Patents by Inventor Paul O. P. Ts'o

Paul O. P. Ts'o 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).

  • Publication number: 20120034628
    Abstract: The present invention provides materials and methods for predicting the response of a disease state to a therapeutic agent. A targeting moiety specific for a biological marker is labeled with a reporter moiety and used to analyze cells characteristic of the disease state. The output of the reporter moiety, which may be fluorescence intensity, is compared to the output of reference standard analyzed under similar or identical conditions. The use of a reference standard allows biomarker reporting to be normalized. Biomarker values can then be correlated from sample to sample and from laboratory to laboratory based on quantitative calibration on a universal reference standard.
    Type: Application
    Filed: October 21, 2011
    Publication date: February 9, 2012
    Applicant: On-Q-Ity Inc.
    Inventors: Stephen A. Lesko, Paul O.P. Ts'o
  • Publication number: 20100075341
    Abstract: The present invention provides materials and methods for predicting the response of a disease state to a therapeutic agent. A targeting moiety specific for a biological marker is labeled with a reporter moiety and used to analyze cells characteristic of the disease state. The output of the reporter moiety, which may be fluorescence intensity, is compared to the output of reference standard analyzed under similar or identical conditions. The use of a reference standard allows biomarker reporting to be normalized. Biomarker values can then be correlated from sample to sample and from laboratory to laboratory based on quantitative calibration on a universal reference standard.
    Type: Application
    Filed: June 10, 2009
    Publication date: March 25, 2010
    Inventors: Stephen A. LESKO, Paul O.P. Ts'o
  • Patent number: 7262177
    Abstract: A conjugate of formula A-L-P, in which: A represents a glycosylated/galactosylated peptide that binds to a cell-surface receptor, L represents a bifunctional linker, which does not comprise a naturally occurring amino acid and is covalently bonded to A and P in a regiospecific manner, and P represents a monomer, homopolymer or heteropolymer comprising at least one nucleotide or an analogue thereof, which inhibits the intracellular biosynthesis of nucleotides or nucleic acids in a sequence-independent manner, wherein either or both of the covalent bond between A and L and the covalent bond between L and P can be cleaved intracellularly; a composition comprising such a conjugate; and a method of inhibiting abnormal cellular proliferation in a mammal; and a method of inhibiting replication of a virus in a mammal.
    Type: Grant
    Filed: June 14, 2005
    Date of Patent: August 28, 2007
    Assignee: Cell Works Therapeutics, Inc.
    Inventors: Paul O. P. Ts'O, Robert Duff, Scott Deamond
  • Patent number: 6960449
    Abstract: The present invention relates to the identification and characterization of classes and subclasses of circulating cancer cells, including microtumors from body fluid samples using molecular, cytological, and morphological analyses, and methods for staging patients and measuring the efficacy of medical treatments.
    Type: Grant
    Filed: February 10, 2000
    Date of Patent: November 1, 2005
    Assignee: Cell Works Diagnostics, Inc.
    Inventors: Zheng-Pin Wang, Paul O. P. Ts'o
  • Patent number: 6906182
    Abstract: A conjugate of formula A-L-P, in which: A represents a glycosylated/galactosylated peptide that binds to a cell-surface receptor, L represents a bifunctional linker, which does not comprise a naturally occurring amino acid and is covalently bonded to A and P in a regiospecific manner, and P represents a monomer, homopolymer or heteropolymer comprising at least one nucleotide or an analogue thereof, which inhibits the intracellular biosynthesis of nucleotides or nucleic acids in a sequence-independent manner, wherein either or both of the covalent bond between A and L and the covalent bond between L and P can be cleaved intracellularly; a composition comprising such a conjugate; and a method of inhibiting abnormal cellular proliferation in a mammal; and a method of inhibiting replication of a virus in a mammal.
    Type: Grant
    Filed: November 30, 2001
    Date of Patent: June 14, 2005
    Assignees: Cell Works Therapeutics, Inc., Johns Hopkins University
    Inventors: Paul O. P. Ts'o, Robert Duff, Scott Deamond
  • Publication number: 20040171091
    Abstract: The present invention provides materials and methods for predicting the response of a disease state to a therapeutic agent. A targeting moiety specific for a biological marker is labeled with a reporter moiety and used to analyze cells characteristic of the disease state. The output of the reporter moiety, which may be fluorescence intensity, is compared to the output of reference standard analyzed under similar or identical conditions. The use of a reference standard allows biomarker reporting to be normalized. Biomarker values can then be correlated from sample to sample and from laboratory to laboratory based on quantitative calibration on a universal reference standard.
