Patents by Inventor Ka Leung Wong

Ka Leung Wong 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: 20250075125
    Abstract: The invention provides luminescent lanthanide nanoparticles having simultaneously an improved brightness and an increased lifetime of the excited-state. These nanoparticles comprise terbium ions and ions of a second lanthanide, preferentially europium, and are coated with molecules of chromophore ligand bonded to the surface of the nanoparticle. The ligand is an organic molecule comprising at least one chromophore radical of formula I or of formula II: wherein R is selected from H, CN group or COOH group. The phosphorescence excited-state lifetime is improved by energy transfer from surface terbium ions to core ions of the second lanthanide. The nanoparticle may further comprise a carrier molecule of analytical interest covalently attached to at least one ligand molecule.
    Type: Application
    Filed: November 20, 2024
    Publication date: March 6, 2025
    Applicants: Université De Strasbourg, Centre National De La Recherche Scientifique, Université Paris Saclay, Hong Kong Baptist University
    Inventors: Ka-Leung WONG, Joan GOETZ, Loïc CHARBONNIERE, Niko HILDEBRANDT, Aline NONAT, Cyrille CHARPENTIER, Marcelina CARDOSO DOS SANTOS, Vjona CIFLIKU
  • Patent number: 12163077
    Abstract: The invention provides luminescent lanthanide nanoparticles having simultaneously an improved brightness and an increased lifetime of the excited-state. These nanoparticles comprise terbium ions and ions of a second lanthanide, preferentially europium, and are coated with molecules of chromophore ligand bonded to the surface of the nanoparticle. The ligand is an organic molecule comprising at least one chromophore radical of formula (I) or of formula (II): wherein R is selected from H, CN group or COOH group. The phosphorescence excited-state lifetime is improved by energy transfer from surface terbium ions to core ions of the second lanthanide. The nanoparticle may further comprise a carrier molecule of analytical interest covalently attached to at least one ligand molecule.
    Type: Grant
    Filed: July 4, 2019
    Date of Patent: December 10, 2024
    Assignees: UNIVERSITE DE STRASBOURG, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, UNIVERSITE PARIS SACLAY, HONG KONG BAPTIST UNIVERSITY
    Inventors: Ka-Leung Wong, Joan Goetz, Loïc Charbonniere, Niko Hildebrandt, Aline Nonat, Cyrille Charpentier, Marcelina Cardoso Dos Santos, Vjona Cifliku
  • Patent number: 11938195
    Abstract: The present disclosure provides EBNA1 and LMP1 dual-targeting peptides and upconversion nanoparticles conjugates comprising the same useful as therapeutic and theranostic agents capable of targeting EBNA1 and LMP1 proteins present in Epstein-Barr virus infected cells, such as cancer.
    Type: Grant
    Filed: June 11, 2021
    Date of Patent: March 26, 2024
    Assignee: BP InnoMed Limited
    Inventors: Ka-Leung Wong, Hong Lok Lung, Shuai Zha, Ho-Fai Chau
  • Publication number: 20230097293
    Abstract: Polypeptides useful for treating and/or imaging latent membrane protein 1 positive cells, such as cells infected with Epstein-Barr virus and Epstein-Barr virus-associated cancers, pharmaceutical compositions comprising the same, and methods of use thereof.
    Type: Application
    Filed: June 21, 2022
    Publication date: March 30, 2023
    Inventors: Ka-Leung WONG, Hong Lok LUNG, Ho-Fai CHAU
  • Publication number: 20220401578
    Abstract: The present disclosure provides EBNA1 and LMP1 dual-targeting peptides and upconversion nanoparticles conjugates comprising the same useful as therapeutic and theranostic agents capable of targeting EBNA1 and LMP1 proteins present in Epstein-Barr virus infected cells, such as cancer.
    Type: Application
    Filed: June 11, 2021
    Publication date: December 22, 2022
    Inventors: Ka-Leung WONG, Hong Lok LUNG, Shuai ZHA, Ho-Fai CHAU
  • Patent number: 11491224
    Abstract: Provided herein are porphyrinato-lanthanide complexes useful as theranostic agents and methods of preparation and use thereof. The porphyrinato-lanthanide complexes are useful in the treatment and imaging of cancer.
