Guangdong Newopp Biopharmaceuticals Co. Ltd. has identified macrocyclic derivatives acting as ubiquitin carboxyl-terminal hydrolase 1 (USP1) inhibitors reported to be useful for the treatment of cancer.
Prostaglandin E2 (PGE2) regulates inflammation and the tumor microenvironment, thought to happen through engagement with the E-type prostanoid EP2 and EP4 receptors, exerting immunosuppression in the tumor microenvironment. The simultaneous blockade of EP2 and EP4 – not blocking either alone – is needed to overcome this immunosuppressor effect.
