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Research article
LncRNA LINC00240 suppresses invasion and migration in non-small cell lung cancer by sponging miR-7-5p
Jaeku Kang
College of Medicine, Konyang University
Corresponding Author
ORCiD: https://orcid.org/0000-0002-8660-7940
License:
This work is licensed under a CC BY 4.0 License. Read Full License
View the published version at BMC Cancer.
Background: lncRNAs have important roles in regulating cancer biology. Accumulating evidence has established a link between the dysregulation of lncRNAs and microRNA in cancer progression. In previous studies, miR-7-5p has been found to be significantly down-regulated in mesenchymal-like lung cancer cell lines and directly regulated EGFR. In this work, we investigated the lncRNA partner of miR-7-5p in the progression of lung cancer.
Methods: We investigated the expression of miR-7-5p and the lncRNA after transfection with an miR-7-5p mimics using a microarray. The microarray results were validated using quantitative real time-polymerase Chain Reaction (qRT-PCR). The regulatory effects of lncRNA on miR-7-5p and its target were evaluated by changes in the expression of miR-7-5p after transfection with siRNAs for lncRNA and the synthesis of full-length lncRNA. The effect of miR-7-5p on lncRNA and the miRNA target was evaluated after transfection with miRNA mimic and inhibitor. The role of lncRNA in cancer progression was determined using invasion and migration assays. The level of lncRNA and EGFR in lung cancer and normal lung tissue was analyzed using TCGA data.
Results: We found that LINC00240 was downregulated in lung cancer cell line after miR-7-5p transfection with an miR-7-5p mimic. Further investigations revealed that the knockdown of LINC00240 induced the overexpression of miR-7-5p. The overexpression of miR-7-5p diminished cancer invasion and migration. The EGFR expression was down regulated after siRNA treatment for LINC00240. Silencing LINC00240 suppressed the invasion and migration of lung cancer cells, whereas LINC00240 overexpression exerted the opposite effect. The lower expression of LINC00240 in squamous lung cancer was analyzed using TCGA data.
Conclusions: Taken together, LINC00240 acted as a sponge for miR-7-5p and induced the overexpression of EGFR. LINC00240 may represent a potential target for the treatment of lung cancer.
Keywords
LINC00240, miRNA-7, Non-small cell lung cancer, EGFR
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CURRENT STATUS: Published
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Posted 20 Nov, 2020
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Reviewer #2 agreed
On 28 Nov, 2020
Reviewers invited
Invitations sent on 16 Nov, 2020
Reviewer #1 agreed
On 16 Nov, 2020
Editor assigned
On 15 Nov, 2020
Submission checks complete
On 15 Nov, 2020
Editor invited
On 15 Nov, 2020
No comments provided
Editorial decision: Major revision
On 17 Sep, 2020
Review #1 received
Received 16 Sep, 2020
Review #2 received
Received 14 Sep, 2020
Reviewer #2 agreed
On 28 Aug, 2020
Reviewer #1 agreed
On 26 Aug, 2020
Reviewers invited
Invitations sent on 17 Jun, 2020
Editor assigned
On 15 Jun, 2020
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This preprint is under consideration at BMC Cancer. A preprint is a preliminary version of a manuscript that has not completed peer review at a journal. Research Square does not conduct peer review prior to posting preprints. The posting of a preprint on this server should not be interpreted as an endorsement of its validity or suitability for dissemination as established information or for guiding clinical practice.
Learn more about In Review
Research article
LncRNA LINC00240 suppresses invasion and migration in non-small cell lung cancer by sponging miR-7-5p
Jaeku Kang
College of Medicine, Konyang University
Corresponding Author
ORCiD: https://orcid.org/0000-0002-8660-7940
Badges
Prescreen
This manuscript passed our Prescreen assessment
Complete author information
Appropriate declaration statements
Potential risks to human health
Prescreen
Peer Review Timeline
CURRENT STATUS: Published
Version 2
Posted 20 Nov, 2020
No comments provided
Reviewer #2 agreed
On 28 Nov, 2020
Reviewers invited
Invitations sent on 16 Nov, 2020
Reviewer #1 agreed
On 16 Nov, 2020
Editor assigned
On 15 Nov, 2020
Submission checks complete
On 15 Nov, 2020
Editor invited
On 15 Nov, 2020
No comments provided
Editorial decision: Major revision
On 17 Sep, 2020
Review #1 received
Received 16 Sep, 2020
Review #2 received
Received 14 Sep, 2020
Reviewer #2 agreed
On 28 Aug, 2020
Reviewer #1 agreed
On 26 Aug, 2020
Reviewers invited
Invitations sent on 17 Jun, 2020
Editor assigned
On 15 Jun, 2020
Submission checks complete
On 12 Jun, 2020
Editor invited
On 12 Jun, 2020
Metrics
Comments: 0
PDF Downloads: ...
HTML Views: ...
License:
This work is licensed under a CC BY 4.0 License. Read Full License
View the published version at BMC Cancer.
Background: lncRNAs have important roles in regulating cancer biology. Accumulating evidence has established a link between the dysregulation of lncRNAs and microRNA in cancer progression. In previous studies, miR-7-5p has been found to be significantly down-regulated in mesenchymal-like lung cancer cell lines and directly regulated EGFR. In this work, we investigated the lncRNA partner of miR-7-5p in the progression of lung cancer.
Methods: We investigated the expression of miR-7-5p and the lncRNA after transfection with an miR-7-5p mimics using a microarray. The microarray results were validated using quantitative real time-polymerase Chain Reaction (qRT-PCR). The regulatory effects of lncRNA on miR-7-5p and its target were evaluated by changes in the expression of miR-7-5p after transfection with siRNAs for lncRNA and the synthesis of full-length lncRNA. The effect of miR-7-5p on lncRNA and the miRNA target was evaluated after transfection with miRNA mimic and inhibitor. The role of lncRNA in cancer progression was determined using invasion and migration assays. The level of lncRNA and EGFR in lung cancer and normal lung tissue was analyzed using TCGA data.
Results: We found that LINC00240 was downregulated in lung cancer cell line after miR-7-5p transfection with an miR-7-5p mimic. Further investigations revealed that the knockdown of LINC00240 induced the overexpression of miR-7-5p. The overexpression of miR-7-5p diminished cancer invasion and migration. The EGFR expression was down regulated after siRNA treatment for LINC00240. Silencing LINC00240 suppressed the invasion and migration of lung cancer cells, whereas LINC00240 overexpression exerted the opposite effect. The lower expression of LINC00240 in squamous lung cancer was analyzed using TCGA data.
Conclusions: Taken together, LINC00240 acted as a sponge for miR-7-5p and induced the overexpression of EGFR. LINC00240 may represent a potential target for the treatment of lung cancer.
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