Patents Assigned to Bio-Thera Solutions, Ltd.
  • Publication number: 20230416386
    Abstract: The use of an anti-OX40 antibody or an antigen-binding fragment in the treatment of a tumor or cancer, is described. Also described is a treatment method of a tumor or cancer and includes administering to a patient in need an effective amount of an anti-OX40 antibody or an antigen-binding fragment. Kits including an anti-OX40 antibody or an antigen-binding fragment are also described.
    Type: Application
    Filed: November 18, 2021
    Publication date: December 28, 2023
    Applicant: Bio-Thera Solutions, Ltd.
    Inventors: Shizhong LIANG, Binghui LIANG, Jin-Chen YU, Xiao LI, Shuqiang SONG, Shengfeng LI
  • Publication number: 20230190649
    Abstract: The invention relates to a liquid formulation of humanized antibody for treating IL-6 related diseases. The liquid formulation contains 2-100 mg/ml recombinant humanized anti-human interleukin 6 receptor monoclonal antibody, 5-20 mM histidine salt buffer (or a buffer of a combination of 5-20 mM histidine salt and 5-20 mM sodium acetate), 0.025-0.075% (by volume) surfactant, and 3-5% (by mass to volume) stabilizer and water for injection. The antibody formulation enhances the stability of the recombinant anti-human interleukin 6 receptor monoclonal antibody, prevents the monoclonal antibody from aggregation, degradation, and acidic isomer increases. This formulation can be used for stabilizing the structure and function of the humanized antibody.
    Type: Application
    Filed: October 12, 2022
    Publication date: June 22, 2023
    Applicant: Bio-Thera Solutions, Ltd.
    Inventors: Jian LIN, Fan LIU, Rui YUE, Zhihao WU, Shengwu WANG, Shengfeng LI
  • Publication number: 20230139700
    Abstract: The development and use of an anti-OX40 antibody and immune cell activation is disclosed. The anti-OX40 antibody or a fragment of the anti-OX40 antibody retains strong binding to human OX40 or Rhesus Monkey OX40. The anti-OX40 antibody or a fragment of the anti-OX40 antibody more effectively activates T cells, generates stronger immune responses, and improves anti-tumor activity.
    Type: Application
    Filed: March 22, 2021
    Publication date: May 4, 2023
    Applicant: Bio-Thera Solutions, Ltd.
    Inventors: Shizhong LIANG, Dandan ZHENG, Jin-Chen YU, Shengfeng LI
  • Patent number: 11505609
    Abstract: The present invention, in the field of bioengineering and biotechnology, relates to a method for preparing a recombinant antibody with a unique glycan profile produced by a genome-edited CHO host cell. Specifically, according to a method of the present invention, the TALEN technology is used to edit the FUT8 gene in CHO cells that have been adapted for serum-free suspension growth. The edited CHO host cells can produce recombinant antibodies with a unique glycan profile. The unique glycan profile can be characterized by non-fucosylated N-linked oligosaccharide chains of the antibodies, extremely low N-glycosylation heterogeneity and uniform carbohydrate chains. The antibody prepared by the method of the invention exhibit significantly increased ADCC and greater stability.
    Type: Grant
    Filed: August 10, 2018
    Date of Patent: November 22, 2022
    Assignee: Bio-Thera Solutions, Ltd.
    Inventors: Chao Qin, Yuanqing Zhou, Cuizhen Xiao
  • Patent number: 11192954
    Abstract: The present invention generally relates to compounds comprising antibodies, antigen-binding fragments thereof, polypeptides, and immunoconjugates that bind to TROP2 (TACSTD2). The present invention also relates to methods of using such TROP2-binding molecules for diagnosing and treating diseases, such as malignancies.
    Type: Grant
    Filed: August 10, 2018
    Date of Patent: December 7, 2021
    Assignee: Bio-Thera Solutions, Ltd.
