| Item type |
文献 / Documents(1) |
| 公開日 |
2023-05-26 |
| アクセス権 |
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|
アクセス権 |
open access |
| 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 |
| 出版社版DOI |
|
|
|
識別子タイプ |
DOI |
|
|
関連識別子 |
https://doi.org/10.1253/circj.CJ-15-1276 |
|
|
言語 |
ja |
|
|
関連名称 |
10.1253/circj.CJ-15-1276 |
| 出版タイプ |
|
|
出版タイプ |
VoR |
|
出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
| タイトル |
|
|
タイトル |
Atrial Fibrillation-Mediated Upregulation of miR-30d Regulates Myocardial Electrical Remodeling of the G-Protein-Gated K+ Channel, IK.ACh |
|
言語 |
en |
| タイトル別表記 |
|
|
その他のタイトル |
Upregulation of miR-30d in Persistent AF |
|
言語 |
en |
| 著者 |
森島, 真幸
イワタ, エリコ
ナカダ, チサト
ツカモト, ヨシユキ
髙成, 広起
ミヤモト, シンジ
モリヤマ, マサツグ
オノ, カツシゲ
|
| 抄録 |
|
|
内容記述タイプ |
Abstract |
|
内容記述 |
Background: Atrial fibrillation (AF) begets AF in part due to atrial remodeling, the molecular mechanisms of which have not been completely elucidated. This study was conducted to identify microRNA(s) responsible for electrical remodeling in AF.
Methods and Results: The expression profiles of 1205 microRNAs, in cardiomyocytes from patients with persistent AF and from age-, gender-, and cardiac function-matched control patients with normal sinus rhythm, were examined by use of a microRNA microarray platform. Thirty-nine microRNAs differentially expressed in AF patients’ atria were identified, including miR-30d, as a candidate responsible for ion channel remodeling by in silico analysis. MiR-30d was significantly upregulated in cardiomyocytes from AF patients, whereas the mRNA and protein levels of CACNA1C/ Cav1.2 and KCNJ3/Kir3.1, postulated targets of miR-30d, were markedly reduced. KCNJ3/Kir3.1 expression was downregulated by transfection of the miR-30 precursor, concomitant with a reduction of the acetylcholine-sensitive inward-rectifier K+ current (IK.ACh). KCNJ3/Kir3.1 (but not CACNA1C/Cav1.2) expression was enhanced by the knockdown of miR-30d. The Ca2+ ionophore, A23187, induced a dose-dependent upregulation of miR-30d, followed by the suppression of KCNJ3 mRNA expression. Blockade of protein kinase C signaling blunted the [Ca2+]i-dependent downregulation of Kir3.1 via miR-30d.
Conclusions: The downward remodeling of IK.ACh is attributed, at least in part, to deranged Ca2+ handling, leading to the upregulation of miR-30d in human AF, revealing a novel post-transcriptional regulation of IK.ACh. |
|
言語 |
en |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Atrial fibrillation |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
IK.Ach |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
miRNA microarray |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
miR-30d |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Remodeling |
| 書誌情報 |
en : Circulation Journal
巻 80,
号 6,
p. 1346-1355,
発行日 2016-05-25
|
| 収録物ID |
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|
収録物識別子タイプ |
ISSN |
|
収録物識別子 |
13469843 |
| 収録物ID |
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|
収録物識別子タイプ |
ISSN |
|
収録物識別子 |
13474820 |
| 収録物ID |
|
|
収録物識別子タイプ |
NCID |
|
収録物識別子 |
AA11591968 |
| 出版者 |
|
|
出版者 |
The Japanese Circulation Society |
|
言語 |
en |
| EID |
|
|
識別子 |
330542 |
|
識別子タイプ |
URI |
| 言語 |
|
|
言語 |
eng |
circj_80_6_1346.pdf (2.1 MB)
