Patents Assigned to Cell Therapeutics, Inc.
  • Publication number: 20030032181
    Abstract: The present invention relates to a method of producing radial glial cells from neural stem cells, particularly by contacting neural stem cells with epidermal growth factor (EGF), fibroblast growth factor 2 (FGF-2) and/or TGF&agr;. Leukemia inhibitory factor (LIF) and ciliary neurotrophic factor (CNTF) can optionally be added to enhance the effect of EGF, FGF-1 or TGF&agr;. Also provided are methods of producing radial glial cells from ependymal cells, as well as methods of proliferating ependymal cells.
    Type: Application
    Filed: July 17, 2002
    Publication date: February 13, 2003
    Applicant: Stem Cell Therapeutics Inc.
    Inventors: Samuel Weiss, Christopher Gregg
  • Patent number: 6503700
    Abstract: There is disclosed cDNA sequences and polypeptides having the enzyme CDP-diacylglycerol synthase (CDS) activity. CDS is also known as CTP:phosphatidate cytidylyltransferase. There is further disclosed methods for isolation and production of polypeptides involved in phosphatidic acid metabolism and signaling in mammalian cells, in particular, the production of purified forms of CDS.
    Type: Grant
    Filed: March 31, 1999
    Date of Patent: January 7, 2003
    Assignee: Cell Therapeutics, Inc.
    Inventor: David W. Leung
  • Publication number: 20020183243
    Abstract: The invention provides polyglutamic acid-therapeutic agent conjugates and methods for their preparation and use.
    Type: Application
    Filed: January 22, 2002
    Publication date: December 5, 2002
    Applicant: Cell Therapeutics, Inc.
    Inventors: Rama Bhatt, Peter de Vries, J. Peter Klein, John Tulinsky, Robert A. Lewis, Jack W. Singer
  • Publication number: 20020168747
    Abstract: There is disclosed cDNA sequences and polypeptides having the enzyme CDP-diacylglycerol synthase (CDS) activity. CDS is also known as CTP:phosphatidate cytidylyltransferase. There is further disclosed methods for isolation and production of polypeptides involved in phosphatidic acid metabolism and signaling in mammalian cells, in particular, the production of purified forms of CDS.
    Type: Application
    Filed: May 2, 2002
    Publication date: November 14, 2002
    Applicant: CELL THERAPEUTICS, INC.
    Inventor: David W. Leung
  • Publication number: 20020169125
    Abstract: A polyanionic polymer can improve the bioactivity and water-solubility properties of a drug to which it is joined. The inventive method provides a monodispersed preparation of a recombinantly-produced polyanionic polymer that can be easily manipulated, such as lengthened. An active moiety may be chemically or recombinantly joined to a polyanionic polymer to increase its biological half-life and/or solubility. The instant invention also provides a method for targeting the delivery of a polyanionic polymer conjugate or fusion protein to a specific cell type or tissue.
    Type: Application
    Filed: March 20, 2002
    Publication date: November 14, 2002
    Applicant: CELL THERAPEUTICS, INC.
    Inventors: David W. Leung, Philip A. Bergman, Alan Lofquist, Gregory E. Pietz, Christopher K. Tompkins, David W. Waggoner
  • Patent number: 6469017
    Abstract: A method for blocking IL-12 signaling by administration of the following compound: wherein, R1 is H, CH3, sulfate, phosphate, or salt thereof; R2 is alkyl (C1-12), alkoxyalkyl (C1-11), dialkoxyalkyl, CH2C6H5, —CH2-furan, biotin; and R3 is H, CH3 or CH2C6H5.
    Type: Grant
    Filed: January 16, 1998
    Date of Patent: October 22, 2002
    Assignee: Cell Therapeutics, Inc.
    Inventors: Stephen J. Klaus, J. Peter Klein, Anil M. Kumar
  • Publication number: 20020150945
    Abstract: A method for high-throughput genomics analysis, to identify the therapeutic or diagnostic utility of genes, entails the use of a construct to disrupt a gene or alleles of a gene in cells of interest. Arrays of such cells can be used to monitor such disrupted cells phenotypically in the context, for example, of testing drug candidates. Polynucleotides that comprise part of the disrupted genes can be recovered from such “knockout” cells, by virtue of an origin of replication or a host cell selection marker sequence that is part of the construct. The recovered polynucleotides can be used to identify the disrupted genes or to make homologous recombination vectors, which in turn can be employed to make multi-allele knockout cells. Double-stranded RNA molecules designed to target the recovered polynucleotide are used to downregulate the polynucleotide in vitro and in vivo, following determination of a therapeutically effective dosage of the RNAi molecule.
    Type: Application
    Filed: June 13, 2002
    Publication date: October 17, 2002
    Applicant: Cell Therapeutics, Inc.
    Inventors: Robert Finney, David Leung, Alan Lofquist
  • Publication number: 20020107269
    Abstract: The invention relates to benzoxazoles and the use thereof to inhibit lysophosphatidic acid acyltransferase &bgr; (LPAAT-&bgr;) activity. The invention further relates to methods of treating cancer using said benzoxazoles. The invention also relates to methods for screening for LPAAT-&bgr; activity.
