MicroRNAs reprogram normal fibroblasts into cancer-associated fibroblasts in ovarian cancer

Anirban Mitra, Marion Zillhardt, Youjia Hua, Payal Tiwari, Andrea E. Murmann, Marcus E. Peter, Ernst Lengyel

Research output: Contribution to journalArticle

165 Citations (Scopus)

Abstract

Cancer-associated fibroblasts (CAF) are a major constituent of the tumor stroma, but little is known about how cancer cells transform normal fibroblasts into CAFs. microRNAs (miRNA) are small noncoding RNA molecules that negatively regulate gene expression at a posttranscriptional level. Although it is clearly established that miRNAs are deregulated in human cancers, it is not known whether miRNA expression in resident fibroblasts is affected by their interaction with cancer cells. We found that in ovarian CAFs, miR-31 and miR-214 were downregulated, whereas miR-155 was upregulated when compared with normal or tumor-adjacent fibroblasts. Mimicking this deregulation by transfecting miRNAs and miRNA inhibitors induced a functional conversion of normal fibroblasts into CAFs, and the reverse experiment resulted in the reversion of CAFs into normal fibroblasts. The miRNA-reprogrammed normal fibroblasts and patient-derived CAFs shared a large number of upregulated genes highly enriched in chemokines, which are known to be important for CAF function. The most highly upregulated chemokine, CCL5, (C-C motif ligand 5) was found to be a direct target of miR-214. These results indicate that ovarian cancer cells reprogram fibroblasts to become CAFs through the action of miRNAs. Targeting these miRNAs in stromal cells could have therapeutic benefit. SIGNIFICANCE: The mechanism by which quiescent fi broblasts are converted into CAFs is unclear. The present study identifi es a set of 3 miRNAs that reprogram normal fi broblasts to CAFs. These miRNAs may represent novel therapeutic targets in the tumor microenvironment.

Original languageEnglish (US)
Pages (from-to)1100-1108
Number of pages9
JournalCancer Discovery
Volume2
Issue number12
DOIs
StatePublished - Dec 2012
Externally publishedYes

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MicroRNAs
Ovarian Neoplasms
Fibroblasts
Neoplasms
Cancer-Associated Fibroblasts
Small Untranslated RNA
CC Chemokines
Tumor Microenvironment
Stromal Cells
Chemokines
Down-Regulation
Ligands
Gene Expression
Therapeutics

ASJC Scopus subject areas

  • Oncology

Cite this

Mitra, A., Zillhardt, M., Hua, Y., Tiwari, P., Murmann, A. E., Peter, M. E., & Lengyel, E. (2012). MicroRNAs reprogram normal fibroblasts into cancer-associated fibroblasts in ovarian cancer. Cancer Discovery, 2(12), 1100-1108. https://doi.org/10.1158/2159-8290.CD-12-0206

MicroRNAs reprogram normal fibroblasts into cancer-associated fibroblasts in ovarian cancer. / Mitra, Anirban; Zillhardt, Marion; Hua, Youjia; Tiwari, Payal; Murmann, Andrea E.; Peter, Marcus E.; Lengyel, Ernst.

In: Cancer Discovery, Vol. 2, No. 12, 12.2012, p. 1100-1108.

Research output: Contribution to journalArticle

Mitra, A, Zillhardt, M, Hua, Y, Tiwari, P, Murmann, AE, Peter, ME & Lengyel, E 2012, 'MicroRNAs reprogram normal fibroblasts into cancer-associated fibroblasts in ovarian cancer', Cancer Discovery, vol. 2, no. 12, pp. 1100-1108. https://doi.org/10.1158/2159-8290.CD-12-0206
Mitra, Anirban ; Zillhardt, Marion ; Hua, Youjia ; Tiwari, Payal ; Murmann, Andrea E. ; Peter, Marcus E. ; Lengyel, Ernst. / MicroRNAs reprogram normal fibroblasts into cancer-associated fibroblasts in ovarian cancer. In: Cancer Discovery. 2012 ; Vol. 2, No. 12. pp. 1100-1108.
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