WO2015009606A1 - Anti-human papillomavirus 16 e6 t cell receptors - Google Patents

Anti-human papillomavirus 16 e6 t cell receptors Download PDF

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Publication number
WO2015009606A1
WO2015009606A1 PCT/US2014/046480 US2014046480W WO2015009606A1 WO 2015009606 A1 WO2015009606 A1 WO 2015009606A1 US 2014046480 W US2014046480 W US 2014046480W WO 2015009606 A1 WO2015009606 A1 WO 2015009606A1
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Prior art keywords
seq
tcr
nos
amino acid
cells
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PCT/US2014/046480
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English (en)
French (fr)
Inventor
Christian S. HINRICHS
Steven A. Rosenberg
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US Department of Health and Human Services
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US Department of Health and Human Services
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Priority to AU2014290288A priority Critical patent/AU2014290288B2/en
Priority to CA2918216A priority patent/CA2918216C/en
Priority to JP2016527006A priority patent/JP6628719B2/ja
Priority to ES14748353T priority patent/ES2745472T3/es
Priority to EP19180239.6A priority patent/EP3572423B1/en
Priority to CN201480044286.1A priority patent/CN105452288B/zh
Priority to EP14748353.1A priority patent/EP3022223B1/en
Priority to CN201910649441.7A priority patent/CN110511960B/zh
Priority to US14/905,108 priority patent/US9822162B2/en
Application filed by US Department of Health and Human Services filed Critical US Department of Health and Human Services
Publication of WO2015009606A1 publication Critical patent/WO2015009606A1/en
Anticipated expiration legal-status Critical
Priority to US15/786,966 priority patent/US10329339B2/en
Priority to US16/408,939 priority patent/US10913785B2/en
Priority to US17/142,486 priority patent/US11697676B2/en
Priority to US18/323,493 priority patent/US12187779B2/en
Ceased legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07K—PEPTIDES
    • C07K14/00—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
    • C07K14/435—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans
    • C07K14/705—Receptors; Cell surface antigens; Cell surface determinants
    • C07K14/70503—Immunoglobulin superfamily
    • C07K14/7051—T-cell receptor (TcR)-CD3 complex
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K40/00—Cellular immunotherapy
    • A61K40/10—Cellular immunotherapy characterised by the cell type used
    • A61K40/11—T-cells, e.g. tumour infiltrating lymphocytes [TIL] or regulatory T [Treg] cells; Lymphokine-activated killer [LAK] cells
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K40/00—Cellular immunotherapy
    • A61K40/30—Cellular immunotherapy characterised by the recombinant expression of specific molecules in the cells of the immune system
    • A61K40/32—T-cell receptors [TCR]
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K40/00—Cellular immunotherapy
    • A61K40/40—Cellular immunotherapy characterised by antigens that are targeted or presented by cells of the immune system
    • A61K40/41—Vertebrate antigens
    • A61K40/42—Cancer antigens
    • A61K40/4271—Melanoma antigens
    • A61K40/4272—Melan-A/MART
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K40/00—Cellular immunotherapy
    • A61K40/40—Cellular immunotherapy characterised by antigens that are targeted or presented by cells of the immune system
    • A61K40/46—Viral antigens
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P31/00—Antiinfectives, i.e. antibiotics, antiseptics, chemotherapeutics
    • A61P31/12—Antivirals
    • A61P31/20—Antivirals for DNA viruses
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P35/00—Antineoplastic agents
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07K—PEPTIDES
    • C07K16/00—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies
    • C07K16/18—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans
    • C07K16/28—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans against receptors, cell surface antigens or cell surface determinants
    • C07K16/2803—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans against receptors, cell surface antigens or cell surface determinants against the immunoglobulin superfamily
    • C07K16/2809—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans against receptors, cell surface antigens or cell surface determinants against the immunoglobulin superfamily against the T-cell receptor (TcR)-CD3 complex
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
    • G01N33/50—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
    • G01N33/53—Immunoassay; Biospecific binding assay; Materials therefor
    • G01N33/566—Immunoassay; Biospecific binding assay; Materials therefor using specific carrier or receptor proteins as ligand binding reagents where possible specific carrier or receptor proteins are classified with their target compounds
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K38/00—Medicinal preparations containing peptides
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07K—PEPTIDES
    • C07K2317/00—Immunoglobulins specific features
    • C07K2317/30—Immunoglobulins specific features characterized by aspects of specificity or valency
    • C07K2317/34—Identification of a linear epitope shorter than 20 amino acid residues or of a conformational epitope defined by amino acid residues
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07K—PEPTIDES
    • C07K2319/00—Fusion polypeptide
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2333/00—Assays involving biological materials from specific organisms or of a specific nature
    • G01N2333/435—Assays involving biological materials from specific organisms or of a specific nature from animals; from humans
    • G01N2333/705—Assays involving receptors, cell surface antigens or cell surface determinants
    • G01N2333/70503—Immunoglobulin superfamily, e.g. VCAMs, PECAM, LFA-3
    • G01N2333/7051—T-cell receptor (TcR)-CD3 complex
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2800/00—Detection or diagnosis of diseases
    • G01N2800/70—Mechanisms involved in disease identification
    • G01N2800/7023—(Hyper)proliferation
    • G01N2800/7028—Cancer

Definitions

  • nucleotide/amino acid sequence listing submitted concurrently herewith and identified as follows: One 45,955 Byte ASCII (Text) file named "716827ST25.TXT,” dated May 27, 2014.
  • HPV human papillomavirus
  • An embodiment of the invention provides a T cell receptor (TCR) having antigenic specificity for human papillomavirus (HPV) 16 E6 and comprising a human variable region and a murine constant region.
  • TCR T cell receptor
  • Another embodiment of the invention provides an isolated or purified TCR having antigenic specificity for HPV 16 E6 and comprising the amino acid sequences of SEQ ID NOs: 3-8.
  • the invention further provides related polypeptides and proteins, as well as related nucleic acids, recombinant expression vectors, host cells, and populations of cells. Further provided by the invention are antibodies, or antigen binding portions thereof, and
  • compositions relating to the TCRs including functional portions and functional variants thereof) of the invention.
  • Methods of detecting the presence of a condition in a mammal and methods of treating or preventing a condition in a mammal, wherein the condition is cancer, HPV 16 infection, or HPV-positive premalignancy, are further provided by the invention.
  • the inventive method of detecting the presence of a condition in a mammal comprises (i) contacting a sample comprising cells of the condition with any of the inventive TCRs (including functional portions and functional variants thereof), polypeptides, proteins, nucleic acids, recombinant expression vectors, host cells, populations of host cells, antibodies, or antigen binding portions thereof, or pharmaceutical compositions described herein, thereby forming a complex, and (ii) detecting the complex, wherein detection of the complex is indicative of the presence of the condition in the mammal, wherein the condition is cancer, HPV 16 infection, or HPV-positive premalignancy.
  • the inventive method of treating or preventing a condition in a mammal comprises administering to the mammal any of the TCRs (including functional portions and functional variants thereof), polypeptides, or proteins described herein, any nucleic acid or recombinant expression vector comprising a nucleotide sequence encoding any of the TCRs (including functional portions and functional variants thereof), polypeptides, proteins described herein, or any host cell or population of host cells comprising a recombinant vector which encodes any of the TCRs (including functional portions and functional variants thereof), polypeptides, or proteins described herein, in an amount effective to treat or prevent the condition in the mammal, wherein the condition is cancer, HPV 16 infection, or HPV- positive premalignancy.
  • Figure 1 is a bar graph showing expression of HPV 16 E6 (white bars), HPV 16 E7 (shaded unhatched bars), HPV 18 E6 (unshaded hatched bars), or HPV 18 E7 (shaded hatched bars) relative to glyceraldehyde 3 -phosphate dehydrogenase (GAPDH) expression by CaSki cells, HeLa cells, 624 cells, or cells from tumor 3809.
  • GPDH glyceraldehyde 3 -phosphate dehydrogenase
  • FIGS 2A and 2B are bar graphs showing interferon-gamma (IFN- ⁇ ) (pg/mL) secreted by tumor infiltrating lymphocytes (TIL) from fragments (F) 2-14 of tumor 3809 (A), fragments 15-24 (B) of tumor 3809, or melanoma TIL upon co-culture with autologous dendritic cells (DCs) which had been pulsed with HPV 16 E6 alone (white bars), HPV 16 E6 in combination with anti-class I antibody (shaded unhatched bars), HPV 16 E7 alone (unshaded hatched bars), HPV 16 E7 in combination with anti-class I antibody (shaded hatched bars), gpl OO (black bars), or O T3 (horizontal striped bars).
  • IFN- ⁇ interferon-gamma
  • Figure 3 is a bar graph showing IFN- ⁇ (pg/mL) secreted by expanded numbers of 3809 4-lBB-selected TIL upon co-culture with 293-A2 cells (HEK-293 cells with stable expression of HLA-A2) transfected with green fluorescent protein (GFP), 293-A2 cells transfected with HPV 16 E6, 3809 lymphoblastoid cell line (LCL) (B cells that have been transformed using Epstein-Barr virus) cultured without peptide, 3809 LCL co-cultured with an HPV 16 E6 peptide pool, or O T3.
  • 293-A2 cells HEK-293 cells with stable expression of HLA-A2 cells
  • GFP green fluorescent protein
  • HPV 16 E6 3809 lymphoblastoid cell line (LCL) (B cells that have been transformed using Epstein-Barr virus) cultured without peptide
  • 3809 LCL co-cultured with an HPV 16 E6 peptide pool, or O T3.
