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Gene Transfection toward Spheroid Cells on Micropatterned Culture Plates for Genetically-modified Cell Transplantation
Published on: July 31, 2015
Folate-equipped nanolipoplexes mediated efficient gene transfer into human epithelial cells
Emmanuel Mornet1, Nathalie Carmoy, Céline Lainé
1INSERM U1078, IFR 148 ScInBIoS, Université de Bretagne Occidentale, 46 rue Félix Le Dantec, CS 51819, 29218 Brest Cedex 2, France. tristan.montier@univ-brest.fr.
International Journal of Molecular Sciences
|January 25, 2013
Summary
Synthetic delivery systems offer a safer alternative for gene therapy. Folate-modified lipid nanoparticles show promise for non-toxic, cell-specific gene delivery by targeting folate receptors.
Area of Science:
- Biotechnology
- Nanomedicine
- Gene Therapy
Background:
- Recombinant viral vectors for gene therapy can cause adverse effects like immunogenicity and oncogenicity.
- Non-viral nanocarriers face challenges in optimizing transgene expression in target cells.
- Folate-based modifications offer a strategy to enhance cellular uptake and delivery.
Purpose of the Study:
- To develop novel folate-based lipid complexes for enhanced gene delivery.
- To evaluate the efficacy and safety of these folate-modified nanocarriers.
- To investigate the mechanism of cellular uptake mediated by folate receptors.
Main Methods:
- Synthesis and characterization of neutral folate-modified lipid formulations.
- In vitro comparison of folate-based complexes with traditional lipoplexes.
- Assessment of cytotoxicity and transgene expression levels.
- In vivo transfection studies to evaluate gene delivery efficiency.
Main Results:
- Folate-modified lipid formulations achieved comparable transgene expression to lipoplexes without observed cytotoxicity.
- Folate receptor-mediated endocytosis was identified as a key mechanism for gene delivery.
- Adding free folate significantly reduced luciferase expression, confirming receptor-specific uptake.
- In vivo studies demonstrated successful luciferase transgene expression using folate-modified lipids.
Conclusions:
- Modification of lipids with folate residues enhances non-toxic, cell-specific gene delivery.
- Folate-based nanocarriers represent a promising alternative to viral vectors in gene therapy.
- Targeting folate receptors is an effective strategy for improving gene delivery efficiency.
