The Drosophila midgut: A model for stem cell driven tissue regeneration

Elena M. Lucchetta, Benjamin Ohlstein

Research output: Contribution to journalArticlepeer-review

43 Scopus citations

Abstract

The Drosophila and mammalian digestive systems bear striking similarities in genetic control and cellular composition, and the Drosophila midgut has emerged as an amenable model for dissecting the mechanisms of tissue homeostasis. The Drosophila midgut is maintained by multipotent intestinal stem cells (ISCs) that give rise to all cell types in the intestinal epithelium and are required for long-term tissue homeostasis. ISC proliferation rate increases in response to a myriad of chemical and bacterial insults through the release of JAK-STAT and EGFR ligands from dying enterocytes that activate the JAK-STAT and EGFR pathways in ISCs. The Hippo and JNK pathways converge upon JAK-STAT and EGFR signaling, presumably in response to specific stresses, and JNK and insulin signaling have been shown to be critical in response to age-related stresses. This review details these emerging mechanisms of tissue homeostasis and the proliferative response of ISCs to epithelial damage, environmental stresses, and aging.

Original languageEnglish (US)
Pages (from-to)781-788
Number of pages8
JournalWiley Interdisciplinary Reviews: Developmental Biology
Volume1
Issue number5
DOIs
StatePublished - Sep 2012
Externally publishedYes

ASJC Scopus subject areas

  • Molecular Biology
  • Developmental Biology
  • Cell Biology

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