Sucrose‐Powered Liposome Nanosensors for Urinary Glucometer‐Based Monitoring of Cancer

Abstract Timely detection of early‐stage cancer holds immense potential in enhancing prognostic outcomes. There is an increasing desire for versatile tools to enable simple, sensitive, and cost‐effective cancer detection. By exploiting the extraintestinal metabolic inertness and efficiency renal clearance of sucrose, we designed a liposome nanosensor using sucrose as a messenger to convert tumor‐specific esterase activity into glucose meter readout, enabling economical and sensitive urinalysis for cancer detection in point‐of‐care testing (POCT). Our results demonstrate that the nanosensors exhibited significant signal differences between tumor‐bearing and healthy mice in both orthotopic and metastatic tumor models. Additionally, efficient elimination of the nanosensors through the hepatobiliary pathway was observed with no significant toxicity. Such a non‐invasive diagnostic modality significantly assists in personalized pharmacological treatment and follow‐up efficacy assessment. We envision that this modular liposome nanosensor platform might be applied for economically detecting diverse diseases via a simple urinary test.