 sepsis is a life-threatening condition caused by an overwhelming immune response to an infection. It can lead to organ failure and death if not treated quickly. A new type of antioxidant, called a nanosymbol, has been developed to treat sepsis. This nanomedicine, called CUS azine, is designed to mimic the structure and function of naturally occurring copper enzymes found in the body. When injected into animal suffering from sepsis, it rapidly eliminates the harmful molecules that cause the disease. In addition, CUS azine also reduces the inflammation associated with sepsis, helping to protect organs and reduce the risk of organ failure. This article was authored by Ji Yang, Ruofei Zhong, Han Qingjiao, and others.