conclusions eudragit coated nanoparticle of chitosan is an efficient choice for oral delivery of dna to upper part of gi tract. results the mean size and zeta potential of particles were 300 ± 4 nm and 14 ± 0.5 mv, respectively. encapsulation of this system was 89.6 ± 1.2%. dna release from batches was less than 12% at ph = 5.2 and more than 60% at ph = 6.8 with significant difference of p < 0....

Radioresistance/Gene delivery/HRE/GDEPT/Bioreductive drugs Studies have shown that reduced oxygen tension (hypoxia) in solid tumours adversely affects the outcome of radiotherapy. Despite being an independent prognostic marker of poor treatment outcome, hypoxia represents a physiological difference that can be utilised for selective cancer treatment. Since severe hypoxia (pO2< 0.3%; 2.5 mmHg) d...

Fe₃O₄ nanoparticles (NPs), the most traditional magnetic nanoparticles, have received a great deal of attention in the biomedical field, especially for targeted drug/gene delivery systems, due to their outstanding magnetism, biocompatibility, lower toxicity, biodegradability, and other features. Naked Fe₃O₄ NPs are easy to aggregate and oxidize, and thus are often made with various coatings to ...

Objective(s): Nanocarriers are drug delivery vehicles, which have attracted the attention of researchers in recent years, particularly in cancer treatment. The encapsulation of anticancer drugs using protein nanocages is considered to be an optimal approach to reducing drug side-effects and increasing the bioavailability of anticancer drugs. Epirubicin (EPR) is an active chemotherapeutic medica...

Gene therapy provides an efficient approach for treatment of cardiovascular disease. To realize the therapeutic effect, both efficient delivery to the target cells and sustained expression of transgenes are required. Ultrasound targeted microbubble destruction (UTMD) technique has become a potential strategy for target-specific gene and drug delivery. When gene-loaded microbubble is injected, t...

TRANSFERRIN RECEPTOR TARGETED DELIVERY OF SIRNAFOR GENE THERAPY

objective(s): one applications of nanotechnology is in the area of medicine which is called nanomedicine. primary instruments in nanomedicine can help us to detect diseases and used for drug delivery to inaccessible areas of human tissues. an important issue in simulating the motion of nanoparticles is modeling blood flow as a newtonian or non-newtonian fluid. sometimes blood flow is simulated ...

Targeted gene transduction to organs and tissues of interest is the ultimate goal of therapeutic gene delivery. Lentiviral vectors (LVs) are powerful tools for stable gene delivery but their integration into undesired cell types poses a serious safety concern for their use in the clinic. Here we report the development of a new dual-targeted LV that can preferentially home to and express in pros...

chitosan-graft-polyethylenimine (chi-g-pei) copolymer has been used for theimprovement of low transfection efficiency of chitosan. the present study aims to test thepulmonary toxicity and efficiency of chi-g-pei as an aerosol gene carrier. mice were exposedto aerosol containing green-fluorescent protein (gfp)-polyethylenimine (pei) or gfp-chig-pei complexes for 30 min during the development of ...

Ligand-conjugated polymer (polyplex) gene delivery vectors have strong potential as targeted, in vivo gene transfer vehicles; however, they are currently limited by low delivery efficiency. A number of barriers to polyplex-mediated delivery have been previously identified, including receptor binding, internalization, endosomal escape, and nuclear localization. However, based on understanding of...