Journal
JOURNAL OF BIOMEDICINE AND BIOTECHNOLOGY
Volume -, Issue -, Pages -Publisher
HINDAWI LTD
DOI: 10.1155/2011/148763
Keywords
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Funding
- National Natural Science Foundation of China [30811120440, 30911120261]
- Ministry of Science and Technology of China [S2011GR0323]
- Shanghai International Collaboration Foundation [08410701800]
- Canadian Institutes of Health Research [CCI-92212, CCL-99636, CCM 104888]
- Fonds de la Recherche en sante du Quebec (FRSQ)
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50kDa chitosan was conjugated with folate, a specific tissue-targeting ligand. Nanoparticles such as chitosan-DNA and folate-chitosan-DNA were prepared by coacervation process. The hydrodynamic intravenous injection of nanoparticles was performed in the right posterior paw in normal and arthritic rats. Our results demonstrated that the fluorescence intensity of DsRed detected was 5 to 12 times more in the right soleus muscle and in the right gastro muscle than other tissue sections. beta-galactosidase gene expression with X-gal substrate and folate-chitosan-plasmid nanoparticles showed best coloration in the soleus muscle. Treated arthritic animals also showed a significant decrease in paw swelling and IL-1 beta and PGE(2) concentration in serum compared to untreated rats. This study demonstrated that a nonviral gene therapeutic approach using hydrodynamic delivery could help transfect more efficiently folate-chitosan-DNA nanoparticles in vitro/in vivo and could decrease inflammation in arthritic rats.
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