Patents by Inventor Dmitry Cherkasov

Dmitry Cherkasov 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: 20220098641
    Abstract: It is disclosed a method for the detection of an amplification of nucleic acids in which substantially use is made of the fact that a pre-defined nucleic acid chain (target sequence) can be multiplied/amplified in the presence of a target sequence-specific activator oligonucleotide. The target sequence-specific activator oligonucleotide causes the separation of re-synthesized complementary primer extension products by means of strand displacement, so that a new primer oligonucleotide can attach to the respective template strand. The thus formed complex of a primer oligonucleotide and a template strand can initiate a new primer extension reaction. The thus formed primer extension products in turn function as templates, so that an exponential amplification reaction results. Amplification is detected by a detection system.
    Type: Application
    Filed: June 22, 2021
    Publication date: March 31, 2022
    Inventors: Christian Grunwald, Dmitry Cherkasov, Norbert Basler, Claus Becker, Hans-Joerg Hess, Andreas Mueller-Hermann
  • Publication number: 20220073967
    Abstract: A method for amplification of nucleic acids in which substantially use is made of the fact that a pre-defined nucleic acid chain (target sequence) can be multiplied/amplified in the presence of a target sequence-specific activator oligonucleotide. The target sequence-specific activator oligonucleotide causes the separation of re-synthesized complementary primer extension products by strand displacement, so that a new primer oligonucleotide can attach to the respective template strand. The thus formed complex of a primer oligonucleotide and a template strand can initiate a new primer extension reaction. The thus formed primer extension products in turn function as templates, so that an exponential amplification reaction results. Amplification of a particular target sequence takes place more efficiently in case of perfect match complemetary base pair formation between the activator oligonucleotide and the corresponding target sequence.
    Type: Application
    Filed: October 28, 2021
    Publication date: March 10, 2022
    Inventors: Dmitry CHERKASOV, Norbert Basler, Claus Becker, Hans-Joerg Hess, Andreas Mueller-Hermann
  • Patent number: 11203780
    Abstract: A method for amplification of nucleic acids in which substantially use is made of the fact that a pre-defined nucleic acid chain (target sequence) can be multiplied/amplified in the presence of a target sequence-specific activator oligonucleotide. The target sequence-specific activator oligonucleotide causes the separation of re-synthesized complementary primer extension products by strand displacement, so that a new primer oligonucleotide can attach to the respective template strand. The thus formed complex of a primer oligonucleotide and a template strand can initiate a new primer extension reaction. The thus formed primer extension products in turn function as templates, so that an exponential amplification reaction results. Amplification of a particular target sequence takes place more efficiently in case of perfect match complementary base pair formation between the activator oligonucleotide and the corresponding target sequence.
    Type: Grant
    Filed: February 20, 2020
    Date of Patent: December 21, 2021
    Inventors: Dmitry Cherkasov, Norbert Basler, Claus Becker, Hans-Joerg Hess, Andreas Mueller-Hermann
  • Patent number: 11072825
    Abstract: It is disclosed a method for the detection of an amplification of nucleic acids in which substantially use is made of the fact that a pre-defined nucleic acid chain (target sequence) can be multiplied/amplified in the presence of a target sequence-specific activator oligonucleotide. The target sequence-specific activator oligonucleotide causes the separation of re-synthesized complementary primer extension products by means of strand displacement, so that a new primer oligonucleotide can attach to the respective template strand. The thus formed complex of a primer oligonucleotide and a template strand can initiate a new primer extension reaction. The thus formed primer extension products in turn function as templates, so that an exponential amplification reaction results. Amplification is detected by a detection system.
    Type: Grant
    Filed: February 25, 2019
    Date of Patent: July 27, 2021
    Inventors: Christian Grunwald, Dmitry Cherkasov, Norbert Basler, Claus Becker, Hans-Joerg Hess, Andreas Mueller-Hermann
  • Publication number: 20210189479
    Abstract: A method is disclosed for detecting an amplification of nucleic acids in which use is essentially made of the fact that a predefined nucleic acid chain (target sequence) can be multiplied/amplified in the presence of a target-sequence-specific activator oligonucleotide. The target-sequence-specific activator oligonucleotide brings about the separation of de-novo synthesized complementary primer elongation products by means of strand displacement, so that a new primer oligonucleotide can attach to the respective strand of the template. The complex thus formed, of a primer oligonucleotide and a template strand, can initiate a new primer elongation reaction. The primer elongation products thus formed, in turn, act again as templates, the result being an exponentially proceeding amplification reaction. In the method, a selective amplification is effected in that, for the first, second primer and activator oligonucleotide, variants are used which differ from the target sequence by at least one nucleotide.
