Patents by Inventor Peisheng Xu

Peisheng 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).

  • Publication number: 20250025560
    Abstract: Methods are described for treatment of Alzheimer's Disease as well as other neurodegenerative disorders in which microglia and/or astrocyte abilities have been altered and impaired. Methods include brain-targeting of PD-L1 using a brain targeted nanogel loaded with PDL1 antibody and functionalized with two particular targeting ligands. The nanogels can successfully cross the blood brain barrier to release the antibody and reduce PD-L1 expression in the brain while preserving the integrity of the BBB.
    Type: Application
    Filed: April 29, 2024
    Publication date: January 23, 2025
    Inventors: Peisheng Xu, Mingming Wang
  • Publication number: 20240293571
    Abstract: Disclosed are brain-targeted antibody delivery systems, methods of forming the systems, and methods of using the systems. The systems include hydrophilic nanogels based upon poly(ethylene glycol) copolymers. The nanogels can encapsulate an antibody for delivery to the brain and can include ligands for blood brain barrier (BBB) receptors on the surface, and as such, can utilize a systemic route of administration for delivery of the antibody to the brain and the eye. The systems can be utilized for systemic delivery routes to deliver the antibody to the brain side of the blood brain barrier and inside glial cells and degrade its corresponding protein. The systems can be utilized in treatment of neurodegenerative or retinal disorders.
    Type: Application
    Filed: March 3, 2022
    Publication date: September 5, 2024
    Inventors: PEISHENG XU, MINGMING WANG
  • Publication number: 20240148881
    Abstract: A carrier-free nanoparticle based on the self-assembly of curcumin-erlotinib conjugate (EPC) that exhibits stronger cell killing, better anti-migration effects, and anti-invasion effects for pancreatic cancer cells than the combination of free curcumin and erlotinib.
    Type: Application
    Filed: January 10, 2024
    Publication date: May 9, 2024
    Inventor: PEISHENG XU
  • Patent number: 11904022
    Abstract: A carrier-free nanoparticle based on the self-assembly of curcumin-erlotinib conjugate (EPC) that exhibits stronger cell killing, better anti-migration effects, and anti-invasion effects for pancreatic cancer cells than the combination of free curcumin and erlotinib.
    Type: Grant
    Filed: March 26, 2021
    Date of Patent: February 20, 2024
    Assignee: UNIVERSITY OF SOUTH CAROLINA
    Inventor: Peisheng Xu
  • Publication number: 20240033240
    Abstract: The preparation of dual functionalized nanoparticles is generally provided along with their application. The dual functionalized nanoparticles provide dual targeting and can effectively pass the blood brain barrier and target brain tissue. The dual targeted and dual responsive nanoparticles are functionalized to include at least two different ligands that are capable of transport across the blood brain barrier. The nanoparticles can be prepared from polymeric materials that can be biocompatible, provide long circulation life in a body, and be successfully ligated to both functionalities by use of acid-sensitive and/or redox potential-sensitive bonds for delivery across the blood brain barrier and delivery of a payload to brain tissue.
    Type: Application
    Filed: October 2, 2023
    Publication date: February 1, 2024
    Inventors: Peisheng Xu, Eleni Markoutsa
  • Publication number: 20230310331
    Abstract: Described herein are systems and methods for employing a tumor targeted cerium oxide nanoparticle system, T-CeNP, for cancer therapy to hinder cancer associated fibroblast (CAF) transdifferentiation and reprogram CAFs back to normal fibroblasts to reduce tumor size and prevent metastasis.
    Type: Application
    Filed: October 14, 2022
    Publication date: October 5, 2023
    Applicant: University of South Carolina
    Inventor: Peisheng Xu
  • Publication number: 20230190791
    Abstract: Described herein are methods and systems for the preparation of a brain targeted cerium oxide nanop article (CeNP) and its application in treating central neuronal system diseases. The brain targeted CeNP (T-CeNP) can effectively pass the blood brain barrier and specifically target brain tissue and exhibit anti-inflammatory and anti-oxidant effects.
