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Objective@#To study the expression of microRNA-100 (miR-100) in hepatocellular carcinoma (HCC) tissues and cells, and further explore the function of miR-100 on invasion and metastasis of HCC.@*Methods@#A total of 50 patients with HCC from December 2016 to October 2018 in Department of Hepatobiliary Pancreatic Surgery, Henan Provincial People's Hospital were selected, including 32 males and 18 females, aged 20~78 years. PCR was used to detect the expression of miR-100 in HCC tissues, adjacent tissues and HCC cells. HCC cells were transfected with miR-100 sequence, inhibition sequence and corresponding negative control sequence to detect the migration and invasion ability of HCC cells after transfection.@*Results@#The expression of miR-100 was lowest in SMMC-7721 and MHCC-97H. The relative expression level of miR-100 in HCC tissues was significantly lower than that in normal adjacent liver tissues [(0.39±0.03) vs. (0.56±0.06)], and the difference was statistically significant (P<0.05). Compared with the negative control HCC cells, the migration and invasion of HCC cells with overexpression of miR-100 decreased, while the inhibition of miR-100 expression increased the migration and invasion of HCC cells.@*Conclusions@#The expression of miR-100 is low in human HCC tissues and cells. miR-100 inhibits the invasion and migration of HCC cells and plays an important role in the occurrence and development of HCC.
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Objective To study the expression of microRNA-100 ( miR-100 ) in hepatocellular carcinoma ( HCC) tissues and cells, and further explore the function of miR-100 on invasion and metastasis of HCC. Methods A total of 50 patients with HCC from December 2016 to October 2018 in Department of Hepatobiliary Pancreatic Surgery, Henan Provincial People's Hospital were selected, including 32 males and 18 females, aged 20～78 years. PCR was used to detect the expression of miR-100 in HCC tissues, adjacent tissues and HCC cells. HCC cells were transfected with miR-100 sequence, inhibition sequence and corre-sponding negative control sequence to detect the migration and invasion ability of HCC cells after transfec-tion. Results The expression of miR-100 was lowest in SMMC-7721 and MHCC-97H. The relative expres-sion level of miR-100 in HCC tissues was significantly lower than that in normal adjacent liver tissues [(0. 39 ± 0. 03) vs. (0. 56 ± 0. 06)], and the difference was statistically significant (P<0. 05). Compared with the negative control HCC cells, the migration and invasion of HCC cells with overexpression of miR-100 decreased, while the inhibition of miR-100 expression increased the migration and invasion of HCC cells. Conclusions The expression of miR-100 is low in human HCC tissues and cells. miR-100 inhibits the invasion and migration of HCC cells and plays an important role in the occurrence and development of HCC.
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Objective To evaluate the expression and relationship of miR-100 and FZD-8, one of the major compo?nents of Wnt signaling pathway, and the correlation of their expressions with lymph node metastasis in patients with breast cancer. Methods The expression of miR-100 was determined in 50 samples of human breast cancer tissues and adjacent normal tissues by in situ hybridization. The correlation of miR-100 expression with lymph node metastasis was analyzed by Mann-Whitney U test. The expression of FZD-8 was measured in 50 samples of human breast cancer tissues and adjacent normal tissues by immunohistochemistry. The correlation of the miR-100 expression with the protein expression of FZD-8 was evaluated by Pearson rank analysis. Results The expression of miR-100 was significantly lower in human breast can?cer tissues than that in adjacent normal breast tissues [2.00 (1.00, 3.00) vs. 6.00 (3.50, 8.00)]. The miR-100 expression was lower in patients with lymph node metastasis than that in patients without lymph node metastasis [1.50 (1.00, 2.75) vs. 3.00 (2.00, 4.00)]. The expression of FZD-8 was significantly higher in human breast cancer tissues than that in adjacent normal breast tissues [8.00 (6.00, 9.00) vs. 6.00 (3.75, 9.00)]. The miR-100 expression was negatively correlated with the FZD-8 pro?tein expression in human breast cancer tissues (rs=-0.592, P<0.001). Conclusion The miR-100, as an anti-metastasis-miRNA, may involve in the metastasis of breast cancer, which may be related with the regulation of the expression of FZD-8.
