Antimicrobial Peptides Emerge as Potent Anticancer Agents, Bridging Innate Immunity to Cancer Therapy

Globally, cancer remains a severe public health crisis, with projected new cases exceeding 35 million by 2050. Traditional cancer treatments, including surgical interventions, chemotherapy, and radiation therapy, often lack specificity, leading to significant toxicity to healthy tissues and impaired patient quality of life. This necessitates the development of more targeted and effective therapeutic strategies. Antimicrobial peptides (AMPs), vital components of the innate immune system, are small, gene-encoded molecules typically fewer than 100 amino acids that offer broad-spectrum defense against pathogens. Their inherent ability to target and disrupt microbial membranes has led to their investigation as novel agents against malignant cells.

This review article systematically analyzes the current scientific literature on antimicrobial peptides (AMPs), exploring their transition from innate immune effectors to promising anticancer agents. The authors synthesized findings from numerous studies to detail the diverse mechanisms of action by which AMPs exert their cytotoxic effects on cancer cells. The review encompasses the efficacy of various AMPs against different cancer cell lines and discusses strategies for enhancing their therapeutic index and specificity. It aims to consolidate the understanding of AMPs' potential in overcoming the limitations of conventional cancer therapies.

The review synthesizes evidence highlighting antimicrobial peptides (AMPs) as potent anticancer agents, leveraging their inherent properties from the innate immune system. It details how these small, gene-encoded molecules, typically fewer than 100 amino acids, exhibit broad-spectrum activity not only against microbes but also against various cancer cell types. The authors discuss the diverse mechanisms by which AMPs target and eliminate malignant cells, often involving membrane disruption, induction of apoptosis, and modulation of the tumor microenvironment.

The synthesis of current literature underscores AMPs' potential to overcome limitations of conventional cancer therapies, offering a more specific and less toxic approach. The review emphasizes their role in bypassing drug resistance and stimulating host immune responses, positioning them as a promising class for novel therapeutic strategies.