在全身性硬化症中激活PD-1通路会减轻由炎症驱动的纤维化
Maithri Aspari1, Voon Ong2, Klaus Søndergaard3
1Department of Biomedicine, Aarhus University, Aarhus, Denmark.
Annals of the rheumatic diseases
|February 10, 2026
概括
调节编程细胞死亡蛋白1 (PD-1) 途径可以减少扩散性皮肤系统性硬化症 (dcSSc) 模型中的炎症和纤维化. 这表明,针对PD-1轴为dcSSc提供了一个新的治疗策略.
科学领域:
- 免疫学 免疫学 免疫学
- 皮肤病学 皮肤病学
- 纤维化研究 纤维化研究
背景情况:
- 扩散性皮肤系统性硬化症 (dcSSc) 的特征是免疫激活和纤维化.
- 编程细胞死亡蛋白1 (PD-1) 途径在免疫调节中起作用.
- 了解PD-1对dcSSc发病因子的影响对于开发新疗法至关重要.
研究的目的:
- 研究PD-1途径在dcSSc.中的免疫激活和纤维化中的作用.
- 评估dcSSc.中调节PD-1通路的治疗潜力.
主要方法:
- 从dcSSc患者和健康对照 (HCs) 的血清和皮肤活检分析.
- 用PD-1:Fc和抗PD-1抗体对外围血液单核细胞 (PBMC) 和纤维细胞进行体外刺激.
- 对PD-1-阳性 (PD-1pos) 和PD-1-阴性 (PD-1neg) T细胞的表征.
- 在活体研究中,使用小鼠白胺诱导的肺纤维化模型.
主要成果:
- 与HC患者相比,dcSSc患者的可溶性和细胞PD-1水平升高.
- PD-1:Fc处理降低了TGF-β刺激纤维细胞中的细胞外基质 (ECM) 蛋白质分泌和炎症性细胞因子产生.
- PD-1pos SSc T 细胞表现出更具调节性的转录特征.
- 在体内给予PD-1:Fc抑制了肺纤维化发展和益纤维细胞因子的产生.
结论:
- 在dcSSc模型中调节PD-1/PD-Ligand 1轴减弱了炎症和ECM产生.
- 在小鼠模型中,PD-1:Fc治疗减少了全身炎症和肺纤维化.
- 针对PD-1轴代表了对dcSSc.的有前途的新疗法策略.
相关概念视频
Transcription Attenuation in Prokaryotes
18.5K
Transcriptional attenuation occurs when RNA transcription is prematurely terminated due to the formation of a terminator mRNA hairpin structure. Bacteria use these hairpins to regulate the transcription process and control the synthesis of several amino acids including histidine, lysine, threonine, and phenylalanine. Transcription attenuation takes place in the non-coding regions of mRNA.
There are several different mechanisms used to attenuate transcription. In ribosome mediated...
There are several different mechanisms used to attenuate transcription. In ribosome mediated...
18.5K
Inflammation
62.4K
Overview
62.4K
PD Controller: Design
662
In automotive engineering, car suspension systems often employ Proportional Derivative (PD) controllers to enhance performance. PD controllers are utilized to adjust the damping force in response to road conditions. A controller, acting as an amplifier with a constant gain, demonstrates proportional control, with output directly mirroring input.
Designing a continuous-data controller requires selecting and linking components like adders and integrators, which are fundamental in Proportional,...
Designing a continuous-data controller requires selecting and linking components like adders and integrators, which are fundamental in Proportional,...
662
Time-Domain Interpretation of PD Control
408
Proportional-Derivative (PD) control is a widely used control method in various engineering systems to enhance stability and performance. In a system with only proportional control, common issues include high maximum overshoot and oscillation, observed in both the error signal and its rate of change. This behavior can be divided into three distinct phases: initial overshoot, subsequent undershoot, and gradual stabilization.
Consider the example of control of motor torque. Initially, a positive...
Consider the example of control of motor torque. Initially, a positive...
408
Cystic Fibrosis: Pathogenesis
895
Cystic fibrosis (CF), an autosomal recessive disorder, significantly affects the function of exocrine glands. This genetically inherited disease is characterized by the production of thick and sticky mucus, which can severely affect various organs and systems in the body.
CF is primarily caused by a genetic mutation in a chromosome 7 gene coding for the cystic fibrosis transmembrane conductance regulator (CFTR) protein. The most common gene mutation leading to CF is the ΔF508 mutation,...
CF is primarily caused by a genetic mutation in a chromosome 7 gene coding for the cystic fibrosis transmembrane conductance regulator (CFTR) protein. The most common gene mutation leading to CF is the ΔF508 mutation,...
895
C4 Pathway and CAM
49.3K
Most plants use the C3 pathway for carbon fixation. However, some plants, such as sugar cane, corn, and cacti that grow in hot conditions, use alternative pathways to fix carbon and conserve energy loss due to photorespiration. Photorespiration is the process that occurs when the oxygen concentration is high. Under such conditions, the rubisco enzyme in the Calvin cycle binds O2 instead of CO2, which halts photosynthesis and consumes energy.
C4 Pathway
The C4 pathway is used by plants such as...
C4 Pathway
The C4 pathway is used by plants such as...
49.3K


