Patents Assigned to Chiron Corporation
  • Publication number: 20030077798
    Abstract: The invention provides truncated GSK3 polypeptides capable of crystallization, including GSK3&agr; and GSK3&bgr; polypeptides, and use of these polypeptides to identify and optimize GSK3 inhibitors. Also provided are GSK3 polypeptides having at least one substituted amino acid that differs from wild-type GSK3, wherein the substituted amino acid is incapable of being phosphorylated. The invention finds use in providing methods of identifying and optimizing compounds useful for treating diseases mediated by GSK3 activity, including Alzheimer's disease, type 2 diabetes, and inflammation.
    Type: Application
    Filed: July 31, 2002
    Publication date: April 24, 2003
    Applicant: Chiron Corporation
    Inventors: Stephen D. Harrison, John A. Hall, Maria Calderon-Cacia, Ziyang Zhong, Eric Y. Fang, Doris G. Coit, Steve H. Nguyen, Angelica Medina-Selby
  • Publication number: 20030077831
    Abstract: Compositions and methods for expression of heterologous mammalian proteins and their secretion in the biologically active mature form using a yeast host cell as the expression system are provided. Compositions of the invention are nucleotide sequences encoding a signal peptide sequence for a yeast secreted protein, an optional leader peptide sequence for a yeast secreted protein, a native propeptide leader sequence for a mature protein of interest, and a sequence for the mature protein of interest, all operably linked to a yeast promoter. Each of these elements is associated with a processing site recognized in vivo by a yeast proteolytic enzyme. Any or all of these processing sites may be a preferred processing site that has been modified or synthetically derived for more efficient cleavage in vivo. The compositions are useful in methods for expression of heterologous mammalian proteins and their secretion in the biologically active mature form.
    Type: Application
    Filed: October 25, 2002
    Publication date: April 24, 2003
    Applicant: Chiron Corporation
    Inventor: Patricia Tekamp-Olson
  • Publication number: 20030072793
    Abstract: The present invention is directed to a method for delivering agents to the central nervous system by way of a tissue innervated by the trigeminal nerve that is outside the nasal cavity. Such a method of delivery can be useful in the treatment of central nervous system and/or brain disorders.
    Type: Application
    Filed: November 21, 2002
    Publication date: April 17, 2003
    Applicant: Chiron Corporation
    Inventors: William H. Frey, Robert Gary Thorne
  • Patent number: 6548634
    Abstract: Peptidic compositions having FGF receptor affinity, as well as fusion proteins and oligomers of the same, are provided. The subject peptidic compounds are characterized by having little or no homology to naturally occurring bFGF. The subject fusion proteins include the peptidic composition linked to an oligomerization domain, either directly or through a linking group and optionally further include a heparin binding domain. The subject peptidic compositions, fusion proteins and oligomers thereof find use in a variety of applications, including both research and therapeutic applications, in which FGF receptor ligands are employed.
    Type: Grant
    Filed: September 28, 1999
    Date of Patent: April 15, 2003
    Assignee: Chiron Corporation
    Inventors: Marcus Ballinger, Michael Kavanaugh
  • Patent number: 6544523
    Abstract: The invention provides for DNA encoding Fas ligand muteins and chimeras and the proteins encoded thereby. The invention further includes the use of DNA and vectors to produce transformed cells expressing the mutant or chimeric Fas ligand. When the Fas ligand of the invention is a non cleavable form, the cells expressing the Fas ligand are useful in vitro for identifying Fas expressing cells and in vitro or in vivo for reducing populations of Fas expressing cells. Thus, in other embodiments, the present invention is also directed to a method for treating a patient, for example a mammal, for autoimmune disease or transplant rejection by administering a Fas ligand therapeutic agent. The therapeutic agent is a polypeptide, a polynucleotide encoding the polypeptide or a small molecule. The polypeptides include full-length Fas ligand polypeptide, or a biologically active variant, derivative, portion, fusion or peptide thereof.
    Type: Grant
    Filed: November 12, 1997
    Date of Patent: April 8, 2003
    Assignee: Chiron Corporation
    Inventor: Keting Chu
  • Publication number: 20030065012
    Abstract: Isoxazole estrogen receptor agonist and antagonist compounds having unexpected and surprising activity in modulating estrogen receptor activity are described. In addition, methods and compositions for treating or preventing estrogen receptor-mediated disorders are disclosed. The compounds, methods, and compositions of the invention have utility in preventing or treating estrogen receptor-mediated disorders such as osteoporosis, breast and endometrial cancers, atherosclerosis, and Alzheimer's disease.
    Type: Application
    Filed: April 25, 2002
    Publication date: April 3, 2003
    Applicant: Chiron Corporation
    Inventors: Verena D. Huebner, Xiaodong Lin, Ian James, Liya Chen, Manoj Desai, Jennifer C. Moore, Beata Krywult, Thayalan Navaratnam, Rajinder Singh, Rob Trainor, Liang Wang
  • Publication number: 20030060415
    Abstract: The invention is a treatment for coronary conditions by delivering a therapeutic agent to the pericardial space. The therapeutic agent can be delivered by internal entry through the atrium or venticle, or by external entry through the chest cavity. The therapeutic agent can be a polypeptide, polynucleotide or other drug.
