Pancreatic stellate cells are an important source of MMP-2 in human pancreatic cancer and accelerate tumor progression in a murine xenograft model and CAM assay

Wilhelm Schnelderhan, Fredy Diaz, Martin Fundel, Shaoxia Zhou, Marco Siech, Cornelia Hasel, Peter Möller, Jürgen E. Gschwend, Thomas Seufferlein, Thomas Gress, Guido Adler, Max G. Bachem

Research output: Contribution to journalArticlepeer-review

98 Scopus citations

Abstract

The effect of the characteristic desmoplastic reaction of pancreatic cancer on tumor progression is largely unknown. We investigated whether pancreatic stellate cells, which are responsible for the desmoplastic reaction, support tumor progression. Immunohistology revealed that matrix metalloproteinase-2 (MMP-2), which is suggested to promote pancreatic cancer progression, is present in stellate cells adjacent to cancer cells. In vitro, stellate cells exhibited a much higher basal expression of MMP-2 compared with cancer cells. Panc1-, MiaPaCa2- and SW850-conditioned media stimulated MMP-2 release of stellate cells as detected by zymography. Cancer cells expressed and released basigin [BSG, extracellular matrix metalloproteinase inducer (EMMPRIN), CD147], a glycoprotein that is known to stimulate MMP-2 in mesenchymal cells, as detected by immunostaining, western blot and reverse transcription-polymerase chain reaction. Tumor cell-conditioned medium and BSG purified by affinity chromatography from supernatants of cancer cells, but not supernatants depleted from BSG, stimulated expression of MMP-1 and MMP-2 of stellate cells as demonstrated by western blot and zymography. Moreover, the interaction of stellate cells and cancer cells promoted the invasiveness of Panc-1 cells in the chorioallantoic membrane assay and increased the weight of tumors induced by all carcinoma cell lines in nude mice by 2.1-3.7-fold. Our findings support the assumption that the interaction of stellate cells cancer cells promotes progression of pancreatic cancer.

Original languageEnglish
Pages (from-to)512-519
Number of pages8
JournalJournal of Cell Science
Volume120
Issue number3
DOIs
StatePublished - 1 Feb 2007
Externally publishedYes

Keywords

  • Matrix metalloproteinases
  • Mouse xenograft model
  • Pancreatic adenocarcinoma
  • Pancreatic stellate cell
  • Tumor-host interaction

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