Patents by Inventor Gulilat Gebeyehu
Gulilat Gebeyehu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 8058068Abstract: The present invention provides compositions useful for transfecting eukaryotic cells comprising nucleic acid complexes with peptides, wherein the peptide is optionally covalently coupled to a nucleic acid-binding group, and cationic lipids or dendrimers as transfection agents. The invention also provides transfection compositions in which a peptide is covalently linked to the transfection agent (lipid, cationic lipid or dendrimer). Inclusion of peptides or modified-peptides in transfection compositions or covalent attachment of peptides to transfection agents results in enhanced transfection efficiency. Methods for the preparation of transfection compositions and methods of using these transfection compositions as intracellular delivery agents and extracellular targeting agents are also disclosed.Type: GrantFiled: July 23, 2002Date of Patent: November 15, 2011Assignee: Life Technologies CorporationInventors: Pamela Hawley-Nelson, Jianqing Lan, PoJen Shih, Joel A. Jessee, Kevin P. Schifferli, Gulilat Gebeyehu, Valentina C. Ciccarone, Krista L. Evans
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Patent number: 8034977Abstract: Cationic lipid compositions are provided that are useful for efficient delivery of macromolecules, such as nucleic acids, into a wide variety of eukaryotic cell types. Methods for using the compositions also are provided.Type: GrantFiled: April 27, 2009Date of Patent: October 11, 2011Assignee: Molecular Transfer, Inc.Inventors: Gulilat Gebeyehu, Taysir M. Jaouni, Joel Jessee
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Patent number: 7915450Abstract: Disclosed are cationic lipid compounds and compositions of lipid aggregates for delivery of macromolecules and other compounds into cells. The compounds can be used alone or in combination with other compounds lo prepare liposomes and other lipid aggregates suitable for iransfcclion or delivery of compounds to target cells, cither in vitro or in vivo. The compounds are preferably polycationic and preferably form highly stable complexes with various anionic macromolecules. particularly polyanions such as nucleic acids. These compounds have the properly, when dispersed in water, of forming lipid aggregates which associate strongly, via their cationic portion, with polyanions. Also disclosed are intermediates for preparing the compound and compositions of the invention and methods of using the compounds to introduce other compounds into cells.Type: GrantFiled: December 15, 2009Date of Patent: March 29, 2011Assignee: Life Technologies CorporationInventors: Yongliang Chu, Malek Masoud, Gulilat Gebeyehu
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Patent number: 7915230Abstract: Compositions and methods for improved delivery of macromolecules into eukaryotic cells are provided. Fusogenic peptides from fusion proteins of non-enveloped viruses enhance the efficiency of transfection of eukaryotic cells mediated by transfection agents such as cationic lipids, polycationic polymers such as PEI and dendrimers. These fusogenic peptides are used as part of a transfection complex that efficiently delivers a macromolecule, for example, a nucleic acid, into a eukaryotic cell. Novel cationic lipids and compositions of cationic lipids also are provided that may be used for the introduction of macromolecules such as nucleic acids, proteins and peptides into a variety of cells and tissues. The lipids can be used alone, in combination with other lipids and/or in combination with fusogenic peptides to prepare transfection complexes.Type: GrantFiled: May 17, 2006Date of Patent: March 29, 2011Assignee: Molecular Transfer, Inc.Inventors: Joel Jessee, Gulilat Gebeyehu
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Publication number: 20100233699Abstract: The present invention provides novel primers and methods for the detection of specific nucleic acid sequences. The primers and methods of the invention are useful in a wide variety of molecular biology applications and are particularly useful in allele specific PCR.Type: ApplicationFiled: December 1, 2009Publication date: September 16, 2010Applicant: Life Technologies CorporationInventors: Irina Nazarenko, Ayoub Rashtchian, Joseph Solus, Richard M. Pires, Marlene Darfler, Gulilat Gebeyehu, Mekbib Astatke
