Accelerated cell cycles enable organ regeneration under developmental time constraints in the Drosophila hindgut.
Dev Cell
; 56(14): 2059-2072.e3, 2021 07 26.
Article
em En
| MEDLINE
| ID: mdl-34019841
ABSTRACT
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.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Regeneração
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Fase G1
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Regulação da Expressão Gênica no Desenvolvimento
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Proteínas de Drosophila
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Organogênese
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Trato Gastrointestinal
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Drosophila melanogaster
Limite:
Animals
Idioma:
En
Ano de publicação:
2021
Tipo de documento:
Article