Patents by Inventor Eric Kitas

Eric Kitas 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: 20260000771
    Abstract: The present invention relates to polyplexes comprising linear conjugates of LPEI and PEG. The LPEI and PEG fragments of the linear conjugates are preferably linked by a [3+2]cycloaddition between an azide and an alkene or an alkyne to produce a 1, 2, 3 triazole or a 4,5-dihydro-1H-[1,2,3]triazole. The linear conjugates are further conjugated to a targeting fragment capable of binding to prostate specific membrane antigen (PSMA) to enable selective interaction with a particular cell type. The conjugates can form polyplexes with therapeutic agents such as nucleic acids to deliver the therapeutic agents to cells.
    Type: Application
    Filed: November 7, 2023
    Publication date: January 1, 2026
    Inventors: Eric KITAS, Maya ZIGLER, Esteban POMBO-VILLAR
  • Publication number: 20260000700
    Abstract: The present invention relates to polyplexes comprising linear conjugates of LPEI and PEG. The LPEI and PEG fragments of the linear conjugates are preferably linked by a [3+2] cycloaddition between an azide and an alkene or an alkyne to produce a 1, 2, 3 triazole or a 4,5-dihydro-1H-[1,2,3]triazole. The linear conjugates are preferably further conjugated to a targeting fragment to enable selective interaction with a particular cell type. The conjugates can form polyplexes with therapeutic agents such as nucleic acids to deliver the therapeutic agents to cells.
    Type: Application
    Filed: November 7, 2023
    Publication date: January 1, 2026
    Inventors: Eric KITAS, Maya ZIGLER, Esteban POMBO-VILLAR
  • Publication number: 20250135014
    Abstract: The present invention relates to polyplexes comprising linear conjugates of LPEI and PEG. The LPEI and PEG fragments of the linear conjugates are preferably linked by a [3+2] cycloaddition between an azide and an alkene or an alkyne to produce a 1, 2, 3 triazole or a 4,5-dihydro-1H-[1,2,3]triazole. The linear conjugates are preferably further conjugated to a targeting fragment to enable selective interaction with a particular cell type. The conjugates can form polyplexes with therapeutic agents such as nucleic acids to deliver the therapeutic agents to cells.
    Type: Application
    Filed: November 7, 2022
    Publication date: May 1, 2025
    Inventors: Eric KITAS, Maya ZIGLER, Esteban POMBO-VILLAR
  • Publication number: 20240033364
    Abstract: The present invention relates to a polyplex for use in the treatment of castration resistant prostate cancer (CRPC) comprising a double stranded RNA (dsRNA) and a polymeric conjugate, wherein said polymeric conjugate consists of a linear polyethyleneimine (LPEI), one or more polyethylene glycol (PEG) moieties, one or more linkers and one or more targeting moieties, wherein said LPEI is covalently bound to one or more PEG moieties and each of said one or more PEG moieties is conjugated via one of the one or more linkers to one of the one or more targeting moieties, wherein each of said one or more targeting moieties is capable of binding to a cancer antigen, and wherein said cancer antigen is prostate surface membrane antigen (PSMA). Further, the invention relates to a pharmaceutical composition for use in the treatment of CRPC.
    Type: Application
    Filed: May 12, 2023
    Publication date: February 1, 2024
    Inventors: Esteban POMBO-VILLAR, Alexander LEVITZKI, Yael LANGUT, Maya ZIGLER, Alexei SHIR, Eric KITAS
  • Publication number: 20230372384
    Abstract: The present invention relates to a kit-of-parts comprising and a composition comprising a polyplex comprising a double stranded RNA (dsRNA) and a polymeric conjugate comprising a polyethyleneimine (PEI), one or more polyethylene glycol (PEG) moieties and one or more targeting moieties, and wherein each of said one or more targeting moieties is capable of 5 binding to PSMA; and at least one least one immune checkpoint modulator, wherein said at least one least one immune checkpoint modulator is capable of modulating an immune checkpoint protein. Further the invention relates to this composition or kit-of-parts for use in the treatment of cancer.
    Type: Application
    Filed: October 7, 2021
    Publication date: November 23, 2023
    Inventors: Esteban POMBO-VILLAR, Eric KITAS, Maya ZIGLER, Davor BAJIC, Babette SCHADE, Derrick BROKA
  • Patent number: 11679160
    Abstract: The present invention relates to a polyplex for use in the treatment of castration resistant prostate cancer (CRPC) comprising a double stranded RNA (dsRNA) and a polymeric conjugate, wherein said polymeric conjugate consists of a linear polyethyleneimine (LPEl), one or more polyethylene glycol (PEG) moieties, one or more linkers and one or more targeting moieties, wherein said LPEl is covalently bound to one or more PEG moieties and each of said one or more PEG moieties is conjugated via one of the one or more linkers to one of the one or more targeting moieties, wherein each of said one or more targeting moieties is capable of binding to a cancer antigen, and wherein said cancer antigen is prostate surface membrane antigen (PSMA). Further, the invention relates to a pharmaceutical composition for use in the treatment of CRPC.
