Endogenous coenzyme Q content and exogenous bioavailability in D. melanogaster

Area of Science:

• Biogerontology
• Molecular Biology
• Biochemistry

Background:

• Cellular Coenzyme Q (CoQ) levels are affected by development and aging.
• CoQ is implicated in various pathological and physiological conditions.
• Drosophila melanogaster is a valuable model organism for aging research.

Purpose of the Study:

• To investigate Coenzyme Q (CoQ) status across the lifespan of Drosophila melanogaster.
• To analyze CoQ distribution in different body segments and life stages.
• To evaluate the effects of CoQ supplementation on CoQ levels and longevity.

Main Methods:

• Quantification of Coenzyme Q9 (CoQ₉) and CoQ isoforms in various fly tissues.
• Analysis of CoQ distribution across different life stages and sexes.
• Administration of CoQ₉ and CoQ₁₀ supplementation at varying concentrations and durations.

Main Results:

• CoQ₉ was the predominant CoQ isoform throughout the fly's life cycle, with highest concentrations in the thorax.
• CoQ distribution exhibited sex- and segment-specific patterns during aging.
• Supplementation with 75 μM CoQ₁₀ effectively modulated CoQ status in a segment- and sex-specific manner.
• Lifelong supplementation with 75 μM CoQ₁₀ did not impact fly longevity.

Conclusions:

• CoQ homeostasis is dynamic during aging in Drosophila melanogaster, influenced by sex and body region.
• CoQ₁₀ supplementation can alter CoQ levels but does not extend lifespan in this model.
• Further research is needed to understand the complex role of CoQ in aging and age-related diseases.