[Genetic information from tumor-infiltrating B lymphocytes as a driver tool ("GPS") for anti-tumor T cell CARs].

: The rapidly growing field of gene therapy techniques to modify T cells with chimeric antigen receptors (CARs) for cancer care solutions, reached considerable achievements. However, there is an urgent need of reliable, well tolerable tumor-associated antigen specific antibodies. Tumor-infiltrating B (TIL-B) cell originated single chain Fv (scFv) gene regions could be selected with tumor specificity. DNA sequences of these antibody variable regions were subjects to get engineered into new CAR constructs. Our novel strategy harnesses tumor-infiltrating B cells' unique capacity to reveal highly tumor-associated disialylated glycosphingolipids (GD3 gangliosides). We used these human antibody fragments for generating GD3 ganglioside specific CAR gene constructs for potential usage in solid tumors.