Ecdysone receptor expression and activity in adult Drosophila melanogaster.
J Insect Physiol
; 57(7): 899-907, 2011 Jul.
Article
em En
| MEDLINE
| ID: mdl-21507325
ABSTRACT
Disrupting components of the ecdysone/EcR/USP signaling pathway in insects leads to morphological defects and developmental arrest. In adult Drosophila melanogaster decreased EcR function affects fertility, lifespan, behavior, learning, and memory; however we lack a clear understanding of how EcR/USP expression and activity impacts these phenotypes. To shed light on this issue, we characterized the wild-type expression patterns and activity of EcR/USP in individual tissues during early adult life. EcR and usp were expressed in numerous adult tissues, but receptor activity varied depending on tissue type and adult age. Receptor activity did not detectably change in response to mating status, environmental stress, ecdysone treatment or gender but is reduced when a constitutively inactive ecdysone receptor is present. Since only a subset of adult tissues expressing EcR and usp contain active receptors, it appears that an important adult function of EcR/USP in some tissues may be repression of genes containing EcRE's.
Texto completo:
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Base de dados:
MEDLINE
Assunto principal:
Fatores de Transcrição
/
Receptores de Esteroides
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Proteínas de Insetos
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Proteínas de Drosophila
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Proteínas de Ligação a DNA
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Drosophila melanogaster
Idioma:
En
Ano de publicação:
2011
Tipo de documento:
Article