NKRF in Cardiac Fibroblasts Protects against Cardiac Remodeling Post-Myocardial Infarction via Human Antigen R.

NKRF in Cardiac Fibroblasts Protects against Cardiac Remodeling Post-Myocardial Infarction via Human Antigen R.
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心肌成纤维细胞NKRF通过人抗原R保护心肌梗死后心脏重构

DOI:
10.1002/advs.202303283
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发表时间:
2023-10
期刊:
影响因子:
15.1
通讯作者:
Zhang, Cheng
Zhang, Cheng
中科院分区:
材料科学1区
文献类型:
--
作者:
Guo, Chenghu;Ji, Wei;Yang, Wei;Deng, Qiming;Zheng, Tengfei;Wang, Zunzhe;Sui, Wenhai;Zhai, Chungang;Yu, Fangpu;Xi, Bo;Yu, Xiao;Xu, Feng;Zhang, Qunye;Zhang, Wencheng;Kong, Jing;Zhang, Meng;Zhang, Cheng

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心肌梗塞(MI)仍然是全世界死亡的主要原因。心脏成纤维细胞(CF)在心脏中含量丰富,负责心肌梗死后的心脏修复。 NF-κB 抑制因子 (NKRF) 在各种特定基因的转录抑制中发挥重要作用。然而,NKRF 在 CF 中在 MI 后心脏修复中的作用机制仍不清楚。本研究通过建立 CF 特异性 NKRF 敲除 (NKRF-CKO) 小鼠模型,研究 NKRF 在心肌梗死后心脏重塑和功能障碍中的机制。 NKRF 表达在 CF 中下调,以响应体内病理性心脏重塑和体外 TNF-α。与同窝小鼠相比,NKRF-CKO 小鼠表现出较差的心功能和存活率,并且梗塞面积、心脏重量以及 MI 后 MMP2 和 MMP9 表达增加。 NKRF 通过下调 MMP2 和 MMP9 的表达来抑制 CF 的体外迁移和侵袭。从机制上讲,NKRF 通过 NF-κB 依赖性机制与 HuR 启动子内的经典负调控元件结合,抑制人类抗原 R (HuR) 转录。这降低了 HuR 靶向的 M mp 2 和 M mp 9 mRNA 稳定性。这项研究表明 NKRF 是病理性心脏重塑的治疗靶点。心肌梗塞(MI)是全球主要的死亡原因。心脏成纤维细胞(CF)对于心肌梗死后心脏修复至关重要。本研究探讨了 NF-κB 抑制因子 (NKRF) 在心肌梗死后重塑过程中 CF 中的作用,揭示其对 MMP2 和 MMP9 表达的调节以及对 CF 迁移和侵袭的影响。 NKRF 成为改善 MI 后心功能的潜在治疗靶点。
Myocardial infarction (MI) remains the leading cause of death worldwide. Cardiac fibroblasts (CFs) are abundant in the heart and are responsible for cardiac repair post‐MI. NF‐κB‐repressing factor (NKRF) plays a significant role in the transcriptional inhibition of various specific genes. However, the NKRF action mechanism in CFs remains unclear in cardiac repair post‐MI. This study investigates the NKRF mechanism in cardiac remodeling and dysfunction post‐MI by establishing a CF‐specific NKRF‐knockout (NKRF‐CKO) mouse model. NKRF expression is downregulated in CFs in response to pathological cardiac remodeling in vivo and TNF‐α in vitro. NKRF‐CKO mice demonstrate worse cardiac function and survival and increased infarct size, heart weight, and MMP2 and MMP9 expression post‐MI compared with littermates. NKRF inhibits CF migration and invasion in vitro by downregulating MMP2 and MMP9 expression. Mechanistically, NKRF inhibits human antigen R (HuR) transcription by binding to the classical negative regulatory element within the HuR promoter via an NF‐κB‐dependent mechanism. This decreases HuR‐targeted M mp 2 and M mp 9 mRNA stability. This study suggests that NKRF is a therapeutic target for pathological cardiac remodeling. Myocardial infarction (MI) is a leading global cause of mortality. Cardiac fibroblasts (CFs) are crucial for post‐MI cardiac repair. This study investigates the role of NF‐κB‐repressing factor (NKRF) in CFs during post‐MI remodeling, revealing its regulation of MMP2 and MMP9 expression and influence on CF migration and invasion. NKRF emerges as a potential therapeutic target to improve cardiac function post‐MI.
DOI: 10.1161/circresaha.116.309202
发表时间: 2016-09-30
影响因子: 20.1
作者:
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发表时间: 2003-09-01
影响因子: 4.8
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影响因子: 9.3
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发表时间: 2003-12-19
影响因子: 4.8
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DOI: 10.1161/circulationaha.113.001878
发表时间: 2013-07-23
期刊: Circulation
影响因子: 37.8
作者:
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通讯作者: Hill JA