相关实验视频

Updated: May 20, 2025

Strategies for Tracking Anastasis, A Cell Survival Phenomenon that Reverses Apoptosis

Strategies for Tracking Anastasis, A Cell Survival Phenomenon that Reverses Apoptosis

Published on: February 16, 2015

细胞亡体恢复纤维细胞中的NAD和线粒体平衡

Shutong Qian¹, Siya Dai¹, Chunyi Guo¹

¹Department of Plastic Surgery, The First Affiliated Hospital, Zhejiang University School of Medicine, 79 Qingchun Road, Hangzhou, 310003, P. R. China.

Advanced science (Weinheim, Baden-Wurttemberg, Germany)

|May 19, 2025

概括

介质细胞干细胞衍生的亡体通过恢复细胞能量和线粒体功能来有效地治疗皮肤纤维化. 经过修改的透性亡体克服了纤维质矩阵障碍,扭转了痕.

科学领域:

生物医学工程生物医学工程
皮肤病学皮肤病学
细胞生物学细胞生物学

背景情况:

纤维化皮肤疾病涉及纤维细胞过度生长和多余的细胞外基质.
破坏NAD平衡与纤维化有关.
介质细胞干细胞 (MSCs) 显示在皮肤纤维化治疗方面具有前景,但机制尚不清楚.

研究的目的:

调查MSC衍生的亡体 (ABs) 的抗纤维效应.
阐明ABs在恢复细胞平衡中的机制.
开发增强的AB,以改善纤维化皮肤基质的透.

主要方法:

管理MSC和分析他们的命运和衍生ABs.
通过NAMPT转移,FOXO1脱乙烯化和线粒细胞衰变来研究ABs对NAD和线粒细胞平衡的影响.
通过代谢糖基工程和点击化学,设计透性亡体 (pAB).
在 keloid 异种移植和硬化皮肤病小鼠模型中测试 pAB 疗效.

主要成果:

在体内,MSCs经历快速的亡,但它们的ABs表现出强烈的抗纤维活性.
通过激活NAMPT,增强FOXO1脱甲基化,促进线粒细胞衰变,ABs恢复NAD和线粒体功能.
设计的pAB成功地穿透了密集的纤维化皮肤基质.
在临床前模型中,pAB治疗显著减少了皮肤纤维化.

结论:

来自MSC的AB为皮肤纤维化提供了一个新的治疗策略.
在纤维性皮肤疾病中,pABs是克服矩阵障碍的有希望的方法.
这项工作为治疗具有挑战性的纤维化疾病提供了新的途径.

关键词:

这是NAD的恒温.一个apoptotic身体的身体.线粒细胞衰变 (mitophagy) 是一种神经衰变的过程.皮肤纤维化皮肤纤维化

更多相关视频

Isolation and Functional Analysis of Mitochondria from Cultured Cells and Mouse Tissue

Isolation and Functional Analysis of Mitochondria from Cultured Cells and Mouse Tissue

Published on: March 23, 2015

Measuring Mitochondrial Function of Naïve and Effector CD8 T Cells

Measuring Mitochondrial Function of Naïve and Effector CD8 T Cells

Published on: March 28, 2025

相关概念视频

Apoptosis

Apoptosis

Apoptosis is a combination of two Greek words, 'apo' and 'ptosis,' meaning separation and falling off, respectively. Hippocrates used this word to describe gangrene, which was caused due to bandaging of fractured bones. Apoptosis was distinguished from necrosis in 1970 when John Kerr reported observations of morphological changes occurring during apoptosis. During one experiment, he observed that the disruption of blood supply to the liver tissue resulted in a size...

Phagocytosis of Apoptotic Cells

Phagocytosis of Apoptotic Cells

Cells undergoing apoptosis form apoptotic bodies that must be removed immediately to prevent inflammation, autoimmune diseases, and necrosis. Phagocytosis is carried out by professional phagocytes such as macrophages or immature dendritic cells. Non-professional phagocytes such as epithelial cells and fibroblasts also take part in this process; however, they are not as effective as professional phagocytes.
Normal cells contain receptors that prevent them from being recognized...

The Intrinsic Apoptotic Pathway

The Intrinsic Apoptotic Pathway

Internal cellular stress, such as cellular injury or hypoxia, triggers intrinsic apoptosis. The B-cell lymphoma 2 (Bcl-2) family of proteins are the primary regulators of the intrinsic apoptotic pathway. For example, during DNA damage, checkpoint proteins, such as Ataxia Telangiectasia Mutated (ATM protein) and Checkpoints Factor-2 (Chk2) proteins, are activated. These proteins phosphorylate p53 which further activates pro-apoptotic proteins, such as Bax, Bak, PUMA, and Noxa, and inhibits...

Introduction to Fibroblasts

Introduction to Fibroblasts

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...

Autophagic Cell Death

Autophagic Cell Death

Christian de Duve discovered “autophagy,” a process in which cellular components are engulfed by membrane-bound organelles called autophagosomes. The autophagosomes then fuse with lysosomes to digest the enclosed contents. Autophagy is generally activated in cells to prevent cell death. However, cell death is triggered when the damage is beyond repair.
Autophagy and Apoptosis
Autophagy can activate apoptosis. In normal conditions, the autophagy activating protein Beclin-1 and...

Mitochondrial Membranes

Mitochondrial Membranes

A single mitochondrion is a bean-shaped organelle enclosed by a double-membrane system. The outer membrane of mitochondria is smooth and contains many porins - the integral membrane transporters. Porins enable free diffusion of ions and small uncharged molecules through the outer mitochondrial membrane but limit the transport of molecules larger than 5000 Daltons. Further, the outer mitochondrial membrane forms a unique structure called membrane contact sites with other subcellular organelles,...