Patents by Inventor Guodong Chang

Guodong Chang 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: 20240079842
    Abstract: An optical amplifier includes a pump light source, a coupler, a gain medium, and a gain flattening filter. A gain curve of the optical amplifier is symmetric relative to a target gain curve. Distortion states of any two symmetric gain curves are opposite. The pump light source is configured to provide pump light. The coupler is configured to couple the pump light to the gain medium. The gain medium is configured to amplify, based on the pump light, signal light input to the optical amplifier. The gain flattening filter is configured to filter the amplified signal light, and output the filtered signal light.
    Type: Application
    Filed: November 6, 2023
    Publication date: March 7, 2024
    Inventors: Hangting Hu, Zhiwen Chang, Guodong You
  • Publication number: 20230390364
    Abstract: Provided is the use of human serum albumin in the manufacturing of a drug for treating diabetes, obesity, atherosclerosis, Alzheimer's disease, Parkinson's disease and other diseases. In a preferred embodiment, the human serum albumin is the recombinantly prepared young and uninjured human serum albumin, and has achieved excellent effects in reducing the blood sugar level of a diabetic patient.
    Type: Application
    Filed: November 1, 2021
    Publication date: December 7, 2023
    Applicant: Shenzhen Protgen Ltd.
    Inventors: Yongzhang Luo, Yan Fu, Hongyi Liu, Anji Ju, Jiaze Tang, Yi Jiang, Boyuan Ma, Xiaoqin Jiang, Yu Feng, Guodong Chang, Hui Li
  • Publication number: 20230265166
    Abstract: Provided is a method of extending lifespan and/or anti-aging in a subject, comprising the step of administering to the subject an effective amount of a preparation of young and undamaged human serum albumin (HSA), wherein the preparation exhibits at least one, preferably all, of the following properties: (1) higher ratio of free thiol in Cys-34 residue, (2) lower level of advanced glycation end-product (AGE), (3) lower level of carbonylation, and (4) lower level of homocysteinylation, as compared to an endogenous HSA preparation obtained from said subject.
    Type: Application
    Filed: August 11, 2021
    Publication date: August 24, 2023
    Inventors: Yongzhang Luo, Yan FU, Jiaze TANG, Anji JU, Boya LI, Yuanchao GONG, Shaosen ZHANG, Guodong CHANG, Hui LI
  • Patent number: 11098104
    Abstract: The present invention provides a polyethylene glycol-modified endostatin analogue and an application thereof. The endostatin analogue is coupled to polyethylene glycol at lysine away from a nucleolin binding domain, or is coupled to polyethylene glycol at lysine away from a nucleolin binding domain and amidogen at the N end.
    Type: Grant
    Filed: November 10, 2017
    Date of Patent: August 24, 2021
    Assignee: BEIJING PROTGEN LTD.
    Inventors: Daifu Zhou, Wenchao Wang, Hui Li, Guodong Chang
  • Publication number: 20200270333
    Abstract: The present invention provides a polyethylene glycol-modified endostatin analogue and an application thereof. The endostatin analogue is coupled to polyethylene glycol at lysine away from a nucleolin binding domain, or is coupled to polyethylene glycol at lysine away from a nucleolin binding domain and amidogen at the N end.
    Type: Application
    Filed: November 10, 2017
    Publication date: August 27, 2020
    Applicant: BEIJING PROTGEN LTD.
    Inventors: Daifu Zhou, Wenchao Wang, Hui Li, Guodong Chang
  • Publication number: 20200237796
    Abstract: A method for treating a tumor or cancer by means of a treatment scheme of using endostatin in combination with induction of DNA double-strand breaks, and a medication. The method and composition are used for treating a tumor or cancer related to loss of p53 function, or a tumor or cancer occurring when p53 function is normal.
    Type: Application
    Filed: July 27, 2018
    Publication date: July 30, 2020
    Inventors: Yongzhang LUO, Lin JIA, Guodong CHANG
  • Patent number: 10647968
    Abstract: The present invention discloses a new anti-tumor medicament comprising a mutant of endostatin. The mutant comprises a mutation in the ATP-binding site of endostatin and has a decreased ATPase activity and an increased anti-angiogenesis activity.
    Type: Grant
    Filed: September 10, 2012
    Date of Patent: May 12, 2020
    Assignees: Tsinghua University, Beijing Protgen Ltd.
    Inventors: Yongzhang Luo, Peng Liu, Xinan Lu, Yang Chen, Yan Fu, Guodong Chang, Daifu Zhou
  • Publication number: 20190330707
    Abstract: Provided is a method for the high expression of a recombinant human serum albumin, characterized in comprising the step of co-expressing: (a) a human serum albumin gene, and (b) one or more rHSA expression promoting factor genes in a yeast host cell.
