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Effects of cold-exposure and subsequent recovery on cellular proliferation with influence of 20-hydroxyecdysone in a lepidopteran cell line (IAL-PID2) Inra
Lalouette, L.; Renault, D.; Ravaux, J.; Siaussat, D..
In developing insects, the peak level of 20-hydroxyecdysone (20E) initiates a decrease in cyclin expression, which subsequently triggers an arrest of cellular proliferation and the start of differentiation, finally culminating in the moult. We investigated the impact of cold-exposure (4 degrees C) and recovery (26 degrees C) on the cell cycle activity of the Plodia interpunctella Lepidoptera cell line IAL-PID2 and on the expression of B-type cyclin (PcycB), ecdysone receptor (B1-isoform; PiEcR-B1), and Hsc70 (PiHsc70) mRNA. Cold-exposure significantly reduced expression of these mRNAs, while their levels increased to above control values during subsequent recovery at the normal growth temperature. When cold-exposed cells were returned to 26 degrees C, cell...
Tipo: Journal Article Palavras-chave: FROID; DEVELOPPEMENT CELLULAIRE; EFFET DE LA TEMPERATURE; LEPIDOPTERA; RECEPTEUR; EXPRESSION DES GENES; ARN MESSAGER; PROTEINE; HORMONE STEROIDE; PLODIA INTERPUNCTELLA; CARTOGRAPHIE; ELECTROPHORESE; MITE; PYRALIDAE PROLIFERATION; 20-HYDROXYECDYSONE; IAL-PID2 CELLS; STEROID HORMONE RECEPTOR SUPERFAMILY; HEAT SHOCK PROTEINS 70; COLD SHOCK.
Ano: 2010 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD2010eed35965&uri=/notices/prodinra1/2010/09/
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