相关实验视频
Updated: Mar 6, 2026

06:04
Murine Dermal Fibroblast Isolation by FACS
Published on: January 7, 2016
22.6K
树突细胞关联的标志L1调节纤维细胞在伤口愈合期间的分化
Kento Takaya1, Yukari Nakajima1, Shigeki Sakai1
1Department of Plastic and Reconstructive Surgery, Keio University School of Medicine, Tokyo, Japan.
概括
在树突细胞中,富含氨酸的C-激酶基质类型1 (MARCKSL1) 驱动着痕的形成,通过促进纤维细胞活性. 在树突细胞中抑制MARCKSL1显著减少痕,为伤口愈合提供了潜在的治疗点.
科学领域:
- 再生医学是一种再生医学.
- 免疫学 免疫学 免疫学
- 皮肤病学 皮肤病学
背景情况:
- 免疫细胞,特别是树突细胞,对于伤口愈合和痕形成至关重要.
- 状细胞的作用超越了抗原呈现,扩展到调节纤维化过程.
- 鉴定参与痕的树突细胞中的特定分子通路是治疗开发的关键.
研究的目的:
- 为了研究在树突细胞中在伤口愈合和痕形成过程中富含氨酸的C-激酶基质类型1 (MARCKSL1) 的作用.
- 确定树突细胞中MARCKSL1表达是否影响纤维细胞活动.
- 评估针对树突细胞中MARCKSL1的治疗潜力,以预防痕.
主要方法:
- 单细胞RNA测序小鼠痕组织以识别树突细胞中的MARCKSL1表达.
- 使用小鼠胎儿伤口愈合模型观察MARCKSL1-阳性树突细胞积累.
- 用转化生长因子β1 (TGF-β1) 刺激小鼠树突细胞,并与纤维细胞共同培养.
- 采用MARCKSL1shRNA在树突细胞和MANS中抑制表达,作为体内抑制剂.
主要成果:
- 马克斯L1被确定在树突细胞集群中,在小鼠痕的纤维化区域内.
- 标记L1-阳性树突细胞在痕形成期间在伤口边缘积累.
- TGF-β1刺激增强了树突细胞中MARCKSL1的表达,促进纤维细胞向肌纤维细胞的分化.
- 在树突细胞中,MARCKSL1的淘汰减弱了这种亲纤维效应.
- 用MANS抑制MARCKSL1,显著减少了小鼠的痕形成.
结论:
- 树突细胞中的MARCKSL1表达在调节纤维细胞活性和在伤口愈合期间促进纤维细胞反应方面发挥着重要作用.
- 在树突细胞中准MARCKSL1代表了一种有前途的治疗策略,可以预防过度痕并促进再生性伤口愈合.
更多相关视频
相关概念视频
Introduction to Fibroblasts
4.2K
Rudolph Virchow discovered spindle-shaped cells called fibroblasts in 1858. Inactive fibroblasts, called fibrocytes, become activated by various stimuli, such as growth factors and inflammatory cytokines. Activated fibroblasts play a crucial role in wound healing, inflammation, formation of new blood vessels, and cancer progression. Uncontrolled activation of fibroblasts results in fibrosis, the excess deposition of fibrous tissue, which can lead to scarring and affect normal organs. This...
4.2K
Role of Matrix Metalloproteases in Degradation of ECM
3.6K
Matrix metalloproteases (MMPs) are enzymes involved in the hydrolysis of proteins and glycoproteins of the extracellular matrix. MMPs are essential for the migration and proliferation of cells through the dense matrix network, throughout embryonic development, and throughout morphogenesis. The first MMP activity discovered was a collagenase in a tadpole's tail undergoing metamorphosis. The active collagen deposition and modifications lead to the morphogenesis of tadpoles into the adult...
3.6K
Phases of Wound Repair
9.2K
Following injury, the integrity of the injured tissues must be reestablished. For example, in skin tissue, wound repair involves coordination among resident skin cells, blood mononuclear cells, extracellular matrix, growth factors, and cytokines to complete the healing cascade.
Formation of Blood Clot
In case of deep injuries, trauma to blood vessels results in blood loss. In the meantime, phospholipids released from the ruptured endothelial cellular membrane are converted into arachidonic...
Formation of Blood Clot
In case of deep injuries, trauma to blood vessels results in blood loss. In the meantime, phospholipids released from the ruptured endothelial cellular membrane are converted into arachidonic...
9.2K
Cell Migration
7.0K
Cell migration is a process by which the cells move from one location to another, playing an essential role in embryological development, repair and regeneration, immune response, and metastasis. Cells migrate in response to chemical or mechanical signals generated by specific organs or tissues. The overall mechanism includes three steps - polarization, protrusion, and release. Polarization involves the formation of a distinct cell front and rear, which determines the direction of movement.
7.0K
The Extracellular Matrix
12.9K
Overview
In order to maintain tissue organization, many animal cells are surrounded by structural molecules that make up the extracellular matrix (ECM). Together, the molecules in the ECM maintain the structural integrity of tissue as well as the remarkable specific properties of certain tissues.
Composition of the Extracellular Matrix
The extracellular matrix (ECM) is commonly composed of ground substance, a gel-like fluid, fibrous components, and many structurally and functionally diverse...
In order to maintain tissue organization, many animal cells are surrounded by structural molecules that make up the extracellular matrix (ECM). Together, the molecules in the ECM maintain the structural integrity of tissue as well as the remarkable specific properties of certain tissues.
Composition of the Extracellular Matrix
The extracellular matrix (ECM) is commonly composed of ground substance, a gel-like fluid, fibrous components, and many structurally and functionally diverse...
12.9K
TGF - β Signaling Pathway
10.8K
The TGF-β signaling pathway regulates cell growth, differentiation, adhesion, motility, and development. TGF-β ligands that induce TGF-β signaling are synthesized in their latent form. Several proteases or cell surface receptors such as integrins act upon the latent form, releasing the active ligand. There are three types of mammalian TGF-βs: (TGF-β1, TGF-β2, and TGF-β3) that bind as homodimers or heterodimers to TGF-β receptors. The TGF-β receptors...
10.8K

