miR186 functions as a tumor suppressor in osteosarcoma cells by suppressing the malignant phenotype and aerobic glycolysis.
Oncol Rep
; 39(6): 2703-2710, 2018 Jun.
Article
em En
| MEDLINE
| ID: mdl-29693191
ABSTRACT
Osteosarcoma (OS) is the most common primary bone malignancy among children and adolescents. Deregulation of microRNAs has been well documented in OS, while the putative effects of miR186 have not been identified yet. In the present study, we assessed the expression of miR186 in a cohort of 40 OS tissues and explored its effects on OS cells. As expected, miR186 was suppressed in OS tissues compared with relative normal tissues. Overexpression of miR186 inhibited cell proliferation, arrested the cell cycle progression and suppressed the cell invasion of the HOS and U2 OS cell lines. These results indicated the tumorsuppressive role of miR186 in OS. Among the target genes of miR186, we found that pituitary tumor transforming gene 1 (PTTG1) may be a target gene of miR186 in OS and that the overexpression of PTTG1 could partially abolish miR186mediated suppressive effects on OS cells. Aerobic glycolysis is the major way of energy supply and is one of the characteristic phenotypes of tumor cells. In addition, we found that overexpression of miR186 significantly suppressed the expression of hypoxiainducible factor 1 (HIF1) and inhibited the glucose uptake and lactate production of OS cells. Collectively, our findings demonstrated that miR186 functions as a tumor suppressor in OS cells partially by targeting PTTG1 and that HIF1mediated suppression of aerobic glycolysis may be also involved in its suppressive effects.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Neoplasias Ósseas
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Osteossarcoma
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Regulação para Baixo
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MicroRNAs
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Subunidade alfa do Fator 1 Induzível por Hipóxia
/
Securina
Tipo de estudo:
Prognostic_studies
Limite:
Adolescent
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Adult
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Humans
Idioma:
En
Revista:
Oncol Rep
Assunto da revista:
NEOPLASIAS
Ano de publicação:
2018
Tipo de documento:
Article