RNA interference of the clock gene period disrupts circadian rhythms in the expression of genes related to insecticide resistance in the chagas disease vector Triatoma infestans (Hemiptera: Reduviidae)
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View abstract on PubMed
Summary
This summary is machine-generated.The biological clock regulates daily gene expression in the insect Triatoma infestans, impacting insecticide resistance. Silencing the period gene disrupted rhythms in key detoxification genes, confirming clock control.
Area Of Science
- * Molecular biology
- * Entomology
- * Biochemistry
Background
- * Pyrethroid resistance in Triatoma infestans is linked to elevated oxidative metabolism via cytochromes P450.
- * Nicotinamide adenine dinucleotide phosphate (NADPH) cytochrome P450 reductase (CPR) is essential for P450 function.
- * Daily variations in CPR and CYP4EM7 gene expression suggest regulation by an endogenous biological clock.
Purpose Of The Study
- * To investigate the involvement of the biological clock in regulating daily fluctuations of CPR and CYP4EM7 gene expression.
- * To determine the effect of silencing the clock gene period (per) using RNA interference (RNAi) on gene expression patterns.
Main Methods
- * RNA interference (RNAi) was used to silence the period (per) gene in Triatoma infestans.
- * Quantitative analysis of per, CPR, and CYP4EM7 gene expression levels at various time points post-silencing.
- * Assessment of rhythmicity in gene expression profiles.
Main Results
- * Silencing of the per gene reduced its expression across all analyzed time points.
- * The characteristic rhythm in per mRNA transcriptional expression was abolished.
- * Per gene silencing led to a loss of rhythmicity in the expression profiles of CPR and CYP4EM7 genes.
Conclusions
- * The biological clock, regulated by the period gene, is involved in controlling daily expression of CPR and CYP4EM7.
- * Disruption of the biological clock impacts genes associated with insecticide resistance in Triatoma infestans.
- * These findings highlight the role of circadian rhythms in insect physiology and insecticide resistance mechanisms.
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