miR-1307-3p promotes tumor growth and metastasis of hepatocellular carcinoma by repressing DAB2 interacting protein - 31/07/19
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Graphical abstract |
Highlights |
• | miR-1307-3p expression is obviously increased in HCC. |
• | The high level of miR-1307-3p confers to poor prognosis of HCC. |
• | miR-1307-3p promotes the growth and metastasis of HCC cells. |
• | DAB2IP is a novel direct target of miR-1307-3p. |
• | DAB2IP mediates the oncogenic role of miR-1307-3p in HCC. |
Abstract |
Increasing studies provide evidence to support that microRNAs (miRNAs) play important roles in regulating hepatocellular carcinoma (HCC) initiation and progression. However, whether miR-1307-3p is aberrantly expressed in HCC and affects malignant behaviors of cancer cells remain unknown. In this study, we found that miR-1307-3p expression was obviously up-regulated in HCC compared to adjacent nontumor tissues. Moreover, miR-1307-3p expression was prominently higher in HCC cells compared with the normal hepatic cell line LO2. Patients with venous infiltration, tumor size ≥5 cm and advanced tumor stages (III + IV) had significant higher levels of miR-1307-3p in HCC tissues. Notably, the high level of miR-1307-3p predicted poor clinical outcomes of HCC patients. Functionally, miR-1307-3p knockdown inhibited the proliferation, migration and invasion of MHCC97H and HCCLM3 cells, and suppressed the in vivo growth and metastasis of HCCLM3 cells. Conversely, overexpression of miR-1307-3p facilitated Hep3B cell proliferation, migration and invasion. Mechanistically, DAB2 interacting protein (DAB2IP) was screened as a direct target of miR-1307-3p. The expression of DAB2IP mRNA was down-regulated and inversely correlated with miR-1307-3p level in HCC tissues. miR-1307-3p knockdown increased the level of DAB2IP in HCC cells. Luciferase reporter assay confirmed the direct interaction between miR-1307-3p and 3′UTR of DAB2IP. Importantly, DAB2IP overexpression significantly suppressed the proliferation, migration and invasion of HCCLM3 cells. DAB2IP knockdown rescued miR-1307-3p silencing-attenuated HCC cell proliferation, migration and invasion. Taken together, our findings suggest that miR-1307-3p plays a driving role in HCC progression by targeting DAB2IP. Our study may provide new therapeutic targets for HCC treatment.
Le texte complet de cet article est disponible en PDF.Abbreviations : HCC, miRNAs, 3′UTRs, PPAR-γ, EMT, UBE3C, S100A4, RCC, TKI, DAB2IP, VKORC1L1, GATAD2B, EML2, KDM6B, TMEM161A, DNMTs, hnRNPK, MMP2
Keywords : HCC, miR-1307-3p, DAB2IP, Tumor growth, Tumor metastasis
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Vol 117
Article 109055- septembre 2019 Retour au numéroBienvenue sur EM-consulte, la référence des professionnels de santé.
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