Long noncoding RNA UCA1 promotes tumour metastasis by inducing GRK2 degradation in gastric cancer

Increasing evidence demonstrates that long noncoding RNAs (lncRNAs) regulate gene and protein expression by exerting an influence on transcriptional and post-transcriptional processes. Here, we report that the lncRNA UCA1 increases the metastatic ability of gastric cancer (GC) cells by regulating GR...

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Veröffentlicht in:Cancer letters 2017-11, Vol.408, p.10-21
Hauptverfasser: Wang, Zhen-qiang, He, Chang-yu, Hu, Lei, Shi, Hong-peng, Li, Jian-fang, Gu, Qin-long, Su, Li-ping, Liu, Bing-ya, Li, Chen, Zhu, Zhenggang
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container_issue
container_start_page 10
container_title Cancer letters
container_volume 408
creator Wang, Zhen-qiang
He, Chang-yu
Hu, Lei
Shi, Hong-peng
Li, Jian-fang
Gu, Qin-long
Su, Li-ping
Liu, Bing-ya
Li, Chen
Zhu, Zhenggang
description Increasing evidence demonstrates that long noncoding RNAs (lncRNAs) regulate gene and protein expression by exerting an influence on transcriptional and post-transcriptional processes. Here, we report that the lncRNA UCA1 increases the metastatic ability of gastric cancer (GC) cells by regulating GRK2 protein stability by promoting Cbl-c-mediated GRK2 ubiquitination and degradation. This process then activates the ERK-MMP9 signalling pathway. Furthermore, we demonstrate that GRK2 is downregulated in GC cells and that silencing of GRK2 might cause similar phenotypic changes and signalling pathway activation as those induced by elevated UCA1 in GC cells. Our results suggest that UCA1 might function as a mediator of protein ubiquitination and may be a promising molecular target for GC therapy. •LncRNA UCA1 promotes the migration and invasiveness of GC cells in vitro and tumour metastasis in vivo.•LncRNA UCA1 increases GC migration and invasion via the activation of the ERK-MMP9 signalling pathway.•LncRNA UCA1 interacts with GRK2 and promotes GRK2 degradation via ubiquitination.•LncRNA UCA1 enhances Cbl-c-mediated ubiquitination.•LncRNA UCA1 regulates ERK-MMP9 signalling via downregulating GRK2.
doi_str_mv 10.1016/j.canlet.2017.08.013
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Here, we report that the lncRNA UCA1 increases the metastatic ability of gastric cancer (GC) cells by regulating GRK2 protein stability by promoting Cbl-c-mediated GRK2 ubiquitination and degradation. This process then activates the ERK-MMP9 signalling pathway. Furthermore, we demonstrate that GRK2 is downregulated in GC cells and that silencing of GRK2 might cause similar phenotypic changes and signalling pathway activation as those induced by elevated UCA1 in GC cells. Our results suggest that UCA1 might function as a mediator of protein ubiquitination and may be a promising molecular target for GC therapy. •LncRNA UCA1 promotes the migration and invasiveness of GC cells in vitro and tumour metastasis in vivo.•LncRNA UCA1 increases GC migration and invasion via the activation of the ERK-MMP9 signalling pathway.•LncRNA UCA1 interacts with GRK2 and promotes GRK2 degradation via ubiquitination.•LncRNA UCA1 enhances Cbl-c-mediated ubiquitination.•LncRNA UCA1 regulates ERK-MMP9 signalling via downregulating GRK2.