Hypoxia-inducible factor-1α (HIF-1α) is a crucial transcription factor that plays an important role in the carcinogenesis and development of nasopharyngeal carcinoma. In this research, a novel biodegradable D-α-tocopheryl polyethylene glycol 1000 succinate-b-poly(ε-caprolactone-ran-glycolide) (TPGS-b-(PCL-ran-PGA)) nanoparticle (NP) was prepared as a delivery system for small interfering ribonu...

Developing new easy-to-prepare functional drug delivery nanosystems with good storage stability, low hemotoxicity, as well controllable property, has attracted great attention in recent years. In this work, a cholesterol-based prodrug nanodelivery system is prepared by self-assembly of cholesterol-doxorubicin conjugates (Chol-Dox) and tocopherol polyethylene glycol succinate (TPGS) using thin-f...

We have successfully developed curcumin nanosuspension intended for oral delivery. The main purpose is to improve bioavailability through enhancing its solubility. The nanoparticles were stabilized using various stabilizers, including polyvinyl pyrrolidone (PVP), polyvinyl alcohol (PVA), sodium carboxymethylcellulose (Na-CMC), d-α-tocopheryl polyethylene glycol 1000 succinate (TPGS), and sodium...

The third-generation designer amphiphile/surfactant, "Nok" (i.e., SPGS-550-M; β-sitosterol methoxypolyethyleneglycol succinate), soon to be commercially available from Aldrich, can be prepared in two steps using an abundant plant feedstock and β-sitosterol, together with succinic anhydride and PEG-550-M. Upon dissolution in water, it forms nanomicelles that serve as nanoreactors, which can be c...

The combination of polymeric surfactants with different features into mixed micelles give access to properties that may be superior the single-component micelles. In this work, we investigated synergistic effects in mixtures D-α-Tocopheryl polyethylene glycol succinate (TPGS) poloxamines (also known as Tetronic), pH-responsive and thermogelling oxide (PEO)-polypropylene (PPO) 4-arm block copoly...

BACKGROUND Nanoparticles fabricated from the biodegradable and biocompatible polymer, polylactic-co-glycolic acid (PLGA), are the most intensively investigated polymers for drug delivery systems. The objective of this study was to explore fully the development of a PLGA nanoparticle drug delivery system for alternative preparation of a commercial formulation. In our nanoparticle fabrication, ou...

BACKGROUND Insulin is the drug therapy for patients with insulin-dependent diabetes mellitus. A number of attempts have been made in the past to overcome the problems associated with the oral delivery of insulin, but with little success. Orally administered insulin has encountered with many difficulties such as rapid degradation and poor intestinal absorption. The potential use of D-α-tocophero...

Solid dispersions (SDs) of ursolic acid (UA) were developed using polyvinylpyrrolidone K30 (PVP K30) in combination with non-ionic surfactants, such as D-α-tocopherol polyethylene glycol 1000 succinate (TPGS) or poloxamer 407 (P407) the aim enhancing solubility and vitro release UA. SDs investigated a 24 full factorial design, subsequently selected formulations characterized for water solubilit...

PurposeTo study the effects of density folic acid (FA) on hypoglycemic ability FA-targeted polymersomes as oral insulin carriers. Also to change effect mixed added with various mass ratio d-α-tocopherol polyethylene glycol 1000 succinate (TPGS).MethodsThe different FA molar contents were prepared. The in vitro release experiments media for studied. Their quantitative cellular uptake Caco-2 cell...

Using a reaction medium containing nanoparticles consisting of commercially available TPGS-750-M in water, a combination of Langlois' reagent and t-BuOOH can be used to effect trifluoromethylation of several heterocyclic arrays, including heteroaromatics. These reactions take place at ambient temperatures, and the aqueous medium can be recycled.