    Type: Application
    Filed: February 25, 2019
    Publication date: June 24, 2021
    Inventors: Christian Grunwald, Dmitry Cherkasov, Norbert BASLER, Claus BECKER, Hans-Joerg HESS, Andreas MUELLER-HERMANN
  • Publication number: 20210071244
    Abstract: The invention relates to a method for amplification of a nucleic acid by a nucleic acid polymerase via two primers, each of which comprise a sequence segment which is bound to the target sequence and a sequence segment which does not bind to the target sequence, wherein the second cannot serve as a template for the polymerase, and two controller oligonucleotides, each of which is complementary to the primers and a segment of the sequence segment synthesized by them and serves to release the synthesized strand from the template. The controllers also comprise modified nucleotide building blocks such that they cannot serve as templates for the activity of the first template-dependent nucleic acid polymerase.
    Type: Application
    Filed: February 28, 2019
    Publication date: March 11, 2021
    Applicant: AGCT GMBH
    Inventors: Dmitry CHERKASOV, Christian GRUNWALD
  • Publication number: 20210071243
    Abstract: The present invention relates to a method for the extension of an oligonucleotide primer with improved specificity using a specific oligonucleotide primer and a controller nucleotide, wherein the controller oligonucleotide enables sequence-specific strand opening of a double strand of extension product and template. The invention further relates to a respective kit for carrying out the method according to the invention.
    Type: Application
    Filed: February 26, 2019
    Publication date: March 11, 2021
    Applicant: AGCT GMBH
    Inventors: Dmitry CHERKASOV, Christian GRUNWALD
  • Publication number: 20210024978
    Abstract: It is disclosed a method for the detection of an amplification of nucleic acids in which substantially use is made of the fact that a pre-defined nucleic acid chain (target sequence) can be multiplied/amplified in the presence of a target sequence-specific activator oligonucleotide. The target sequence-specific activator oligonucleotide causes the separation of re-synthesized complementary primer extension products by means of strand displacement, so that a new primer oligonucleotide can attach to the respective template strand. The thus formed complex of a primer oligonucleotide and a template strand can initiate a new primer extension reaction. The thus formed primer extension products in turn function as templates, so that an exponential amplification reaction results. Amplification is detected by a detection system.
    Type: Application
    Filed: February 25, 2019
    Publication date: January 28, 2021
    Applicant: AGCT GmbH
    Inventors: Christian GRUNWALD, Dmitry CHERKASOV, Norbert BASLER, Claus BECKER, Hans-Joerg HESS, Andreas MÜLLER-HERMANN
  • Publication number: 20200239933
    Abstract: A method for amplification of nucleic acids in which substantially use is made of the fact that a pre-defined nucleic acid chain (target sequence) can be multiplied/amplified in the presence of a target sequence-specific activator oligonucleotide. The target sequence-specific activator oligonucleotide causes the separation of re-synthesized complementary primer extension products by strand displacement, so that a new primer oligonucleotide can attach to the respective template strand. The thus formed complex of a primer oligonucleotide and a template strand can initiate a new primer extension reaction. The thus formed primer extension products in turn function as templates, so that an exponential amplification reaction results. Amplification of a particular target sequence takes place more efficiently in case of perfect match complemetary base pair formation between the activator oligonucleotide and the corresponding target sequence.
    Type: Application
    Filed: February 20, 2020
    Publication date: July 30, 2020
    Inventors: Dmitry CHERKASOV, Norbert BASLER, Claus BECKER, Hans-Joerg HESS, Andreas MUELLER-HERMANN
  • Patent number: 10612082
    Abstract: A method for amplification of nucleic acids in which substantially use is made of the fact that a pre-defined nucleic acid chain (target sequence) can be multiplied/amplified in the presence of a target sequence-specific activator oligonucleotide. The target sequence-specific activator oligonucleotide causes the separation of re-synthesized complementary primer extension products by strand displacement, so that a new primer oligonucleotide can attach to the respective template strand. The thus formed complex of a primer oligonucleotide and a template strand can initiate a new primer extension reaction. The thus formed primer extension products in turn function as templates, so that an exponential amplification reaction results.
    Type: Grant
    Filed: August 21, 2017
    Date of Patent: April 7, 2020
    Assignee: AGCT GmbH
    Inventors: Dmitry Cherkasov, Norbert Basler, Claus Becker, Hans-Joerg Hess, Andreas Mueller-Hermann
  • Publication number: 20190185914
    Abstract: It is disclosed a method for amplification of nucleic acids in which substantially use is made of the fact that a pre-defined nucleic acid chain (target sequence) can be multiplied/amplified in the presence of a target sequence-specific activator oligonucleotide. The target sequence-specific activator oligonucleotide causes the separation of re-synthesized complementary primer extension products by means of strand displacement, so that a new primer oligonucleotide can attach to the respective template strand. The thus formed complex of a primer oligonucleotide and a template strand can initiate a new primer extension reaction. The thus formed primer extension products in turn function as templates, so that an exponential amplification reaction results. Here, the activator oligonucleotide itself does not function as a template and preferably is inert over a primer extension reaction.
