Patents Represented by Attorney Ling-Fong Chung
  • Patent number: 5977323
    Abstract: Two novel cytokines which are involved in an inflammatory response (inflammatory cytokines) are disclosed. The inflammatory cytokines have been isolated from activated peripheral blood, preferably monocytes adhered to plastic; or peripheral blood leukocytes induced with calcium ionophore and mezerin. The two cytokines are Gro .beta. and .gamma., and their cDNA and amino acid sequences are disclosed. The expression of the genes in various cells is presented. Assay and diagnostic utilities using the cytokines; recombinant materials and procedures; purification procedures; and monoclonal antibodies to the cytokines are also shown.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: November 2, 1999
    Assignees: Chiron Corporation, University of North Carolina at Chapel Hill
    Inventors: John Stephen Haskill, Peter Ralph, Danute E. Nitecki, George Martin
  • Patent number: 5858688
    Abstract: Two novel cytokines which are involved in an inflammatory response (inflammatory cytokines) are disclosed. The inflammatory cytokines have been isolated from activated peripheral blood, preferably monocytes adhered to plastic; or peripheral blood leukocytes induced with calcium ionophore and mezerin. The two cytokines are Gro .beta. and .gamma., and their cDNA and amino acid sequences are disclosed. The expression of the genes in various cells is presented. Assay and diagnostic utilities using the cytokines; recombinant materials and procedures; purification procedures; and monoclonal antibodies to the cytokines are also shown.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: January 12, 1999
    Assignees: Chiron Corporation, University of North Carolina at Chapel Hill
    Inventors: John Stephen Haskill, Peter Ralph, Danute E. Nitecki, George Martin
  • Patent number: 5814485
    Abstract: Methods for the production of interferon-.beta. polypeptides by bacterial cells, by culturing cells capable of producing IFN-.beta. polypeptide under conditions that induce increased production of IFN-.beta. polypeptide. Such conditions include, for example, low potassium cation concentration and/or very low sodium cation concentration and/or specific pH ranges.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: September 29, 1998
    Assignee: Chiron Corporation
    Inventors: Glenn Dorin, Patrick J. McAlary, Kathleen M. Wong
  • Patent number: 5814484
    Abstract: Methods for the expression of mammalian MIP-1.alpha. and MIP-1.beta. are disclosed. The methods generally comprise introducing into a yeast cell, a DNA molecule capable of directing the expression and if desired the secretion of either MIP-1.alpha. or MIP-1.beta.. Methods for expression of constructs encoding both MIP-1.alpha. and MIP-1.beta. are also described. The MIP molecules so produced are biologically active.
    Type: Grant
    Filed: January 31, 1995
    Date of Patent: September 29, 1998
    Inventors: Patricia Tekamp-Olson, Carol Ann Gallegos
  • Patent number: 5773223
    Abstract: A new endothelin B receptor has been identified, and the amino acid and nucleotide sequence of the receptor are provided. The nucleotide sequence is useful to construct expression cassettes and vectors to produce host cells which are capable of expressing the receptor, its mutants, fragments, or fusions. Such polypeptides are useful for identifying new endothelin agonists and antagonists.
    Type: Grant
    Filed: September 2, 1993
    Date of Patent: June 30, 1998
    Assignee: Chiron Corporation
    Inventors: Venkatakrishna Shyamala, Patricia Tekamp Olson
  • Patent number: 5747458
    Abstract: Compounds of the invention inhibit urokinase plasminogen activator: ##STR1## where R.sub.1 is lower alkyl, lower alkenyl, lower alkynyl, aryl, aralkyl, aryl-alkenyl, aryl-alkynyl, aryl-cycloalkyl, unsubstituted or substituted with 1-3 halo, OH, NH.sub.2, lower alkyl, halo-lower alkyl, lower alkoxy, lower alkylamino, lower alkylthio, CN or NO.sub.2 ;R.sub.2 is aryl or aralkyl, unsubstituted or substituted with 1-3 halo, OH, NH.sub.2, CN, NO.sub.2, lower alkyl, halo-lower alkyl, lower alkoxy, lower alkylamino, lower alkylthio, or cycloalkyl;R.sub.3, R.sub.5 and R.sub.9 are each independently H or lower alkyl;R.sub.4 is ##STR2## where R.sub.6 and R.sub.7 are each independently H, OH, NH.sub.2, CN, NO.sub.2, lower alkyl, halo-lower alkyl, lower alkoxy, lower alkylamino, lower alkylthio, or cycloalkyl, and n and m are each independently an integer from 1 to 3 inclusive; and pharmaceutically acceptable acid addition salts thereof.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: May 5, 1998
    Assignee: Chiron Corporation
    Inventors: Steve Rosenberg, Kerry L. Spear, Eric J. Martin
  • Patent number: 5679782
    Abstract: Oligonucleotides encoding effective urokinase-type plasminogen activator receptor antagonists have amino acid sequences selected from the group AEPMPHSLNFSQYLWYT, AEWHPGLSFGSYLWSKT, AEHTYSSLWDTYSPLAF, AESSLWTRYAWPSMPSY, AELDLWMRHYPLSFSNR, AEWSFYNLHLPEPQTIF, AETLFMDLWHDKHILLT, AEPLDLWSLYSLPPLAM, AESLPTLTSILWGKESV, AESQTGTLNTLFWNTLR, AESSLWRIFSPSALMMS, AEPALLNWSFFFNPGLH, AEAWFLSNTMKALSARL, AEPTLWQLYQFPLRLSG, AEISFSELMWLRSTPAF, AEWITSSPPLTQYLWGF, AEMHRSLWEWYVPNQSA, AEIKTDEKMGLWDLYSM, AEILNFPLWHEPLWSTE, AELSEADLWITWFGMGS, AESVQYSKLWKPNTTLA, AEPLSLYQKKTLRHFAN, AELPRTNPVTAVKNPSF, AEQLNRSIPDLQFSMFN, and AESHIKSLLDSSTWFLP, or active analogs or active portions thereof.
