Near-infrared fluorescence molecular imaging of ductal carcinoma in situ with CD44v6-specific antibodies in mice: a preclinical study

Mol Imaging Biol. 2013 Jun;15(3):290-8. doi: 10.1007/s11307-012-0605-8.


Purpose: The purpose of this study was to develop a molecular imaging technique using tracers specific for ductal carcinoma in situ (DCIS) to improve visualization and localization of DCIS during surgery. As CD44v6 is frequently expressed in DCIS, we used near-infrared fluorescently labeled CD44v6-targeting antibodies for detection of DCIS.

Procedure: Mice bearing orthotopically transplanted CD44v6-positive MCF10DCIS DCIS-like tumors and CD44v6-negative MDA-MB-231 control tumors were intravenously injected with IRDye800CW conjugated to CD44v6-specific antibodies or control IgGs. Noninvasive imaging was performed for 8 days postinjection, followed by intraoperative imaging. Antibody accumulation and intratumor distribution were examined.

Results: Maximum accumulation of CD44v6-specific antibodies was obtained 24 h postinjection. Maximum tumor-to-background ratio for MCF10DCIS tumors was 4.5 ± 0.2, compared to 1.4 ± 0.1 (control tumors, p = 0.006), and 1.7 ± 0.1 (control IgG, p = 0.014), for 8 days postinjection. Ex vivo, tumor-to-background ratios were comparable to those obtained by intraoperative imaging.

Conclusions: We show the applicability of noninvasive and intraoperative optical imaging of DCIS-like lesions in vivo using CD44v6-specific antibodies.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Antibodies, Neoplasm*
  • Breast Neoplasms / diagnosis*
  • Breast Neoplasms / immunology
  • Breast Neoplasms / pathology
  • Breast Neoplasms / surgery
  • Carcinoma, Intraductal, Noninfiltrating / diagnosis*
  • Carcinoma, Intraductal, Noninfiltrating / immunology
  • Carcinoma, Intraductal, Noninfiltrating / pathology
  • Carcinoma, Intraductal, Noninfiltrating / surgery
  • Cell Line, Tumor
  • Female
  • Fluorescence
  • Humans
  • Hyaluronan Receptors / immunology*
  • Intraoperative Care
  • Mammary Neoplasms, Animal / diagnosis*
  • Mammary Neoplasms, Animal / immunology
  • Mammary Neoplasms, Animal / pathology
  • Mammary Neoplasms, Animal / surgery
  • Mice
  • Molecular Imaging / methods*
  • Tissue Distribution


  • Antibodies, Neoplasm
  • CD44v6 antigen
  • Hyaluronan Receptors