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Louis-Philippe Vezina

Louis-Philippe Vezina, Quebec CA

Patent application numberDescriptionPublished
20110104753Soluble Recombinant Influenza Antigens - The present invention provides a recombinant soluble trimeric hemagglutinin (rHA) protein comprising a hemagglutinin ectodomain and an oligomerization domain. The rHA is produced as a soluble homotrimer, and may further comprises a signal peptide and/or an endoplasmic reticulum (ER) retention signal. The invention is also directed to nucleic acids encoding the rHA of the invention, as well as vectors and chimeric constructs comprising the nucleic acid. Methods of producing the rHA are also provided. The rHA described herein may be used to formulate influenza vaccines, or may be used to enrich existing vaccines.05-05-2011

Patent applications by Louis-Philippe Vezina, Quebec CA

Louis-Philippe Vezina, Neuville CA

Patent application numberDescriptionPublished
20090312240Synthesis of Sialic Acid in Plants - A method of synthesizing sialic acid in plants, and plants capable of synthesizing sialic acid is provided. Furthermore, a method of producing sialylated a protein in a plant is also provided. The method to synthesize sialic acid comprises providing a plant comprising a nucleotide sequence encoding N-acetyl neuraminic acid (Neu5Ac) synthase or Neu5Ac lyase, and expressing the nucleotide sequence thereby synthesizing sialic acid. The plant may also co-express a nucleotide sequence encoding one or more than one of an epimerase, a CMP-Neu5 Ac synthase, CMP-Neu5Ac transporter and a sialyltransferase.12-17-2009
20090318377MEDICAGENIC ACID SAPONIN AND USES THEREOF - A cholesterol-lowering preparation comprising medicagenic acid saponin is disclosed. The amount of medicagenic acid saponin in the preparation is greater than 50% by weight to produce the cholesterol-lowering effect in an animal. A method of purifying a preparation of at least 30% medicagenic acid saponin is also disclosed. The preparation may be purified from alfalfa plants and used as a treatment for lowering cholesterol and triglycerides in an animal, in particular a human.12-24-2009
20100239610INFLUENZA VIRUS-LIKE PARTICLES (VLPS) COMPRISING HEMAGGLUTININ PRODUCED WITHIN A PLANT - A method for synthesizing influenza virus-like particles (VLPs) within a plant or a portion of a plant is provided. The method involves expression of influenza HA in plants and the purification by size exclusion chromatography. The invention is also directed towards a VLP comprising influenza HA protein and plants lipids. The invention is also directed to a nucleic acid encoding influenza HA as well as vectors. The VLPs may be used to formulate influenza vaccines, or may be used to enrich existing vaccines.09-23-2010
20100251417PROTEIN PRODUCTION IN PLANTS - A method for synthesizing a protein of interest within a plant or a portion of a plant is provided. The method involves introducing one or more than one nucleic acid sequence encoding a protein of interest operatively linked with a regulatory region obtained from a photosynthetic gene that is active in the plant, in a transient manner. The plant is then maintained under conditions that permit the nucleic acid sequence encoding the protein of interest to be expressed in the plant or the portion of the plant. The plant may be pruned prior to the introducing one or more than one nucleic acid sequence.09-30-2010
20100310604RECOMBINANT INFLUENZA VIRUS-LIKE PARTICLES (VLPS) PRODUCED IN TRANSGENIC PLANTS EXPRESSING HEMAGGLUTININ - A method for synthesizing influenza virus-like particles (VLPs) within a plant or a portion of a plant is provided. The method involves expression of influenza HA in plants and the purification by size exclusion chromatography. The invention is also directed towards a VLP comprising influenza HA protein and plants lipids. The invention is also directed to a nucleic acid encoding influenza HA as well as vectors. The VLPs may be used to formulate influenza vaccines, or may be used to enrich existing vaccines.12-09-2010
20110008837MODIFYING GLYCOPROTEIN PRODUCTION IN PLANS - A method for synthesizing a protein of interest with a modified N-glycosylation profile within a plant, a portion of a plant, or a plant cell is provided. The method comprises co-expressing within a plant a nucleotide sequence encoding a first nucleotide sequence encoding a hybrid protein (GNT1-GalT) comprising a CTS domain of N-acetylglucosaminyl transferase (GNT1) fused to a catalytic domain of beta-1,4galactosyltransferase (GalT), the first nucleotide sequence operatively linked with a first regulatory region that is active in the plant, and a second nucleotide sequence for encoding the protein of interest, the second nucleotide sequence operatively linked with a second regulatory region that is active in the plant. The first and second nucleotide sequences are co-expressed to synthesize a protein of interest comprising glycans with the modified N-glycosylation profile within the plant, the portion of the plant, or the plant cell.01-13-2011
20110191915INFLUENZA VIRUS IMMUNIZING EPITOPE - A method for synthesizing influenza virus-like particles (VLPs) within a plant or a portion of a plant is provided. The method involves expression of a novel influenza HA protein in plants and its purification The invention is also directed towards a VLP comprising influenza HA protein and plants lipids. The invention is also directed to a nucleic acid encoding improved influenza HA as well as vectors. The VLPs may be used to formulate influenza vaccines, or may be used to enrich existing vaccines.08-04-2011
20110293650INFLUENZA VIRUS-LIKE PARTICLES (VLPS) COMPRISING HEMAGGLUTININ - A method for synthesizing influenza virus-like particles (VLPs) within a plant or a portion of a plant is provided. The method involves expression of influenza HA of type A/California/04/09 in plants and the purification by size exclusion chromatography. The invention is also directed towards a VLP comprising influenza HA protein of type A/California/04/09 and plants lipids. The invention is also directed to a nucleic acid encoding influenza HA of type A/California/04/09 as well as vectors. The VLPs may be used to formulate influenza vaccines, or may be used to enrich existing vaccines.12-01-2011

Patent applications by Louis-Philippe Vezina, Neuville CA

Louis-Philippe Vezina, Sainte Foy CA

Patent application numberDescriptionPublished
20110312095METHOD AND CONSTRUCTS FOR INCREASING RECOMBINANT PROTEIN PRODUCTION IN PLANTS DEHYDRATION STRESS - The present invention provides methods and constructs for increasing recombinant protein production in plants during dehydration stress. The invention includes nucleic acids, inducible expression systems, and methods for using same for increasing recombinant protein production in plants and plant protection.12-22-2011