Patents by Inventor Gregory D. Davis

Gregory D. Davis 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: 11268144
    Abstract: The present disclosure provides reagents and methods for molecular proximity detection of specific endogenous nucleic acids in situ using RNA-guided nucleic acid binding proteins.
    Type: Grant
    Filed: September 23, 2016
    Date of Patent: March 8, 2022
    Assignee: Sigma-Aldrich Co. LLC
    Inventors: Gregory D. Davis, Vikas B. Palhan, Carol A. Kreader
  • Publication number: 20210388396
    Abstract: The present invention provides RNA-guided endonucleases, which are engineered for expression in eukaryotic cells or embryos, and methods of using the RNA-guided endonuclease for targeted genome modification in in eukaryotic cells or embryos. Also provided are fusion proteins, wherein each fusion protein comprises a CRISPR/Cas-like protein or fragment thereof and an effector domain. The effector domain can be a cleavage domain, an epigenetic modification domain, a transcriptional activation domain, or a transcriptional repressor domain. Also provided are methods for using the fusion proteins to modify a chromosomal sequence or regulate expression of a chromosomal sequence.
    Type: Application
    Filed: August 10, 2021
    Publication date: December 16, 2021
    Inventors: Fuqiang Chen, Gregory D. Davis
  • Publication number: 20210207173
    Abstract: The present invention provides RNA-guided endonucleases, which are engineered for expression in eukaryotic cells or embryos, and methods of using the RNA-guided endonuclease for targeted genome modification in in eukaryotic cells or embryos. Also provided are fusion proteins, wherein each fusion protein comprises a CRISPR/Cas-like protein or fragment thereof and an effector domain. The effector domain can be a cleavage domain, an epigenetic modification domain, a transcriptional activation domain, or a transcriptional repressor domain. Also provided are methods for using the fusion proteins to modify a chromosomal sequence or regulate expression of a chromosomal sequence.
    Type: Application
    Filed: July 30, 2020
    Publication date: July 8, 2021
    Inventors: Fuqiang Chen, Gregory D. Davis
  • Publication number: 20210180071
    Abstract: Compositions and methods for genome editing of Bacteroides species are provided herein. RNA-guided nucleobase modification systems are engineered to target specific loci in chromosomal DNA of a target bacteria cell, wherein the genome of the target bacterial cell can be modified.
    Type: Application
    Filed: December 17, 2020
    Publication date: June 17, 2021
    Inventors: Erik Eastlund, Zhigang Zhang, Gregory D. Davis
  • Publication number: 20210095273
    Abstract: Compositions and methods for remodeling complex populations of microbes are provided herein. RNA-guided nuclease systems are engineered to target sites in chromosomal DNA of a targeted prokaryotic, wherein the level of targeted prokaryote can be modulated in a mixed population of prokaryotes.
    Type: Application
    Filed: September 29, 2020
    Publication date: April 1, 2021
    Inventors: Erik Eastlund, Zhigang Zhang, Gregory D. Davis, Zachary Walter Beller, Jeffrey Ivan Gordon
  • Publication number: 20210079427
    Abstract: The present invention provides RNA-guided endonucleases, which are engineered for expression in eukaryotic cells or embryos, and methods of using the RNA-guided endonuclease for targeted genome modification in in eukaryotic cells or embryos. Also provided are fusion proteins, wherein each fusion protein comprises a CRISPR/Cas-like protein or fragment thereof and an effector domain. The effector domain can be a cleavage domain, an epigenetic modification domain, a transcriptional activation domain, or a transcriptional repressor domain. Also provided are methods for using the fusion proteins to modify a chromosomal sequence or regulate expression of a chromosomal sequence.
    Type: Application
    Filed: July 30, 2020
    Publication date: March 18, 2021
    Inventors: Fuqiang Chen, Gregory D. Davis
  • Publication number: 20200354752
    Abstract: Engineered Cas9 systems that utilize alternate protospacer adjacent motifs for target DNA binding, nucleic acids encoding the engineered Cas9 systems, and methods of using the engineered Cas9 systems for modifying target chromosomal sequences in eukaryotic cells.
    Type: Application
    Filed: July 30, 2020
    Publication date: November 12, 2020
    Inventors: Timothy Seebeck, Fuqiang Chen, Gregory D. Davis
  • Patent number: 10767193
    Abstract: Engineered Cas9 systems that utilize alternate protospacer adjacent motifs for target DNA binding, nucleic acids encoding the engineered Cas9 systems, and methods of using the engineered Cas9 systems for modifying target chromosomal sequences in eukaryotic cells.
    Type: Grant
    Filed: February 15, 2019
    Date of Patent: September 8, 2020
    Assignee: Sigma-Aldrich Co. LLC
    Inventors: Timothy Seebeck, Fuqiang Chen, Gregory D. Davis
  • Patent number: 10745716
    Abstract: The present invention provides RNA-guided endonucleases, which are engineered for expression in eukaryotic cells or embryos, and methods of using the RNA-guided endonuclease for targeted genome modification in eukaryotic cells or embryos. Also provided are fusion proteins, wherein each fusion protein comprises a CRISPR/Cas-like protein or fragment thereof and an effector domain. The effector domain can be a cleavage domain, an epigenetic modification domain, a transcriptional activation domain, or a transcriptional repressor domain. Also provided are methods for using the fusion proteins to modify a chromosomal sequence or regulate expression of a chromosomal sequence.
