| Title | Receptor-mediated gene delivery using PAMAM dendrimers conjugated with peptides recognized by mesenchymal stem cells |
| Publication Type | Journal Article |
| 2010 |
| Authors | Santos, JL, Pandita, D, Rodrigues, J, Pêgo, AP, Granja, PL, Balian, G, Tomás, H |
| Journal | Molecular PharmaceuticsMol. Pharm. |
| Volume | 7 |
| Issue | 3 |
| Pagination | 763 - 774 |
| Date Published | 2010/// |
| 15438384 (ISSN) |
| animal cell, animal experiment, animal tissue, Animals, article, asparaginylserylmethionylisoleucylalanylhistidylasparaginyllysylthreonylarginylmethionylhistidylglycylglycylglycylserylcysteine, Cell recognition, cell survival, Cells, Cultured, controlled study, Cytotoxicity, dendrimer, Dendrimers, DNA, DNA binding, Electrophoresis, Agar Gel, flow cytometry, Gene delivery, gene targeting, Gene Transfer Techniques, gene vector, genetic transfection, Genetic Vectors, Green Fluorescent Proteins, male, Mesenchymal stem cell, Mesenchymal Stem Cells, Models, Theoretical, multigene family, nonhuman, PAMAM dendrimers, peptide, Peptides, plasmid DNA, polyamidoamine, priority journal, rat, Rats, Rats, Wistar, serylglycylhistidylglutaminylleucylleucylleucylasparaginyllysylmethionylprolylasparaginylglycylglycylglycylserylcysteine, unclassified drug, Zeta potential |
| As mesenchymal stem cells (MSCs) can differentiate into multiple cell types, the delivery of exogenous genes to this type of cell can be an important tool in tissue regeneration and engineering. However transfection of MSCs using nonviral gene delivery vectors is difficult, the development of more efficient and safe DNA vehicles being necessary. Moreover, specific transfection of MSCs may be required to avoid unwanted side effects in other tissues. In this study, a novel family of gene delivery vectors based on poly(amidoamine) (PAMAM) dendrimers functionalized with peptides displaying high affinity toward MSCs was prepared. The vectors were characterized with respect to their ability to neutralize, bind and compact plasmid DNA (pDNA). The complexes formed between the vectors and pDNA were analyzed concerning their size, -potential, capacity of being internalized by cells and transfection efficiency. These new vectors exhibited low cytotoxicity, receptor-mediated gene delivery into MSCs and transfection efficiencies superior to those presented by native dendrimers and by partially degraded dendrimers. © 2010 American Chemical Society. |
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