    Type: Grant
    Filed: April 2, 2019
    Date of Patent: November 8, 2022
    Assignee: Hong Kong Baptist University
    Inventors: Ka Leung Wong, Wai Kwok Wong, Ho Fai Chau
  • Publication number: 20210253950
    Abstract: The invention provides luminescent lanthanide nanoparticles having simultaneously an improved brightness and an increased lifetime of the excited-state. These nanoparticles comprise terbium ions and ions of a second lanthanide, preferentially europium, and are coated with molecules of chromophore ligand bonded to the surface of the nanoparticle. The ligand is an organic molecule comprising at least one chromophore radical of formula (I) or of formula (II): wherein R is selected from H, CN group or COOH group. The phosphorescence excited-state lifetime is improved by energy transfer from surface terbium ions to core ions of the second lanthanide The nanoparticle may further comprise a carrier molecule of analytical interest covalently attached to at least one ligand molecule.
    Type: Application
    Filed: July 4, 2019
    Publication date: August 19, 2021
    Inventors: Ka-Leung Wong, Joan Goetz, Loïc Charbonniere, Niko Hildebrandt, Aline Nonat, Cyrille Charpentier, Marcelina Cardoso Dos Santos, Vjona Cifliku
  • Patent number: 11046731
    Abstract: The present disclosure relates to compounds useful in the treatment, imaging, and/or diagnosis of Epstein-Barr virus (EBV)-positive cells, such as cancer.
    Type: Grant
    Filed: January 17, 2019
    Date of Patent: June 29, 2021
    Assignee: Hong Kong Baptist University
    Inventors: Ka Leung Wong, Nai Ki Mak, Lijun Jiang
  • Patent number: 10842846
    Abstract: The present disclosure provides peptides useful as inhibitors of the dimerization interface of EBNA1. The present disclosure also provides methods for treating and imaging EBV-associated cancers.
    Type: Grant
    Filed: October 25, 2018
    Date of Patent: November 24, 2020
    Assignee: Hong Kong Baptist University
    Inventors: Ka Leung Wong, Nai Ki Mak, Lijun Jiang
  • Patent number: 10816478
    Abstract: Luminescent lanthanide complexes comprising a triazine-based ligand capable of selective detection of urinary polyamines and their methods of use in detecting and quantifying urinary polyamines as well as prostate cancer biomarkers, such as spermine. The detection of the urinary polyamines can be accomplished using colorimetric methods such as, with an ultraviolet-visible spectrometer.
    Type: Grant
    Filed: April 16, 2018
    Date of Patent: October 27, 2020
    Assignee: New Life Medicine Technology Company Limited
    Inventor: Ka Leung Wong
  • Patent number: 10787465
    Abstract: Provided herein are lanthanide complexes that exhibit specific subcellular localization to primary cilium. The lanthanide complexes provided herein are useful for imaging, tagging, and pull down of binding targets located in primary cilium.
    Type: Grant
    Filed: October 31, 2018
    Date of Patent: September 29, 2020
    Assignee: New Life Medicine Technology Company Limited
    Inventors: Ka Leung Wong, Hongguang Li, Chi Fai Chan, Rongfeng Lan
  • Patent number: 10527627
    Abstract: The present disclosure relates to urinary polyamines useful as prostate cancer biomarkers. In particular, the present disclosure provides a novel, highly-sensitive and specific, method for detecting and quantifying urinary polyamines using lanthanide complexes or citrate capped gold nanoparticles.
    Type: Grant
    Filed: October 16, 2017
    Date of Patent: January 7, 2020
    Assignee: New Life Medicine Technology Company Limited
    Inventor: Ka Leung Wong
  • Publication number: 20190382444
    Abstract: The present disclosure relates to compounds useful in the treatment, imaging, and/or diagnosis of Epstein-Barr virus (EBV)-positive cells, such as cancer.
