中国组织工程研究 ›› 2019, Vol. 23 ›› Issue (5): 809-814.doi: 10.3969/j.issn.2095-4344.0575

• 干细胞基础实验 basic experiments of stem cells • 上一篇    下一篇

长效、中效、短效3种激素影响miR-672-5p在大鼠成骨细胞的差异表达

翟 沛1,李鹏飞1,梁正辉1,曾建春1,蔡国雄3,曾意荣2,樊粤光2   

  1. 1广州中医药大学第一临床医学院,广东省广州市   5104052广州中医药大学第一附属医院骨科,广东省广州市   5104053河源市中医院,广东省河源市   517000
  • 修回日期:2018-07-30 出版日期:2019-02-18 发布日期:2019-02-18
  • 通讯作者: 樊粤光,教授,广州中医药大学第一附属医院骨科,广东省广州市 510405
  • 作者简介:翟沛,男,1989年生,河南省安阳市人,广州中医药大学在读博士,主要从事髋膝关节疾病的研究。
  • 基金资助:

    国家自然科学基金(81373652)

Differential expression of miR-672-5p in rat osteoblasts after intervention by long-acting, intermediate-acting and short-acting hormones

Zhai Pei1, Li Pengfei1, Liang Zhenghui1, Zeng Jianchun1, Cai Guoxiong3, Zeng Yirong2, Fan Yueguang2   

  1. 1First Clinic Medical School, Guangzhou University of Chinese Medicine, Guangzhou 510405, Guangdong Province, China; 2Department of Orthopedics, the First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou 510405, Guangdong Province, China; 3Heyuan Hospital of Traditional Chinese Medicine, Heyuan 517000, Guangdong Province, China
  • Revised:2018-07-30 Online:2019-02-18 Published:2019-02-18
  • Contact: Fan Yueguang, Professor, Department of Orthopedics, the First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou 510405, Guangdong Province, China
  • About author:Zhai Pei, Doctoral candidate, First Clinic Medical School, Guangzhou University of Chinese Medicine, Guangzhou 510405, Guangdong Province, China
  • Supported by:

    the National Natural Science Foundation of China, No. 81373652

摘要:

文章快速阅读:

文题释义:
糖皮质激素分类:
主要依据它们在体内作用时间的长短来划分:短效激素为8-12 h;中效激素为18-36 h;长效激素为36-54 h。
成骨细胞:是骨形成的主要功能细胞,负责骨基质的合成、分泌和矿化。骨不断地进行着重建,骨重建过程包括破骨细胞贴附在旧骨区域,分泌酸性物质溶解矿物质,分泌蛋白酶消化骨基质,形成骨吸收陷窝;其后,成骨细胞移行至被吸收部位,分泌骨基质,骨基质矿化而形成新骨。破骨与成骨过程的平衡是维持正常骨量的关键。

 

摘要
背景:
前期研究中发现,甲泼尼龙干预后miR-672-5p在大鼠成骨细胞的表达上调,提示miR-672-5p 可能在激素性股骨头坏死中发挥作用。
目的:分析长效、中效、短效3种激素影响miR-672-5p在大鼠成骨细胞的差异表达。  
方法:SD大鼠原代成骨细胞体外培养,取第3代大鼠成骨细胞加入DMEM高糖培养基,并分别加入终浓度为1×10-5 mol/L的地塞米松(长效)、甲泼尼龙(中效)及氢化可的松(短效),并设空白对照组;4组分别细胞总RNA提取,反转录反应,定量PCR反应;算出2-??Ct值评估miR-672-5p的表达量。
结果与结论:①与空白组相比,3组激素的miR-672-5p在大鼠成骨细胞的表达均显示出上调,其中甲泼尼龙组为2.35倍,提示表达最高;甲泼尼龙组miR-672-5p表达显著高于氢化可的松组和地塞米松组(均P < 0.05),但氢化可的松组与地塞米松组比较差异无显著性意义;②结果说明,中效激素的miR-672-5p在大鼠成骨细胞的表达量最大,提示甲泼尼龙在激素性股骨头坏死中可能起重要角色。


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
ORCID:0000-0002-2183-6961(翟沛)

关键词: 糖皮质激素, 成骨细胞, 激素性股骨头坏死, miR-672-5p, 地塞米松, 甲泼尼龙, 氢化可的松, 短效激素, 中效激素, 长效激素, 组织构建

Abstract:

BACKGROUND: Preliminary study has found that miR-672-5p can up-regulate osteoblast expression in rats, suggesting that miR-672-5p may participate in osteonecrosis of the femoral head.
OBJECTIVE: To investigate the differential expression of miR-672-5p in osteoblasts in rats after intervention by long-acting, intermediate- acting and short-acting hormones.
METHODS: Primary osteoblasts of Sprague-Dawley rats were cultured in vitro. The third generation rat osteoblasts were added into DMEM high glucose medium, and then 1x10-5 mol/L methylprednisolone, hydrocortisone and dexamethasone were added, respectively. The cells cultured with normal DMEM were used as blank control group. Total RNA extraction was performed for reverse transcription reaction and quantitative PCR. The 2-ΔΔCT value was calculated to evaluate miR-672-5p expression.
RESULTS AND CONCLUSION: Compared with the blank control group, the expression level of miR-672-5p in the other three groups was up-regulated, and that in the methylprednisolone group was 2.35 times, showing the highest level. The expression level of miR-672-5p in the methylprednisolone group was significantly higher than that in the hydrocortisone and dexamethasone groups (both P < 0.05). There was no significant difference between hydrocortisone and dexamethasone groups. These results indicate that the expression of miR-672-5p in rat osteoblasts by intermediate-acting hormone is the highest, which suggests that methylprednisolone may play an important role in steroid-associated osteonecrosis of the femoral head.


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

Key words: Glucocorticoids, Osteoblasts, Femur Head Necrosis, Methylprednisolone, Tissue Engineering

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