  • Figure 4A is a bar graph showing IFN- ⁇ (pg/mL) secreted by peripheral blood lymphocytes (PBL) that were not transduced (untransduced) (unshaded bars) or transduced with a nucleotide sequence encoding SEQ ID NOs: 17 and 18 (E6 TCR; shaded bars) upon co-culture with target 293-A2 cells pulsed with HPV 16 E6 2 -38 peptide, 293-A2 cells pulsed with HPV 16 E7ii-i9 peptide, 293-A2 cells transduced with a plasmid encoding HPV 16 E6, 293 -A2 cells transduced with a plasmid encoding GFP, 293 cells transduced with a plasmid encoding HPV 16 E6, 624 cells transduced with a plasmid encoding HPV 16 E6, 624 cells transduced with a plasmid encoding HPV 16 E7, SCC
  • Figure 4B is a bar graph showing IFN- ⁇ (pg/mL) secreted by PBL transduced with a nucleotide sequence encoding SEQ ID NOs: 17 and 18 upon co-culture with target 293-A2 cells transduced with a plasmid encoding HPV 16 E6, 293 cells transduced with a plasmid encoding HPV 16 E6, SCC90 cells, CaSki cells, 624 cells, DMF/624 cells, or 4.7.20 cells pulsed with HPV 16 E7 peptides with no antibody (black bars), anti-MHC Class I antibody (grey bars), or anti-MHC Class II antibody (unshaded bars).
  • Figure 5 is a bar graph showing IFN- ⁇ (pg/mL) secreted by untransduced CD8- positive PBL (unshaded unhatched bars), untransduced CD4-positive PBL (cross-hatched unshaded bars), or PBL (CD8 positive (E6 TCR; shaded unhatched bars) or CD4 positive (E6 TCR; cross-hatched shaded bars)) that were transduced with a nucleotide sequence encoding SEQ ID NOs: 17 and 18 upon co-culture with target 293-A2 cells pulsed with HPV 16 E6 29 - 3 8 peptide, 293-A2 cells pulsed with HPV 16 E7n-i9 peptide, 293-A2 cells transduced with a plasmid encoding HPV 16 E6, 293 -A2 cells transduced with a plasmid encoding GFP, 293- A2 cells, 624 cells transduced with a plasmid encoding HPV
  • Figure 6A is a bar graph showing IFN- ⁇ (pg/mL) secreted by untransduced (UT) CD8-positive PBL (unshaded bars) or CD8 positive PBL transduced with a nucleotide sequence encoding SEQ ID NOs: 17 and 18 (shaded bars) upon co-culture with target T2 cells pulsed with varying concentrations of E629-38 peptide (-log M).
  • Figure 6B is a bar graph showing IFN- ⁇ (pg/mL) secreted by untransduced CD4- positive PBL (unshaded bars) or CD4 positive PBL transduced with a nucleotide sequence encoding SEQ ID NOs: 17 and 18 (E6 TCR; shaded bars) upon co-culture with target T2 cells pulsed with varying concentrations of E6 2 9 -38 peptide (-log M).
  • An embodiment of the invention provides a T cell receptor (TCR), and functional portions and functional variants thereof, having antigenic specificity for human
  • the TCR has antigenic specificity for HPV 16 E6 2 9 -38 .
  • HPV 16 is the subtype of HPV that is most commonly associated with malignancy. Without being bound to a particular theory or mechanism, HPV 16 is believed to cause cancer at least partly through the actions of the oncoprotein E6, which deregulates cell cycle control. HPV 16 E6 is constitutively expressed in cancer cells and is not expressed by normal, uninfected human tissues. HPV 16 E6 is expressed in a variety of human cancers including, but not limited to, cancer of the uterine cervix, oropharynx, anus, anal canal, anorectum, vagina, vulva, and penis.
  • the TCR may have antigenic specificity for any HPV 16 E6 protein, polypeptide or peptide.
  • the TCR has antigenic specificity for a HPV 16 E6 protein comprising, consisting of, or consisting essentially of, the amino acid sequence of SEQ ID NO: 1.
  • the TCR has antigenic specificity for a HPV 16 E6 2 9 -3 8 peptide comprising, consisting of, or consisting essentially of, the amino acid sequence of TIHDIILECV (SEQ ID NO: 2).
  • the inventive TCRs are able to recognize HPV 16 E6 in a major histocompatibility complex (MHC) class I-dependent manner.
  • MHC class I-dependent manner means that the TCR elicits an immune response upon binding to HPV 16 E6 within the context of an MHC class I molecule.
  • the MHC class I molecule can be any MHC class I molecule known in the art, e.g., HLA-A molecules.
  • the MHC class I molecule is an HLA-A2 molecule.
  • the TCRs (including functional portions and functional variants thereof) of the invention provide many advantages, including when expressed by cells used for adoptive cell transfer. Without being bound by a particular theory or mechanism, it is believed that because HPV 16 E6 is expressed by HPV 16-infected cells of multiple cancer types, the inventive TCRs (including functional portions and functional variants thereof)
  • the inventive TCRs advantageously target the destruction of cancer cells, HPV 16- infected cells, or HPV-positive premalignancy cells, while minimizing or eliminating the destruction of normal, non-cancerous, non-HPV-infected, and non-HPV-positive
  • inventive TCRs may, advantageously, successfully treat or prevent HPV- positive cancers that do not respond to other types of treatment such as, for example, chemotherapy alone, surgery, or radiation.
  • inventive TCRs provide highly avid recognition of HPV 16 E6, which may, advantageously, provide the ability to recognize unmanipulated tumor cells (e.g., tumor cells that have not been treated with interferon- gamma, transfected with a vector encoding one or both of HPV 16 E6 and HLA-A2, pulsed with the ⁇ 6 2 9-38 peptide, or a combination thereof).
  • antigenic specificity means that the TCR can specifically bind to and immunologically recognize HPV 16 E6 with high avidity.
  • a TCR may be considered to have "antigenic specificity" for HPV 16 E6 if T cells expressing the TCR secrete at least about 200 pg/mL or more (e.g., 200 pg/mL or more, 300 pg/mL or more, 400 pg/mL or more, 500 pg/mL or more, 600 pg/mL or more, 700 pg/mL or more, 1000 pg/mL or more, 5,000 pg/mL or more, 7,000 pg/mL or more, 10,000 pg/mL or more, or 20,000 pg/mL or more) of interferon gamma (IFN- ⁇ ) upon co-culture with antigen- negative HLA-A2+ target cells pulsed with a low concentration of HPV 16 E6 peptid
  • IFN- ⁇ interferon gamma
  • a TCR may be considered to have "antigenic specificity" for HPV 16 E6 if T cells expressing the TCR secrete at least twice as much IFN- ⁇ as the untransduced peripheral blood lymphocyte (PBL) background level of IFN- ⁇ upon co- culture with antigen-negative HLA-A2+ target cells pulsed with a low concentration of HPV 16 E6 peptide.
  • PBL peripheral blood lymphocyte
  • Cells expressing the inventive TCRs may also secrete IFN- ⁇ upon co-culture with antigen-negative HLA-A2+ target cells pulsed with higher concentrations of HPV 16 E6 peptide.
  • the invention provides a TCR comprising two polypeptides (i.e., polypeptide chains), such as an alpha (a) chain of a TCR, a beta ( ⁇ ) chain of a TCR, a gamma ( ⁇ ) chain of a TCR, a delta (5) chain of a TCR, or a combination thereof.
  • polypeptides of the inventive TCR can comprise any amino acid sequence, provided that the TCR has antigenic specificity for HPV 16 E6.
  • the TCR comprises two polypeptide chains, each of which comprises a human variable region comprising a complementarity determining region (CDR)1, a CDR2, and a CDR3 of a TCR.
  • the TCR comprises a first polypeptide chain comprising a CDR1 comprising the amino acid sequence of SEQ ID NO: 3 (CDR1 of a chain), a CDR2 comprising the amino acid sequence of SEQ ID NO: 4 (CDR2 of a chain), and a CDR3 comprising the amino acid sequence of SEQ ID NO: 5 (CDR3 of a chain), and a second polypeptide chain comprising a CDR1 comprising the amino acid sequence of SEQ ID NO: 6 (CDR1 of ⁇ chain), a CDR2 comprising the amino acid sequence of SEQ ID NO: 7 (CDR2 of ⁇ chain), and a CDR3 comprising the amino acid sequence of SEQ ID NO: 8 (CDR3 of ⁇ chain
  • the inventive TCR can comprise any one or more of the amino acid sequences selected from the group consisting of SEQ ID NOs: 3-8.
  • the TCR comprises the amino acid sequences of SEQ ID NOs: 3-5 or SEQ ID NOs: 6-8.
  • the TCR comprises the amino acid sequences of SEQ ID NOs: 3-8.
  • the TCR can comprise an amino acid sequence of a variable region of a TCR comprising the CDRs set forth above.
  • the TCR can comprise the amino acid sequence of SEQ ID NO: 9 (the variable region of an a chain), SEQ ID NO: 10 (the variable region of a ⁇ chain), or both SEQ ID NOs: 9 and 10.
  • the inventive TCR comprises the amino acid sequences of both SEQ ID NOs: 9 and 10.
  • the inventive TCRs may further comprise a constant region derived from any suitable species such as, e.g., human or mouse.
  • the inventive TCRs further comprise a murine constant region.
  • the TCR can comprise the amino acid sequence of SEQ ID NO: 15 (the constant region of a murine a chain), SEQ ID NO: 16 (the constant region of a murine ⁇ chain), or both SEQ ID NOs: 15 and 16.
  • the inventive TCRs are chimeric TCRs comprising both a human variable region and a murine constant region.
  • the inventive chimeric TCR may comprise a combination of a variable region and a constant region.
  • the TCR can comprise an alpha chain comprising the amino acid sequences of both of SEQ ID NO: 9 (the variable region of a human a chain) and SEQ ID NO: 15 (the constant region of a murine a chain), a beta chain comprising the amino acid sequence of both of SEQ ID NO: 10 (the variable region of a human ⁇ chain) and SEQ ID NO: 16 (the constant region of a murine ⁇ chain), or all of the amino acid sequences of SEQ ID NOs: 9-10 and 15-16.
  • CDR complementarity determining region
  • the chimeric TCR can comprise an a chain of a TCR and a ⁇ chain of a TCR.
  • Each of the a chain and ⁇ chain of the inventive chimeric TCR can independently comprise any amino acid sequence.
  • the a chain comprises the human variable region of an a chain and the murine constant region of an a chain as set forth above.
