Nanoparticles for protein drug delivery

Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Carbohydrate doai

Reexamination Certificate

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Reexamination Certificate

active

07897585

ABSTRACT:
The invention discloses the nanoparticles composed of chitosan, poly-glutamic acid, and at least one anti-hemophilic factor or bioactive agent characterized with a positive surface charge and their enhanced permeability in oral drug delivery.

REFERENCES:
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patent: 6649192 (2003-11-01), Alonso Fernandez et al.
patent: 6726934 (2004-04-01), Prokop
patent: 2006/0051423 (2006-03-01), Heppe et al.
Lin YH et al. “Preparation and characterization of nanoparticles shelled with chitosan for oral insulin delivery” Biomacromolecules 2007;8:146-152.
Lin YH et al. “Novel nanoparticles for oral insulin delivery via the paracellular pathway” Nanotechnology 2007;18:1-11.
van der Lubben IM et al. “Chitosan and its derivatives in mucosal drug and vaccine delivery” Euro J Pharma Sci 2001;14:201-207.
Hosny EA et al. “Oral delivery of insulin from enteric-coated capsules containing sodium salicylate” Int J Pharmaceutics 2002;237:71-76.
Lin YH et al. “Preparation of nanoparticles composed of chitosan/poly-gamma-glutaraldehyde and evaluation of their permeability through Caco-2 cells” Biomacromolecules 2005;6:1104-1112.
Mi FL et al. “Oral delivery of peptide drugs using nanoparticles self-assembled by poly(r-glutamic acid) and a chitosan derivative functionalized by trimethylation” Bioconjugate Chem 2008;19:1248-1255.

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