MicroRNA expression characterizes oligometastasis(es).

Journal Article (Journal Article)

BACKGROUND: Cancer staging and treatment presumes a division into localized or metastatic disease. We proposed an intermediate state defined by ≤ 5 cumulative metastasis(es), termed oligometastases. In contrast to widespread polymetastases, oligometastatic patients may benefit from metastasis-directed local treatments. However, many patients who initially present with oligometastases progress to polymetastases. Predictors of progression could improve patient selection for metastasis-directed therapy. METHODS: Here, we identified patterns of microRNA expression of tumor samples from oligometastatic patients treated with high-dose radiotherapy. RESULTS: Patients who failed to develop polymetastases are characterized by unique prioritized features of a microRNA classifier that includes the microRNA-200 family. We created an oligometastatic-polymetastatic xenograft model in which the patient-derived microRNAs discriminated between the two metastatic outcomes. MicroRNA-200c enhancement in an oligometastatic cell line resulted in polymetastatic progression. CONCLUSIONS: These results demonstrate a biological basis for oligometastases and a potential for using microRNA expression to identify patients most likely to remain oligometastatic after metastasis-directed treatment.

Full Text

Duke Authors

Cited Authors

  • Lussier, YA; Xing, HR; Salama, JK; Khodarev, NN; Huang, Y; Zhang, Q; Khan, SA; Yang, X; Hasselle, MD; Darga, TE; Malik, R; Fan, H; Perakis, S; Filippo, M; Corbin, K; Lee, Y; Posner, MC; Chmura, SJ; Hellman, S; Weichselbaum, RR

Published Date

  • 2011

Published In

Volume / Issue

  • 6 / 12

Start / End Page

  • e28650 -

PubMed ID

  • 22174856

Pubmed Central ID

  • PMC3236765

Electronic International Standard Serial Number (EISSN)

  • 1932-6203

Digital Object Identifier (DOI)

  • 10.1371/journal.pone.0028650


  • eng

Conference Location

  • United States