  • the inventive chimeric TCR can comprise the amino acid sequence of SEQ ID NO: 17.
  • An a chain of this type can be paired with any ⁇ chain of a TCR.
  • the ⁇ chain of the inventive chimeric TCR comprises the human variable region of a ⁇ chain and the murine constant region of a ⁇ chain as set forth above.
  • the inventive chimeric TCR can comprise the amino acid sequence of SEQ ID NO: 18.
  • the inventive chimeric TCR therefore, can comprise the amino acid sequence of SEQ ID NO: 17, SEQ ID NO: 18, or both SEQ ID NOs: 17 and 18.
  • the inventive chimeric TCR comprises the amino acid sequences of both SEQ ID NOs: 17 and 18.
  • the TCR is a human TCR.
  • the human TCR may comprise any of the CDR regions as described herein with respect to other aspects of the invention.
  • an embodiment of the invention provides an isolated or purified TCR having antigenic specificity for HPV 16 E6 and comprising the amino acid sequences of SEQ ID NOs: 3-8.
  • the human TCR may comprise any of the variable regions described herein with respect to other aspects of the invention.
  • the inventive human TCRs further comprise a human constant region.
  • the human TCR can comprise the amino acid sequence of SEQ ID NO: 13 (the constant region of a human a chain), SEQ ID NO: 14 (the constant region of a human ⁇ chain), or both SEQ ID NOs: 13 and 14.
  • the inventive human TCR may comprise a combination of a variable region and a constant region.
  • the TCR can comprise an alpha chain comprising the amino acid sequences of both SEQ ID NO: 9 (the variable region of a human a chain) and SEQ ID NO: 13 (the constant region of a human a chain), a beta chain comprising the amino acid sequences of both SEQ ID NO: 10 (the variable region of a human ⁇ chain) and SEQ ID NO: 14 (the constant region of a human ⁇ chain), or all of the amino acid sequences of SEQ ID NOs: 9-10 and 13-14.
  • the human TCR can comprise an a chain of a TCR and a ⁇ chain of a TCR.
  • Each of the a chain and ⁇ chain of the inventive human TCR can independently comprise any amino acid sequence.
  • the a chain comprises the human variable region of an a chain and the human constant region of an a chain as set forth above.
  • the inventive human TCR can comprise the amino acid sequence of SEQ ID NO: 1 1.
  • An a chain of this type can be paired with any ⁇ chain of a TCR.
  • the ⁇ chain of the inventive human TCR comprises the human variable region of a ⁇ chain and the human constant region of a ⁇ chain as set forth above.
  • the inventive human TCR can comprise the amino acid sequence of SEQ ID NO: 12.
  • the inventive human TCR therefore, can comprise the amino acid sequence of SEQ ID NO: 1 1, SEQ ID NO: 12, or both SEQ ID NOs: 1 1 and 12.
  • the inventive human TCR comprises the amino acid sequences of both SEQ ID NOs: 11 and 12.
  • polypeptide comprising a functional portion of any of the TCRs (or functional variants thereof) described herein.
  • polypeptide as used herein includes oligopeptides and refers to a single chain of amino acids connected by one or more peptide bonds.
  • the functional portion can be any portion comprising contiguous amino acids of the TCR (or functional variant thereof) of which it is a part, provided that the functional portion specifically binds to HPV 16 E6.
  • the term "functional portion" when used in reference to a TCR (or functional variant thereof) refers to any part or fragment of the TCR (or functional variant thereof) of the invention, which part or fragment retains the biological activity of the TCR (or functional variant thereof) of which it is a part (the parent TCR or parent functional variant thereof).
  • Functional portions encompass, for example, those parts of a TCR (or functional variant thereof) that retain the ability to specifically bind to HPV 16 E6 (e.g., in an HLA-A2-dependent manner), or detect, treat, or prevent cancer, to a similar extent, the same extent, or to a higher extent, as the parent TCR (or functional variant thereof).
  • the functional portion can comprise, for instance, about 10%, 25%, 30%, 50%, 68%, 80%, 90%, 95%, or more, of the parent TCR (or functional variant thereof).
  • the functional portion can comprise additional amino acids at the amino or carboxy terminus of the portion, or at both termini, which additional amino acids are not found in the amino acid sequence of the parent TCR or functional variant thereof.
  • the additional amino acids do not interfere with the biological function of the functional portion, e.g., specifically binding to HPV 16 E6; and/or having the ability to detect cancer, treat or prevent cancer, etc. More desirably, the additional amino acids enhance the biological activity, as compared to the biological activity of the parent TCR or functional variant thereof.
  • the polypeptide can comprise a functional portion of either or both of the a and ⁇ chains of the TCRs or functional variant thereof of the invention, such as a functional portion comprising one of more of CDR1 , CDR2, and CDR3 of the variable region(s) of the a chain and/or ⁇ chain of a TCR or functional variant thereof of the invention.
  • the polypeptide can comprise a functional portion comprising the amino acid sequence of SEQ ID NO: 3 (CDR1 of a chain), 4 (CDR2 of a chain), 5 (CDR3 of a chain), 6 (CDR1 of ⁇ chain), 7 (CDR2 of ⁇ chain), 8 (CDR3 of ⁇ chain), or a combination thereof.
  • the inventive polypeptide comprises a functional portion comprising the amino acid sequences of SEQ ID NOs: 3-5; 6-8; or all of SEQ ID NOs: 3-8. More preferably, the polypeptide comprises a functional portion comprising the amino acid sequences of all of SEQ ID NOs: 3-8.
  • the inventive polypeptide can comprise, for instance, the variable region of the inventive TCR or functional variant thereof comprising a combination of the CDR regions set forth above.
  • the polypeptide can comprise the amino acid sequence of SEQ ID NO: 9 (the variable region of an a chain), SEQ ID NO: 10 (the variable region of a ⁇ chain), or both SEQ ID NOs: 9 and 10.
  • the polypeptide comprises the amino acid sequences of both SEQ ID NOs: 9 and 10.
  • the inventive polypeptide may further comprise a constant region derived from any suitable species such as, e.g., human or mouse.
  • the polypeptide can comprise the amino acid sequence of SEQ ID NO: 13 (the constant region of a human a chain), SEQ ID NO: 14 (the constant region of a human ⁇ chain), SEQ ID NO: 15 (the constant region of a murine a chain), SEQ ID NO: 16 (the constant region of a murine ⁇ chain), both SEQ ID NOs: 13 and 14, or both SEQ ID NOs: 15 and 16.
  • the polypeptide comprises the amino acid sequences of both SEQ ID NOs: 13 and 14 or both SEQ ID NOs: 15 and 16.
  • the inventive polypeptide may comprise a combination of a variable region and a constant region.
  • the polypeptide can comprise the amino acid sequences of both SEQ ID NOs: 9 and 15, both SEQ ID NOs: 9 and 13, both SEQ ID NOs: 10 and 16, both SEQ ID NOs: 10 and 14, all of SEQ ID NOs: 9-10 and 15-16, or all of SEQ ID NOs: 9-10 and 13-14.
  • the inventive polypeptide can comprise the entire length of an a or ⁇ chain of one of the TCRs or functional variant thereof described herein.
  • the inventive polypeptide can comprise an amino acid sequence of SEQ ID NOs: 11 , 12, 17, or 18.
  • the polypeptide of the invention can comprise a and ⁇ chains of the TCRs or functional variants thereof described herein.
  • the inventive polypeptide can comprise the amino acid sequences of both SEQ ID NOs: 1 1 and 12 or both SEQ ID NOs: 17 and 18, both SEQ ID NOs: 11 and 18, or both SEQ ID NOs: 17 and 12.
  • the polypeptide comprises the amino acid sequences of both SEQ ID NOs: 1 1 and 12 or both SEQ ID NOs: 17 and 18.
  • the invention further provides a protein comprising at least one of the
  • polypeptides described herein are polypeptides described herein.
  • protein is meant a molecule comprising one or more polypeptide chains.
  • the protein of the invention can comprise a first polypeptide chain comprising the amino acid sequences of SEQ ID NOs: 3-5 and a second polypeptide chain comprising the amino acid sequence of SEQ ID NOs: 6-8.
  • the protein of the invention can comprise a first polypeptide chain comprising the amino acid sequence of SEQ ID NO: 9, and a second polypeptide chain comprising the amino acid sequence of SEQ ID NO: 10.
  • the protein of the invention can, for example, comprise a first polypeptide chain comprising the amino acid sequence of both SEQ ID NO: 9 and 13 or both SEQ ID NOs: 9 and 15, and a second polypeptide chain comprising the amino acid sequence of both SEQ ID NOs: 10 and 14 or both SEQ ID NOs: 10 and 16.
  • the protein of the invention can, for example, comprise a first polypeptide chain comprising the amino acid sequence of SEQ ID NO: 1 1 or 17, and a second polypeptide chain comprising the amino acid sequence of SEQ ID NO: 12 or 18.
  • the protein of the invention can be a TCR.
  • the protein comprises a single polypeptide chain comprising the amino acid sequences of SEQ ID NO: 1 1 and 12 or SEQ ID NO: 17 and 18, or if the first and/or second polypeptide chain(s) of the protein further comprise(s) other amino acid sequences, e.g., an amino acid sequence encoding an immunoglobulin or a portion thereof, then the inventive protein can be a fusion protein.
  • the invention also provides a fusion protein comprising at least one of the inventive polypeptides described herein along with at least one other polypeptide.
  • the other polypeptide can exist as a separate polypeptide of the fusion protein, or can exist as a polypeptide, which is expressed in frame (in tandem) with one of the inventive polypeptides described herein.
  • the other polypeptide can encode any peptidic or proteinaceous molecule, or a portion thereof, including, but not limited to an immunoglobulin, CD3, CD4, CD8, an MHC molecule, a CD1 molecule, e.g., CD la, CD lb, CDlc, CD Id, etc.
  • the fusion protein can comprise one or more copies of the inventive polypeptide and/or one or more copies of the other polypeptide.
