T cell receptors that specifically recognize hAFP.sub.158 and methods of their use are provided.

An industrial preparation of natural killer cells (NKs) is produced by: using umbilical cord blood and peripheral blood from legitimate sources as raw materials, obtaining stem cells by a method for extracting and separating karyocytes, or using FICOLL? or PERCOLL? density gradient media centrifugation to isolate and screen out karyocytes; diluting the above-mentioned karyocytes with cell culture medium, adding interferon, interleukin, CD3 antibody, and human albumin, loading them together into a bioreactor for perfusion culture, and then performing multiplication culture; the passage number of natural killer cells from multiplication culture is no less than 8, and the culture time is no less than 4 weeks; the markers of the natural killer cells obtained after the multiplication culture are CD3.sup.?\CD56.sup.+, CD16.sup.+, CD57.sup.+, and CD8.sup.+, wherein CD16.sup.+/CD56.sup.+?15%, CD3.sup.?/CD56.sup.+?50%, and CD8.sup.+/CD57.sup.+?8%; then preparing an injection with a certain concentration using the cell suspension obtained by above-mentioned method.

The present application provides antibody-TCR chimeric constructs comprising an antibody moiety that specifically binds to a target antigen fused to a TCRM capable of recruiting at least one TCR-associated signaling module. Also provided are methods of making and using these constructs.

The present application provides immune cells (such as T cells) comprising a chimeric antibody-T cell receptor (TCR) construct (caTCR) and a chimeric signaling receptor (CSR) construct. The caTCR comprises an antigen-binding module that specifically binds to a target antigen and a T cell receptor module (TCRM) capable of recruiting at least one TCR-associated signaling molecule, and the CSR comprises a ligand-binding domain that specifically binds to a target ligand and a co-stimulatory signaling domain capable of providing a stimulatory signal to the immune cell. Also provided are methods of making and using these cells.

The present application provides constructs comprising an antibody moiety that specifically binds to a complex comprising an AFP peptide and an MHC class I protein. Also provided are methods of making and using these constructs.

The present application provides constructs comprising an antibody moiety that specifically binds to a complex comprising an AFP peptide and an MHC class I protein. Also provided are methods of making and using these constructs.

A T cell receptor (TCR) capable of specifically binding to a short peptide FMNKFIYEI derived from an AFP antigen. The antigen short peptide FMNKFIYEI can form a complex with HLA A0201 and be presented together with same to the cell surface. A nucleic acid molecule encoding the TCR, a vector comprising the nucleic acid molecule, and a cell that transduces the TCR.

This invention relates to modified T cells that inducibly express a bioactive molecule, such as IL-7, and constitutively expresses an antigen receptor, such as a T cell receptor or chimeric antigen receptor that binds to a tumour antigen. The modified T cells may comprise a nucleic acid construct that comprises a first nucleotide sequence encoding the bioactive molecule, a second nucleotide sequence encoding the antigen receptor; an inducible promoter operably linked to the first nucleotide sequence and a constitutive promoter operably linked to the second nucleotide. Nucleic acid constructs and vectors are provided, as well as T cells comprising such constructs and vectors and therapeutic methods and uses thereof.

The present application provides antibody-TCR chimeric constructs comprising an antibody moiety that specifically binds to a target antigen fused to a TCRM capable of recruiting at least one TCR-associated signaling module. Also provided are methods of making and using these constructs.

The present application provides constructs comprising an antibody moiety that specifically binds to a complex comprising an AFP peptide and an MHC class I protein. Also provided are methods of making and using these constructs.