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Publication number: 20100159593Abstract: Disclosed are compounds capable of facilitating transport of biologically active agents or substances into cells having the general structure: wherein Q is selected from the group consisting of N, O and S; L is any bivalent organic radical capable of linking each Q, such as C, CH, (CH2)l, or {(CH2)i-Y—(CH2)j}k, wherein Y is selected from the group consisting of CH2, an ether, a polyether, an amide, a polyamide, an ester, a sulfide, a urea, a thiourea, a guanidyl, a carbamoyl, a carbonate, a phosphate, a sulfate, a sulfoxide, an imine, a carbonyl, and a secondary amino group and wherein Y is optionally substituted by —X1-L?-X2—Z or —Z; R1-R6, independently of one another, are selected from the group consisting of H, —(CH2)p-D-Z, an alkyl, an alkenyl, an aryl, and an alkyl or alkyl ether optionally substituted by one or more of an alcohol, an aminoalcohol, an amine, an amide, an ether, a polyether, a polyamide, an ester, a mercaptan, an alkylthio, a urea, a thiourea, a guanidyl, or a carbamoyl group, andType: ApplicationFiled: December 15, 2009Publication date: June 24, 2010Applicant: LIFE TECHNOLOGIES CORPORATIONInventors: Yongliang CHU, Malek Masoud, Gulilat Gebeyehu
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Patent number: 7601872Abstract: Disclosed are compounds capable of facilitating transport of biologically active agents or substances into cells having the general structure: wherein Q is selected from the group consisting of N, O and S; L is any bivalent organic radical capable of linking each Q, such as C, CH, (CH2)l, or {(CH2)i-Y—(CH2)j}k, wherein Y is selected from the group consisting of CH2, an ether, a polyether, an amide, a polyamide, an ester, a sulfide, a urea, a thiourea, a guanidyl, a carbamoyl, a carbonate, a phosphate, a sulfate, a sulfoxide, an imine, a carbonyl, and a secondary amino group and wherein Y is optionally substituted by —X1-L?-X2-Z or -Z; R1-R6, independently of one another, are selected from the group consisting of H, —(CH2)p-D-Z, an alkyl, an alkenyl, an aryl, and an alkyl or alkyl ether optionally substituted by one or more of an alcohol, an aminoalcohol, an amine, an amide, an ether, a polyether, a polyamide, an ester, a mercaptan, an alkylthio, a urea, a thiourea, a guanidyl, or a carbamoyl group, and wType: GrantFiled: January 21, 2005Date of Patent: October 13, 2009Assignee: Life Technologies CorporationInventors: Yongliang Chu, Malek Masoud, Gulilat Gebeyehu
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Publication number: 20090215067Abstract: Cationic lipid compositions are provided that are useful for efficient delivery of macromolecules, such as nucleic acids, into a wide variety of eukaryotic cell types. Methods for using the compositions also are provided.Type: ApplicationFiled: April 27, 2009Publication date: August 27, 2009Applicant: MOLECULAR TRANSFER, INC.Inventors: Gulilat Gebeyehu, Taysir M. Jaouni, Joel Jessee
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Publication number: 20090143583Abstract: Disclosed are compounds capable of facilitating transport of biologically active agents or substances into cells having the general structure: wherein Q is selected from the group consisting of N, O and S; L is any bivalent organic radical capable of linking each Q, such as C, CH, (CH2)l, or {(CH2)i-Y—(CH2)j}k, wherein Y is selected from the group consisting of CH2, an ether, a polyether, an amide, a polyamide, an ester, a sulfide, a urea, a thiourea, a guanidyl, a carbamoyl, a carbonate, a phosphate, a sulfate, a sulfoxide, an imine, a carbonyl, and a secondary amino group and wherein Y is optionally substituted by —X1-L?-X2-Z or -Z; R1-R6, independently of one another, are selected from the group consisting of H, —(CH2)p-D-Z, an alkyl, an alkenyl, an aryl, and an alkyl or alkyl ether optionally substituted by one or more of an alcohol, an aminoalcohol, an amine, an amide, an ether, a polyether, a polyamide, an ester, a mercaptan, an alkylthio, a urea, a thiourea, a guanidyl, or a carbamoyl group, andType: ApplicationFiled: January 14, 2009Publication date: June 4, 2009Applicant: LIFE TECHNOLOGIES CORPORATIONInventors: Yongliang CHU, Malek MASOUD, Gulilat GEBEYEHU
