Patents by Inventor Yongzhang Luo
Yongzhang Luo 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).
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Publication number: 20150197733Abstract: 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: ApplicationFiled: September 10, 2012Publication date: July 16, 2015Applicants: BEIJING PROTGEN LTD., TSINGHUA UNIVERSITYInventors: Yongzhang Luo, Peng Liu, Xinan Lu, Yang Chen, Yan Fu, Guodong Chang, Daifu Zhou
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Patent number: 8975030Abstract: 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: GrantFiled: March 4, 2013Date of Patent: March 10, 2015Assignees: Tsinghua University, Protgen Ltd.Inventors: Yongzhang Luo, Xiaomin Song, Xiaofeng Wang, Wei Zhuo, Guodong Chang, Yan Fu
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Publication number: 20140335152Abstract: 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: ApplicationFiled: March 28, 2012Publication date: November 13, 2014Applicants: TSINGHUA UNIVERSITY, BEIJING PROTGEN LTD.Inventors: Yongzhang LUO, Yang CHEN, Yan FU, Lin JIA, Guodong CHANG
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Publication number: 20140308263Abstract: 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: ApplicationFiled: September 10, 2012Publication date: October 16, 2014Applicants: BEIJING PROTGEN LTD., TSINGHUA UNIVERSITYInventors: Yongzhang Luo, Peng Liu, Xinan Lu, Yang Chen, Yan Fu, Guodong Chang, Daifu Zhou
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Publication number: 20140193424Abstract: 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: ApplicationFiled: August 8, 2013Publication date: July 10, 2014Inventors: Yongzhang LUO, Wei ZHUO, Lin JIA, Yan FU, Guodong CHANG
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Publication number: 20140147492Abstract: 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: ApplicationFiled: March 28, 2012Publication date: May 29, 2014Applicant: TSINGHUA UNIVERSITYInventors: Yongzhang Luo, Yang Chen, Yan Fu, Lin Jia, Guodong Chang
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Publication number: 20140087441Abstract: The invention discloses a novel application of fibrinogen-420 and its active domain (alpha EC domain), and a separate alpha EC domain protein has the same or similar function with fibrinogen-420. Fibrinogen-420 and its active domain can be widely used in inhibiting protein aggregation, helping protein refolding, drugs which can prevent and/or treat protein conformation disease, detecting denatured protein in quality control and protect protein from denaturation.Type: ApplicationFiled: September 6, 2013Publication date: March 27, 2014Applicant: Tsinghua UniversityInventors: YONGZHANG LUO, Huadong Tang, Yan Fu
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Publication number: 20140056966Abstract: The present invention provides an anti-tumor or anti-angiogenesis medicament, the combination or kit containing the medicament, and the method for producing the same. The anti-tumor or anti-angiogenesis medicament contains a conjugate comprising a modifying agent and the angiostatin or its fragments, wherein the conjugate exhibits prolonged in vivo half-life as compared to an unmodified angiostatin or its fragments. The modifying agent is selected from the group consisting of macromolecular polymers, protein molecules or fragments thereof, peptides, small molecules, or chemical substances of any other forms.Type: ApplicationFiled: June 5, 2012Publication date: February 27, 2014Applicant: PROTGEN LTD.Inventors: Yongzhang LUO, Guodong Chang, Shuling Yang, Lei Gao, Yan Fu
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Publication number: 20140037655Abstract: 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: ApplicationFiled: August 8, 2013Publication date: February 6, 2014Applicants: Protgen Ltd., Tsinghua UniversityInventors: YONGZHANG LUO, Wei Zhuo, Yan Fu, Guodong Chang
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Publication number: 20130243757Abstract: 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: ApplicationFiled: March 4, 2013Publication date: September 19, 2013Applicants: Protgen Ltd., Tsinghua UniversityInventors: Yongzhang Luo, Xiaomin Song, Xiaofeng Wang, Wei Zhuo, Guodong Chang, Yan Fu
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Patent number: 8389684Abstract: The present invention relates to the diagnosis and treatment of cancer, and specifically to a method of diagnosing the presence 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: GrantFiled: September 13, 2010Date of Patent: March 5, 2013Assignees: Tsinghua University, Protgen Ltd.Inventors: Yongzhang Luo, Xiaomin Song, Xiaofeng Wang, Wei Zhuo, Guodong Chang, Yan Fu
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Publication number: 20130023479Abstract: 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: ApplicationFiled: July 20, 2012Publication date: January 24, 2013Applicants: Protgen Ltd., Tsinghua UniversityInventors: Yongzhang Luo, Wei Zhuo, Yan Fu, Guodong Chang
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Publication number: 20120064078Abstract: The present invention relates to the diagnosis and treatment of cancer, and specifically to a method of diagnosing the presence 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: ApplicationFiled: September 13, 2010Publication date: March 15, 2012Applicants: PROTGEN LTD., TSINGHUA UNIVERSITYInventors: Yongzhang LUO, Xiaomin SONG, Xiaofeng WANG, Wei ZHUO, Guodong CHANG, Yan FU
