Patents by Inventor Assaf Rotem

Assaf Rotem 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: 11952622
    Abstract: Methods for analyzing DNA-containing samples are provided. The methods can comprise isolating a single genomic equivalent of DNA from the DNA-containing sample to provide a single isolated DNA molecule. The single isolated DNA molecule can be subjected to amplification conditions in the presence of one or more sets of unique molecularly tagged primers to provide one or more amplicons. Any spurious allelic sequences generated during the amplification process are tagged with an identical molecular tag. The methods can also include a step of determining the sequence of the one or more amplicons, in which the majority sequence for each code is selected as the sequence of the single original encapsulated target. The DNA-containing sample can be a forensic sample (e.g., mixed contributor sample), a fetal genetic screening sample, or a biological cell.
    Type: Grant
    Filed: July 15, 2014
    Date of Patent: April 9, 2024
    Assignee: The Johns Hopkins University
    Inventors: Andrew B. Feldman, Jeffrey S. Lin, David Weitz, Assaf Rotem
  • Publication number: 20230051239
    Abstract: Described herein are compositions of hydrogels and methods of use thereof.
    Type: Application
    Filed: December 31, 2020
    Publication date: February 16, 2023
    Inventors: Assaf Rotem, Ellen Lovisa Larsdotter Afzelius, Gang Hu, Joanna Swain, Ohad Yosefson, Benjamin Peter Roscoe, Peter Lyubomirov Rogov, Harsh Jayeshkumar Vaidya
  • Publication number: 20220090297
    Abstract: The disclosure relates to peptide libraries and uses thereof.
    Type: Application
    Filed: January 3, 2020
    Publication date: March 24, 2022
    Inventors: Joanna Feltham Swain, Ellen Lovisa Larsdotter Afzelius, William Michael Gordon, Christian B. Matranga, Assaf Rotem, Gang Hu
  • Publication number: 20210355535
    Abstract: The present invention generally relates to microfluidics and/or epigenetic sequencing. In one set of embodiments, cells contained within a plurality of microfluidic droplets are lysed and the DNA (e.g., from nucleosomes) within the droplets are labeled, e.g., with adapters containing an identification sequence. The adapters may also contain other sequences, e.g., restriction sites, primer sites, etc., to assist with later analysis. After labeling with adapters, the DNA from the different cells may be combined and analyzed, e.g., to determine epigenetic information about the cells. For example, the DNA may be separated on the basis of certain modifications (e.g., methylation), and the DNA from the separated nucleosomes may be sequenced using techniques such as chromatin immunoprecipitation (“CUP”). In some cases, the DNA sequences may also be aligned with genomes, e.g., to determine which portions of the genome were epigenetically modified, e.g., via methylation.
    Type: Application
    Filed: May 25, 2021
    Publication date: November 18, 2021
    Applicants: President and Fellows of Harvard College, The General Hospital Corporation
    Inventors: David Weitz, Assaf Rotem, Oren Ram, Bradley E. Bernstein
  • Patent number: 11047003
    Abstract: The present invention generally relates to microfluidics and/or epigenetic sequencing. In one set of embodiments, cells contained within a plurality of microfluidic droplets are lysed and the DNA (e.g., from nucleosomes) within the droplets are labeled, e.g., with adapters containing an identification sequence. The adapters may also contain other sequences, e.g., restriction sites, primer sites, etc., to assist with later analysis. After labeling with adapters, the DNA from the different cells may be combined and analyzed, e.g., to determine epigenetic information about the cells. For example, the DNA may be separated on the basis of certain modifications (e.g., methylation), and the DNA from the separated nucleosomes may be sequenced using techniques such as chromatin immunoprecipitation (“ChIP”). In some cases, the DNA sequences may also be aligned with genomes, e.g., to determine which portions of the genome were epigenetically modified, e.g., via methylation.
    Type: Grant
    Filed: August 7, 2017
    Date of Patent: June 29, 2021
    Assignees: The General Hospital Corporation, President and Fellows of Harvard College
    Inventors: Assaf Rotem, Oren Ram, Bradley E. Bernstein, David A. Weitz
  • Patent number: 11001883
    Abstract: The present invention generally relates to microfluidics and/or epigenetic sequencing. In one set of embodiments, cells contained within a plurality of microfluidic droplets are lysed and the DNA (e.g., from nucleosomes) within the droplets are labeled, e.g., with adapters containing an identification sequence. The adapters may also contain other sequences, e.g., restriction sites, primer sites, etc., to assist with later analysis. After labeling with adapters, the DNA from the different cells may be combined and analyzed, e.g., to determine epigenetic information about the cells. For example, the DNA may be separated on the basis of certain modifications (e.g., methylation), and the DNA from the separated nucleosomes may be sequenced using techniques such as chromatin immunoprecipitation (“ChIP”). In some cases, the DNA sequences may also be aligned with genomes, e.g., to determine which portions of the genome were epigenetically modified, e.g., via methylation.
