Abstract:
:A search for general regulators of cancer metastasis has yielded a set of microRNAs for which expression is specifically lost as human breast cancer cells develop metastatic potential. Here we show that restoring the expression of these microRNAs in malignant cells suppresses lung and bone metastasis by human cancer cells in vivo. Of these microRNAs, miR-126 restoration reduces overall tumour growth and proliferation, whereas miR-335 inhibits metastatic cell invasion. miR-335 regulates a set of genes whose collective expression in a large cohort of human tumours is associated with risk of distal metastasis. miR-335 suppresses metastasis and migration through targeting of the progenitor cell transcription factor SOX4 and extracellular matrix component tenascin C. Expression of miR-126 and miR-335 is lost in the majority of primary breast tumours from patients who relapse, and the loss of expression of either microRNA is associated with poor distal metastasis-free survival. miR-335 and miR-126 are thus identified as metastasis suppressor microRNAs in human breast cancer.
journal_name
Naturejournal_title
Natureauthors
Tavazoie SF,Alarcón C,Oskarsson T,Padua D,Wang Q,Bos PD,Gerald WL,Massagué Jdoi
10.1038/nature06487subject
Has Abstractpub_date
2008-01-10 00:00:00pages
147-52issue
7175eissn
0028-0836issn
1476-4687pii
nature06487journal_volume
451pub_type
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