中国组织工程研究 ›› 2025, Vol. 29 ›› Issue (16): 3335-3342.doi: 10.12307/2025.434

• 组织工程软骨材料 tissue-engineered cartilage • 上一篇    下一篇

新型含Mn生物陶瓷粉体减轻软骨细胞的氧化应激损伤

张梓宁1,邓荣辉1,余家阔1,2   

  1. 1北京大学第三医院运动医学科,北京市   100191;2北京清华长庚医院骨科与运动医学中心,清华大学医学中心,北京市   102218
  • 收稿日期:2024-03-25 接受日期:2024-05-21 出版日期:2025-06-08 发布日期:2024-09-02
  • 通讯作者: 余家阔,主任医师,北京大学第三医院运动医学科,北京市 100191;北京清华长庚医院骨科与运动医学中心,清华大学医学中心,北京市 102218
  • 作者简介:张梓宁,男,1998年生,北京市人,汉族,2024年北京大学医学部毕业,博士,主要从事骨关节炎及滑膜炎方面的研究。
  • 基金资助:
    国家自然科学基金-北京市自然科学基金区域新联合发展基金项目(U22A20283),项目负责人:余家阔

Alleviation of oxidative stress damage in chondrocytes by a new Mn-containing bioceramic powder

hang Zining1, Deng Ronghui1, Yu Jiakuo1, 2   

  1. 1Department of Sports Medicine, Peking University Third Hospital, Beijing 100191, China; 2Department of Orthopedic and Sports Medicine Center, Beijing Tsinghua Changgung Hospital Medical Center, Medical Center of Tsinghua University, Beijing 102218, China
  • Received:2024-03-25 Accepted:2024-05-21 Online:2025-06-08 Published:2024-09-02
  • Contact: Zhang Zining, MD, Department of Sports Medicine, Peking University Third Hospital, Beijing 100191, China
  • About author:Yu Jiakuo, Chief physician, Department of Sports Medicine, Peking University Third Hospital, Beijing 100191, China; Department of Orthopedic and Sports Medicine Center, Beijing Tsinghua Changgung Hospital Medical Center, Medical Center of Tsinghua University, Beijing 102218, China
  • Supported by:
    National Natural Science Foundation of China-Beijing Natural Science Foundation Regional New Joint Development Fund Project, No. U22A20283 (to YJK)

摘要:

文题释义:
生物陶瓷:是指一类稳定性较强且具有良好生物相容性的陶瓷材料。由于生物陶瓷能与组织亲和,较少产生免疫排斥,并且无毒副作用,因此常用于医学修复组织工程领域中。
氧化应激:是指在应激源作用下机体出现氧化/抗氧化失衡状态,过量产生活性氧,并且抗氧化系统不足以代偿,进而引发机体炎症等病理改变。

背景:Mn可参与到多种生物体内氧化还原反应中,比如作为超氧化物歧化酶2中的金属辅助基团发挥辅助清除活性氧的作用,因此近些年开发含Mn的新型抗氧化应激材料成为研究的热点。
目的:探讨含Mn生物陶瓷粉体通过降低活性氧途径对软骨细胞氧化应激损伤的保护作用。
方法:采用熔盐法制备含Mn生物陶瓷粉体。分离培养小鼠原代软骨细胞。在H2O2溶液中分别加入含0,0.15,0.30 mg/mL Mn生物陶瓷粉体,避光孵育后检测H2O2清除率。将第2-4代软骨细胞分别与含不同质量浓度(0,0.15,0.30 mg/mL)含Mn生物陶瓷粉体的完全培养基共培养,采用细胞活死染色检测细胞活性。将第2-4代软骨细胞(或软骨组织)分4组干预:空白对照组加入完全培养基培养,H2O2组加入用含 H2O2的完全培养基培养,H2O2+低质量浓度Mn粉体组加入含H2O2+0.15 mg/mL含Mn生物陶瓷粉体的完全培养基培养,H2O2+高质量浓度Mn粉体组加入含 H2O2+0.30 mg/mL含Mn生物陶瓷粉体的完全培养基,采用CCK-8法检测软骨细胞活力,2,7-二氯荧光素二乙酸酯探针检测软骨细胞活性氧生成,qRT-PCR检测软骨细胞相关因子表达,甲苯胺蓝染色检测软骨组织结构与功能。
结果与结论:①两种剂量的含Mn生物陶瓷粉体均可以于体外显著清除H2O2,并且具有质量浓度依赖性;细胞活死染色结果显示,
0.15 mg/mL含Mn生物陶瓷粉体具有软骨细胞安全性,0.30 mg/mL含Mn生物陶瓷粉体存在软骨细胞毒性;②CCK-8检测结果显示,两种质量浓度的含Mn生物陶瓷粉体均可以显著减轻H2O2对软骨细胞活力的抑制作用,并可抑制H2O2诱导的软骨细胞活性氧生成,并且具有质量浓度依赖性;两种质量浓度的含Mn生物陶瓷粉体均可逆转H2O2诱导的软骨细胞血小板反应蛋白解整合素金属肽酶5 mRNA表达升高与蛋白聚糖mRNA表达降低;③甲苯胺蓝染色结果显示,两种质量浓度的含Mn生物陶瓷粉体均可保护氧化应激下软骨组织结构的完整,其中0.30 mg/mL含Mn生物陶瓷粉体还可以减轻软骨组织的功能损伤;④结果表明,含Mn生物陶瓷粉体可以通过清除活性氧途径维持软骨细胞外基质稳态,从而对氧化应激下的软骨细胞发挥保护作用,但0.30 mg/mL含Mn生物陶瓷粉体具有一定的软骨细胞毒性,因此更倾向使用0.15 mg/mL含Mn生物陶瓷粉体进行后续研究。
https://orcid.org/0000-0003-4151-6516 (张梓宁) 

