Patents by Inventor Govindaswami Ragupathi

Govindaswami Ragupathi 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: 20230357302
    Abstract: A number of triterpene saponin variants with different modifications on their central glycosyl ester linkage are described. Also described are methods of making and method of using such triterpene saponin variants.
    Type: Application
    Filed: April 17, 2023
    Publication date: November 9, 2023
    Inventors: Derek S. TAN, David Y. GIN, William E. WALKOWICZ, Albertto FERNANDEZ-TEJADA, Govindaswami RAGUPATHI
  • Publication number: 20230131867
    Abstract: The present invention relates to triterpene glycoside saponin-derived adjuvants, syntheses thereof, intermediates thereto, and uses thereof. QS-7 is a potent immuno-adjuvant that is significantly less toxic than QS-21, a related saponin that is currently the favored adjuvant in anticancer and antiviral vaccines. Tedious isolation and purification protocols have hindered the clinical development of QS-7. A novel semi-synthetic method is provided wherein a hydrolyzed prosapogenin mixture is used to synthesize QS-7, QS-21, and related analogs, greatly facilitating access to QS-7 and QS-21 analogs for preclinical and clinical evaluation.
    Type: Application
    Filed: September 19, 2022
    Publication date: April 27, 2023
    Inventors: David GIN, Michelle ADAMS, Kai DENG, Philip LIVINGSTON, Govindaswami RAGUPATHI, Eric CHEA, Alberto FERNANDEZ-TEJADA, Lars Ulrik NORDSTROEM, William WALKOWICZ, Jeffrey GARDNER, Derek TAN
  • Patent number: 11629162
    Abstract: A number of triterpene saponin variants with different modifications on their central glycosyl ester linkage are described. Also described are methods of making and method of using such triterpene saponin variants.
    Type: Grant
    Filed: December 19, 2016
    Date of Patent: April 18, 2023
    Assignee: Memorial Sloan-Kettering Cancer Center
    Inventors: Derek S. Tan, David Y. Gin, William E. Walkowicz, Alberto Fernandez-Tejada, Govindaswami Ragupathi
  • Patent number: 11447515
    Abstract: The present invention relates to triterpene glycoside saponin-derived adjuvants, syntheses thereof, intermediates thereto, and uses thereof. QS-7 is a potent immuno-adjuvant that is significantly less toxic than QS-21, a related saponin that is currently the favored adjuvant in anticancer and antiviral vaccines. Tedious isolation and purification protocols have hindered the clinical development of QS-7. A novel semi-synthetic method is provided wherein a hydrolyzed prosapogenin mixture is used to synthesize QS-7, QS-21, and related analogs, greatly facilitating access to QS-7 and QS-21 analogs for preclinical and clinical evaluation.
    Type: Grant
    Filed: June 16, 2017
    Date of Patent: September 20, 2022
    Assignee: SLOAN KETTERING INSTITUTE FOR CANCER RESEARCH
    Inventors: David Gin, Michelle Adams, Kai Deng, Philip Livingston, Govindaswami Ragupathi, Eric Chea, Alberto Fernandez-Tejada, Lars Ulrik Nordstroem, William Walkowicz, Jeffrey Gardner, Derek Tan
  • Publication number: 20190010181
    Abstract: A number of triterpene saponin variants with different modifications on their central glycosyl ester linkage are described. Also described are methods of making and method of using such triterpene saponin variants.
    Type: Application
    Filed: December 19, 2016
    Publication date: January 10, 2019
    Inventors: Derek S. TAN, David Y. GIN, William E. WALKOWICZ, Alberto FERNANDEZ-TAJADA, Govindaswami RAGUPATHI
  • Publication number: 20170283450
    Abstract: The present invention relates to triterpene glycoside saponin-derived adjuvants, syntheses thereof, intermediates thereto, and uses thereof. QS-7 is a potent immuno-adjuvant that is significantly less toxic than QS-21, a related saponin that is currently the favored adjuvant in anticancer and antiviral vaccines. Tedious isolation and purification protocols have hindered the clinical development of QS-7. A novel semi-synthetic method is provided wherein a hydrolyzed prosapogenin mixture is used to synthesize QS-7, QS-21, and related analogs, greatly facilitating access to QS-7 and QS-21 analogs for preclinical and clinical evaluation.
