Accelerated cell cycles enable organ regeneration under developmental time constraints in the Drosophila hindgut.

Journal Article (Journal Article)

Individual organ development must be temporally coordinated with development of the rest of the organism. As a result, cell division cycles in a developing organ occur on a relatively fixed timescale. Despite this, many developing organs can regenerate cells lost to injury. How organs regenerate within the time constraints of organism development remains unclear. Here, we show that the developing Drosophila hindgut regenerates by accelerating the mitotic cell cycle. This process is achieved by decreasing G1 length and requires the JAK/STAT ligand unpaired-3. Mitotic capacity is then terminated by the steroid hormone ecdysone receptor and the Sox transcription factor Dichaete. These two factors converge on regulation of a hindgut-specific enhancer of fizzy-related, a negative regulator of mitotic cyclins. Our findings reveal how the cell-cycle machinery and cytokine signaling can be adapted to accomplish developmental organ regeneration.

Full Text

Duke Authors

Cited Authors

  • Cohen, E; Peterson, NG; Sawyer, JK; Fox, DT

Published Date

  • July 26, 2021

Published In

Volume / Issue

  • 56 / 14

Start / End Page

  • 2059 - 2072.e3

PubMed ID

  • 34019841

Pubmed Central ID

  • PMC8319103

Electronic International Standard Serial Number (EISSN)

  • 1878-1551

Digital Object Identifier (DOI)

  • 10.1016/j.devcel.2021.04.029


  • eng

Conference Location

  • United States