中国组织工程研究 ›› 2025, Vol. 29 ›› Issue (8): 1541-1547.doi: 10.12307/2025.339

• 软骨组织构建 cartilage tissue construction •    下一篇

沙苑子苷A对关节软骨细胞凋亡的影响

尹  路1,蒋川锋1,陈俊杰1,易  明1,王子赫1,石厚银2,汪国友2,沈骅睿2   

  1. 1西南医科大学,四川省泸州市  646000;2西南医科大学附属中医医院,四川省泸州市  646000
  • 收稿日期:2024-03-22 接受日期:2024-05-06 出版日期:2025-03-18 发布日期:2024-07-05
  • 通讯作者: 沈骅睿,主任中医师,西南医科大学附属中医医院骨关节科,四川省泸州市 646000
  • 作者简介:尹路,男,1997年生,四川省成都市人,汉族,西南医科大学在读硕士,主要从事骨与关节的基础与临床的研究。
  • 基金资助:
    泸州市人民政府-西南医科大学科技战略合作项目(2021LZXNYD-J31),项目负责人:沈骅睿;四川省科技计划专项(2022YFS0609),项目负责人:石厚银;四川省中医药管理局项目(2023MS446),项目负责人:沈骅睿;2023年度西南医科大学校级科研项目(2023ZYYJ05),项目负责人:沈骅睿

Effect of Complanatoside A on the apoptosis of articular chondrocytes

Yin Lu1, Jiang Chuanfeng1, Chen Junjie1, Yi Ming1, Wang Zihe1, Shi Houyin2, Wang Guoyou2, Shen Huarui2   

  1. 1Southwest Medical University, Luzhou 646000, Sichuan Province, China; 2The Affiliated Traditional Chinese Medicine Hospital, Southwest Medical University, Luzhou 646000, Sichuan Province, China
  • Received:2024-03-22 Accepted:2024-05-06 Online:2025-03-18 Published:2024-07-05
  • Contact: Shen Huarui, Chief physician, The Affiliated Traditional Chinese Medicine Hospital, Southwest Medical University, Luzhou 646000, Sichuan Province, China
  • About author:Yin Lu, Master candidate, Southwest Medical University, Luzhou 646000, Sichuan Province, China
  • Supported by:
    Luzhou Municipal Government Southwest Medical University Science and Technology Strategic Cooperation Project, No. 2021LZXNYD-J31 (to SHR); Sichuan Provincial Science and Technology Plan Special Project, No. 2022YFS0609 (to SHY); Project of Sichuan Provincial Administration of Traditional Chinese Medicine, No. 2023MS446 (to SHR); 2023 Southwest Medical University School-level Research Program, No. 2023ZYYJ05 (to SHR)

摘要:




文题释义:
沙苑子苷A:分子式为C28H32O16,是中药沙苑子中提取的含量较高的黄酮类成分之一。研究表明沙苑子苷A对肺上皮细胞、肝细胞具有保护和抗凋亡作用。
细胞凋亡:机体生理与病理情况下的细胞自主有序的死亡,凋亡的异常会导致慢性退行性疾病等。

背景:软骨细胞凋亡是骨关节炎发生发展的重要因素,沙苑子苷A具有类黄酮作用,可抑制多种细胞凋亡,但其对软骨细胞凋亡的影响及作用机制尚不明确。
目的:基于Wnt/β-catenin信号通路探讨沙苑子苷A与软骨细胞凋亡的内在关联及作用机制。
方法:①收集膝关节置换术中截取的股骨及胫骨部分软骨组织,体外分离培养及鉴定软骨细胞;②通过CCK-8检测沙苑子苷A在0-
160 μmol/L范围内是对软骨细胞的最佳干预浓度;③将软骨细胞分为空白组、硝普钠(1.5 mmol/L)诱导组、硝普钠(1.5 mmol/L)+沙苑子苷A
(5 μmol/L)组。采用CCK-8、流式细胞技术检测各组细胞活力、凋亡率;免疫荧光染色检测各组细胞中Ⅱ型胶原蛋白、SOX9表达;Western Blot检测细胞凋亡相关蛋白及Wnt/β-catenin通路蛋白的表达。
结果与结论:①体外提取的细胞经培养、染色鉴定为软骨细胞;②沙苑子苷A在0-80 μmol/L浓度范围内对软骨细胞无明显细胞毒性,在2.5-10 μmol/L浓度范围内可明显提高软骨细胞活力,且当浓度为5 μmol/L时作用较为显著;③硝普钠诱导组软骨细胞凋亡率高于空白组,硝普钠+沙苑子苷A组的细胞凋亡率低于硝普钠诱导组;④硝普钠诱导组软骨细胞Ⅱ型胶原蛋白、SOX9荧光强度弱于空白组,硝普钠+
沙苑苷A组Ⅱ型胶原蛋白、SOX9的荧光强度高于硝普钠诱导组;⑤硝普钠诱导组Bax、Caspase-3、基质金属蛋白酶13、Wnt3a、Wnt5a和β-catenin的蛋白表达量高于空白组,Bcl-2蛋白表达低于空白组;硝普钠+沙苑子苷A组除Bcl-2的蛋白表达高于硝普钠诱导组外,上述其他蛋白表达均低于硝普钠诱导组。结果表明沙苑子苷A对软骨细胞凋亡具有一定的抑制作用,可调节凋亡相关蛋白、促进软骨细胞调节因子表达,推测可能通过抑制Wnt/β-catenin信号通路发挥作用。
https://orcid.org/0009-0006-9016-2645(尹路)

