中国组织工程研究 ›› 2026, Vol. 30 ›› Issue (12): 3005-3013.doi: 10.12307/2026.677

• 软骨组织构建 cartilage tissue construction • 上一篇    下一篇

瑞马唑仑抑制软骨细胞衰老缓解骨关节炎的作用及机制

柯燕琴1,原  杰1,贺光辉1,张晓玲1,2   

  1. 1山西医科大学第二医院骨科,山西省太原市  030000;2上海交通大学医学院附属新华医院骨科,上海市  200092
  • 收稿日期:2025-03-14 接受日期:2025-08-22 出版日期:2026-04-28 发布日期:2025-09-29
  • 通讯作者: 张晓玲,博士,教授,山西医科大学第二医院骨科,山西省太原市030001;上海交通大学医学院附属新华医院骨科,上海市 200092
  • 作者简介:柯燕琴,女,2000年生,安徽省安庆市人,山西医科大学在读硕士,主要从事骨关节炎机制及药物研究。
  • 基金资助:
    山西省重点研发项目(201903D321097),项目负责人:张晓玲

Remimazolam inhibits chondrocyte senescence and alleviates osteoarthritis: roles and mechanisms

Ke Yanqin1, Yuan Jie1, He Guanghui1, Zhang Xiaoling1, 2   

  1. 1Department of Orthopaedics, The Second Hospital of Shanxi Medical University, Taiyuan 030000, Shanxi Province, China; 2Department of Orthopaedics, Xinhua Hospital Affiliated to Shanghai Jiao Tong University, Shanghai 200000, China

  • Received:2025-03-14 Accepted:2025-08-22 Online:2026-04-28 Published:2025-09-29
  • Contact: Zhang Xiaoling, PhD, Professor, Department of Orthopaedics, The Second Hospital of Shanxi Medical University, Taiyuan 030000, Shanxi Province, China; Department of Orthopaedics, Xinhua Hospital Affiliated to Shanghai Jiao Tong University, Shanghai 200000, China
  • About author:Ke Yanqin, MS candidate, Department of Orthopaedics, The Second Hospital of Shanxi Medical University, Taiyuan 030000, Shanxi Province, China
  • Supported by:
    Shanxi Province Key Research and Development Project, No. 201903D321097 (to ZXL)

摘要:


文题释义:
瑞马唑仑:是一种新型的短效γ-氨基丁酸受体激动剂,属于酯苯二氮卓类药物。瑞马唑仑已被应用于临床治疗,主要用于镇静和麻醉,此外,研究还发现瑞马唑仑具有抗炎和器官保护的潜力。
细胞衰老:是一种不可逆的细胞周期阻滞状态。在这种状态下,细胞虽维持代谢活跃,但不再分裂,且对促进生长的刺激无反应。从形态学角度看,衰老细胞呈现出细胞结构的退行性变化,例如细胞核膜出现凹陷、染色质结构发生改变、细胞膜的脆性增加等;在生理学层面,衰老细胞表现为功能衰退和代谢减缓,具体表现为细胞周期停滞、复制能力丧失、酶活性降低等。

