TP53 and breast cancer: Moreover, we have shown that this system effectively delivers a cytotoxic form of a bacterial anti-tumor Neisserial azurin like protein, Laz, which significantly induced apoptosis in glioblastoma LN-229(WT p53) compared to the U-373 (mutated p53) and breast cancer cells MCF7(WT p53), confirming that the induction of apoptosis is p53-mediated.