Abstract

Renal cell carcinoma (RCC) is a malignant tumor originating from renal tubular epithelial cells with poor prognosis and high metastatic rate. Tripartite motif-containing 24 (Trim24) is a member of the tripartite motif (Trim) family and also a valuable oncogene, but its role in RCC remains unclear. We constructed the overexpression and knockdown of Trim24 cell lines to investigate its roles in RCC progression. CCK8, wound healing, and transwell assay were performed to determine the proliferation, migration, and invasion of RCC cell lines, respectively. Moreover, the expression of Trim24 and its clinicopathological significance were evaluated in a human RCC tissue microarray. From our results, Trim24 promoted the proliferation, migration, and invasion of RCC cells in vitro. Importantly, overexpression of Trim24 led to a significant increase in the expression levels of MMP-2, MMP-9, fibronectin, snail, vimentin, N-cadherin, and β-catenin, inducing the EMT process in turn, while the expression of these proteins was significantly downregulated when Trim24 was knocked down in ACHN cells. In addition, Trim24 was significantly upregulated in RCC, and its high expression was negatively associated with the tumor size. Trim24 might operate as an oncogene in RCC progression by inducing the EMT process, suggesting that Trim24 was a potential target for human RCC.

Highlights

  • Renal cell carcinoma (RCC) is a malignant tumor originating from renal tubular epithelial cells with poor prognosis and high metastatic rate

  • 3.1 Tripartite motifcontaining 24 (Trim24) promoted the proliferation in RCC cells the contrary, the closed wound area was significantly reduced in group sh than in group shRNA as a knockdown negative control (sh-NC) (Figure 2d and e)

  • Trim24 overexpression induced more cells to pass through the chambers with matrigel, while low Trim24 expression inhibited the invasive potential of ACHN cells (Figure 4a and b)

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Summary

Introduction

Abstract: Renal cell carcinoma (RCC) is a malignant tumor originating from renal tubular epithelial cells with poor prognosis and high metastatic rate. We constructed the overexpression and knockdown of Trim cell lines to investigate its roles in RCC progression. CCK8, wound healing, and transwell assay were performed to determine the proliferation, migration, and invasion of RCC cell lines, respectively. Overexpression of Trim led to a significant increase in the expression levels of MMP-2, MMP-9, fibronectin, snail, vimentin, N-cadherin, and β-catenin, inducing the EMT process in turn, while the expression of these proteins was significantly downregulated when Trim was knocked down in ACHN cells. Trim was significantly upregulated in RCC, and its high expression was negatively associated with the tumor size. Trim might operate as an oncogene in RCC progression by inducing the EMT process, suggesting that Trim was a potential target for human RCC

Methods
Results
Conclusion

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