Patents by Inventor Yexun Wang

Yexun Wang 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: 20240052408
    Abstract: The present disclosure provides methods, sets of substantially complementary double-stranded adapters, and kits for performing nucleic acid sequencing. The substantial complementary double-stranded adapters comprise fully complementary molecular tag regions but one or more mismatches in other regions. Such adapters are ligated to double-stranded target nucleic acids, the obtained ligation products are amplified, and the generated amplification products are sequenced. The methods according to the present disclosure allow both strands of double-stranded target nucleic acids to be sequenced from one end of the target nucleic acids.
    Type: Application
    Filed: October 12, 2023
    Publication date: February 15, 2024
    Inventor: Yexun Wang
  • Patent number: 11821028
    Abstract: The present disclosure provides methods, sets of substantially complementary double-stranded adapters, and kits for performing nucleic acid sequencing. The substantial complementary double-stranded adapters comprise fully complementary molecular tag regions but one or more mismatches in other regions. Such adapters are ligated to double-stranded target nucleic acids, the obtained ligation products are amplified, and the generated amplification products are sequenced. The methods according to the present disclosure allow both strands of double-stranded target nucleic acids to be sequenced from one end of the target nucleic acids.
    Type: Grant
    Filed: July 11, 2017
    Date of Patent: November 21, 2023
    Assignee: QIAGEN Sciences, LLP
    Inventor: Yexun Wang
  • Publication number: 20230235393
    Abstract: The invention relates to methods of enriching for target nucleic acid molecules, More particularly, the methods of enriching for target nucleic acid molecules comprise binding target nucleic acid molecules in a sample with one or more first target endonucleases that are specific to a first locus of a target region of the target nucleic acid molecules, separating the target nucleic acid molecules from nontarget nucleic acid molecules in the sample, and binding the separated target nucleic acid molecules with one or more second target endonucleases that are specific to a second locus of the target region of the target nucleic acid molecules, and uses thereof.
    Type: Application
    Filed: June 11, 2021
    Publication date: July 27, 2023
    Inventors: Yexun WANG, Quan PENG, Nathan BLEWETT
  • Publication number: 20220364165
    Abstract: The present disclosure provides primers, primer sets, kits and methods for multiple displacement amplification, especially in combination with nucleic acid sequencing. The primers comprise self-complementary sequences at their 5? termini and random or semi-random sequences at their 3? termini. Use of such primers facilitates handling of multiple samples, increases sequence coverage uniformity, and improves sequencing error corrections.
    Type: Application
    Filed: June 24, 2022
    Publication date: November 17, 2022
    Inventors: Yexun WANG, Quan PENG
  • Patent number: 11401548
    Abstract: The present disclosure provides primers, primer sets, kits and methods for multiple displacement amplification, especially in combination with nucleic acid sequencing. The primers comprise self-complementary sequences at their 5? termini and random or semi-random sequences at their 3? termini. Use of such primers facilitates handling of multiple samples, increases sequence coverage uniformity, and improves sequencing error corrections.
    Type: Grant
    Filed: March 20, 2017
    Date of Patent: August 2, 2022
    Assignee: QIAGEN Sciences, LLC
    Inventors: Yexun Wang, Quan Peng
  • Publication number: 20220127600
    Abstract: The invention relates to methods of detecting analytes in samples by generating analyte-based DNA libraries amenable for sequencing. The methods include the use of proximity probe pairs, each probe comprising an analyte binding domain and oligonucleotide domain. The methods further provide for integrated DNA and RNA library preparations and methods of making and uses thereof. The invention also provides compositions useful in the methods.
    Type: Application
    Filed: January 9, 2020
    Publication date: April 28, 2022
    Inventors: Yexun WANG, Quan PENG
  • Publication number: 20220017954
    Abstract: The invention relates to methods for preparing cDNA samples for RNA sequencing using random priming oligonucleotides comprising a cell barcode (cID), a unique molecular index (UMI), and a random sequence region, and performing a reverse transcription reaction (RT). The invention also relates to cDNA samples prepared by the methods and uses thereof.
