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Cardiolipin Synthesis in Skeletal Muscle Is Rhythmic and Modifiable by Age and Diet
Joint Authors
Mileykovskaya, Eugenia
Nohara, Kazunari
Kim, Eunju
Wirianto, Marvin
Dowhan, William
Chen, Zheng
Yoo, Seung-Hee
Source
Oxidative Medicine and Cellular Longevity
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-12, 12 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-06-15
Country of Publication
Egypt
No. of Pages
12
Main Subjects
Abstract EN
Circadian clocks regulate metabolic processes in a tissue-specific manner, which deteriorates during aging.
Skeletal muscle is the largest metabolic organ in our body, and our previous studies highlight a key role of circadian regulation of skeletal muscle mitochondria in healthy aging.
However, a possible circadian regulation of cardiolipin (CL), the signature lipid class in the mitochondrial inner membrane, remains largely unclear.
Here, we show that CL levels oscillate during the diurnal cycle in C2C12 myotubes.
Disruption of the Ror genes, encoding the ROR nuclear receptors in the secondary loop of the circadian oscillator, in C2C12 cells was found to dampen core circadian gene expression.
Importantly, several genes involved in CL synthesis, including Taz and Ptpmt1, displayed rhythmic expression which was disrupted or diminished in Ror-deficient C2C12 cells.
In vivo studies using skeletal muscle tissues collected from young and aged mice showed diverse effects of the clock and aging on the oscillatory expression of CL genes, and CL levels in skeletal muscle were enhanced in aged mice relative to young mice.
Finally, consistent with a regulatory role of RORs, Nobiletin, a natural agonist of RORs, was found to partially restore transcripts levels of CL synthesis genes in aged muscle under a dietary challenge condition.
Together, these observations highlight a rhythmic CL synthesis in skeletal muscle that is dependent on RORs and modifiable by age and diet.
American Psychological Association (APA)
Nohara, Kazunari& Kim, Eunju& Wirianto, Marvin& Mileykovskaya, Eugenia& Dowhan, William& Chen, Zheng…[et al.]. 2020. Cardiolipin Synthesis in Skeletal Muscle Is Rhythmic and Modifiable by Age and Diet. Oxidative Medicine and Cellular Longevity،Vol. 2020, no. 2020, pp.1-12.
https://search.emarefa.net/detail/BIM-1204800
Modern Language Association (MLA)
Nohara, Kazunari…[et al.]. Cardiolipin Synthesis in Skeletal Muscle Is Rhythmic and Modifiable by Age and Diet. Oxidative Medicine and Cellular Longevity No. 2020 (2020), pp.1-12.
https://search.emarefa.net/detail/BIM-1204800
American Medical Association (AMA)
Nohara, Kazunari& Kim, Eunju& Wirianto, Marvin& Mileykovskaya, Eugenia& Dowhan, William& Chen, Zheng…[et al.]. Cardiolipin Synthesis in Skeletal Muscle Is Rhythmic and Modifiable by Age and Diet. Oxidative Medicine and Cellular Longevity. 2020. Vol. 2020, no. 2020, pp.1-12.
https://search.emarefa.net/detail/BIM-1204800
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1204800