Mesenchymal gene program-expressing ovarian cancer spheroids exhibit enhanced mesothelial clearance

Rachel A. Davidowitz, Laura M. Selfors, Marcin P. Iwanicki, Kevin M. Elias, Alison Karst, Huiying Piao, Tan A. Ince, Michael G. Drage, Judy Dering, Gottfried E. Konecny, Ursula Matulonis, Gordon Mills, Dennis J. Slamon, Ronny Drapkin, Joan S. Brugge

Research output: Contribution to journalArticle

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Abstract

Metastatic dissemination of ovarian tumors involves the invasion of tumor cell clusters into the mesothelial cell lining of peritoneal cavity organs; however, the tumor-specific factors that allow ovarian cancer cells to spread are unclear. We used an in vitro assay that models the initial step of ovarian cancer metastasis, clearance of the mesothelial cell layer, to examine the clearance ability of a large panel of both established and primary ovarian tumor cells. Comparison of the gene and protein expression profiles of clearance-competent and clearance-incompetent cells revealed that mesenchymal genes are enriched in tumor populations that display strong clearance activity, while epithelial genes are enriched in those with weak or undetectable activity. Overexpression of transcription factors SNAI1, TWIST1, and ZEB1, which regulate the epithelial-to-mesenchymal transition (EMT), promoted mesothelial clearance in cell lines with weak activity, while knockdown of the EMT-regulatory transcription factors TWIST1 and ZEB1 attenuated mesothelial clearance in ovarian cancer cell lines with strong activity. These findings provide important insights into the mechanisms associated with metastatic progression of ovarian cancer and suggest that inhibiting pathways that drive mesenchymal programs may suppress tumor cell invasion of peritoneal tissues.

Original languageEnglish (US)
Pages (from-to)2611-2625
Number of pages15
JournalJournal of Clinical Investigation
Volume124
Issue number6
DOIs
StatePublished - Jun 2 2014
Externally publishedYes

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Ovarian Neoplasms
Genes
Neoplasms
Epithelial-Mesenchymal Transition
Transcription Factors
Cell Line
Peritoneal Cavity
Transcriptome
Neoplasm Metastasis
Population
Proteins

ASJC Scopus subject areas

  • Medicine(all)

Cite this

Davidowitz, R. A., Selfors, L. M., Iwanicki, M. P., Elias, K. M., Karst, A., Piao, H., ... Brugge, J. S. (2014). Mesenchymal gene program-expressing ovarian cancer spheroids exhibit enhanced mesothelial clearance. Journal of Clinical Investigation, 124(6), 2611-2625. https://doi.org/10.1172/JCI69815

Mesenchymal gene program-expressing ovarian cancer spheroids exhibit enhanced mesothelial clearance. / Davidowitz, Rachel A.; Selfors, Laura M.; Iwanicki, Marcin P.; Elias, Kevin M.; Karst, Alison; Piao, Huiying; Ince, Tan A.; Drage, Michael G.; Dering, Judy; Konecny, Gottfried E.; Matulonis, Ursula; Mills, Gordon; Slamon, Dennis J.; Drapkin, Ronny; Brugge, Joan S.

In: Journal of Clinical Investigation, Vol. 124, No. 6, 02.06.2014, p. 2611-2625.

Research output: Contribution to journalArticle

Davidowitz, RA, Selfors, LM, Iwanicki, MP, Elias, KM, Karst, A, Piao, H, Ince, TA, Drage, MG, Dering, J, Konecny, GE, Matulonis, U, Mills, G, Slamon, DJ, Drapkin, R & Brugge, JS 2014, 'Mesenchymal gene program-expressing ovarian cancer spheroids exhibit enhanced mesothelial clearance', Journal of Clinical Investigation, vol. 124, no. 6, pp. 2611-2625. https://doi.org/10.1172/JCI69815
Davidowitz, Rachel A. ; Selfors, Laura M. ; Iwanicki, Marcin P. ; Elias, Kevin M. ; Karst, Alison ; Piao, Huiying ; Ince, Tan A. ; Drage, Michael G. ; Dering, Judy ; Konecny, Gottfried E. ; Matulonis, Ursula ; Mills, Gordon ; Slamon, Dennis J. ; Drapkin, Ronny ; Brugge, Joan S. / Mesenchymal gene program-expressing ovarian cancer spheroids exhibit enhanced mesothelial clearance. In: Journal of Clinical Investigation. 2014 ; Vol. 124, No. 6. pp. 2611-2625.
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