Patents by Inventor Antonio Bertoletti

Antonio Bertoletti 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: 20230393121
    Abstract: The present invention relates to a method of diagnosing and/or monitoring of virus infection and/or response to vaccination by generating a profile of a virus-specific T cell response that can (i) discriminate between virus infected and uninfected individuals, (ii) determine the effect of vaccination on T cell response, and (iii) determine the effect of viral variants on T cell response. More particularly, the described virus-specific T cell profiling is based on the detection of activated antigen-specific T lymphocytes responding to pools of selected short peptides from virus proteins. These peptide sequences have been selected for their immunogenicity. The profiling is typically performed using ELISPOT, but may also be performed using other techniques such as qPCR, more particularly direct qPCR. The present invention also includes kits for use in the methods of the invention.
    Type: Application
    Filed: October 18, 2021
    Publication date: December 7, 2023
    Applicant: National University of Singapore
    Inventors: Antonio Bertoletti, Anthony Tanoto Tan, Nina Le Bert
  • Publication number: 20230338532
    Abstract: Described are novel immunosuppressant drug resistant armored (IDRA) T cells that co-express an exogenous T cell receptor (TCR) and one or more exogenous inhibitors of an immunosuppressant. The TCR can bind to an antigen expressed by a tumor cell or virally infected cell. Also described are methods of producing the modified T cell, and methods of treating a subject using the modified T cells.
    Type: Application
    Filed: September 10, 2021
    Publication date: October 26, 2023
    Inventors: Antonio BERTOLETTI, Anthony Tanoto TAN, Morteza HAFEZI
  • Publication number: 20230061817
    Abstract: The invention provides T cell receptors (TCRs) that bind Hepatitis B virus (HBV) antigens. The present invention also provides methods of producing, screening and selecting the TCRs, therapeutic applications of the TCRs, and libraries of the TCRs.
    Type: Application
    Filed: January 21, 2021
    Publication date: March 2, 2023
    Inventors: Antonio BERTOLETTI, Zi Zong HO, Sarene KOH, Anthony Tanoto TAN, Lu-En WAI
  • Patent number: 11576932
    Abstract: The present invention relates to T cells, in particular a non-activated T cell, comprising an exogenous nucleic acid encoding a T cell Receptor (TCR) specific for a virus. An embodiment of the invention is directed to a non-activated (resting) T cell expressing Hepatitis B virus (HBV) envelope s183-191 TCR capable of inhibiting viral replication and which shows reduced expression of perforins and/or granzymes in response to stimulation as compared to an activated T cell expressing the said TCR. Also encompassed are methods for producing such cells, compositions, pharmaceutical compositions and kits comprising such cells and medical uses thereof.
    Type: Grant
    Filed: March 31, 2016
    Date of Patent: February 14, 2023
    Inventors: Antonio Bertoletti, Sarene Koh
  • Patent number: 11186624
    Abstract: Hepatitis B Virus (HBV) antigen specific binding molecules, in particular T Cell Receptors (TCRs), TCR polypeptides and fragments thereof. The invention is also related to modified cells containing the TCRs, TCR polypeptides or fragments, pharmaceutical composition or kits including the same or methods of making or using the same as is described. In particular, the invention discloses TCRs or a fragments thereof, capable of binding to a peptide of a Hepatitis B Virus (HBV) Env polypeptide presented by an MHC class I molecule comprising an MHC class I ?-chain encoded by an HLA-Cw*08 allele.
    Type: Grant
    Filed: September 23, 2016
    Date of Patent: November 30, 2021
    Inventors: Antonio Bertoletti, Tan Anthony Tanoto, Sheau Fung Sarene Koh, Zack Ho
  • Publication number: 20200377883
    Abstract: The present invention relates to antisense oligonucleotides for modulating the function of a T cell, including antisense oligonucleotides that hybridise to IFN-?, granzyme, perforin 1, PD-1, PRDM1, PD-L1, CD40LG, NDFIP1, PDCD1 LG2, REL, BTLA, CD80, CD160, CD244, LAG3, TIGIT, ADORA2A & TIM-3 RNAs. In particular, the present invention relates to antisense oligonucleotides capable of inducing exon skipping of RNA. Also claimed is a method for further modifying the specificity of said T-cell by providing for a T cell receptor gene.
