Expression of micro-RNAs and genes related to angiogenesis in ccRCC and associations with tumor characteristics.
BMC Urol
; 17(1): 113, 2017 Dec 04.
Article
em En
| MEDLINE
| ID: mdl-29202733
ABSTRACT
BACKGROUND:
Clear cell renal cell carcinoma (ccRCC) is the third most common urological cancer in adults. Our aim is to evaluate genes and miRNAs expression profiles involved with angiogenesis and tumor characteristics in ccRCC.METHODS:
The expression levels of miRNAs miR-99a, 99b, 100; 199a; 106a; 106b; 29a; 29b; 29c; 126; 200a, 200b and their respective target genes mTOR, HIF1-α, VHL, PDGF, VEGF, VEGFR1 and VEGFR2 were analyzed using qRT-PCR in tumor tissue samples from 56 patients with ccRCC. Five samples of benign renal tissue were utilized as control. The expression levels of miRNAs and genes were related to tumor size, Fuhrman nuclear grade and microvascular invasion.RESULTS:
miR99a was overexpressed in most samples and its target gene mTOR was underexpressed, this also occurs for miRNAs 106a, 106b, and their target gene VHL. An increase in miR-200b was correlated with high-risk tumors (p = 0.01) while miR-126 overexpression was associated with Fuhrman's low grade (p = 0.03).CONCLUSIONS:
Our results show that in ccRCC there are changes in miRNAs expression affecting gene expression that could be important in determining the aggressiveness of this lethal neoplasia.Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Carcinoma de Células Renais
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Regulação Neoplásica da Expressão Gênica
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MicroRNAs
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Neoplasias Renais
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Neovascularização Patológica
Tipo de estudo:
Risk_factors_studies
Limite:
Female
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Humans
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Male
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Middle aged
Idioma:
En
Revista:
BMC Urol
Assunto da revista:
UROLOGIA
Ano de publicação:
2017
Tipo de documento:
Article
País de afiliação:
Brasil