Cancer-Secreted miR-105 destroys vascular endothelial barriers to promote metastasis

  • Weiying Zhou
  • , Miranda Y. Fong
  • , Yongfen Min
  • , George Somlo
  • , Liang Liu
  • , Melanie R. Palomares
  • , Yang Yu
  • , Amy Chow
  • , Sean Timothy Francis O'Connor
  • , Andrew R. Chin
  • , Yun Yen
  • , Yafan Wang
  • , Eric G. Marcusson
  • , Peiguo Chu
  • , Jun Wu
  • , Xiwei Wu
  • , Arthur Xuejun Li
  • , Zhuo Li
  • , Hanlin Gao
  • , Xiubao Ren
  • Mark P. Boldin, Pengnian Charles Lin, Shizhen Emily Wang

Research output: Contribution to journalArticlepeer-review

1283 Citations (Scopus)

Abstract

Cancer-secreted microRNAs (miRNAs) are emerging mediators of cancer-host crosstalk. Here we show that miR-105, which is characteristically expressed and secreted by metastatic breast cancer cells, is a potent regulator of migration through targeting the tight junction protein ZO-1. In endothelial monolayers, exosome-mediated transfer of cancer-secreted miR-105 efficiently destroys tight junctions and the integrity of these natural barriers against metastasis. Overexpression of miR-105 in nonmetastatic cancer cells induces metastasis and vascular permeability in distant organs, whereas inhibition of miR-105 in highly metastatic tumors alleviates these effects. miR-105 can be detected in the circulation at the premetastatic stage, and its levels in the blood and tumor are associated with ZO-1 expression and metastatic progression in early-stage breast cancer.

Original languageEnglish
Pages (from-to)501-515
Number of pages15
JournalCancer Cell
Volume25
Issue number4
DOIs
Publication statusPublished - Apr 14 2014

ASJC Scopus subject areas

  • Oncology
  • Cancer Research

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