评估MSC-Secretome效应在一个ex-vivo分区的骨质链接接口模型中的评估
Francesca Cadelano1,2, Chiara Giannasi1,2, Nicolò Rossi3
1Department of Biomedical, Surgical and Dental Sciences, One Health, University of Milan, Milan, Italy, unimi.it.
Stem cells international
|February 2, 2026
概括
一个新的3D打印的活体模型使用骨质突变器有效地模仿了骨关节炎. 脂肪酸衍生的介质细胞分泌体显示出对抗软骨退化的潜力,为骨关节炎提供了新的治疗途径.
科学领域:
- 整形外科 整形外科 整形外科
- 再生医学是一种再生医学.
- 生物材料是一种生物材料.
背景情况:
- 骨关节炎 (OA) 构成了重大挑战,推动了先进治疗策略的需求.
- 目前的临床前模型往往缺乏复杂性,无法完全回顾OA病理生理学.
- 开发基于人类的ex vivo模型对于推进OA研究和遵守3Rs原则至关重要.
研究的目的:
- 开发和验证一种新的3D打印的活体骨质突变 (OCh) 扩展模型,用于研究骨关节炎.
- 在炎症性OA微环境中评估脂肪衍生中酶体细胞分泌体的抗代作用潜力.
- 为了研究来自介质细胞的条件介质 (CM) 和原始条件介质 (pCM) 在减轻OA诱导的软骨损伤方面的有效性.
主要方法:
- 一个3D打印设备被用来培养人类的OCh爆炸物,使骨和软骨区分开来.
- 测量了组织特异性标记物,包括MMP活性,sGAG释放,ALP,TRAP和OC水平,以确认隔间完整性.
- 软骨扩展体被暴露在炎症性细胞因子 (TNFα和IL-1β) 中,并从脂肪衍生的介质细胞中用CM或pCM治疗.
主要成果:
- 通过OCh探索模型,骨和软骨区间的有效分离得到了验证,通过明显的标记物表达得到了验证.
- 炎症刺激显著上调了MMP活性和软骨中的sGAG释放,这表明了代谢过程.
- 两种CM和pCM治疗都有效地抵消了MMP活性的炎症上调,并部分减少了sGAG的释放,对骨区的影响最小.
结论:
- 开发的3D打印的OCh探索模型作为一个有价值的基于人类的临床前工具用于OA研究,与3Rs原则保持一致.
- 脂肪衍生的介质细胞的分泌体表现出抗代性质,这表明早期OA的潜在治疗应用.
- 对介质细胞分泌体的进一步研究可能会导致新的策略来缓解与OA相关的退行性过程.
相关概念视频
Eukaryotic Compartmentalization
18.2K
One of the distinguishing features of eukaryotic cells is that they contain membrane-bound organelles, such as the nucleus and mitochondria, that carry out specialized functions. Since biological membranes are only selectively permeable to solutes, they help create a compartment with controlled conditions inside an organelle. These microenvironments are tailored to the organelle's specific functions and help isolate them from the surrounding cytosol.
For example, lysosomes in the animal...
For example, lysosomes in the animal...
18.2K
Eukaryotic Compartmentalizations
174.8K
One of the distinguishing features of eukaryotic cells is that they contain membrane-bound organelles, such as the nucleus and mitochondria, that carry out specialized functions. Since biological membranes are only selectively permeable to solutes, they help create a compartment with controlled conditions inside an organelle. These microenvironments are tailored to the organelle's specific functions and help isolate them from the surrounding cytosol.
For example, lysosomes in the animal cells...
For example, lysosomes in the animal cells...
174.8K
Protein-protein Interfaces
14.7K
Many proteins form complexes to carry out their functions, making protein-protein interactions (PPIs) essential for an organism's survival. Most PPIs are stabilized by numerous weak noncovalent chemical forces. The physical shape of the interfaces determines the way two proteins interact. Many globular proteins have closely-matching shapes on their surfaces, which form a large number of weak bonds. Additionally, many PPIs occur between two helices or between a surface cleft and a...
14.7K
Protein-Protein Interfaces
4.5K
4.5K
Self-Evaluation Maintenance Model
311
The Self-Evaluation Maintenance (SEM) model offers a psychological framework to understand how individuals’ self-esteem is influenced by the achievements of others, particularly those with whom they share close personal bonds. The SEM model operates when personal rather than social identity guides individuals. Central to this model is the notion that individuals have an inherent desire to preserve a favorable self-image, which is continuously shaped by interpersonal comparisons and...
311
Buffer Effectiveness
55.2K
Buffer solutions do not have an unlimited capacity to keep the pH relatively constant . Instead, the ability of a buffer solution to resist changes in pH relies on the presence of appreciable amounts of its conjugate weak acid-base pair. When enough strong acid or base is added to substantially lower the concentration of either member of the buffer pair, the buffering action within the solution is compromised.
The buffer capacity is the amount of acid or base that can be added to a given volume...
The buffer capacity is the amount of acid or base that can be added to a given volume...
55.2K


