Patents Assigned to VIRxSYS Corporation
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Patent number: 8883753Abstract: Methods and compositions for generating novel nucleic acid molecules through targeted spliceosome mediated RNA trans-splicing that result in expression of a apoAI protein, an apoAI variant, the preferred embodiment referred to herein as the apoAI Milano variant, a pre-pro-apoAI or an analog of apoAI. The methods and compositions include pre-trans-splicing molecules (PTMs) designed to interact with a target precursor messenger RNA molecule (target pre-mRNA) and mediate a trans-splicing reaction resulting in the generation of a novel chimeric RNA molecule (chimeric RNA) capable of encoding apoAI, the apoAI Milano variant, or an analog of apoAI. The expression of this apoAI protein results in protection against vascular disorders resulting from plaque build up, i.e., atherosclerosis, strokes and heart attacks.Type: GrantFiled: June 22, 2011Date of Patent: November 11, 2014Assignee: Virxsys CorporationInventors: Madaiah Puttaraju, Edward Otto, Mariano A. Garcia-Blanco, Gerard J. McGarrity, Gary F. Temple
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Publication number: 20120046347Abstract: Methods and compositions for generating novel nucleic acid molecules through targeted spliceosome mediated RNA trans-splicing that result in expression of a apoAI protein, an apoAI variant, the preferred embodiment referred to herein as the apoAI Milano variant, a pre-pro-apoAI or an analogue of apoAI. The methods and compositions include pre-trans-splicing molecules (PTMs) designed to interact with a target precursor messenger RNA molecule (target pre-mRNA) and mediate a trans-splicing reaction resulting in the generation of a novel chimeric RNA molecule (chimeric RNA) capable of encoding apoAI, the apoAI Milano variant, or an analogue of apoAI. The expression of this apoAI protein results in protection against vascular disorders resulting from plaque build up, i.e., atherosclerosis, strokes and heart attacks.Type: ApplicationFiled: June 22, 2011Publication date: February 23, 2012Applicant: Virxsys CorporationInventors: Madaiah Pattaraju, Edward Otto, Mariano A. Garcia-Blanco, Gerard J. McGarrity, Gary F. Temple
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Patent number: 8053232Abstract: The present invention provides methods and compositions for generating novel nucleic acid molecules through targeted spliceosomal mediated RNA trans-splicing. The compositions of the invention include pre-trans-splicing molecules (PTMs) designed to interact with a SERPINA1 target precursor messenger RNA molecule (target pre-mRNA) and mediate a trans-splicing reaction resulting in the generation of a novel chimeric RNA molecule (chimeric RNA). In particular, the PTMs of the present invention include those genetically engineered to interact with SERPINA1 target pre-mRNA so as to result in correction of SERPINA1 genetic defects responsible for AAT deficiency. The PTMs of the invention may also comprise sequences that are processed out of the PTM to yield duplex siRNA molecules directed specifically to mutant SERPIN A1 mRNAs. Such duplexed siRNAs are designed to reduce the accumulation of toxic AAT protein in liver cells.Type: GrantFiled: January 21, 2005Date of Patent: November 8, 2011Assignee: VIRxSYS CorporationInventors: Madaiah Puttaraju, Edward Otto, Mariano A. Garcia-Blanco, Gerard J. McGarrity, Gary F. Temple, Lloyd G. Mitchell, Colette Cote, S. Gary Mansfield
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Publication number: 20110263015Abstract: The present invention describes the use of pre-trans-splicing molecules (PTMs) to reprogram human normal and diseased somatic cells into pluripotent stem cells using spliceosome-mediated RNA trans-splicing. More specifically, the present invention describes the use of the SMaRTâ„¢ technology to repair or reprogram the newly induced diseased pluripotent stem cells.Type: ApplicationFiled: August 20, 2009Publication date: October 27, 2011Applicant: VIRXSYS CORPORATIONInventors: Jenice G. D'Costa, Laurent M. Humeau, Stephen Gary Mansfield, Madaiah Puttaraju, Nikolay Korokhov, Gerard J. McGarrity
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Patent number: 8043611Abstract: The present invention provides nucleic acid constructs, expression systems, and methods relating to the regulation of gene expression. The invention may be applied to regulate the expression of any coding sequence of interest, including those coding for viral components necessary for the packaging of viral particles.Type: GrantFiled: December 13, 2004Date of Patent: October 25, 2011Assignee: Virxsys CorporationInventors: Yung-Nien Chang, Yajin Ni, Boro Dropulic
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Publication number: 20110244519Abstract: The present invention provides methods and compositions for generating novel nucleic acid molecules through RNA trans-splicing that target a highly expressed pre-mRNA and contain the coding sequence for antibody polypeptide(s). The compositions of the invention include pre-trans-splicing molecules (PTMs) designed to interact with the target precursor messenger RNA molecule (target pre-mRNA) that is abundantly expressed or tumor specific and mediate a trans-splicing reaction resulting in the generation of novel chimeric RNA molecule (chimeric RNA) capable of encoding an antibody polypeptide. The invention provides for the in vivo production of chimeric RNA molecules that encode and result in the production of an antibody polypeptide that is therapeutically effective against, for example, infectious agents, cancer cells, transplantation antigens, rheumatoid arthritis, etc.Type: ApplicationFiled: January 11, 2011Publication date: October 6, 2011Applicant: VIRxSYS CorporationInventors: Gerard J. McGarrity, Mariano A. Garcia-Blanco, Madaiah Puttaraju
