RAGE-specific single chain Fv for PET imaging of pancreatic cancer

PLoS One. 2018 Mar 12;13(3):e0192821. doi: 10.1371/journal.pone.0192821. eCollection 2018.

Abstract

Noninvasive detection of both early pancreatic neoplasia and metastases could enhance strategies to improve patient survival in this disease that is notorious for an extremely poor prognosis. There are almost no identifiable targets for non-invasive diagnosis by positron emission tomography (PET) for patients with pancreatic ductal adenocarcinoma (PDAC). Over-expression of the receptor for advanced glycation end products (RAGE) is found on the cell surface of both pre-neoplastic lesions and invasive PDAC. Here, a RAGE-specific single chain (scFv) was developed, specific for PET imaging in syngeneic mouse models of PDAC. An anti-RAGE scFv conjugated with a sulfo-Cy5 fluorescence molecule showed high affinity and selectivity for RAGE expressing pancreatic tumor cells and genetically engineered KRASG12D mouse models of PDAC. An in vivo biodistribution study was performed with the 64Cu-radiolabled scFv in a syngeneic murine pancreatic cancer model, demonstrating both the feasibility and potential of an anti-RAGE scFv for detection of PDAC. These studies hold great promise for translation into the clinic.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Carcinoma, Pancreatic Ductal / diagnostic imaging*
  • Carcinoma, Pancreatic Ductal / pathology
  • Cell Line, Tumor
  • Copper Radioisotopes / analysis
  • Disease Models, Animal
  • Female
  • Humans
  • Mice
  • Mice, Inbred C57BL
  • Pancreas / diagnostic imaging*
  • Pancreas / pathology
  • Pancreatic Neoplasms / diagnostic imaging*
  • Pancreatic Neoplasms / pathology
  • Positron-Emission Tomography / methods*
  • Receptor for Advanced Glycation End Products / analysis*
  • Single-Chain Antibodies / analysis*

Substances

  • Copper Radioisotopes
  • Copper-64
  • Receptor for Advanced Glycation End Products
  • Single-Chain Antibodies