Patents by Inventor Chunming Ding

Chunming Ding 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: 11898208
    Abstract: The present invention concerns a method for the detection or monitoring of cancer using a biological sample selected from blood, plasma, serum, saliva, urine from an individual, said method comprising: (a) obtaining DNA from the said biological sample; (b) digesting the DNA sample with one or more methylation-sensitive restriction enzymes; (c) quantifying or detecting a DNA sequence of interest after step (b), wherein the target sequence of interest contains at least two methylation-sensitive restriction enzyme recognition sites; and (d) comparing the level of the DNA sequence from the individual to a normal standard, to detect, prognosticate or monitor cancer.
    Type: Grant
    Filed: August 29, 2019
    Date of Patent: February 13, 2024
    Assignee: The Chinese University of Hong Kong
    Inventors: Yuk-Ming Dennis Lo, Kwan Chee Allen Chan, Chunming Ding
  • Patent number: 11597977
    Abstract: The present invention relates to new methods for diagnosing a pregnancy-associated disorder by analyzing fetal DNA present in the mother's blood. More specifically, this invention relies on the discovery that the maspin gene is differentially methylated in fetal DNA and in maternal DNA and provides these new diagnostic methods, which distinguish fetal DNA from maternal DNA and detect prenatal disorders based on abnormalities in fetal DNA level and methylation status.
    Type: Grant
    Filed: March 2, 2020
    Date of Patent: March 7, 2023
    Assignee: The Chinese University of Hong Kong
    Inventors: Yuk Ming Dennis Lo, Wai Kwun Rossa Chiu, Stephen Siu Chung Chim, Yu-Kwan Tong, Chunming Ding
  • Publication number: 20200270694
    Abstract: The present invention relates to new methods for diagnosing a pregnancy-associated disorder by analyzing fetal DNA present in the mother's blood. More specifically, this invention relies on the discovery that the maspin gene is differentially methylated in fetal DNA and in maternal DNA and provides these new diagnostic methods, which distinguish fetal DNA from maternal DNA and detect prenatal disorders based on abnormalities in fetal DNA level and methylation status.
    Type: Application
    Filed: March 2, 2020
    Publication date: August 27, 2020
    Inventors: YUK MING DENNIS LO, Wai Kwun Rossa Chiu, Stephen Siu Chung Chim, Yu-Kwan Tong, Chunming Ding
  • Patent number: 10604808
    Abstract: The present invention relates to new methods for diagnosing a pregnancy-associated disorder by analyzing fetal DNA present in the mother's blood. More specifically, this invention relies on the discovery that the maspin gene is differentially methylated in fetal DNA and in maternal DNA and provides these new diagnostic methods, which distinguish fetal DNA from maternal DNA and detect prenatal disorders based on abnormalities in fetal DNA level and methylation status.
    Type: Grant
    Filed: December 14, 2017
    Date of Patent: March 31, 2020
    Assignee: The Chinese University of Hong Kong
    Inventors: Yuk Ming Dennis Lo, Rossa Wai Kwun Chiu, Stephen Siu Chung Chim, Yu-Kwan Tong, Chunming Ding
  • Publication number: 20200071771
    Abstract: The present invention concerns a method for the detection or monitoring of cancer using a biological sample selected from blood, plasma, serum, saliva, urine from an individual, said method comprising: (a) obtaining DNA from the said biological sample; (b) digesting the DNA sample with one or more methylation-sensitive restriction enzymes; (c) quantifying or detecting a DNA sequence of interest after step (b), wherein the target sequence of interest contains at least two methylation-sensitive restriction enzyme recognition sites; and (d) comparing the level of the DNA sequence from the individual to a normal standard, to detect, prognosticate or monitor cancer.
    Type: Application
    Filed: August 29, 2019
    Publication date: March 5, 2020
    Inventors: Yuk-Ming Dennis LO, Kwan Chee Allen CHAN, Chunming DING
  • Patent number: 10435754
    Abstract: The present invention concerns a method for the detection or monitoring of cancer using a biological sample selected from blood, plasma, serum, saliva, urine from an individual, said method comprising: (a) obtaining DNA from the said biological sample; (b) digesting the DNA sample with one or more methylation-sensitive restriction enzymes; (c) quantifying or detecting a DNA sequence of interest after step (b), wherein the target sequence of interest contains at least two methylation-sensitive restriction enzyme recognition sites; and (d) comparing the level of the DNA sequence from the individual to a normal standard, to detect, prognosticate or monitor cancer.
    Type: Grant
    Filed: May 23, 2016
    Date of Patent: October 8, 2019
    Assignee: The Chinese University Of Hong Kong
    Inventors: Yuk Ming Dennis Lo, Kwan Chee Allen Chan, Chunming Ding
  • Patent number: 10329606
    Abstract: Disclosed herein are methods and kits for selectively amplifying, detecting or quantifying a DNA fragment with a specific end sequence, especially generated following restriction enzyme digestion. This method can be used, for example, to detect a hypomethylated DNA fragment. This methods and kits are especially useful in detecting or quantifying a hypomethylated fetal DNA fragment in a maternal plasma sample containing a corresponding hypermethylated maternal DNA fragment.
