卡尔帕因-1,而不是卡尔帕因-2,与多发性硬化症中的HMGB1/TLR4/NF-KB信号通路变量有关
Firdevs Uluc1, Sule Aydin Turkoglu2, Bihter Gokce Celik1
1Department of Interdisciplinary Neuroscience, Institute of Health Sciences, Bolu Abant İzzet Baysal University, Bolu, Turkey.
Neurological research
|August 24, 2025
概括
在患有多发性硬化症 (MS) 和神经脊髓炎光谱障碍 (NMOSD) 的患者中,Calpain- 1和Calpain- 2水平升高,这表明它通过HMGB1途径在神经炎症中起作用.
科学领域:
- 神经免疫学
- 神经炎症
- 脱素的疾病
背景情况:
- 了解信号通路对于MS和NMOSD等脱髓化疾病至关重要.
- 在神经炎症中涉及HMGB1/TLR4/NF-κB通路.
研究的目的:
- 研究Calpain-1 (CAPN1) 和Calpain-2 (CAPN2) 与HMGB1/TLR4/NF-κB通路之间的关系.
- 在多发性硬化症 (pwMS) 和神经髓炎光谱障碍 (pwNMOSD) 患者中比较这些标志物.
主要方法:
- 使用ELISA测量了CAPN1,CAPN2,HMGB1,可溶性TLR4 (sTLR4) 和NF-κB的水平.
- 这项研究包括36个pwMS,9个pwNMOSD和28个对照组 (pwPTC).
主要成果:
- 与pwNMOSD和对照组相比,pwMS的CAPN1和CAPN2水平显著更高.
- 两组之间没有观察到HMGB1,sTLR4或NF- kB水平的显著差异.
- 在pwMS中发现了CAPN1和CAPN2之间的正相关性,在pwMS中发现了CAPN1和HMGB1之间的正相关性.
结论:
- 通过HMGB1信号传递,CAPN1可能导致MS中的神经炎症.
- 需要对更大群体和纵向研究进行进一步的研究.
- 研究CAPN1抑制可以为MS提供治疗见解.
相关概念视频
NF-κB-dependent Signaling Pathway
7.8K
The transcription factor NF-κB was discovered in 1986 in the lab of Nobel laureate Professor David Baltimore, for its interaction with the immunoglobulin light chain enhancer in B-cells. After more than three decades of study, it is now evident that NF-κB regulates the expression of over 100 genes. Most of these genes play an essential role in the innate and adaptive immune responses as well as the inflammatory responses of animals.
NF-κB-dependent Signaling Mechanism
The...
NF-κB-dependent Signaling Mechanism
The...
7.8K
Calmodulin-dependent Signaling
5.3K
Calmodulin (CaM) is a calcium-binding protein in eukaryotes that controls various calcium-regulated cellular processes. It has four calcium-binding sites that bind calcium to form the calcium-calmodulin ( Ca2+-CaM) complex. GPCR stimulation increases the calcium levels in the cells that bind to CaM and induces a conformational change.
The Ca2+-CaM complex does not have enzymatic activity by itself. Instead, the complex binds downstream target proteins, including membrane proteins or enzymes,...
The Ca2+-CaM complex does not have enzymatic activity by itself. Instead, the complex binds downstream target proteins, including membrane proteins or enzymes,...
5.3K
T Cell Types and Functions
1.4K
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...
Th1 cells stimulate dendritic cells to express necessary co-stimulatory molecules on their surfaces for...
1.4K
The JAK-STAT Signaling Pathway
9.2K
Several cytokine receptors have tightly bound Janus kinase or JAK proteins attached at their cytosolic tail. Small signaling molecules such as cytokines, growth hormones, or prolactins bind to the cytokine receptors and initiate their dimerization. The dimerization brings the cytosolic JAKs together that trans-phosphorylate and activates each other. The activated JAKs now phosphorylate cytosolic tails of the cytokine receptors, which serve as binding sites for adaptor proteins such as SH2...
9.2K
MAPK Signaling Cascades
6.0K
Mitogen-activated protein kinase, or MAPK pathway, activates three sequential kinases to regulate cellular responses such as proliferation, differentiation, survival, and apoptosis. The canonical MAPK pathway starts with a mitogen or growth factor binding to an RTK. The activated RTKs stimulate Ras, which recruits Raf or MAP3 Kinase (MAPKKK), the first kinase of the MAPK signaling cascade. Raf further phosphorylates and activates MEK or MAP2 Kinases (MAPKK), which in turn phosphorylates MAP...
6.0K
Interactions Between Signaling Pathways
6.4K
Signaling cascades usually lack linearity. Multiple pathways interact and regulate one another, allowing cells to integrate and respond to diverse environmental stimuli.
Convergence and divergence, and cross-talk between signaling pathways
Two distinct signaling pathways can converge on a single functional unit, which may either be a single protein or a complex of proteins. The response is either functionally distinct or synergistic between the two pathways but different from the response...
Convergence and divergence, and cross-talk between signaling pathways
Two distinct signaling pathways can converge on a single functional unit, which may either be a single protein or a complex of proteins. The response is either functionally distinct or synergistic between the two pathways but different from the response...
6.4K


