Patents Assigned to CellGate, Inc.
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Patent number: 7585834Abstract: The present invention provides compositions and methods for enhancing transport of biologically active compounds across biological membranes and across and into animal epithelial or endothelial tissues. The composition includes a biologically active agent and a transport moiety. The transport moiety includes a structure selected from the group consisting of (ZYZ)nZ, (ZY)nZ, (ZYY)nZ and (ZYYY)nZ. Subunit “Z” is L-arginine or D-arginine, and subunit “Y” is an amino acid that does not comprise an amidino or guanidino moiety. Subscript “n” is an integer ranging from 2 to 10. The method for enhancing transport involves the administration of the aforementioned composition.Type: GrantFiled: February 14, 2002Date of Patent: September 8, 2009Assignees: The Board of Trustees of the Leland Stanford Junior University, Cellgate, Inc.Inventors: Paul A. Wender, Jonathan B. Rothbard, Lee Wright, Erik L. Kreider, Christopher L. VanDeusen
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Patent number: 7312244Abstract: Conjugates in which polyamine analogs are conjugated to an amino acid are provided, as well as compositions comprising these conjugates. Methods of using these conjugates as anticancer treatments are also provided.Type: GrantFiled: November 8, 2001Date of Patent: December 25, 2007Assignee: Cellgate, Inc.Inventors: Linda Clifford, legal representative, Laurence J. Marton, Aldonia L. Valasinas, Venodhar K. Reddy, Benjamin Frydman, deceased
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Patent number: 7279502Abstract: Peptide conjugates in which cytocidal and cytostatic agents, such as polyamine analogs or naphthoquinones, are conjugated to a polypeptide recognized and cleaved by enzymes such as prostate-specific antigen (PSA) and cathepsin B are provided, as well as compositions comprising these conjugates. Methods of using these conjugates in the treatment of prostate diseases are also provided.Type: GrantFiled: October 20, 2004Date of Patent: October 9, 2007Assignee: Cellgate, Inc.Inventors: Linda Clifford, legal representative, Laurence J. Marton, Benjamin Frydman, deceased
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Patent number: 7253207Abstract: Novel quinones are provided, as well as compositions comprising these novel quinones. Methods of using the novel quinones in treatment of various indications including cancer are also provided.Type: GrantFiled: August 2, 2004Date of Patent: August 7, 2007Assignee: Cellgate, Inc.Inventors: Andrei V. Blokhin, Benjamin Frydman, Laurence J. Marton, Karen M. Neder, Jerry Shunneng Sun
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Publication number: 20070173436Abstract: This invention provides compositions and methods for enhancing delivery of drugs and other agents across epithelial tissues, including the skin, gastrointestinal tract, pulmonary epithelium, ocular tissues and the like. The compositions and methods are also useful for delivery across endothelial tissues, including the blood brain barrier. The compositions and methods employ a delivery enhancing transporter that has sufficient guanidino or amidino sidechain moieties to enhance delivery of a compound conjugated to the reagent across one or more layers of the tissue, compared to the non-conjugated compound. The delivery-enhancing polymers include, for example, poly-arginine molecules that are preferably between about 6 and 25 residues in length.Type: ApplicationFiled: October 2, 2006Publication date: July 26, 2007Applicant: Cellgate, Inc.Inventors: Jonathan Rothbard, Paul Wender, P. McGrane, Lalitha Sista, Thorsten Kirschberg
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Publication number: 20070161692Abstract: Novel conformationally restricted polyamine analogs are provided, as well as compositions comprising these novel polyamine analogs. Methods of using the novel polyamine analogs in treatment of diseases such as cancer are also provided. Also provided is a method of delivering these analogs specifically to tumor cells by covalently attaching polyamine analogs to porphyrin compounds, along with novel polyamine-porphyrin covalent conjugates.Type: ApplicationFiled: December 20, 2006Publication date: July 12, 2007Applicant: Cellgate, Inc.Inventors: Benjamin Frydman, Linda Clifford, Laurence Marton, Venodhar Reddy, Aldonia Valasinas, Andrei Blokhin, Hirak Basu
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Patent number: 7229961Abstract: This invention provides compositions and methods for enhancing delivery of drugs and other agents across epithelial tissues, including into and across ocular tissues and the like. The compositions and methods are also useful for delivery across endothelial tissues, including the blood brain barrier. The compositions and methods employ a delivery enhancing transporter that has sufficient guanidino or amidino sidechain moieties to enhance delivery of a compound conjugated to the reagent across one or more layers of the tissue, compared to the non-conjugated compound. The delivery-enhancing polymers include, for example, poly-arginine molecules that are preferably between about 6 and 25 residues in length (SEQ ID NO:86).Type: GrantFiled: February 25, 2002Date of Patent: June 12, 2007Assignee: Cellgate, Inc.Inventors: Jonathan B. Rothbard, Paul A. Wender, P. Leo McGrane, Lalitha V. S. Sista, Thorsten A. Kirschberg