  • the fusion protein can comprise 1 , 2, 3, 4, 5, or more, copies of the inventive polypeptide and/or of the other polypeptide.
  • Suitable methods of making fusion proteins are known in the art, and include, for example, recombinant methods. See, for instance, Choi et al., Mol. Biotechnol. 31 : 193- 202 (2005).
  • the TCRs (and functional portions and functional variants thereof), polypeptides, and proteins of the invention may be expressed as a single protein comprising a linker peptide linking the a chain and the ⁇ chain.
  • the TCRs (and functional variants and functional portions thereof), polypeptides, and proteins of the invention comprising the amino acid sequences of SEQ ID NO: 1 1 and 12 or SEQ ID NO: 17 and 18 may further comprise a linker peptide.
  • the linker peptide may advantageously facilitate the expression of a recombinant TCR (including functional portions and functional variants thereof), polypeptide, and/or protein in a host cell.
  • the linker peptide may comprise any suitable amino acid sequence.
  • the linker peptide may comprise the amino acid sequence of SEQ ID NO: 37.
  • the linker peptide may be cleaved, resulting in separated a and ⁇ chains.
  • the protein of the invention can be a recombinant antibody comprising at least one of the inventive polypeptides described herein.
  • "recombinant antibody” refers to a recombinant (e.g., genetically engineered) protein comprising at least one of the polypeptides of the invention and a polypeptide chain of an antibody, or a portion thereof.
  • the polypeptide of an antibody, or portion thereof can be a heavy chain, a light chain, a variable or constant region of a heavy or light chain, a single chain variable fragment (scFv), or an Fc, Fab, or F(ab) 2 ' fragment of an antibody, etc.
  • the polypeptide chain of an antibody, or portion thereof can exist as a separate polypeptide of the recombinant antibody.
  • polypeptide chain of an antibody, or portion thereof can exist as a polypeptide, which is expressed in frame (in tandem) with the polypeptide of the invention.
  • the polypeptide of an antibody, or portion thereof can be a polypeptide of any antibody or any antibody fragment, including any of the antibodies and antibody fragments described herein.
  • Functional variants encompass, for example, those variants of the TCR, polypeptide, or protein described herein (the parent TCR, polypeptide, or protein) that retain the ability to specifically bind to HPV 16 E6 for which the parent TCR has antigenic specificity or to which the parent polypeptide or protein specifically binds, to a similar extent, the same extent, or to a higher extent, as the parent TCR, polypeptide, or protein.
  • the functional variant can, for instance, be at least about 30%, 50%, 75%, 80%, 90%, 95%, 96%, 97%, 98%, 99% or more identical in amino acid sequence to the parent TCR, polypeptide, or protein.
  • the functional variant can, for example, comprise the amino acid sequence of the parent TCR, polypeptide, or protein with at least one conservative amino acid substitution.
  • Conservative amino acid substitutions are known in the art, and include amino acid substitutions in which one amino acid having certain physical and/or chemical properties is exchanged for another amino acid that has the same chemical or physical properties.
  • the conservative amino acid substitution can be an acidic amino acid substituted for another acidic amino acid (e.g., Asp or Glu), an amino acid with a nonpolar side chain substituted for another amino acid with a nonpolar side chain (e.g., Ala, Gly, Val, He, Leu, Met, Phe, Pro, Trp, Val, etc.), a basic amino acid substituted for another basic amino acid (Lys, Arg, etc.), an amino acid with a polar side chain substituted for another amino acid with a polar side chain (Asn, Cys, Gin, Ser, Thr, Tyr, etc.), etc.
  • an amino acid with a nonpolar side chain substituted for another amino acid with a nonpolar side chain e.g., Ala, Gly, Val, He, Leu, Met, Phe, Pro, Trp, Val, etc.
  • a basic amino acid substituted for another basic amino acid e.g., Arg, etc.
  • the functional variants can comprise the amino acid sequence of the parent TCR, polypeptide, or protein with at least one non-conservative amino acid substitution. In this case, it is preferable for the non-conservative amino acid
  • the non-conservative amino acid substitution enhances the biological activity of the functional variant, such that the biological activity of the functional variant is increased as compared to the parent TCR, polypeptide, or protein.
  • the TCR (or functional variant thereof), polypeptide, or protein can consist essentially of the specified amino acid sequence or sequences described herein, such that other components of the TCR (or functional variant thereof), polypeptide, or protein, e.g., other amino acids, do not materially change the biological activity of the TCR (or functional variant thereof), polypeptide, or protein.
  • the inventive TCR (or functional variant thereof), polypeptide, or protein can, for example, consist essentially of the amino acid sequence of SEQ ID NO: 1 1 , 12, 17, or 18, both SEQ ID NOs: 1 1 and 12, both SEQ ID NOs: 17 and 18, both SEQ ID NOs: 11 and 18, or both SEQ ID NOs: 17 and 12.
  • inventive TCRs can consist essentially of the amino acid sequence(s) of SEQ ID NO: 9, 10, or both SEQ ID NOs: 9 and 10.
  • inventive TCRs can consist essentially of the amino acid sequence of SEQ ID NO: 3 (CDR1 of a chain), SEQ ID NO: 4 (CDR2 of a chain), SEQ ID NO: 5 (CDR3 of a chain), SEQ ID NO: 6 (CDR1 of ⁇ chain), SEQ ID NO: 7 (CDR2 of ⁇ chain), SEQ ID NO: 8 (CDR3 of ⁇ chain), or any combination thereof, e.g., SEQ ID NOs: 3-5; 6-8; or 3-8.
  • the TCRs, polypeptides, and proteins of the invention can be of any length, i.e., can comprise any number of amino acids, provided that the TCRs, polypeptides, or proteins (or functional variants thereof) retain their biological activity, e.g., the ability to specifically bind to HPV 16 E6; detect cancer, HPV 16 infection, or HPV-positive premalignancy in a mammal; or treat or prevent cancer, HPV 16 infection, or HPV-positive premalignancy in a mammal, etc.
  • the polypeptide can be in the range of from about 50 to about 5000 amino acids long, such as 50, 70, 75, 100, 125, 150, 175, 200, 300, 400, 500, 600, 700, 800, 900, 1000 or more amino acids in length.
  • the polypeptides of the invention also include oligopeptides.
  • the TCRs, polypeptides, and proteins of the invention (including functional variants thereof) of the invention can comprise synthetic amino acids in place of one or more naturally-occurring amino acids.
  • synthetic amino acids include, for example, aminocyclohexane carboxylic acid, norleucine, a-amino n-decanoic acid, homoserine, S-acetylaminomethyl-cysteine, trans-3- and trans-4-hydroxyproline, 4- aminophenylalanine, 4- nitrophenylalanine, 4-chlorophenylalanine, 4-carboxyphenylalanine, ⁇ -phenylserine ⁇ -hydroxyphenylalanine, phenylglycine, a-naphthylalanine,
  • TCRs, polypeptides, and proteins of the invention can be glycosylated, amidated, carboxylated, phosphorylated, esterified, N- acylated, cyclized via, e.g., a disulfide bridge, or converted into an acid addition salt and/or optionally dimerized or polymerized, or conjugated.
  • TCR, polypeptide, and/or protein of the invention can be obtained by methods known in the art. Suitable methods of de novo synthesizing polypeptides and proteins are described in references, such as Chan et al., Fmoc Solid Phase Peptide Synthesis, Oxford University Press, Oxford, United Kingdom, 2005; Peptide and Protein Drug Analysis, ed. Reid, R., Marcel Dekker, Inc., 2000; Epitope
  • polypeptides and proteins can be recombinantly produced using the nucleic acids described herein using standard recombinant methods. See, for instance, Green and Sambrook, Molecular Cloning: A Laboratory Manual, 4 th ed., Cold Spring Harbor Press, Cold Spring Harbor, NY 2012; and Ausubel et al., Current Protocols in Molecular Biology, Greene Publishing Associates and John Wiley & Sons, NY, 1994.
  • TCRs, polypeptides, and proteins of the invention can be isolated and/or purified from a source, such as a plant, a bacterium, an insect, a mammal, e.g., a rat, a human, etc. Methods of isolation and purification are well- known in the art.
  • a source such as a plant, a bacterium, an insect, a mammal, e.g., a rat, a human, etc. Methods of isolation and purification are well- known in the art.
  • the TCRs, polypeptides, and/or proteins described herein (including functional variants thereof) can be commercially synthesized by companies, such as Synpep (Dublin, CA), Peptide Technologies Corp. (Gaithersburg, MD), and Multiple Peptide Systems (San Diego, CA).
  • the inventive TCRs (including functional variants thereof), polypeptides, and proteins can be synthetic, recombinant, isolated, and/or purified.
  • conjugates e.g., bioconjugates, comprising any of the inventive TCRs, polypeptides, or proteins (including any of the functional variants thereof), nucleic acids, recombinant expression vectors, host cells, populations of host cells, or antibodies, or antigen binding portions thereof.
  • Conjugates, as well as methods of synthesizing conjugates in general, are known in the art (See, for instance, Hudecz, R, Methods Mol. Biol. 298: 209-223 (2005) and Kirin et al., Inorg Chem. 44(15): 5405-5415 (2005)).
  • nucleic acid comprising a nucleotide sequence that encodes any of the TCRs, polypeptides, and proteins herein.
  • nucleic acid includes “polynucleotide,” “oligonucleotide,” and “nucleic acid molecule,” and generally means a polymer of DNA or RNA, which can be single-stranded or double- stranded, synthesized or obtained (e.g., isolated and/or purified) from natural sources, which can contain natural, non-natural or altered nucleotides, and which can contain a natural, non- natural or altered internucleotide linkage, such as a phosphoroamidate linkage or a phosphorothioate linkage, instead of the phosphodiester found between the nucleotides of an unmodified oligonucleotide.
  • the nucleic acid comprises complementary DNA (cDNA). It is generally preferred that the nucleic acid does not comprise any insertions, deletions, inversions, and/or substitutions. However, it may be suitable in some instances, as discussed herein, for the nucleic acid to comprise one or more insertions, deletions, inversions, and/or substitutions.