    Type: Application
    Filed: January 17, 2019
    Publication date: December 19, 2019
    Inventors: Ka Leung WONG, Nai Ki MAK, Lijun JIANG
  • Publication number: 20190298832
    Abstract: Provided herein are porphyrinato-lanthanide complexes useful as theranostic agents and methods of preparation and use thereof. The porphyrinato-lanthanide complexes are useful in the treatment and imaging of cancer.
    Type: Application
    Filed: April 2, 2019
    Publication date: October 3, 2019
    Inventors: Ka Leung WONG, Wai Kwok WONG, Ho Fai CHAU
  • Publication number: 20190127393
    Abstract: Provided herein are lanthanide complexes that exhibit specific subcellular localization to primary cilium. The lanthanide complexes provided herein are useful for imaging, tagging, and pull down of binding targets located in primary cilium.
    Type: Application
    Filed: October 31, 2018
    Publication date: May 2, 2019
    Inventors: Ka Leung WONG, Hongguang LI, Chi Fai CHAN, Rongfeng LAN
  • Publication number: 20190060394
    Abstract: The present disclosure provides peptides useful as inhibitors of the dimerization interface of EBNA1. The present disclosure also provides methods for treating and imaging EBV-associated cancers.
    Type: Application
    Filed: October 25, 2018
    Publication date: February 28, 2019
    Inventors: Ka Leung Wong, Nai Ki Mak, Lijun Jiang
  • Patent number: 10183956
    Abstract: The present invention relates to a water-soluble, simple, stable tris(N-(tert-butyl)acetamide) cyclen-based europium complex HGEu001 which exhibits the specific subcellular localization in the primary cilium with a quantum yield as high as 10% in water and a lifetime of 0.56 ms lifetime. In particular, the present invention provides simplicity of the design and synthesis of a complex. Comprehensive studies were performed in numerous cell lines, such as HeLa, SN-K-SH and MRC5; the motif structure, HGEu002, has also been synthesized as the negative control for in vitro imaging studies. The two photon in vitro imaging were done in three dimensions to emphasize on the specific localization in primary cilium of HGEu001. This is one of the very limited examples for direct primary cilium imaging.
    Type: Grant
    Filed: May 25, 2017
    Date of Patent: January 22, 2019
    Assignee: New Life Medicine Technology Company Limited
    Inventors: Ka Leung Wong, Hongguang Li, Chi Fai Chan, Rongfeng Lan
  • Patent number: 10183027
    Abstract: The present disclosure relates to theranostic prodrugs with responsive signals in-vitro or in-vivo and uses thereof. It also relates to synthesized europium complexes for evaluating the binding with integrin ?v?3.
    Type: Grant
    Filed: September 20, 2017
    Date of Patent: January 22, 2019
    Assignee: Hong Kong Baptist University
    Inventors: Ka Leung Wong, Hongguang Li
  • Patent number: 10137115
    Abstract: This invention provides a nucleus-permeable small-molecule inhibitor, L2P4 (where L2 is 4-(4-(Diethylamino)styryl)-N-carboxymethylpyridinium chloride and P4 is an amino acid sequence comprising CAhxYFMVFGGRrRK and they were coupled through amide bond) and synthesis thereof, which effectively targets the dimerization interface of EBNA1, a critical process for the growth of EBVs and the associated tumors. The present invention also provides method of treating and imaging EBV-associated cancers.
    Type: Grant
    Filed: April 24, 2017
    Date of Patent: November 27, 2018
    Assignee: Hong Kong Baptist University
    Inventors: Ka Leung Wong, Nai Ki Mak, Lijun Jiang
  • Publication number: 20180252652
    Abstract: The present disclosure relates to urinary polyamines useful as prostate cancer biomarkers and a sensitive and specific, method for detecting and quantifying urinary polymaines using lanthanide complexes.
    Type: Application
    Filed: April 16, 2018
    Publication date: September 6, 2018
    Inventor: Ka Leung WONG