<Poster>15-Deoxy-Δ^12,14-prostaglandin J_2 modifi es profi les of nuclear TDP-43 protein through its direct binding : Implication for the pathogenesis of TDP-43 proteinopathy
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- タイトル別名
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- 15 deoxy D 12 14 prostaglandin J2 modifies profiles of nuclear TDP 43 protein through its direct binding implication for the pathogenesis of TDP 43 proteinopathy
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TDP-43 proteinopathy (amyotrophic lateral sclerosis and frontotemporal lobar degeneration with ubiquitin-positive inclusions) is a newly categorized group of neurodegenerative disorders characterized by abnormal accumulation and mislocalization of nuclear TDP-43 protein in the neuronal cytoplasm. 15-deoxy-Δ12,14-prostaglandin J2 (15d-PGJ2) is non-enzymatically produced from PGD2, and plays roles in infl ammation and oxidative stress responses. Indeed, 15d-PGJ2 is up-regulated in the spinal motor neurons in ALS. In this study, biochemical and fluorescent staining analyses showed that 15d-PGJ2 modifi es expression, solubility, and subcellular localization of TDP-43. This alteration was at least partly related to a cyclopentenone ring structure containing an electrophilic carbon of 15d-PGJ2, because 15d-PGJ2 analogue, which lacks an cyclopentenone ring structure, had almost no eff ect on TDP-43 protein. Finally in vitro binding experiment indicated that 15d-PGJ2 is covalently bound to TDP-43 protein. These fi ndings suggest that a sustained high level of 15d-PGJ2 is involved in the pathogenesis of neurodegenerative disorders related to abnormal TDP-43 protein.
弘前医学. 61(Suppl.), 2010, p.S204-S210
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- 弘前医学
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弘前医学 61 (Supplement), S204-S210, 2010-07-08
弘前大学大学院医学研究科・弘前医学会
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詳細情報 詳細情報について
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- CRID
- 1050001201685692544
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- NII論文ID
- 110007617469
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- NII書誌ID
- AN00211444
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- ISSN
- 04391721
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- HANDLE
- 10129/3689
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- NDL書誌ID
- 10784832
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- 本文言語コード
- en
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- 資料種別
- journal article
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- NDL
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