    Type: Application
    Filed: June 16, 2017
    Publication date: October 5, 2017
    Inventors: David GIN, Michelle ADAMS, Kai DENG, Philip LIVINGSTON, Govindaswami RAGUPATHI, Eric CHEA, Alberto FERNANDEZ-TEJADA, Lars Ulrik NORDSTROEM, William WALKOWICZ, Jeffrey GARDNER, Derek TAN
  • Patent number: 9718850
    Abstract: The present invention relates to triterpene glycoside saponin-derived adjuvants, syntheses thereof, intermediates thereto, and uses thereof. QS-7 is a potent immuno-adjuvant that is significantly less toxic than QS-21, a related saponin that is currently the favored adjuvant in anticancer and antiviral vaccines. Tedious isolation and purification protocols have hindered the clinical development of QS-7. A novel semi-synthetic method is provided wherein a hydrolyzed prosapogenin mixture is used to synthesize QS-7, QS-21, and related analogs, greatly facilitating access to QS-7 and QS-21 analogs for preclinical and clinical evaluation.
    Type: Grant
    Filed: September 24, 2014
    Date of Patent: August 1, 2017
    Assignee: MEMORIAL SLOAN-KETTERING INSTITUTE FOR CANCER RESEARCH
    Inventors: David Gin, Michelle Adams, Kai Deng, Philip Livingston, Govindaswami Ragupathi, Eric Chea, Alberto Fernandez-Tejada, Lars Ulrik Nordstroem, William Walkowicz, Jeffrey Gardner, Derek Tan
  • Patent number: 9572875
    Abstract: This invention provides a polyvalent vaccine comprising at least two conjugated antigens selected from a group containing glycolipid antigen, polysaccharide antigen, mucin antigen, glycosylated mucin antigen and an appropriate adjuvant. This invention also provides a multivalent vaccine comprising at least two of the following: glycosylated MUC-1-32mer, Globo H, GM2, Ley, Tn(c), sTN(c), and TF(c). This invention provides the vaccine above, wherein the adjuvant is saponin-based adjuvant. This invention provides a method for inducing immune response in a subject comprising administering an effective amount of the vaccine above to the subject. Finally, this invention provides a method for treating cancer in a subject comprising administering an appropriate amount of the vaccine above to the subject.
    Type: Grant
    Filed: October 1, 2015
    Date of Patent: February 21, 2017
    Assignee: SLOAN-KETTERING INSTITUTE FOR CANCER RESEARCH
    Inventors: Philip O. Livingston, Govindaswami Ragupathi, Samuel J. Danishefsky
  • Patent number: 9464116
    Abstract: The present invention provides novel n-alkenyl glycosides and glycoconjugates, n-alkyl glycoamino acids, and methods for the synthesis thereof. In another aspect, the present invention provides novel clustered glycopeptides and methods for the synthesis thereof. In still another aspect, the present invention provides methods for the treatment of cancer, preferably for the prevention of recurrence of cancer, and methods for inducing antibodies in a subject, comprising administering to a subject in need, an effective amount of any of the inventive glycoconjugates as disclosed herein.
    Type: Grant
    Filed: January 6, 2014
    Date of Patent: October 11, 2016
    Assignee: Sloan-Kettering Institute for Cancer Research
    Inventors: Samuel J. Danishefsky, Jennifer R. Allen, Govindaswami Ragupathi, Philip O. Livingston, Lawrence Williams
  • Publication number: 20160250306
    Abstract: This invention provides a polyvalent vaccine comprising at least two conjugated antigens selected from a group containing glycolipid antigen, polysaccharide antigen, mucin antigen, glycosylated mucin antigen and an appropriate adjuvant. This invention also provides a multivalent vaccine comprising at least two of the following: glycosylated MUC-1-32mer, Globo H, GM2, Ley, Tn(c), sTN(c), and TF(c). This invention provides the vaccine above, wherein the adjuvant is saponin-based adjuvant. This invention provides a method for inducing immune response in a subject comprising administering an effective amount of the vaccine above to the subject. Finally, this invention provides a method for treating cancer in a subject comprising administering an appropriate amount of the vaccine above to the subject.
    Type: Application
    Filed: October 1, 2015
    Publication date: September 1, 2016
    Inventors: Philip O. Livingston, Govindaswami Ragupathi, Samuel J. Danishefsky
  • Patent number: 9149516
    Abstract: This invention provides a polyvalent vaccine comprising at least two conjugated antigens selected from a group containing glycolipid antigen, polysaccharide antigen, mucin antigen, glycosylated mucin antigen and an appropriate adjuvant. This invention also provides a multivalent vaccine comprising at least two of the following: glycosylated MUC-1-32mer, Globo H, GM2, Ley, Tn(c), sTN(c), and TF(c). This invention provides the vaccine above, wherein the adjuvant is saponin-based adjuvant. This invention provides a method for inducing immune response in a subject comprising administering an effective amount of the vaccine above to the subject. Finally, this invention provides a method for treating cancer in a subject comprising administering an appropriate amount of the vaccine above to the subject.
