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Hypoxia-inducible MiR-210 is an independent prognostic factor and contributes to metastasis in colorectal cancer.

ABSTRACT: MicroRNA-210 (miR-210), the master hypoxamir, plays pleiotropic roles in certain cancers; however, its role in the development of human colorectal cancer remains unclear. Herein, we report that miR-210 is frequently up-regulated in colorectal cancer tissues, with high miR-210 expression significantly correlating with large tumor size, lymph node metastasis, advanced clinical stage and poor prognosis. Functionally, miR-210 overexpression promotes the migration and invasion of colorectal cancer cells. Furthermore, miR-210 can be induced by hypoxia and mediates the hypoxia-induced metastasis of colorectal cancer cells. In addition, vacuole membrane protein 1 (VMP1) is identified as the direct and functional target of miR-210. Thus, miR-210 is a useful biomarker for hypoxic tumor cells and a prognostic factor that plays an essential role in colorectal cancer metastasis.

SUBMITTER: Qu A

PROVIDER: S-EPMC3954583 | biostudies-literature | 2014

REPOSITORIES: biostudies-literature

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Hypoxia-inducible MiR-210 is an independent prognostic factor and contributes to metastasis in colorectal cancer.

Qu Ailin A Du Lutao L Yang Yongmei Y Liu Hui H Li Juan J Wang Lili L Liu Yimin Y Dong Zhaogang Z Zhang Xin X Jiang Xiumei X Wang Haiyan H Li Zewu Z Zheng Guixi G Wang Chuanxin C

PloS one 20140314 3

MicroRNA-210 (miR-210), the master hypoxamir, plays pleiotropic roles in certain cancers; however, its role in the development of human colorectal cancer remains unclear. Herein, we report that miR-210 is frequently up-regulated in colorectal cancer tissues, with high miR-210 expression significantly correlating with large tumor size, lymph node metastasis, advanced clinical stage and poor prognosis. Functionally, miR-210 overexpression promotes the migration and invasion of colorectal cancer ce ...[more]

PMID: 24632577

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Project description:Accumulation of hypoxia inducible factor-1? (HIF-1?) is commonly an acute and beneficial response to hypoxia, whereas chronically elevated HIF-1? is associated with multiple disease conditions, including preeclampsia, a serious hypertensive disease of pregnancy. However, the molecular basis underlying the persistent elevation of placental HIF-1? in preeclampsia and its role in the pathogenesis of preeclampsia are poorly understood. Here we report that Hif-1? mRNA and HIF-1? protein were elevated in the placentas of pregnant mice infused with angiotensin II type I receptor agonistic autoantibody, a pathogenic factor in preeclampsia. Knockdown of placental Hif-1? mRNA by specific siRNA significantly attenuated hallmark features of preeclampsia induced by angiotensin II type I receptor agonistic autoantibody in pregnant mice, including hypertension, proteinuria, kidney damage, impaired placental vasculature, and elevated maternal circulating soluble fms-like tyrosine kinase-1 levels. Next, we discovered that Hif-1? mRNA levels and HIF-1? protein levels were induced in an independent preeclampsia model with infusion of the inflammatory cytokine tumor necrosis factor superfamily member 14 (LIGHT). SiRNA knockdown experiments also demonstrated that elevated HIF-1? contributed to LIGHT-induced preeclampsia features. Translational studies with human placentas showed that angiotensin II type I receptor agonistic autoantibody or LIGHT is capable of inducing HIF-1? in a hypoxia-independent manner. Moreover, increased HIF-1? was found to be responsible for angiotensin II type I receptor agonistic autoantibody or LIGHT-induced elevation of Flt-1 gene expression and production of soluble fms-like tyrosine kinase-1 in human villous explants. Overall, we demonstrated that hypoxia-independent stimulation of HIF-1? gene expression in the placenta is a common pathogenic mechanism promoting disease progression. Our findings reveal new insight to preeclampsia and highlight novel therapeutic possibilities for the disease.

Dataset Information

Hypoxia-inducible MiR-210 is an independent prognostic factor and contributes to metastasis in colorectal cancer.

Publications

Hypoxia-inducible MiR-210 is an independent prognostic factor and contributes to metastasis in colorectal cancer.

Similar Datasets

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