    Type: Application
    Filed: October 31, 2001
    Publication date: August 8, 2002
    Applicant: CELL THERAPEUTICS, INC.
    Inventors: Lynn Bonham, J. Peter Klein, Robert E. Finney, David M. Hollenback, Scott A. Shaffer, Norina M. Tang, Thayer H. White, David W. Leung
  • Publication number: 20020103211
    Abstract: Novel tricyclic compounds are found to be useful for the treatment or prevention of symptoms or manifestations associated with diseases or disorders affected by cytokine intracellular signaling.
    Type: Application
    Filed: November 29, 2000
    Publication date: August 1, 2002
    Applicant: Cell Therapeutics, Inc.
    Inventors: Baoqing Gong, J. Peter Klein, Michael Coon
  • Publication number: 20020103195
    Abstract: The invention relates to triazines and the use thereof to inhibit lysophosphatidic acid acyltransferase &bgr; (LPAAT-&bgr;) activity. The invention further relates to methods of treating cancer using said triazines. The invention also relates to methods for screening for LPAAT-&bgr; activity.
    Type: Application
    Filed: October 31, 2001
    Publication date: August 1, 2002
    Applicant: CELL THERAPEUTICS,INC.
    Inventors: Lynn Bonham, J. Peter Klein, Robert E. Finney, David M. Hollenback, Scott A. Shaffer, Norina M. Tang, Thayer H. White, David W. Leung
  • Publication number: 20020094536
    Abstract: A method for high-throughput, genomics analysis, to identify the therapeutic or diagnostic utility of genes, entails the use of a construct to disrupt a gene or alleles of a gene in cells of interest. Arrays of such cells can be used to monitor such disrupted cells phenotypically in the context, for example, of testing drug candidates. Polynucleotides that comprise part of the disrupted genes can be recovered from such “knockout” cells, by virtue of an origin of replication or a host cell selection marker sequence that is part of the construct. The recovered polynucleotides can be used to identify the disrupted genes or to make homologous recombination vectors, which in turn can be employed to make multi-allele knockout cells.
    Type: Application
    Filed: December 28, 2001
    Publication date: July 18, 2002
    Applicant: CELL THERAPEUTICS, INC.
    Inventors: Alan Lofquist, Robert E. Finney, David Leung
  • Patent number: 6331254
    Abstract: Methods which employ thin layer chromatography for separating and detecting hydrophobic target molecules are particularly useful in separating biologically relevant lipids. By utilizing non-destructive detection techniques, these methods also can be adapted to further quantification or structural analysis.
    Type: Grant
    Filed: December 17, 1999
    Date of Patent: December 18, 2001
    Assignee: Cell Therapeutics, Inc.
    Inventors: Thayer White, Edward Nudelman
  • Patent number: 6316458
    Abstract: A category of hydroxyalkyl-substituted xanthines are useful in treating patients suffering from disorders associated with impaired glucose metabolism or impaired insulin function. Use of these compounds, for example, restores insulin responsiveness in otherwise insulin-resistant Type 2 diabetic patients, thus reducing elevated blood glucose levels. The subject compounds also act to restore certain defects of lipid metabolism and to enhance the effects of insulin in general. Insulin-enhancing compositions and methods of treating disorders of glucose metabolism are provided.
    Type: Grant
    Filed: April 25, 2000
    Date of Patent: November 13, 2001
    Assignee: Cell Therapeutics, Inc.
    Inventors: Jerry L. Nadler, Thomas W. Balon, Yoko Yamaguchi
  • Patent number: 6274363
    Abstract: Three new isoforms of phosphatidylcholine phospholipase D, hPLD2.1, hPLD2.2 and hPLD1.5, can be produced recombinantly and are useful for screening compounds, as drug candidates, for an ability to modify PCPLD activity.
    Type: Grant
    Filed: June 30, 1998
    Date of Patent: August 14, 2001
    Assignee: Cell Therapeutics, Inc.
    Inventors: David W. Leung, Christopher K. Tompkins
  • Patent number: 6200769
    Abstract: There is disclosed cDNA sequences and polypeptides having the enzyme CDP-diacylglycerol synthase (CDS) activity. CDS is also known as CTP:phosphatidate cytidylyltransferase. There is further disclosed methods for isolation and production of polypeptides involved in phosphatidic acid metabolism and signaling in mammalian cells, in particular, the production of purified forms of CDS.
    Type: Grant
    Filed: June 16, 1999
    Date of Patent: March 13, 2001
    Assignee: Cell Therapeutics, Inc.
    Inventors: David W. Leung, Reitha Weeks
  • Patent number: 6136964
    Abstract: There is disclosed cDNA sequences and polypeptides having the enzyme lysophosphatidic acid acyltransferase (LPAAT) activity. LPAAT is also known as 1-acyl sn-glycerol-3-phosphate acyltransferase.
    Type: Grant
    Filed: March 19, 1996
    Date of Patent: October 24, 2000
    Assignee: Cell Therapeutics, Inc.
