scholarly journals SNHG12 Regulated by KMT2B Participates in the Pathogenesis of Renal Cell Carcinoma via E2F1/CEP55

2022 ◽  
Author(s):  
Jia-fu Feng ◽  
Jun Wang ◽  
Gang Xie ◽  
Yao-dong Wang ◽  
Xiao-han Li ◽  
...  
Keyword(s):  
Renal Cell Carcinoma ◽  
Cell Proliferation ◽  
Cell Carcinoma ◽  
Renal Cell ◽  
Promoter Region ◽  
Xenograft Model ◽  
Tumor Formation ◽  
Luciferase Reporter ◽  
Migration And Invasion ◽  
Mouse Xenograft Model

Abstract Objective: This study is to investigate the regulation of long non-coding RNA (lncRNA) SNHG12 promoter methylation modification by KMT2B and the mechanism of SNHG12 in the development of renal cell carcinoma (RCC) involving E2F1/CEP55 axis.Methods: TCGA and GEO databases were used to predict the involvement of SNHG12 in RCC. Knockdown of SNHG12/E2F1/CEP55 was performed. Next, SNHG12 expression and other mRNAs were analyzed by RT-qPCR. Subsequently, CCK-8 was used to detect cell proliferation. Wound healing test and Transwell assay was used to detect cell migration and invasion, respectively. The vascularization of HUVEC was explored by in vitro pseudotubule formation. CHIP was used to detect H3K4me3 in SNHG12 promoter region. The binding of E2F1 and CEP55 promoter region was analyzed with CHIP and dual luciferase reporter assay. RIP was used to detect the binding of SNHG12 and E2F1. Finally, the effect of SNHG12 on the tumor formation and angiogenesis of RCC was assessed in nude mouse xenograft model.Results: Bioinformatics analysis showed that SNHG12 was highly expressed in RCC tissues and cells, and it was related to the poor prognosis of RCC patients. SNHG12 knockdown significantly inhibited RCC cell proliferation, migration, and invasion and HUVEC angiogenesis. KMT2B up-regulated SNHG12 through modifying H3K4me3 in its promoter region. In addition, SNHG12 promoted CEP55 expression by recruiting the transcription factor E2F1. Knockdown of SNHG12 blocked E2F1 recruitment, thereby down-regulating the expression of CEP55, and inhibited tumor formation and angiogenesis of RCC cells in nude mice.Conclusion: KMT2B up-regulates SNHG12 via the modification of H3K4me3 in its promoter region. SNHG12 recruits E2F1 to promote the expression of CEP55, and ultimately promotes RCC cell proliferation, migration, and invasion and HUVEC angiogenesis.

scholarly journals Mir-144-3p Promotes Cell Proliferation, Metastasis, Sunitinib Resistance in Clear Cell Renal Cell Carcinoma by Downregulating ARID1A

2017 ◽  
Vol 43 (6) ◽  
pp. 2420-2433 ◽  
Author(s):  
Wen Xiao ◽  
Ning Lou ◽  
Hailong Ruan ◽  
Lin Bao ◽  
Zhiyong Xiong ◽  
...  
Keyword(s):  
Renal Cell Carcinoma ◽  
Cell Proliferation ◽  
Cell Carcinoma ◽  
Renal Cell ◽  
Clear Cell ◽  
Xenograft Model ◽  
Luciferase Reporter ◽  
Loss Of Function ◽  
Cell Renal Cell Carcinoma

Background/Aims: We previously performed microRNA (miRNA) microarray to identify effective indicators of clear cell renal cell carcinoma (ccRCC) tissue samples and preoperative/postoperative plasma in which we identified miR-144-3p as an oncomiRNA. However, the molecular mechanism of miR-144-3p remains unclear. This study aims to explore the roles of miR-144-3p in the invasion, migration and Sunitinib-resistance in ccRCC and to elucidate the underlying mechanisms. Methods: Gain and loss of function approaches were used to investigate the cell proliferation, cycle distribution, clonogenicity, migration, invasion, chemosensitivity of miR-144-3p in vitro. The xenograft model was used to assess the effects of miR-144-3p overexpression on tumorigenesis. Bioinformatics analysis and dual-luciferase reporter assay were used to indentify AT-rich interactive domain 1A (ARID1A) as a direct target gene of miR-144-3p. Quantitative RT-PCR, Western blotting, and immunohistochemical (IHC) staining were used to explore ARID1A expression level of the mRNA and protein. Results: We found that miR-144-3p overexpression enhanced cell proliferation, clonogenicity, migration, invasion, and chemoresistance in ccRCC cells. Notably, the oncotumor activities of miR-144-3p were mediated by repressing the expression of ARID1A. The downregulation of ARIDIA could promote the function of miR-144-3p in cell proliferation, metastasis and chemoresistance. Consistently, ARID1A mRNA and protein levels were decreased in ccRCC and in nude mice, and they negatively correlated with miR-144-3p. Conclusion: Higher miR-144-3p may enhance malignancy and resistance to Sunitinib in ccRCC by targeting ARID1A, the observations may uncover novel strategies of ccRCC treatment.