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Publication number: 20100303893Abstract: Specific modifying agent is coupled to an anti-tumor protein on a certain site. It conquers the disadvantages which include high antigenicity, short circulating half-life, nonuniform modified sites, inhomogeneous component, reduced activity and uncontrollable quality of the products prepared by non-specific modifying method. The anti-tumor protein coupled with specific modifying agent can be used for the treatment of tumor and for manufacturing an anti-tumor medicament.Type: ApplicationFiled: January 19, 2007Publication date: December 2, 2010Inventors: Yongzhang Luo, Hao Zhou, Qingxin Lei, Guodong Chang
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Publication number: 20100285103Abstract: 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: ApplicationFiled: January 19, 2007Publication date: November 11, 2010Inventors: Yongzhang Luo, Qing Han, Qingxin Lei, Guodong Chang, Yan Fu
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Publication number: 20100184661Abstract: The present invention provides an anti-tumor or anti-angiogenesis medicament, the combination or kit containing the medicament, and the method for producing the same. The anti-tumor or anti-angiogenesis medicament contains a conjugate comprising a modifying agent and the angiostatin or its fragments, wherein the conjugate exhibits prolonged in vivo half-life as compared to an unmodified angiostatin or its fragments. The modifying agent is selected from the group consisting of macromolecular polymers, protein molecules or fragments thereof, peptides, small molecules, or chemical substances of any other forms.Type: ApplicationFiled: January 10, 2008Publication date: July 22, 2010Applicant: Protgen Ltd.Inventors: Yongzhang Luo, Guodong Chang, Shuling Yang, Lei Gao, Yan Fu
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Publication number: 20090191224Abstract: The present invention provides for diagnostic kits for identifying cancer patients who are more susceptible to cancer therapies employing endostatin and other angiogenesis inhibitors, based upon the discovery that Nucleolin is a specific receptor for Endostatin. In particular, the diagnostic kits include antibody molecules against Nucleolin, DNA or RNA molecules that specifically bind to nucleic acid molecules encoding Nucleolin. The present invention also discloses methods of screening for angiogenesis inhibitors which specifically interact with Nucleolin, and act as angiogenesis inhibitors in an analogous manner as Endostatin. In addition, the present invention discloses methods of inhibiting the proliferation of endothelial cells or angiogenesis of tumor by administering an anti-nucleolin antibody linked to a cytotoxic agent such as tumor necrosis factor alpha to the endothelial cells.Type: ApplicationFiled: March 26, 2009Publication date: July 30, 2009Applicants: Tsinghua University, Protogen Ltd.Inventors: Yongzhang Luo, Hubing Shi
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Patent number: 7470667Abstract: The present invention provides methods of treating an angiogenesis-related disease of a subject using a therapeutically effective amount of a modified endostatin protein. In particular, the methods encompass treating an angiogenesis-related disease of a subject using a combination of the modified endostatin, and a known cancer therapy agent such as a chemotherapy agent, or a radiotherapy agent.Type: GrantFiled: April 29, 2005Date of Patent: December 30, 2008Assignee: Medgenn (Hong Kong) LtdInventors: Yongzhang Luo, Zhuobing Zhang, Qingxin Lei, Yan Sun, Jinwan Wang
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Publication number: 20060258605Abstract: The present invention provides for diagnostic kits for identifying cancer patients who are more susceptible to cancer therapies employing endostatin and other angiogenesis inhibitors, based upon the discovery that Nucleolin is a specific receptor for Endostatin. In particular, the diagnostic kits include antibody molecules against Nucleolin, DNA or RNA molecules that specifically bind to nucleic acid molecules encoding Nucleolin. The present invention also discloses methods of screening for angiogenesis inhibitors which specifically interact with Nucleolin, and act as angiogenesis inhibitors in an analogous manner as Endostatin. In addition, the present invention discloses methods of inhibiting the proliferation of endothelial cells or angiogenesis of tumor by administering an anti-nucleolin antibody linked to a cytotoxic agent such as tumor necrosis factor alpha to the endothelial cells.Type: ApplicationFiled: July 29, 2005Publication date: November 16, 2006Inventors: Yongzhang Luo, Hubing Shi
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Patent number: 7078485Abstract: The invention relates to endostatin protein, in particular, to N-terminal modified recombinant human endostatin (rhEndostatin) proteins which have an additional metal chelating peptide sequence at the N-terminal, the preparation thereof, and methods of modifying the rhEndostatin to improve its stability in vivo and in vitro, and its biological activity. The invention further related to the resulting N-terminal modified rhEndostatin protein, a pharmaceutical composition containing the same, and use of said modified rhEndostatin or its pharmaceutical composition in treating the angiogenesis-related diseases, especially angiogenesis-dependent tumors.Type: GrantFiled: December 5, 2002Date of Patent: July 18, 2006Assignee: Yantai Medgenn Ltd.Inventors: Yongzhang Luo, Bing Zhou, Zhuobing Zhang