    Type: Grant
    Filed: September 27, 2018
    Date of Patent: June 20, 2023
    Assignee: TARGIMMUNE THERAPEUTICS AG
    Inventors: Esteban Pombo-Villar, Alexander Levitzki, Yael Langut, Maya Zigler, Alexei Shir, Eric Kitas
  • Publication number: 20220175814
    Abstract: The present invention relates to a kit-of-parts comprising and a composition comprising a polyplex comprising a double stranded RNA (dsRNA) and a polymeric conjugate comprising a polyethyleneimine (PEI), one or more polyethylene glycol (PEG) moieties and one or more targeting moieties, and wherein each of said one or more targeting moieties is capable of binding to a cancer antigen; and at least one antibody, wherein said at least one antibody is capable of modulating an immune checkpoint protein. Further the invention relates to this composition or kit-of-parts for use in the treatment of cancer.
    Type: Application
    Filed: April 3, 2020
    Publication date: June 9, 2022
    Inventors: Derrick BROKA, David COLECCHIA, Lucia D'AMICO, Eric KITAS, Alexander LEVITZKI, Esteban POMBO-VILLAR, Alexei SHIR, Maya ZIGLER, Davor BAJIC, Anita JARZEBINSKA
  • Publication number: 20200230248
    Abstract: The present invention relates to a polyplex for use in the treatment of castration resistant prostate cancer (CRPC) comprising a double stranded RNA (dsRNA) and a polymeric conjugate, wherein said polymeric conjugate consists of a linear polyethyleneimine (LPEl), one or more polyethylene glycol (PEG) moieties, one or more linkers and one or more targeting moieties, wherein said LPEl is covalently bound to one or more PEG moieties and each of said one or more PEG moieties is conjugated via one of the one or more linkers to one of the one or more targeting moieties, wherein each of said one or more targeting moieties is capable of binding to a cancer antigen, and wherein said cancer antigen is prostate surface membrane antigen (PSMA). Further, the invention relates to a pharmaceutical composition for use in the treatment of CRPC.
    Type: Application
    Filed: September 27, 2018
    Publication date: July 23, 2020
    Inventors: Esteban POMBO-VILLAR, Alexander LEVITZKI, Yael LANGUT, Maya ZIGLER, Alexei SHIR, Eric KITAS
  • Patent number: 9107957
    Abstract: The present invention is directed compositions for targeted delivery of RNA interference (RNAi) polynucleotides to hepatocytes in vivo. Targeted RNAi polynucleotides are administered together with co-targeted melittin delivery peptides. Delivery peptides provide membrane penetration function for movement of the RNAi polynucleotides from outside the cell to inside the cell. Reversible modification provides physiological responsiveness to the delivery peptides.
    Type: Grant
    Filed: June 25, 2013
    Date of Patent: August 18, 2015
    Assignee: Arrowhead Madison Inc.
    Inventors: David B Rozema, David L Lewis, Darren Wakefield, Eric Kitas, Philipp Hadwiger, Jon Wolff, Ingo Röhl, Peter Mohr, Torsten Hoffmann, Kerstin Jahn-Hofmann, Hans Martin Mueller, Günther Ott, Andrei V Blokhin, Jonathan D Benson, Jeffrey C Carlson
  • Patent number: 9011919
    Abstract: The present invention is directed compositions for targeted delivery of RNA interference (RNAi) polynucleotides to hepatocytes in vivo. Targeted RNAi polynucleotides are administered together with co-targeted delivery polymers. Delivery polymers provide membrane penetration function for movement of the RNAi polynucleotides from outside the cell to inside the cell. Reversible modification provides physiological responsiveness to the delivery polymers.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: April 21, 2015
    Assignee: Arrowhead Madison Inc.
    Inventors: David B. Rozema, David L. Lewis, Darren H. Wakefield, Torsten Hoffmann, Eric Kitas, Peter Mohr, Philipp Hadwiger, Wilma Thuer, Linda Valis
  • Publication number: 20130281658
    Abstract: The present invention is directed compositions for targeted delivery of RNA interference (RNAi) polynucleotides to hepatocytes in vivo. Targeted RNAi polynucleotides are administered together with co-targeted melittin delivery peptides. Delivery peptides provide membrane penetration function for movement of the RNAi polynucleotides from outside the cell to inside the cell. Reversible modification provides physiological responsiveness to the delivery peptides.