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Publication number: 20110207226Abstract: The present invention provides for a hybrid vector system for the purpose of therapeutic gene delivery where the system is used for a targeted integration of a therapeutic gene into a genome. The hybrid vector system comprises a hybrid vector made up of a non-integrating lentiviral vector and an adeno-associated vector, and a therapeutic gene.Type: ApplicationFiled: August 20, 2009Publication date: August 25, 2011Applicant: Virxsys CorporationInventors: Yajin NI, Jenice G. D' Costa, Ramdall K. Merling
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Patent number: 7968334Abstract: Methods and compositions for generating novel nucleic acid molecules through targeted spliceosome mediated RNA trans-splicing that result in expression of a apoAI protein, an apoAI variant, the preferred embodiment referred to herein as the apoAI Milano variant, a pre-pro-apoAI or an analogue of apoAI. The methods and compositions include pre-trans-splicing molecules (PTMs) designed to interact with a target precursor messenger RNA molecule (target pre-mRNA) and mediate a trans-splicing reaction resulting in the generation of a novel chimeric RNA molecule (chimeric RNA) capable of encoding apoAI, the apoAI Milano variant, or an analogue of apoAI. The expression of this apoAI protein results in protection against vascular disorders resulting from plaque build up, i.e., atherosclerosis, strokes and heart attacks.Type: GrantFiled: May 31, 2005Date of Patent: June 28, 2011Assignee: VIRxSYS CorporationInventors: Madaiah Puttaraju, Edward Otto, Mariano A. Garcia-Blanco, Gerard J. McGarrity, Gary F. Temple
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Patent number: 7879321Abstract: The present invention provides methods and compositions for generating novel nucleic acid molecules through RNA trans-splicing that target a highly expressed pre-mRNA and contain the coding sequence for antibody polypeptide(s). The compositions of the invention include pre-trans-splicing molecules (PTMs) designed to interact with the target precursor messenger RNA molecule (target pre-mRNA) that is abundantly expressed or tumor specific and mediate a trans-splicing reaction resulting in the generation of novel chimeric RNA molecule (chimeric RNA) capable of encoding an antibody polypeptide. The invention provides for the in vivo production of chimeric RNA molecules that encode and result in the production of an antibody polypeptide that is therapeutically effective against, for example, infectious agents, cancer cells, transplantation antigens, rheumatoid arthritis, etc.Type: GrantFiled: October 7, 2005Date of Patent: February 1, 2011Assignee: VIRxSYS CorporationInventors: Gerard J. McGarrity, Mariano A. Garcia-Blanco, Madaiah Puttaraju
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Patent number: 7871795Abstract: The present invention provides methods and compositions for generating novel nucleic acid molecules through RNA trans-splicing that target a highly expressed pre-mRNA and contain the coding sequence of a protein or polypeptide of interest. The compositions of the invention include pre-trans-splicing molecules (PTMs) designed to interact with the target precursor messenger RNA molecule (target pre-mRNA) that is abundantly expressed, and mediate a trans-splicing reaction resulting in the generation of novel chimeric RNA molecule (chimeric RNA) capable of encoding a protein or polypeptide of interest. The invention provides for the in vivo production of chimeric RNA molecules that encode and result in the production of a protein or polypeptide of interest.Type: GrantFiled: October 7, 2005Date of Patent: January 18, 2011Assignee: VIRxSYS CorporationInventors: Gerard J. McGarrity, Mariano A. Garcia-Blanco
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Publication number: 20090203143Abstract: The present invention provides methods and compositions for conferring selective death on cells expressing a specific target precursor messenger RNA (selective target pre-mRNA). The compositions of the invention include pre-trans-splicing molecules (PTMs) designed to interact with a target precursor messenger RNA molecule (target pre-mRNA) expressed within a cell and mediate a trans-splicing reaction resulting in the generation of a novel chimeric mRNA molecule (chimeric mRNA) capable of encoding a light producing protein or enzyme. Cell death is further mediated by the presence of a photosensitizer which upon photoactivation produces cytotoxicity.Type: ApplicationFiled: June 9, 2008Publication date: August 13, 2009Applicant: VIRXSYS CORPORATIONInventors: Lloyd G. Mitchell, Edward Otto, Carl R. Merril
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Publication number: 20090081682Abstract: The present invention relates to methods and compositions for the efficient identification of one or more functionalities of a product encoded by a nucleic acid sequence of interest. The methods utilize the abilities to over and/or under express the product in a cell, as well as the combination of these results, to permit the identification of at least one of the product's cellular or in vivo functionality.Type: ApplicationFiled: September 19, 2008Publication date: March 26, 2009Applicant: VIRXSYS CORPORATIONInventor: Boro DROPULIC
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Publication number: 20080274091Abstract: The invention provides novel processes for manufacturing autologous T cells, transducing T cells and expanding the transduced T cell population.Type: ApplicationFiled: May 22, 2006Publication date: November 6, 2008Applicant: VIRxSYS CorporationInventors: Vladimir Slepushkin, Laurent Humeau