    Type: Application
    Filed: May 4, 2017
    Publication date: October 31, 2019
    Applicant: Shenzhen Protgen Ltd.
    Inventors: Guodong Chang, Xin Dou, Xiaobo Xiong, Wenchao Wang
  • Publication number: 20180360922
    Abstract: The present invention discloses an anti-tumor conjugate and pharmaceutical composition or kits comprising the conjugate, as well as a method of producing the anti-tumor conjugate. The anti-tumor conjugate of the present invention is metabolically stable in vivo, and is ultimately available for the treatment of tumors and production of anti-tumor medicaments.
    Type: Application
    Filed: July 2, 2018
    Publication date: December 20, 2018
    Applicants: TSINGHUA UNIVERSITY, PROTGEN LTD.
    Inventors: Yongzhang LUO, Qing HAN, Qingxin LEI, Guodong CHANG, Yan FU
  • Patent number: 10054590
    Abstract: The present invention relates to a method of identifying cancer subjects, in particular human patients, who are suitable for anti-lymphangiogenesis therapy to prevent tumor growth and tumor metastasis. The present invention also relates to a new approach, which uses nucleolin as a bait to search and screen for lymphangiogenesis inhibitors or cancer suppressors, which function in a manner that is analogous to endostatin. The invention is based upon the discovery that nucleolin is specifically expressed on lymphangiogenic vessels and functions as a specific receptor for endostatin, and thus is involved in the signal transduction pathway of endostatin as an anti-lymphangiogenesis inhibitor. The present invention also discloses that cell surface nucleolin on lymphatic endothelial cells is a biomarker for lymphangiogenic vessels, which could be used for the prediction of tumor metastasis.
    Type: Grant
    Filed: August 8, 2013
    Date of Patent: August 21, 2018
    Assignees: Tsinghua University, Protgen Ltd.
    Inventors: Yongzhang Luo, Wei Zhuo, Yan Fu, Guodong Chang
  • Publication number: 20180094051
    Abstract: The present invention provides a method for inhibiting lymphangiogenesis in a subject, comprising administering a therapeutically effective amount of a CXCR4 inhibitor and/or a CXCL12 inhibitor to the subject. The invention further provides a method for inhibiting tumor lymphatic metastasis in a cancer patient, comprising administering to the subject (a) a therapeutically effective amount of a CXCR4 inhibitor and/or a CXCL12 inhibitor, in combination with (b) a therapeutically effective amount of a VEGF-C inhibitor and/or a VEGF-D inhibitor and/or a VEGFR-3 inhibitor.
    Type: Application
    Filed: December 14, 2017
    Publication date: April 5, 2018
    Inventors: Yongzhang LUO, Wei ZHUO, Lin JIA, Yan FU, Guodong CHANG
  • Patent number: 9815906
    Abstract: The present invention relates to the diagnosis and treatment of cancer, and specifically to a method of diagnosing the presence, status or metastasis of cancer by detecting plasma Hsp90? having the amino acid sequence of SEQ ID NO:1 as a tumor marker. In addition, the present invention also relates to a method for the treatment of cancer and metastasis.
    Type: Grant
    Filed: February 13, 2015
    Date of Patent: November 14, 2017
    Assignees: TSINGHUA UNIVERSITY, PROTGEN LTD.
    Inventors: Yongzhang Luo, Xiaomin Song, Xiaofeng Wang, Wei Zhuo, Guodong Chang, Yan Fu
  • Publication number: 20160178633
    Abstract: A method of determining whether a subject has cancer or has a risk of getting cancer comprises: detecting the concentration of Hsp90a in a blood sample of the subject; and if the concentration reaches or exceeds a preset threshold value, determining that the subject has cancer or has a risk of getting cancer, where the threshold value is selected from a range from 50 ng/ml to 120 ng/ml; for example, the threshold value may be 50, 53, 56, 62, 63, 64, 67, 72, 82, 85 or 117 ng/ml, and a numerical value within the ±15% range of the threshold value is regarded having equivalent significance for determination.
    Type: Application
    Filed: June 27, 2014
    Publication date: June 23, 2016
    Applicants: TSINGHUA UNIVERSITY, YANTAI PROTGEN BIOTECHNOLOGY DEVELOPMENT CO., LTD., BEIJING PROTGEN LTD.
    Inventors: Yongzhang Luo, Dawei Cui, Yan Fu, Fei Wu, Xiaomin Song, Michuan Li, Guodong Chang, Chuntao Lu
  • Patent number: 9364493
    Abstract: The present invention relates to a new use of a known medicament. Specifically, the invention relates to methods and compositions for enhancing the therapeutic efficacy of a therapeutic agent by increasing the uptake of the therapeutic agent by target cells, and in particular relates to a pharmaceutical composition comprising a regulating agent of lipid raft/caveolae-dependent endocytic pathway and some therapeutic agents, such as anti-tumor agents. The invention also relates to a method for screening a regulating agent of lipid raft/caveolae-dependent endocytic pathway capable of enhancing the therapeutic efficacy of anti-tumor agents.
