Is there any relationship between chemotherapeutic agents and antimicrobial agents? Are chemotherapeutic agents in any way related to antimicrobials?

Yes. Chemotherapy agents act by killing cells that divide rapidly (cancer is the uncontrolled growth of cells). Certain chemicals such as antibiotics kill micro-organisms (also known as antimicrobials). In general antibiotics kill bacteria and antimicrobials kill bacteria, fungi, and protozoa. There are cytotoxic antibiotics that are used in treating cancer such as actinomycin, doxorubicin, bleomycin.