Sustainable Polymer Innovation for Safer Cancer Treatment

Prof Rueben Pfukwa from Stellenbosch University and Professor Seb Perrier from the University of Warwick are working together on a new approach to one of the biggest challenges in cancer treatment. Many widely used cancer drugs contain platinum, a metal that helps kill cancer cells by damaging their DNA. These medicines have been life saving for many patients, but they also harm healthy cells and can cause serious side effects. Over time, cancers can even become resistant to them.

To address this, scientists around the world have been exploring ways to package platinum drugs inside tiny particles made from specialised polymers. These nanoparticles protect the drug as it travels through the body and help it accumulate where it is needed most, which is usually inside a tumour. This can improve how well the drug works and reduce harmful effects on healthy tissue.

However, many of the current methods for making these polymer carriers are complicated, time consuming and rely on harsh chemicals. This makes them difficult to scale up and limits their environmental sustainability. The joint project between Prof Pfukwa and Professor Perrier aims to overcome these barriers by creating new polymer platforms that are easier to make, more sustainable and adaptable enough to support personalised cancer treatment in the future.

The teams at Stellenbosch and Warwick have already taken important steps toward this goal. Prof Pfukwa’s laboratory has developed a promising new type of block copolymer that can be produced in a single step and that can bind to platinum drugs in a very controlled way. These polymer drug combinations naturally assemble into nanoparticles in water and have shown encouraging activity against cancer cells in laboratory tests. While effective, the original method required very strict conditions and organic solvents.

Building on this success, the collaborators are now developing simpler methods that use far gentler conditions and less energy. This aligns with the principles of green chemistry and moves the field closer to pro-ducing nanomedicine systems that are both high performing and environmentally responsible. Early work suggests that the new method can reliably produce well defined polymers suitable for drug delivery without relying on harsh chemicals.

By combining expertise in polymer chemistry, nanomedicine and materials design, Prof Pfukwa and Professor Perrier are establishing a shared research framework that will guide future development of polymer-based treatments. Their long-term vision is to create a predictive platform where data guides the design of new materials and helps link polymer structures to biological responses and clinical outcomes. This could lead to safer, more precise cancer treatments and set a model for responsible innovation across the pharmaceutical field.

The collaboration between Stellenbosch and Warwick demonstrates how international partnerships can accelerate progress on complex healthcare challenges. It brings together complementary strengths, supports training and knowledge exchange and lays the groundwork for a much larger joint research programme. Most importantly, it offers hope for cancer therapies that are not only more effective but also kinder to patients and the environment.