    Inventors: David W. Leung, James W. West, Christopher K. Tompkins
  • Patent number: 6133274
    Abstract: Disclosed are therapeutic compounds having the formula:(R)j-(core moiety),including resolved enantiomers, diastereomers, hydrates, salts, solvates and mixtures thereof. j is an integer from one to three, the core moiety is either non-cyclic or comprises at least one five- to seven-membered ring structure, R may be selected from the group consisting of hydrogen, halogen, hydroxyl, amino, substituted or unsubstituted benzyl, C.sub.1-6 alkyl or C.sub.1-6 alkenyl, and at least one R has the formula I: ##STR1## n is an integer from seven to twenty and at least one of X or Y is --OH. The other of X or Y, which is not --OH, is hydrogen, CH.sub.3 --, CH.sub.3 --CH.sub.2 --, CH.sub.3 --(CH.sub.2).sub.2 -- or (CH.sub.3).sub.2 --CH.sub.2 --, and each W.sub.1, W.sub.2, and W.sub.3 is independently hydrogen, CH.sub.3 --, CH.sub.3 --CH.sub.2 --, CH.sub.3 --(CH.sub.2).sub.2 -- or (CH.sub.3).sub.2 --CH.sub.2 --. The X, Y, W.sub.1, W.sub.2, or W.sub.
    Type: Grant
    Filed: November 26, 1996
    Date of Patent: October 17, 2000
    Assignee: Cell Therapeutics, Inc.
    Inventors: Gail E. Underiner, David Porubek, J. Peter Klein, Paul Woodson
  • Patent number: 6121270
    Abstract: Disclosed are enantiomers diastereomers, salts, solvates, hydrates and mixtures thereof, of formula I: ##STR1## The core moiety is non-cyclic or at least one five- to seven-membered ring, n is an integer from about 4 to about 16, R.sub.1 and R.sub.2 are hydrogen, halogen or C.sub.1-12 alkyl or alkenyl, and (CH.sub.2).sub.n may be substituted by a hydroxyl, halogen, oxygen, a (C.sub.1-4) alkyl group or a dimethylamino group. The compounds and pharmaceutical composition thereof are useful in methods for treating an individual having a disease or treatment-induced toxicity, mediated by second messenger activity.
    Type: Grant
    Filed: June 17, 1998
    Date of Patent: September 19, 2000
    Assignee: Cell Therapeutics, Inc.
    Inventors: Gail Underiner, J. Peter Klein, John Michnick, Alistair Leigh, Anil Kumar
  • Patent number: 6103730
    Abstract: Compounds and pharmaceutical compositions, including resolved enantiomers and/or diastereomers, hydrates, salts, solvates and mixtures thereof, have the formula:CORE MOIETY--(R).sub.jIn these compounds, j is an integer from one to three; the core moiety is a cyclic core, the cyclic core being non-cyclic or at least one five- to seven-member non-heterocyclic ring or heterocycle; and R is selected from the group consisting of amine, hydrogen, halogen, hydroxyl, substituted or unsubstituted C.sub.(1-10) alkyl, C.sub.(2-10) alkenyl, cyclic or heterocyclic group or formula I. At least one R having formula I: ##STR1## In formula I, n is an integer from four to twenty; and each R.sub.1 or R.sub.2 is independently hydrogen, substituted or unsubstituted C.sub.(1-20) alkyl, C.sub.(1-20) alkoxyl, C.sub.(2-20) alkenyl or cyclic or heterocyclic group.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: August 15, 2000
    Assignee: Cell Therapeutics, Inc.
    Inventors: J. Peter Klein, Gail E. Underiner, Anil M. Kumar, Lance H. Ridgers
  • Patent number: 6100271
    Abstract: Therapeutic compounds with at least one carboxylic acid, ester or amide-substituted side chain have the formula:CORE MOIETY --(R).sub.jwherein j is an integer from one to three. The core moiety is non-cyclic or cyclic (carbocyclic or heterocyclic). R may be selected from among hydrogen, halogen, hydroxyl, amino, substituted or unsubstituted C.sub.(1-10) alkyl, C.sub.(2-10) alkenyl, carbocyclic or heterocyclic groups and at least one R has the formula I: ##STR1## wherein: one or two p are the integer one, otherwise p is two; and n is an integer from three to twenty; R.sub.1 is selected from the group consisting of substituted and unsubstituted CH.sub.2 ; NR.sub.3, R.sub.3 being hydrogen, substituted or unsubstituted C.sub.(1-20) alkyl, C.sub.(1-20) alkoxyl, C.sub.(2-20) alkenyl or C.sub.(1-20) hydroxyalkyl, or carbocyclic or heterocyclic group; O; --CHR.sub.4 O--, R.sub.4 being substituted or unsubstituted C.sub.(1-20) alkyl, C.sub.(1-20) alkoxyl, C.sub.(2-20) alkenyl, C.sub.(1-20) hydroxyalkyl, or R.sub.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: August 8, 2000
    Assignee: Cell Therapeutics, Inc.
    Inventors: J. Peter Klein, Alistair J. Leigh, Gail E. Underiner, Anil M. Kumar