Patents by Inventor Qiaobing Xu

Qiaobing Xu 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).

  • Patent number: 12133855
    Abstract: Disclosed are compounds of formula (I) below: wherein each of the variables A, B, X, W, V, R1-R5, and m is defined herein. Also disclosed are pharmaceutical compositions containing a nanocomplex, wherein the nanocomplex is formed of one of the compounds, and a protein, a nucleic acid, or a small molecule; and methods of treating a medical condition with one of the pharmaceutical compositions.
    Type: Grant
    Filed: February 1, 2019
    Date of Patent: November 5, 2024
    Assignee: Trustees of Tufts College
    Inventors: Qiaobing Xu, Yamin Li
  • Publication number: 20240239908
    Abstract: An antibody-conjugated nanoparticle, 50 to 1000 nm in size, containing an anti-Mullerian hormone receptor II (AMHRII) antibody that is conjugated to a nanocomplex formed of a lipid-based delivery agent and a cytotoxin, the delivery agent and the cytotoxin being non-covalently bonded to each other. Also disclosed are a method of preparing such an antibody-conjugated nanoparticle and use thereof for inducing sterilization in a subject and for treating an AMHRII-associated condition.
    Type: Application
    Filed: August 28, 2023
    Publication date: July 18, 2024
    Inventors: Sandra L. Ayres, Qiaobing Xu, Kristy L. Meadows
  • Publication number: 20240216289
    Abstract: Disclosed are lipidoid compositions that are capable of treating or preventing certain diseases (e.g., cancer or viral infections). Also disclosed are pharmaceutical compositions, comprising the lipidoid compositions. The disclosure also relates to methods of using the lipidoid compositions, and related kits comprising the lipidoid compositions.
    Type: Application
    Filed: May 2, 2022
    Publication date: July 4, 2024
    Inventors: Qiaobing Xu, Jinjin Chen, Zhongfeng Ye
  • Publication number: 20240024466
    Abstract: Disclosed are lipidoid compositions that are capable of treating or preventing certain diseases (e.g., cancer or viral infections). Also disclosed are pharmaceutical compositions, comprising the lipidoid compositions. The present disclose also relates to methods of using the lipidoid compositions, and related kits comprising the lipidoid compositions.
    Type: Application
    Filed: December 7, 2021
    Publication date: January 25, 2024
    Inventors: Qiaobing Xu, Jinjin chen
  • Publication number: 20230414723
    Abstract: Disclosed are conjugates, comprising a PROTAC and a protein. Also disclosed are nanoparticles, comprising the conjugates disclosed herein and a membrane. The present disclosure further relates to therapeutic methods of using the conjugates and nanoparticles.
    Type: Application
    Filed: October 26, 2021
    Publication date: December 28, 2023
    Inventors: Qiaobing Xu, Jinjin Chen
  • Publication number: 20230405022
    Abstract: Disclosed are compounds of formula (I) below: wherein each of the variables A, B, X, W, V, R1-R5, and m is defined herein. Also disclosed are pharmaceutical compositions containing a nanocomplex, wherein the nanocomplex is formed of one of the compounds, and a protein, a nucleic acid, or a small molecule; and methods of treating a medical condition with one of the pharmaceutical compositions.
    Type: Application
    Filed: June 2, 2023
    Publication date: December 21, 2023
    Inventors: Qiaobing Xu, Yamin Li
  • Publication number: 20230321036
    Abstract: Disclosed are lipidoid compounds as well as lipidoid nanoparticles comprising such compounds.
    Type: Application
    Filed: June 10, 2021
    Publication date: October 12, 2023
    Inventors: Qiaobing Xu, Yamin Li
  • Patent number: 11666539
    Abstract: Disclosed are (i) compounds of formula I, or pharmaceutically acceptable salts thereof, and (ii) lipidoid nanoparticles comprising compound of formula I or pharmaceutically acceptable salts thereof, as well as their use as vehicles for drug delivery across the blood-brain barrier.
    Type: Grant
    Filed: June 4, 2021
    Date of Patent: June 6, 2023
    Assignee: Trustees of Tufts College
    Inventor: Qiaobing Xu
  • Publication number: 20230097743
    Abstract: Disclosed are lipid compounds comprising imidazole heads and lipidoid nanoparticles (LNPs) comprising the lipidoid compounds disclosed herein for efficient nucleic acid delivery to T cells.
    Type: Application
    Filed: March 2, 2021
    Publication date: March 30, 2023
    Inventor: Qiaobing Xu
  • Publication number: 20230001011
    Abstract: A nanocomplex, 50 to 1000 nm in size, containing a lipid-like nanoparticle formed of a cationic lipid-based compound and a modified protein formed of a protein and an anionic polymer that includes a plurality of polar groups, the lipid-like nanoparticle and the modified protein being non-covalently bonded to each other. Also disclosed are a method of preparing the above-described nanocomplex and use thereof for treating a medical condition. Further disclosed is a pharmaceutical composition containing a nanocomplex.
    Type: Application
    Filed: January 21, 2022
    Publication date: January 5, 2023
    Inventor: Qiaobing Xu
  • Publication number: 20220323369
    Abstract: Disclosed are (i) compounds of formula I, or pharmaceutically acceptable salts thereof; and (ii) lipidoid nanoparticles comprising compound of formula I or pharmaceutically acceptable salts thereof, as well as their use as vehicles for drug delivery across the blood-brain barrier.
