Effect of 177Lu-iPSMA on viability and DNA damage of human glioma cells subjected to hypoxia-mimetic conditions

The therapeutic potential of Lu-177-iPSMA on hypoxic cancer cells has not been yet demonstrated. The aim of this work was to evaluate the radiation dose effect of Lu-177-iPSMA on viability and DNA damage in U87MG human glioma cells subjected to hypoxia-mimetic conditions. U87MG cells treated with Lu-177-iPSMA were incubated with CoCl2 in order to induce hypoxia-mimetic conditions. The cytotoxic and genotoxic effect was evaluated with an in vitro viability test and a neutral comet assay. Lu-177-iPSMA decreased the cell viability and induced DNA double strand breaks in U87MG human glioma cells under hypoxia-mimetic conditions. Lu-177-iPSMA produced the maximum effect at 48 h, suggesting that this radiopharmaceutical could be used as a strategy for the treatment of human glioma hypoxic cells.