scholarly journals LncRNA FAM83H-AS1 promotes aerobic glycolysis and tumor progression by regulating miR-4684-5p/ZBTB38 axis in esophageal squamous cell carcinoma

2020 ◽  
Author(s):  
Cuijuan Qian ◽  
Zhurong Xu ◽  
Luyan Chen ◽  
Yichao Wang ◽  
Jun Yao
Keyword(s):  
Cell Proliferation ◽  
Squamous Cell Carcinoma ◽  
Esophageal Squamous Cell Carcinoma ◽  
Cell Carcinoma ◽  
Squamous Cell ◽  
Aerobic Glycolysis ◽  
Xenograft Model ◽  
Luciferase Reporter ◽  
Migration And Invasion ◽  
Mouse Xenograft Model

Abstract Background: Dysregulation of lncRNAs is implicated in esophageal squamous cell carcinoma (ESCC) progression; However, the precise function of lncRNA FAM83H-AS1 in ESCC remains unknown. Methods: FAM83H-AS1, miR-4684-5p and ZBTB38 mRNA expressions were detected via qRT-PCR. ZBTB38, GLUT1 and LDH-A protein expressions were tested via Western blot. Cell proliferation, migration and invasion were evaluated via CCK-8 and transwell assay, respectively. A nude mouse xenograft model was used to investigate the role of FAM83H-AS1 in xenograft ESCC growth. The metabolic shift in ESCC cells was examined via glycolysis analysis. The interaction between FAM83H-AS1, miR-4684-5p and ZBTB38 was analyzed via computational algorithms, RNA pull-down, RIP and dual luciferase reporter assay. Results: We found that FAM83H-AS1 was upmodulated in ESCC cell lines. FAM83H-AS1 knockdown hampered ESCC cell proliferation, migration, invasion and aerobic glycolysis, while FAM83H-AS1 overexpression demonstrated the opposite effects. FAM83H-AS1 knockdown also delayed the tumor growth in vivo. Moreover, FAM83H-AS1 interacted with miR-4684-5p/ZBTB38 axis in ESCC cells. ZBTB38 overexpression or miR-4684-5p inhibition partially reversed the inhibitory effect of FAM83H-AS1 knockdown on cell migration, invasion and aerobic glycolysis in ESCC cells. Conclusion: Our present results indicate FAM83H-AS1 accelerated aerobic glycolysis and tumorigenesis of ESCC by sponging miR-4684-5p and triggering the expression of ZBTB38, providing new insights into mechanism of ESCC progression and therapeutic strategy.

scholarly journals LncRNA FAM83H-AS1 Promotes Aerobic Glycolysis and Tumor Progression by Regulating miR-4684-5p/ZBTB38 Axis in Esophageal Squamous Cell Carcinoma

2020 ◽  
Author(s):  
Cuijuan Qian ◽  
Zhurong Xu ◽  
Luyan Chen ◽  
Yichao Wang ◽  
Jun Yao
Keyword(s):  
Cell Proliferation ◽  
Squamous Cell Carcinoma ◽  
Esophageal Squamous Cell Carcinoma ◽  
Cell Carcinoma ◽  
Squamous Cell ◽  
Aerobic Glycolysis ◽  
Xenograft Model ◽  
Luciferase Reporter ◽  
Migration And Invasion ◽  
Mouse Xenograft Model