    Type: Grant
    Filed: September 5, 2014
    Date of Patent: May 11, 2021
    Assignees: The General Hospital Corporation, President and Fellows of Harvard College
    Inventors: Assaf Rotem, Oren Ram, Bradley E. Bernstein, David A. Weitz
  • Publication number: 20180265922
    Abstract: The present invention generally relates to microfluidics and/or epigenetic sequencing. In one set of embodiments, cells contained within a plurality of microfluidic droplets are lysed and the DNA (e.g., from nucleosomes) within the droplets are labeled, e.g., with adapters containing an identification sequence. The adapters may also contain other sequences, e.g., restriction sites, primer sites, etc., to assist with later analysis. After labeling with adapters, the DNA from the different cells may be combined and analyzed, e.g., to determine epigenetic information about the cells. For example, the DNA may be separated on the basis of certain modifications (e.g., methylation), and the DNA from the separated nucleosomes may be sequenced using techniques such as chromatin immunoprecipitation (“ChIP”). In some cases, the DNA sequences may also be aligned with genomes, e.g., to determine which portions of the genome were epigenetically modified, e.g., via methylation.
    Type: Application
    Filed: April 27, 2018
    Publication date: September 20, 2018
    Inventors: David A. Weitz, Assaf Rotem, Oren Ram, Bradley E. Bernstein
  • Publication number: 20180155778
    Abstract: The present invention generally relates to microfluidics and/or epigenetic sequencing. In one set of embodiments, cells contained within a plurality of microfluidic droplets are lysed and the DNA (e.g., from nucleosomes) within the droplets are labeled, e.g., with adapters containing an identification sequence. The adapters may also contain other sequences, e.g., restriction sites, primer sites, etc., to assist with later analysis. After labeling with adapters, the DNA from the different cells may be combined and analyzed, e.g., to determine epigenetic information about the cells. For example, the DNA may be separated on the basis of certain modifications (e.g., methylation), and the DNA from the separated nucleosomes may be sequenced using techniques such as chromatin immunoprecipitation (“ChIP”). In some cases, the DNA sequences may also be aligned with genomes, e.g., to determine which portions of the genome were epigenetically modified, e.g., via methylation.
    Type: Application
    Filed: December 8, 2017
    Publication date: June 7, 2018
    Inventors: David A. Weitz, Assaf Rotem, Oren Ram, Bradley E. Bernstein
  • Publication number: 20180155777
    Abstract: The present invention generally relates to microfluidics and/or epigenetic sequencing. In one set of embodiments, cells contained within a plurality of microfluidic droplets are lysed and the DNA (e.g., from nucleosomes) within the droplets are labeled, e.g., with adapters containing an identification sequence. The adapters may also contain other sequences, e.g., restriction sites, primer sites, etc., to assist with later analysis. After labeling with adapters, the DNA from the different cells may be combined and analyzed, e.g., to determine epigenetic information about the cells. For example, the DNA may be separated on the basis of certain modifications (e.g., methylation), and the DNA from the separated nucleosomes may be sequenced using techniques such as chromatin immunoprecipitation (“ChIP”). In some cases, the DNA sequences may also be aligned with genomes, e.g., to determine which portions of the genome were epigenetically modified, e.g., via methylation.
    Type: Application
    Filed: December 8, 2017
    Publication date: June 7, 2018
    Inventors: David A. Weitz, Assaf Rotem, Oren Ram, Bradley E. Bernstein
  • Publication number: 20180023133
    Abstract: The present invention generally relates to microfluidics and/or epigenetic sequencing. In one set of embodiments, cells contained within a plurality of microfluidic droplets are lysed and the DNA (e.g., from nucleosomes) within the droplets are labeled, e.g., with adapters containing an identification sequence. The adapters may also contain other sequences, e.g., restriction sites, primer sites, etc., to assist with later analysis. After labeling with adapters, the DNA from the different cells may be combined and analyzed, e.g., to determine epigenetic information about the cells. For example, the DNA may be separated on the basis of certain modifications (e.g., methylation), and the DNA from the separated nucleosomes may be sequenced using techniques such as chromatin immunoprecipitation (“ChIP”). In some cases, the DNA sequences may also be aligned with genomes, e.g., to determine which portions of the genome were epigenetically modified, e.g., via methylation.