    Type: Grant
    Filed: April 29, 2014
    Date of Patent: June 25, 2019
    Assignee: The Chinese University of Hong Kong
    Inventors: Yuk Ming Dennis Lo, Yu Kwan Tong, Wai Kwun Rossa Chiu, Chunming Ding
  • Publication number: 20180155791
    Abstract: The present invention relates to new methods for diagnosing a pregnancy-associated disorder by analyzing fetal DNA present in the mother's blood. More specifically, this invention relies on the discovery that the maspin gene is differentially methylated in fetal DNA and in maternal DNA and provides these new diagnostic methods, which distinguish fetal DNA from maternal DNA and detect prenatal disorders based on abnormalities in fetal DNA level and methylation status.
    Type: Application
    Filed: December 14, 2017
    Publication date: June 7, 2018
    Inventors: Yuk Ming Dennis LO, Rossa Wai Kwun Chiu, Stephen Siu Chung Chim, Yu-Kwan Tong, Chunming Ding
  • Patent number: 9862999
    Abstract: The present invention relates to new methods for diagnosing a pregnancy-associated disorder by analyzing fetal DNA present in the mother's blood. More specifically, this invention relies on the discovery that the maspin gene is differentially methylated in fetal DNA and in maternal DNA and provides these new diagnostic methods, which distinguish fetal DNA from maternal DNA and detect prenatal disorders based on abnormalities in fetal DNA level and methylation status.
    Type: Grant
    Filed: February 1, 2016
    Date of Patent: January 9, 2018
    Assignee: The Chinese University of Hong Kong
    Inventors: Yuk Ming Dennis Lo, Wai Kwun Rossa Chiu, Stephen Siu-Chung Chim, Yu-Kwan Tong, Chunming Ding
  • Publication number: 20170101685
    Abstract: The present invention concerns a method for the detection or monitoring of cancer using a biological sample selected from blood, plasma, serum, saliva, urine from an individual, said method comprising: (a) obtaining DNA from the said biological sample; (b) digesting the DNA sample with one or more methylation-sensitive restriction enzymes; (c) quantifying or detecting a DNA sequence of interest after step (b), wherein the target sequence of interest contains at least two methylation-sensitive restriction enzyme recognition sites; and (d) comparing the level of the DNA sequence from the individual to a normal standard, to detect, prognosticate or monitor cancer.
    Type: Application
    Filed: May 23, 2016
    Publication date: April 13, 2017
    Inventors: YUK MING DENNIS LO, Kwan Chee Allen Chan, Chunming Ding
  • Publication number: 20160258018
    Abstract: The present invention relates to new methods for diagnosing a pregnancy-associated disorder by analyzing fetal DNA present in the mother's blood. More specifically, this invention relies on the discovery that the maspin gene is differentially methylated in fetal DNA and in maternal DNA and provides these new diagnostic methods, which distinguish fetal DNA from maternal DNA and detect prenatal disorders based on abnormalities in fetal DNA level and methylation status.
    Type: Application
    Filed: February 1, 2016
    Publication date: September 8, 2016
    Inventors: Yuk Ming Dennis Lo, Wai Kwun Rossa Chiu, Stephen Siu-Chung Chim, Yu-Kwan Tong, Chunming Ding
  • Patent number: 9376714
    Abstract: The present invention is directed to a method for detecting and quantifying rare mutations in a nucleic acid sample. The nucleic acid molecules under investigation can be either DNA or RNA. The rare mutation can be any type of functional or non-functional nucleic acid change or mutation, such as deletion, insertion, translocation, inversion, one or more base substitution or polymorphism. Therefore, the methods of the present invention are useful in detection of rare mutations in, for example, diagnostic, prognostic and follow-up applications, when the targets are rare known nucleic acid variants mixed in with the wildtype or the more common nucleic acid variant(s).
    Type: Grant
    Filed: March 6, 2012
    Date of Patent: June 28, 2016
    Assignee: Trustees of Boston University
    Inventors: Charles R Cantor, Chunming Ding
  • Patent number: 9371566
    Abstract: The present invention concerns a method for the detection or monitoring of cancer using a biological sample selected from blood, plasma, serum, saliva, urine from an individual, said method comprising: (a) obtaining DNA from the said biological sample; (b) digesting the DNA sample with one or more methylation-sensitive restriction enzymes; (c) quantifying or detecting a DNA sequence of interest after step (b), wherein the target sequence of interest contains at least two methylation-sensitive restriction enzyme recognition sites; and (d) comparing the level of the DNA sequence from the individual to a normal standard, to detect, prognosticate or monitor cancer.
    Type: Grant
    Filed: September 26, 2007
    Date of Patent: June 21, 2016
    Assignee: The Chinese University of Hong Kong
    Inventors: Yuk Ming Dennis Lo, Kwan Chee Allen Chan, Chunming Ding
  • Publication number: 20150275300
    Abstract: Disclosed is an isolated biomarker/biomarker region. Also disclosed are isolated biomarker/biomarker regions for detecting trisomy 21, methods of determining the likelihood of a foetus to suffer from a specific disease using the biomarker/biomarker region, a kit and a method of determining the methylation levels of a biomarker/biomarker region.
