相关实验视频

Updated: Sep 13, 2025

An Adoptive Transfer Model of Rheumatoid Arthritis in Mice

An Adoptive Transfer Model of Rheumatoid Arthritis in Mice

Published on: June 6, 2025

RRM2的M6A修饰驱动了B细胞在原发性Sjögren综合征中的过度活跃

Yiying Yang¹, Ke Liu², Huali Zhang²

¹Department of Rheumatology and Immunology, Xiangya Hospital, Department of Pathophysiology, Xiangya School of Basic Medicine Science, Central South University, Changsha, Hunan, China; Sepsis Translational Medicine Key Lab of Hunan Province, Changsha, Hunan, China; National Medicine Functional Experimental Teaching Center, Central South University, Changsha, Hunan, China; Postdoctoral Research Station of Biology, Xiangya School of Basic Medicine Science, Central South University, Changsha, Hunan, China.

|August 2, 2025

概括

核酸减少酶M2 (RRM2) 在原发性Sjögren综合征 (pSS) B细胞中被上调,导致B细胞过活和疾病活动. RRM2可以作为潜在的生物标志物和PSS的治疗点.

科学领域:

免疫学免疫学免疫学
分子生物学分子生物学
类风湿病学类风湿病学

背景情况:

在初级Sjögren综合征 (pSS) 中B细胞功能障碍的机制尚未完全理解.
这项研究研究了pSS B细胞中的核糖核酸减少酶M2 (RRM2).
研究RRM2在B细胞高反应性中的作用及其作为生物标志物的潜力.

研究的目的:

为了研究RRM2在原发性Sjögren综合征 (pSS) B细胞中的表达和功能.
确定RRM2对B细胞过敏反应的贡献及其作为疾病活性生物标志物的潜力.
阐明PSS中RRM2表达的调节机制.

主要方法:

对pSS B细胞的转录组分析以确定差异表达的基因,重点是RRM2.
在B细胞子集和唾液腺中使用流细胞计和免疫组织化学验证RRM2表达.
使用RRM2抑制剂奥萨尔米德对RRM2在B细胞激活,分化和抗体产生中的作用进行体外评估;探索RRM2调节中的METTL3-介导m6A修饰.

主要成果:

在pSS B细胞和唾液腺中,RRM2的表达显著上调.
升高的RRM2水平与增加的疾病活性 (ESSDAI),更高的IgG和减少的唾液流相关.
RRM2促进B细胞激活,血细胞分化和自身抗体的产生;METTL3增强RRM2mRNA的稳定性.

结论:

在pSS B细胞和唾液腺中,RRM2被上调,与疾病活性相关.
由METTL3介导的m6A修饰调节RRM2表达,提供了对PSS免疫功能障碍的见解.
RRM2代表了PSS B细胞过活性的潜在生物标志物和治疗标.

关键词:

自动抗体生产自动抗体生产 B细胞是B细胞的组成部分.在RRM2中使用RRM2.m6A 修改的修改在 pSS pSS 中.

更多相关视频

Author Spotlight: Exploring the Role of Inflammation in the Co-occurrence of Primary Sjogren's Syndrome and Lung Adenocarcinoma

Author Spotlight: Exploring the Role of Inflammation in the Co-occurrence of Primary Sjogren's Syndrome and Lung Adenocarcinoma

Published on: September 20, 2024

A Chronic Autoimmune Dry Eye Rat Model with Increase in Effector Memory T Cells in Eyeball Tissue

A Chronic Autoimmune Dry Eye Rat Model with Increase in Effector Memory T Cells in Eyeball Tissue

Published on: June 7, 2017

相关概念视频

T Cell Types and Functions

T Cell Types and Functions

When T cells with CD4 markers are activated, they give rise to two types of effector cells: helper T cells and regulatory T cells. Meanwhile, T cells with CD8 markers differentiate into effector cytotoxic T cells. The differentiation of CD4 T cells into helper T cell subsets, such as Th1, Th2, and Th17 cells, is dependent on the antigen type, antigen-presenting cell, and regulatory cytokines.
Th1 cells stimulate dendritic cells to express necessary co-stimulatory molecules on their surfaces for...

B Cell Activation and Differentiation

B Cell Activation and Differentiation

The adaptive immune response, a sophisticated defense mechanism, relies on the activation and differentiation of B lymphocytes, or B cells. These processes enable our bodies to mount a tailored response against specific pathogens such as bacteria, free virus particles, toxins, and parasites.
When naive B cells encounter a specific antigen that can bind to the B cell receptor (BCR) on their surface, they undergo sensitization to respond to the antigen's presence. Sensitization begins with...