</description><identifier>ISSN: 0304-3835</identifier><identifier>EISSN: 1872-7980</identifier><identifier>DOI: 10.1016/j.canlet.2017.08.013</identifier><identifier>PMID: 28843497</identifier><language>eng</language><publisher>Ireland: Elsevier B.V</publisher><subject>Animals ; Apoptosis ; b-Adrenergic-receptor kinase ; Cbl protein ; Cell Movement ; Cell Proliferation ; Ethics ; Experiments ; G-Protein-Coupled Receptor Kinase 2 - genetics ; G-Protein-Coupled Receptor Kinase 2 - metabolism ; Gastric cancer ; Gelatinase B ; Gene Expression Regulation, Neoplastic ; Humans ; Kinases ; lncRNA ; Lung Neoplasms - genetics ; Lung Neoplasms - metabolism ; Lung Neoplasms - secondary ; Male ; Matrix Metalloproteinase 9 - genetics ; Matrix Metalloproteinase 9 - metabolism ; Metastases ; Metastasis ; Mice ; Mice, Inbred BALB C ; Mice, Nude ; Mitogen-Activated Protein Kinase 1 - genetics ; Mitogen-Activated Protein Kinase 1 - metabolism ; Mitogen-Activated Protein Kinase 3 - genetics ; Mitogen-Activated Protein Kinase 3 - metabolism ; Mortality ; Post-transcription ; Proteins ; Proteolysis ; Ribonucleic acid ; RNA ; RNA, Long Noncoding - genetics ; Rodents ; Signal Transduction ; Stomach Neoplasms - genetics ; Stomach Neoplasms - metabolism ; Stomach Neoplasms - pathology ; Transcription ; Tumor Cells, Cultured ; Tumors ; Ubiquitination ; UCA1 ; Wound healing ; Xenograft Model Antitumor Assays</subject><ispartof>Cancer letters, 2017-11, Vol.408, p.10-21</ispartof><rights>2017 Elsevier B.V.</rights><rights>Copyright © 2017 Elsevier B.V. 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Our results suggest that UCA1 might function as a mediator of protein ubiquitination and may be a promising molecular target for GC therapy. •LncRNA UCA1 promotes the migration and invasiveness of GC cells in vitro and tumour metastasis in vivo.•LncRNA UCA1 increases GC migration and invasion via the activation of the ERK-MMP9 signalling pathway.•LncRNA UCA1 interacts with GRK2 and promotes GRK2 degradation via ubiquitination.•LncRNA UCA1 enhances Cbl-c-mediated ubiquitination.•LncRNA UCA1 regulates ERK-MMP9 signalling via downregulating GRK2.</abstract><cop>Ireland</cop><pub>Elsevier B.V</pub><pmid>28843497</pmid><doi>10.1016/j.canlet.2017.08.013</doi><tpages>12</tpages><orcidid>https://orcid.org/0000-0002-4406-3762</orcidid></addata></record>
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subjects Animals
Apoptosis
b-Adrenergic-receptor kinase
Cbl protein
Cell Movement
Cell Proliferation
Ethics
Experiments
G-Protein-Coupled Receptor Kinase 2 - genetics
G-Protein-Coupled Receptor Kinase 2 - metabolism
Gastric cancer
Gelatinase B
Gene Expression Regulation, Neoplastic
Humans
Kinases
lncRNA
Lung Neoplasms - genetics
Lung Neoplasms - metabolism
Lung Neoplasms - secondary
Male
Matrix Metalloproteinase 9 - genetics
Matrix Metalloproteinase 9 - metabolism
Metastases
Metastasis
Mice
Mice, Inbred BALB C
Mice, Nude
Mitogen-Activated Protein Kinase 1 - genetics
Mitogen-Activated Protein Kinase 1 - metabolism
Mitogen-Activated Protein Kinase 3 - genetics
Mitogen-Activated Protein Kinase 3 - metabolism
Mortality
Post-transcription
Proteins
Proteolysis
Ribonucleic acid
RNA
RNA, Long Noncoding - genetics
Rodents
Signal Transduction
Stomach Neoplasms - genetics
Stomach Neoplasms - metabolism
Stomach Neoplasms - pathology
Transcription
Tumor Cells, Cultured
Tumors
Ubiquitination
UCA1
Wound healing
Xenograft Model Antitumor Assays
title Long noncoding RNA UCA1 promotes tumour metastasis by inducing GRK2 degradation in gastric cancer
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