In order to develop a systemically administered safe and effective nonviral gene delivery system, cellular interactions and plasmid DNA transfection with poly(ethylene glycol)-modified (PEGylated) gelatin nanoparticles were examined. The DNA-containing nanoparticles were prepared by a controlled water-ethanol solvent displacement method. The nanoparticles were characterized for particle size, s...

Functionalization and evaluation of PEGylated Carbon Nanotubes as novel Drug delivery for methotrexateChetana D. Modi, Suketu J. Patel, Alpesh B. Desai, R. S. Murthy

The obstacles to the development of therapeutic aptamers for systemic inflammatory diseases, such as nuclease degradation and renal clearance, have not been fully overcome. Here, we report a novel PEGylation method, sbC-PEGylation, which improves the pharmacokinetic properties of RNA aptamers that act against interleukin-17A (IL-17A) in mice and monkeys. sbC-PEGylated aptamers were synthesized ...

Attachment of poly(ethylene glycol) (PEG) to proteins, peptides, liposomes, drugs, and nanoparticles can improve pharmaceutical pharmacokinetic properties and enhance in vivo biological efficacy. Since the first PEGylated product was approved by the Food and Drug Administration in 1990, increasing numbers of PEGylated compounds have entered clinical use. Successful clinical development of PEGyl...

This paper reports a case of pegylated interferon-associated retinopathy in a patient with chronic hepatitis C. A 32-year-old female with chronic hepatitis C undergoing pegylated interferon and ribavirin combination therapy complained of visual blurring. Features of interferon-associated retinopathy, including ocular complications such as cotton wool spots, retinal hemorrhages, macular edema, a...

A novel preparation for polyethylene glycol (PEG) derivatives and chromatographic separation procedure of the PEGylated recombinant human granulocyte colony-stimulating factor (rhG-CSF) were designed to evaluate the reproducibility and scalability at large laboratory-scale level. The new "PEG-pellet" PEGylation mode was successfully applied to control the pH fluctuation during the conjugation r...

Doxorubicin (DOX) is an anthracycline widely used for the treatment of solid and hematological tumors. The aim of this study was to assess the adverse event profiles of conventional DOX and liposomal DOX. This is the first study to evaluate the effect of a liposomal formulation of DOX using spontaneous reporting system (SRS) databases. The SRS used was the US Food and Drug Administration Advers...

Frequent side effects of radical treatment modalities and the availability of novel diagnostics have raised the interest in focal therapies for localized prostate cancer. To improve the selectivity and therapeutic efficacy of such therapies, we developed a minimally invasive procedure, based on a novel polymeric photosensitizer prodrug sensitive to urokinase-like plasminogen activator (uPA). Th...

The use of conductive nanoparticles (NPs) was previously proposed as a way to locally amplify the electric field (EF) intensity at cell membrane enhance electroporation. To achieve this, close distance between NPs and is mandatory. Here, new method improve contact surface using effects pulses (electrophoretic forces) explored. two types are analyzed alone or combined in two-pulse-train protocol...

Gene-mediated enzyme prodrug therapy (GDEPT) seeks to increase the therapeutic index of anti-neoplastic agents by promoting selective activation of relatively nontoxic drug derivatives at sites of specific enzyme expression. Glucuronide prodrugs are attractive for GDEPT due to their low toxicity, bystander effect in the interstitial tumor space and the large range of possible glucuronide drug t...