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Patent number: 7186825Abstract: Novel conformationally restricted polyamine analogs are provided, as well as compositions comprising these novel polyamine analogs. Methods of using the novel polyamine analogs in treatment of diseases such as cancer are also provided. Also provided is a method of delivering these analogs specifically to tumor cells by covalently attaching polyamine analogs to porphyrin compounds, along with novel polyamine-porphyrin covalent conjugates.Type: GrantFiled: June 21, 2004Date of Patent: March 6, 2007Assignee: Cellgate, Inc.Inventors: Benjamin Frydman, Laurence J. Marton, Venodhar K. Reddy, Aldonia L. Valasinas, Andrei V. Blokhin, Hirak S. Basu
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Patent number: 7169814Abstract: Transport reagents and conjugates of therapeutic agents linked to transport reagents are described. In particular, the transport reagents have a plurality of guanidinium moieties that are either contiguous or spaced along a backbone, but are sufficiently removed from the backbone via tethers, to allow their interaction with a cell or tissue surface, leading to uptake of the therapeutic agent.Type: GrantFiled: December 11, 2002Date of Patent: January 30, 2007Assignees: The Board of Trustees of the Leland Stanford Junior University, Cellgate, Inc.Inventors: Jonathan B. Rothbard, Paul A. Wender, Kanaka Pattabiraman, Erin T. Pelkey, Theodore C. Jessop
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Patent number: 7026347Abstract: Porphyrin-polyamine conjugate compounds are disclosed which have anticancer and antitumor effects. The porphyrin moiety selectively localizes in tumors, while the polyamine moiety serves as a cytotoxic agent. Methods of making and using the porphyrin-polyamine conjugate compounds are also disclosed.Type: GrantFiled: June 24, 2003Date of Patent: April 11, 2006Assignee: CellGate, Inc.Inventors: Benjamin Frydman, Aldonia L. Valasinas, Venodhar K. Reddy, Hirak S. Basu, Aparajita Sarkar, Subhra Bhattacharya, Yu Wang, Laurence J. Marton, Andrei V. Blokhin
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Publication number: 20060030735Abstract: Conformationally restricted polyamine compounds useful in treatment of cancer and other diseases marked by abnormal cell proliferation are disclosed. Improved methods of synthesizing such compounds are also disclosed. In one method of the invention, a carbene-bearing or carbene equivalent-bearing compound is reacted with the double bond of an alkene compound to form a cyclopropyl ring as the first step in the synthesis.Type: ApplicationFiled: August 16, 2005Publication date: February 9, 2006Applicant: CellGate, Inc.Inventors: Benjamin Frydman, Linda Clifford, Aldonia Valasinas, Andrei Blokhin, Aparajita Sarkar, Hirak Basu, Venodhar Reddy, Laurence Marton, Yu Wang
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Patent number: 6982351Abstract: Conformationally restricted polyamine compounds useful in treatment of cancer and other diseases marked by abnormal cell proliferation are disclosed. Improved methods of synthesizing such compounds are also disclosed. In one method of the invention, a carbene-bearing or carbene equivalent-bearing compound is reacted with the double bond of an alkene compound to form a cyclopropyl ring as the first step in the synthesis.Type: GrantFiled: December 6, 2002Date of Patent: January 3, 2006Assignee: CellGate, Inc.Inventors: Benjamin Frydman, Aldonia L. Valasinas, Andrei V. Blokhin, Aparajita Sarkar, Hirak S. Basu, Venodhar K. Reddy, Laurence J. Marton, Yu Wang
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Publication number: 20040186045Abstract: This invention provides compositions and methods for enhancing delivery of drugs and other agents across epithelial tissues, including the skin, gastrointestinal tract, pulmonary epithelium, ocular tissues and the like. The compositions and methods are also useful for delivery across endothelial tissues, including the blood brain barrier. The compositions and methods employ a delivery enhancing transporter that has sufficient guanidino or amidino sidechain moieties to enhance delivery of a compound conjugated to the reagent across one or more layers of the tissue, compared to the non-conjugated compound. The delivery-enhancing polymers include, for example, poly-arginine molecules that are preferably between about 6 and 25 residues in length.Type: ApplicationFiled: December 17, 2003Publication date: September 23, 2004Applicant: CellGate, Inc., a Delaware corporationInventors: Jonathan B. Rothbard, Paul A. Wender, P. Leo McGrane, Lalitha V.S. Sista, Thorsten A. Kirschberg
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Patent number: 6759387Abstract: This invention provides compositions and methods for enhancing delivery of drugs and other agents across epithelial tissues, including the skin, gastrointestinal tract, pulmonary epithelium, and the like. The compositions and methods are also useful for delivery across endothelial tissues, including the blood brain barrier. The compositions and methods employ a delivery enhancing transporter that has sufficient guanidino or amidino sidechain moieties to enhance delivery of a compound conjugated to the reagent across one or more layers of the tissue, compared to the non-conjugated compound. The delivery-enhancing polymers include, for example, poly-arginine molecules that are preferably between about 6 and 25 residues in length (SEQ ID NO:50).Type: GrantFiled: July 30, 2002Date of Patent: July 6, 2004Assignee: Cellgate, Inc.Inventors: Jonathan B. Rothbard, Paul A. Wender, P. Leo McGrane, Lalitha V. S. Sista, Thorsten A. Kirschberg