    Type: Application
    Filed: August 21, 2017
    Publication date: June 20, 2019
    Inventors: Dmitry CHERKASOV, Norbert BASLER, Claus BECKER, Hans-Joerg HESS, Andreas MUELLER-HERMANN
  • Patent number: 9994894
    Abstract: The invention relates to a novel method for the enzymatic marking of nucleic acid chains (target sequences) by means of nucleotide conjugates. Said nucleotide conjugates are able, under reaction conditions, to specifically bind to the target sequence and integrate into the complementary growing strand by means of a polymerase. The nucleic acid chains marked by such conjugates can be bound to the solid phase. The marking can be carried out parallel to the enzymatic amplification of target sequences.
    Type: Grant
    Filed: April 26, 2012
    Date of Patent: June 12, 2018
    Assignee: AGCT GMBH
    Inventors: Dmitry Cherkasov, Claus Becker, Norbert Basler, Andreas Muller-Hermann, Petra Van Husen
  • Publication number: 20160340724
    Abstract: Methods for enzymatic synthesis of nucleic acid chains are disclosed in which a nucleotide-macromolecular conjugate is incorporated into the complementary strand of a target sequence.
    Type: Application
    Filed: March 11, 2016
    Publication date: November 24, 2016
    Inventors: Claus BECKER, Dmitry CHERKASOV
  • Patent number: 9315860
    Abstract: The invention relates to a novel method for enzymatically marking nucleic acid chains (target sequences) by using nucleotide conjugates. Said nucleotide conjugates are capable of binding specifically to the target sequence under reaction conditions and of being incorporated in the complementary growing strand by means of a polymerase. The nucleic acid chains marked with such conjugates can be bound to the solid phase. The marking can be carried out in parallel with the enzymatic amplification of target sequences.
    Type: Grant
    Filed: October 26, 2010
    Date of Patent: April 19, 2016
    Assignee: GENOVOXX GMBH
    Inventors: Claus Becker, Dmitry Cherkasov
  • Patent number: 9035035
    Abstract: The invention describes new structures of the nucleotide conjugates (nuc-macromolecules) comprising at lease one nucleotide moiety coupled to at least one macromolecular compound via a short linker. These conjugates can be used as substrates for various kinds of polymerizing enzymes in the enzymatic synthesis of nucleic acids. In particular, these compounds can be used for labeling nucleic acids.
    Type: Grant
    Filed: March 17, 2006
    Date of Patent: May 19, 2015
    Assignee: GENOVOXX GMBH
    Inventors: Dmitry Cherkasov, Englbert Bäuml
  • Publication number: 20150086981
    Abstract: The invention relates to a novel method for the enzymatic marking of nucleic acid chains (target sequences) with nucleotide conjugates. Under reaction conditions, said nucleotide conjugates are able to bind to a target sequence, and can be incorporated into the complementary growing strand by way of a polymerase. The nucleotide conjugates can be used for sequencing nucleic acid chains.
    Type: Application
    Filed: May 4, 2012
    Publication date: March 26, 2015
    Applicant: GENOVOXX GMBH
    Inventors: Dmitry Cherkasov, Claus Becker, Norbert Basler, Andreas Müller-Hermann, Petra Van Husen
  • Publication number: 20140295438
    Abstract: The invention relates to a novel method for the enzymatic marking of nucleic acid chains (target sequences) by means of nucleotide conjugates. Said nucleotide conjugates are able, under reaction conditions, to specifically bind to the target sequence and integrate into the complementary growing strand by means of a polymerase. The nucleic acid chains marked by such conjugates can be bound to the solid phase. The marking can be carried out parallel to the enzymatic amplification of target sequences.
    Type: Application
    Filed: April 26, 2012
    Publication date: October 2, 2014
    Applicant: GENOVOXX GMBH
    Inventors: Dmitry Cherkasov, Claus Becker, Norbert Basler, Andreas Muller-Hermann, Petra Van Husen
  • Patent number: 8637650
    Abstract: The invention relates to novel classes of nucleotides that can be used as substrates for enzymes, e.g. for labeling nucleic acids.
    Type: Grant
    Filed: November 5, 2004
    Date of Patent: January 28, 2014
    Assignee: Genovoxx GmbH
    Inventors: Dmitry Cherkasov, Christian Hennig
  • Publication number: 20130171631
    Abstract: The invention relates to a novel method for enzymatically marking nucleic acid chains (target sequences) by using nucleotide conjugates. Said nucleotide conjugates are capable of binding specifically to the target sequence under reaction conditions and of being incorporated in the complementary growing strand by means of a polymerase. The nucleic acid chains marked with such conjugates can be bound to the solid phase. The marking can be carried out in parallel with the enzymatic amplification of target sequences.
    Type: Application
    Filed: October 26, 2010
    Publication date: July 4, 2013
    Inventors: Claus Becker, Dmitry Cherkasov
  • Publication number: 20100304368
    Abstract: Novel methods for enzymatic synthesis of nucleic acid chains and the substrates for the same are disclosed. The methods are based on a step-wise enzymatic reaction. The sequencing of nucleic acids is an example of the use of the claimed methods.
    Type: Application
    Filed: September 20, 2007
    Publication date: December 2, 2010
    Inventors: Dmitry Cherkasov, Englebert Bäuml, Elisabeth Bäuml