miR‑505 inhibits cell growth and EMT by targeting MAP3K3 through the AKT‑NFκB pathway in NSCLC cells
Open accessAbstract
MicroRNAs (miRNAs) are short non‑coding RNAs, which generally regulate gene expression at the post‑transcriptional level. Dysregulation of miRNAs has been reported in numerous cancer types, including lung cancer. In the present study, the role of miR‑505 in non‑small cell lung cancer (NSCLC) cells was investigated. miR‑505 served a tumor suppressor role in NSCLC cells. By reverse transcriptase‑quantitative polymerase chain reaction detection, it was demonstrated that miR‑505 was downregulated in NSCLC tissues and cell lines, which is negatively associated with large tumor size, Tumor‑Node‑Metastasis stage and distant metastasis in patients with NSCLC. Functional studies revealed that miR‑505 inhibited cell proliferation, migration, invasion and epithelial‑mesenchymal transition progress in vitro and tumor growth in vivo. Mechanically, mitogen‑activated protein kinase kinase kinase 3 (MAP3K3) was identified as a direct target of miR‑505 by binding to its 3'untranslated region and demonstrated to mediate the tumor suppressor roles of miR‑505 in NSCLC cells. The effect of miR‑505 on the activation of AKT/nuclear factor‑κB (NFκB) pathway, which was downstream targets of MAP3K3, was further analyzed by western blot analysis and immunofluorescence analyses. The data demonstrated the inhibition of the AKT/NFκB pathway upon overexpressing miR‑505 and the activation of AKT/NFκB pathway upon silencing miR‑505. Collectively, the data revealed the novel role and target of miR‑505 in NSCLC cells, which may provide novel insights regarding its role in the carcinogenesis of NSCLC and its potential values for clinical applications.
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miR-505-3p is known to have a tumor suppressor role.
“miR-505-3p is one of the miR types known to have a tumor suppressor role (14)(15)(16)(17).”
From Functional interaction between miR-505-3p and miR-21 contributes to GBM suppression (2026) · cites this paper as [15]
The Abstract and Discussion state that miR-505 has a tumor-suppressor role in non-small cell lung cancer cells. The paper does not identify the tumor-suppressing form as miR-505-3p; the only exact mention of that form in the retrieved passages is a reference about macrophages. Thus, the tumor-suppressor role is supported, but the claim’s 3p specificity is not established by this copy. (LLM, conf=0.83)
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Noncoding <scp>RNA</scp>s in disease
Lekka, E., & Hall, J. (2018) · FEBS Letters · doi:10.1002/1873-3468.13182 · Cited by 251 · see citing works
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Cited by
Sorted by citations
Functional interaction between miR-505-3p and miR-21 contributes to GBM suppression
Banadkooki, M. Z., Soltani, B. M., & Mowla, S. J. (2026) · Scientific Reports · doi:10.1038/s41598-026-59926-5
- Authors
- Tang, H., Lv, W., Sun, W., Bi, Q., & Hao, Y.
- Affiliations
- Qingdao Municipal Hospital (CN)
- Corresponding author
- Hao, Yueqin
- Venue
- International Journal of Molecular Medicine
- Publisher
- Spandidos Publications
- Published
- 2018-12-31
- Volume
- 43
- Issue
- 3
- Pages
- 1203-1216
- ISSN
- 1107-3756 (ISSN-L)
- 1791-244X
- PMC
- PMC6365022
- OpenAlex
- W2907986716
- Cited by
- 21
- References
- 1
- Citations by year
- 2026: 1 · 2025: 1 · 2024: 3 · 2023: 3 · 2022: 2 · 2021: 3 · 2020: 4 · 2019: 4
- FWCI
- 0.82
- Type
- journal article
- Language
- en
- Open access
- hybrid
- doi.org
- Licence
- cc-by-nc-nd
- Locations
- International Journal of Molecular Medicine (publishedVersion, cc-by-nc-nd)
- Europe PMC (PubMed Central) (publishedVersion, cc-by-nc-nd)
- PubMed Central (publishedVersion, cc-by-nc-nd)
- PubMed (publishedVersion)
- Topics
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › MicroRNA in disease regulation
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › Cancer-related molecular mechanisms research
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Mechanisms of cancer metastasis
- Keywords
- miR-505, non-small cell lung cancer, MAP3K3, epithelial-mesenchymal transition, tumor suppressor microRNA, cell proliferation, cell migration and invasion, metastasis
- MeSH terms
- Adult, Aged, Animals, Carcinoma, Non-Small-Cell Lung, Cell Cycle, Cell Movement, Female, Humans, Lung Neoplasms, Middle Aged, Neoplasm Metastasis, Neoplasm Staging, Tumor Stem Cell Assay, Signal Transduction, Gene Expression Regulation, Neoplastic, NF-kappa B, Genes, Reporter, RNA Interference, MicroRNAs, Cell Line, Tumor, MAP Kinase Kinase Kinase 3, Cell Proliferation, Proto-Oncogene Proteins c-akt, Mice, Epithelial-Mesenchymal Transition
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