    Inventors: Weijia Tang, Xiaoyang Huang, Jin-Chen Yu, Ziqiang Ou, Xian Peng, Yili Yang, Shengfeng Li, Chao Qin
  • Publication number: 20210079081
    Abstract: The present invention relates to a full length humanized monoclonal antibody that can specifically bind to VEGF. The antibody can inhibit binding of VEGF to VEGFR-1 and VEGFR-2, thereby inhibiting signaling of VEGF. The antibody has a strong affinity for VEGF, has a long half-life, and is highly safe after vitreous injection. The antibody of the invention may be effective in treating diseases associated with VEGF overexpression, particularly diseases associated with abnormal angiogenesis caused by VEGF overexpression.
    Type: Application
    Filed: January 4, 2019
    Publication date: March 18, 2021
    Applicant: BIO-THERA SOLUTIONS, LTD.
    Inventors: Xiaoyun Wu, Chenchao Xu, Zhigang Wang, Shengfeng Li
  • Publication number: 20190048095
    Abstract: The present invention generally relates to compounds comprising antibodies, antigen-binding fragments thereof, polypeptides, and immunoconjugates that bind to TROP2 (TACSTD2). The present invention also relates to methods of using such TROP2-binding molecules for diagnosing and treating diseases, such as malignancies.
    Type: Application
    Filed: August 10, 2018
    Publication date: February 14, 2019
    Applicant: BIO-THERA SOLUTIONS, LTD.
    Inventors: Weijia TANG, Xiaoyang HUANG, Jin-Chen YU, Ziqiang OU, Xian PENG, Yili YANG, Shengfeng LI, Chao QIN
  • Publication number: 20170258935
    Abstract: Disclosed herein are anti-ERB B2/NEU antibodies conjugated with maytansinoid drugs for targeted delivery to disease tissues. Methods relating to the preparation and uses of such drug conjugates to treat ERB B2/NEU positive cells in cancers are provided.
    Type: Application
    Filed: May 26, 2017
    Publication date: September 14, 2017
    Applicant: Bio-Thera Solutions, Ltd., Co.
    Inventors: Weijia Tang, Shengfeng Li, Jin-Chen Yu, Xiaobin Deng
  • Patent number: 9737616
    Abstract: Disclosed herein are anti-ERB B2/NEU antibodies conjugated with maytansinoid drugs for targeted delivery to disease tissues. Methods relating to the preparation and uses of such drug conjugates to treat ERB B2/NEU positive cells in cancers are provided.
    Type: Grant
    Filed: July 17, 2015
    Date of Patent: August 22, 2017
    Assignee: Bio-Thera Solutions, Ltd., Co.
    Inventors: Weijia Tang, Shengfeng Li, Jin-Chen Yu, Xiaobin Deng
  • Patent number: 9567403
    Abstract: Provided are bispecific antibodies having a full-size antibody portion with two light chains and two heavy chains, wherein the two heavy chains each is fused to a single-chain variable fragment (scFv) portion. In certain embodiments, the full-size antibody has specificity to EGFR and the scFv has specificity to VEGF.
    Type: Grant
    Filed: August 5, 2014
    Date of Patent: February 14, 2017
    Assignee: Bio-Thera Solutions, Ltd.
    Inventors: Xiaoyun Wu, Shengfeng Li, Chenchao Xu
  • Patent number: 9345786
    Abstract: Disclosed herein are maytansinoid drug linker derivatives which can be linked to a antigen binding unit (Abu), and maytansinoid drugs linked with an antigen binding unit (Drug-Linker-Antigen binding Unit: D-L-Abu), for targeted delivery to disease tissues. D-L-Abu, D-L-Abu derivatives, and methods relating to the use of such drug conjugates to treat antigen positive cells in cancers and immunological disorders are provided.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: May 24, 2016
    Assignee: Bio-Thera Solutions, Ltd., Co.
    Inventors: Shengfeng Li, Xiaobin Deng, Songnuan Tan, Weijia Tang, Chao Qin
  • Patent number: 9314536
    Abstract: Disclosed herein are anti-EGFR antibodies conjugated with maytansinoid drugs for targeted delivery to disease tissues. Methods related to the preparation and uses of such antibody drug conjugates to treat EGFR positive cells in cancers are provided.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: April 19, 2016
    Assignee: Bio-Thera Solutions, Ltd., Co.