中国组织工程研究杂志出版内容重点:生物材料;骨生物材料;口腔生物材料;纳米材料;缓释材料;材料相容性;组织工程

关键词: 生物陶瓷, Mn粉体材料, 软骨损伤, 氧化应激, 活性氧, 骨关节炎, 细胞外基质, 生物安全性

Abstract: BACKGROUND: Mn can participate in oxidation-reduction reactions in various organisms. For example, as a metal-assisted group in superoxide dismutase 2, Mn plays a role in helping to remove reactive oxygen species. Therefore, the development of novel anti-oxidative stress materials containing Mn has become a research focus in recent years. 
OBJECTIVE: To investigate the protective effect of Mn bioceramic powder material on oxidative stress damage to chondrocytes by reducing the reactive oxygen species pathway.
METHODS: Bioceramic powders containing Mn were prepared by molten salt method. Primary mouse chondrocytes were isolated and cultured. Bioceramic powder containing 0, 0.15, and 0.30 mg/mL of Mn was added into H2O2 solution. The H2O2 clearance rate was detected after incubation without light. The passage 2 to passage 4 chondrocytes were co-cultured with complete media containing Mn-containing bioceramic powder with different mass concentrations (0, 0.15, and 0.30 mg/mL). Cell viability was detected by cell live/dead staining. The passage 2-4 chondrocytes (or cartilage tissue) were divided into four groups for intervention: Complete culture medium was added to the blank control group. The H2O2 group was added and cultured with complete medium containing H2O2. H2O2+low mass concentration Mn powder group was cultured by adding H2O2+0.15 mg /mL Mn-containing bioceramic powder. The complete medium containing H2O2+0.30 mg/mL Mn-containing bioceramic powder was added to the H2O2+high mass concentration Mn powder group. Viability of chondrocytes was detected by CCK-8 assay. Generation of reactive oxygen species of chondrocytes was detected by 2,7-dichlorofluorescein diacetate probe. Expression of chondrocyte-related factors was detected by qRT-PCR. The tissue structure and function of cartilage were detected by toluidine blue staining.
RESULTS AND CONCLUSION: (1) Both doses of Mn-containing bioceramic powders could significantly remove H2O2 in vitro, and they were concentration dependent. The results of cell live/death staining showed that 0.15 mg/mL bioceramic powder containing Mn had chondrocyte safety, and 0.30 mg/mL bioceramic powder containing Mn had chondrocytotoxicity. (2) The results of CCK-8 assay showed that the two mass concentrations of Mn-containing bioceramic powders could significantly reduce the inhibitory effect of H2O2 on chondrocyte viability, and inhibit the generation of reactive oxygen species induced by H2O2 in chondrocytes in a mass concentration dependent manner. Both kinds of Mn-containing bioceramic powders could reverse the H2O2-induced increase of mRNA expression of a disintegrin and metalloproteinase with thrombospondin motifs-5 and decrease of proteoglycan mRNA expression in chondrocytes. (3) Toluidine blue staining results showed that both concentrations of Mn-containing bioceramic powder could protect the integrity of cartilage tissue structure under oxidative stress, and 0.30 mg/mL of Mn-containing bioceramic powder could also reduce the functional damage of cartilage tissue. (4) The results indicate that the Mn-containing bioceramic powder can protect chondrocytes under oxidative stress by clearing reactive oxygen species, maintaining the extracellular matrix homeostasis. However, 0.30 mg/mL Mn-containing bioceramic powder has certain chondrocytotoxicity, so 0.15 mg/mL Mn-containing bioceramic powder is preferred for follow-up studies.

Key words: bioceramic, Mn powder material, cartilage injury, oxidative stress, reactive oxygen species, osteoarthritis, extracellular matrix, biosafety

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