    Type: Application
    Filed: October 24, 2022
    Publication date: June 22, 2023
    Applicant: University of South Carolina
    Inventors: Peisheng Xu, Haijun Liu
  • Patent number: 11478493
    Abstract: A hetero-targeted, dual-responsive nanogel to deliver chemotherapeutic agents to a metastatic cancer is provided. The nanogel includes a first chemotherapeutic agent, a second chemotherapeutic agent, a first targeting ligand, and a second targeting ligand. A method of treating cancer in a mammal with the nanogel are also provided.
    Type: Grant
    Filed: January 7, 2020
    Date of Patent: October 25, 2022
    Assignee: University of South Carolina
    Inventors: Peisheng Xu, Binglin Sui
  • Publication number: 20210403644
    Abstract: Described herein are systems and methods for the degradation of endogenous protein with the help of a nanocarrier, which has the advantage of easy scale-up and feasibility for in vivo application.
    Type: Application
    Filed: April 28, 2021
    Publication date: December 30, 2021
    Applicant: University of South Carolina
    Inventor: Peisheng Xu
  • Publication number: 20210369861
    Abstract: A carrier-free nanoparticle based on the self-assembly of curcumin-erlotinib conjugate (EPC) that exhibits stronger cell killing, better anti-migration effects, and anti-invasion effects for pancreatic cancer cells than the combination of free curcumin and erlotinib.
    Type: Application
    Filed: March 26, 2021
    Publication date: December 2, 2021
    Applicant: University of South Carolina
    Inventor: Peisheng Xu
  • Patent number: 11007207
    Abstract: Described is a method to fabricate a gold/mesoporous silica hybrid nanoparticle. According to the process, a gold nanoparticle can be conjugated onto the surface of a mesoporous silica nanoparticle to yield a photothermal stable theranostic platform, gold/mesoporous silica hybrid nanoparticle. The nanoparticles can be useful for disease detection, treatment, and monitoring.
    Type: Grant
    Filed: August 24, 2015
    Date of Patent: May 18, 2021
    Assignee: University of South Carolina
    Inventors: Peisheng Xu, Bei Cheng, Huacheng He
  • Patent number: 11000482
    Abstract: A nanoparticle system for the treatment of metastatic cancer is provided. The nanoparticle system includes a plurality of nanoparticles. Each of the nanoparticles includes a biodegradable matrix, a polysulphonated naphthylurea, and a chemotherapeutic agent. The biodegradable matrix can be a natural polysaccharide, a protein, a peptide, or a derivative thereof. Further, the polysulphonated naphthylurea can include suramin or a pharmaceutically acceptable salt thereof, and the chemotherapeutic agent can include an anthracycline. In addition, each of the nanoparticles has a diameter ranging from about 20 nanometers to about 400 nanometers. A method of forming the nanoparticle system and a method of treating cancer in a mammal with the nanoparticle system are also provided.
    Type: Grant
    Filed: September 12, 2019
    Date of Patent: May 11, 2021
    Assignee: University of South Carolina
    Inventor: Peisheng Xu
  • Patent number: 10842755
    Abstract: A nanoparticle suitable for delivery of an active agent across the blood-brain barrier is provided. As such, the nanoparticle can target brain tissue so that the active agent can be delivered across the blood-brain barrier to the target brain tissue. The nanoparticle includes a core that includes a core material such as a polymer or inorganic material as well as an active agent; and a shell comprising a membrane derived from a brain metastatic cancer cell, wherein the brain metastatic cancer cell facilitates transport of the nanoparticle across a blood-brain barrier. Also disclosed are methods of forming the nanoparticle and methods of using the nanoparticle.
    Type: Grant
    Filed: February 19, 2019
    Date of Patent: November 24, 2020
    Assignee: University of South Carolina
    Inventor: Peisheng Xu
  • Patent number: 10835605
    Abstract: Described is a biodegradable and biocompatible hybrid nanoparticle for use in photothermal applications. The hybrid nanoparticle includes a poly(lactide-co-glycolic acid) core and a polydopamine shell. Optionally, the hybrid nanoparticle can be loaded with an active agent such as an anti-cancer agent. The hybrid nanoparticles can include detection agents, targeting agents, etc. The nanoparticles can be useful for disease detection, treatment, and monitoring.