    Type: Application
    Filed: February 27, 2004
    Publication date: September 2, 2004
    Applicant: Cell Work, Inc.
    Inventors: Stephen A. Lesko, Paul O.P. Ts'o
  • Publication number: 20030119077
    Abstract: The present invention provides for enriching rare cells in a fluid comprising the rare cells and non-rare cells. Examples of rare cells enriched include prostate cancer cells.
    Type: Application
    Filed: October 25, 2002
    Publication date: June 26, 2003
    Applicant: John Hopkins University School of Medicine
    Inventors: Paul O. P. Ts'o, Zheng-Pin Wang, Stephen A. Lesko, William G. Nelson, Alan W. Partin
  • Publication number: 20030119724
    Abstract: The present invention relates to the design and synthesis of homogeneous A-L-P constructs, which contain a hepatic ligand to direct an oligomer or “payload” to a hepatocyte intracellularly via a receptor-mediated, ligand-directed pathway.
    Type: Application
    Filed: June 22, 2001
    Publication date: June 26, 2003
    Inventors: Paul O.P. Ts`o, Robert Duff, Yuanzhong Zhou, Scott Deamond, Clinton Roby
  • Publication number: 20030032584
    Abstract: A conjugate of formula A-L-P, in which:
    Type: Application
    Filed: November 30, 2001
    Publication date: February 13, 2003
    Applicant: Cell Works Inc.
    Inventors: Paul O.P. Ts'o, Robert Duff, Scott Deamond
  • Publication number: 20020098535
    Abstract: The present invention relates to the identification and characterization of classes and subclasses of circulating cancer cells, including microtumors from body fluid samples using molecular, cytological, and morphological analyses, and methods for staging patients and measuring the efficacy of medical treatments.
    Type: Application
    Filed: February 10, 2000
    Publication date: July 25, 2002
    Inventors: Zheng-Pin Wang, Paul O.P. TS'O
  • Patent number: 6080726
    Abstract: A method of treating HSV-2 infection which comprises administering to a host subject to said infection an effective amount of a polynucleotide of the formula polyrI.polyr(C.sub.12 U) where n is an integer from 4 to 29. The polynucleotide is advantageously administered intranasally.
    Type: Grant
    Filed: September 11, 1992
    Date of Patent: June 27, 2000
    Assignees: University of Maryland, Johns Hopkins University
    Inventors: Paul O. P. Ts'o, Laure Aurelian
  • Patent number: 6005094
    Abstract: Acid resistant Oligomers suitable for oral administration, orally acceptable formulations of such Oligomers and preparation of pharmaceutical formations of such Oligomers are provided.
    Type: Grant
    Filed: December 27, 1994
    Date of Patent: December 21, 1999
    Assignees: Genta Incorporated, The Johns Hopkins University
    Inventors: Lionel N. Simon, Paul S. Miller, Paul O. P. Ts'o
  • Patent number: 5994517
    Abstract: Oligodeoxynucleoside methylphosphonate neoglycopeptide conjugates and related compounds for tissue specific delivery of biologically stable, nonionic oligodeoxynucleoside analogs into cells.
    Type: Grant
    Filed: November 22, 1996
    Date of Patent: November 30, 1999
    Assignee: Paul O. P. Ts'o
    Inventors: Paul O. P. Ts'o, Jon J. Hangeland, Yuan C. Lee
  • Patent number: 5962237
    Abstract: A method for enriching cancer cells such as prostate cancer cells in a bodily fluid sample is disclosed comprising (a) obtaining the sample comprising cancer cells and non-rare cells; (b) subjecting the sample to multiple density gradient separation comprising a first density gradient and a second density gradient, wherein the second density gradient is greater than the first density gradient, and producing a first fluid comprising an increased concentration of cancer cells of a first density, and a second fluid comprising an increased concentration of cancer cells of a second density, wherein the second density is greater than the first density; wherein subjecting the sample to multiple density gradient separation includes producing a plasma layer, a first interface layer, a first gradient layer, a second interface layer, a second gradient layer, and a cell pellet; wherein producing the first fluid includes combining the first interface layer and the first gradient layer and forming a first suspension; and w
    Type: Grant
    Filed: April 2, 1997
    Date of Patent: October 5, 1999
    Assignee: The Johns Hopkins University School of Medicine
    Inventors: Paul O. P. Ts'o, Zheng-Pin Wang, Stephen A. Lesko, William G. Nelson, Alan W. Partin
  • Patent number: 5912339
    Abstract: A composition for inactivating a target nucleic acid which comprises an oligonucleoside alkyl or arylphosphonate analogue which is complementary to the sequence of the target nucleic acid and includes a functional group which reacts with the target nucleic acid to render the target nucleic acid inactive or nonfunctional.
