Polymer Nanoparticle Transfection
Polymer Nanoparticle Transfection - Related Videos
10:16
Electroactive Polymer Nanoparticles Exhibiting Photothermal Properties
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Cited by 5 •
2016
A protocol is presented for the synthesis and preparation of nanoparticles consisting of electroactive polymers.
10:58
Combinatorial Synthesis of and High-throughput Protein Release from Polymer Film and Nanoparticle Libraries
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Cited by 7 •
2012
This method describes the combinatorial synthesis of biodegradable polyanhydride film and nanoparticle libraries and the high-throughput detection of protein release from these libraries.
09:45
Photodynamic Therapy with Blended Conducting Polymer/Fullerene Nanoparticle Photosensitizers
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Cited by 2 •
2015
This protocol describes a method for the fabrication of conducting polymer nanoparticles blended with fullerene. These nanoparticles were investigated for their potential use as a next generation photosensitizers for Photodynamic Therapy (PDT).
07:41
Advanced Compositional Analysis of Nanoparticle-polymer Composites Using Direct Fluorescence Imaging
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Cited by 1 •
2016
Here we present a reliable method to monitor the incorporation of nanoparticles into a polymer host matrix via swell encapsulation. We show that the surface concentration of cadmium selenide quantum dots can be accurately visualized through cross-sectional fluorescence imaging.
08:35
Therapeutic Gene Delivery and Transfection in Human Pancreatic Cancer Cells using Epidermal Growth Factor Receptor-targeted Gelatin Nanoparticles
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Cited by 28 •
2012
Type B gelatin-based engineered nanovectors system (GENS) was developed for systemic gene delivery and transfection in the treatment of pancreatic cancer. By modification with epidermal growth factor receptor (EGFR) specific peptide on the surface of nanparticles, they could target on EGFR receptor and release plasmid under reducing environment, such as high intracellular glutathione concentrations.
FAQs
Cargo loading determines how polymer nanoparticles protect and transport nucleic acids. DNA or RNA may be encapsulated within the particle or attached through electrostatic interactions, helping shield it from degradation. After cellular uptake by endocytosis, intracellular conditions can promote release, making the nucleic acid available for gene-expression manipulation.
Particle design affects the balance between delivery performance and cellular toxicity. Researchers can tune polymer composition, particle size, surface properties, and cargo loading to alter how effectively particles enter cells and release their contents. In bioengineering, changing these variables provides a way to optimize nucleic-acid delivery for a particular experimental or development goal.
Compared with viral-vector delivery, the polymer approach offers a tunable carrier platform rather than relying on a viral vector. Researchers can adjust polymer composition, size, surface properties, and cargo loading while pursuing controlled changes in gene expression. This makes it useful for studying delivery design and for developing systems in which efficiency and cellular toxicity must be considered together.
A basic workflow begins by pairing a selected polymer carrier with DNA or RNA and determining whether the cargo will be encapsulated or electrostatically bound. The resulting particles are then introduced to cells, where uptake can occur through endocytosis. Intracellular conditions may subsequently release the cargo, enabling the intended manipulation of gene expression.
Researchers can use polymer nanoparticle transfection to deliver nucleic acids for gene silencing, protein expression, and genome-editing studies. The same delivery concept also supports vaccine and therapeutic delivery-system development. The appropriate polymer and cargo design depends on whether the desired outcome is reduced gene expression, production of a protein, or another controlled change in cellular activity.
Bioengineering uses this approach to connect material design with cellular control. By modifying polymer composition, particle size, surface properties, and cargo loading, researchers can investigate how carrier features affect uptake, protection, release, delivery efficiency, and cellular toxicity. These relationships are relevant to both laboratory gene-expression studies and the development of vaccine or therapeutic delivery systems.