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HMGB1 通过调控 NF-B 调节自身免疫性脑脊髓炎的机制研究。

Research on the Mechanism of HMGB1 Regulating Autoimmune Encephalomyelitis by Regulating NF-B.

机构信息

The Third Department of Neurology, People's Hospital of Gaomi, Weifang, China.

Second Department of Encephalopathy, Weifang Hospital of Traditional Chinese Medicine, Weifang, China.

出版信息

J Healthc Eng. 2022 Apr 11;2022:9900916. doi: 10.1155/2022/9900916. eCollection 2022.

Abstract

BACKGROUND

Autoimmune encephalomyelitis is a clinical condition in which memory and cognition is affected badly and is also associated with lower levels of consciousness or even coma in worse scenarios. It is a noninfectious condition which involves immune oriented inflammation.

OBJECTIVE

The study's goal was to figure out what was causing the problem HMGB1 involved in regulating the autoimmune encephalomyelitis by regulating NF-B.

MATERIALS AND METHODS

The expressions of HMGB1, miR-129-5p, and TLR4/NF-B signalling pathway-related proteins were measured by qRT-PCR. To explore the differences among its control, models, and all groups, histopathology, immunohistochemistry, and immunofluorescence tests were performed.

RESULTS

According to the findings, miR-129-5p is in charge of suppressing HMGB1 production and inhibiting the TLR4/NF-B signalling pathway. On development of autoimmune encephalomyelitis, neurons in the hippocampus area got injured in the miR-129-5p inhibitors class. In the miR-129-5p inhibitor class, expression of miR-129-5p reduced and HMGB1 elevated, increasing neuronal inflammation and damage. Impairment in the hippocampus, on the either side, was shown to be reduced in HMGB1 shRNA, miR-129-5p mimics, and TLR4/NF-B classes.

CONCLUSION

According to the study's findings, there is indeed a link among increased miR-129-5p and decreased HMGB1 expression and also suppression of the TLR4/NF-B signal transduction pathway in autoimmune encephalomyelitis in the miR-129-5p inhibitors group. As a result, we may assume the autoimmune disease illness has progressed once concentrations of HMGB1, TLR4/NF-B, and miR-129-5p have decreased.

摘要

背景

自身免疫性脑脊髓炎是一种严重影响记忆和认知功能的临床病症,在更严重的情况下还会导致意识水平下降,甚至昏迷。它是一种非传染性疾病,涉及免疫导向炎症。

目的

本研究旨在通过调节 NF-B 来研究 HMGB1 调节自身免疫性脑脊髓炎的机制。

材料和方法

通过 qRT-PCR 测量 HMGB1、miR-129-5p 和 TLR4/NF-B 信号通路相关蛋白的表达。通过组织病理学、免疫组织化学和免疫荧光试验来探索其对照组、模型组和各组之间的差异。

结果

研究结果表明,miR-129-5p 负责抑制 HMGB1 的产生并抑制 TLR4/NF-B 信号通路。在自身免疫性脑脊髓炎的发展过程中,海马区的神经元在 miR-129-5p 抑制剂组中受到损伤。在 miR-129-5p 抑制剂组中,miR-129-5p 的表达减少,HMGB1 升高,导致神经元炎症和损伤增加。在 HMGB1 shRNA、miR-129-5p 模拟物和 TLR4/NF-B 组中,两侧海马区的损伤均减少。

结论

根据研究结果,在 miR-129-5p 抑制剂组中,miR-129-5p 的表达增加和 HMGB1 表达降低,以及 TLR4/NF-B 信号转导通路的抑制之间确实存在关联。因此,我们可以假设一旦 HMGB1、TLR4/NF-B 和 miR-129-5p 的浓度降低,自身免疫性疾病就会进展。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9c06/9017456/ab1b97132703/JHE2022-9900916.001.jpg

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