Patents by Inventor Dexian Zheng

Dexian Zheng 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: 20200407457
    Abstract: Provided is a broad-spectrum, efficient and anti-tumor anti-TRAILR2 antibody-toxin-conjugate (ADC, named Zapadcine-1(a, b, c, d) and Zapadcine-3(a, b, c, d, e)). Toxin with cytotoxic effect is linked to an anti-TRAILR2 humanized monoclonal antibody by means of a covalent bond by using disulfide bond bridging or conventional coupling technology and chemical linkers, so as to form an anti-TRAILR2 humanized antibody-toxin-conjugate. The ADC has the specificity of TRAILR2 positive tumors, and after conjugated to TRAILR2, the positive tumors can be endocytosed into lysosomes of tumor cells, and is degraded by means of proteases inside the lysosomes to release free micromolecule urotoxins, so that different TRAILR2 positive tumor cells are killed specifically, the tumor growth is suppressed, the tumor cells are even completely eliminated, and the tumor is cured.
    Type: Application
    Filed: January 31, 2019
    Publication date: December 31, 2020
    Inventors: Dexian ZHENG, Shuyong ZHANG, Oudong PAN, Chao ZHENG, Wan ZHU, Qingmei XIA
  • Patent number: 9725517
    Abstract: The present invention provides a humanized monoclonal antibody against extracellular domain of human death receptor 5, comprising a light chain variable region, whose amino acid sequence has at least 90% identity with the amino acid sequence shown as SEQ ID NO: 1, a heavy chain variable region, whose amino acid sequence has at least 90% identity with the amino acid sequence shown as SEQ ID NO: 2, and constant region derived from human antibody. The present invention also provides nucleotide sequence encoding said humanized monoclonal antibody, a recombinant eukaryotic expression vector, a process for preparing the humanized monoclonal antibody, and the composition and use therefore.
    Type: Grant
    Filed: October 26, 2012
    Date of Patent: August 8, 2017
    Assignee: Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences
    Inventors: Dexian Zheng, Yuhe Qiu, Yanxin Liu
  • Publication number: 20150353638
    Abstract: The present invention provides a humanized monoclonal antibody against extracellular domain of human death receptor 5, comprising a light chain variable region, whose amino acid sequence has at least 90% identity with the amino acid sequence shown as SEQ ID NO: 1, a heavy chain variable region, whose amino acid sequence has at least 90% identity with the amino acid sequence shown as SEQ ID NO: 2, and constant region derived from human antibody. The present invention also provides nucleotide sequence encoding said humanized monoclonal antibody, a recombinant eukaryotic expression vector, a process for preparing the humanized monoclonal antibody, and the composition and use therefore.
    Type: Application
    Filed: October 26, 2012
    Publication date: December 10, 2015
    Inventors: Dexian Zheng, Yuhe Qiu, Yanxin Liu
  • Patent number: 8790663
    Abstract: Provided are antigenic determinants of human death receptor DR5. The antigenic determinants have the amino acid sequence of LITQQDLAPQQRA (SEQ ID No. 7), wherein the core polypeptide is QDLAP (SEQ ID No. 1). The polypeptides comprising said antigenic determinants can activate the signal pathway downstream of DR5 after binding to monoclonal antibody AD5-10, then result in apoptosis. The antigenic determinants can be used for screening and preparing anti-human DR5 agonistic antibody, small molecular compound binding to DR5 and DR5 vaccine.
    Type: Grant
    Filed: April 3, 2009
    Date of Patent: July 29, 2014
    Assignee: Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences
    Inventors: Yanxin Liu, Peng Zhang, Yong Zheng, Dexian Zheng
  • Publication number: 20120271034
    Abstract: Provided are antigenic determinants recognized by anti-human death receptor DR5 monoclonal antibody AD5-10, derivatives and uses thereof. The antigenic determinants have the amino acid sequence of LITQQDLAPAARA, wherein the core polypeptide is QDLAP. The polypeptides comprising said antigenic determinants can activate the signal pathway downstream of DR5 after binding to monoclonal antibody AD5-10, then result in apoptosis. The antigenic determinants and derivatives thereof can be used for screening and preparing anti-human DR5 agonistic antibody, small molecular compound binding to DR5 and DR5 vaccine. Their nucleotide encoding sequences can be used for preparing antisense nucleotides and small molecular ribonucleotides for treating and preventing tumor and/or AIDS and the like.
    Type: Application
    Filed: April 3, 2009
    Publication date: October 25, 2012
    Applicant: INSTITUTE OF BASIC MEDICAL SCIENCES, CHINESE ACADE MY OF MEDICAL SCIENCES
    Inventors: Yanxin Liu, Peng Zhang, Yong Zheng, Dexian Zheng
  • Patent number: 7893216
    Abstract: The present invention discloses a monoclonal antibody against the extracellular domain of human tumor necrosis factor-related apoptosis-inducing ligand receptor DR5 (death receptor 5). The present invention also provides a method of producing the monoclonal antibody, amino acid sequences of the variable regions of the monoclonal antibody's heavy chain and light chain, as well as use of the monoclonal antibody for preparation of a medicament in the treatment of various cancers and/or AIDS.
    Type: Grant
    Filed: March 7, 2005
    Date of Patent: February 22, 2011
    Assignee: The Institute of Basic Medical Sciences of Chinese Academy of Medical Sciences
    Inventors: Yanxin Liu, Yabin Guo, Dexian Zheng
  • Publication number: 20100080806
    Abstract: The present invention discloses a monoclonal antibody against the extracellular domain of human tumor necrosis factor-related apoptosis-inducing ligand receptor DR5 (death receptor 5), The present invention also provides a method of producing the monoclonal antibody, amino acid sequences of the variable regions of the monoclonal antibody's heavy chain and light chain, as well as use of the monoclonal antibody for preparation of a medicament in the treatment of various cancers and/or AIDS.
    Type: Application
    Filed: July 3, 2005
    Publication date: April 1, 2010
    Inventors: Yanxin Liu, Yabin Guo, Dexian Zheng
  • Publication number: 20060153809
    Abstract: This invention provides a composition comprising a recombinant adeno-associated virus 2/5 (rAAV2/5) which encodes consecutive amino acids 114-281 of the amino acid sequence of the extracellular domain of tumor necrosis factor-related apoptosis-inducing ligand (TRAIL). This invention also provides a pharmaceutical composition comprising such composition and a pharmaceutically acceptable carrier. This invention provides a method for treating lung cancer in a subject. The invention further provides a kit comprising a pharmaceutical composition comprising a composition comprising a recombinant adeno-associated virus 2/5 (rAAV2/5) which encodes consecutive amino acids 114-281 of the amino acid sequence of the extracellular domain of tumor necrosis factor-related apoptosis-inducing ligand (TRAIL) and a pharmaceutically acceptable carrier, and instructions for use.
    Type: Application
    Filed: January 12, 2006
    Publication date: July 13, 2006
    Inventors: Ruian Xu, Dexian Zheng, Juan Shi, Yanxin Liu