    Type: Application
    Filed: August 7, 2017
    Publication date: January 25, 2018
    Inventors: Assaf Rotem, Oren Ram, Bradley E. Bernstein, David A. Weitz
  • Patent number: 9770601
    Abstract: Transcranial magnetic stimulation (TMS) is a remarkable tool for probing the brain. However, it is still unclear why specific regions in the cortex are excitable by TMS while others are not. This invention provides methods and tools for the design of efficient magnetic stimulators. Such stimulators can excite neuronal networks that were not sensitive to stimulation until now. Stimulation can be carried out both in-vitro and in-vivo. Novel systems and techniques of this invention will enable both treatment and diagnostics by stimulating regions of the brain or neuronal assemblies that were previously unaffected by TMS.
    Type: Grant
    Filed: May 18, 2015
    Date of Patent: September 26, 2017
    Assignee: YEDA RESEARCH AND DEVELOPMENT CO. LTD.
    Inventors: Elisha Moses, Assaf Rotem
  • Patent number: 9573099
    Abstract: The present invention generally relates to emulsions, and more particularly, to double and other multiple emulsions. Certain aspects of the present invention are generally directed to the creation of double emulsions and other multiple emulsions at a common junction of microfluidic channels. In some cases, the microfluidic channels at the common junction may have substantially the same hydrophobicity. In one set of embodiments, a device may include a common junction of six or more channels, where a first fluid flows through one channel, a second fluid flows through two channels, and a third or carrying fluid flows through two more channels, such that a double emulsion of a first droplet of the first fluid, contained in a second droplet of the second fluid, contained by the carrying fluid, flows away from the common junction through a sixth channel.
    Type: Grant
    Filed: December 7, 2015
    Date of Patent: February 21, 2017
    Assignee: President and Fellows of Harvard College
    Inventors: David A. Weitz, Assaf Rotem, Adam R. Abate, Christian Holtze
  • Publication number: 20160208323
    Abstract: Disclosed are methods for shearing and tagging chromatin DNA. The disclosed methods include contacting chromatin DNA with at least one transposome, that includes a transposase enzyme. The transposon is made up of a first DNA molecule that includes a first transposase recognition site and a second DNA molecule that includes a second transposase recognition site, wherein the transposase integrates the first and second DNA molecules into chromatin DNA. The first and second DNA molecules of the transposon can be disconnected, such that upon integration of the transposon the chromatin bound DNA is sheared and tagged with the first and second DNA molecules, for example to prepare a library of sheared and tagged chromatin DNA fragments.
    Type: Application
    Filed: June 19, 2014
    Publication date: July 21, 2016
    Inventors: Bradley BERNSTEIN, Alon GOREN, Chad NUSBAUM, Oren RAM, Assaf ROTEM, Daniel TARJAN, Jeffrey XING, Aviv REGEV
  • Publication number: 20160193574
    Abstract: The present invention generally relates to emulsions, and more particularly, to double and other multiple emulsions. Certain aspects of the present invention are generally directed to the creation of double emulsions and other multiple emulsions at a common junction of microfluidic channels. In some cases, the microfluidic channels at the common junction may have substantially the same hydrophobicity. In one set of embodiments, a device may include a common junction of six or more channels, where a first fluid flows through one channel, a second fluid flows through two channels, and a third or carrying fluid flows through two more channels, such that a double emulsion of a first droplet of the first fluid, contained in a second droplet of the second fluid, contained by the carrying fluid, flows away from the common junction through a sixth channel.
    Type: Application
    Filed: December 7, 2015
    Publication date: July 7, 2016
    Inventors: David A. Weitz, Assaf Rotem, Adam R. Abate, Christian Holtze
  • Patent number: 9238206
    Abstract: The present invention generally relates to emulsions, and more particularly, to double and other multiple emulsions. Certain aspects of the present invention are generally directed to the creation of double emulsions and other multiple emulsions at a common junction of microfluidic channels. In some cases, the microfluidic channels at the common junction may have substantially the same hydrophobicity. In one set of embodiments, a device may include a common junction of six or more channels, where a first fluid flows through one channel, a second fluid flows through two channels, and a third or carrying fluid flows through two more channels, such that a double emulsion of a first droplet of the first fluid, contained in a second droplet of the second fluid, contained by the carrying fluid, flows away from the common junction through a sixth channel.