    Type: Application
    Filed: June 27, 2018
    Publication date: December 3, 2020
    Inventors: Ernest GUCCIONE, Dave Keng Boon WEE, Antonio BERTOLETTI
  • Publication number: 20190233497
    Abstract: Hepatitis B Virus (HBV) antigen specific binding molecules, in particular T Cell Receptors (TCRs), TCR polypeptides and fragments thereof. The invention is also related to modified cells containing the TCRs, TCR polypeptides or fragments, pharmaceutical composition or kits including the same or methods of making or using the same as is described. In particular, the invention discloses TCRs or a fragments thereof, capable of binding to a peptide of a Hepatitis B Virus (HBV) Env polypeptide presented by an MHC class I molecule comprising an MHC class I ?-chain encoded by an HLA-Cw*08 allele.
    Type: Application
    Filed: September 23, 2016
    Publication date: August 1, 2019
    Applicant: Lion TCR Pte. Ltd.
    Inventors: Antonio Bertoletti, Tan Anthony Tanoto, Sheau Fung Sarene Koh, Zack Ho
  • Publication number: 20190192566
    Abstract: The present invention relates to T cells, in particular a non-activated T cell, comprising an exogenous nucleic acid encoding a T cell Receptor (TCR) specific for a virus. An embodiment of the invention is directed to a non-activated (resting) T cell expressing Hepatitis B virus (HBV) envelope s183-191 TCR capable of inhibiting viral replication and which shows reduced expression of perforins and/or granzymes in response to stimulation as compared to an activated T cell expressing the said TCR. Also encompassed are methods for producing such cells, compositions, pharmaceutical compositions and kits comprising such cells and medical uses thereof.
    Type: Application
    Filed: March 31, 2016
    Publication date: June 27, 2019
    Applicant: Lion TCR Pte. Ltd.
    Inventors: Antonio Bertoletti, Sarene Koh
  • Patent number: 10004801
    Abstract: There is provided at least one isolated cell comprising at least one HBV epitope-reactive exogenous T cell receptor and/or fragment thereof, and methods for producing them. In particular, there is provided polynucleotides, constructs and vectors encoding at least one HBV epitope-reactive exogenous T cell receptor for use in the treatment of Hepatitis B Virus (HBV) and Hepatocellular Carcinoma (HCC). The invention further provides kits and methods of detection of HBV and HCC.
    Type: Grant
    Filed: July 1, 2016
    Date of Patent: June 26, 2018
    Assignee: Agency for Science, Technology and Research
    Inventors: Antonio Bertoletti, Adam Gehring
  • Publication number: 20170202953
    Abstract: There is provided at least one isolated cell comprising at least one HBV epitope-reactive exogenous T cell receptor and/or fragment thereof, and methods for producing them. In particular, there is provided polynucleotides, constructs and vectors encoding at least one HBV epitope-reactive exogenous T cell receptor for use in the treatment of Hepatitis B Virus (HBV) and Hepatocellular Carcinoma (HCC). The invention further provides kits and methods of detection of HBV and HCC.
    Type: Application
    Filed: July 1, 2016
    Publication date: July 20, 2017
    Inventors: Antonio Bertoletti, Adam Gehring
  • Publication number: 20160135437
    Abstract: This invention refers to a mouse for human hepatitis studies wherein the mouse has been injected with CD34+ stem cells and wherein the mouse is immunocompromised, as well as a method of manufacturing a mouse model comprising administering CD34+ stem cells as defined herein into an immunocompromised mouse as defined herein. The invention also refers to the use of a mouse as defined for testing the efficiency of putative anti-HBV or anti-HCV drugs or for characterizing changes in viral quasispecies during HBV or HCV infection.
