中国组织工程研究 ›› 2024, Vol. 28 ›› Issue (20): 3216-3222.doi: 10.12307/2024.310

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

葡萄籽提取物抑制大鼠生长板软骨细胞凋亡及促进胫骨的生长

宁桃丽,谢  艳,王  娜,王庆丰,吉  建,张冬纳   

  1. 河南省洛阳正骨医院(河南省骨科医院),河南省洛阳市  471000
  • 收稿日期:2023-03-07 接受日期:2023-04-24 出版日期:2024-07-18 发布日期:2023-09-11
  • 通讯作者: 王娜,副主任技师,河南省洛阳正骨医院(河南省骨科医院),河南省洛阳市 471000
  • 作者简介:宁桃丽,女,1985年生,河南省洛阳市人,汉族,主管药师,主要从事临床药学和骨科基础研究。
  • 基金资助:
    河南省中医药科学研究专项课题(2019ZY1034),项目负责人:王娜;河南省中医药科学研究专项课题(2019ZY2098),项目负责人:宁桃丽

Grape seed extract inhibits apoptosis in growth plate chondrocytes and promotes tibial growth in rats

Ning Taoli, Xie Yan, Wang Na, Wang Qingfeng, Ji Jian, Zhang Dongna   

  1. Henan Provincial Luoyang Orthopedic-Traumatological Hospital (Henan Provincial Orthopedic Hospital), Luoyang 471000, Henan Province, China
  • Received:2023-03-07 Accepted:2023-04-24 Online:2024-07-18 Published:2023-09-11
  • Contact: Wang Na, Associate chief technician, Henan Provincial Luoyang Orthopedic-Traumatological Hospital (Henan Provincial Orthopedic Hospital), Luoyang 471000, Henan Province, China
  • About author:Ning Taoli, Pharmacist-in-charge, Henan Provincial Luoyang Orthopedic-Traumatological Hospital (Henan Provincial Orthopedic Hospital), Luoyang 471000, Henan Province, China
  • Supported by:
    Special Research Projects of Traditional Chinese Medicine of Henan Province, Nos. 2019ZY1034 (to WN) and 2019ZY2098 (to NTL [project participant])

摘要:


文题释义:

细胞凋亡:又称细胞程序性死亡,是一定条件下有核细胞启动的自身内部机制,细胞凋亡后期的共同途径是Caspase。有研究表明,软骨终板细胞凋亡可能的主要途径是线粒体途径,由Caspase-9起始。
Caspase-9:是含半胱氨酸的天冬氨酸蛋白水解酶家族成员之一,称为启动Caspase,位于细胞凋亡信号转导通路级联反应上游,是内源性凋亡通路中的关键蛋白。


背景:已有文献报道,葡萄籽提取物在抑制雄激素依赖型肿瘤的生长(如乳腺癌等)方面具有一定的作用,因此理论上葡萄籽提取物可以抑制青少年后期由于雌激素产生的骨骺闭合现象。

目的:观察葡萄籽提取物对大鼠生长板软骨细胞凋亡及骨骺闭合的影响。
方法:①体外实验:取对数生长期的大鼠胫骨及股骨生长板软骨细胞,分组培养:正常对照组、模型对照组(加入17β雌二醇诱导细胞凋亡)、阳性对照组(加入来曲唑与17β雌二醇)、葡萄籽提取物组(加入17β雌二醇和10 µg/mL葡萄籽提取物)、Caspase-9抑制剂组(加入17β雌二醇和Caspase-9抑制剂)、Caspase-9激动剂组(加入17β雌二醇和Caspase-9激动剂),培养48 h后,采用流式细胞术检测细胞凋亡。②体内实验:将30只3月龄SD大鼠随机分为模型对照组、阳性对照组及药物低、中、高剂量组,每组5只,均皮下注射17β雌二醇(3次/周)建立骨骺闭合模型,阳性对照组灌胃给予来曲唑,药物低、中、高剂量组分别灌胃给予0.05,0.2,0.8 g/kg的葡萄籽提取物,1次/d,直至模型对照组大鼠胫骨平台骨骺闭合2/3以上停药,观察各组大鼠胫骨长度。将18 只SD大鼠随机分为模型对照组、阳性对照组、药物中剂量组,每组6只,按照如上方法处理,连续给药1.5个月后,Western blot检测大鼠胫骨生长板软骨Caspase-9蛋白表达。

