The endogenous siRNA pathway in Drosophila impacts stress resistance and lifespan by regulating metabolic homeostasis
► We identified proteins affected by defective endo-siRNA production in dcr-2 mutants. ► Most of these changes were associated with genes involved in metabolic processes. ► dcr-2 Mutants were hypersensitive to various stresses and had reduced lifespan. ► dcr-2 Mutants had abnormal metabolic homeosta...
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Veröffentlicht in: | FEBS letters 2011-10, Vol.585 (19), p.3079-3085 |
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Sprache: | eng |
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Zusammenfassung: | ► We identified proteins affected by defective endo-siRNA production in dcr-2 mutants. ► Most of these changes were associated with genes involved in metabolic processes. ► dcr-2 Mutants were hypersensitive to various stresses and had reduced lifespan. ► dcr-2 Mutants had abnormal metabolic homeostasis.
Small non-coding RNAs regulate gene expression in a sequence-specific manner. In Drosophila, Dicer-2 (Dcr-2) functions in the biogenesis of endogenous small interfering RNAs (endo-siRNAs). We identified 21 distinct proteins that exhibited a ⩾1.5-fold change as a consequence of loss of dcr-2 function. Most of these were metabolic genes implicated in stress resistance and aging. dcr-2 Mutants had reduced lifespan and were hypersensitive to oxidative, endoplasmic reticulum, starvation, and cold stresses. Furthermore, loss of dcr-2 function led to abnormal lipid and carbohydrate metabolism. Our results suggest roles for the endo-siRNA pathway in metabolic regulation and defense against stress and aging in Drosophila. |
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ISSN: | 0014-5793 1873-3468 |
DOI: | 10.1016/j.febslet.2011.08.034 |