    Type: Application
    Filed: October 2, 2002
    Publication date: March 27, 2003
    Applicant: Chiron Corporation
    Inventor: David T. Hung
  • Patent number: 6537745
    Abstract: The present invention is directed to an antigen diluent or buffer for antigens, in particular HCV recombinant antigens, comprising a reducing agent. The antigen diluent or buffer serves as a stabilizing buffer for the antigens. The present invention is also directed to antigen diluents or buffers for use in an automated immunoassay.
    Type: Grant
    Filed: February 2, 2001
    Date of Patent: March 25, 2003
    Assignee: Chiron Corporation
    Inventors: David Y. Chien, Phillip Arcangel, Stephen Tirell, Wanda Zeigler
  • Patent number: 6534064
    Abstract: A method for producing a cellular immune response in a vertebrate subject comprising administering to the vertebrate subject a vaccine composition comprising a protein particle antigen and a pharmaceutically acceptable excipient is disclosed.
    Type: Grant
    Filed: October 10, 2000
    Date of Patent: March 18, 2003
    Assignee: Chiron Corporation
    Inventors: Derek O'Hagan, Manmohan Singh
  • Patent number: 6531307
    Abstract: The present invention provides recombinant viral vectors carrying a vector construct which directs the expression of a gene product (eg. HSVTK) that activates a compound with little or no cytotoxicity into a toxic product. Also provided are methods of destroying or inhibiting pathogenic agents in a warm blooded animal, comprising the step of administering to the animal a viral vector such as that described above, in order to inhibit or destroy the pathogenic agent.
    Type: Grant
    Filed: May 31, 1995
    Date of Patent: March 11, 2003
    Assignee: Chiron Corporation
    Inventors: Jack R. Barber, Harry E. Gruber, Douglas J. Jolly
  • Patent number: 6531276
    Abstract: Polynucleotide sequences are provided for the diagnosis of the presence of retroviral infection in a human host associated with lymphadenopathy syndrome and/or acquired immune deficiency syndrome, for expression of polypeptides and use of the polypeptides to prepare antibodies, where both the polypeptides and antibodies may be employed as diagnostic reagents or in therapy, e.g., vaccines and passive immunization. The sequences provide detection of the viral infectious agents associated with the indicated syndromes and can be used for expression of antigenic polypeptides.
    Type: Grant
    Filed: March 14, 1995
    Date of Patent: March 11, 2003
    Assignee: Chiron Corporation
    Inventors: Paul A. Luciw, Dino Dina
  • Publication number: 20030044774
    Abstract: Multiple epitope fusion proteins and immunoassays using the same are disclosed. The multiple epitope fusion proteins are encompassed by the general structural formula (A)x-(B)y-Cz which represents a linear amino acid sequence, wherein B is an amino acid sequence of an epitope or cluster of epitopes and each B contains at least five and not more than 1,000 amino acids, y is an integer of 2 or more, A and C are each independently an amino acid sequence of an epitope or cluster of epitopes not adjacent to B in nature and x and z are each independently an integer of 0 or more wherein at least one of x and z is 1 or more.
    Type: Application
    Filed: June 17, 2002
    Publication date: March 6, 2003
    Applicant: Chiron Corporation
    Inventors: Pablo D.T. Valenzuela, David Ying Chien
  • Patent number: 6525102
    Abstract: Stabilized liquid polypeptide-containing pharmaceutical compositions are provided. The compositions comprise an amino acid base, which serves as the primary stabilizing agent of the polypeptide, and an acid and/or its salt form to buffer the solution within an acceptable pH range for stability of the polypeptide. The compositions are near isotonic. Methods for increasing stability of a polypeptide in a liquid pharmaceutical composition and for increasing storage stability of such a pharmaceutical composition are also provided.
    Type: Grant
    Filed: October 3, 2000
    Date of Patent: February 25, 2003
    Assignee: Chiron Corporation
    Inventors: Bao-Lu Chen, Maninder S. Hora
  • Publication number: 20030036511
    Abstract: Methods for improving purification and quantification of platelet derived growth factor (PDGF) proteins having structural heterogeneity are provided. Preparation of substantially pure isoforms of these proteins is achieved using TSK sulfopropyl cation exchange chromatography and reverse phase high performance liquid chromatography. A reverse charged capillary zone electrophoresis method enables quantification of substantially pure isoforms of these proteins resulting from endoproteolytic post-translational modifications. Compositions of the invention are substantially purified isoforms of secreted PDGF proteins having structural heterogeneity, more particularly purified intact, single-clipped, and double-clipped isoforms of recombinant PDGF-BB. Pharmaceutical compositions comprising at least one of these substantially purified recombinant PDGF isoforms and methods for their use in promoting wound healing are also provided.
