Chinese Journal of Tissue Engineering Research ›› 2016, Vol. 20 ›› Issue (25): 3680-3686.doi: 10.3969/j.issn.2095-4344.2016.25.005

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 Effect of transforming growth factor beta1 on proliferation and secretion of osteoblasts on porous tantalum/MG63 osteoblast-like cell composites

Pang Hai-tao1, Gan Hong-quan2, Wang Qian3, Cui Yi-shuang4, Lai Zhen-quan4, Zhou Guo-long4,      Pan Xiang-yu4, Wang Zhi-qiang2, Li Qi-jia4   

  1. 1Department of Hand Surgery, Affiliated Orthopedics Hospital of North China University of Science and Technology (Tangshan second Hospital), Tangshan 063000, Hebei Province, China; 2Department of Orthopedics, Affiliated Hospital of North China University of Science and Technology, Tangshan 063000, Hebei Province, China; 3Basic Medical School, 4Medical Experimental Center, North China University of Science and Technology, Tangshan 063000, Hebei Province, China
  • Received:2016-04-14 Online:2016-06-17 Published:2016-06-17
  • Contact: Li Qi-jia, Professor, Master’s supervisor, Medical Experimental Center, North China University of Science and Technology, Tangshan 063000, Hebei Province, China
  • About author:Pang Hai-tao, Master, Attending physician, Department of Hand Surgery, Affiliated Orthopedics Hospital of North China University of Science and Technology (Tangshan second Hospital), Tangshan 063000, Hebei Province, China
  • Supported by:

    the Project Supported by State Commission of Science Technology of China, No. 2012BAE06B03; the Science and Technology Project of Hebei Province, No. 16277776D; the Medical Research Key Planning Project of Hebei Province, No. 20160225; Supported by Research Fund for the Doctoral Program of North China University of Science and Technology

Abstract:

BACKGROUND: Previous studies have demonstrated that the Chinese porous tantalum made in China has non-toxicity and good biocompatibility, which can promote osteogenesis.        

OBJECTIVE: To investigate the effects of transforming growth factor β1 on proliferation, cell cycle and secretion of osteoblasts on porous tantalum/MG63 osteoblast-like cell composites.
METHODS: Passage 3 MG63 osteoblast-like cell suspension (1×109/L) was seeded onto the porous tantalum, then the cell composites were inoculated in the medium with 0, 0.5, 5 and 10 µg/L transforming growth factor β1, respectively. The proliferation of osteoblasts was detected by cell counting kit-8 assay at 1-13 days after inoculation; the cell morphology and ultrastructure observed by scanning electron microscope and transmission electron microscopy; and level of collagen type I detected by enzyme-linked immunosorbent assay.

RESULTS AND CONCLUSON: 0.5, 5, 10 µg/L transforming growth factor β1 could promote the osteoblast proliferation, and cell proliferation in the 5 µg/L transforming growth factor β1 group was higher than that in the other groups; in the 5 µg/L transforming growth factor β1 group, laminated osteoblasts adhered on the surface and grew into inner of porous tantalum, which extended more pseudopodia toward the scaffold; osteoblasts-secreted matrix could cover the scaffold and numerous rough endoplasmic reticulum, free ribosomes, dense mitochondria, Golgi apparatus as well as matrix vesicles could be found in the cytoplasm. In addition, the level of collagen type I in the 5 µg/L transforming growth factor β1 group was significantly higher than that in the other groups (P < 0.05). These results indicate that transforming growth factor β1 can promote proliferation, and collagen type I secretion of osteoblasts on porous tantalum/MG63 osteoblast-like cell composites, and the optimum mass concentration of transforming growth factor β1 is 5 µg/L.

 

Key words: Osteoblasts, Tantalum, Transforming Growth Factor beta1, Tissue Engineering

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