    Type: Grant
    Filed: May 10, 1995
    Date of Patent: October 21, 1997
    Assignee: Chiron Corporation
    Inventors: Steven Rosenberg, Michael V. Doyle
  • Patent number: 5674706
    Abstract: A method is provided for expressing non-yeast proteins under the control of ADH2 regulatory sequences in a yeast host having enhanced expression of ADR I. Transformed yeast hosts are also provided.
    Type: Grant
    Filed: May 15, 1995
    Date of Patent: October 7, 1997
    Assignee: Chiron Corporation
    Inventor: Jeffrey R. Shuster
  • Patent number: 5620867
    Abstract: The purification and cloning of bone morphogenetic proteins are disclosed, as well as production of BMP and its analogs thereof by recombinant DNA techniques. Pharmaceutical compositions comprising BMP and the use of such compositions are also disclosed.
    Type: Grant
    Filed: October 26, 1993
    Date of Patent: April 15, 1997
    Assignee: Chiron Corporation
    Inventors: Michael C. Kiefer, Frank R. Masiarz, Philip J. Barr
  • Patent number: 5523215
    Abstract: A method for isolating a desired protein which comprises: providing a host cell expressing the desired protein as an insoluble aggregate; culturing the host cell with an effective mount of Cu.sup.++ ; disrupting the host cell producing a lysate; incubating the insoluble fraction non-disulfide-bond reducing or non-copper competing chaotropic conditions to solubilize contaminants; separating the insoluble from the soluble fraction; and exposing the insoluble fraction to disulfide-bond reducing or copper competing chaotropic conditions to solubilize the desired protein.
    Type: Grant
    Filed: April 16, 1992
    Date of Patent: June 4, 1996
    Assignee: Chiron Corporation
    Inventors: Lawrence S. Cousens, Patricia Tekamp-Olson
  • Patent number: 5466781
    Abstract: A process is described for producing M-CSF from bacteria. It includes: fermentation of bacteria containing M-CSF DNA; harvest of the fractions that contain the M-CSF protein (refractile bodies); primary recovery of the protein; solubilization and denaturation of refractile bodies; M-CSF refolding; purification by column chromatography and other methods; and formulation of the properly refolded M-CSF. This method is advantageous over prior methods in terms of yield and purity.
    Type: Grant
    Filed: March 8, 1993
    Date of Patent: November 14, 1995
    Assignee: Chiron Therapeutics
    Inventors: Glenn Dorin, David R. Gray, Byeong S. Chang, Cynthia A. Cowgill, Robert J. Milley
  • Patent number: 5330895
    Abstract: Dopamine releasing protein (DARP) is a protein which stimulates release of dopamine from dopaminergic neurons, and is effective at extremely low concentrations. DARP is useful for stimulating vertebrate nervous systems, and for treatment of Parkinson's disease. Antibodies to DARP are useful for inhibiting dopamine release, and for quantifying the concentration of DARP in samples.
    Type: Grant
    Filed: September 17, 1992
    Date of Patent: July 19, 1994
    Inventors: Victor D. Ramirez, Frank Marcus
  • Patent number: 5248769
    Abstract: A refractile material containing a heterologous protein is recovered from a host microorganism cell culture transformed to produce the protein. One recovery process involves first reducing the ionic strength of the culture medium prior to disruption to a level effective in preventing reaggregation of cellular debris with refractile material after disruption, disrupting the desalted culture, optionally adding material to the disruptate to create a density or viscosity gradient and separating the refractile material from the cellular debris by high-speed centrifugation. Preferably the salt removal step is carried out by diafiltration and the heterologous protein comprises recombinant M-CSF, IL-2 or IFN-.beta..
    Type: Grant
    Filed: November 25, 1991
    Date of Patent: September 28, 1993
    Assignee: Cetus Oncology Corporation
    Inventor: Glenn Dorin