    Type: Grant
    Filed: May 22, 2012
    Date of Patent: January 19, 2016
    Assignees: President and Fellows of Harvard College, BASF SE
    Inventors: Assaf Rotem, David A. Weitz, Adam R. Abate, Christian Holtze
  • Publication number: 20150246238
    Abstract: Transcranial magnetic stimulation (TMS) is a remarkable tool for probing the brain. However, it is still unclear why specific regions in the cortex are excitable by TMS while others are not. This invention provides methods and tools for the design of efficient magnetic stimulators. Such stimulators can excite neuronal networks that were not sensitive to stimulation until now. Stimulation can be carried out both in-vitro and in-vivo. Novel systems and techniques of this invention will enable both treatment and diagnostics by stimulating regions of the brain or neuronal assemblies that were previously unaffected by TMS.
    Type: Application
    Filed: May 18, 2015
    Publication date: September 3, 2015
    Inventors: Elisha MOSES, Assaf Rotem
  • Patent number: 9067052
    Abstract: Transcranial magnetic stimulation (TMS) is a remarkable tool for probing the brain. However, it is still unclear why specific regions in the cortex are excitable by TMS while others are not. This invention provides methods and tools for the design of efficient magnetic stimulators. Such stimulators can excite neuronal networks that were not sensitive to stimulation until now. Stimulation can be carried out both in-vitro and in-vivo. Novel systems and techniques of this invention will enable both treatment and diagnostics by stimulating regions of the brain or neuronal assemblies that were previously unaffected by TMS.
    Type: Grant
    Filed: March 2, 2010
    Date of Patent: June 30, 2015
    Assignee: YEDA RESEARCH AND DEVELOPMENT CO., LTD. at The Weizmann Institute of Science
    Inventors: Elisha Moses, Assaf Rotem
  • Patent number: 9033862
    Abstract: Transcranial magnetic stimulation (TMS) is a remarkable tool for probing the brain. However, it is still unclear why specific regions in the cortex are excitable by TMS while others are not. This invention provides methods and tools for the design of efficient magnetic stimulators. Such stimulators can excite neuronal networks that were not sensitive to stimulation until now. Stimulation can be carried out both in-vitro and in-vivo. Novel systems and techniques of this invention will enable both treatment and diagnostics by stimulating regions of the brain or neuronal assemblies that were previously unaffected by TMS.
    Type: Grant
    Filed: March 2, 2010
    Date of Patent: May 19, 2015
    Assignee: YEDA RESEARCH AND DEVELOPMENT CO., LTD. at The Weizmann Institute of Science
    Inventors: Elisha Moses, Assaf Rotem
  • Publication number: 20150057163
    Abstract: The present invention generally relates to microfluidics and/or epigenetic sequencing. In one set of embodiments, cells contained within a plurality of microfluidic droplets are lysed and the DNA (e.g., from nucleosomes) within the droplets are labeled, e.g., with adapters containing an identification sequence. The adapters may also contain other sequences, e.g., restriction sites, primer sites, etc., to assist with later analysis. After labeling with adapters, the DNA from the different cells may be combined and analyzed, e.g., to determine epigenetic information about the cells. For example, the DNA may be separated on the basis of certain modifications (e.g., methylation), and the DNA from the separated nucleosomes may be sequenced using techniques such as chromatin immunoprecipitation (“ChIP”). In some cases, the DNA sequences may also be aligned with genomes, e.g., to determine which portions of the genome were epigenetically modified, e.g., via methylation.
    Type: Application
    Filed: September 5, 2014
    Publication date: February 26, 2015
    Inventors: Assaf Rotem, Oren Ram, Bradley E. Bernstein, David A. Weitz
  • Publication number: 20150024378
    Abstract: Methods for analyzing DNA-containing samples are provided. The methods can comprise isolating a single genomic equivalent of DNA from the DNA-containing sample to provide a single isolated DNA molecule. The single isolated DNA molecule can be subjected to amplification conditions in the presence of one or more sets of unique molecularly tagged primers to provide one or more amplicons. Any spurious allelic sequences generated during the amplification process are tagged with an identical molecular tag. The methods can also include a step of determining the sequence of the one or more amplicons, in which the majority sequence for each code is selected as the sequence of the single original encapsulated target. The DNA-containing sample can be a forensic sample (e.g., mixed contributor sample), a fetal genetic screening sample, or a biological cell.
    Type: Application
    Filed: July 15, 2014
    Publication date: January 22, 2015
    Inventors: Andrew B. Feldman, Jeffrey S. Lin, David Weitz, Assaf Rotem