Patents by Inventor Hancheng Cai

Hancheng Cai 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).

  • Patent number: 10646598
    Abstract: Disclosed is a class of versatile Sarcophagine based bifunctional chelators (BFCs) containing a hexa-aza cage for labeling with metals having either imaging, therapeutic or contrast applications radiolabeling and one or more linkers (A) and (B). The compounds have the general formula where A is a functional group selected from group consisting of an amine, a carboxylic acid, an ester, a carbonyl, a thiol, an azide and an alkene, and B is a functional group selected from the group consisting of hydrogen, an amine, a carboxylic acid, and ester, a carbonyl, a thiol, an azide and an alkene. Also disclosed are conjugate of the BFC and a targeting moiety, which may be a peptide or antibody. Also disclosed are metal complexes of the BFC/targeting moiety conjugates that are useful as radiopharmaceuticals, imaging agents or contrast agents.
    Type: Grant
    Filed: June 27, 2016
    Date of Patent: May 12, 2020
    Assignee: University of Southern California
    Inventors: Peter S. Conti, Hancheng Cai, Zibo Li, Shuanglong Liu
  • Publication number: 20170189567
    Abstract: Disclosed is a class of versatile Sarcophagine based bifunctional chelators (BFCs) containing a hexa-aza cage for labeling with metals having either imaging, therapeutic or contrast applications radiolabeling and one or more linkers (A) and (B). The compounds have the general formula where A is a functional group selected from group consisting of an amine, a carboxylic acid, an ester, a carbonyl, a thiol, an azide and an alkene, and B is a functional group selected from the group consisting of hydrogen, an amine, a carboxylic acid, and ester, a carbonyl, a thiol, an azide and an alkene. Also disclosed are conjugate of the BFC and a targeting moiety, which may be a peptide or antibody. Also disclosed are metal complexes of the BFC/targeting moiety conjugates that are useful as radiopharmaceuticals, imaging agents or contrast agents.
    Type: Application
    Filed: June 27, 2016
    Publication date: July 6, 2017
    Applicant: UNIVERSITY OF SOUTHERN CALIFORNIA
    Inventors: Peter S. Conti, Hancheng Cai, Zibo Li, Shuanglong Liu
  • Patent number: 9403875
    Abstract: Disclosed is a class of versatile Sarcophagine based bifunctional chelators (BFCs) containing a hexa-aza cage for labeling with metals having either imaging, therapeutic or contrast applications radiolabeling and one or more linkers (A) and (B). The compounds have the general formula where A is a functional group selected from group consisting of an amine, a carboxylic acid, an ester, a carbonyl, a thiol, an azide and an alkene, and B is a functional group selected from the group consisting of hydrogen, an amine, a carboxylic acid, and ester, a carbonyl, a thiol, an azide and an alkene. Also disclosed are conjugate of the BFC and a targeting moiety, which may be a peptide or antibody. Also disclosed are metal complexes of the BFC/targeting moiety conjugates that are useful as radiopharmaceuticals, imaging agents or contrast agents.
    Type: Grant
    Filed: January 27, 2010
    Date of Patent: August 2, 2016
    Assignee: UNIVERSITY OF SOUTHERN CALIFORNIA
    Inventors: Peter S. Conti, Hancheng Cai, Zibo Li, Shuanglong Liu
  • Patent number: 8912319
    Abstract: The present invention relates to methods of synthesizing 18F-FMAU. In particular, 18F-FMAU is synthesized using one-pot reaction conditions in the presence of Friedel-Crafts catalysts. The one-pot reaction conditions are incorporated into a fully automated cGMP-compliant radiosynthesis module, which results in a reduction in synthesis time and simplifies reaction conditions. The one-pot reaction conditions are also suitable for the production of 5-substituted thymidine or cytidine analogs. The products from the one-pot reaction (e.g. the labeled thymidine or cytidine analogs) can be used as probes for imaging tumor proliferative activity. More specifically, these [18F]-labeled thymidine or cytidine analogs can be used as a PET tracer for certain medical conditions, including, but not limited to, cancer disease, autoimmunity inflammation, and bone marrow transplant.
    Type: Grant
    Filed: July 15, 2011
    Date of Patent: December 16, 2014
    Assignee: University of Southern California
    Inventors: Zibo Li, Hancheng Cai, Peter S. Conti
  • Publication number: 20120053337
    Abstract: The present invention relates to methods of synthesizing 18F-FMAU. In particular, 18F-FMAU is synthesized using one-pot reaction conditions in the presence of Friedel-Crafts catalysts. The one-pot reaction conditions are incorporated into a fully automated cGMP-compliant radiosynthesis module, which results in a reduction in synthesis time and simplifies reaction conditions. The one-pot reaction conditions are also suitable for the production of 5-substitued thymidine or cytidine analogues. The products from the one-pot reaction (e.g. the labeled thymidine or cytidine analogues) can be used as probes for imaging tumor proliferative activity. More specifically, these [18F]-labeled thymidine or cytidine analogues can be used as a PET tracer for certain medical conditions, including, but not limited to, cancer disease, autoimmunity inflammation, and bone marrow transplant.
    Type: Application
    Filed: July 15, 2011
    Publication date: March 1, 2012
    Applicant: UNIVERSITY OF SOUTHERN CALIFORNIA
    Inventors: Zibo Li, Hancheng Cai, Peter S. Conti
  • Publication number: 20100196271
    Abstract: Disclosed is a class of versatile Sarcophagine based bifunctional chelators (BFCs) containing a hexa-aza cage for labeling with metals having either imaging, therapeutic or contrast applications radiolabeling and one or more linkers (A) and (B). The compounds have the general formula where A is a functional group selected from group consisting of an amine, a carboxylic acid, an ester, a carbonyl, a thiol, an azide and an alkene, and B is a functional group selected from the group consisting of hydrogen, an amine, a carboxylic acid, and ester, a carbonyl, a thiol, an azide and an alkene. Also disclosed are conjugate of the BFC and a targeting moiety, which may be a peptide or antibody. Also disclosed are metal complexes of the BFC/targeting moiety conjugates that are useful as radiopharmaceuticals, imaging agents or contrast agents.
    Type: Application
    Filed: January 27, 2010
    Publication date: August 5, 2010
    Applicant: UNIVERSITY OF SOUTHERN CALIFORNIA
    Inventors: Peter S. Conti, Hancheng Cai, Zibo Li