  • the nucleic acids of the invention are recombinant.
  • the term “recombinant” refers to (i) molecules that are constructed outside living cells by joining natural or synthetic nucleic acid segments to nucleic acid molecules that can replicate in a living cell, or (ii) molecules that result from the replication of those described in (i) above.
  • the replication can be in vitro replication or in vivo replication.
  • the nucleic acids can be constructed based on chemical synthesis and/or enzymatic ligation reactions using procedures known in the art. See, for example, Green and Sambrook et al., supra, and Ausubel et al., supra.
  • a nucleic acid can be chemically synthesized using naturally occurring nucleotides or variously modified nucleotides designed to increase the biological stability of the molecules or to increase the physical stability of the duplex formed upon hybridization (e.g., phosphorothioate derivatives and acridine substituted nucleotides).
  • modified nucleotides that can be used to generate the nucleic acids include, but are not limited to, 5-fluorouracil, 5-bromouracil, 5- chlorouracil, 5-iodouracil, hypoxanthine, xanthine, 4-acetylcytosine, 5- (carboxyhydroxymethyl) uracil, 5-carboxymethylaminomethyl-2-thiouridine, 5- carboxymethylaminomethyluracil, dihydrouracil, beta-D-galactosylqueosine, inosine, N 6 - isopentenyladenine, 1 -methylguanine, 1 -methylinosine, 2,2-dimethylguanine, 2- methyladenine, 2-methylguanine, 3-methylcytosine, 5-methylcytosine, N 6 -substituted adenine, 7-methylguanine, 5-methylaminomethyluracil, 5-methoxyaminomethyl-2-thiouracil, beta-D-mannos
  • the nucleic acid can comprise any nucleotide sequence which encodes any of the TCRs, polypeptides, proteins, or functional functional variants thereof described herein.
  • the nucleotide sequence may comprise, consist, or consist essentially of all of SEQ ID NOs: 31-36 (encoding CDRla, CDR2a, CDR3a, CDRl p, CDR2p, CDR3p, respectively); all of SEQ ID NOs: 31-33; all of SEQ ID NOs: 34-36; both of SEQ ID NOs: 19-20 (encoding variable regions of a and ⁇ chains, respectively); both of SEQ ID NOs: 23-24 (encoding human constant region of a and ⁇ chains, respectively); both of SEQ ID NOs: 25-26 (encoding murine constant region of a and ⁇ chains, respectively), all of SEQ ID NOs: 19-20 and 23-24, all of SEQ ID NOs: 19-20 and 25-26, both of SEQ ID NOs:
  • the nucleic acid comprises a non-natural nucleotide sequence.
  • a nucleotide sequence may be considered to be "non-natural” if the nucleotide sequence is not found in nature.
  • the nucleotide sequence may be codon-optimized. Without being bound to a particular theory or mechanism, it is believed that codon optimization of the nucleotide sequence increases the translation efficiency of the mRNA transcripts. Codon optimization of the nucleotide sequence may involve substituting a native codon for another codon that encodes the same amino acid, but can be translated by tRNA that is more readily available within a cell, thus increasing translation efficiency.
  • the codon-optimized nucleotide sequence may comprise, consist, or consist essentially of SEQ ID NO: 38 (variable region of a chain), SEQ ID NO: 39 (variable region of ⁇ chain), or SEQ ID NOs: 38 and 39.
  • the invention also provides a nucleic acid comprising a nucleotide sequence which is complementary to the nucleotide sequence of any of the nucleic acids described herein or a nucleotide sequence which hybridizes under stringent conditions to the nucleotide sequence of any of the nucleic acids described herein.
  • the nucleotide sequence which hybridizes under stringent conditions preferably hybridizes under high stringency conditions.
  • high stringency conditions is meant that the nucleotide sequence specifically hybridizes to a target sequence (the nucleotide sequence of any of the nucleic acids described herein) in an amount that is detectably stronger than non-specific hybridization.
  • High stringency conditions include conditions which would distinguish a polynucleotide with an exact complementary sequence, or one containing only a few scattered mismatches from a random sequence that happened to have a few small regions (e.g., 3-10 bases) that matched the nucleotide sequence.
  • Relatively high stringency conditions would include, for example, low salt and/or high temperature conditions, such as provided by about 0.02-0.1 M NaCl or the equivalent, at temperatures of about 50-70 °C.
  • Such high stringency conditions tolerate little, if any, mismatch between the nucleotide sequence and the template or target strand, and are particularly suitable for detecting expression of any of the inventive TCRs (including functional portions and functional variants thereof). It is generally appreciated that conditions can be rendered more stringent by the addition of increasing amounts of formamide.
  • the invention also provides a nucleic acid comprising a nucleotide sequence that is at least about 70% or more, e.g., about 80%, about 90%, about 91%, about 92%, about 93%, about 94%, about 95%, about 96%, about 97%, about 98%, or about 99% identical to any of the nucleic acids described herein.
  • the nucleic acids of the invention can be incorporated into a recombinant expression vector.
  • the invention provides recombinant expression vectors comprising any of the nucleic acids of the invention.
  • the recombinant expression vector comprises a nucleotide sequence encoding the a chain, the ⁇ chain, and linker peptide.
  • the recombinant expression vector comprises a codon-optimized nucleotide sequence comprising SEQ ID NO: 29 (encoding chimeric a and ⁇ chains SEQ ID NOs: 17 and 18 with a linker positioned between them).
  • the term "recombinant expression vector” means a genetically-modified oligonucleotide or polynucleotide construct that permits the expression of an mRNA, protein, polypeptide, or peptide by a host cell, when the construct comprises a nucleotide sequence encoding the mRNA, protein, polypeptide, or peptide, and the vector is contacted with the cell under conditions sufficient to have the mRNA, protein, polypeptide, or peptide expressed within the cell.
  • the vectors of the invention are not naturally-occurring as a whole. However, parts of the vectors can be naturally-occurring.
  • the inventive recombinant expression vectors can comprise any type of nucleotides, including, but not limited to DNA and RNA, which can be single-stranded or double-stranded, synthesized or obtained in part from natural sources, and which can contain natural, non-natural or altered nucleotides.
  • the recombinant expression vectors can comprise naturally-occurring, non- naturally-occurring internucleotide linkages, or both types of linkages.
  • the non- naturally occurring or altered nucleotides or internucleotide linkages does not hinder the transcription or replication of the vector.
  • the recombinant expression vector of the invention can be any suitable recombinant expression vector, and can be used to transform or transfect any suitable host cell.
  • Suitable vectors include those designed for propagation and expansion or for expression or both, such as plasmids and viruses.
  • the vector can be selected from the group consisting of the pUC series (Fermentas Life Sciences), the pBluescript series (Stratagene, LaJolla, CA), the pET series (Novagen, Madison, WI), the pGEX series (Pharmacia Biotech, Uppsala, Sweden), and the pEX series (Clontech, Palo Alto, CA).
  • Bacteriophage vectors such as XGTIQ, XGTl 1 , ⁇ Za II (Stratagene), ⁇ and ⁇ 149, also can be used.
  • plant expression vectors include pBIOl , pBI101.2, pBI101.3, pBI121 and pBIN19
  • the recombinant expression vector is a viral vector, e.g., a retroviral vector.
  • the recombinant expression vector is an MSGV1 vector.
  • an MSGV1 vector comprising a codon-optimized nucleotide sequence encoding a chimeric TCR comprising SEQ ID NOs: 17 and 18 of the invention comprises the nucleotide sequence of SEQ ID NO: 30.
  • the recombinant expression vectors of the invention can be prepared using standard recombinant DNA techniques described in, for example, Green and Sambrook et al., supra, and Ausubel et al., supra.
  • Constructs of expression vectors, which are circular or linear, can be prepared to contain a replication system functional in a prokaryotic or eukaryotic host cell.
  • Replication systems can be derived, e.g., from ColEl, 2 ⁇ plasmid, ⁇ , SV40, bovine papillomavirus, and the like.
  • the recombinant expression vector comprises regulatory sequences, such as transcription and translation initiation and termination codons, which are specific to the type of host cell (e.g., bacterium, fungus, plant, or animal) into which the vector is to be introduced, as appropriate and taking into consideration whether the vector is DNA- or RNA- based.
  • regulatory sequences such as transcription and translation initiation and termination codons, which are specific to the type of host cell (e.g., bacterium, fungus, plant, or animal) into which the vector is to be introduced, as appropriate and taking into consideration whether the vector is DNA- or RNA- based.
  • the recombinant expression vector can include one or more marker genes, which allow for selection of transformed or transfected host cells.
  • Marker genes include biocide resistance, e.g., resistance to antibiotics, heavy metals, etc., complementation in an auxotrophic host cell to provide prototrophy, and the like.
  • Suitable marker genes for the inventive expression vectors include, for instance, neomycin/G418 resistance genes, hygromycin resistance genes, histidinol resistance genes, tetracycline resistance genes, and ampicillin resistance genes.
  • the recombinant expression vector can comprise a native or normative promoter operably linked to the nucleotide sequence encoding the TCR, polypeptide, or protein (including functional variants thereof), or to the nucleotide sequence which is complementary to or which hybridizes to the nucleotide sequence encoding the TCR, polypeptide, or protein (including functional variants thereof).
  • a native or normative promoter operably linked to the nucleotide sequence encoding the TCR, polypeptide, or protein (including functional variants thereof), or to the nucleotide sequence which is complementary to or which hybridizes to the nucleotide sequence encoding the TCR, polypeptide, or protein (including functional variants thereof).
  • promoters e.g., strong, weak, inducible, tissue-specific and developmental-specific, is within the ordinary skill of the artisan.
  • the combining of a nucleotide sequence with a promoter is also within the skill of the artisan.
  • the promoter can be a non- viral promoter or a viral promoter, e.g., a cytomegalovirus (CMV) promoter, an SV40 promoter, an RSV promoter, and a promoter found in the long-terminal repeat of the murine stem cell virus.
  • a viral promoter e.g., a cytomegalovirus (CMV) promoter, an SV40 promoter, an RSV promoter, and a promoter found in the long-terminal repeat of the murine stem cell virus.
