Specific Targeting and Labeling of Colonic Polyps in CPC-APC Mice with Mucin 5AC Fluorescent Antibodies: A Model for Detection of Early Colon Cancer

Michael A. Turner, Kristin E. Cox, Shanglei Liu, Nicholas Neel, Siamak Amirfakhri, Hiroto Nishino, Mojgan Hosseini, Joshua A. Alcantara, Amer Ali Abd El-Hafeez, Thinzar M. Lwin, Kavita Mallya, Joseph R. Pisegna, Satish K. Singh, Pradipta Ghosh, Robert M. Hoffman, Surinder K. Batra, Michael Bouvet

Research output: Contribution to journalArticlepeer-review

Abstract

Poor visualization of polyps can limit colorectal cancer screening. Fluorescent antibodies to mucin5AC (MUC5AC), a glycoprotein upregulated in adenomas and colorectal cancer, could improve screening colonoscopy polyp detection rate. Adenomatous polyposis coli flox mice with a Cdx2-Cre transgene (CPC-APC) develop colonic polyps that contain both dysplastic and malignant tissue. Mice received MUC5AC-IR800 or IRdye800 as a control IV and were sacrificed after 48 h for near-infrared imaging of their colons. A polyp-to-background ratio (PBR) was calculated for each polyp by dividing the mean fluorescence intensity of the polyp by the mean fluorescence intensity of the background tissue. The mean 25 μg PBR was 1.70 (±0.56); the mean 50 μg PBR was 2.64 (±0.97); the mean 100 μg PBR was 3.32 (±1.33); and the mean 150 μg PBR was 3.38 (±0.87). The mean PBR of the dye-only control was 2.22 (±1.02), significantly less than the 150 μg arm (p-value 0.008). The present study demonstrates the ability of fluorescent anti-MUC5AC antibodies to specifically target and label colonic polyps containing high-grade dysplasia and intramucosal adenocarcinoma in CPC-APC mice. This technology can potentially improve the detection rate and decrease the miss rate of advanced colonic neoplasia and early cancer at colonoscopy.

Original languageEnglish (US)
Pages (from-to)3347-3358
Number of pages12
JournalCurrent Issues in Molecular Biology
Volume45
Issue number4
DOIs
StatePublished - Apr 2023

Keywords

  • colorectal cancer
  • detection
  • fluorescence
  • fluorescence labeling
  • genetically engineered mouse models
  • mucin
  • polyps

ASJC Scopus subject areas

  • Microbiology
  • Molecular Biology
  • Microbiology (medical)

Fingerprint

Dive into the research topics of 'Specific Targeting and Labeling of Colonic Polyps in CPC-APC Mice with Mucin 5AC Fluorescent Antibodies: A Model for Detection of Early Colon Cancer'. Together they form a unique fingerprint.

Cite this