11 results about "PRAME" patented technology

The invention discloses an antigen binding fragment of an anti-human PRAME protein, a monoclonal antibody as well as preparation and application of the monoclonal antibody. CDR1 of a heavy chain variable region of the antigen binding fragment of the anti-human PRAME protein comprises an amino acid sequence as shown in SEQ ID NO.1, CDR2 comprises an amino acid sequence as shown in SEQ ID NO.2, and CDR3 comprises an amino acid sequence as shown in SEQ ID NO.3; cDR1 of a light chain variable region of the antigen binding fragment of the anti-human PRAME protein comprises an amino acid sequence as shown in SEQ ID NO.4, CDR2 of the light chain variable region of the antigen binding fragment of the anti-human PRAME protein comprises an amino acid sequence as shown in SEQ ID NO.5, and CDR3 of the light chain variable region of the antigen binding fragment of the anti-human PRAME protein comprises an amino acid sequence as shown in SEQ ID NO.6. The monoclonal antibody provided by the invention has high specificity and low cross reactivity, can efficiently and specifically recognize natural and denatured PRAME proteins, and is suitable for immunological detection, especially immunohistochemical detection.

The present invention relates to combinations of host cells expression antigen binding proteins that specifically bind to a tumor expressed Preferentially Expressed Antigen of Melanoma (PRAME) antigenic peptide in a complex with MHC, and mRNAs encoding PRAME antigenic peptides. The invention further relates to combined TCR-T / mRNA therapy employing said mRNAs and host cells. In particular, a combined TCR-T / mRNA therapy is provided for use in cancer treatment.

Provided herein are activated adoptive T-cell compositions targeting plasma cell dyscrasias such as multiple myeloma and methods of treating plasma cell dyscrasias such as multiple myeloma using such compositions. The T-cell compositions of the present disclosure are activated against a select group of antigens associated with multiple myeloma (MMAAs) and, in certain embodiments, in combination with more widely expressed tumor associated antigens (TAAs). In particular, the T-cell compositions of the present disclosure are directed to the MMAAs selected from B-cell maturation antigen (BCMA), X box Protein 1 (XBP1), CS1, and Syndecan-1 (CD138), or a combination thereof. In certain embodiments, the T-cell composition includes T-cells activated to a TAA selected from preferentially expressed antigen of melanoma (PRAME), Survivin, Wilms' Tumor 1 protein (WT1), and melanoma antigen 3 (MAGE-A3), or a combination thereof.

To provide PRAME-binding molecules having moderate affinity for HLA-A24PRAMEp301-309pMHC complexes and high recognition specificity.SOLUTION: PRAME binding molecules comprising a heavy chain CDR1, a heavy chain CDR2, and a heavy chain variable region comprising the heavy chain CDR3, each comprising a specific amino acid sequence, and / or a light chain CDR1 comprising a specific amino acid sequence, a light chain CDR2 comprising the amino acid sequence GKN, and a light chain variable region comprising the light chain CDR3, each comprising a specific amino acid sequence.SELECTED DRAWING: None

The present invention provides isolated T cell receptors (TCRs) that specifically bind to an HLA-displayed cancer testis antigen preferentially expressed antigen in melanoma (FRAME) peptide, as well as therapeutic and diagnostic methods of using those isolated TCRs.

Provided are recombinant polypeptides, pharmaceutical compositions and uses thereof, and methods of preventing or treating cancer. The recombinant polypeptide comprises a first subunit and a second subunit, the first subunit comprises all or fragments of the amino acid sequence of programmed death ligand 1 (PD-L1), and the second subunit comprises all or fragments of the amino acid sequence of a melanoma preferential expression antigen (PRAME). The dual antigen cancer vaccine co-targeting PD-L1 and PRAME effectively prevents, ameliorates or treats cancer and / or inhibits tumor growth in the prophylactic and therapeutic aspects.

The present invention concerns antigen binding proteins directed against PRAME protein-derived antigens. The invention in particular provides antigen binding proteins which are specific for the tumor expressed antigen PRAME, wherein the tumor antigen comprises or consists of SEQ ID NO: 50 and is in a complex with a major histocompatibility complex (MHC) protein. The antigen binding proteins of the invention contain, in particular, the complementary determining regions (CDRs) of novel engineered T cell receptors (TCRs) that specifically bind to said PRAME peptide. The antigen binding proteins of the invention are for use in the diagnosis, treatment and prevention of PRAME expressing cancerous diseases. Further provided are nucleic acids encoding the antigen binding proteins of the invention, vectors comprising said nucleic acids, recombinant cells expressing the antigen binding proteins and pharmaceutical compositions comprising the antigen binding proteins of the invention.

Present disclosure provides engineered polynucleotides encoding concatemeric FRAME epitope polypeptides, including concatemeric FRAME epitope polypeptides capable of promoting an immune response to cancer cells expressing FRAME. The disclosure also provides pharmaceutical compositions and kits comprising the same, and methods of use and treatment of PRAME-positive cancers.

Aspects of the application provide composition (e.g., anti-PRAME / HLA-A2 antibodies, and / or anti-PRAME / A2xT cell bispecific antibodies) and methods of using the same in treating cancer (e.g., cancer expressing PRAME).

The present invention relates to a T cell receptor (TCR) capable of binding to a PRAME peptide having the amino acid sequence SLLQHLIGL (SEQ ID NO: 1) or a portion thereof, or its HLA-A2 bound form. Also encompassed in the present invention is a nucleic acid encoding a TCR, a vector comprising the nucleic acid, and a host cell comprising the TCR, the nucleic acid sequence, or the vector. Comprised is further, a method for obtaining a TCR described herein, a pharmaceutical or diagnostic composition, and a method of detecting the presence of a cancer in a subject in vitro. Furthermore, the present invention relates to the use of a TCR, a nucleic acid and / or a vector for generating modified lymphocytes.