Abstract Background: Dysregulation of lncRNAs is implicated in esophageal squamous cell carcinoma (ESCC) progression; However, the precise function of lncRNA FAM83H-AS1 in ESCC remains unknown. Methods: FAM83H-AS1, miR-4684-5p and ZBTB38 mRNA expressions were detected via qRT-PCR. ZBTB38, GLUT1 and LDH-A protein expressions were tested via Western blot. Cell proliferation, migration and invasion were evaluated via CCK-8 and transwell assay, respectively. A nude mouse xenograft model was used to investigate the role of FAM83H-AS1 in xenograft ESCC growth. The metabolic shift in ESCC cells was examined via glycolysis analysis. The interaction between FAM83H-AS1, miR-4684-5p and ZBTB38 was analyzed via computational algorithms, RNA pull-down, RIP and dual luciferase reporter assay. Results: We found that FAM83H-AS1 was upmodulated in ESCC cell lines. FAM83H-AS1 knockdown hampered ESCC cell proliferation, migration, invasion and aerobic glycolysis, while FAM83H-AS1 overexpression demonstrated the opposite effects. FAM83H-AS1 knockdown also delayed the tumor growth in vivo. Moreover, FAM83H-AS1 interacted with miR-4684-5p/ZBTB38 axis in ESCC cells. ZBTB38 overexpression or miR-4684-5p inhibition partially reversed the inhibitory effect of FAM83H-AS1 knockdown on cell migration, invasion and aerobic glycolysis in ESCC cells. Conclusion: Our present results indicate FAM83H-AS1 accelerated aerobic glycolysis and tumorigenesis of ESCC by sponging miR-4684-5p and triggering the expression of ZBTB38, providing new insights into mechanism of ESCC progression and therapeutic strategy.

scholarly journals RASA1 inhibits the progression of renal cell carcinoma by decreasing the expression of miR-223-3p and promoting the expression of FBXW7

2020 ◽  
Vol 40 (7) ◽  
Author(s):  
Rui-Li Zhang ◽  
Ainiwaer Aimudula ◽  
Jiang-Hong Dai ◽  
Yong-Xing Bao
Keyword(s):  
Renal Cell Carcinoma ◽  
Cell Proliferation ◽  
Cell Carcinoma ◽  
Renal Cell ◽  
Tumor Formation ◽  
Luciferase Reporter ◽  
Luciferase Reporter Gene ◽  
Gene Assay ◽  
The Impact

Abstract RAS p21 protein activator 1 (RASA1), also known as p120-RasGAP, is a RasGAP protein that functions as a signaling scaffold protein, regulating pivotal signal cascades. However, its biological mechanism in renal cell carcinoma (RCC) remains unknown. In the present study, RASA1, F-box/WD repeat-containing protein 7 (FBXW7), and miR-223-3p expression were assessed via quantitative reverse transcription-polymerase chain reaction (qRT-PCR) and Western blot. Then, the targeted correlations of miR-223-3p with FBXW7 and RASA1 were verified via a dual-luciferase reporter gene assay. CCK-8, flow cytometry, and Transwell assays were implemented independently to explore the impact of RASA1 on cell proliferation, apoptosis, migration, and cell cycle progression. Finally, the influence of RASA1 on tumor formation in RCC was assessed in vivo through the analysis of tumor growth in nude mice. Results showed that FBXW7 and RASA1 expression were decreased in RCC tissues and cell lines, while miR-223-3p was expressed at a higher level. Additionally, FBXW7 and RASA1 inhibited cell proliferation but facilitated the population of RCC cells in the G0/G1 phase. Altogether, RASA1 may play a key role in the progression of RCC by decreasing miR-223-3p and subsequently increasing FBXW7 expression.

The expression of Cullin1 is increased in renal cell carcinoma and promotes cancer cell proliferation, migration, and invasion

Tumor Biology ◽  
2016 ◽  
Vol 37 (9) ◽  
pp. 12823-12831 ◽  
Author(s):  
Ji-Gen Ping ◽  
Fei Wang ◽  
Jin-Xian Pu ◽  
Ping-Fu Hou ◽  
Yan-Su Chen ◽  
...  
Keyword(s):  
Renal Cell Carcinoma ◽  
Cell Proliferation ◽  
Cell Carcinoma ◽  
Cancer Cell ◽  
Renal Cell ◽  
Migration And Invasion ◽  
Cancer Cell Proliferation

scholarly journals Hypoxia-Regulated miR-146a Targets Cell Adhesion Molecule 2 to Promote Proliferation, Migration, and Invasion of Clear Cell Renal Cell Carcinoma

2018 ◽  
Vol 49 (3) ◽  
pp. 920-931 ◽  
Author(s):  
Long Yang ◽  
Guangning Zhao ◽  
Fan Wang ◽  
Chunchang Li ◽  
Xiangzhong Wang
Keyword(s):  
Renal Cell Carcinoma ◽  
Cell Proliferation ◽  
Renal Cell ◽  
Clear Cell ◽  
Luciferase Reporter Assay ◽  
Luciferase Reporter ◽  
Migration And Invasion ◽  
Reporter Assay ◽  
Cell Renal Cell Carcinoma ◽  
Promote Cell Proliferation

