Ruhr-Universitaet-Bochum Mar 26 2026 A copper-based agent complex kills cancer cells in a novel way. It receives its activation signal through light. It could help where existing chemotherapy treatments reach their limits.   Cuproptosis was discovered in 2022. It was a previously unknown type of cell death caused by an excess of copper. The research group led by Professor Johannes Karges at Ruhr University Bochum, Germany, used this mechanism to develop a new, copper-based agent complex that