Patents by Inventor Chien-Tsun Kuan

Chien-Tsun Kuan 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: 20160272730
    Abstract: High affinity antibodies were made to gangliosides expressed on tumor cells. The antibodies can be used analytically, diagnostically, therapeutically, and theranostically. The antibodies may be used to target cytotoxic reagents to tumor cells, thus minimizing full-body toxicity. The antibodies may also be used with out added cytotoxin. The antibodies may be detectably labeled or labelable for analytic and diagnostic purposes. The combination of specificity and affinity of the antibodies render them particularly useful.
    Type: Application
    Filed: June 2, 2016
    Publication date: September 22, 2016
    Applicants: Duke University, THE GOVERNMENT OF THE UNITED STATES AS REPRESENTED BY THE SECRETARY OF HEALTH
    Inventors: Darell Bigner, Chien-Tsun Kuan, Ira H. Pastan, Hailan Piao
  • Patent number: 9441048
    Abstract: High affinity antibodies were made to gangliosides expressed on tumor cells. The antibodies can be used analytically, diagnostically, therapeutically, and theranostically. The antibodies may be used to target cytotoxic reagents to tumor cells, thus minimizing full-body toxicity. The antibodies may also be used with out added cytotoxin. The antibodies may be detectably labeled or labelable for analytic and diagnostic purposes. The combination of specificity and affinity of the antibodies render them particularly useful.
    Type: Grant
    Filed: November 15, 2011
    Date of Patent: September 13, 2016
    Assignees: The United States of America as represented by the Secretary of Health and Human Services, Duke University
    Inventors: Darell Bigner, Chien-Tsun Kuan, Ira H. Pastan, Hailan Piao
  • Publication number: 20160168263
    Abstract: We have constructed a polynucleotide encoding a bispecific antibody engaging molecule which has one arm that specifically engages a tumor cell which expresses the human EGFRvIII mutant protein on its surface, and a second arm that specifically engages T cell activation ligand CD3. The polynucleotide is codon optimized for expression in CHO cells. The subunits of the engaging molecules are organized to achieve greater efficiency. These are promising therapeutic agents.
    Type: Application
    Filed: July 9, 2014
    Publication date: June 16, 2016
    Applicants: DUKE UNIVERSITY, THE GOVERNMENT OF THE U.S. AS REPRESENTED BY THE SECRETARY OF HEALTH
    Inventors: Darell D. Bigner, John Sampson, Chien-Tsun Kuan, Mingqing Cai, Bryan D. Choi, Patrick C. Gedeon, Ira H. Pastan
  • Patent number: 9353418
    Abstract: We found mutations of the R132 residue of isocitrate dehydrogenase 1 (IDH1) in the majority of grade II and III astrocytomas and oligodendrogliomas as well as in glioblastomas that develop from these lower grade lesions. Those tumors without mutations in IDH1 often had mutations at the analogous R172 residue of the closely related IDH2 gene. These findings have important implications for the pathogenesis and diagnosis of malignant gliomas.
    Type: Grant
    Filed: December 11, 2013
    Date of Patent: May 31, 2016
    Assignees: The Johns Hopkins University, Duke University
    Inventors: Bert Vogelstein, Kenneth W. Kinzler, D. Williams Parsons, Xiaosong Zhang, Jimmy Cheng-Ho Lin, Rebecca J. Leary, Philipp Angenendt, Nickolas Papadopoulos, Victor Velculescu, Giovanni Parmigiani, Rachel Karchin, Sian Jones, Hai Yan, Darell Bigner, Chien-Tsun Kuan, Gregory J. Riggins
  • Patent number: 9249217
    Abstract: We have constructed bispecific antibody engaging molecules which have one arm that specifically engages a tumor cell which expresses the human EGFRvIII mutant protein on its surface, and a second arm that specifically engages T cell activation ligand CD3. The engaging molecules are highly cytotoxic and antigen-specific.
