Chinese Journal of Tissue Engineering Research ›› 2019, Vol. 23 ›› Issue (5): 809-814.doi: 10.3969/j.issn.2095-4344.0575

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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

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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