  • CMV cytomegalovirus
  • the inventive recombinant expression vectors can be designed for either transient expression, for stable expression, or for both. Also, the recombinant expression vectors can be made for constitutive expression or for inducible expression. Further, the recombinant expression vectors can be made to include a suicide gene.
  • suicide gene refers to a gene that causes the cell expressing the suicide gene to die.
  • the suicide gene can be a gene that confers sensitivity to an agent, e.g., a drug, upon the cell in which the gene is expressed, and causes the cell to die when the cell is contacted with or exposed to the agent.
  • agent e.g., a drug
  • HSV Herpes Simplex Virus
  • TK thymidine kinase gene
  • cytosine daminase purine nucleoside
  • Another embodiment of the invention further provides a host cell comprising any of the recombinant expression vectors described herein.
  • the term "host cell” refers to any type of cell that can contain the inventive recombinant expression vector.
  • the host cell can be a eukaryotic cell, e.g., plant, animal, fungi, or algae, or can be a prokaryotic cell, e.g., bacteria or protozoa.
  • the host cell can be a cultured cell or a primary cell, i.e., isolated directly from an organism, e.g., a human.
  • the host cell can be an adherent cell or a suspended cell, i.e., a cell that grows in suspension.
  • Suitable host cells are known in the art and include, for instance, DH5a E. coli cells, Chinese hamster ovarian cells, monkey VERO cells, COS cells, HEK293 cells, and the like.
  • the host cell is preferably a prokaryotic cell, e.g., a DH5a cell.
  • the host cell is preferably a mammalian cell. Most preferably, the host cell is a human cell.
  • the host cell can be of any cell type, can originate from any type of tissue, and can be of any developmental stage, the host cell preferably is a peripheral blood lymphocyte (PBL) or a peripheral blood mononuclear cell (PBMC). More preferably, the host cell is a T cell.
  • PBL peripheral blood lymphocyte
  • PBMC peripheral blood mononuclear cell
  • the T cell can be any T cell, such as a cultured T cell, e.g., a primary T cell, or a T cell from a cultured T cell line, e.g., Jurkat, SupTl, etc., or a T cell obtained from a mammal. If obtained from a mammal, the T cell can be obtained from numerous sources, including but not limited to blood, bone marrow, lymph node, the thymus, or other tissues or fluids. T cells can also be enriched for or purified.
  • the T cell is a human T cell. More preferably, the T cell is a T cell isolated from a human.
  • the T cell can be any type of T cell and can be of any developmental stage, including but not limited to, CD4 + /CD8 + double positive T cells, CD4 + helper T cells, e.g., Thi and Th 2 cells, CD4+ T cells, CD8 + T cells (e.g., cytotoxic T cells), tumor infiltrating lymphocytes (TILs), memory T cells (e.g., central memory T cells and effector memory T cells), na ' ive T cells, and the like.
  • CD4 + /CD8 + double positive T cells CD4 + helper T cells, e.g., Thi and Th 2 cells, CD4+ T cells, CD8 + T cells (e.g., cytotoxic T cells), tumor infiltrating lymphocytes (TILs), memory T cells (e.g., central memory T cells and effector memory T cells), na ' ive T cells, and the like.
  • CD4 + /CD8 + double positive T cells CD4 + helper T cells,
  • the population of cells can be a heterogeneous population comprising the host cell comprising any of the recombinant expression vectors described, in addition to at least one other cell, e.g., a host cell (e.g., a T cell), which does not comprise any of the recombinant expression vectors, or a cell other than a T cell, e.g., a B cell, a host cell (e.g., a T cell), which does not comprise any of the recombinant expression vectors, or a cell other than a T cell, e.g., a B cell, a
  • the population of cells can be a substantially homogeneous population, in which the population comprises mainly of host cells (e.g., consisting essentially of) comprising the recombinant expression vector.
  • the population also can be a clonal population of cells, in which all cells of the population are clones of a single host cell comprising a recombinant expression vector, such that all cells of the population comprise the recombinant expression vector.
  • the population of cells is a clonal population comprising host cells comprising a recombinant expression vector as described herein.
  • the numbers of cells in the population may be rapidly expanded. Expansion of the numbers of T cells can be accomplished by any of a number of methods as are known in the art as described in, for example, U.S. Patent
  • the invention further provides an antibody, or antigen binding portion thereof, which specifically binds to a functional portion of any of the TCRs (or functional variant thereof) described herein.
  • the functional portion specifically binds to the cancer antigen, e.g., the functional portion comprising the amino acid sequence SEQ ID NO: 3 (CDR1 of a chain), 4 (CDR2 of a chain), 5 (CDR3 of a chain), 6 (CDR1 of ⁇ chain), 7 (CDR2 of ⁇ chain), 8 (CDR3 of ⁇ chain), SEQ ID NO: 9 (variable region of a chain), SEQ ID NO: 10 (variable region of ⁇ chain), or a combination thereof, e.g., 3-5; 6-8; 3-8; 9; 10; or 9- 10.
  • the functional portion comprises the amino acid sequences of SEQ ID NOs: 3-8 or SEQ ID NOs: 9 and 10.
  • the antibody, or antigen binding portion thereof binds to an epitope which is formed by all 6 CDRs (CDRl -3 of the alpha chain and CDRl-3 of the beta chain).
  • the antibody can be any type of
  • the antibody can be of any isotype, e.g., IgA, IgD, IgE, IgG, IgM, etc.
  • the antibody can be monoclonal or polyclonal.
  • the antibody can be a naturally-occurring antibody, e.g., an antibody isolated and/or purified from a mammal, e.g., mouse, rabbit, goat, horse, chicken, hamster, human, etc.
  • the antibody can be a genetically-engineered antibody, e.g., a humanized antibody or a chimeric antibody.
  • the antibody can be in monomeric or polymeric form.
  • the antibody can have any level of affinity or avidity for the functional portion of the inventive TCR (or functional variant thereof). Desirably, the antibody is specific for the functional portion of the inventive TCR (or functional variants thereof), such that there is minimal cross-reaction with other peptides or proteins.
  • Methods of testing antibodies for the ability to bind to any functional portion or functional variant of the inventive TCR include any antibody- antigen binding assay, such as, for example, radioimmunoassay (RIA), ELISA, Western blot, immunoprecipitation, and competitive inhibition assays (see, e.g., Janeway et al., infra, and U.S. Patent Application Publication No. 2002/0197266 Al).
  • RIA radioimmunoassay
  • ELISA ELISA
  • Western blot Western blot
  • immunoprecipitation immunoprecipitation
  • competitive inhibition assays see, e.g., Janeway et al., infra, and U.S. Patent Application Publication No. 2002/0197266 Al.
  • Suitable methods of making antibodies are known in the art. For instance, standard hybridoma methods are described in, e.g., Kohler and Milstein, Eur. J. Immunol, 5, 51 1-519 (1976), Harlow and Lane (eds.), Antibodies: A Laboratory Manual, CSH Press (1988), and C.A. Janeway et al. (eds.), Immunobiology, 8 Ed., Garland Publishing, New York, NY (201 1)). Alternatively, other methods, such as EBV-hybridoma methods (Haskard and Archer, J. Immunol.
  • Phage display furthermore can be used to generate the antibody of the invention.
  • phage libraries encoding antigen-binding variable (V) domains of antibodies can be generated using standard molecular biology and recombinant DNA techniques (see, e.g., Green and Sambrook et al. (eds.), Molecular Cloning, A Laboratory Manual, 4 th Edition, Cold Spring Harbor Laboratory Press, New York (2012)).
  • Phage encoding a variable region with the desired specificity are selected for specific binding to the desired antigen, and a complete or partial antibody is reconstituted comprising the selected variable domain.
  • Nucleic acid sequences encoding the reconstituted antibody are introduced into a suitable cell line, such as a myeloma cell used for hybridoma production, such that antibodies having the characteristics of monoclonal antibodies are secreted by the cell (see, e.g., Janeway et al., supra, Huse et al., supra, and U.S. Patent 6,265,150).
  • a suitable cell line such as a myeloma cell used for hybridoma production, such that antibodies having the characteristics of monoclonal antibodies are secreted by the cell (see, e.g., Janeway et al., supra, Huse et al., supra, and U.S. Patent 6,265,150).
  • Antibodies can be produced by transgenic mice that are transgenic for specific heavy and light chain immunoglobulin genes. Such methods are known in the art and described in, for example U.S. Patents 5,545,806 and 5,569,825, and Janeway et al., supra.
  • the invention also provides antigen binding portions of any of the antibodies described herein.
  • the antigen binding portion can be any portion that has at least one antigen binding site, such as Fab, F(ab') 2 , dsFv, sFv, diabodies, and triabodies.
  • a single-chain variable region fragment (sFv) antibody fragment which consists of a truncated Fab fragment comprising the variable (V) domain of an antibody heavy chain linked to a V domain of a light antibody chain via a synthetic peptide, can be generated using routine recombinant DNA technology techniques (see, e.g., Janeway et al., supra).
  • disulfide-stabilized variable region fragments (dsFv) can be prepared by recombinant DNA technology (see, e.g., Reiter et al., Protein Engineering, 7, 697-704 (1994)).
  • Antibody fragments of the invention are not limited to these exemplary types of antibody fragments.
  • the antibody, or antigen binding portion thereof can be modified to comprise a detectable label, such as, for instance, a radioisotope, a fluorophore (e.g., fluorescein isothiocyanate (FITC), phycoerythrin (PE)), an enzyme (e.g., alkaline
  • a detectable label such as, for instance, a radioisotope, a fluorophore (e.g., fluorescein isothiocyanate (FITC), phycoerythrin (PE)), an enzyme (e.g., alkaline
  • element particles e.g., gold particles
  • inventive TCRs, polypeptides, proteins, (including functional variants thereof), nucleic acids, recombinant expression vectors, host cells (including populations thereof), and antibodies (including antigen binding portions thereof), can be isolated and/or purified.
  • isolated means having been removed from its natural environment.
