Antarctic sea squirt shows promise in targeting skin cancer cells, US study finds
A team of researchers in the United States has identified a marine creature living beneath Antarctica's frozen waters that may contribute to future treatments for skin cancer. The study, conducted by scientists from the University of South Florida (USF), the Desert Research Institute, and the Scripps Institution of Oceanography, focused on an Antarctic sea squirt species harbouring bacteria that produce a compound capable of selectively killing melanoma cells.
Melanoma, the most dangerous form of skin cancer, arises from pigment-producing cells called melanocytes. Current treatments, such as chemotherapy and immunotherapy, often have significant side effects because they can damage healthy cells alongside cancerous ones. The discovery of a compound that targets melanoma cells while sparing normal human cells represents a step towards more precise therapies.
The researchers collected samples of the sea squirt from the icy waters near Antarctica. Upon analysis, they found that bacteria living within the creature synthesise a toxic chemical that effectively destroys melanoma cells in laboratory tests. The compound appears to interfere with specific cellular pathways unique to the cancer cells, leaving healthy cells unharmed.
Dr. Bill Baker, a professor of chemistry at USF and co-author of the study, stated that the findings offer a promising avenue for drug development. However, he cautioned that the research is still in its early stages, and animal testing and clinical trials would be necessary before any potential treatment could reach patients.
This study adds to a growing body of research exploring marine organisms as sources of novel pharmaceuticals. The extreme environments of Antarctica often drive organisms to evolve unique chemical defences, which may have medical applications. The team plans to further investigate the compound's mechanism and explore ways to synthesise it in the laboratory.
The research was published in the journal Marine Drugs and was funded by the National Science Foundation. It highlights the importance of preserving biodiversity in polar regions, as these ecosystems may hold keys to future medical breakthroughs.