    Type: Grant
    Filed: June 21, 2016
    Date of Patent: August 18, 2020
    Assignee: Sigma-Aldrich Co. LLC
    Inventors: Fuqiang Chen, Gregory D. Davis
  • Patent number: 10731181
    Abstract: The present invention provides RNA-guided endonucleases, which are engineered for expression in eukaryotic cells or embryos, and methods of using the RNA-guided endonuclease for targeted genome modification in eukaryotic cells or embryos. Also provided are fusion proteins, wherein each fusion protein comprises a CRISPR/Cas-like protein or fragment thereof and an effector domain. The effector domain can be a cleavage domain, an epigenetic modification domain, a transcriptional activation domain, or a transcriptional repressor domain. Also provided are methods for using the fusion proteins to modify a chromosomal sequence or regulate expression of a chromosomal sequence.
    Type: Grant
    Filed: June 21, 2016
    Date of Patent: August 4, 2020
    Assignee: Sigma, Aldrich Co. LLC
    Inventors: Fuqiang Chen, Gregory D. Davis
  • Publication number: 20200140897
    Abstract: The present invention provides RNA-guided endonucleases, which are engineered for expression in eukaryotic cells or embryos, and methods of using the RNA-guided endonuclease for targeted genome modification in eukaryotic cells or embryos. Also provided are fusion proteins, wherein each fusion protein comprises a CRISPR/Cas-like protein or fragment thereof and an effector domain. The effector domain can be a cleavage domain, an epigenetic modification domain, a transcriptional activation domain, or a transcriptional repressor domain. Also provided are methods for using the fusion proteins to modify a chromosomal sequence or regulate expression of a chromosomal sequence.
    Type: Application
    Filed: October 16, 2019
    Publication date: May 7, 2020
    Applicant: SIGMA-ALDRICH CO. LLC
    Inventors: Fuqiang CHEN, Gregory D. Davis
  • Patent number: 10604752
    Abstract: Compositions and methods for using nucleosome interacting protein domains to increase accessibility of programmable DNA modification proteins to target chromosomal sequences, thereby increasing efficiency of targeted genome/epigenetic modification in eukaryotic cells.
    Type: Grant
    Filed: July 10, 2018
    Date of Patent: March 31, 2020
    Assignee: Sigma-Aldrich Co. LLC
    Inventors: Fuqiang Chen, Xiao Ding, Yongmei Feng, Gregory D. Davis
  • Publication number: 20200002722
    Abstract: The present invention provides methods for modifying chromosomal sequences. In particular, methods are provided for using RNA-guided endonucleases or modified RNA-guided endonucleases to modify targeted chromosomal sequences.
    Type: Application
    Filed: September 3, 2019
    Publication date: January 2, 2020
    Inventors: Fuqiang Chen, Gregory D. Davis
  • Publication number: 20190316102
    Abstract: Paired CRISPR nickase ribonucleoproteins engineered to target immune-related genomic loci and methods of using said ribonucleoproteins to modify the immune-related genomic loci.
    Type: Application
    Filed: April 12, 2019
    Publication date: October 17, 2019
    Applicant: SIGMA-ALDRICH CO. LLC
    Inventors: Qingzhou Ji, Gregory D. Davis, Jacob T. Lamberth
  • Publication number: 20190271041
    Abstract: The present disclosure provides genetically engineered cell lines comprising chromosomally integrated synthetic sequences having predetermined epigenetic modifications, wherein a predetermined epigenetic modification is correlated with a known diagnosis, prognosis or level of sensitivity to a disease treatment. Also provided are kits comprising said epigenetically modified synthetic nucleic acids or cells comprising said epigenetically modified synthetic nucleic acids that can be used as reference standards for predicting responsiveness to therapeutic treatments, diagnosing diseases, or predicting disease prognosis.
    Type: Application
    Filed: January 14, 2019
    Publication date: September 5, 2019
    Inventors: Gregory D. Davis, Qiaohua Kang
  • Publication number: 20190249200
    Abstract: Engineered Cas9 systems that utilize alternate protospacer adjacent motifs for target DNA binding, nucleic acids encoding said engineered Cas9 systems, and methods of using said engineered Cas9 systems for modifying target chromosomal sequences in eukaryotic cells.
    Type: Application
    Filed: February 15, 2019
    Publication date: August 15, 2019
    Inventors: Timothy Seebeck, Fuqiang Chen, Gregory D. Davis
  • Publication number: 20190202856
    Abstract: CRISPR proteins engineered to form covalent bonds with 5? phosphates in target nucleic acids and methods of using CRISPR systems comprising said engineered CRISPR proteins to covalently tag nucleic acids.
    Type: Application
    Filed: December 14, 2018
    Publication date: July 4, 2019
    Inventors: Gregory D. Davis, Daniel Taglicht, Fuqiang Chen
  • Publication number: 20190017042
    Abstract: Compositions and methods for using nucleosome interacting protein domains to increase accessibility of programmable DNA modification proteins to target chromosomal sequences, thereby increasing efficiency of targeted genome/epigenetic modification in eukaryotic cells.
    Type: Application
    Filed: July 10, 2018
    Publication date: January 17, 2019
    Inventors: Fuqiang Chen, Xiao Ding, Yongmei Feng, Gregory D. Davis
  • Publication number: 20180340221
    Abstract: The present disclosure provides reagents and methods for molecular proximity detection of specific endogenous nucleic acids in situ using RNA-guided nucleic acid binding proteins.
    Type: Application
    Filed: September 23, 2016
    Publication date: November 29, 2018
    Applicant: SIGMA-ALDRICH CO. LLC
    Inventors: Gregory D Davis, Vikas B Palhan, Carol A. Kreader
  • Publication number: 20180135073
    Abstract: The present invention provides methods for modifying chromosomal sequences. In particular, methods are provided for using RNA-guided endonucleases or modified RNA-guided endonucleases to modify targeted chromosomal sequences.
    Type: Application
    Filed: July 18, 2017
    Publication date: May 17, 2018
    Inventors: Fuqiang Chen, Gregory D. Davis