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Patent number: 7531693Abstract: Cationic lipid compositions are provided that are useful for efficient delivery of macromolecules, such as nucleic acids, into a wide variety of eukaryotic cell types. Methods for using the compositions also are provided.Type: GrantFiled: May 24, 2004Date of Patent: May 12, 2009Assignee: Molecular Transfer, Inc.Inventors: Gulilat Gebeyehu, Taysir M. Jaouni, Joel Jessee
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Publication number: 20090092990Abstract: The present invention provides novel primers and methods for the detection of specific nucleic acid sequences. The primers and methods of the invention are useful in a wide variety of molecular biology applications and are particularly useful in allele specific PCR.Type: ApplicationFiled: October 14, 2008Publication date: April 9, 2009Applicant: INVITROGEN CORPORATIONInventors: Irina Nazarenko, Ayoub Rashtchian, Joseph Solus, Richard M. Pires, Marlene Darfler, Gulilat Gebeyehu, Mekbib Astatke
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Publication number: 20090023215Abstract: Compositions and methods for improved delivery of macromolecules into eukaryotic cells are provided. Fusogenic peptides from fusion proteins of non-enveloped viruses enhance the efficiency of transfection of eukaryotic cells mediated by transfection agents such as cationic lipids, polycationic polymers such as PEI and dendrimers. These fusogenic peptides are used as part of a transfection complex that efficiently delivers a macromolecule, for example, a nucleic acid, into a eukaryotic cell. Novel cationic lipids and compositions of cationic lipids also are provided that may be used for the introduction of macromolecules such as nucleic acids, proteins and peptides into a variety of cells and tissues. The lipids can be used alone, in combination with other lipids and/or in combination with fusogenic peptides to prepare transfection complexes.Type: ApplicationFiled: May 17, 2006Publication date: January 22, 2009Applicant: MOLECULAR TRANSFERInventors: Joel Jessee, Gulilat Gebeyehu
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Patent number: 7479573Abstract: Disclosed are compounds capable of facilitating transport of biologically active agents or substances into cells having the general structure: wherein Q is selected from the group consisting of N, O and S; L is any bivalent organic radical capable of linking each Q, such as C, CH, (CH2)l, or {(CH2)i—Y—(CH2)j}k, wherein Y is selected from the group consisting of CH2, an ether, a polyether, an amide, a polyamide, an ester, a sulfide, a urea, a thiourea, a guanidyl, a carbamoyl, a carbonate, a phosphate, a sulfate, a sulfoxide, an imine, a carbonyl, and a secondary amino group and wherein Y is optionally substituted by —X1—L?—X2—Z or —Z; R1—R6, independently of one another, are selected from the group consisting of H, —(CH2)p-D-Z, an alkyl, an alkenyl, an aryl, and an alkyl or alkyl ether optionally substituted by one or more of an alcohol, an aminoalcohol, an amine, an amide, an ether, a polyether, a polyamide, an ester, a mercaptan, an alkylthio, a urea, a thiourea, a guanidyl, or a carbamoyl group, and wType: GrantFiled: January 21, 2005Date of Patent: January 20, 2009Assignee: Invitrogen CorporationInventors: Yongliang Chu, Malek Masoud, Gulilat Gebeyehu
