Molecular mechanism of age-related muscle atrophy: The role of deacetylation against muscle atrophy
Project/Area Number |
24700753
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Research Category |
Grant-in-Aid for Young Scientists (B)
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Allocation Type | Multi-year Fund |
Research Field |
Applied health science
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Research Institution | Nagasaki University (2013) The University of Tokushima (2012) |
Principal Investigator |
HIRASAKA Katsuya 長崎大学, 大学院水産・環境科学総合研究科, 助教 (70432747)
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Project Period (FY) |
2012-04-01 – 2014-03-31
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Project Status |
Completed (Fiscal Year 2013)
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Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2013: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2012: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
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Keywords | 加齢 / ユビキチンリガーゼ / 脱アセチル化 |
Research Abstract |
Proinflammatory cytokines are factors that induce ubiquitin-proteasome-dependent proteolysis in skeletal muscle, causing age-related muscle atrophy. However, a molecular mechanism of muscle atrophy caused by aging remains unclear. In the present study, we examined the role of ubiquitin-proteasome-dependent proteolysis on aging. In C2C12 myotubes, TNF-alpha treatment markedly elevated the expression of the muscle-specific ubiquitin ligase MuRF1, leading to myotube atrophy. We found that MuRF1 promoter activity was mediated by acetylation of p65, a subunit of NFkB, a downstream target of the TNF-alpha signaling pathway. In addition, the acetylation of p65 was observed in skeletal muscle of aged mice. Interestingly, we found that MuRF1 deficient mice were resistant to aged-related muscle atrophy. Thus, the inhibition of NFkB-MuRF1 signaling by deacetylation could provide a novel therapeutic approach against age-related muscle atrophy.
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Report
(3 results)
Research Products
(28 results)
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[Journal Article] Isoflavones derived from soy beans prevent MuRF1-mediated muscle atrophy in C2C12 myotubes through SIRT1 activation2013
Author(s)
Hirasaka K, Maeda T, Ikeda C, Haruna M, Kohno S, Abe T, Ochi A, Mukai R, Oarada M, Teshima-Kondo S, Ohno A, Okumura Y, Terao J, Nikawa T
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Journal Title
J Nutr Sci Vitaminol
Volume: 59(4)
Pages: 317-324
NAID
URL
Related Report
Peer Reviewed
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[Journal Article] Soy Glycinin Contains a Functional Inhibitory Sequence against Muscle Atrophy -Associated Ubiquitin Ligase Cbl-b2013
Author(s)
Abe T, Kohno S, Yama T, Ochi A, Suto T, Hirasaka K, Ohno A, Teshima-Kondo S, Okumura Y, Oarada M, Choi I, Mukai R, Terao J, Nikawa T
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Journal Title
Int J Endocrinol
Volume: 2013
Pages: 907565-907565
DOI
Related Report
Peer Reviewed
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[Journal Article] Isoflavones derived from soy beans prevent MuRF1-mediated muscle atrophy in C2C12 myotubes through SIRT1 activation.2013
Author(s)
Hirasaka K, Maeda T, Ikeda C, Haruna M, Kohno S, Abe T, Ochi A, Mukai R, Oarada M, Teshima-Kondo S, Ohno A, Okumura Y, Terao J, Nikawa T.
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Journal Title
J Nutr Sci Vitaminol
Volume: 59
Pages: 317-324
NAID
Related Report
Peer Reviewed
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[Journal Article] An intracellular fragment of osteoactivin formed by ectodomain shedding translocated to the nucleoplasm and bound to RNA binding proteins2012
Author(s)
Utsunomiya K, Owaki K, Okumura Y, Yano M, Oto T, Suzuki E, Tamura S, Abe T, Kohno S, Ohno A, Hirasaka K, Teshima-Kondoh S, Nikawa T
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Journal Title
Biosci Biotechnol Biochem
Volume: 76(12)
Pages: 2225-2229
NAID
URL
Related Report
Peer Reviewed
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[Journal Article] Unloading stress disturbs muscle regeneration through perturbed recruitment and function of macrophages2012
Author(s)
Kohno S, Yamashita Y, Abe T, Hirasaka K, Oarada M, Ohno A, Teshima-Kondo S, Higashibata A, Choi I, Mills EM, Okumura Y, Terao J, Nikawa T
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Journal Title
J Appl Physiol
Volume: 112(10)
Pages: 1773-1782
Related Report
Peer Reviewed
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[Presentation] サルコペニアにおけるミトコンドリア内カルシウム取り込み2013
Author(s)
平坂勝也, Edward.M Mills, 池田千佳, 春名真里江, 前田翼安, 倍知紀, 宇都宮健郎, 越智ありさ, 河野尚平, 真板綾子, 近藤茂忠, 奥村裕司, 二川健
Organizer
第67回日本栄養・食糧学会大会
Place of Presentation
名古屋大学東山キャンパス(名古屋市)
Year and Date
2013-05-26
Related Report
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[Presentation] The role of uncouplingprotein 3 on oxidative stress-related muscle atorophy2012
Author(s)
Katsuya Hirasaka, Hironori Yamamoto, Edward Mills, Shohei Kohno, Yomoki Abe, Chika Ikeda, Tasuku Maeda, Shigetada Kondo, Ayaki Ohno, Yuushi Okumura, Takeshi Nikawa
Organizer
The American Society for Bone and Mineral Research(ASBMR) Tropical Meeting, 2012
Place of Presentation
The Westin Kansas City at Crown Center (カンザスシティ、USA)
Year and Date
2012-07-17
Related Report
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