    Type: Application
    Filed: June 13, 2022
    Publication date: October 13, 2022
    Inventor: Qiaobing Xu
  • Publication number: 20220315529
    Abstract: Disclosed are noncationic lipidoid nanoparticles (LNPs) for His-tagged protein delivery.
    Type: Application
    Filed: July 31, 2020
    Publication date: October 6, 2022
    Inventors: Qiaobing Xu, Yamin Li
  • Publication number: 20220299494
    Abstract: The present disclosure provides a method for screening drug delivery vehicles for use in delivering cargo via oral delivery. The method includes introducing a drug delivery vehicle comprising an imaging agent into a lumen of an artificial intestine system composed of a scaffold matrix material. The scaffold matrix material includes an interconnected network of pores, intestinal epithelial cells positioned on an inner surface of the lumen, and human-based cells positioned within the pores and surrounding the intestinal epithelial cells. The method includes maintaining the artificial intestine system in physiologically relevant conditions for a predetermined length of time, and detecting a color change induced by the imaging agent within at least a portion of the human-based cells.
    Type: Application
    Filed: August 28, 2020
    Publication date: September 22, 2022
    Inventors: David L. Kaplan, Qiaobing Xu
  • Publication number: 20220168231
    Abstract: Provided are methods of treating a human lipoprotein metabolism disorder or a cardiovascular disease, comprising administering to a subject in need thereof a lipidoid nanoparticle, comprising a lipid, a CRISPR/Cas9 mRNA, and a single guide RNA (sgRNA)
    Type: Application
    Filed: December 6, 2021
    Publication date: June 2, 2022
    Inventors: Qiaobing Xu, Ming Wang
  • Patent number: 11235067
    Abstract: A nanocomplex, 50 to 1000 nm in size, containing a lipid-like nanoparticle formed of a cationic lipid-based compound and a modified protein formed of a protein and an anionic polymer that includes a plurality of polar groups, the lipid-like nanoparticle and the modified protein being non-covalently bonded to each other. Also disclosed are a method of preparing the above-described nanocomplex and use thereof for treating a medical condition. Further disclosed is a pharmaceutical composition containing a nanocomplex.
    Type: Grant
    Filed: January 23, 2018
    Date of Patent: February 1, 2022
    Assignee: Trustees of Tufts College
    Inventor: Qiaobing Xu
  • Publication number: 20210346307
    Abstract: Disclosed are (i) compounds of formula I, or pharmaceutically acceptable salts thereof; and (ii) lipidoid nanoparticles comprising compound of formula I or pharmaceutically acceptable salts thereof, as well as their use as vehicles for drug delivery across the blood-brain barrier.
    Type: Application
    Filed: June 4, 2021
    Publication date: November 11, 2021
    Inventor: Qiaobing Xu
  • Patent number: 10888622
    Abstract: A nanocomplex containing a delivery agent and a pharmaceutical agent. The nanocomplex has a particle size of 50 to 1000 nm, the delivery agent binds to the pharmaceutical agent via non-covalent interaction or covalent bonding, and the pharmaceutical agent is a modified peptide or protein formed of a peptide or protein and an added chemical moiety that contains an anionic group, a disulfide group, a hydrophobic group, a pH responsive group, a light responsive group, a reactive oxygen species responsive group, or a combination thereof.
    Type: Grant
    Filed: May 13, 2014
    Date of Patent: January 12, 2021
    Assignee: Trustees of Tufts College
    Inventors: Qiaobing Xu, Ming Wang
  • Publication number: 20200405639
    Abstract: The disclosure includes non-naturally occurring or engineered CRISPR systems and proteins, associated with a delivery system comprising a virus component and a lipid component. The disclosure includes CRISPR proteins associated with capsid proteins, e.g., AAV VP!, VP2, and/or VP3, on the surface of or internal to the AAV, along with compositions, systems and complexes involving the AAV-CRISPR protein, nucleic acid molecules and vectors encoding the same, deliver}-systems, and uses therefor.
    Type: Application
    Filed: April 16, 2018
    Publication date: December 31, 2020
    Inventors: Feng Zhang, Sourav Choudhury, Qiaobing Xu
  • Publication number: 20200368254
    Abstract: Disclosed are compounds of formula (I) below: wherein each of the variables A, B, X, W, V, R1-R5, and m are defined herein. Also disclosed are pharmaceutical compositions containing a nanocomplex, wherein the nanocomplex is formed of one of the compounds, and a protein, a nucleic acid, or a small molecule; and methods of treating a medical condition with one of the pharmaceutical compositions.
    Type: Application
    Filed: February 1, 2019
    Publication date: November 26, 2020
    Inventors: Qiaobing Xu, Yamin Li
  • Patent number: 10792328
    Abstract: A nanocomplex, of particle size 50 nm to 1000 nm, containing saporin and a lipid-like compound, in which saporin binds to the lipid-like compound via non-covalent interaction or covalent bonding. The lipid-like compound has a hydrophilic moiety, a hydrophobic moiety, and a linker joining the hydrophilic moiety and the hydrophobic moiety. The hydrophilic moiety is optionally charged and the hydrophobic moiety has 8 to 24 carbon atoms. Also disclosed is a pharmaceutical composition containing such a nanocomplex and a pharmaceutically acceptable carrier. The nanocomplex is useful in treating diseases, such as cancer.
    Type: Grant
    Filed: January 15, 2019
    Date of Patent: October 6, 2020
    Assignee: Trustees of Tufts College
    Inventors: Qiaobing Xu, Ming Wang