    Inventors: Chao Qin, Shengfeng Li
  • Publication number: 20150320881
    Abstract: Disclosed herein are anti-ERB B2/NEU antibodies conjugated with maytansinoid drugs for targeted delivery to disease tissues. Methods relating to the preparation and uses of such drug conjugates to treat ERB B2/NEU positive cells in cancers are provided.
    Type: Application
    Filed: July 17, 2015
    Publication date: November 12, 2015
    Applicant: BIO-THERA SOLUTIONS, LTD., CO.
    Inventors: Weijia Tang, Shengfeng Li, Jin-Chen Yu, Xiaobin Deng
  • Patent number: 8889855
    Abstract: Provided are efficient methods for direct coupling of a maytansinoid with a carboxylic acid to prepare a maytansinoid C-3 ester in high yield using a rare earth metal-based or trifluoromethanesulfonate-based Lewis acid catalyst and a base together with a coupling reagent. Also provided are compositions used in such methods.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: November 18, 2014
    Assignee: Bio-Thera Solutions Ltd., Co.
    Inventor: Xiaobin Deng
  • Patent number: 8877706
    Abstract: Disclosed herein are maytansinoid drug linker derivatives which can be linked to a antigen binding unit (Abu), and maytansinoid drugs linked with an antigen binding unit (Drug-Linker-Antigen binding Unit: D-L-Abu), for targeted delivery to disease tissues. D-L-Abu, D-L-Abu derivatives, and methods relating to the use of such drug conjugates to treat antigen positive cells in cancers and immunological disorders are provided.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: November 4, 2014
    Assignee: Bio-Thera Solutions Ltd., Co.
    Inventors: Shenfeng Li, Xiaobin Deng, Songnuan Tan, Weijia Tang, Chao Qin
  • Publication number: 20140178411
    Abstract: Disclosed herein are anti-CD20 antibody conjugated with maytansinoid drugs for targeted delivery to disease tissues. Methods related to the preparation and uses of such antibody drug conjugates to treat CD20 positive cells in cancers are provided.
    Type: Application
    Filed: March 15, 2013
    Publication date: June 26, 2014
    Applicant: BIO-THERA SOLUTIONS, LTD., CO.
    Inventors: Chao Qin, Shengfeng Li
  • Publication number: 20140178413
    Abstract: Disclosed herein are anti-ERB B2/NEU antibodies conjugated with maytansinoid drugs for targeted delivery to disease tissues. Methods relating to the preparation and uses of such drug conjugates to treat ERB B2/NEU positive cells in cancers are provided.
    Type: Application
    Filed: March 15, 2013
    Publication date: June 26, 2014
    Applicant: BIO-THERA SOLUTIONS, LTD., CO.
    Inventor: Bio-Thera Solutions, Ltd. Co.
  • Publication number: 20140178414
    Abstract: Disclosed herein are maytansinoid drug linker derivatives which can be linked to a antigen binding unit (Abu), and maytansinoid drugs linked with an antigen binding unit (Drug-Linker-Antigen binding Unit: D-L-Abu), for targeted delivery to disease tissues. D-L-Abu, D-L-Abu derivatives, and methods relating to the use of such drug conjugates to treat antigen positive cells in cancers and immunological disorders are provided.
    Type: Application
    Filed: March 15, 2013
    Publication date: June 26, 2014
    Applicant: BIO-THERA SOLUTIONS, LTD., CO.
    Inventor: BIO-THERA SOLUTIONS, LTD., CO.
  • Publication number: 20140179917
    Abstract: Provided are efficient methods for direct coupling of a maytansinoid with a carboxylic acid to prepare a maytansinoid C-3 ester in high yield using a rare earth metal-based or trifluoromethanesulfonate-based Lewis acid catalyst and a base together with a coupling reagent. Also provided are compositions used in such methods.
    Type: Application
    Filed: March 15, 2013
    Publication date: June 26, 2014
    Applicant: BIO-THERA SOLUTIONS, LTD., CO.
    Inventor: Xiaobin DENG