Nmdmc overexpression extends Drosophila lifespan and reduces levels of mitochondrial reactive oxygen species

Biochemical and Biophysical Research Communications
Suyeun YuJoong-Jean Park

Abstract

NAD-dependent methylenetetrahydrofolate dehydrogenase-methenyltetrahydrofolate cyclohydrolase (NMDMC) is a bifunctional enzyme involved in folate-dependent metabolism and highly expressed in rapidly proliferating cells. However, Nmdmc physiological roles remain unveiled. We found that ubiquitous Nmdmc overexpression enhanced Drosophila lifespan and stress resistance. Interestingly, Nmdmc overexpression in the fat body was sufficient to increase lifespan and tolerance against oxidative stress. In addition, these conditions coincided with significant decreases in the levels of mitochondrial ROS and Hsp22 as well as with a significant increase in the copy number of mitochondrial DNA. These results suggest that Nmdmc overexpression should be beneficial for mitochondrial homeostasis and increasing lifespan.

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Citations

May 16, 2020·Frontiers in Oncology·Zhiyuan Zhu, Gilberto Ka Kit Leung
Dec 15, 2020·NPJ Parkinson's Disease·Souvarish SarkarMel B Feany
Oct 9, 2020·Ageing Research Reviews·Andrey A ParkhitkoNorbert Perrimon

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