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Open channel block of Kv1.5 channels by HMQ1611
http://hdl.handle.net/10422/00013447
http://hdl.handle.net/10422/00013447253ae19b-97ef-4d32-a227-1d3fd52b5980
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
fphar.2022.965086 (2.1 MB)
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This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
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| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2022-11-04 | |||||
| タイトル | ||||||
| タイトル | Open channel block of Kv1.5 channels by HMQ1611 | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| キーワード | ||||||
| 言語 | en | |||||
| 主題Scheme | Other | |||||
| 主題 | HMQ1611 | |||||
| キーワード | ||||||
| 言語 | en | |||||
| 主題Scheme | Other | |||||
| 主題 | Kv1.5 | |||||
| キーワード | ||||||
| 言語 | en | |||||
| 主題Scheme | Other | |||||
| 主題 | patch-clamp | |||||
| キーワード | ||||||
| 言語 | en | |||||
| 主題Scheme | Other | |||||
| 主題 | molecular docking | |||||
| キーワード | ||||||
| 言語 | en | |||||
| 主題Scheme | Other | |||||
| 主題 | open channel block | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
| 資源タイプ | journal article | |||||
| 著者 |
DONG, Chao
× DONG, Chao× LI, Jiawei× DING, Wei-guang× UEDA, Rika× XIE, Xiaolu× WU, Jie× MATSUURA, Hiroshi× HORIE, Minoru |
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| 著者別名 |
林, 維光
× 林, 維光× 上田, 梨加× 松浦, 博× 堀江, 稔 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Kv1.5 channels conduct the ultra-rapid delayed rectifier potassium current (I Kur). Pharmacological blockade of human Kv1.5 (hKv1.5) has been regarded as an effective treatment of re-entrant based atrial fibrillation, because Kv1.5 is highly expressed in human cardiac atria but scarcely in ventricles. The Kv1.5 blockade is also expected to be used in cancer therapeutics since Kv1.5 is overexpressed in some types of human tumors. Here, we investigated the blockade of hKv1.5 channels by HMQ1611, a symmetrical biphenyl derivative. hKv1.5 channels were heterologously expressed in Chinese hamster ovary cells. The effects of HMQ1611 on wild-type and 13 hKv1.5 mutant channels were examined using the whole-cell patch-clamp method, and molecular docking simulation was conducted to predict the docking position of HMQ1611 within Kv1.5 channels. We showed that HMQ1611 reversibly inhibited the hKv1.5 current in a concentration-dependent manner (IC50 = 2.07 μM). HMQ1611 blockade of hKv1.5 current developed with time during depolarizing voltage-clamp steps, and this blockade was also voltage-dependent with a steep increase over the voltage range for channel openings. HMQ1611 inhibition was significantly reduced in the T479A, T480A, V505A, I508A, L510A, V512A, and V516A hKv1.5 mutant channels. Molecular docking analysis predicted that V505, V512, and T480 were involved in the blocking action of HMQ1611 on hKv1.5 channels. These results suggest that HMQ1611 inhibits hKv1.5 currents as an open channel blocker. Amino acid residues located at the base of the selectivity filter (T479 and T480) and in the S6 segment (V505, I508, L510, V512, and V516) of hKv1.5 appear to constitute potential binding sites for HMQ1611. | |||||
| 書誌情報 |
en : Frontiers in Pharmacology 巻 13, 発行日 2022-09-16 |
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| 出版者 | ||||||
| 出版者 | Frontiers Media S.A. | |||||
| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 1663-9812 | |||||
| PMID | ||||||
| 関連タイプ | isIdenticalTo | |||||
| 識別子タイプ | PMID | |||||
| 関連識別子 | 36188606 | |||||
| PMCID | ||||||
| 識別子タイプ | URI | |||||
| 関連識別子 | http://www.ncbi.nlm.nih.gov/pmc/articles/pmc9524145/ | |||||
| 関連名称 | PMC9524145 | |||||
| DOI | ||||||
| 関連タイプ | isIdenticalTo | |||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | https://doi.org/10.3389/fphar.2022.965086 | |||||
| 関連名称 | 10.3389/fphar.2022.965086 | |||||
| 権利 | ||||||
| 権利情報 | © 2022 Dong, Li, Ding, Ueda, Xie, Wu, Matsuura and Horie. | |||||
| フォーマット | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | ||||||
| 著者版フラグ | ||||||
| 出版タイプ | VoR | |||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
| 資源タイプ | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | Journal Article | |||||