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Patent number: 7470817Abstract: Disclosed are compounds capable of facilitating transport of biologically active agents or substances into cells having the general structure: wherein Q is selected from the group consisting of N, O and S; L is any bivalent organic radical capable of linking each Q, such as C, CH, (CH2)I, or {(CH2)i-Y—(CH2)j}k, wherein Y is selected from the group consisting of CH2, an ether, a polyether, an amide, a polyamide, an ester, a sulfide, a urea, a thiourea, a guanidyl, a carbamoyl, a carbonate, a phosphate, a sulfate, a sulfoxide, an imine, a carbonyl, and a secondary amino group and wherein Y is optionally substituted by —X1-L?-X2-Z or -Z; R1-R6, independently of one another, are selected from the group consisting of H, —(CH2)p-D-Z, an alkyl, an alkenyl, an aryl, and an alkyl or alkyl ether optionally substituted by one or more of an alcohol, an aminoalcohol, an amine, an amide, an ether, a polyether, a polyamide, an ester, a mercaptan, an alkylthio, a urea, a thiourea, a guanidyl, or a carbamoyl group, and wType: GrantFiled: December 28, 2006Date of Patent: December 30, 2008Assignee: Invitrogen CorporationInventors: Yongliang Chu, Malek Masoud, Gulilat Gebeyehu
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Patent number: 7344863Abstract: The present invention is directed to compositions and methods for enhancing synthesis of nucleic acid molecules, particularly GC-rich nucleic acid molecules. Specifically, the invention provides compositions comprising one or more nitrogen-containing organic compounds having a formula selected from the group consisting of formula I and formula II (or salts or derivatives thereof), preferably 4-methylmorpholine N-oxide or betaine (carboxymethyltrimethylammonium), and further comprising one or more compounds selected from the group consisting of proline and an N-alkylimidazole compound, and more preferably proline, 1-methylimidazole or 4-methylimidazole. The invention further relates to methods for enhanced, high-fidelity synthesis of nucleic acid molecules, including via amplification (particularly PCR), reverse transcription, and sequencing methods.Type: GrantFiled: July 27, 2004Date of Patent: March 18, 2008Assignee: Invitrogen CorporationInventors: Wu-Bo Li, Joel A. Jessee, David Schuster, Jiulin Xia, Gulilat Gebeyehu
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Patent number: 7323594Abstract: Disclosed are compounds capable of facilitating transport of biologically active agents or substances into cells having the general structure: wherein Q is selected from the group consisting of N, O and S; L is any bivalent organic radical capable of linking each Q, such as C, CH, (CH2)l, or {(CH2)i-Y—(CH2)j}k, wherein Y is selected from the group consisting of CH2, an ether, a polyether, an amide, a polyamide, an ester, a sulfide, a urea, a thiourea, a guanidyl, a carbamoyl, a carbonate, a phosphate, a sulfate, a sulfoxide, an imine, a carbonyl, and a secondary amino group and wherein Y is optionally substituted by -X1-L?-X2-Z or -Z; R1-R6, independently of one another, are selected from the group consisting of H, —(CH2)p-D-Z, an alkyl, an alkenyl, an aryl, and an alkyl or alkyl ether optionally substituted by one or more of an alcohol, an aminoalcohol, an amine, an amide, an ether, a polyether, a polyamide, an ester, a mercaptan, an alkylthio, a urea, a thiourea, a guanidyl, or a carbamoyl group, andType: GrantFiled: December 28, 2006Date of Patent: January 29, 2008Assignee: Invitrogen CorporationInventors: Yongliang Chu, Malek Masoud, Gulilat Gebeyehu
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Publication number: 20070202600Abstract: Disclosed are compounds capable of facilitating transport of biologically active agents or substances into cells having the general structure: wherein Q is selected from the group consisting of N, O and S; L is any bivalent organic radical capable of linking each Q, such as C, CH, (CH2)I, or {(CH2)i—Y—(CH2)j}k, wherein Y is selected from the group consisting of CH2, an ether, a polyether, an amide, a polyamide, an ester, a sulfide, a urea, a thiourea, a guanidyl, a carbamoyl, a carbonate, a phosphate, a sulfate, a sulfoxide, an imine, a carbonyl, and a secondary amino group and wherein Y is optionally substituted by —X1—L?—X2—Z or —Z; R1-R6, independently of one another, are selected from the group consisting of H, —(CH2)p—D—Z, an alkyl, an alkenyl, an aryl, and an alkyl or alkyl ether optionally substituted by one or more of an alcohol, an aminoalcohol, an amine, an amide, an ether, a polyether, a polyamide, an ester, a mercaptan, an alkylthio, a urea, a thiourea, a guanidyl, or a carbamoyl group, and wType: ApplicationFiled: December 28, 2006Publication date: August 30, 2007Applicant: INVITROGEN CORPORATIONInventors: Yongliang Chu, Malek Masoud, Gulilat Gebeyehu
