DOI QR코드

DOI QR Code

Enhanced bone morphogenic protein adenoviral gene delivery to bone marrow stromal cells using magnetic nanoparticle

  • Lee, Jung-Tae (Department of Oral and Maxillofacial Surgery, School of Dentistry, Kyungpook National University) ;
  • Jung, Jae-Whan (Department of Biochemistry, Kyungpook National University School of Medicine) ;
  • Choi, Jae-Yong (Department of Biochemistry, Kyungpook National University School of Medicine) ;
  • Kwon, Tae-Geon (Department of Oral and Maxillofacial Surgery, School of Dentistry, Kyungpook National University)
  • 투고 : 2013.03.21
  • 심사 : 2013.05.10
  • 발행 : 2013.06.30

초록

Objectives: This study investigated the question of whether adenoviral magnetofection can be a suitable method for increasing the efficacy of gene delivery into bone marrow stromal cell (BMSC) and for generation of a high level of bone morphogenic protein (BMP) secretion at a minimized viral titer. Materials and Methods: Primary BMSCs were isolated from C57BL6 mice and transduced with adenoviral vectors encoding ${\beta}$ galactosidase or BMP2 and BMP7. The level of BMP secretion, activity of osteoblast differentiation, and cell viability of magnetofection were measured and compared with those of the control group. Results: The expression level of ${\beta}$ galactosidase showed that the cell transduction efficiency of AdLacZ increased according to the increased amount of magnetic nanoparticles. No change in cell viability was observed after magnetofection with 2 ${\mu}L$ of magnetic nanoparticle. Secretion of BMP2 or BMP7 was accelerated after transduction of AdBMP2 and 7 with magnetofection. AdBMP2 adenoviral magnetofection resulted in up to 7.2-fold higher secretion of BMP2, compared with conventional AdBMP2-transduced BMSCs. Magnetofection also induced a dramatic increase in secretion of BMP7 by up to 10-fold compared to the control. Use of only 1 multiplicity of infection (moi) of magnetofection with adenoviral transduction of AdBMP2 or AdBMP7 resulted in significantly higher transgene expression compared to 20 moi of conventional adenoviral transduction. Conclusion: Magnetic particle-mediated gene transudation is a highly efficient method of gene delivery to BMSCs. Magnetofection can lower the amount of viral particles while improving the efficacy of gene delivery.

키워드

참고문헌

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