PT - JOURNAL ARTICLE AU - TURNER, MICHAEL A. AU - HOLLANDSWORTH, HANNAH M. AU - NISHINO, HIROTO AU - AMIRFAKHRI, SIAMAK AU - LWIN, THINZAR M. AU - LOWY, ANDREW M. AU - KAUR, SUKHWINDER AU - NATARAJAN, GOPALAKRISHNAN AU - MALLYA, KAVITA AU - HOFFMAN, ROBERT M. AU - BATRA, SURINDER K. AU - BOUVET, MICHAEL TI - Fluorescent Anti-MUC5AC Brightly Targets Pancreatic Cancer in a Patient-derived Orthotopic Xenograft AID - 10.21873/invivo.12676 DP - 2022 Jan 01 TA - In Vivo PG - 57--62 VI - 36 IP - 1 4099 - http://iv.iiarjournals.org/content/36/1/57.short 4100 - http://iv.iiarjournals.org/content/36/1/57.full SO - In Vivo2022 Jan 01; 36 AB - Background: Overexpression of mucin-5AC (MUC5AC) makes it a targetable biomarker in pancreatic cancer. The present study evaluated tumor targeting with a MUC5AC antibody conjugated to a near-infrared dye in a patient-derived orthotopic xenograft (PDOX) mouse model. Materials and Methods: MUC5AC monoclonal antibody was conjugated to the near-infrared dye IRDye800CW to synthesize MUC5AC-IR800. PDOX models were established by implanting a high-MUC5AC-expressing patient-derived pancreatic tumor on the pancreas of nude mice. After 4 weeks of PDOX tumor growth, mice were imaged after receiving MUC5AC-IR800 (75 μg) intravenously. Results: In the PDOX models, MUC5AC-IR800 selectively and brightly targeted the pancreatic tumor (tumor to background ratio: 2.46±0.465). Conclusion: MUC5AC-IR800 provides distinct visualization of pancreatic tumors. MUC5AC-IR800 may be used clinically in the future to improve pancreatic cancer resection. This novel fluorescent probe is also promising for targeting of pre-malignant pancreatic lesions with subsequent resection under fluorescence guidance.