Transplantation of genetically engineered mesenchymal stem cells improves cardiac function in rats with myocardial infarction: Benefit of a novel nonviral vector, cationized dextran

Jun Ichiro Jo, Noritoshi Nagaya, Yoshinori Miyahara, Masaharu Kataoka, Mariko Harada-Shiba, Kenji Kangawa, Yasuhiko Tabata

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77 Citations (Scopus)


It is expected that mesenchymal stem cells (MSCs) will be a cell source for cardiac reconstruction because of their differentiation potential and ability to supply growth factors. However, poor viability at the transplanted site often hinders the therapeutic potential of MSCs. Here, in a trial designed to address this problem, a non-viral carrier of cationized polysaccharide is introduced for genetic engineering of MSCs. Spermine-introduced dextran of cationized polysaccharide (spermine-dextran) was internalized into MSCs by way of a sugar-recognizable receptor to enhance the expression level of plasmid deoxyribonucleic acid (DNA). When genetically engineered by the spermine-dextran complex with plasmid DNA of adrenomedullin (AM), MSCs secreted a large amount of AM, an anti-apoptotic and angiogenic peptide. Transplantation of AM gene-engineered MSCs improved cardiac function after myocardial infarction significantly more than MSCs alone. Thus, this genetic engineering technology using the non-viral spermine-dextran is a promising strategy to improve MSC therapy for ischemic heart disease.

Original languageEnglish
Pages (from-to)313-322
Number of pages10
JournalTissue Engineering
Issue number2
Publication statusPublished - 2007 Feb 1
Externally publishedYes


ASJC Scopus subject areas

  • Engineering(all)

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