Patents by Inventor Guansai LIU

Guansai LIU 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: 20230295610
    Abstract: A synthesis and screening method of a DNA-encoded compound library. The DNA-encoded compound library consists of a DNA-encoded compound of formula (I). The screening method includes: incubating the DNA-encoded compound library with a protein target, followed by covalent cross-linking to obtain a covalently cross-linked complex; separating the covalently cross-linked complex from members in the library that do not bind to the protein target; and subjecting the covalently cross-linked complex to polymerase chain reaction (PCR) amplification and DNA sequencing.
    Type: Application
    Filed: May 26, 2023
    Publication date: September 21, 2023
    Inventors: Jin LI, Guansai LIU, Huadong LUO, Liu CHEN, Junyang ZHU, Huiyong MA, Chao SONG, Jinqiao WAN
  • Patent number: 10801022
    Abstract: The present invention provides a method of solid-phase synthesis of DNA-encoded compound library. The method includes following steps: a) reacting solid carrier G-1 with linker molecule L-1 to prepare L-G-1; b) reacting DNA with linker molecule L-0 to prepare L-2; c) reacting L-G-1 with L-2 to prepare L-G-2; d) removing protection group of the L-G-2 and obtaining L-G-2-1; e) reacting the L-G-2-1 with synthetic building block and performing DNA encoding; and f) removing the solid carrier and obtaining the DNA-encoded compound library. Compared with the prior art, the present invention can complete post-treatment purification of the reaction only by filtration and irrigation processes for several times. The present invention is simple to operate, can shorten the production cycle of DNA encoded compound library with more than 50%, significantly increases the production efficiency and the unicity as well as the purity of the final products.
    Type: Grant
    Filed: October 13, 2017
    Date of Patent: October 13, 2020
    Assignee: Hitgen INC.
    Inventors: Jin Li, Jinqiao Wan, Guansai Liu, Dengfeng Dou
  • Publication number: 20200149034
    Abstract: Methods of producing compounds and combinatorial compound libraries, the compounds and libraries produced via the methods are provided, and methods of using the libraries to identify compounds having a desired property, such as a desired biological activity and the compounds identified using these methods are provided.
    Type: Application
    Filed: March 16, 2018
    Publication date: May 14, 2020
    Inventors: Jin Li, Barry A. Morgan, Jinqiao Wan, Dengfeng Dou, Guansai Liu, Yong Chang, Qiuxia Chen, Xing Wang, Yanshan Xu, Dongyan Hu, Jian Liu, Xuemin Cheng
  • Publication number: 20180155710
    Abstract: The present invention provides a method of solid-phase synthesis of DNA-encoded compound library. The method includes following steps: a) reacting solid carrier G-1 with linker molecule L-1 to prepare L-G-1; b) reacting DNA with linker molecule L-0 to prepare L-2; c) reacting L-G-1 with L-2 to prepare L-G-2; d) removing protection group of the L-G-2 and obtaining L-G-2-1; e) reacting the L-G-2-1 with synthetic building block and performing DNA encoding; and f) removing the solid carrier and obtaining the DNA-encoded compound library. Compared with the prior art, the present invention can complete post-treatment purification of the reaction only by filtration and irrigation processes for several times. The present invention is simple to operate, can shorten the production cycle of DNA encoded compound library with more than 50%, significantly increases the production efficiency and the unicity as well as the purity of the final products.
    Type: Application
    Filed: October 13, 2017
    Publication date: June 7, 2018
    Inventors: Jin LI, Jinqiao WAN, Guansai LIU, Dengfeng DOU