Abstract: A method of generating a population of genetically modified veto cells is disclosed. The method comprising: (a) providing a population of cells comprising T cells, the T cells comprising at least 40% memory CD8+ T cells; (b) culturing the population of cells comprising T cells with an antigen or antigens under conditions which allow enrichment of tolerance-inducing antigen-specific cells having a central memory T-lymphocyte (Tcm) phenotype, the cells being depleted of graft versus host (GVH) reactivity; and (c) transducing the cells with a polynucleotide encoding a heterologous cell surface receptor comprising a T cell receptor signaling module, thereby generating the population of genetically modified veto cells.

Abstract: The present invention discloses a fusion protein comprising a vesicular stomatitis virus envelope glycoprotein (VSVG) extracellular domain or a fragment or an analog thereof linked to a polypeptide comprising an antigen binding domain specific to cluster of differentiation 3 (CD3). The application also discloses pseudotyped viruses comprising the fusion protein and pseudotyped viruses encoding for a chimeric antigen receptor (CAR) or T-cell receptor pseudotyped in which the receptor is expressed under a CD3 promoter. Pseudotyped viruses combining these properties are encompassed as well. The application further discloses use of these pseudotyped viruses and method of producing these pseudotyped viruses.

Abstract: The present invention provides extracellular vesicles (EVs) derived from T-cells expressing chimeric antigen receptors (CAR) specifically activated with an antigen to which the CAR bind specifically, pharmaceutical compositions comprising these vesicles as well as their use in treating cancer. In particular the present invention exemplifies EVs derived from activated T-cells expressing CAR that bind specifically to HER2 cancer antigen, pharmaceutical composition comprising these EVs and their use in treating a cancer overexpressing HER2, such as ovarian cancer and breast cancer.