    Type: Grant
    Filed: November 16, 1994
    Date of Patent: June 15, 1999
    Assignee: The Johns Hopkins University
    Inventors: Paul S. Miller, Paul O.P. Ts'o
  • Patent number: 4757055
    Abstract: A process for selectively controlling or interfering with the effect or function of foreign nucleic acid in the presence of otherwise normal living cells which comprises determining the base sequence for said nucleic acid and binding the said nucleic acid with an appropriately prepared nonionic oligonucleoside alkyl or arylphosphonate analogue which is complementary to the indicated sequence of the foreign nucleic acid.
    Type: Grant
    Filed: April 27, 1984
    Date of Patent: July 12, 1988
    Assignee: The Johns Hopkins University
    Inventors: Paul S. Miller, Paul O. P. Ts'O
  • Patent number: 4587044
    Abstract: A nucleic acid-protein conjugate which is specific with respect to a selected living cell is prepared by linking said nucleic acid to a protein specific to said living cell.
    Type: Grant
    Filed: September 1, 1983
    Date of Patent: May 6, 1986
    Assignee: The Johns Hopkins University
    Inventors: Paul S. Miller, Paul O. P. Ts'O
  • Patent number: 4511713
    Abstract: A process for selectively controlling or interfering with the effect or function of foreign nucleic acid in the presence of otherwise normal living cells which comprises determining the base sequence for the nucleic acid and binding the nucleic acid with an appropriately prepared nonionic oligonucleoside alkyl or arylphosphonate analogue which is complementary to the indicated sequence of the foreign nucleic acid.
    Type: Grant
    Filed: March 29, 1982
    Date of Patent: April 16, 1985
    Assignee: The Johns Hopkins University
    Inventors: Paul S. Miller, Paul O. P. Ts'O
  • Patent number: 4507433
    Abstract: Process for synthesizing deoxyribonucleoside methylphosphonates on polystyrene polymer supports which involves condensing 5'-dimethoxytrityldeoxynucleoside 3'-methylphosphonates. The oligomers are removed from the support and the base protecting groups hydrolyzed by treatment with ethylenediamene in ethanol, which avoids hydrolysis of the methylphosphonate linkages. Two types of oligomers are synthesized: those containing only methylphosphonate linkages, d-Np(Np).sub.n N, and those which terminate with a 5' nucleotide residue, dNp(Np).sub.n N. The latter oligomers can be phosphorylated by polynucleotide kinase, and are separated by polyacrylamide gel electrophoresis according to their chain length. Piperidine randomly cleaves the oligomer methylphosphonate linkages and generates a series of shorter oligomers whose number corresponds to the length of the original oligomer. Apurinic sites introduced by acid treatment spontaneously hydrolyze to give oligomers which terminate with free 3' and 5'-OH groups.
    Type: Grant
    Filed: October 7, 1983
    Date of Patent: March 26, 1985
    Assignee: The Johns Hopkins University
    Inventors: Paul S. Miller, Paul O. P. Ts'O
  • Patent number: 4469863
    Abstract: Oligonucleoside alkyl-- or aryl phosphonates are nonionic analogues of nucleic acid which possess unique physical and biological properties. These properties enable the analogues to enter living cells intact and to bind with specifically selected nucleic acids within the cell. As a result, the analogues can specifically inhibit the function or expression of a preselected nucleic acid sequence. Thus the analogues could be used to specifically inhibit the growth of tumor cells or replication of viruses in infected cells.
    Type: Grant
    Filed: November 12, 1980
    Date of Patent: September 4, 1984
    Inventors: Paul O. P. Ts'o, Paul S. Miller