Abstract
Malignant gliomas are a heterogeneous group of brain tumors with a poor prognosis, which is largely due to its aggressive invasiveness and angiogenesis. In recent years, it has been found that multiple long noncoding RNAs (lncRNAs) participate in a wide range of biological functions including angiogenesis through the regulation of gene expression in cancers. In this study, we investigate and report the novel role of lncRNA SLC26A4-AS1 in gliomas, with a novel mechanism involving transcription factors NFKB1 and NPTX1. We determined that SLC26A4-AS1 was downregulated in human glioma tissues and cells. Furthermore, overexpression of SLC26A4-AS1 or NPTX1 restrained the aggressiveness of glioma cells and their pro-angiogenic ability. SLC26A4-AS1 was also found to upregulate NPTX1 by recruiting NFKB1 into the NPTX1 promoter. Moreover, silencing of either NPTX1 or NFKB1 restored the aggressive and pro-angiogenic properties of glioma cells in the presence of SLC26A4-AS1. Taken together, we demonstrate that SLC26A4-AS1 promotes NPTX1 transcriptional activity by recruiting NFKB1 and thus exerting antiangiogenic effects on glioma cells. This study provides an experimental basis for the intervention of SLC26A4-AS1 in the treatment of gliomas.
Keywords:
NFKB1; NPTX1; SLC26A4-AS1; glioma; lncRNA.
© 2020 Federation of European Biochemical Societies.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Animals
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Brain Neoplasms / blood supply
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Brain Neoplasms / genetics*
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Brain Neoplasms / metabolism
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Brain Neoplasms / pathology
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C-Reactive Protein / antagonists & inhibitors
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C-Reactive Protein / genetics*
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C-Reactive Protein / metabolism
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Case-Control Studies
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Cell Line, Tumor
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Cell Movement
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Cell Proliferation
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Gene Expression Regulation, Neoplastic
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Glioblastoma / blood supply
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Glioblastoma / genetics*
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Glioblastoma / metabolism
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Glioblastoma / pathology
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Humans
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Mice
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Mice, Inbred BALB C
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Mice, Nude
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NF-kappa B p50 Subunit / antagonists & inhibitors
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NF-kappa B p50 Subunit / genetics*
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NF-kappa B p50 Subunit / metabolism
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Neoplasm Grading
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Neovascularization, Pathologic / genetics*
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Neovascularization, Pathologic / metabolism
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Neovascularization, Pathologic / pathology
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Nerve Tissue Proteins / antagonists & inhibitors
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Nerve Tissue Proteins / genetics*
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Nerve Tissue Proteins / metabolism
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Neuroglia / metabolism
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Neuroglia / pathology
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Promoter Regions, Genetic
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RNA, Long Noncoding / agonists
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RNA, Long Noncoding / genetics*
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RNA, Long Noncoding / metabolism
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RNA, Small Interfering / genetics
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RNA, Small Interfering / metabolism
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Signal Transduction
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Sulfate Transporters / genetics*
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Sulfate Transporters / metabolism
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Tumor Burden
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Xenograft Model Antitumor Assays
Substances
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NF-kappa B p50 Subunit
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NFKB1 protein, human
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Nerve Tissue Proteins
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RNA, Long Noncoding
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RNA, Small Interfering
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SLC26A4 protein, human
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Sulfate Transporters
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neuronal pentraxin
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C-Reactive Protein