    Type: Grant
    Filed: July 26, 2013
    Date of Patent: October 6, 2015
    Assignee: SLOAN-KETTERING INSTITUTE FOR CANCER RESEARCH
    Inventors: Philip O. Livingston, Govindaswami Ragupathi, Samuel J. Danishefsky
  • Publication number: 20140271817
    Abstract: The present invention provides novel n-alkenyl glycosides and glycoconjugates, n-alkyl glycoamino acids, and methods for the synthesis thereof. In another aspect, the present invention provides novel clustered glycopeptides and methods for the synthesis thereof. In still another aspect, the present invention provides methods for the treatment of cancer, preferably for the prevention of recurrence of cancer, and methods for inducing antibodies in a subject, comprising administering to a subject in need, an effective amount of any of the inventive glycoconjugates as disclosed herein.
    Type: Application
    Filed: January 6, 2014
    Publication date: September 18, 2014
    Applicant: SLOAN-KETTERING INSTITUTE FOR CANCER RESEARCH
    Inventors: Samuel J. Danishefsky, Jennifer R. Allen, Govindaswami Ragupathi, Philip O. Livingston, Lawrence Williams
  • Publication number: 20140037673
    Abstract: This invention provides a polyvalent vaccine comprising at least two conjugated antigens selected from a group containing glycolipid antigen, polysaccharide antigen, mucin antigen, glycosylated mucin antigen and an appropriate adjuvant. This invention also provides a multivalent vaccine comprising at least two of the following: glycosylated MUC-1-32mer, Globo H, GM2, Ley, Tn(c), sTN(c), and TF(c). This invention provides the vaccine above, wherein the adjuvant is saponin-based adjuvant. This invention provides a method for inducing immune response in a subject comprising administering an effective amount of the vaccine above to the subject. Finally, this invention provides a method for treating cancer in a subject comprising administering an appropriate amount of the vaccine above to the subject.
    Type: Application
    Filed: July 26, 2013
    Publication date: February 6, 2014
    Applicant: SLOAN-KETTERING INSTITUTE FOR CANCER RESEARCH
    Inventors: Philip O. Livingston, Govindaswami Ragupathi, Samuel J. Danishefsky
  • Patent number: 8623378
    Abstract: The present invention provides novel n-alkenyl glycosides and glycoconjugates, n-alkyl glycoamino acids, and methods for the synthesis thereof. In another aspect, the present invention provides novel clustered glycopeptides and methods for the synthesis thereof. In still another aspect, the present invention provides methods for the treatment of cancer, preferably for the prevention of recurrence of cancer, and methods for inducing antibodies in a subject, comprising administering to a subject in need, an effective amount of any of the inventive glycoconjugates as disclosed herein.
    Type: Grant
    Filed: January 31, 2011
    Date of Patent: January 7, 2014
    Assignee: Sloan-Kettering Institute for Cancer Research
    Inventors: Samuel J. Danishefsky, Jennifer R. Allen, Govindaswami Ragupathi, Philip O. Livingston, Lawrence Williams
  • Patent number: 8540964
    Abstract: This invention provides a polyvalent vaccine comprising at least two conjugated antigens selected from a group containing glycolipid antigen, polysaccharide antigen, mucin antigen, glycosylated mucin antigen and an appropriate adjuvant. This invention also provides a multivalent vaccine comprising at least two of the following: glycosylated MUC-1-32mer, Globo H, GM2, Ley, Tn(c), sTN(c), and TF(c). This invention provides the vaccine above, wherein the adjuvant is saponin-based adjuvant. This invention provides a method for inducing immune response in a subject comprising administering an effective amount of the vaccine above to the subject. Finally, this invention provides a method for treating cancer in a subject comprising administering an appropriate amount of the vaccine above to the subject.
