Stem Cells/metabolism,physiology Transcription Factors/genetics,metabolism,physiology Transcription, Genetic/physiology
Chemicals
Basic Helix-Loop-Helix Transcription Factors Da protein, Drosophila Drosophila Proteins E(spl)m7-HLH protein, Drosophila Repressor Proteins Su(H) protein, Drosophila Transcription Factors H protein, Drosophila
Authors & Affiliations
5 authors, click to expand affiliations / ORCID
Bardin Allison J
Institut Pasteur, CNRS URA2578, 75724 Paris Cedex 15, France. abardin@pasteur.fr
Perdigoto Carolina N
Southall Tony D
Brand Andrea H
Schweisguth François
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Article Info
Journal
Development (Cambridge, England)
Abbr.
Development
ISSN
1477-9129
Published
2010-03-00
Pages
705-14
Language
English
Region
England
NLM ID
8701744
PMCID
PMC2827683
Subset
IM
Grants
Wellcome Trust · 068055 · United Kingdom
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