De novo CoA biosynthesis is required to maintain DNA integrity during development of the Drosophila nervous system.

Abstract:

:In a forward genetic screen in Drosophila melanogaster, aimed to identify genes required for normal locomotor function, we isolated dPPCS (the second enzyme of the Coenzyme A biosynthesis pathway). The entire Drosophila CoA synthesis route was dissected, annotated and additional CoA mutants were obtained (dPANK/fumble) or generated (dPPAT-DPCK). Drosophila CoA mutants suffer from neurodegeneration, altered lipid homeostasis and the larval brains display increased apoptosis. Also, de novo CoA biosynthesis is required to maintain DNA integrity during the development of the central nervous system. In humans, mutations in the PANK2 gene, the first enzyme in the CoA synthesis route, are associated with pantothenate kinase-associated neurodegeneration. Currently, the pathogenesis of this neurodegenerative disease is poorly understood. We provide the first comprehensive analysis of the physiological implications of mutations in the entire CoA biosynthesis route in an animal model system. Surprisingly, our findings reveal a major role of this conserved pathway in maintaining DNA and cellular integrity, explaining how impaired CoA synthesis during CNS development can elicit a neurodegenerative phenotype.

journal_name

Hum Mol Genet

journal_title

Human molecular genetics

authors

Bosveld F,Rana A,van der Wouden PE,Lemstra W,Ritsema M,Kampinga HH,Sibon OC

doi

10.1093/hmg/ddn105

subject

Has Abstract

pub_date

2008-07-01 00:00:00

pages

2058-69

issue

13

eissn

0964-6906

issn

1460-2083

pii

ddn105

journal_volume

17

pub_type

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