    Type: Application
    Filed: December 6, 2019
    Publication date: January 20, 2022
    Inventors: Yexun WANG, Marcus LEWIS
  • Patent number: 11155813
    Abstract: The present disclosure provides oligonucleotides that comprise semi-random barcode sequences. Such oligonucleotides may be incorporated into reverse transcription primers, PCR primers, or portions of sequencing adapters in preparing sequencing libraries. The resulting sequencing libraries can be used for accurate sequencing, including DNA or RNA counting and mutation detection. Methods and kits for preparing sequencing adapters and sequencing libraries are also provided.
    Type: Grant
    Filed: March 7, 2019
    Date of Patent: October 26, 2021
    Assignee: QIAGEN Sciences, LLC
    Inventors: Yexun Wang, Zhong Wu
  • Publication number: 20210301333
    Abstract: The present disclosure provides methods and kits for highly multiplex single primer extensions using a MutS protein and Mg2+ at a concentration higher than that in a typical PCR reaction. Also disclosed is the use of such methods and kits in next generation sequencing.
    Type: Application
    Filed: January 29, 2021
    Publication date: September 30, 2021
    Inventors: Yexun Wang, Quan Peng
  • Patent number: 10941438
    Abstract: The present disclosure provides methods and kits for highly multiplex single primer extensions using a MutS protein and Mg2+ at a concentration higher than that in a typical PCR reaction. Also disclosed is the use of such methods and kits in next generation sequencing.
    Type: Grant
    Filed: October 14, 2016
    Date of Patent: March 9, 2021
    Assignee: QIAGEN Sciences, LLC
    Inventors: Yexun Wang, Quan Peng
  • Publication number: 20210024920
    Abstract: The invention relates to integrated DNA and RNA library preparations and methods of making and uses thereof, wherein the DNA molecules are labelled with a tag identifying the molecule as being a DNA molecule and the RNA molecules are labelled with a tag identifying the molecule as being a RNA molecule. The methods do not require physical separation of DNA and RNA. The methods output two separate libraries from DNA and RNA, respectively, which helps flexible manipulation on downstream sequencing platforms. The application also claims the DNA library and the cDNA library produced by the method and the DNA tag and the RNA tag used in the method.
    Type: Application
    Filed: March 26, 2019
    Publication date: January 28, 2021
    Inventors: Yexun WANG, Quan PENG, Daniel KIM
  • Publication number: 20200354773
    Abstract: The present disclosure provides methods and kits for performing high multiplex PCR using molecular barcodes. The methods disclosed herein separately extend a set of primers (BC primers) that each comprise a molecular barcode and a target-specific sequence, and amplify the resulting extension products using another set of primers (LA primers) that each comprise another target-specific sequence. Such methods avoid barcode resampling and suppress primer dimers in traditional high multiplex PCR.
    Type: Application
    Filed: July 28, 2020
    Publication date: November 12, 2020
    Inventors: Yexun Wang, Quan Peng
  • Patent number: 10760120
    Abstract: The present disclosure provides methods and kits for performing high multiplex PCR using molecular barcodes. The methods disclosed herein separately extend a set of primers (BC primers) that each comprise a target-specific sequence, a molecular barcode and a universal sequence, and amplify the resulting extension products using another set of primers (LA primers) that each comprise another target-specific sequence and a universal sequence. The methods may further comprise amplification using universal primers (preferably comprising an adapter).
    Type: Grant
    Filed: January 21, 2016
    Date of Patent: September 1, 2020
    Assignee: QIAGEN SCIENCES, LLC
    Inventors: Yexun Wang, Quan Peng
  • Patent number: 10544447
    Abstract: The present disclosure provides methods, arrays and kits for assessing the quality of genomic DNA samples, especially those obtained from formalin-fixed paraffin-embedded (FFPE) samples. The methods, arrays and kits provided herein use primer pairs specific to regions in the genomes of the organisms from which genomic DNA samples are obtained that have identical or nearly identical copies distributed across multiple chromosomes.
