16 research outputs found

    MiR-324-5p Suppresses Hepatocellular Carcinoma Cell Invasion by Counteracting ECM Degradation through Post-Transcriptionally Downregulating ETS1 and SP1.

    No full text
    Hepatocellular carcinoma (HCC) is one of the common malignancies, which is highly metastatic and the third common cause of cancer deaths in the world. The invasion and metastasis of cancer cells is a multistep and complex process which is mainly initiated by extracellular matrix (ECM) degradation. Aberrant expression of microRNA has been investigated in HCC and shown to play essential roles during HCC progression. In the present study, we found that microRNA-324-5p (miR-324-5p) was downregulated in both HCC cell lines and tissues. Ectopic miR-324-5p led to the reduction of HCC cells invasive and metastatic capacity, whereas inhibition of miR-324-5p promoted the invasion of HCC cells. Matrix metalloproteinase 2 (MMP2) and MMP9, the major regulators of ECM degradation, were found to be downregulated by ectopic miR-324-5p, while upregulated by miR-324-5p inhibitor. E26 transformation-specific 1 (ETS1) and Specificity protein 1 (SP1), both of which could modulate MMP2 and MMP9 expression and activity, were presented as the direct targets of and downregulated by miR-324-5p. Downregulation of ETS1 and SP1 mediated the inhibitory function of miR-324-5p on HCC migration and invasion. Our study demonstrates that miR-324-5p suppresses hepatocellular carcinoma cell invasion and might provide new clues to invasive HCC therapy

    One-Pot Three-Component Approach to the Synthesis of Polyfunctional Pyrazoles

    No full text
    A simple, multicomponent, and straightforward reaction of vinyl azide, aldehyde, and tosylhydrazine affords the construction of 3,4,5-trisubstituted 1<i>H</i>-pyrazoles regioselectively in the presence of base with moderate to excellent yields. A range of functionality could be tolerated in this methodology, and a possible mechanism is proposed

    Inhibition of miR-324-5p promotes invasion and migration of HCC cells.

    No full text
    <p><b>A.</b> Representative micrographs (left) and quantifications (right) of wound healing assay of the HCC cells, transfected with miR-324-5p inhibitor or negative control (NC). Wound closures were photographed at 0, 12 and 24 hours after wounding. <b>B.</b> Representative micrographs (left) and quantifications (right) of indicated invading cells in a Matrigel-coated Transwell assay. <b>C.</b> Representative micrographs of indicated cells grown on Matrigel for 10 days in 3-Dimensional Cell Culture. <b>D.</b> Real-time PCR analysis of MMP2 and MMP9 expression in indicated cells. <i>GAPDH</i> served as control. <b>E.</b> The activity of MMP2 and MMP9 in indicated cells determined by ELISA assay. Each bar represents the mean ± SD of three independent experiments. * <i>P</i> <0.05.</p

    MiR-324-5p is downregulated in both HCC cell lines and tissues.

    No full text
    <p><b>A.</b> Real-time PCR analysis of miR-324-5p expression in hepatocellular carcinoma cell lines (HepG2, Hep3B, MHCC97H, MHCC97L, BEL-7402, Huh7, SMMC-7721, PLC/PRF/5 and QGY-7703), compared with normal liver epithelial THLE3 cells. <b>B.</b> The expression of miR-324-5p was examined in eleven paired cancerous tissues (T) and their adjacent noncancerous hepatic tissues (ANT). The result is performed as the ratio of T and ANT. The average miR-324-5p expression was normalized using U6 expression. Each bar represents the mean ± SD of three independent experiments. * <i>P</i> <0.05.</p

    ETS1 and SP1 suppression are essential for miR-324-5p-inhibited cell migration, invasion and ECM degradation in HCC.

    No full text
    <p><b>A.</b> The expression levels of ETS1 or SP1 in miR-324-5p-inhibitor transfected HCC cells that were transfected with ETS1 or SP1-siRNA, as measured by western blotting; α-Tubulin served as the loading control. <b>B.</b> Quantification of indicated invading cells in a Matrigel-coated Transwell assay. <b>C.</b> Real-time PCR analysis of MMP2 and MMP9 expression in indicated cells. <i>GAPDH</i> served as control. <b>D.</b> The activity of MMP2 and MMP9 in indicated cells determined by ELISA assay. Each bar represents the mean ± SD of three independent experiments. * <i>P</i> <0.05.</p

    ETS1 and SP1 are the direct targets of miR-324-5p.

    No full text
    <p><b>A.</b> Schematic representation of the mature miR-324-5p sequence, miR-324-5p target site in the 3'-UTR of <i>ETS1</i> and <i>SP1</i> mRNA and a 3'-UTR mutant of <i>ETS1</i> and <i>SP1</i> mRNA containing three altered nucleotides in the putative target site (shown as <i>ETS1</i> or <i>SP1</i>-3'UTR-mu). <b>B.</b> The expression levels of ETS1 and SP1 protein in HCC cells overexpressing miR-324-5p or transfected with miR-324-5p inhibitor, compared with control cells, by western blotting 48 hours after transfection; α-Tubulin served as the loading control. <i>C.</i> Luciferase assay of pGL3- <i>ETS1</i>-3'UTR or pGL3- <i>ETS1</i>-3'UTR-mut reporter, pGL3- <i>SP1</i>-3'UTR or pGL3- <i>SP1</i>-3'UTR-mut reporter cotransfected with different amounts (25, 50nM) of miR-324-5p mimic in indicated cells, or different amounts (50, 100nM) of miR-324-5p inhibitor, compared with negative control (NC). Each bar represents the mean ± SD of three independent experiments. * <i>P</i> <0.05.</p

    Ectopic expression of miR-324-5p inhibits HCC cells migration and invasion.

    No full text
    <p><b>A.</b> Representative micrographs (left) and quantifications (right) of wound healing assay of the indicated cells. Wound closures were photographed at 0, 12 and 24 hours after wounding. <b>B.</b> Representative micrographs (left) and quantifications (right) of indicated invading cells in a Matrigel-coated Transwell assay. <b>C.</b> Representative micrographs of indicated cells grown on Matrigel for 10 days in 3-Dimensional Cell Culture. <b>D.</b> Real-time PCR analysis of MMP2 and MMP9 expression in indicated cells. <i>GAPDH</i> served as control. <b>E.</b> The activity of MMP2 and MMP9 in indicated cells determined by ELISA assay. Each bar represents the mean ± SD of three independent experiments. * <i>P</i> <0.05.</p
    corecore