    Type: Application
    Filed: September 26, 2013
    Publication date: October 1, 2015
    Applicant: Agency for Science, Technology and Research
    Inventors: Chunming Ding, Shengnan Jin, Yew Kok Lee, Seow Heong Yeo
  • Patent number: 8927216
    Abstract: This application describes the discovery that, in a pregnant woman, certain genes (such as RASSF1A, APC, CASP8, RARB, SCGB3A1, DAB2IP, PTPN6, THY1, TMEFF2, and PYCARD) originated from a fetus are highly methylated, whereas the same genes of maternal origin are unmethylated. This discovery allows the easy detection of one or more of these methylated fetal genes in a biological sample from a pregnant woman, serving as a universal indicator of the presence of fetal DNA in the sample. These fetal methylation markers are particularly useful as positive controls for a non-invasive analytical process during which the quality and quantity of fetal DNA are monitored. These newly identified fetal markers can also be measured directly for diagnosis of certain pregnancy-related conditions.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: January 6, 2015
    Assignee: The Chinese University of Hong Kong
    Inventors: Yuk-Ming Dennis Lo, Rossa Wai Kwun Chiu, Stephen Siu Chung Chim, Chunming Ding, Kwan Chee Chan, Hing Nam Ivy Wong, Ka Chun Ryan Yuen
  • Publication number: 20140302506
    Abstract: Disclosed herein are methods and kits for selectively amplifying, detecting or quantifying a DNA fragment with a specific end sequence, especially generated following restriction enzyme digestion. This method can be used, for example, to detect a hypomethylated DNA fragment. This methods and kits are especially useful in detecting or quantifying a hypomethylated fetal DNA fragment in a maternal plasma sample containing a corresponding hypermethylated maternal DNA fragment.
    Type: Application
    Filed: April 29, 2014
    Publication date: October 9, 2014
    Applicant: The Chinese University of Hong Kong
    Inventors: Yuk Ming Dennis Lo, Yu Kwan Tong, Wai Kwun Rossa Chiu, Chunming Ding
  • Publication number: 20140272975
    Abstract: The present invention concerns a method for the detection or monitoring of cancer using a biological sample selected from blood, plasma, serum, saliva, urine from an individual, said method comprising: (a) obtaining DNA from the said biological sample; (b) digesting the DNA sample with one or more methylation-sensitive restriction enzymes; (c) quantifying or detecting a DNA sequence of interest after step (b), wherein the target sequence of interest contains at least two methylation-sensitive restriction enzyme recognition sites; and (d) comparing the level of the DNA sequence from the individual to a normal standard, to detect, prognosticate or monitor cancer.
    Type: Application
    Filed: May 22, 2014
    Publication date: September 18, 2014
    Applicant: THE CHINESE UNIVERSITY OF HONG KONG
    Inventors: Yuk Ming Dennis LO, Kwan Chee Allen CHAN, Chunming DING
  • Patent number: 8748100
    Abstract: Disclosed herein are methods and kits for selectively amplifying, detecting or quantifying a DNA fragment with a specific end sequence, especially generated following restriction enzyme digestion. This method can be used, for example, to detect a hypomethylated DNA fragment. This methods and kits are especially useful in detecting or quantifying a hypomethylated fetal DNA fragment in a maternal plasma sample containing a corresponding hypermethylated maternal DNA fragment.
    Type: Grant
    Filed: August 30, 2007
    Date of Patent: June 10, 2014
    Assignee: The Chinese University of Hong Kong
    Inventors: Yuk Ming Dennis Lo, Yu Kwan Tong, Wai Kwun Rossa Chiu, Chunming Ding
  • Patent number: 8501443
    Abstract: The present invention provides an efficient way for high throughput haplotype analysis. Several polymorphic nucleic acid markers, such as SNPs, can be simultaneously and reliably determined through multiplex PCR of single nucleic acid molecules in several parallel single molecule dilutions and the consequent statistical analysis of the results from these parallel single molecule multiplex PCR reactions results in reliable determination of haplotypes present in the subject. The nucleic acid markers can be of any distance to each other on the chromosome. In addition, an approach wherein overlapping DNA markers are analyzed can be used to link smaller haplotypes into larger haplotypes. Consequently, the invention provides a powerful new tool for diagnostic haplotyping and identifying novel haplotypes.
    Type: Grant
    Filed: August 2, 2012
    Date of Patent: August 6, 2013
    Assignee: Trustees of Boston University
    Inventors: Charles R Cantor, Chunming Ding
  • Patent number: 8435764
    Abstract: Disclosed is a method for the detection of virus variations. Disclosed also is a method for the treatment of virus infection in a subject based on the detection of virus variations. Additionally, a kit is provided for the detection of virus variations.
    Type: Grant
    Filed: May 4, 2010
    Date of Patent: May 7, 2013
    Assignees: The Chinese University of HongKong, The Third People's Hospital of Shenzhen
    Inventors: Chunming Ding, Ju Luan, Boping Zhou, Jing Yuan, Xinchun Chen, Hongmei Zhang