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Patent number: 7427474Abstract: The present invention relates to methods and compositions for the efficient identification of one or more functionalities of a product encoded by a nucleic acid sequence of interest. The methods utilize the abilities to over and/or under express the product in a cell, as well as the combination of these results, to permit the identification of at least one of the product's cellular or in vivo functionality.Type: GrantFiled: July 25, 2003Date of Patent: September 23, 2008Assignee: VIRxSYS CorporationInventor: Boro Dropulic
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Patent number: 7399753Abstract: The present invention provides methods and compositions for conferring selective death on cells expressing a specific target precursor messenger RNA (selective target pre-mRNA). The compositions of the invention include pre-trans-splicing molecules (PTMs) designed to interact with a target precursor messenger RNA molecule (target pre-mRNA) expressed within a cell and mediate a trans-splicing reaction resulting in the generation of a novel chimeric mRNA molecule (chimeric mRNA) capable of encoding a light producing protein or enzyme. Cell death is further mediated by the presence of a photosensitizer which upon photoactivation produces cytotoxicity.Type: GrantFiled: September 9, 2003Date of Patent: July 15, 2008Assignee: Virxsys CorporationInventors: Lloyd G. Mitchell, Edward Otto, Carl R. Merril
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Publication number: 20070036783Abstract: This invention is directed to a soluble complex of ligands that binds to surface molecules of hemopoietic cells and result in their activation or expansion. The complex may be used in the activation and/or expansion of hemopoietic cells, optionally in combination with their transduction. The complex of ligands bind at least two cell surface molecules, such as one that plays a role in cell-cell adhesion and one that may or may not activate or stimulate the cell to promote growth and/or proliferation after binding to a ligand. A complex of ligands that bind two hemopoietic cell stimulatory molecules is also provided. The invention further provides for the use of the complex to target vectors to hemopoietic cells.Type: ApplicationFiled: June 16, 2006Publication date: February 15, 2007Applicant: VIRxSYS, CorporationInventors: Laurent Humeau, Brian Paszkiet, Franck Lemiale
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Publication number: 20060281128Abstract: The present invention relates to multiple novel approaches for the generation of an immune response in an animal, such as a human, using lentivirus-based vector technology. The invention provides for the ability to mimic the efficacy of a live attenuated (LA) vaccine, without exposing the patient to the risk of disease as possible with some LA vaccines. The invention thus provides for systems of complementary conditionally replicating vectors, vectors that produce replication deficient virus like particles, and multi-antigen constructs that target a virus or microbial pathogen. The use of these materials in the practice of the invention permits the generation of robust cellular and humoral responses to the antigens presented thereby.Type: ApplicationFiled: August 17, 2006Publication date: December 14, 2006Applicant: VIRXSYS CORPORATIONInventors: Xiaobin Lu, Boro Dropulic
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Publication number: 20060003452Abstract: The invention relates to a method of increasing vector transduction in target cells. The invention provides for the recombinant engineering of a packaging cell line to be capable of expressing one or more membrane proteins which facilitate binding to, and activation of, a target cell. The invention also provides for recombinant engineering of a cell that endogenously expresses one or more such membrane proteins into a packaging cell line. A vector packaged into viral particles via use of such cell lines would comprise an outer envelope containing these proteins. The particles would be specifically suited for binding and targeting to a target cell to facilitate transduction thereof with the vector. The target cell may also be simultaneously activated (stimulated) by the packaged vector in the absence of exogenously supplied stimulatory molecules.Type: ApplicationFiled: June 30, 2005Publication date: January 5, 2006Applicant: VIRxSYS CorporationInventors: Laurent Humeau, Vladimir Slepushkin, Brian Paszkiet, Yajin Ni
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Patent number: 6835568Abstract: The present invention provides nucleic acid constructs, expression systems, and methods relating to the regulation of gene expression. The invention may be applied to regulate the expression of any coding sequence of interest, including those coding for viral components necessary for the packaging of viral particles.Type: GrantFiled: October 30, 2001Date of Patent: December 28, 2004Assignee: Virxsys CorporationInventors: Yung-Nien Chang, Yajin Ni, Boro Dropulic
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Patent number: 6627442Abstract: The present invention provides methods, as well as compositions related thereto, for the efficient transduction of cells using viral vectors. The efficiency of transduction is increased by contacting the cell to be transduced with one or more molecules that bind the cell surface. Contact with a cell surface binding molecule may occur before, after, or simultaneously with contact between the viral vector and the cell. The transduced vectors may be constructed to express a gene of interest, permitting the transduced cells to be used as therapeutic and prophylactic agents.Type: GrantFiled: August 31, 2000Date of Patent: September 30, 2003Assignee: VIRxSYS CorporationInventors: Laurent Humeau, Wei Han, Xiaobin Lu, Vladimir Slepushkin, Mechelle Lesher, Brian Davis, Yung-Nien Chang, Boro Dropulic