Oxidized Low-Density Lipoprotein-Binding Specificity of the Asp-Hemolysin-Related Synthetic Peptides from Aspergillus fumigatus
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- Kumagai Takeshi
- Department of Environmental Health Science, Tohoku Pharmaceutical University
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- Tsutsumi Hiromu
- Department of Environmental Health Science, Tohoku Pharmaceutical University
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- Ogawa Norihiro
- Department of Environmental Health Science, Tohoku Pharmaceutical University
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- Naito Saori
- Department of Environmental Health Science, Tohoku Pharmaceutical University
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- Ebina Keiichi
- Department of Environmental Health Science, Tohoku Pharmaceutical University
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- Yokota Katsushi
- Department of Environmental Health Science, Tohoku Pharmaceutical University
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- Nagata Kiyoshi
- Department of Environmental Health Science, Tohoku Pharmaceutical University
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Oxidatively modified low-density lipoprotein (OxLDL) is present in atherosclerotic lesions and has been proposed to play an important role in atherogenesis. In the present study, in order to clarify the structure-binding activity relationship of Asp-hemolysin-related peptides to OxLDL, we investigated the interaction between Asp-hemolysin-related peptides consisting of 4 to 29 amino acid residues and OxLDL. The incubation of OxLDL with each Asp-hemolysin-related peptide resulted in the formation of an Asp-hemolysin/OxLDL complex. In particular, the tetrapeptide, YKDG (P-4), bound to OxLDL and inhibited the OxLDL-induced macrophage proliferation in a dose-dependent manner. Furthermore, we demonstrated that lysophosphatidylcholine (LysoPC) extracted from OxLDL inhibited the binding of P-21 to OxLDL in a dose-dependent manner and synthetic [14C]LysoPC bound to P-21. We propose here that the YKDG region is one of the important sites for the binding of these peptides to OxLDL, and LysoPC as a typical lipid moiety of OxLDL is attributed to the binding of OxLDL to these peptides.
収録刊行物
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- Biological & Pharmaceutical Bulletin
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Biological & Pharmaceutical Bulletin 29 (11), 2181-2186, 2006
公益社団法人 日本薬学会
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詳細情報 詳細情報について
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- CRID
- 1390282679604671104
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- NII論文ID
- 110004840388
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- NII書誌ID
- AA10885497
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- ISSN
- 13475215
- 09186158
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- NDL書誌ID
- 8515817
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
- Crossref
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