    Type: Application
    Filed: July 26, 2002
    Publication date: February 20, 2003
    Applicant: Chiron Corporation
    Inventors: Michael Kunitani, An D. Tran, Hugh Parker
  • Patent number: 6521225
    Abstract: The present invention is directed to a recombinant adenovirus vector comprising two inverted terminal repeats (ITRs) each of which comprises a D-sequence having (i) from 5 to 15 native nucleotides and (ii) one or more deletions or substitutions therein.
    Type: Grant
    Filed: September 2, 1997
    Date of Patent: February 18, 2003
    Assignees: Chiron Corporation, Advanced Research and Technology Institute
    Inventors: Arun Srivastava, Selvarangan Ponnazhagan, Robert H. Chloemer, Xu-Shan Wang, Mervin C. Yoder, Shang-Zhen Zhou, Jaime Escobedo, Varavani Dwarki
  • Patent number: 6521423
    Abstract: Methods for obtaining recombinantly produced, C-terminally truncated, E1 and E2 polypeptides from cell lysates are disclosed. The intracellularly expressed truncated molecules display improved biological properties as compared to their secreted counterparts.
    Type: Grant
    Filed: October 19, 2000
    Date of Patent: February 18, 2003
    Assignee: Chiron Corporation
    Inventors: Michael Houghton, Qui-Lim Choo, Sergio Abrignani, David Chien, Mark Selby, Edward Glazer
  • Patent number: 6514731
    Abstract: Human hepatitis C virus (HCV) has been identified as the aetiological agent of non-A, non-B hepatitis (NANBH). HCV viruses display considerable genotypic and phenotypic heterogeneity. Thus, there is considerable need in the art for more sensitive reagents that facilitate the detection of HCV variants. The genome of hepatitis C virus (HCV) consists of seven functional regions: the core, E1, E2/NS1, NS2, NS3, NS4, and NS5 regions. An attempt was made to improve the sensitivity of anti-HCV assays by developing multiple copy epitope fusion antigens (MEFAs) which incorporate the major immunodominant epitopes from the functional regions of the HCV genome. These MEFAs are encompassed by the following generic structural formula: (A)x—(B)y—(C)z. This formula represents a linear amino acid sequence comprising multiple copies of one HCV epitope (A) linked to multiple copies of another HCV epitope (B) which in turn is linked to multiple copies of yet another HCV epitope (C).
    Type: Grant
    Filed: May 24, 1996
    Date of Patent: February 4, 2003
    Assignee: Chiron Corporation
    Inventors: Pablo D. T. Valenzuela, David Ying Chien
  • Patent number: 6512102
    Abstract: The invention is generally directed to compositions and methods for affecting signal transduction using the casein kinase I (CKI) gene or gene product. The invention is more specifically directed to affecting the Wnt signal pathway using the CKI gene or gene product. The invention is particularly directed to using the CKI gene or gene product to treat and diagnose cancer, particularly breast and colon cancer. CKI&egr; is the preferred species. The field of the invention is compositions and methods for modulating signal transduction using the (CKI) gene or gene products and variants thereof. The invention is more specifically directed to modulating the Wnt signal pathway using the CKI gene or gene product. The invention is particularly directed to using the CKI gene or gene product to treat and diagnose disorders mediated by the Wnt signal pathway, especially hyperproliferative disorders, particularly breast and colon cancer.
    Type: Grant
    Filed: December 23, 1999
    Date of Patent: January 28, 2003
    Assignee: Chiron Corporation
    Inventors: Licen Xu, Stephen D. Harrison, Lewis T. Williams
  • Publication number: 20030017508
    Abstract: Provided are peptidomimetic protein-binding arrays, their manufacture, use, and application. The protein-binding array elements of the invention include a peptidomimetic segment linked to a solid support via a stable anchor. The invention contemplates peptidomimetic array element library synthesis, distribution, and spotting of array elements onto solid planar substrates, labeling of complex protein mixtures, and the analysis of differential protein binding to the array. The invention also enables the enrichment or purification, and subsequent sequencing or structural analysis of proteins that are identified as differential by the array screen. Kits including proteomic microarrays in accordance with the present invention are also provided.
    Type: Application
    Filed: July 3, 2002
    Publication date: January 23, 2003
    Applicant: Chiron Corporation
    Inventors: Deborah Charych, Eric Beausoleil, Ronald N. Zuckermann
  • Publication number: 20030017517
    Abstract: A polynucleotide sequence as shown in SEQ ID NO:1 is associated with metastatic potential of cancer cells, especially breast cancer cells. Methods are provided for determining the risk of metastasis of a tumor, by determining whether a tissue sample from a tumor expresses a polypeptide or mRNA encoded by a polynucleotide as shown in SEQ ID NO:1. Also provided are therapeutic methods and compositions.
    Type: Application
    Filed: July 18, 2002
    Publication date: January 23, 2003
    Applicant: Chiron Corporation
    Inventors: Joerg Kaufmann, Greg Harrowe, Christoph Reinhard, Sanmao Kang