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Publication number: 20070202598Abstract: Disclosed are compounds capable of facilitating transport of biologically active agents or substances into cells having the general structure: wherein Q is selected from the group consisting of N, O and S; L is any bivalent organic radical capable of linking each Q, such as C, CH, (CH2)l, or {(CH2)i-Y—(CH2)j}k, wherein Y is selected from the group consisting of CH2, an ether, a polyether, an amide, a polyamide, an ester, a sulfide, a urea, a thiourea, a guanidyl, a carbamoyl, a carbonate, a phosphate, a sulfate, a sulfoxide, an imine, a carbonyl, and a secondary amino group and wherein Y is optionally substituted by -X1-L ?-X2-Z or -Z; R1-R6, independently of one another, are selected from the group consisting of H, —(CH2)p-D-Z, an alkyl, an alkenyl, an aryl, and an alkyl or alkyl ether optionally substituted by one or more of an alcohol, an aminoalcohol, an amine, an amide, an ether, a polyether, a polyamide, an ester, a mercaptan, an alkylthio, a urea, a thiourea, a guanidyl, or a carbamoyl group, anType: ApplicationFiled: December 28, 2006Publication date: August 30, 2007Applicant: INVITROGEN CORPORATIONInventors: Yongliang Chu, Malek Masoud, Gulilat Gebeyehu
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Patent number: 7173154Abstract: Disclosed are compounds capable of facilitating transport of biologically active agents or substances into cells having the general structure: wherein Q is selected from the group consisting of N, O and S; L is any bivalent organic radical capable of linking each Q, such as C, CH, (CH2)l, or {(CH2)i-Y—(CH2)j}k, wherein Y is selected from the group consisting of CH2, an ether, a polyether, an amide, a polyamide, an ester, a sulfide, a urea, a thiourea, a guanidyl, a carbamoyl, a carbonate, a phosphate, a sulfate, a sulfoxide, an imine, a carbonyl, and a secondary amino group and wherein Y is optionally substituted by —X1-L?-X2-Z or -Z; R1–R6, independently of one another, are selected from the group consisting of H, —(CH2)p-D-Z, an alkyl, an alkenyl, an aryl, and an alkyl or alkyl ether optionally substituted by one or more of an alcohol, an aminoalcohol, an amine, an amide, an ether, a polyether, a polyamide, an ester, a mercaptan, an alkylthio, a urea, a thiourea, a guanidyl, or a carbamoyl group, andType: GrantFiled: July 28, 2003Date of Patent: February 6, 2007Assignee: Invitrogen Corp.Inventors: Yongliang Chu, Malek Masoud, Gulilat Gebeyehu
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Patent number: 7166745Abstract: Disclosed are compounds capable of facilitating transport of biologically active agents or substances into cells having the general structure: wherein Q is selected from the group consisting of N, O and S; L is any bivalent organic radical capable of linking each Q, such as C, CH, (CH2)1, or {(CH2)i—Y—(CH2)j}k, wherein Y is selected from the group consisting of CH2, an ether, a polyether, an amide, a polyamide, an ester, a sulfide, a urea, a thiourea, a guanidyl, a carbamoyl, a carbonate, a phosphate, a sulfate, a sulfoxide, an imine, a carbonyl, and a secondary amino group and wherein Y is optionally substituted by —X1—L?—X2—Z or —Z; R1–R6, independently of one another, are selected from the group consisting of H, —CH2)p—D—Z, an alkyl, an alkenyl, an aryl, and an alkyl or alkyl ether optionally substituted by one or more of an alcohol, an aminoalcohol, an amine, an amide, an ether, a polyether, a polyamide, an ester, a mercaptan, an alkylthio, a urea, a thiourea, a guanidyl, or a carbamoyl group, andType: GrantFiled: November 12, 1999Date of Patent: January 23, 2007Assignee: Invitrogen CorporationInventors: Yongliang Chu, Malek Masoud, Gulilat Gebeyehu