    Type: Grant
    Filed: April 29, 2019
    Date of Patent: January 28, 2020
    Assignee: QIAGEN Sciences, LLC
    Inventors: Yexun Wang, John DiCarlo, Vikram Devgan, Qiong Jiang, Quan Peng
  • Publication number: 20190249227
    Abstract: The present disclosure provides methods, arrays and kits for assessing the quality of genomic DNA samples, especially those obtained from formalin-fixed paraffin-embedded (FFPE) samples. The methods, arrays and kits provided herein use primer pairs specific to regions in the genomes of the organisms from which genomic DNA samples are obtained that have identical or nearly identical copies distributed across multiple chromosomes.
    Type: Application
    Filed: April 29, 2019
    Publication date: August 15, 2019
    Inventors: Yexun Wang, John DiCarlo, Vikram Devgan, Qiong Jiang, Quan Peng
  • Publication number: 20190241946
    Abstract: The present disclosure provides methods, sets of substantially complementary double-stranded adapters, and kits for performing nucleic acid sequencing. The substantial complementary double-stranded adapters comprise fully complementary molecular tag regions but one or more mismatches in other regions. Such adapters are ligated to double-stranded target nucleic acids, the obtained ligation products are amplified, and the generated amplification products are sequenced. The methods according to the present disclosure allow both strands of double-stranded target nucleic acids to be sequenced from one end of the target nucleic acids.
    Type: Application
    Filed: July 11, 2017
    Publication date: August 8, 2019
    Inventor: Yexun Wang
  • Publication number: 20190194651
    Abstract: The present disclosure provides oligonucleotides that comprise semi-random barcode sequences. Such oligonucleotides may be incorporated into reverse transcription primers, PCR primers, or portions of sequencing adapters in preparing sequencing libraries. The resulting sequencing libraries can be used for accurate sequencing, including DNA or RNA counting and mutation detection. Methods and kits for preparing sequencing adapters and sequencing libraries are also provided.
    Type: Application
    Filed: March 7, 2019
    Publication date: June 27, 2019
    Inventors: Yexun Wang, Zhong Wu
  • Patent number: 10316351
    Abstract: The present disclosure provides methods, arrays and kits for assessing the quality of genomic DNA samples, especially those obtained from formalin-fixed paraffin-embedded (FFPE) samples. The methods, arrays and kits provided herein use primer pairs specific to regions in the genomes of the organisms from which genomic DNA samples are obtained that have identical or nearly identical copies distributed across multiple chromosomes.
    Type: Grant
    Filed: March 13, 2018
    Date of Patent: June 11, 2019
    Assignee: QIAGEN Sciences, LLC
    Inventors: Yexun Wang, John DiCarlo, Vikram Devgan, Qiong Jiang, Quan Peng
  • Publication number: 20190112647
    Abstract: The present disclosure provides primers, primer sets, kits and methods for multiple displacement amplification, especially in combination with nucleic acid sequencing. The primers comprise self-complementary sequences at their 5? termini and random or semi-random sequences at their 3? termini. Use of such primers facilitates handling of multiple samples, increases sequence coverage uniformity, and improves sequencing error corrections.
    Type: Application
    Filed: March 20, 2017
    Publication date: April 18, 2019
    Inventors: Yexun WANG, Quan PENG
  • Publication number: 20190062822
    Abstract: The present disclosure provides methods and kits for highly multiplex single primer extensions using a MutS protein and Mg2+ at a concentration higher than that in a typical PCR reaction. Also disclosed is the use of such methods and kits in next generation sequencing.
    Type: Application
    Filed: October 14, 2016
    Publication date: February 28, 2019
    Inventors: Yexun Wang, Quan Peng