    Type: Grant
    Filed: December 8, 2011
    Date of Patent: September 24, 2013
    Assignee: Sloan-Kettering Institute for Cancer Research
    Inventors: Philip O. Livingston, Govindaswami Ragupathi, Samuel J. Danishefsky
  • Publication number: 20120263749
    Abstract: This invention provides a polyvalent vaccine comprising at least two conjugated antigens selected from a group containing glycolipid antigen, polysaccharide antigen, mucin antigen, glycosylated mucin antigen and an appropriate adjuvant. This invention also provides a multivalent vaccine comprising at least two of the following: glycosylated MUC-1-32mer, Globo H, GM2, Ley, Tn(c), sTN(c), and TF(c). This invention provides the vaccine above, wherein the adjuvant is saponin-based adjuvant. This invention provides a method for inducing immune response in a subject comprising administering an effective amount of the vaccine above to the subject. Finally, this invention provides a method for treating cancer in a subject comprising administering an appropriate amount of the vaccine above to the subject.
    Type: Application
    Filed: December 8, 2011
    Publication date: October 18, 2012
    Applicant: SLOAN-KETTERING INSTITUTE FOR CANCER RESEARCH
    Inventors: Philip O. Livingston, Govindaswami Ragupathi, Samuel J. Danishefsky
  • Patent number: 8092780
    Abstract: This invention provides a polyvalent vaccine comprising at least two conjugated antigens selected from a group containing glycolipid antigen, polysaccharide antigen, mucin antigen, glycosylated mucin antigen and an appropriate adjuvant. This invention also provides a multivalent vaccine comprising at least two of the following: glycosylated MUC-1-32mer, Globo H, GM2, Ley, Tn(c), sTN(c), and TF(c). This invention provides the vaccine above, wherein the adjuvant is saponin-based adjuvant. This invention provides a method for inducing immune response in a subject comprising administering an effective amount of the vaccine above to the subject. Finally, this invention provides a method for treating cancer in a subject comprising administering an appropriate amount of the vaccine above to the subject.
    Type: Grant
    Filed: October 31, 2008
    Date of Patent: January 10, 2012
    Assignee: Sloan-Kettering Institute for Cancer Research
    Inventors: Philip O. Livingston, Govindaswami Ragupathi, Samuel J. Danishefsky
  • Publication number: 20110206757
    Abstract: The present invention provides novel n-alkenyl glycosides and glycoconjugates, n-alkyl glycoamino acids, and methods for the synthesis thereof. In another aspect, the present invention provides novel clustered glycopeptides and methods for the synthesis thereof. In still another aspect, the present invention provides methods for the treatment of cancer, preferably for the prevention of recurrence of cancer, and methods for inducing antibodies in a subject, comprising administering to a subject in need, an effective amount of any of the inventive glycoconjugates as disclosed herein.
    Type: Application
    Filed: January 31, 2011
    Publication date: August 25, 2011
    Applicant: Sloan Kettering Institute for Cancer Research
    Inventors: Samuel J. Danishefsky, Jennifer R. Allen, Govindaswami Ragupathi, Philip O. Livingston, Lawrence Williams
  • Patent number: 7879335
    Abstract: The present invention provides novel n-alkenyl glycosides and glycoconjugates, n-alkyl glycoamino acids, and methods for the synthesis thereof. In another aspect, the present invention provides novel clustered glycopeptides and methods for the synthesis thereof. In still another aspect, the present invention provides methods for the treatment of cancer, preferably for the prevention of recurrence of cancer, and methods for inducing antibodies in a subject, comprising administering to a subject in need, an effective amount of any of the inventive glycoconjugates as disclosed herein.
    Type: Grant
    Filed: August 18, 2000
    Date of Patent: February 1, 2011
    Assignee: Sloan-Kettering Institute For Cancer Research
    Inventors: Samuel J. Danishefsky, Jennifer R. Allen, Govindaswami Ragupathi, Philip O. Livingston, Lawrence Williams
  • Patent number: 7854934
    Abstract: The present invention provides novel glycosides and glycoconjugates, glycoamino acids, and methods for the synthesis thereof. In another aspect, the present invention provides novel clustered glycopeptides and methods for the synthesis thereof. In still another aspect, the present invention provides methods for the treatment of cancer, preferably for the prevention of recurrence of cancer, and methods for inducing antibodies in a subject, comprising administering to a subject in need, an effective amount of any of the inventive glycopeptides as disclosed herein, either in conjugated form or unconjugated and in combination with a suitable immunogenic carrier.
    Type: Grant
    Filed: July 31, 2002
    Date of Patent: December 21, 2010
    Assignee: Sloan-Kettering Institute For Cancer Research
    Inventors: Samuel J. Danishefsky, Don M. Coltart, Stacy J. Keding, Kaustav Biswas, Philip O. Livingston, Govindaswami Ragupathi, Jennifer R. Allen, Lawrence Williams