Abstract: The invention provides compositions for oral delivery and methods of treatment using VSP carriers, such as Giardia sp. variable surface proteins (VSP), to deliver therapeutic agents. VSP drug carriers can be combined with bioactive peptides, e.g., insulin, glucagon, or hGH, and be administered orally or mucosally. VSP carriers are resistant to acidic pHs and to proteolytic degradation and protect therapeutic agents from degradation in the gastrointestinal tract.
Type:
Grant
Filed:
July 5, 2013
Date of Patent:
September 12, 2017
Assignees:
UNIVERSIDAD CATOLICA DE CORDOBA, ASSISTANCE PUBLIQUE HOPITAUX DE PARIS, CONSEJO NACIONAL DE INVESTIGACIONES CIENTIFICAS Y TECHNICAS (CONICET), UNIVERSITE PIERRE ET MARIE CURIE (PARIS 6)
Inventors:
David Klatzmann, Eliane Piaggio, Hugo Lujan
Abstract: Modified protozoa parasites comprising simultaneous expression on its surface of at least two variable surface proteins (VSP). The modified protozoa may also simultaneously express the complete repertoire of variable surface proteins. Protozoa show reduced expression of Dicer, RNA-dependant RNA-polymerase (RdRP) enzymes or both, wherein the RdRP gene and/or the Dicer gene has been silenced. The protozoan may be any protozoan showing an antigenic variation mechanism.
Abstract: The invention provides compositions for oral delivery and methods of treatment using VSP carriers, such as Giardia sp. variable surface proteins (VSP), to deliver therapeutic agents. VSP drug carriers can be combined with bioactive peptides, e.g., insulin, glucagon, or hGH, and be administered orally or mucosally. VSP carriers are resistant to acidic pHs and to proteolytic degradation and protect therapeutic agents from degradation in the gastrointestinal tract.
Type:
Grant
Filed:
March 15, 2013
Date of Patent:
October 4, 2016
Assignees:
CONSEJO NACIONAL DE INVESTIGACIONES CIENTIFICAS Y TECNICAS (CONCET), UNIVERSIDAD CATOLICA DE CORDOBA, ASSISTANCE PUBUQUE HOPITAUX DE PARIS, UNIVERSITE PIERRE ET MARIE CURIE (PARIS 8)
Inventors:
David Klatzmann, Eliane Piaggio, Hugo Lujan
Abstract: The invention relates to pharmaceutical compositions using a polypeptide comprising at least one CXXC motif, such as Giardia parasite's variable surface proteins (VSP) or a fragment thereof to raise by oral or mucosal vaccination an immune response against a heterologous selected antigen, such as tumor antigen, microbial antigen or other antigen.
Type:
Application
Filed:
March 29, 2011
Publication date:
April 18, 2013
Applicants:
INSERM (Institut National de la Sante et de la Recherche Medicale), Centre National de la Recherche Scientifique - CNRS, Universidad Catolica de Cordoba (UCC), Assistance Publique Hopitaux de Paris, Consejo Nacional de Investigaciones Cientificas y Tecnicas (CONICET), Universite Pierre et Marie Curie (Paris 6)
Inventors:
David Klatzmann, Eliane Piaggio, Hugo Daniel Luján