背景:研发能够阻止甚至逆转关节软骨退化的药物,一直是研究领域的重要科学问题,近年来细胞衰老及靶向调控细胞衰老的策略受到科研人员的关注。
目的:探讨瑞马唑仑对小鼠软骨细胞衰老的调控机制,评估瑞马唑仑在骨关节炎中的治疗效果及作用机制。
方法:①体外细胞实验:培养原代小鼠软骨细胞,使用10 ng/mL白细胞介素1β来诱导骨关节炎软骨细胞模型。通过CCK-8实验确定瑞马唑仑对小鼠软骨细胞的最佳干预浓度。实验设置正常对照组、白细胞介素1β组、瑞马唑仑组,干预24 h后采用Western blot、免疫荧光染色、β-半乳糖苷酶实验检测各组软骨细胞的合成与分解代谢蛋白指标、衰老蛋白指标以及核因子κB信号通路相关指标。②动物体内实验:选取8周龄C57/BL6小鼠,随机分为假手术组、内侧半月板失稳组、瑞马唑仑组。在瑞马唑仑治疗4周后,分析小鼠步态,采用番红O-固绿染色观察关节软骨的病理学变化,免疫荧光染色检测Ⅱ型胶原和基质金属蛋白酶13表达水平。 
结果与结论:①体外细胞实验:相对于白细胞介素1β组,使用60 μmol/L瑞马唑仑处理后,软骨细胞衰老指标P16、P21表达水平降低,合成代谢指标Ⅱ型胶原和聚集蛋白聚糖表达增加,分解代谢指标基质金属蛋白酶3和基质金属蛋白酶13表达降低以及核因子κB信号通路被抑制。②动物体内实验:瑞马唑仑治疗4周后,与内侧半月板失稳组相比,瑞马唑仑组小鼠下肢功能恢复,组织病理学评分改善,Ⅱ型胶原表达增加,基质金属蛋白酶13表达降低。结果表明:瑞马唑仑通过抑制核因子κB信号通路减轻软骨细胞衰老,改善软骨结构,为骨关节炎治疗提供了新的策略。
https://orcid.org/0009-0000-0385-7438(柯燕琴);https://orcid.org/0000-0002-0134-1347(张晓玲)

中国组织工程研究杂志出版内容重点:干细胞;骨髓干细胞;造血干细胞;脂肪干细胞;肿瘤干细胞;胚胎干细胞;脐带脐血干细胞;干细胞诱导;干细胞分化;组织工程

关键词: 骨关节炎, 瑞马唑仑, 软骨细胞, 细胞衰老, 核因子κB信号通路, Ⅱ型胶原, 基质金属蛋白酶

Abstract: BACKGROUND: The development of medications that can stop or even reverse the degeneration of articular cartilage has long been a significant scientific concern. Researchers have recently become interested in cell senescence and focused on regulatory techniques.
OBJECTIVE:
To explore the regulatory mechanism of remimazolam on chondrocyte senescence in mice, and assess its therapeutic efficacy and mechanism of action in osteoarthritis.
METHODS: (1) In vitro cell experiment: After primary chondrocytes were isolated and cultivated, chondrocyte models of osteoarthritis were induced in vitro using 10 ng/mL interleukin-1β. The optimal intervention concentration of remimazolam on mouse chondrocytes was detected using the cell counting kit-8 assay. Three groups were set up in the experiment: normal control, interleukin-1β, and remimazolam groups. Twenty-four hours after intervention, western blot, immunofluorescence staining, and β-galactosidase assays were used to detect the synthesis and catabolism protein indicators, senescence protein indicators, and nuclear factor-κB signaling pathway-related indicators in mouse chondrocytes. (2) In vivo animal experiment: C57/BL6 mice aged 8 weeks were randomized into three groups: the sham group, the medial meniscus instability group, and the remimazolam group. Following 4 weeks of remimazolam treatment, gait analysis in mice was performed. Pathological changes in the articular cartilage were observed using safranine O-fast green staining. Immunofluorescence staining was used to detect the expression levels of type II collagen and matrix metalloproteinase 13.
RESULTS AND CONCLUSION: (1) In vitro cell experiment: Compared with the interleukin-1β group, interleukin-1β-induced chondrocytes treated with 60 μmol/L remimazolam exhibited a significant decrease in the expression levels of the senescence markers P16 and P21, an increase in the expression of anabolic markers type II collagen and aggrecan, a decrease in the expression of catabolic markers matrix metalloproteinase 3 and matrix metalloproteinase 13, and inhibition of the nuclear-κB signaling pathway. (2) In vivo animal experiment: After 4 weeks of treatment with remimazolam, the mice in the remimazolam group showed recovered lower limb function, improved histopathological scores, increased expression of type II collagen, decreased expression of matrix metalloproteinase 13 compared with those in the medial meniscus instability group. To conclude, by blocking the nuclear factor-κB signaling pathway, remimazolam alleviates chondrocyte senescence and enhances cartilage structure, offering a novel approach to treating osteoarthritis.

Key words: osteoarthritis, remimazolam, chondrocytes, cellular senescence, nuclear factor-κB signaling pathway, type II collagen, matrix metalloproteinase

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