    Type: Grant
    Filed: November 15, 2011
    Date of Patent: February 2, 2016
    Assignees: Secretary, DHHS, Duke University
    Inventors: Darell D. Bigner, Chien-Tsun Kuan, John H. Sampson, Mingqing Cai, Bryan D. Choi, Ira H. Pastan
  • Publication number: 20150368353
    Abstract: Recombinant scFv-immunotoxins target tumor cells expressing human podoplanin but not podoplanin-negative or normal cells. The immunotoxins can be used for treatment of malignant glioma patients or any malignant tumor expressing podoplanin. One such immunotoxin comprises a modified Pseudomonas exotoxin (PE38) attached to the scFv antibody fragment. This immunotoxin can be used as a therapeutic drug for the treatment of malignant gliomas and other cancers.
    Type: Application
    Filed: June 1, 2015
    Publication date: December 24, 2015
    Inventors: Darell BIGNER, Chien-Tsun KUAN, Ira H. PASTAN, Vidyalakshmi CHANDRAMOHAN
  • Patent number: 9115196
    Abstract: The invention provides high affinity antibodies suitable for forming immunotoxins that inhibit the growth of cells expressing human glycoprotein NMB, including glioblastoma multiforme cells, anaplastic astrocytoma cells, anaplastic oligodendroglioma cells, oligodendroglioma cells, and melanoma cells. The antibodies may be formed in cells transformed with an isolated nucleic acid encoding a polypeptide comprising an antibody heavy chain variable region (“VH”) and an antibody light chain variable region (“VL”). Such nucleic acids are provided.
    Type: Grant
    Filed: May 20, 2013
    Date of Patent: August 25, 2015
    Inventors: Chien-Tsun Kuan, Darell D. Bigner, Ira H. Pastan
  • Publication number: 20150132306
    Abstract: We have constructed bispecific antibody engaging molecules which have one arm that specifically engages a tumor cell which expresses the human EGFRvIII mutant protein on its surface, and a second arm that specifically engages T cell activation ligand CD3. The engaging molecules are highly cytotoxic and antigen-specific. These are promising therapeutic agents.
    Type: Application
    Filed: June 7, 2013
    Publication date: May 14, 2015
    Inventors: Darell Bigner, Chien-Tsun Kuan, John Sampson, Bryan Choi, Ira H. Pastan
  • Publication number: 20140322248
    Abstract: We tested the in vitro and in vivo efficacy of a recombinant bispecific immunotoxin that recognizes both EGFRwt and tumor-specific EGFRvIII receptors. A single chain antibody was cloned from a hybridoma and fused to toxin, carrying a C-terminal peptide which increases retention within cells. The binding affinity and specificity of the recombinant bispecific immunotoxin for the EGFRwt and the EGFRvIII proteins was measured. In vitro cytotoxicity was measured. In vivo activity of the recombinant bispecific immunotoxin was evaluated in subcutaneous models and compared to that of an established monospecific immunotoxin. In our preclinical studies, the bispecific recombinant immunotoxin, exhibited significant potential for treating brain tumors.
    Type: Application
    Filed: May 6, 2014
    Publication date: October 30, 2014
    Inventors: Darell BIGNER, Chien-Tsun KUAN, Ira H. PASTAN, Charles PEAGRAM
  • Patent number: 8835608
    Abstract: An antibody having an antigen binding region capable of binding an epitope located in an extracellular portion of MRP3 and methods of utilizing same are provided. In particular, the invention provides antibodies targeted at a MRP3 antigen present on cells expressing MRP3 and methods useful in detecting or targeting cells expression the MRP3 antigen, as well as kits, nucleic acids, polypeptides, and cells for providing the antibodies.
    Type: Grant
    Filed: November 30, 2007
    Date of Patent: September 16, 2014
    Assignee: Duke University
    Inventors: Chien-Tsun Kuan, Darell D Bigner
  • Publication number: 20140187764
    Abstract: We found mutations of the R132 residue of isocitrate dehydrogenase 1 (IDH1) in the majority of grade II and III astrocytomas and oligodendrogliomas as well as in glioblastomas that develop from these lower grade lesions. Those tumors without mutations in IDH1 often had mutations at the analogous R172 residue of the closely related IDH2 gene. These findings have important implications for the pathogenesis and diagnosis of malignant gliomas.