结果与结论:①体外实验:17β雌二醇可诱发生长板软骨细胞的凋亡,而来曲唑、葡萄籽提取物与Caspase-9抑制剂均可抑制生长板软骨细胞的凋亡;②体内实验:当模型对照组大鼠胫骨平台骨骺闭合2/3以上时,阳性对照组、药物中剂量组骨骺闭合数量少于模型对照组(P < 0.05),且胫骨长度大于模型对照组(P < 0.05),胫骨生长板软骨Caspase-9蛋白表达低于模型对照组(P < 0.05);③结果表明:适宜浓度的葡萄籽提取物可有效抑制生长板软骨细胞的凋亡并延迟骨骺闭合,具有促进骨骼生长的潜能。

https://orcid.org/0009-0006-1970-4608(宁桃丽)

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

关键词: 葡萄籽提取物, 生长板软骨细胞, 细胞凋亡, 骨骺闭合, Casepase-9

Abstract: BACKGROUND: Grape seed extract has been shown to be effective in inhibiting the growth of androgen-dependent tumors (e.g., breast cancer), and thus grape seed extract could theoretically inhibit epiphyseal closure induced by estrogen in late adolescence.
OBJECTIVE: To screen the effects of grape seed extract on apoptosis of growth plate chondrocytes and epiphyseal closure in rats. 
METHODS: (1) In vitro experiment: Growth plate chondrocytes from rat large tibia and femur at logarithmic growth stage were obtained and cultured in groups: normal control group, model control group (adding 17β-estradiol to induce apoptosis), positive control group (adding letrozole and 17β-estradiol), grape seed extract group (adding 17β-estradiol and 10 µg/mL grape seed extract), Caspase-9 inhibitor group (adding 17β-estradiol and Caspase-9 inhibitor), Caspase-9 agonist group (adding 17β-estradiol and Caspase-9 agonist). Cell apoptosis was detected by flow cytometry after 48 hours of culture. (2) In vivo experiment: Thirty 3-month-old Sprague-Dawley rats were randomly divided into model control group, positive control group and low-, medium- and high-dose groups, with five rats in each group. All rats were injected subcutaneously with 17β-estradiol (3 times per week) to establish epiphyseal closure models, followed by intragastric administration of letrozole in positive control group and 0.05, 0.2 and 0.8 g/kg grape seed extract in low-, medium- and high-dose groups, respectively, once a day until over 2/3 of the epiphyseal plate in the model control group was closed. The length of the tibia was then observed. Another 18 Sprague-Dawley rats were randomly divided into model control group, positive control group, and medium-dose group, with 6 rats in each group, treated as above for 1.5 continuous months. The expression of Caspase-9 protein in rat growth plate cartilage was detected by western blot.
RESULTS AND CONCLUSION: (1) In vitro experiment: 17β-estradiol could induce apoptosis in growth plate chondrocytes, and letrozole, grape seed extract, and caspase-9 inhibitors could all inhibit apoptosis in growth plate chondrocytes. (2) In vivo experiment: When more than 2/3 of the epiphyseal plate in the model control group was closed, the number of rats with epiphysis closure in the positive control and medium-dose groups was less than that in the model control group (P < 0.05), and the tibial length was longer than that in the model control group (P < 0.05), and the Caspase-9 protein expression in the tibial growth plate was lower than that in the model control group (P < 0.05). To conclude, the appropriate dose of grape seed extract can effectively inhibit the apoptosis of growth plate chondrocytes and delay epiphyseal closure, which has the potential to promote bone growth.

Key words: grape seed extract, growth plate chondrocyte, apoptosis, epiphyseal closure, Casepase-9

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