Therapeutic efficiency of folated poly(ethylene glycol)-chitosan-graft-polyethylenimine-Pdcd4 complexes in H-ras12V mice with liver cancer.

Abstract

BACKGROUND:

Chitosan and chitosan derivatives have been proposed as alternative and biocompatible cationic polymers for nonviral gene delivery. However, the low transfection efficiency and low specificity of chitosan is an aspect of this approach that must be addressed prior to any clinical application. In the present study, folated poly(ethylene glycol)-chitosan-graft-polyethylenimine (FPCP) was investigated as a potential folate receptor-overexpressed cancer cell targeting gene carrier.

METHODS:

The FPCP copolymer was synthesized in two steps. In the first step, folate-PEG was synthesized by an amide formation reaction between the activated carboxyl groups of folic acid and the amine groups of bifunctional poly(ethylene glycol) (PEG). In the second step, FPCP was synthesized by an amide formation reaction between the activated carboxyl groups of folate-PEG and amine groups of CHI-g-polyethyleneimine (PEI). The composition of FPCP was characterized by ¹H nuclear magnetic resonance.

RESULTS:

FPCP showed low cytotoxicity in various cell lines, and FPCP-DNA complexes showed good cancer cell specificity as well as good transfection efficiency in the presence of serum. Further, FPCP-Pdcd4 complexes reduced tumor numbers and progression more effectively than PEI 25 kDa in H-ras12V liver cancer mice after intravenous administration.

CONCLUSION:

Our data suggest that FPCP, which has improved transfection efficiency and cancer cell specificity, may be useful in gene therapy for liver cancer.

• Authors: You-Kyoung Kim, Arash Minai-Tehrani, Jae-Ho Lee, Chong-Su Cho, Myung-Haing Cho, Hu-Lin Jiang
• Journal: International journal of nanomedicine (Int J Nanomedicine) Vol. 8 Pg. 1489-98 ( 2013) ISSN: 1178-2013 [Electronic] New Zealand
• PMID: 23620665 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't)

Chemical References

• Apoptosis Regulatory Proteins
• Drug Carriers
• RNA-Binding Proteins
• chitosan-graft-polyethylenimine
• poly(ethylene glycol)-folate
• Polyethylene Glycols
• Polyethyleneimine
• DNA
• Chitosan
• Folic Acid

Topics

• Animals
• Apoptosis Regulatory Proteins (genetics, metabolism)
• Chitosan (analogs & derivatives, chemistry, pharmacology)
• DNA (genetics)
• Drug Carriers (chemistry, pharmacology)
• Folic Acid (analogs & derivatives, chemistry, pharmacology)
• Genes, ras
• Hep G2 Cells
• Humans
• Liver Neoplasms (drug therapy)
• Magnetic Resonance Spectroscopy
• Male
• Mice
• Mice, Transgenic
• Nanoparticles (administration & dosage, chemistry)
• Polyethylene Glycols (chemistry, pharmacology)
• Polyethyleneimine (analogs & derivatives, chemistry, pharmacology)
• RNA-Binding Proteins (genetics, metabolism)
• Random Allocation
• Transfection
• Xenograft Model Antitumor Assays