Novel long noncoding RNA GACAT3 promotes colorectal cancer cell proliferation, invasion, and migration through miR-149
Weiwei Zhou,1 Lei Wang,2 Yu Miao,1 Rongge Xing1 1Department of Pathology, Central Hospital of Cangzhou, Hebei, 2Department of Pharmacy, Cangzhou Medical College, Hebei, China Aim: To explore the expression and clinical significance of long noncoding RNA (lncRNA) gastric cancer-associated transcrip...
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doaj-fc0790d56e724d67ade79e2e36684c862020-11-25T00:19:33ZengDove Medical PressOncoTargets and Therapy1178-69302018-03-01Volume 111543155237317Novel long noncoding RNA GACAT3 promotes colorectal cancer cell proliferation, invasion, and migration through miR-149Zhou WWang LMiao YXing RWeiwei Zhou,1 Lei Wang,2 Yu Miao,1 Rongge Xing1 1Department of Pathology, Central Hospital of Cangzhou, Hebei, 2Department of Pharmacy, Cangzhou Medical College, Hebei, China Aim: To explore the expression and clinical significance of long noncoding RNA (lncRNA) gastric cancer-associated transcript 3 (GACAT3) in human colorectal cancer (CRC).Methods: Expression of GACAT3 in CRC tissues and cell lines was measured using quantitative real-time PCR. CCK-8 and colony formation assays were used to assess the effect of GACAT3 on CRC cell line proliferation. Transwell invasion and migration assays were performed to detect the effect of GACAT3 on CRC cell line invasion and migration. Bioinformatics prediction, luciferase reporter assay, and pull-down assay were used to determine if miR-149 was a target of GACAT3. In addition, we also conducted colony formation assays and invasion assays to verify that GACAT3 promotes tumor progression through miR-149. Finally, in vivo tumorigenesis studies were used to demonstrate subcutaneous tumor growth.Results: In the present study, we found that GACAT3 was highly expressed in CRC tissues and cell lines. Si-GACAT3 significantly decreased cell proliferation, motility, and invasiveness both in vitro and in vivo. We confirmed that downregulated GACAT3 significantly increased the expression of miR-149, and miR-149 binds to GACAT3 in a sequence-specific manner using luciferase reporter assays and pull-down assay. Further functional experiments indicated that GACAT3 could directly upregulate SP1 and STAT3 expressions by functioning as a competing endogenous RNA for miR-149, and consequentially, promoting CRC cell proliferation and invasion in vitro.Conclusion: This study demonstrated that GACAT3 promotes tumor progression through competitive binding to miR-149 and suggests a promising new strategy for anti-CRC therapy. Keywords: GACAT3, miR-149, colorectal cancer, growth, metastasis, SP1, STAT3https://www.dovepress.com/novel-long-noncoding-rna-gacat3-promotes-colorectal-cancer-cell-prolif-peer-reviewed-article-OTTGACAT3MiR-149Colorectal CancerGrowthMetastasis |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Zhou W Wang L Miao Y Xing R |
spellingShingle |
Zhou W Wang L Miao Y Xing R Novel long noncoding RNA GACAT3 promotes colorectal cancer cell proliferation, invasion, and migration through miR-149 OncoTargets and Therapy GACAT3 MiR-149 Colorectal Cancer Growth Metastasis |
author_facet |
Zhou W Wang L Miao Y Xing R |
author_sort |
Zhou W |
title |
Novel long noncoding RNA GACAT3 promotes colorectal cancer cell proliferation, invasion, and migration through miR-149 |
title_short |
Novel long noncoding RNA GACAT3 promotes colorectal cancer cell proliferation, invasion, and migration through miR-149 |
title_full |
Novel long noncoding RNA GACAT3 promotes colorectal cancer cell proliferation, invasion, and migration through miR-149 |
title_fullStr |
Novel long noncoding RNA GACAT3 promotes colorectal cancer cell proliferation, invasion, and migration through miR-149 |
title_full_unstemmed |
Novel long noncoding RNA GACAT3 promotes colorectal cancer cell proliferation, invasion, and migration through miR-149 |
title_sort |
novel long noncoding rna gacat3 promotes colorectal cancer cell proliferation, invasion, and migration through mir-149 |
publisher |
Dove Medical Press |
series |
OncoTargets and Therapy |
issn |
1178-6930 |
publishDate |
2018-03-01 |
description |
Weiwei Zhou,1 Lei Wang,2 Yu Miao,1 Rongge Xing1 1Department of Pathology, Central Hospital of Cangzhou, Hebei, 2Department of Pharmacy, Cangzhou Medical College, Hebei, China Aim: To explore the expression and clinical significance of long noncoding RNA (lncRNA) gastric cancer-associated transcript 3 (GACAT3) in human colorectal cancer (CRC).Methods: Expression of GACAT3 in CRC tissues and cell lines was measured using quantitative real-time PCR. CCK-8 and colony formation assays were used to assess the effect of GACAT3 on CRC cell line proliferation. Transwell invasion and migration assays were performed to detect the effect of GACAT3 on CRC cell line invasion and migration. Bioinformatics prediction, luciferase reporter assay, and pull-down assay were used to determine if miR-149 was a target of GACAT3. In addition, we also conducted colony formation assays and invasion assays to verify that GACAT3 promotes tumor progression through miR-149. Finally, in vivo tumorigenesis studies were used to demonstrate subcutaneous tumor growth.Results: In the present study, we found that GACAT3 was highly expressed in CRC tissues and cell lines. Si-GACAT3 significantly decreased cell proliferation, motility, and invasiveness both in vitro and in vivo. We confirmed that downregulated GACAT3 significantly increased the expression of miR-149, and miR-149 binds to GACAT3 in a sequence-specific manner using luciferase reporter assays and pull-down assay. Further functional experiments indicated that GACAT3 could directly upregulate SP1 and STAT3 expressions by functioning as a competing endogenous RNA for miR-149, and consequentially, promoting CRC cell proliferation and invasion in vitro.Conclusion: This study demonstrated that GACAT3 promotes tumor progression through competitive binding to miR-149 and suggests a promising new strategy for anti-CRC therapy. Keywords: GACAT3, miR-149, colorectal cancer, growth, metastasis, SP1, STAT3 |
topic |
GACAT3 MiR-149 Colorectal Cancer Growth Metastasis |
url |
https://www.dovepress.com/novel-long-noncoding-rna-gacat3-promotes-colorectal-cancer-cell-prolif-peer-reviewed-article-OTT |
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