    Type: Grant
    Filed: September 19, 2016
    Date of Patent: November 17, 2020
    Assignee: University of South Carolina
    Inventors: Peisheng Xu, Huacheng He
  • Publication number: 20200281955
    Abstract: A hetero-targeted, dual-responsive nanogel to deliver chemotherapeutic agents to a metastatic cancer is provided. The nanogel includes a first chemotherapeutic agent, a second chemotherapeutic agent, a first targeting ligand, and a second targeting ligand. A method of treating cancer in a mammal with the nanogel are also provided.
    Type: Application
    Filed: January 7, 2020
    Publication date: September 10, 2020
    Inventors: PEISHENG XU, Binglin Sui
  • Publication number: 20200155472
    Abstract: A nanoparticle system for the treatment of metastatic cancer is provided. The nanoparticle system includes a plurality of nanoparticles. Each of the nanoparticles includes a biodegradable matrix, a polysulphonated naphthylurea, and a chemotherapeutic agent. The biodegradable matrix can be a natural polysaccharide, a protein, a peptide, or a derivative thereof. Further, the polysulphonated naphthylurea can include suramin or a pharmaceutically acceptable salt thereof, and the chemotherapeutic agent can include an anthracycline. In addition, each of the nanoparticles has a diameter ranging from about 20 nanometers to about 400 nanometers. A method of forming the nanoparticle system and a method of treating cancer in a mammal with the nanoparticle system are also provided.
    Type: Application
    Filed: September 12, 2019
    Publication date: May 21, 2020
    Inventor: PEISHENG XU
  • Publication number: 20190290592
    Abstract: A nanoparticle suitable for delivery of an active agent across the blood-brain barrier is provided. As such, the nanoparticle can target brain tissue so that the active agent can be delivered across the blood-brain barrier to the target brain tissue. The nanoparticle includes a core that includes a core material such as a polymer or inorganic material as well as an active agent; and a shell comprising a membrane derived from a brain metastatic cancer cell, wherein the brain metastatic cancer cell facilitates transport of the nanoparticle across a blood-brain barrier. Also disclosed are methods of forming the nanoparticle and methods of using the nanoparticle.
    Type: Application
    Filed: February 19, 2019
    Publication date: September 26, 2019
    Inventor: PEISHENG XU
  • Patent number: 10221271
    Abstract: Polymer/copper combinations that can selectively target and kill cancer cells are described. Materials can include the reaction product of a biocompatible hydrophilic polymer and pyridine-2-thiol containing monomer. The copolymer reaction product can include pyridine-2-thiol side groups pendant to the backbone via a disulfide linkage. The hydrophilic component can form the polymer backbone and/or can form hydrophilic pendant groups off of the backbone. Copper ions can be associated with the copolymer.
    Type: Grant
    Filed: October 13, 2017
    Date of Patent: March 5, 2019
    Assignee: University of South Carolina
    Inventors: Peisheng Xu, Huacheng He
  • Patent number: 10045945
    Abstract: Delivery systems and their methods of formation are generally provided. The delivery system can protect a delivery molecule (e.g., DNA/RNA) and deliver it into a cell via serum. In one embodiment, the method can include binding a delivery molecule with polyethylenimine such that an end of the delivery molecule is exposed; capping the end of the delivery molecule with a first biocompatible polymer to form a core; and encapsulating the core with a second biocompatible polymer. The resulting delivery system can include a delivery molecule bonded with polyethylenimine such that an end of the delivery molecule is exposed; a first biocompatible polymer electrostatically bonded to the end of the delivery molecule to form a core; and a second biocompatible polymer encapsulating the core.
    Type: Grant
    Filed: September 21, 2015
    Date of Patent: August 14, 2018
    Inventors: Peisheng Xu, Remant Bahadur K C
  • Patent number: 9962401
    Abstract: The present disclosure provides a polymer comprising a derivative of chitosan, wherein the derivative is zwitterionic, as well as methods of using the polymer. In addition, the present disclosure provides a nanoparticle structure comprising a derivative of chitosan and a dendrimer, as well as methods of utilizing the nanoparticle structure.
    Type: Grant
    Filed: November 8, 2016
    Date of Patent: May 8, 2018
    Assignee: PURDUE RESEARCH FOUNDATION
    Inventors: Yoon Yeo, Gaurav Bajaj, Peisheng Xu, Karen Liu, Eun Jung Cho