Hi Im A 15 Year Old Boy That Lives In

hi im a 15 year old boy that lives in canada and i love biology so cancer is a thing that im intrested in i was wondering if u could cure cancer by creating a smart cell we all know that cancer cell divide in a fast a rate what if we can create a cell which has the ability to defend like the white blood cell and the rate of cancer to divide but filled with nutirents that could defend the body against cancer and overnumber it imagine ur body as a war if you can outnumber ur enemy you win anyways its just a theroy iv been working on