了解上皮细胞在全身性硬化症的发病过程中的作用
Lydia Nagib1, Anshul Sheel Kumar1, Richard Stratton1
1Centre for Rheumatology and Connective Tissue Diseases, UCL Division of Medicine, London NW32PF, UK.
Cells
|July 11, 2025
概括
系统性硬化症 (SSc) 涉及皮肤和器官纤维化. 研究表明,表皮皮质角质细胞在SSc病变发生过程中发挥着关键作用,为这种自身免疫性疾病提供了潜在的治疗点.
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:
- 系统性硬化症 (SSc) 是一种复杂的自身免疫纤维性疾病,影响皮肤和内部器官.
- 病原发生涉及自身抗体,内皮损伤,免疫细胞透和环境触发因素.
- 遗传敏感性与免疫调节基因有关,新出现的证据表明上皮细胞层异常.
研究的目的:
- 为了研究表皮皮质角质细胞在系统性硬化症 (SSc) 发病过程中的作用.
- 探索潜在的治疗策略,针对SSc.中的上皮功能障碍.
- 分析SSc角质细胞的分子特征和JAK抑制剂治疗的效果.
主要方法:
- 对SSc病原和表皮异常的现有文献的综述.
- 对SSc表皮的宏观和分子特征的分析.
- 在接受JAK抑制剂治疗之前和之后的SSc角质细胞单细胞分析.
主要成果:
- 皮肤表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮肤表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表皮表
- 在表皮中涉及的激活因子和通路包括伤口愈合反应,DAMPS和亲纤维素因子.
- 单细胞分析揭示了SSc角质细胞中的活性分子特征,由JAK抑制剂治疗部分逆转.
结论:
- 皮表皮质角质细胞参与SSc的发病,可能是通过失调的免疫和组织修复.
- 向上皮质平衡或上皮质纤维细胞交叉对话可能为SSc提供治疗效益.
- 雅克抑制剂治疗显示出调节SSc质细胞活性的潜力.
相关概念视频
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
Extracellular Matrix
3.5K
Unlike epithelial tissue, which is composed of cells closely packed with little or no extracellular space in between, connective tissue cells are dispersed in a matrix. This extracellular matrix (ECM) is composed of fibrous proteins like collagen, elastin, and fibronectin in a ground substance consisting of interstitial fluid, cell adhesion proteins, and proteoglycans. The proteoglycans form a gel-like material in the spaces between cells and provide hydration, buffering, binding, and force...
3.5K
Clinical Applications of Epidermal Stem Cells
2.8K
Epidermal stem cells (EpiSCs) are mainly located at the basal layer of the epidermis. These cells repair minor injuries of the skin and replace dead skin cells. However, EpiSCs’ cannot heal severe wounds such as major burns or those from diabetes or hereditary disorders. In such cases, culturing the epidermal stem cells from the patient is possible and has yielded successful treatment options, such as laboratory-grown skin grafts. These grafts are synthesized using a patient’s own...
2.8K
Role of Ephrin-Eph Signalling in Intestinal Stem Cell Renewal
2.3K
Erythropoietin-producing hepatocellular carcinoma receptor (Eph) and its ligand, Eph receptor-interacting protein (Ephrin) were first discovered in the human carcinoma cell line, hence the name. Ephrin-Eph interaction guides cells to reach their appropriate location in adult tissues. They also play an essential role in the immune system by helping in immune cell migration, adhesion, and activation. Based on their structure and function, Eph is divided into two classes — EphA and EphB.
2.3K
Renewal of Skin Epidermal Stem Cells
2.6K
The skin is divided into epidermis, dermis, and hypodermis, the skin's outermost, middle, and inner layers. The human epidermal layer regularly undergoes renewal, where old, dead cells are replaced by new cells. Epidermal stem cells or EpiSCs divide and differentiate to restore the lost cells. For the renewal process, some EpiSCs continuously self-renew. In contrast, few others differentiate into transit-amplifying cells, which later form prickle or spinous cells, followed by granular...
2.6K
Epithelial Tissues and Their Functions
23.5K
Epithelial tissues are large sheets of cells covering all of the surfaces of the body. These surfaces can be internal or external, for example, skin, airways, the digestive tract, the urinary system, and the reproductive system. Hollow organs and body cavities that do not connect to the body's exterior, including blood vessels and serous membranes, are lined by epithelial tissue known as the endothelium.
Epithelial tissues provide the body's first line of protection from physical,...
Epithelial tissues provide the body's first line of protection from physical,...
23.5K