    Type: Application
    Filed: December 11, 2013
    Publication date: July 3, 2014
    Applicants: Duke University, The Johns Hopkins University
    Inventors: Bert VOGELSTEIN, Kenneth W. KINZLER, D. Williams PARSONS, Xiaosong ZHANG, Jimmy Cheng-Ho LIN, Rebecca J. LEARY, Philipp ANGENENDT, Nickolas PAPADOPOULOS, Victor VELCULESCU, Giovanni PARMIGIANI, Rachel KARCHIN, Sian JONES, Hai YAN, Darell BIGNER, Chien-Tsun KUAN, Gregory J. RIGGINS
  • Patent number: 8685660
    Abstract: We found mutations of the R132 residue of isocitrate dehydrogenase 1 (IDH1) in the majority of grade II and III astrocytomas and oligodendrogliomas as well as in glioblastomas that develop from these lower grade lesions. Those tumors without mutations in IDH1 often had mutations at the analogous R172 residue of the closely related IDH2 gene. These findings have important implications for the pathogenesis and diagnosis of malignant gliomas.
    Type: Grant
    Filed: September 3, 2009
    Date of Patent: April 1, 2014
    Assignees: The Johns Hopkins University, Duke University
    Inventors: Bert Vogelstein, Kenneth W. Kinzler, D. Williams Parsons, Xiaosong Zhang, Jimmy Cheng-Ho Lin, Rebecca J. Leary, Philipp Angenendt, Nickolas Papadopoulos, Victor Velculescu, Giovanni Parmigiani, Rachel Karchin, Sian Jones, Hai Yan, Darell Bigner, Chien-Tsun Kuan, Gregory J. Riggins
  • Publication number: 20140017266
    Abstract: Recombinant scFv-immunotoxins target tumor cells expressing human podoplanin but not podoplanin-negative or normal cells. The immunotoxins can be used for treatment of malignant glioma patients or any malignant tumor expressing podoplanin. One such immunotoxin comprises a modified Pseudomonas exotoxin (PE38) attached to the scFv antibody fragment. This immunotoxin can be used as a therapeutic drug for the treatment of malignant gliomas and other cancers.
    Type: Application
    Filed: December 5, 2011
    Publication date: January 16, 2014
    Applicants: THE GOVERNMENT OF THE UNITED STATES, AS REPRESENTED BY THE SECRETARY OF HHS, NIH, DUKE UNIVERSITY
    Inventors: Darell Bigner, Chien-Tsun Kuan, Ira H. Pastan, Vidyalakshmi Chandramohan
  • Publication number: 20140010829
    Abstract: High affinity antibodies were made to gangliosides expressed on tumor cells. The antibodies can be used analytically, diagnostically, therapeutically, and theranostically. The antibodies may be used to target cytotoxic reagents to tumor cells, thus minimizing full-body toxicity. The antibodies may also be used with out added cytotoxin. The antibodies may be detectably labeled or labelable for analytic and diagnostic purposes. The combination of specificity and affinity of the antibodies render them particularly useful.
    Type: Application
    Filed: November 15, 2011
    Publication date: January 9, 2014
    Applicants: The Gov't of the United States, as Represented by, The Secretary of Health and Human Services, DUKE UNIVERSITY
    Inventors: Darell Bigner, Chien-Tsun Kuan, Ira H. Pastan, Hailan Piao
  • Publication number: 20130245244
    Abstract: The invention provides high affinity antibodies suitable for forming immunotoxins that inhibit the growth of cells expressing human glycoprotein NMB, including glioblastoma multiforme cells, anaplastic astrocytoma cells, anaplastic oligodendroglioma cells, oligodendroglioma cells, and melanoma cells. The antibodies may be formed in cells transformed with an isolated nucleic acid encoding a polypeptide comprising an antibody heavy chain variable region (“VH”) and an antibody light chain variable region (“VL”). Such nucleic acids are provided.
