Antimetabolites: established cancer therapy

Area of Science:

• Oncology
• Molecular Biology
• Cell Biology

Background:

• Cell death is broadly classified into programmed (apoptosis) and passive (necrosis).
• DNA-damaging agents can induce senescence arrest, accelerated senescence, and differentiation.
• Apoptosis can be a primary or secondary event in chemotherapy, influenced by gene regulation and cellular damage.

Purpose of the Study:

• To review current knowledge on cell death processes in cancer cells induced by chemotherapeutic agents.
• To focus on antimetabolites, including analogs of 5-fluorouracil, cytidine, purines, hydroxyurea, and folate antagonists.

Main Methods:

• Literature review of experimental and clinical data.
• Analysis of cell death pathways in response to specific chemotherapeutic agents.

Main Results:

• Apoptosis plays a role in chemotherapy, but other cell death mechanisms like mitotic catastrophe may be more significant, especially with radiation therapy.
• Information on non-apoptotic cell death pathways induced by chemotherapeutic agents is less definitive compared to apoptosis.
• The type of cell death is dependent on the agent, dose, DNA damage type, and cellular phenotype.

Conclusions:

• Understanding diverse cell death mechanisms is crucial for cancer therapy.
• Further research is needed to fully elucidate non-apoptotic cell death pathways induced by chemotherapeutic agents.
• This review consolidates current understanding of antimetabolite-induced cell death in cancer.