关键词: 骨关节炎, 软骨细胞, 沙苑子苷A, 细胞凋亡, Wnt/β-catenin信号通路

Abstract: BACKGROUND: Chondrocyte apoptosis is an important factor in the development of osteoarthritis, and Complanatoside A has a flavonoid effect, which can inhibit apoptosis of various cells, but its effect on chondrocyte apoptosis and the mechanism of action are not clear.
OBJECTIVE: To investigate the intrinsic association and mechanism of Complanatoside A in chondrocyte apoptosis based on the Wnt/β-catenin signaling pathway.
METHODS: (1) The cartilage tissues of the femur and tibia transected during knee arthroplasty were collected, and chondrocytes were isolated, cultured in vitro, and identified. (2) Cell counting kit-8 was used to detect the optimal intervention concentration of Complanatoside A in the concentration range of 0-
160 μmol/L. (3) Chondrocytes were divided into blank group, sodium nitroprusside (1.5 mmol/L)-induced group, and sodium nitroprusside (1.5 mmol/L)+
Complanatoside A (5 μmol/L) group. The viability and apoptosis rate of the cells in each group were detected by cell counting kit-8 and flow cytometry. The expression of type II collagen and SOX9 was detected by immunofluorescence staining. The expression of apoptosis-related proteins and Wnt/β-catenin pathway proteins was detected by western blot assay.
RESULTS AND CONCLUSION: The cells extracted in vitro were cultured and stained, and were clearly identified as chondrocytes. Complanatoside A had no obvious cytotoxicity to chondrocytes in the concentration range of 0-80 μmol/L, and significantly improved the chondrocyte viability in the concentration range of 2.5-10 μmol/L, especially when the concentration was 5 μmol/L. The apoptotic rate of chondrocytes was higher in the sodium nitroprusside-induced group than the blank control group, while the apoptotic rate was lower in the sodium nitroprusside+Complanatoside A group than the sodium nitroprusside-induced group. The fluorescence intensity of type II collagen and SOX9 in chondrocytes was weaker in the sodium nitroprusside-induced group than the blank control group, while the fluorescence intensity of type II collagen and SOX9 in the sodium nitroprusside+Complanatoside A group was higher than that of the sodium nitroprusside-induced group. In the sodium nitroprusside-induced group, the protein expression of Bax, Caspase-3, matrix metalloproteinase 13, Wnt3a, Wnt5a and β-catenin was higher than that of the blank control group, while the protein expression of Bcl-2 was lower than that of the blank control group. In the sodium nitroprusside+Complanatoside A group, except for the protein expression of Bcl-2 which was higher than that of the sodium nitroprusside-induced group, the expression of the other aforementioned proteins was lower than that of the sodium nitroprusside-induced group. To conclude, Complanatoside A has a certain inhibitory effect on chondrocyte apoptosis, which could regulate apoptosis-related proteins and promote the expression of chondrocyte regulatory factors, and presumably might play a role through inhibiting the Wnt/β-catenin signaling pathway.

中国组织工程研究杂志出版内容重点:组织构建;骨细胞;软骨细胞;细胞培养;成纤维细胞;血管内皮细胞;骨质疏松;组织工程

Key words: osteoarthritis, chondrocyte, Complanatoside A, apoptosis, Wnt/β-catenin signaling pathway

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