    Type: Application
    Filed: June 25, 2013
    Publication date: October 24, 2013
    Inventors: David B Rozema, David L Lewis, Darren Wakefield, Eric Kitas, Philipp Hadwiger, Jon Wolff, Ingo Röhl, Peter Mohr, Torsten Hoffmann, Kerstin Jahn-Hofmann, Hans Martin Mueller, Günther Ott, Andrei V Blokhin, Jonathan D Benson, Jeffrey C Carlson
  • Publication number: 20130190484
    Abstract: The present invention is directed compositions for delivery of RNA interference (RNAi) polynucleotides to cells in vivo. The compositions comprise amphipathic membrane active polyamines reversibly modified with enzyme cleavable dipeptide-amidobenzyl-carbonate masking agents. Modification masks membrane activity of the polymer while reversibility provides physiological responsiveness. The reversibly modified polyamines (dynamic polyconjugate or DPC) are further covalently linked to an RNAi polynucleotide or co-administered with a targeted RNAi polynucleotide-targeting molecule conjugate.
    Type: Application
    Filed: March 15, 2013
    Publication date: July 25, 2013
    Applicant: ARROWHEAD MADISON INC.
    Inventors: David Rozema, David Lewis, Darren Wakefield, Eric Kitas, Philipp Hadwiger, Jon Wolff, Ingo Roehl, Peter Mohr, Torsten Hoffmann, Kerstin Jahn-Hofmann, Hans Martin Mueller, Guenther Ott, Andrei Blokhin, Jeffrey Carlson, Jonathan Benson
  • Publication number: 20080085928
    Abstract: Compounds of formula (I) as well as pharmaceutically acceptable salts and esters thereof, wherein L, R1, R2, m and n have the meaning given in claim 1 and which can be used in the form of pharmaceutical compositions.
    Type: Application
    Filed: September 24, 2007
    Publication date: April 10, 2008
    Inventors: Wolfgang Haap, Paul Hebeisen, Eric Kitas, Philipp Kohler, Holger Kuehne, Armin Ruf
  • Publication number: 20070037789
    Abstract: The invention relates to compounds of general formula wherein R1, R2, R3/R3?, R4/R4? and R5/R5? are as defined in the specification and to pharmaceutically acceptable acid addition salts, optically pure enantiomers, racemates or diastereomeric mixtures thereof. The compounds are ?-secretase inhibitors which can be useful in the treatment of Alzheimer's disease or common cancers including, but not limited to, cervical carcinomas and breast carcinomas and malignancies of the hematopoietic system.
    Type: Application
    Filed: August 8, 2006
    Publication date: February 15, 2007
    Inventors: Alexander Flohr, Guido Galley, Roland Jakob-Roetne, Eric Kitas, Wolfgang Wostl
  • Publication number: 20060073522
    Abstract: The present invention relates to a fluorescently labeled growth hormone secretagogue which can be used for the identification of compounds capable of binding to growth hormone secretagogue receptors, in particular by high throughput screening.
    Type: Application
    Filed: December 12, 2005
    Publication date: April 6, 2006
    Inventors: Thilo Enderle, Martin Graf, Cornelia Hertel, Sannah Zoffmann, Eric Kitas
  • Publication number: 20060014945
    Abstract: The invention relates to compounds of the general formula in which R1, R2, R3, R4, R2?, R3?, R4?, R5, and X is —CHR— are as defined in the specification. The invention also provides pharmaceutically acceptable acid addition salts, optically pure enantiomers, racemates and diastereomeric mixtures of such compounds. The invention further provides methods for the treatment of Alzheimer's disease or common cancers.
    Type: Application
    Filed: July 12, 2005
    Publication date: January 19, 2006
    Inventors: Guido Galley, Eric Kitas, Roland Jakob-Roetne
  • Publication number: 20050085421
    Abstract: The present invention relates to a fluorescently labeled growth hormone secretagogue which can be used for the identification of compounds capable of binding to growth hormone secretagogue receptors, in particular by high throughput screening.
    Type: Application
    Filed: October 14, 2004
    Publication date: April 21, 2005
    Inventors: Thilo Enderle, Martin Graf, Cornelia Hertel, Sannah Zoffmann, Eric Kitas
  • Publication number: 20050075327
    Abstract: The present invention provides compounds of the general formula wherein R4 is one of the following groups and R1, R2, R3, R7, R8, and R9 are as defined in the specification and pharmaceutically acceptable salts, optically pure enantiomers, racemates or diastereomeric mixtures thereof. The compounds are useful for the treatment of Alzheimer's disease.
    Type: Application
    Filed: September 27, 2004
    Publication date: April 7, 2005
    Inventors: Alexander Flohr, Guido Galley, Roland Jakob-Roetne, Eric Kitas, Jens-Uwe Peters, Wolfgang Wostl
  • Publication number: 20050054633
    Abstract: The invention relates to malonamide derivatives of formula wherein each of the variables are as defined herein and to pharmaceutically acceptable acid addition salts, optically pure enantiomers, racemates and diastereomeric mixtures thereof. These compounds are ?-secretase inhibitors and may be used for the treatment of Alzheimer's disease.
    Type: Application
    Filed: September 2, 2004
    Publication date: March 10, 2005
    Inventors: Alexander Flohr, Guido Galley, Roland Jakob-Roetne, Eric Kitas, Jens-Uwe Peters, Wolfgang Wostl