Cilostazol induces mitochondrial fatty acid β-oxidation in C2C12 myotubes.

Abstract:

:Cilostazol is a drug licensed for the treatment of intermittent claudication. Its main action is to elevate intracellular levels of cyclic monophosphate (cAMP) by inhibiting the activity of type III phosphodiesterase, a cAMP-degrading enzyme. The effects of cilostazol on fatty acid oxidation (FAO) are as yet unknown. In this study, we report that cilostazol can elevate complete FAO and decrease both triacylglycerol (TAG) accumulation and TAG secretion. This use of cilostazol treatment increases expression of PGC-1α and, subsequently, its target genes, such as ERRα, NOR1, CD36, CPT1, MCAD, and ACO. Expression of these factors is linked to fatty acid β-oxidation but this effect is inhibited by H-89, a specific inhibitor of the PKA/CREB pathway. Importantly, knockdown of PGC-1α using siRNA abolished the effects of cilostazol in fatty acid oxidation (FAO) and TAG metabolism. These findings suggested that the PKA/CREB/PGC-1α pathway plays a critical role in cilostazol-induced fatty acid oxidation and TAG metabolism.

authors

Wang B,Zhu L,Sui S,Sun C,Jiang H,Ren D

doi

10.1016/j.bbrc.2014.04.028

subject

Has Abstract

pub_date

2014-05-09 00:00:00

pages

441-5

issue

3

eissn

0006-291X

issn

1090-2104

pii

S0006-291X(14)00659-7

journal_volume

447

pub_type

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