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Patent number: 6730293Abstract: This invention provides compositions and methods for enhancing delivery of glucocorticoids and ascomycins such as hydrocortisone, cyclosporin and FK506 across into and across one or more layers of the skin for the treatment of psoriasis and other inflammatory diseases of the skin.Type: GrantFiled: August 24, 2000Date of Patent: May 4, 2004Assignee: CellGate, Inc.Inventors: Jonathan B. Rothbard, Paul A. Wender, P. Leo McGrane, Lalitha V. S. Sista, Thorsten A. Kirschberg
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Patent number: 6669951Abstract: This invention provides compositions and methods for enhancing delivery of drugs and other agents across epithelial tissues, including the skin, gastrointestinal tract, pulmonary epithelium, ocular tissues and the like. The compositions and methods are also useful for delivery across endothelial tissues, including the blood brain barrier. The compositions and methods employ a delivery enhancing transporter that has sufficient guanidino or amidino sidechain moieties to enhance delivery of a compound conjugated to the reagent across one or more layers of the tissue, compared to the non-conjugated compound. The delivery-enhancing polymers include, for example, poly-arginine molecules that are preferably between about 6 and 25 residues in length.Type: GrantFiled: February 23, 2001Date of Patent: December 30, 2003Assignee: CellGate, Inc.Inventors: Jonathan B. Rothbard, Paul A. Wender, P. Leo McGrane, Lalitha V. S. Sista, Thorsten A. Kirschberg
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Patent number: 6593292Abstract: This invention provides compositions and methods for enhancing delivery of drugs and other agents across epithelial tissues, including the skin, gastrointestinal tract, pulmonary epithelium, and the like. The compositions and methods are also useful for delivery across endothelial tissues, including the blood brain barrier. The compositions and methods employ a delivery enhancing transporter that has sufficient guanidino or amidino sidechain moieties to enhance delivery of a compound conjugated to the reagent across one or more layers of the tissue, compared to the non-conjugated compound. The delivery-enhancing polymers include, for example, poly-arginine molecules that are preferably between about 6 and 25 residues in length.Type: GrantFiled: August 24, 2000Date of Patent: July 15, 2003Assignee: CellGate, Inc.Inventors: Jonathan B. Rothbard, Paul A. Wender, P. Leo McGrane, Lalitha V. S. Sista, Thorsten A. Kirschberg
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Publication number: 20030083256Abstract: This invention provides compositions and methods for enhancing delivery of drugs and other agents across epithelial tissues, including the skin, gastrointestinal tract, pulmonary epithelium, and the like. The compositions and methods are also useful for delivery across endothelial tissues, including the blood brain barrier. The compositions and methods employ a delivery enhancing transporter that has sufficient guanidino or amidino sidechain moieties to enhance delivery of a compound conjugated to the reagent across one or more layers of the tissue, compared to the non-conjugated compound. The delivery-enhancing polymers include, for example, poly-arginine molecules that are preferably between about 6 and 25 residues in length.Type: ApplicationFiled: July 30, 2002Publication date: May 1, 2003Applicant: CellGate, Inc.Inventors: Jonathan B. Rothbard, Paul A. Wender, P. Leo McGrane, Lalitha V.S. Sista, Thorsten A. Kirschberg
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Publication number: 20030032593Abstract: The present invention provides compositions and methods for enhancing transport of biologically active compounds across biological membranes and across and into animal epithelial or endothelial tissues. The composition includes a biologically active agent and a transport moiety. The transport moiety includes a structure selected from the group consisting of (ZYZ)nZ, (ZY)nZ, (ZYY)nZ and (ZYYY)nZ. Subunit “Z” is L-arginine or D-arginine, and subunit “Y” is an amino acid that does not comprise an amidino or guanidino moiety. Subscript “n” is an integer ranging from 2 to 10. The method for enhancing transport involves the administration of the aforementioned composition.Type: ApplicationFiled: February 14, 2002Publication date: February 13, 2003Applicant: CellGate, Inc.Inventors: Paul A. Wender, Jonathan B. Rothbard, Lee Wright, Erik L. Kreider, Christopher J. VanDeusen
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Publication number: 20030022831Abstract: This invention provides compositions and methods for enhancing delivery of drugs and other agents across epithelial tissues, including into and across ocular tissues and the like. The compositions and methods are also useful for delivery across endothelial tissues, including the blood brain barrier. The compositions and methods employ a delivery enhancing transporter that has sufficient guanidino or amidino sidechain moieties to enhance delivery of a compound conjugated to the reagent across one or more layers of the tissue, compared to the non-conjugated compound. The delivery-enhancing polymers include, for example, poly-arginine molecules that are preferably between about 6 and 25 residues in length.Type: ApplicationFiled: February 25, 2002Publication date: January 30, 2003Applicant: CellGate, Inc., a Delaware corporationInventors: Jonathan B. Rothbard, Paul A. Wender, P. Leo McGrane, Lalitha V.S. Sista, Thorsten A. Kirschberg