    Type: Application
    Filed: May 20, 2013
    Publication date: September 19, 2013
    Applicants: DUKE UNIVERSITY, THE GOVERNMENT OF THE UNITED STATES AS REPRESENTED BY THE SECRETARY OF HEAL
    Inventors: Chien-Tsun KUAN, Darell D. BIGNER, Ira H. PASTAN
  • Patent number: 8445216
    Abstract: The invention provides high affinity antibodies suitable for forming Immunotoxins that inhibit the growth of cells expressing human glycoprotein NMB, including glioblastoma multiform cells, anaplastic astrocytoma cells, anaplastic oligodendroglioma cells, oligodendroglioma cells, and melanoma cells.
    Type: Grant
    Filed: October 18, 2011
    Date of Patent: May 21, 2013
    Assignees: Duke University, The United States of America, as represented by the Secretary of Health and Human Services, National Institutes of Health
    Inventors: Chien-Tsun Kuan, Darell D Bigner, Ira H Pastan
  • Publication number: 20130022598
    Abstract: We tested the in vitro and in vivo efficacy of a recombinant bispecific immunotoxin that recognizes both EGFRwt and tumor-specific EGFRvIII receptors. A single chain antibody was cloned from a hybridoma and fused to toxin, carrying a C-terminal peptide which increases retention within cells. The binding affinity and specificity of the recombinant bispecific immunotoxin for the EGFRwt and the EGFRvIII proteins was measured. In vitro cytotoxicity was measured. In vivo activity of the recombinant bispecific immunotoxin was evaluated in subcutaneous models and compared to that of an established monospecific immunotoxin. In our preclinical studies, the bispecific recombinant immunotoxin, exhibited significant potential for treating brain tumors.
    Type: Application
    Filed: May 29, 2012
    Publication date: January 24, 2013
    Applicants: The United States Government as represented by the Secretary, Department of Health and Human Service, Duke University
    Inventors: Darell Bigner, Chien-Tsun Kuan, Ira H. Pastan, Charles N. Pegram
  • Publication number: 20120202207
    Abstract: We found mutations of the R132 residue of isocitrate dehydrogenase 1 (IDH1) in the majority of grade II and III astrocytomas and oligodendrogliomas as well as in glioblastomas that develop from these lower grade lesions. Those tumors without mutations in IDH1 often had mutations at the analogous R172 residue of the closely related IDH2 gene. These findings have important implications for the pathogenesis and diagnosis of malignant gliomas.
    Type: Application
    Filed: March 6, 2012
    Publication date: August 9, 2012
    Applicants: DUKE UNIVERSITY, THE JOHNS HOPKINS UNIVERSITY
    Inventors: Bert VOGELSTEIN, Kenneth W. KINZLER, D. Williams PARSONS, Xiaosong ZHANG, Jimmy Cheng-Ho LIN, Rebecca J. LEARY, Philipp ANGENENDT, Nickolas PAPADOPOULOS, Victor VELCULESCU, Giovanni PARMIGIANI, Rachel KARCHIN, Sian JONES, Hai YAN, Darell BIGNER, Chien-Tsun KUAN, Gregory J. RIGGINS
  • Publication number: 20120189630
    Abstract: We have constructed bispecific antibody engaging molecules which have one arm that specifically engages a tumor cell which expresses the human EGFRvIII mutant protein on its surface, and a second arm that specifically engages T cell activation ligand CD3. The engaging molecules are highly cytotoxic and antigen-specific. These are promising therapeutic agents.
    Type: Application
    Filed: November 15, 2011
    Publication date: July 26, 2012
    Applicant: DUKE UNIVERSITY
    Inventors: Darell D. BIGNER, Chien-Tsun KUAN, John H. SAMPSON, Mingqing CAI, Bryan D. CHOI
  • Publication number: 20120122121
    Abstract: The invention provides high affinity antibodies suitable for forming Immunotoxins that inhibit the growth of cells expressing human glycoprotein NMB, including glioblastoma multiform cells, anaplastic astrocytoma cells, anaplastic oligodendroglioma cells, oligodendroglioma cells, and melanoma cells.
    Type: Application
    Filed: October 18, 2011
    Publication date: May 17, 2012
    Applicants: Duke University, The Government of The United States as Represented by The Secretary of Health
    Inventors: Chien-Tsun KUAN, Darell D. BIGNER, Ira H. PASTAN