Background/Aims: miR-146a has recently been shown to promote cell proliferation, migration, and invasion in many cancers, but the role of miR-146a in clear cell renal cell carcinoma (ccRCC) remains unclear. Methods: Reverse transcription quantitative PCR (RT-qPCR) was performed to investigate the mRNA expression of miR-146a and CADM2 in ccRCC tissues. The luciferase reporter assay, Western blotting, and ChIP assay were carried out to explore the promoter and the transcription factor of miR-146a. Moreover, the effect of miR-146a and CADM2 on ccRCC cells was explored using methyl thiazolyl tetrazolium, colony formation, and migration and invasion assays. The luciferase reporter assay, RT-qPCR, western blotting, and immunofluorescence assay were carried out to investigate whether CADM2 is directly regulated by miR-146a. A tumor xenograft model and immunohistochemical staining were used to examine the carcinogenic effect of miR-146a and CADM2 in vivo. Results: miR-146a has been shown to promote cell proliferation, migration, and invasion. Here, we found that miR-146a is highly expressed in ccRCC tissues, whereas CADM2 is down-regulated. Hypoxia can induce the expression of miR-146a by stimulating its promoter. In addition, we demonstrated that miR-146a promoted and CADM2 inhibited proliferation, migration, and invasion of ccRCC cells. The 3’ untranslated region (UTR) luciferase reporter assay identified that miR-146a targeted the 3’ UTR of CADM2 and negatively regulated its expression. Ectopic expression of CADM2 counteracted the promoting effect of miR-146a on cell proliferation, migration, invasion, and the epithelial–mesenchymal transition process. Conclusion: Together, the finding of down-regulation of CADM2 by miR-146a can provide new insights into ccRCC pathogenesis and might contribute to the development of novel therapeutic strategies.

scholarly journals LncRNA UCA1 promotes renal cell carcinoma proliferation through epigenetically repressing p21 expression and negatively regulating miR-495

Tumor Biology ◽  
2017 ◽  
Vol 39 (5) ◽  
pp. 101042831770163 ◽  
Author(s):  
Yun Lu ◽  
Wei-Gang Liu ◽  
Jia-Hui Lu ◽  
Zhi Jun Liu ◽  
Hai-Bin Li ◽  
...  
Keyword(s):  
Renal Cell Carcinoma ◽  
Cell Proliferation ◽  
Urothelial Carcinoma ◽  
Cell Carcinoma ◽  
Renal Cell ◽  
Phase Cell ◽  
Luciferase Reporter ◽  
Advanced Tumor Stage ◽  
Advanced Tumor ◽  
Enhancer Of Zeste

Long non-coding RNAs have recently emerged as important regulators in the pathogenesis and progression of cancers. The long non-coding RNA urothelial carcinoma–associated 1 is reportedly upregulated and functions as an oncogene in some tumors. However, the role of urothelial carcinoma–associated 1 in renal cell carcinoma is not well elucidated so far. In this study, we found that urothelial carcinoma–associated 1 was overexpressed in renal cell carcinoma tissues compared with the adjacent normal tissues, and higher urothelial carcinoma–associated 1 expression levels were positively associated with advanced tumor stage and poor survival time in renal cell carcinoma patients. Further studies showed that knockdown of urothelial carcinoma–associated 1 suppressed renal cell carcinoma cell proliferation and S-phase cell number in vitro. Moreover, urothelial carcinoma–associated 1 was found to be associated with enhancer of zeste homolog 2, which suppressed p21 expression through histone methylation (H3K27me3) on p21 promoter. We also showed that knockdown of urothelial carcinoma–associated 1 increased the p21 protein expression through regulating enhancer of zeste homolog 2. In addition, bioinformatics analysis and dual-luciferase reporter assays confirmed that miR-495 was a target of urothelial carcinoma–associated 1 in renal cell carcinoma, and urothelial carcinoma–associated 1 promoted cell proliferation by negatively regulating miR-495. These findings illuminated that urothelial carcinoma–associated 1 promoted renal cell carcinoma progression through enhancer of zeste homolog 2 and interacted with miR-495. Overall, overexpression of urothelial carcinoma–associated 1 functions as an oncogene in renal cell carcinoma that may offer a novel therapeutic target for renal cell carcinoma patients.

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