Abstract: The present invention generally relates to systems and methods for treating cancer using immunogenic cell death, e.g., lysosome-induced immunogenic cell death. This includes at least three aspects, which may be used separately or together. A first aspect involves the preparation of a tumor for treatment, for example, by withdrawal and suppression of antioxidants, supply of n-3 through n-6 and other unsaturated fatty acids, and/or treatment of the subject with statins. A second aspect involves restoration of p53 functionality though genetic manipulation, including techniques involving CRISPR. A third aspect involves constructing an antibody-enzyme complex where the antibody recognizes the tumor and the enzyme is an oxidase. The complex may be administered to a subject. The subject may also be provided with a substrate to the enzyme. These and/or other aspects, may be used separately or together, and may be used to treat and/or cure cancer. In some cases, the lysosome may be targeted in inducing cell death, e.