miR-613 inhibits cell migration and invasion by downregulating Daam1 in triple-negative breast cancer

miR-613 inhibits cell migration and invasion by downregulating Daam1 in triple-negative breast... Dishevelled-associated activator of morphogenesis 1 (Daam1) is a formin protein and participates in regulating cell migration of triple-negative breast cancer (TNBC) cells. The specific miRNA targeting Daam1 and mediating cell migration and invasion remains obscure. This experiment investigated the suppressive role of miR-613 in TNBC cells. The luciferase activity of Daam1 3′-untranslated region (3′-UTR) based reporters constructed in HEK-293T and MCF-7 cells suggested that Daam1 was the target gene of miR-613. Overexpressed miR-613 reduced the protein level of Daam1, weakened RhoA activity, and retarded the cell migration, cell invasion and colony formation of TNBC cells. Overexpression of Daam1 or RhoA rescued cell migration and invasion in miR-613-overexpressed TNBC cells, but failed to reverse colony formation. MiR-613 was significantly downregulated in breast cancer tissues compared with that in adjacent normal tissues. This downregulation in TNBC tissues and lymphnode metastatic breast cancer tissues was more obvious than that in non-TNBC tissues and non-metastatic cancer tissues, respectively. MiR-613 weakens the resistance of TNBC cells against paclitaxel rather than adriamycin, cyclophosphamide, docetaxel, and kaempferol. Taken together, miR-613 is involved in cell migration and invasion of TNBC cells via targeting Daam1/RhoA signaling pathway. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Cellular Signalling Elsevier

miR-613 inhibits cell migration and invasion by downregulating Daam1 in triple-negative breast cancer

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Publisher
Elsevier
Copyright
Copyright © 2018 Elsevier Ltd
ISSN
0898-6568
eISSN
1873-3913
D.O.I.
10.1016/j.cellsig.2018.01.013
Publisher site
See Article on Publisher Site

Abstract

Dishevelled-associated activator of morphogenesis 1 (Daam1) is a formin protein and participates in regulating cell migration of triple-negative breast cancer (TNBC) cells. The specific miRNA targeting Daam1 and mediating cell migration and invasion remains obscure. This experiment investigated the suppressive role of miR-613 in TNBC cells. The luciferase activity of Daam1 3′-untranslated region (3′-UTR) based reporters constructed in HEK-293T and MCF-7 cells suggested that Daam1 was the target gene of miR-613. Overexpressed miR-613 reduced the protein level of Daam1, weakened RhoA activity, and retarded the cell migration, cell invasion and colony formation of TNBC cells. Overexpression of Daam1 or RhoA rescued cell migration and invasion in miR-613-overexpressed TNBC cells, but failed to reverse colony formation. MiR-613 was significantly downregulated in breast cancer tissues compared with that in adjacent normal tissues. This downregulation in TNBC tissues and lymphnode metastatic breast cancer tissues was more obvious than that in non-TNBC tissues and non-metastatic cancer tissues, respectively. MiR-613 weakens the resistance of TNBC cells against paclitaxel rather than adriamycin, cyclophosphamide, docetaxel, and kaempferol. Taken together, miR-613 is involved in cell migration and invasion of TNBC cells via targeting Daam1/RhoA signaling pathway.

Journal

Cellular SignallingElsevier

Published: Apr 1, 2018

References

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