  • purified means having been increased in purity, wherein “purity” is a relative term, and not to be necessarily construed as absolute purity. For example, the purity can be at least about 50%, can be greater than 60%, 70%o, 80%, 90%, 95%, or can be 100%.
  • inventive TCRs, polypeptides, proteins (including functional variants thereof), nucleic acids, recombinant expression vectors, host cells (including populations thereof), and antibodies (including antigen binding portions thereof), all of which are collectively referred to as "inventive TCR materials" hereinafter, can be formulated into a composition, such as a pharmaceutical composition.
  • the invention provides a pharmaceutical composition comprising any of the TCRs, polypeptides, proteins, functional portions, functional variants, nucleic acids, expression vectors, host cells (including populations thereof), and antibodies (including antigen binding portions thereof) described herein, and a pharmaceutically acceptable carrier.
  • inventive pharmaceutical composition comprising any of the TCRs, polypeptides, proteins, functional portions, functional variants, nucleic acids, expression vectors, host cells (including populations thereof), and antibodies (including antigen binding portions thereof) described herein, and a pharmaceutically acceptable carrier.
  • compositions containing any of the inventive TCR materials can comprise more than one inventive TCR material, e.g., a polypeptide and a nucleic acid, or two or more different TCRs (including functional portions and functional variants thereof).
  • inventive TCR material e.g., a polypeptide and a nucleic acid
  • two or more different TCRs including functional portions and functional variants thereof.
  • composition can comprise an inventive TCR material in combination with another pharmaceutically active agent(s) or drug(s), such as a chemotherapeutic agents, e.g., asparaginase, busulfan, carboplatin, cisplatin, daunorubicin, doxorubicin, fluorouracil, gemcitabine, hydroxyurea, methotrexate, paclitaxel, rituximab, vinblastine, vincristine, etc.
  • chemotherapeutic agents e.g., asparaginase, busulfan, carboplatin, cisplatin, daunorubicin, doxorubicin, fluorouracil, gemcitabine, hydroxyurea, methotrexate, paclitaxel, rituximab, vinblastine, vincristine, etc.
  • the carrier is a pharmaceutically acceptable carrier.
  • the carrier can be any of those conventionally used for the particular inventive TCR material under consideration.
  • Suitable formulations may include any of those for oral, parenteral, subcutaneous, intravenous, intramuscular, intraarterial, intrathecal, or interperitoneal administration. More than one route can be used to administer the inventive TCR materials, and in certain instances, a particular route can provide a more immediate and more effective response than another route.
  • the inventive TCR material is administered by injection, e.g., intravenously.
  • the pharmaceutically acceptable carrier for the cells for injection may include any isotonic carrier such as, for example, normal saline (about 0.90% w/v of NaCl in water, about 300 mOsm/L NaCl in water, or about 9.0 g NaCl per liter of water), NORMOSOL R electrolyte solution (Abbott, Chicago, IL), PLASMA-LYTE A (Baxter, Deerfield, IL), about 5% dextrose in water, or Ringer's lactate.
  • the pharmaceutically acceptable carrier is supplemented with human serum albumen.
  • the amount or dose (e.g., numbers of cells when the inventive TCR material is one or more cells) of the inventive TCR material administered should be sufficient to effect, e.g., a therapeutic or prophylactic response, in the subject or animal over a reasonable time frame.
  • the dose of the inventive TCR material should be sufficient to bind to a cancer antigen, or detect, treat or prevent cancer in a period of from about 2 hours or longer, e.g., 12 to 24 or more hours, from the time of administration. In certain embodiments, the time period could be even longer.
  • the dose will be determined by the efficacy of the particular inventive TCR material and the condition of the animal (e.g., human), as well as the body weight of the animal (e.g., human) to be treated.
  • an assay which comprises comparing the extent to which target cells are lysed or IFN- ⁇ is secreted by T cells expressing the inventive TCR (or functional variant or functional portion thereof), polypeptide, or protein upon administration of a given dose of such T cells to a mammal among a set of mammals of which is each given a different dose of the T cells, could be used to determine a starting dose to be administered to a mammal.
  • the extent to which target cells are lysed or IFN- ⁇ is secreted upon administration of a certain dose can be assayed by methods known in the art.
  • the dose of the inventive TCR material also will be determined by the existence, nature and extent of any adverse side effects that might accompany the administration of a particular inventive TCR material. Typically, the attending physician will decide the dosage of the inventive TCR material with which to treat each individual patient, taking into consideration a variety of factors, such as age, body weight, general health, diet, sex, inventive TCR material to be administered, route of administration, and the severity of the condition being treated. In an embodiment in which the inventive TCR material is a population of cells, the number of cells administered per infusion may vary, e.g., from about 1 x 10 6 to about 1 x 10 12 cells or more.
  • inventive TCR materials of the invention can be modified in any number of ways, such that the therapeutic or prophylactic efficacy of the inventive TCR materials is increased through the modification.
  • inventive TCR materials can be conjugated either directly or indirectly through a bridge to a targeting moiety.
  • the practice of conjugating compounds, e.g., inventive TCR materials, to targeting moieties is known in the art. See, for instance, Wadwa et al., J Drug Targeting !: 1 1 1 (1995) and U.S. Patent 5,087,616.
  • targeting moiety refers to any molecule or agent that specifically recognizes and binds to a cell-surface receptor, such that the targeting moiety directs the delivery of the inventive TCR materials to a population of cells on which surface the receptor is expressed.
  • Targeting moieties include, but are not limited to, antibodies, or fragments thereof, peptides, hormones, growth factors, cytokines, and any other natural or non-natural ligands, which bind to cell surface receptors (e.g., Epithelial Growth Factor Receptor (EGFR), T cell receptor (TCR), B- cell receptor (BCR), CD28, Platelet-derived Growth Factor Receptor (PDGF), nicotinic acetylcholine receptor (nAChR), etc.).
  • EGFR Epithelial Growth Factor Receptor
  • TCR T cell receptor
  • BCR B- cell receptor
  • CD28 CD28
  • PDGF Platelet-derived Growth Factor Receptor
  • nAChR nicotinic acetylcholine receptor
  • sites on the inventive TCR materials which are not necessary for the function of the inventive TCR materials, are ideal sites for attaching a bridge and/or a targeting moiety, provided that the bridge and/or targeting moiety, once attached to the inventive TCR materials, do(es) not interfere with the function of the inventive TCR materials, i.e., the ability to bind to HPV 16 E6; or to detect, treat, or prevent cancer, HPV 16 infection, or HPV-positive premalignancy.
  • the inventive TCRs (and functional variants thereof) are believed to bind specifically to HPV 16 E6, such that the TCR (or related inventive polypeptide or protein and functional variants thereof), when expressed by a cell, is able to mediate an immune response against a target cell expressing HPV 16 E6.
  • the invention provides a method of treating or preventing a condition in a mammal, comprising
  • inventive methods can provide any amount of any level of treatment or prevention of a condition in a mammal.
  • the treatment or prevention provided by the inventive method can include treatment or prevention of one or more conditions or symptoms of the condition, e.g., cancer, being treated or prevented.
  • treatment or prevention can include promoting the regression of a tumor.
  • prevention can encompass delaying the onset of the condition, or a symptom or condition thereof.
  • a method of detecting the presence of a condition in a mammal comprises (i) contacting a sample comprising one or more cells from the mammal with any of the inventive TCRs (and functional variants thereof), polypeptides, proteins, nucleic acids, recombinant expression vectors, host cells, populations of cells, antibodies, or antigen binding portions thereof, or pharmaceutical compositions described herein, thereby forming a complex, and detecting the complex, wherein detection of the complex is indicative of the presence of the condition in the mammal, wherein the condition is cancer, HPV 16 infection, or HPV-positive premalignancy.
  • the sample of cells can be a sample comprising whole cells, lysates thereof, or a fraction of the whole cell lysates, e.g., a nuclear or cytoplasmic fraction, a whole protein fraction, or a nucleic acid fraction.
  • the contacting can take place in vitro or in vivo with respect to the mammal.
  • the contacting is in vitro.
  • the inventive TCRs and functional variants thereof, polypeptides, proteins, nucleic acids, recombinant expression vectors, host cells, populations of cells, or antibodies, or antigen binding portions thereof, described herein, can be labeled with a detectable label such as, for instance, a radioisotope, a fluorophore (e.g., fluorescein isothiocyanate (FITC), phycoerythrin (PE)), an enzyme (e.g., alkaline phosphatase, horseradish peroxidase), and element particles (e.g., gold particles).
  • a detectable label such as, for instance, a radioisotope, a fluorophore (e.g., fluorescein isothiocyanate (FITC), phycoerythrin (PE)), an enzyme (e.g., alkaline phosphatase, horseradish peroxidase), and element particles (e.g., gold particles).
  • the cells can be cells that are allogeneic or autologous to the mammal.
  • the cells are autologous to the mammal.
  • the cancer can be any cancer, including any of acute lymphocytic cancer, acute myeloid leukemia, alveolar rhabdomyosarcoma, bone cancer, brain cancer, breast cancer, cancer of the anus, anal canal, or anorectum, cancer of the eye, cancer of the intrahepatic bile duct, cancer of the joints, cancer of the neck, gallbladder, or pleura, cancer of the nose, nasal cavity, or middle ear, cancer of the oral cavity, cancer of the vagina, cancer of the vulva, chronic lymphocytic leukemia, chronic myeloid cancer, colon cancer, esophageal cancer, cervical cancer, gastrointestinal carcinoid tumor, glioma, Hodgkin lymphoma, hypopharynx cancer, kidney cancer, larynx cancer, liver cancer, lung cancer, malignant mesothelioma, melanoma, multiple myeloma, nasopharynx cancer
  • a preferred cancer is cancer is cancer of the uterine cervix, oropharynx, anus, anal canal, anorectum, vagina, vulva, or penis.
  • a particularly preferred cancer is HPV 16-positive cancer. While the cancers most commonly associated with HPV 16 infection include cancer of the uterine cervix, oropharynx, anus, anal canal, anorectum, vagina, vulva, and penis, the inventive methods may be used to treat any HPV 16-positive cancer, including those that occur at other anatomical areas.
