Molecular Behavior of HMGB1 in the Cochlea Following Noise Exposure and in vitro.

Molecular Behavior of HMGB1 in the Cochlea Following Noise Exposure and in vitro.
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噪声暴露后和体外耳蜗中 HMGB1 的分子行为

DOI:
10.3389/fcell.2021.642946
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发表时间:
2021
影响因子:
5.5
通讯作者:
Feng Y
Feng Y
中科院分区:
生物学2区
文献类型:
--
作者:
Xiao L;Sun Y;Liu C;Zheng Z;Shen Y;Xia L;Yang G;Feng Y

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噪声性听力损失(NIHL)的特征是内耳的细胞损伤,炎症会加剧这种损伤。高迁移率族蛋白1(HMGB 1)是一种典型的损伤相关分子模式(DAMP),根据其细胞定位,其作为炎症介质或细胞间信使发挥作用。阻断或调节HMGB 1为改善NIHL提供了一种有吸引力的方法。然而,精确的治疗干预必须建立在对它的动态分子分布和在耳蜗发病机制中的作用的更深入了解的基础上。在这里,我们已经提出了时空动态的HMGB 1的表达,表现出在特定的耳蜗区域和细胞噪声暴露后的分布变异性。在基因操作后,我们进一步研究了HEI-OC 1细胞中HMGB 1的特性。在H2 O2刺激后,在HMGB 1敲低组中观察到更高的细胞活力,表明HMGB 1对细胞寿命可能有负面影响。总之,这项研究表明,HMGB 1参与NIHL发病机制,其分子生物学具有重要而微妙的影响,保留了药物干预的翻译潜力。
Noise-induced hearing loss (NIHL) is characterized by cellular damage to the inner ear, which is exacerbated by inflammation. High-mobility group box 1 (HMGB1), a representative damage-associated molecular pattern (DAMP), acts as a mediator of inflammation or an intercellular messenger according to its cellular localization. Blocking or regulating HMGB1 offers an attractive approach in ameliorating NIHL. However, the precise therapeutic intervention must be based on a deeper understanding of its dynamic molecular distribution and function in cochlear pathogenesis after acoustic trauma. Here, we have presented the spatiotemporal dynamics of the expression of HMGB1, exhibiting distribution variability in specific cochlear regions and cells following noise exposure. After gene manipulation, we further investigated the characteristics of cellular HMGB1 in HEI-OC1 cells. The higher cell viability observed in the HMGB1 knocked-down group after stimulation with H2O2 indicated the possible negative effect of HMGB1 on cellular lifespan. In conclusion, this study demonstrated that HMGB1 is involved in NIHL pathogenesis and its molecular biology has essential and subtle influences, preserving a translational potential for pharmacological intervention.
内耳感觉毛细胞的凋亡。
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