Pyocyanin is widely used in biomedical research due to its role as a virulence factor in Pseudomonas aeruginosa infections. It is studied for its antimicrobial properties and its ability to generate reactive oxygen species, making it a focus in understanding bacterial pathogenesis and host immune responses. Additionally, pyocyanin has applications in bioelectrochemical systems, where it acts as an electron shuttle in microbial fuel cells, enhancing energy generation efficiency. Its redox-active nature also makes it a candidate for developing biosensors to detect bacterial infections or monitor environmental pollutants. Furthermore, pyocyanin is explored in cancer research for its potential to induce apoptosis in cancer cells, offering insights into novel therapeutic strategies.