  • the mammal referred to in the inventive methods can be any mammal.
  • the term "mammal” refers to any mammal, including, but not limited to, mammals of the order Rodentia, such as mice and hamsters, and mammals of the order Logomorpha, such as rabbits. It is preferred that the mammals are from the order Carnivora, including Felines (cats) and Canines (dogs). It is more preferred that the mammals are from the order
  • Artiodactyla including Bovines (cows) and Swines (pigs) or of the order Perssodactyla, including Equines (horses). It is most preferred that the mammals are of the order Primates, Ceboids, or Simoids (monkeys) or of the order Anthropoids (humans and apes). An especially preferred mammal is the human.
  • a sample of a metastatic HPV 16 E6-positive anal cancer tumor (tumor 3809) was obtained from a patient.
  • the tumor sample was analyzed for expression of HPV 16 E6, HPV 16 E7, HPV 18 E6, and HPV 18 E7 relative to glyceraldehyde 3-phosphate dehydrogenase (GAPDH) by reverse transcriptase (RT) polymerase chain reaction (PCR).
  • Relative expression of HPV 16 E6, HPV 16 E7, HPV 18 E6, and HPV 18 E7 was compared to that of CaSki cells, HeLa cells, and 624 cells (melanoma cell line). The results are shown in Figure 1.
  • the tumor 3809 sample was positive for HPV 16 E6 expression.
  • TIL tumor infiltrating lymphocytes
  • the TIL were co-cultured in a 96-well plate with autologous immature dendritic cells (DCs) which had been pulsed with HPV 16 E6 alone, HPV 16 E6 in combination with anti-class I antibody, HPV 16 E7 alone, HPV 16 E7 in combination with anti-class I antibody, gpl OO, or OKT3.
  • DCs autologous immature dendritic cells
  • IFN- ⁇ Interferon- gamma
  • the expanded numbers of 3809 4-lBB-selected cells were co-cultured with 293- A2 cells (HEK-293 cells with stable expression of HLA-A2) transfected with green fluorescent protein (GFP), 293 -A2 cells transfected with E6, 3809 lymphoblastoid cell line (LCL) (B cells that have been transformed using Epstein-Barr virus) cultured without peptide, 3809 LCL co-cultured with an HPV 16 E6 peptide pool, or OKT3.
  • the peptide pool included 15-mer peptides with 1 1-amino-acid overlaps that covered the complete sequence of HPV 16 E6. IFN- ⁇ was measured. The results are shown in Figure 3.
  • the expanded numbers of TIL were reactive against 293 -A2 cells transfected with E6 but not 293-A2 cells transfected with GFP.
  • the 3809 LCL cells co-cultured with the E6 peptide pool demonstrated reactivity while the 3809 LCL cells co-cultured with no peptides did not.
  • Flow cytometry studies showed that the expanded numbers of cells bound to HLA-A2/E6 2 9-38 tetramer.
  • RACE RACE
  • a nucleotide sequence comprising cDNA (SEQ ID NO: 21 ) encoding an alpha chain comprising the amino acid sequence of SEQ ID NO: 1 1 was obtained from
  • a nucleotide sequence comprising cDNA (SEQ ID NO: 22) encoding a beta chain comprising the amino acid sequence of SEQ ID NO: 12 was obtained from TRBV7-6*01/ TRBV2-3*01/ TRBD1 *01.
  • This example demonstrates a method of making a chimeric anti-HP V 16 TCR comprising a human variable region and a mouse constant region.
  • a nucleotide sequence encoding a chimeric TCR including a mouse constant region and a human variable region was prepared as follows.
  • the nucleotide sequences encoding the original (human) constant regions of the alpha and beta chains of the TCR obtained in Example 1 were excised and replaced with nucleotide sequences encoding a murine constant region of the alpha and beta chains, respectively.
  • the resulting nucleotide sequences encoding the chimeric alpha and beta chains were cloned into a single nucleotide sequence with a nucleotide sequence encoding a picornavirus 2A peptide positioned between the alpha and beta chains.
  • the combined nucleotide sequence was codon-optimized (opt) for expression in human tissues to provide a vector insert (SEQ ID NO: 29).
  • the vector insert was cloned into an MSGVl expression vector resulting in the nucleotide sequence of SEQ ID NO: 30 (E6 TCR).
  • the TCR encoded by the vector comprised an alpha chain comprising an amino acid sequence comprising SEQ ID NO: 17 and a beta chain comprising an amino acid sequence comprising SEQ ID NO: 18.
  • PBL peripheral blood lymphocytes
  • Peripheral blood lymphocytes were transduced with the expression vector of Example 2 and were co-cultured with target 293-A2 cells pulsed with HPV 16 E6 2 9-38 peptide, 293-A2 cells pulsed with HPV 16 E7n-i peptide, 293-A2 cells transduced with a plasmid encoding HPV 16 E6, 293 -A2 cells transduced with a plasmid encoding GFP, 293 cells transduced with a plasmid encoding HPV 16 E6, 624 cells transduced with a plasmid encoding HPV 16 E6, 624 cells transduced with a plasmid encoding HPV 16 E7, SCC152 cells, SCC90 cells, CaSki cells, HPV- 18 cervical cancer cells, melanoma control cells, cholangio control cells, 624 cells, or SiHa cells.
  • IFN- ⁇ was measured. The results are shown in Figure 4A.
  • PBMC transduced with a recombinant expression vector encoding the amino acid sequences of SEQ ID NOs: 17 and 18 specifically recognizes HPV 16-positive tumor cell lines and other HLA-A2 + HPV16 + targets in an HLA-A2- restricted manner.
  • PBL transduced with the expression vector of Example 2 were co-cultured with target 293-A2 cells transduced with a plasmid encoding E6, 293 cells transduced with a plasmid encoding E6, SCC90 cells, CaSki cells, or 624 cells (melanoma cell line) with no antibody, anti-MHC Class I antibody, or anti-MHC Class II antibody.
  • DMF5 T cells transduced to express a MHC class I-restricted TCR against MART-1
  • DMF5 T cells transduced to express a MHC class I-restricted TCR against MART-1
  • a melanoma cell line 614 that is recognized by DMF5 with no antibody, anti-MHC Class I antibody, or anti-MHC Class II antibody.
  • T cells transduced to express a MHC class Il-restricted TCR against HPV 16 E7 were cultured with PBMC pulsed with the E7 peptide pool "E7 peptides" with no antibody, anti-MHC Class I antibody, or anti-MHC Class II antibody. IFN- ⁇ was measured. The results are shown in Figure 4B. As shown in Figure 4B, anti-MHC Class I antibody blocked the reactivity of the transduced cells against HLA- A2 + HPV16 + targets, while anti-Class II antibody did not block reactivity.
  • PBL transduced with the recombinant expression vector of Example 2 was sorted into CD8-positive cells and CD8-negative cells by FACS. Binding to HLA-A2-E6 2 9-38 tetramer was measured by flow cytometry. CD8-positive and CD8-negative cells both bound to HLA-A2-E6 2 9-38 tetramer.
  • This example demonstrates that CD4 and CD8-positive cells transduced with a recombinant expression vector encoding the amino acid sequences of SEQ ID NOs: 17 and 18 specifically recognize HPV-16 positive tumor cell lines.
  • CD8-positive or CD4-positive PBL were not transduced (untransduced) or transduced with the expression vector of Example 2 and were co-cultured with target 293-A2 cells pulsed with HPV 16 E6 2 9_ 3 s peptide, 293 -A2 cells pulsed with HPV 16 E7n-i 9 peptide, 293-A2 cells transduced with a plasmid encoding HPV 16 E6, 293-A2 cells transduced with a plasmid encoding GFP, 293 -A2 cells, retro virus-transduced 624 cells stably expressing HPV 16 E7 (624-E7), retrovirus-transduced 624 cells stably expressing HPV 16 E6 (624-E6), SCC 152 cells, SCC90 cells, CaSki cells, HPV- 18 cervical cancer cells, melanoma control cells, 624 cells, or SiHa cells.
  • IFN- ⁇ was measured. The results are shown in Figure 5.
  • CD8 positive and CD4 positive PBMC transduced with a recombinant expression vector encoding the amino acid sequences of SEQ ID NOs: 17 and 18 both specifically recognize HPV 16-positive tumor cell lines and other HLA-A2 + HPV16 + targets in an HLA-A2-restricted manner.
  • CD8-positive or CD4-positive PBL were not transduced (untransduced) or transduced with the expression vector of Example 2 and were co-cultured with target T2 cells pulsed with varying concentrations of HPV 16 E6 29 . 3 8 peptide. IFN- ⁇ was measured. The results are shown in Figures 6A and 6B. As shown in Figures 6A and 6B, CD4 positive and CD 8 positive cells transduced with a recombinant expression vector encoding the amino acid sequences of SEQ ID NOs: 17 and 18 demonstrated avid recognition of HPV 16 ⁇ 6 2 9-38- pulsed T2 cells.
  • This example demonstrates a method of treating HPV 16 + cancer in a human patient, comprising administering to the patient autologous T cells transduced to express an anti-HPV 16 E6 2 9 -38 TCR comprising the amino acid sequences of SEQ ID NOs: 17 and 18.
  • Patients will have recurrent/refractory or metastatic HPV-16 + cancer.
  • a sample of cancerous tissue will be tested for HPV 16 genotype by in situ hybridization (ISH) or PCR.
  • Patients will also be tested for HLA-A2 expression.
  • the patients will have had a prior first line treatment for recurrent/refractory or metastatic disease, or the patient will have declined standard therapy.
  • CM complete medium
  • IL-2 interleukin
  • Objective tumor responses will be evaluated according to RECIST (Response Evaluation Criteria In Solid Tumors) 1.0. If at least three out of 18 patients respond to treatment at four months or more after treatment, the cohort will be expanded to 35 patients. Toxicity will also be evaluated. Immunological studies (including, for example, expansion, persistence, phenotype, and function of the infused cells) will also be studied.

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