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DNA/PEI nano-particles for gene delivery of rat bone marrow stem cells

  • Hyun Hee Ahn
  • , Min Suk Lee
  • , Mi Hee Cho
  • , Yu Na Shin
  • , Jung Hwa Lee
  • , Kyung Sook Kim
  • , Moon Suk Kim*
  • , Gilson Khang
  • , Ki Chul Hwang
  • , Il Woo Lee
  • , Scott L. Diamond
  • , Hai Bang Lee
  • *Corresponding author for this work
  • Korea Research Institute of Chemical Technology
  • The Catholic University of Korea
  • Jeonbuk National University
  • Yonsei University
  • University of Pennsylvania

Research output: Contribution to journalJournal articlepeer-review

Abstract

The objective of this study was to deliver the DNA/PEI nano-particles into rat bone marrow stem cells (rBMSCs). The formation of nano-particles from DNA and PEI was performed by the adding of the PEI solution to the DNA solution. Gel retardation assay showed the optimal N/P charge ratio where PEI completely binds DNA. The particle size of DNA/PEI complexes measured by dynamic light scattering (DLS) showed diameters of about 200-400 nm. These results indicated that DNA was sufficiently condensed by PEI to give DNA/PEI nano-particles and the optimal packing was achieved at N/P charge ratio of 4. From AFM image, PEI completely condensed DNA into round-shaped. The diameters of the DNA/PEI nano-particles observed by AFM were in good agreement with the results of the DLS. rBMSCs viability in the presence of DNA/PEI nano-particles was evaluated by means of the MTT assay. The DNA/PEI nano-particles were transfected into rBMSCs. After gene transfection, enhanced green fluorescence protein (EGFP) was monitored by flow cytometry. Naked DNA showed no EGFP expression, whereas delivery of DNA/PEI nano-particles to rBMSCs showed EGFP expression and resulted in 2-10% transfection.

Original languageEnglish
Pages (from-to)116-120
Number of pages5
JournalColloids and Surfaces A: Physicochemical and Engineering Aspects
Volume313-314
DOIs
StatePublished - 2008.02.1

Keywords

  • Bone marrow stem cell
  • Gene delivery
  • Nano-particle
  • Transfection

Quacquarelli Symonds(QS) Subject Topics

  • Engineering - Petroleum
  • Engineering - Chemical
  • Chemistry
  • Physics & Astronomy

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