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1.
Sci Rep ; 9(1): 9820, 2019 Jul 08.
Artigo em Inglês | MEDLINE | ID: mdl-31285444

RESUMO

MicroRNA-212-3p inhibits several human cancers but its effects on hepatocellular carcinoma (HCC) remain unclear. In this study, we show that miR-212-3p is down-regulated in HCC cell lines and tissues, and correlates with vascular invasion (p = 0.001), and the absence of capsule formation (p = 0.009). We found that miR-212-3p influenced the epithelial to mesenchymal transition (EMT) of HCCLM3 and Huh7 cells. Mechanistically, miR-212-3p repressed cell invasion through the suppression of connective tissue growth factor (CTGF). We therefore validate the anti-HCC effects of miR-212-3p through its ability to suppress CTGF and subsequent EMT.

2.
Biopreserv Biobank ; 17(5): 425-432, 2019 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-31025876

RESUMO

Background: High-throughput transcript sequencing plays an important role in the study of hepatocellular carcinoma (HCC) occurrence and development. High-quality biospecimens, especially high-quality RNA, are the most basic prerequisites for obtaining good transcript sequencing data. Our purpose was to explore the treatment conditions of in vitro ischemic tissue samples that can be used to obtain high-integrity RNA before freezing the samples in liquid nitrogen. Materials and Methods: Postoperative tumor tissues (T) and adjacent normal tissues (AN) from 50 HCC patients were randomly selected from May 5, 2017, to June 15, 2017. Postoperative tissue specimens from each HCC patient were stratified by tissue type (T or AN), ischemia time (minutes), and ischemia temperature (°C) into 16 groups: T-4°C-15 minutes, T-4°C-30 minutes, T-4°C-60 minutes, T-4°C-120 minutes, T-24°C-15 minutes, T-24°C-30 minutes, T-24°C-60 minutes, T-24°C-120 minutes, AN-4°C-15 minutes, AN-4°C-30 minutes, AN-4°C-60 minutes, AN-4°C-120 minutes, AN-24°C-15 minutes, AN-24°C-30 minutes, AN-24°C-60 minutes, and AN-24°C-120 minutes. RNA integrity was detected by RNA integrity number (RIN) and 1% agarose gel electrophoresis. Results: At an ischemia temperature of 4°C and ischemia time of >30 minutes, the RIN of T began to decrease. RIN also gradually decreased in T at an ischemia temperature of 4°C and in both T and AN at an ischemia temperature of 24°C for ischemia times 15, 30, 60, and 120 minutes. For an ischemia time ≤15 minutes and ischemia temperature 4°C or 24°C, the RINs of T and AN were significantly different. Furthermore, at ischemia temperature 4°C and ischemia time 30 and 60 minutes or ischemia temperature 24°C and ischemia time 30 minutes, the RIN of T was higher compared with AN. However, there was no significant difference in RIN between T and AN under other treatment conditions. Conclusions: Tissue quality is adversely affected by ischemia time and ischemia temperature. Therefore, temporary ischemia time (≤15 minutes) before snap freezing is key for maintaining high-integrity RNA in HCC tissues.


Assuntos
Carcinoma Hepatocelular/patologia , Neoplasias Hepáticas/patologia , RNA Mensageiro/química , Bancos de Tecidos/normas , Carcinoma Hepatocelular/genética , Criopreservação , Humanos , Isquemia , Neoplasias Hepáticas/genética , Estabilidade de RNA , Distribuição Aleatória , Manejo de Espécimes , Temperatura , Fatores de Tempo
3.
Oncol Lett ; 17(2): 2317-2327, 2019 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-30675297

RESUMO

MicroRNAs (miRNAs) serve an important regulatory role in carcinogenesis and cancer progression. Aberrant expression of miR-197-3p has been reported in various human malignancies. However, the role of miR-197-3p in the progression and prognosis of hepatocellular carcinoma (HCC) remains unknown. The present study demonstrated that miR-197-3p was downregulated in HCC tissues and that the low level of miR-197-3p expression in HCC tumours correlated with aggressive clinicopathological characteristics; thus, miR-197-3p may serve as a predictor for poor prognosis in patients with HCC. Additionally, miR-197-3p markedly inhibited the metastasis of HCC cells in vitro and in vivo. Bioinformatics analysis further identified zinc finger protein interacted with K protein 1 (ZIK1) as a novel target of miR-197-3p in HCC cells. These findings suggest that miR-197-3p may regulate the survival of HCC cells, partially through the downregulation of ZIK1. Therefore, the miR-197-3p/ZIK1 axis may serve as a novel therapeutic target in patients with HCC.

4.
Sci Rep ; 8(1): 10461, 2018 Jul 11.
Artigo em Inglês | MEDLINE | ID: mdl-29992971

RESUMO

Recent studies have shown that miR-494-3p is oncogene and has a central role in many solid tumors; however, the role of miR-494-3p in the progression and prognosis of hepatocellular carcinoma (HCC) remains unknown. In this study, it was found that miR-494-3p was up-regulated in HCC tissues. The high level of miR-494-3p in HCC tumors was correlated with aggressive clinicopathological characteristics and predicted poor prognosis in HCC patients. Functional study demonstrated that miR-494-3p significantly promoted HCC cell metastasis in vitro and vivo. Since phosphoinositide 3-kinase/protein kinase-B (PI3K/AKT) signaling is a basic oncogenic driver in HCC, a potential role of miR-494-3p was explored as well as its target genes in PI3K/AKT activation. Of all the predicted target genes of miR-494-3p, the tumor-suppressor phosphatase and tensin homolog (PTEN) were identified. In conclusion, the data we collected could define an original mechanism of PI3K/AKT hyperactivation and sketch the regulatory role of miR-494-3p in suppressing the expression of PTEN. Therefore, targeting miR-494-3p could provide an effective therapeutic method for the treatment of the disease.


Assuntos
Carcinoma Hepatocelular/patologia , Neoplasias Hepáticas/patologia , MicroRNAs/fisiologia , PTEN Fosfo-Hidrolase/antagonistas & inibidores , Biomarcadores Tumorais , Carcinoma Hepatocelular/diagnóstico , Carcinoma Hepatocelular/tratamento farmacológico , Carcinoma Hepatocelular/mortalidade , Progressão da Doença , Feminino , Regulação Neoplásica da Expressão Gênica , Humanos , Masculino , MicroRNAs/análise , Pessoa de Meia-Idade , Metástase Neoplásica , Fosfatidilinositol 3-Quinases/metabolismo , Prognóstico , Proteínas Proto-Oncogênicas c-akt/metabolismo , Análise de Sobrevida
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