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miRNA‑7515 suppresses pancreatic cancer cell proliferation, migration and invasion via downregulating IGF‑1 expression

  • Authors:
    • Shan Lei
    • Zhirui Zeng
    • Zhiwei He
    • Wenpeng Cao
  • View Affiliations / Copyright

    Affiliations: Department of Physiology, School of Basic Medicine, Guizhou Medical University, Guiyang, Guizhou 550009, P.R. China, Department of Hepatic‑Biliary‑Pancreatic Surgery, The Affiliated Hospital of Guizhou Medical University, Guiyang, Guizhou 550009, P.R. China
    Copyright: © Lei et al. This is an open access article distributed under the terms of Creative Commons Attribution License.
  • Article Number: 200
    |
    Published online on: July 22, 2021
       https://doi.org/10.3892/or.2021.8151
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Abstract

Pancreatic cancer (PC) is a lethal malignancy of the gastrointestinal tract. Previous studies have reported that microRNAs (miRNAs/miRs) are involved in the tumorigenesis of PC. Therefore, the present study aimed to determine the effects of miR‑7515 on PC cell proliferation, invasion and migration in vitro and in vivo, and investigate its underlying molecular mechanism using bioinformatics, double luciferase assay and western blotting. The results revealed that the expression levels of miR‑7515 were downregulated in PC, which predicted a poor clinical outcome. The overexpression of miR‑7515 significantly decreased the proliferation, invasive and migratory abilities of PC cells in vitro and in vivo, while the knockdown of miR‑7515 exerted the opposite effects. miR‑7515 was identified to directly bind to insulin‑like growth factor 1 (IGF‑1) and downregulate its expression, which subsequently downregulated the Ras/Raf/MEK/ERK signalling pathway. The overexpression of IGF‑1 reversed the inhibitory effects of miR‑7515 overexpression on PC cells. In conclusion, the findings of the present study indicated that miR‑7515 may act as a tumor suppressor in PC, as it repressed PC cell proliferation invasion and migration via downregulating the expression of IGF‑1 and the activity of the Ras/Raf/MEK/ERK signalling pathways.
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Copy and paste a formatted citation
Spandidos Publications style
Lei S, Zeng Z, He Z and Cao W: miRNA‑7515 suppresses pancreatic cancer cell proliferation, migration and invasion via downregulating IGF‑1 expression. Oncol Rep 46: 200, 2021.
APA
Lei, S., Zeng, Z., He, Z., & Cao, W. (2021). miRNA‑7515 suppresses pancreatic cancer cell proliferation, migration and invasion via downregulating IGF‑1 expression. Oncology Reports, 46, 200. https://doi.org/10.3892/or.2021.8151
MLA
Lei, S., Zeng, Z., He, Z., Cao, W."miRNA‑7515 suppresses pancreatic cancer cell proliferation, migration and invasion via downregulating IGF‑1 expression". Oncology Reports 46.3 (2021): 200.
Chicago
Lei, S., Zeng, Z., He, Z., Cao, W."miRNA‑7515 suppresses pancreatic cancer cell proliferation, migration and invasion via downregulating IGF‑1 expression". Oncology Reports 46, no. 3 (2021): 200. https://doi.org/10.3892/or.2021.8151
Copy and paste a formatted citation
x
Spandidos Publications style
Lei S, Zeng Z, He Z and Cao W: miRNA‑7515 suppresses pancreatic cancer cell proliferation, migration and invasion via downregulating IGF‑1 expression. Oncol Rep 46: 200, 2021.
APA
Lei, S., Zeng, Z., He, Z., & Cao, W. (2021). miRNA‑7515 suppresses pancreatic cancer cell proliferation, migration and invasion via downregulating IGF‑1 expression. Oncology Reports, 46, 200. https://doi.org/10.3892/or.2021.8151
MLA
Lei, S., Zeng, Z., He, Z., Cao, W."miRNA‑7515 suppresses pancreatic cancer cell proliferation, migration and invasion via downregulating IGF‑1 expression". Oncology Reports 46.3 (2021): 200.
Chicago
Lei, S., Zeng, Z., He, Z., Cao, W."miRNA‑7515 suppresses pancreatic cancer cell proliferation, migration and invasion via downregulating IGF‑1 expression". Oncology Reports 46, no. 3 (2021): 200. https://doi.org/10.3892/or.2021.8151
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