Magnetization transfer MRI in pancreatic cancer xenograft models

Weiguo Li, Zhuoli Zhang, Jodi Nicolai, Guang Yu Yang, Reed A. Omary, Andrew C. Larson*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

25 Scopus citations

Abstract

Magnetization transfer magnetic resonance imaging measurements were performed in three pancreatic ductal adenocarcinoma mouse xenograft models. For each of 28 pancreatic ductal adenocarcinoma xenografts, MT ratios (MTRs) were calculated and compared to histologic fibrosis levels from reference standard trichrome staining. MTR was found to be significantly higher in tumors grown using BxPC-3 cell line (39.4 ± 5.1, mean ± SD) compared to the MTR for the tumors grown from Panc-1 (32.4 ± 2.8) and Capan-1 (27.3 ± 2.9) cell lines (P < 0.05 for each comparison). Histologic measurements showed a similar trend with BxPC-3 tumors demonstrating significantly higher fibrosis levels (percentage of fibrotic tissue area, 6.48 ± 2.59) when compared to Panc-1 (3.54 ± 2.18) and Capan-1 (2.07 ± 1.60) tumors. MTR measurements were well correlated to quantitative fibrosis levels (r = 0.69, P = 0.01). Results indicated that MTR measurements offer the potential to serve as a valuable in vivo biomarker of desmoplasia in pancreatic ductal adenocarcinoma. Magn Reson Med, 2012. © 2011 Wiley Periodicals, Inc.

Original languageEnglish (US)
Pages (from-to)1291-1297
Number of pages7
JournalMagnetic resonance in medicine
Volume68
Issue number4
DOIs
StatePublished - Oct 2012

Keywords

  • fibrosis
  • magnetization transfer
  • mouse xenograft model
  • pancreatic cancer

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging

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