Nanofibre-based mucoadhesive films were invented for oromucosal administration of nanocarriers used for delivery of drugs and vaccines. The mucoadhesive film consists of an electrospun nanofibrous reservoir layer, a mucoadhesive film layer and a protective backing layer. The mucoadhesive layer is responsible for tight adhesion of the whole system to the oral mucosa after application. The electrospun nanofibrous reservoir layer is intended to act as a reservoir for polymeric and lipid-based nanoparticles, liposomes, virosomes, virus-like particles, dendrimers and the like, plus macromolecular drugs, antigens and/or allergens. The extremely large surface area of nanofibrous reservoir layers allows high levels of nanoparticle loading. Nanoparticles can either be reversibly adsorbed to the surface of nanofibres or they can be deposited in the pores between the nanofibres. After mucosal application, nanofibrous reservoir layers are intended to promote prolonged release of nanoparticles into the submucosal tissue. Reversible adsorption of model nanoparticles as well as sufficient mucoadhesive properties were demonstrated. This novel system appears appropriate for the use in oral mucosa, especially for sublingual and buccal tissues. To prove this concept, trans-/intramucosal and lymph-node delivery of PLGA-PEG nanoparticles was demonstrated in a porcine model. This system can mainly be used for sublingual immunization and the development of "printed vaccine technology".
- MeSH
- adheziva chemie MeSH
- aplikace bukální MeSH
- aplikace sublinguální MeSH
- léčivé přípravky aplikace a dávkování MeSH
- liposomy chemie MeSH
- lymfatické uzliny metabolismus MeSH
- myši MeSH
- nanočástice chemie MeSH
- nanovlákna chemie MeSH
- polyethylenglykoly chemie MeSH
- polyglactin 910 chemie MeSH
- prasata MeSH
- systémy cílené aplikace léků metody MeSH
- ústní sliznice metabolismus MeSH
- vakcinace metody MeSH
- vakcíny aplikace a dávkování MeSH
- zvířata MeSH
- Check Tag
- myši MeSH
- zvířata MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
Pro-apoptotic analogues of vitamin E (VE) exert selective anti-cancer effect on various animal cancer models. Neither suitable formulation of α-tocopheryl succinate (α-TOS), representative semi-synthetic VE analogue ester, nor suitable formulations of the other VE analogues for clinical application have been reported yet. The major factor limiting the use of VE analogues is their low solubility in aqueous solvents. Due to the hydrophobic character of VE analogues, liposomes are predetermined as suitable delivery system. Liposomal formulation prevents undesirable side effects of the drug, enhances the drug biocompatibility, and improves the drug therapeutic index. Liposomal formulations of VE analogues especially of α-TOS and α-tocopheryl ether linked acetic acid (α-TEA) have been developed. The anti-cancer effect of these liposomal VE analogues has been successfully demonstrated in pre-clinical models in vivo. Present achievements in: (i) preparation of liposomal formulations of VE analogues, (ii) physico-chemical characterization of these developed systems and (iii) testing of their biological activity such as induction of apoptosis and evaluation of anti-cancer effect are discussed in this review.
- MeSH
- alfa-tokoferol aplikace a dávkování MeSH
- antitumorózní látky aplikace a dávkování chemie MeSH
- apoptóza účinky léků MeSH
- chemie farmaceutická MeSH
- lidé MeSH
- lipidy chemie MeSH
- liposomy MeSH
- nádory farmakoterapie patologie MeSH
- rozpustnost MeSH
- systémy cílené aplikace léků metody MeSH
- vitamin E aplikace a dávkování analogy a deriváty chemie MeSH
- zvířata MeSH
- Check Tag
- lidé MeSH
- zvířata MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
- přehledy MeSH
- Publikační typ
- abstrakt z konference MeSH