    Type: Grant
    Filed: March 28, 2012
    Date of Patent: June 14, 2016
    Assignees: Tsinghua University, Beijing Protgen LTD.
    Inventors: Yongzhang Luo, Yang Chen, Yan Fu, Lin Jia, Guodong Chang
  • Publication number: 20150259432
    Abstract: The present invention relates to the diagnosis and treatment of cancer, and specifically to a method of diagnosing the presence, status or metastasis of cancer by detecting plasma Hsp90? having the amino acid sequence of SEQ ID NO:1 as a tumor marker. In addition, the present invention also relates to a method for the treatment of cancer and metastasis.
    Type: Application
    Filed: February 13, 2015
    Publication date: September 17, 2015
    Applicants: TSINGHUA UNIVERSITY, PROTGEN LTD.
    Inventors: Yongzhang LUO, Xiaomin SONG, Xiaofeng WANG, Wei ZHUO, Guodong CHANG, Yan FU
  • Publication number: 20150197733
    Abstract: The present invention discloses a new anti-tumor medicament comprising a mutant of endostatin. The mutant comprises a mutation in the ATP-binding site of endostatin and has a decreased ATPase activity and an increased anti-angiogenesis activity.
    Type: Application
    Filed: September 10, 2012
    Publication date: July 16, 2015
    Applicants: BEIJING PROTGEN LTD., TSINGHUA UNIVERSITY
    Inventors: Yongzhang Luo, Peng Liu, Xinan Lu, Yang Chen, Yan Fu, Guodong Chang, Daifu Zhou
  • Patent number: 8975030
    Abstract: The present invention relates to the diagnosis and treatment of cancer, and specifically to a method of diagnosing the presence, status or metastasis of cancer by detecting plasma Hsp90? having the amino acid sequence of SEQ ID NO:1 as a tumor marker. In addition, the present invention also relates to a method for the treatment of cancer and metastasis.
    Type: Grant
    Filed: March 4, 2013
    Date of Patent: March 10, 2015
    Assignees: Tsinghua University, Protgen Ltd.
    Inventors: Yongzhang Luo, Xiaomin Song, Xiaofeng Wang, Wei Zhuo, Guodong Chang, Yan Fu
  • Publication number: 20140335152
    Abstract: The present invention relates to a new use of a known medicament. Specifically, the invention relates to methods and compositions for enhancing the therapeutic efficacy of a therapeutic agent by increasing the uptake of the therapeutic agent by target cells, and in particular relates to a pharmaceutical composition comprising a regulating agent of lipid raft/caveolae-dependent endocytic pathway and some therapeutic agents, such as anti-tumor agents. The invention also relates to a method for screening a regulating agent of lipid raft/caveolae-dependent endocytic pathway capable of enhancing the therapeutic efficacy of anti-tumor agents.
    Type: Application
    Filed: March 28, 2012
    Publication date: November 13, 2014
    Applicants: TSINGHUA UNIVERSITY, BEIJING PROTGEN LTD.
    Inventors: Yongzhang LUO, Yang CHEN, Yan FU, Lin JIA, Guodong CHANG
  • Publication number: 20140308263
    Abstract: The present invention discloses a new anti-tumor medicament comprising a mutant of endostatin. The mutant comprises a mutation in the ATP-binding site of endostatin and has a decreased ATPase activity and an increased anti-angiogenesis activity.
    Type: Application
    Filed: September 10, 2012
    Publication date: October 16, 2014
    Applicants: BEIJING PROTGEN LTD., TSINGHUA UNIVERSITY
    Inventors: Yongzhang Luo, Peng Liu, Xinan Lu, Yang Chen, Yan Fu, Guodong Chang, Daifu Zhou
  • Publication number: 20140193424
    Abstract: The present invention provides a method for inhibiting lymphangiogenesis in a subject, comprising administering a therapeutically effective amount of a CXCR4 inhibitor and/or a CXCL12 inhibitor to the subject. The invention further provides a method for inhibiting tumor lymphatic metastasis in a cancer patient, comprising administering to the subject (a) a therapeutically effective amount of a CXCR4 inhibitor and/or a CXCL12 inhibitor, in combination with (b) a therapeutically effective amount of a VEGF-C inhibitor and/or a VEGF-D inhibitor and/or a VEGFR-3 inhibitor.
    Type: Application
    Filed: August 8, 2013
    Publication date: July 10, 2014
    Inventors: Yongzhang LUO, Wei ZHUO, Lin JIA, Yan FU, Guodong CHANG