    Type: Application
    Filed: June 5, 2014
    Publication date: May 19, 2016
    Inventors: Qingfeng CHEN, Choong Tat KENG, Yee Joo TAN, Antonio BERTOLETTI
  • Patent number: 9334317
    Abstract: There is provided at least one isolated TCR-like antibody or fragment thereof, wherein the antibody or fragment thereof is capable of specifically binding to at least one HBV derived peptide.
    Type: Grant
    Filed: November 19, 2010
    Date of Patent: May 10, 2016
    Assignee: AGENCY FOR SCIENCE, TECHNOLOGY AND RESEARCH
    Inventors: Antonio Bertoletti, Sastry Konduru Seetharama, Paul Anthony Macary, Soh Ha Chan, Chien Tei Too
  • Publication number: 20140134194
    Abstract: There is provided at least one isolated cell comprising at least one HBV epitope-reactive exogenous T cell receptor and/or fragment thereof, and methods for producing them. In particular, there is provided polynucleotides, constructs and vectors encoding at least one HBV epitope-reactive exogenous T cell receptor for use in the treatment of Hepatitis B Virus (HBV) and Hepatocellular Carcinoma (HCC). The invention further provides kits and methods of detection of HBV and HCC.
    Type: Application
    Filed: November 8, 2013
    Publication date: May 15, 2014
    Applicant: Agency for Science, Technology and Research
    Inventors: Antonio Bertoletti, Adam Gehring
  • Publication number: 20140004079
    Abstract: Disclosed is a method of eliciting an immune response to an antigen present endogenously in a mammal. The method may comprise administering to the mammal a composition comprising at least one immunomodulator for inducing cell differentiation and or antigen-presenting function of antigen-presenting cell precursor. The antigen-presenting cell precursor may have taken up the antigen. Also disclosed are a composition for use in the method, an adjuvant comprising the composition, the use of the composition and the immunomodulator as described herein.
    Type: Application
    Filed: June 21, 2013
    Publication date: January 2, 2014
    Applicant: Agency for Science, Technology and Research
    Inventors: Adam Joseph GEHRING, Antonio Bertoletti, Florent Ginhoux
  • Patent number: 8603810
    Abstract: There is provided at least one isolated cell comprising at least one HBV epitope-reactive exogenous T cell receptor and/or fragment thereof, and methods for producing them. In particular, there is provided polynucleotides, constructs and vectors encoding at least one HBV epitope-reactive exogenous T cell receptor for use in the treatment of Hepatitis B Virus (HBV) and Hepatocellular Carcinoma (HCC). The invention further provides kits and methods of detection of HBV and HCC.
    Type: Grant
    Filed: May 7, 2009
    Date of Patent: December 10, 2013
    Assignee: Agency for Science, Technology and Research
    Inventors: Antonio Bertoletti, Adam Gehring
  • Publication number: 20120308580
    Abstract: There is provided at least one isolated TCR-like antibody or fragment thereof, wherein the antibody or fragment thereof is capable of specifically binding to at least one HBV derived peptide.
    Type: Application
    Filed: November 19, 2010
    Publication date: December 6, 2012
    Applicants: NATIONAL UNIVERSITY OF SINGAPORE, AGENCY FOR SCIENCE, TECHNOLOGY AND RESEARCH
    Inventors: Antonio Bertoletti, Sastry Konduru Seetharama, Paul Anthony Macary, Soh Ha Chan, Chien Tei Too
  • Publication number: 20110070208
    Abstract: There is provided at least one isolated cell comprising at least one HBV epitope-reactive exogenous T cell receptor and/or fragment thereof, and methods for producing them. In particular, there is provided polynucleotides, constructs and vectors encoding at least one HBV epitope-reactive exogenous T cell receptor for use in the treatment of Hepatitis B Virus (HBV) and Hepatocellular Carcinoma (HCC). The invention further provides kits and methods of detection of HBV and HCC.
    Type: Application
    Filed: May 7, 2009
    Publication date: March 24, 2011
    Applicant: AGENCY FOR SCIENCE, TECHNOLOGY AND RESEARCH
    Inventors: Antonio Bertoletti, Adam Gehring