相关实验视频

Updated: Jul 17, 2025

In Vitro Impact Model to Generate Sublethal Chondrocyte Injury in Bovine Cartilage Explants

In Vitro Impact Model to Generate Sublethal Chondrocyte Injury in Bovine Cartilage Explants

Published on: June 27, 2025

在骨关节炎性肌肉细胞中开发一种DNA损伤诱导的衰老模型

Mélina Georget¹, Anaïs Defois¹, Romain Guiho¹

¹Nantes Université, Oniris, CHU Nantes, Inserm, Regenerative Medicine and Skeleton RMeS, UMR 1229, Nantes F-44000, France.

|September 2, 2023

概括

细胞衰老,一个涉及骨关节炎 (OA) 的过程,在关节组织中尚未完全理解. 埃托胺可靠地诱导人体软骨细胞中与DNA损伤相关的衰老,为OA治疗发展提供了一个模型.

科学领域:

生物医学科学生物医学科学
细胞生物学细胞生物学
骨关节炎研究骨关节炎研究

背景情况:

衰老细胞 (SnCs) 在骨关节炎 (OA) 关节组织中积累,导致疾病进展.
目前的老化疗法在临床前的骨关节炎模型中表现有希望,但在膝盖骨关节炎患者中缺乏临床疗效.
更深入地了解状细胞衰老机制对于开发有效的OA治疗至关重要.

研究的目的:

建立可靠的体外模型来诱导状细胞衰老.
为了研究与DNA损伤相关的和与炎症相关的衰老途径在人类的OA冠状细胞.

主要方法:

人类的OA冠状细胞被治疗以埃托波来诱导与DNA损伤相关的衰老.
淋巴细胞被暴露在慢性IL-1β中,以研究与炎症相关的衰老.
评估了关键的衰老特征,包括细胞循环停止,DNA损伤和衰老相关的分泌特征 (SASP).

主要成果:

乙氧治疗可靠地诱导了与DNA损伤相关的衰老在人类关节性肌肉细胞中.
埃托波西德诱导了繁殖能力的丧失,DNA损伤的积累和部分SASP.
慢性IL-1β暴露只导致部分衰老标志物表达,限制了关于其诱导衰老能力的结论.

结论:

埃托化物为研究DNA损伤诱导的状细胞衰老提供了一个强大的模型.
这种以太化物诱导的衰老模型可以帮助研究红细胞中衰老的开始.
该模型为开发针对OA的解疗法提供了一个有价值的工具.

关键词:

一个IL-1ββ.冠状腺细胞 (chondrocytes) 是一种体内细胞.这里是etoposide的位置.骨关节炎是一种关节炎.衰老是一种老化.

更多相关视频

Real-time Visualization and Analysis of Chondrocyte Injury Due to Mechanical Loading in Fully Intact Murine Cartilage Explants

Real-time Visualization and Analysis of Chondrocyte Injury Due to Mechanical Loading in Fully Intact Murine Cartilage Explants

Published on: January 7, 2019

Software-Assisted Quantitative Measurement of Osteoarthritic Subchondral Bone Thickness

Software-Assisted Quantitative Measurement of Osteoarthritic Subchondral Bone Thickness

Published on: March 18, 2022

相关概念视频

Replicative Cell Senescence

Replicative Cell Senescence

Replicative cell senescence is a property of cells that allows them to divide a finite number of times throughout the organism's lifespan while preventing excessive proliferation. Replicative senescence is associated with the gradual loss of the telomere — short, repetitive DNA sequences found at the end of the chromosomes. Telomeres are bound by a group of proteins to form a protective cap on the ends of chromosomes. Embryonic stem cells express telomerase — an enzyme that adds...

DNA Damage can Stall the Cell Cycle

DNA Damage can Stall the Cell Cycle

In response to DNA damage, cells can pause the cell cycle to assess and repair the breaks. However, the cell must check the DNA at certain critical stages during the cell cycle. If the cell cycle pauses before DNA replication, the cells will contain twice the amount of DNA. On the other hand, if cells arrest after DNA replication but before mitosis, they will contain four times the normal amount of DNA. With a host of specialized proteins at their disposal,cells must use the right protein at...

DNA Damage Can Stall the Cell Cycle

DNA Damage Can Stall the Cell Cycle

The Effect of Aging on Tissues

The Effect of Aging on Tissues

Several body functions deteriorate with age. The external signs of aging are easily identifiable. For example, the skin becomes dry, less elastic, and thins out, forming wrinkles. The skin of the face begins to appear looser due to a decrease in the levels of elastic and collagen fibers in the connective tissue. Additionally, melanin production in the hair follicle decreases with age, resulting in gray hair. Moreover, the senses of sight and hearing decline, so glasses and hearing aids may...