We are analyzing https://link.springer.com/article/10.1007/s10456-015-9474-5.

Title:
Tumor-derived microRNA-494 promotes angiogenesis in non-small cell lung cancer | Angiogenesis
Description:
Angiogenesis, a crucial step in tumor growth and metastasis, is regulated by various pro- or anti-angiogenic factors. Recently, microRNAs have been shown to modulate angiogenic processes by modulating the expression of critical angiogenic factors. However, roles of tumor-derived microRNAs in regulating tumor vascularization remain to be elucidated. In this study, we found that delivery of miR-494 into human vascular endothelial cells (ECs) enhanced the EC migration and promoted angiogenesis. The angiogenic effect of miR-494 was mediated by the targeting of PTEN and the subsequent activation of Akt/eNOS pathway. Importantly, co-culture experiments demonstrated that a lung cancer cell line, A549, secreted and delivered miR-494 into ECs via a microvesicle-mediated route. In addition, we found that the expression of miR-494 was induced in the tumor cells in response to hypoxia, likely via a HIF-1α-mediated mechanism. Furthermore, a specific miR-494 antagomiR effectively inhibited angiogenesis and attenuated the growth of tumor xenografts in nude mice. Taken together, these results demonstrated that miR-494 is a novel tumor-derived paracrine signal to promote angiogenesis and tumor growth under hypoxic condition.
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Keywords {🔍}

pubmed, article, google, scholar, cas, cancer, angiogenesis, wang, central, cell, liu, microrna, cells, tumor, chen, lung, endothelial, res, expression, zhang, fang, access, angiogenic, targeting, microvesicles, privacy, cookies, content, tumorderived, nonsmall, growth, human, doican, publish, research, search, promotes, mao, nanping, micrornas, vascular, pten, induced, hypoxia, open, sci, stem, science, china, data,

Topics {✒️}

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Schema {🗺️}

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         headline:Tumor-derived microRNA-494 promotes angiogenesis in non-small cell lung cancer
         description:Angiogenesis, a crucial step in tumor growth and metastasis, is regulated by various pro- or anti-angiogenic factors. Recently, microRNAs have been shown to modulate angiogenic processes by modulating the expression of critical angiogenic factors. However, roles of tumor-derived microRNAs in regulating tumor vascularization remain to be elucidated. In this study, we found that delivery of miR-494 into human vascular endothelial cells (ECs) enhanced the EC migration and promoted angiogenesis. The angiogenic effect of miR-494 was mediated by the targeting of PTEN and the subsequent activation of Akt/eNOS pathway. Importantly, co-culture experiments demonstrated that a lung cancer cell line, A549, secreted and delivered miR-494 into ECs via a microvesicle-mediated route. In addition, we found that the expression of miR-494 was induced in the tumor cells in response to hypoxia, likely via a HIF-1α-mediated mechanism. Furthermore, a specific miR-494 antagomiR effectively inhibited angiogenesis and attenuated the growth of tumor xenografts in nude mice. Taken together, these results demonstrated that miR-494 is a novel tumor-derived paracrine signal to promote angiogenesis and tumor growth under hypoxic condition.
         datePublished:2015-06-04T00:00:00Z
         dateModified:2015-06-04T00:00:00Z
         pageStart:373
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            Cancer Research
            Biomedicine
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            Ophthalmology
            Oncology
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      headline:Tumor-derived microRNA-494 promotes angiogenesis in non-small cell lung cancer
      description:Angiogenesis, a crucial step in tumor growth and metastasis, is regulated by various pro- or anti-angiogenic factors. Recently, microRNAs have been shown to modulate angiogenic processes by modulating the expression of critical angiogenic factors. However, roles of tumor-derived microRNAs in regulating tumor vascularization remain to be elucidated. In this study, we found that delivery of miR-494 into human vascular endothelial cells (ECs) enhanced the EC migration and promoted angiogenesis. The angiogenic effect of miR-494 was mediated by the targeting of PTEN and the subsequent activation of Akt/eNOS pathway. Importantly, co-culture experiments demonstrated that a lung cancer cell line, A549, secreted and delivered miR-494 into ECs via a microvesicle-mediated route. In addition, we found that the expression of miR-494 was induced in the tumor cells in response to hypoxia, likely via a HIF-1α-mediated mechanism. Furthermore, a specific miR-494 antagomiR effectively inhibited angiogenesis and attenuated the growth of tumor xenografts in nude mice. Taken together, these results demonstrated that miR-494 is a novel tumor-derived paracrine signal to promote angiogenesis and tumor growth under hypoxic condition.
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         Cancer Research
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         Cardiology
         Ophthalmology
         Oncology
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