Rambutan-like silica nanoparticles at tailored particle sizes for plasmid DNA delivery
Source abstract
Abstract
Silica nanoparticles (SNPs) have attracted widespread attention as biocompatible and efficient nanocarriers for gene delivery. The physicochemical properties of SNPs such as particle size, pore size, nanotopography and surface chemistry play important roles in regulating the intracellular delivery performance of genetic molecules. SNPs engineered with a rambutan-like spiky surface (Ram-SNPs) have shown significantly enhanced transfection efficiency for plasmid DNA (pDNA). However, the impact of the particle size of Ram-SNPs on their pDNA delivery performance has not been reported. Here, we synthesized Ram-SNPs with tailored nanoparticles sizes of 180, 330 and 520 nm by controlling the polymerization of resorcinol–formaldehyde and silica in a surfactant-free synthesis system. The polyethylenimine modified Ram-SNPs were loaded with pDNA molecules for intracellular delivery. Smaller sized Ram-SNPs demonstrated slightly weaker binding with pDNA, enhanced cellular uptake and significantly higher transfection efficiency than the larger particles. This structure–function relationship is different from other SNPs used for pDNA delivery. The cellular uptake mechanism by Ram-SNPs was also investigated. These findings provide useful guidance for the rational design of silica-based non-viral vectors for efficient gene delivery applications.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: RNA Interference and Gene Delivery · Advanced biosensing and bioanalysis techniques · Nanopore and Nanochannel Transport Studies
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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