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Objective To compare the expression of serum miR-100 in patients with esophageal cancer and healthy person ,and explore the value of miR-100 in diagnosis for esophageal cancer .Methods Real-time fluorescent quantitative polymerase chain reac-tion was used to detecting miR-100 in 40 esophageal cancer patients(study group) and 50 healthy person(control group) .Results The expression of miR-100 in the study group and control group were 6 .399 ± 3 .541 ,2 .625 ± 1 .515 respective ,the expression in the study group was significant higher than that of the control group(t= 9 .07 ,P< 0 .05) .The under area of receiver operating char-acteristic curve of miR-100 in diagnosis for esophageal cancer was 0 .832(95% confidence interval was 0 .731 - 0 .934) ,when the Cut off value was 5 .285 ,the sensitivity and specificity of miR-100 in diagnosis for esophageal cancer were 65% and 95% . Conclusion Serum miR-100 in esophageal cancer patients is higher than that in healthy person ,which might be a new molecular markers in diagnosis for esophageal caner .
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Purpose To investigate the expression and clinical significance of miR-100 in hepatocellular carcinoma ( HCC) . Methods LNA-modified miR-100 fluorescent probe was used to detect the formalin-fixed and paraffin-embedded tissues of 29 cases of HCC, while 10 cases of normal human liver tissues were used as the control group. Results Analysis of fluorescence in situ hybridization ( FISH) showed that, in all normal tissues miR-100 expression were positive, fluorescence signal located in the cytoplasm, while only 11 cases of HCC were positive, and there was a significant difference between both positive rates (100% vs 37. 9%, P<0. 01). In addition, with the degree of differentiation of HCC decreased, the expression of miR-100 showed a decreasing trend, positive rate of the well differentiation group and moderate differentiation group was significantly higher than the poor differentiation group ( P<0. 05 ) . Conclusion Detection of miR-100 expression in HCC tissue might be helpful to evaluate the pathologic grade of the tumors.
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Purpose To explore the effect of miR-100 in rat liver development and the occurrence of liver cancer. Methods The liv-er tissues of neonate SD rats, adult SD rats and 2-AAF/PH rats were collected, then real-time fluorescence quantitative polymerase chain reaction ( RT-PCR) and FISH methods were used to detect the expression of miR-100 in the liver tissues. Results The expres-sion level of miR-100 in adult SD rats liver tissues was significantly higher than that in neonate SD rats liver tissues (P<0. 05). Com-pared with the adult rats, the expression level of miR-100 in 2-AAF/PH rats liver tissues was obviously decline (P<0. 05). Conclu-sion miR-100 can as a maker of liver mature, and its deletion maybe related to the tumor formation.
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Objective: To investigate the expression of microRNA-100 (miR-100) in the serum of gastric cancer patients and its clinical significance. Methods: At The First Affiliated Hospital of Bengbu Medical College, 40 gastric cancer patients who underwent surgery with complete follow-up data and 40 healthy controls were selected as research subjects. Total miRNA was isolated from the se-rum samples of the cancer patients. A stable and sensitive detection method for the absolute quantification of miR-100 was established. The serum levels of miR-100 in the patients and healthy controls were tested according to this novel method. Differences of the miR-100 expression in the serum samples of the patients and healthy controls were analyzed using statistical analysis. The correlation between miR-100 expression levels and the clinicopathological features of gastric cancer was also analyzed. Results: The expression level of miR-100 in the serum was significantly higher in cancer patients[(2.78±1.92) fmol/L]than in the healthy controls[(0.19± 0.15) fmol/L, P0.05). Conclusion: Serum miR-100 testing may be helpful in the diag-nosis of gastric cancer.
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OBJECTIVE: MicroRNAs are noncoding RNA molecules involved in the development and progression of tumors. We have found that miRNA-100 is underexpressed in metastatic prostate cancer compared to localized disease. Conversely higher levels of miR-100 are related to biochemical recurrence after surgery. This suggests that miR-100 may be a context-dependent miRNA, acting as oncogene or tumor suppressor miRNA. Our aim is to demonstrate the role of miR-100 in the control of predicted target genes in prostate cancer cell lines. METHODS: Cell lines DU145 and PC3 were transfected with miR-100, antimiR-100 and after 24 h and 48 h of exposure, qRT-PCR and western blot were performed for mTOR, FGFR3, THAP2, SMARCA5 and BAZ2A. RESULTS: There was reduction in mTOR (p = 0.025), THAP2 (p = 0.038), SMARCA5 (p = 0.001) and BAZ2A (p = 0.006) mRNA expression in DU145 cells after exposure to miR-100. In PC3 cells, mTOR expression was decreased by miR-100 (p = 0.01). There was a reduction in the expression levels of proteins encoded by studied genes, ranging from 34% to 69%. CONCLUSIONS: We demonstrate that miR-100 is a context-dependent miRNA controlling BAZ2, mTOR, FGFR3, SMARCA5 and THAP2 that might be involved in PC progression. The elucidation of the roles of miRNAs in tumors is important because they can be used as therapeutic targets in the future. .