Cited by 63Immune cells in cancerMicroRNA in disease regulationAngiogenesis and VEGF in Cancer

RETRACTED: miR-181a Induces Macrophage Polarized to M2 Phenotype and Promotes M2 Macrophage-mediated Tumor Cell Metastasis by Targeting KLF6 and C/EBPα

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Bi, Jia, Zeng, Xianxin, Zhao, Lin, Wei, Qian, Yu, Lifeng, Wang, Xinnan, Yu, Zhaojin, Cao, Yaming +2 more·2016·Molecular Therapy - Nucleic Acids

Abstract

Macrophages can acquire a variety of polarization status and functions: classically activated macrophages (M1 macrophages); alternatively activated macrophages (M2 macrophages). However, the molecular basis of the process is still unclear. Here, this study addresses that microRNA-181a (miR-181a) is a key molecule controlling macrophage polarization. We found that miR-181a is overexpressed in M2 macrophages than in M1 macrophages. miR-181a expression was decreased when M2 phenotype converted to M1, whereas it increased when M1 phenotype converted to M2. Overexpression of miR-181a in M1 macrophages diminished M1 phenotype expression while promoting polarization to the M2 phenotype. In contrast, knockdown of miR-181a in M2 macrophages promoted M1 polarization and diminished M2 phenotype expression. Mechanistically, Bioinformatic analysis revealed that Kruppel-like factor 6 (KLF6) and CCAAT/enhancer binding protein-α (C/EBPα) is a potential target of miR-181a and luciferase assay confirmed that KLF6 and C/EBPα translation is suppressed by miR-181a through interaction with the 3'UTR of KLF6 and C/EBPα mRNA. Further analysis showed that induction of miR-181a suppressed KLF6 and C/EBPα protein expression. Importantly, miR-181a also diminishes M2 macrophages-mediated migration and invasion capacity of tumor cells. Collectively, our results suggest that miR-181a plays a significant role in regulating macrophage polarization through directly target KLF6 and C/EBPα.

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Crossref · 10.1038/mtna.2016.71This paper is marked retracted.

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  • Overexpression of miR-181a promotes M2 polarization by targeting KLF6 and C/EBPα.

    “Bi et al. showed that overexpression of miR-181a promotes M2 polarization by targeting KLF6 and C/EBPα [164].”

    From MicroRNAs as Regulators of Phagocytosis (2022) · cites this paper as [164]

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1 retracted

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Research works printed but not linked: 1

  1. Zhang, Y, Zhang, M, Zhong, M, Suo, Q and Lv, K (2013). Expression profiles of miRNAs in polarized macrophages. Int J Mol Med 31: 797–802. 23443577

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Authors
Bi, J., Zeng, X., Zhao, L., Wei, Q., Yu, L., Wang, X., Yu, Z., Cao, Y., Shan, F., & Wei, M.
Affiliations
China Medical University (CN)
Corresponding author
Wei, Minjie
Venue
Molecular Therapy - Nucleic Acids
Publisher
Elsevier BV
Published
2016
Volume
5
Issue
9
Pages
e368
ISSN
2162-2531 (ISSN-L)
OpenAlex
W2526085451
Cited by
63
References
46
Citations by year
2026: 1 · 2025: 1 · 2023: 3 · 2022: 12 · 2021: 12 · 2020: 8 · 2019: 7 · 2018: 9 · 2017: 10
FWCI
5.26
Type
journal article
Language
en
Status
Retracted
Open access
Locations
  • Molecular Therapy — Nucleic Acids (publishedVersion, cc-by-nc-nd)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by-nc-nd)
  • PubMed Central (publishedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
U.S. Department of Veterans Affairs (RCS 14-232)
Topics
  • Life Sciences › Immunology and Microbiology › Immunology › Immune cells in cancer
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › MicroRNA in disease regulation
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Angiogenesis and VEGF in Cancer
Keywords
miR-181a, macrophage polarization, M2 macrophages, M1 macrophages, KLF6, C/EBPα, metastasis, tumor cell migration and invasion, microRNA target regulation, 3' untranslated region, retraction

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