Cited by 140Phagocytosis and Immune RegulationMicroRNA in disease regulationNeuroinflammation and Neurodegeneration Mechanisms

MicroRNA-17/20a/106a modulate macrophage inflammatory responses through targeting signal-regulatory protein α

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Zhu, Dihan, Pan, Chaoyun, Li, Limin, Bian, Zhen, Lv, Zhiyuan, Shi, Lei, Zhang, Jing, Li, Donghai +4 more·2013·Journal of Allergy and Clinical Immunology

Abstract

Background Signal-regulatory protein α (SIRPα) is an essential signaling molecule that modulates leukocyte inflammatory responses. However, the regulation of selective SIRPα synthesis and its dynamic changes in leukocytes under inflammatory stimulation remain incompletely understood. Objective We sought to identify the microRNAs (miRNAs) that posttranscriptionally regulate SIRPα synthesis and their roles in modulating macrophage inflammatory responses. Methods SIRPα was induced in SIRPα-negative promyelocytic cells by retinoic acid or phorbol 12-myristate 13-acetate, and the differential expression of miRNAs was assessed by means of microarray and quantitative RT-PCR assays. The roles of identified miRNAs in controlling SIRPα synthesis in leukocytes and leukocyte inflammatory responses were determined. Results We identified SIRPα as a common target gene of miR-17, miR-20a, and miR-106a. During SIRPα induction, levels of these 3 miRNAs were all reduced, and their downregulation by retinoic acid or phorbol 12-myristate 13-acetate occurred through suppression of the c-Myc signaling pathway. All miR-17, miR-20a, and miR-106a specifically bound to the same seed sequence within the SIRPα 3' untranslated region and correlated inversely with SIRPα protein levels in various cells. In macrophages upregulation of miR-17, miR-20a, and miR-106a by LPS served as the mechanism underlying LPS-induced SIRPα reduction and macrophage activation. Both in vitro and in vivo assays demonstrate that miR-17, miR-20a, and miR-106a regulate macrophage infiltration, phagocytosis, and proinflammatory cytokine secretion through targeting SIRPα. Conclusion These findings demonstrate for the first time that miR-17, miR-20a, and miR-106a regulate SIRPα synthesis and SIRPα-mediated macrophage inflammatory responses in a redundant fashion, providing a novel pathway in which a panel of miRNAs can modulate immune polarization through regulation of macrophage activation.

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Crossref · 10.1016/j.jaci.2013.02.005

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  • LPS stimulation leads to upregulation of miR-17, miR-20a, and miR-106a, which suppresses SIRPα, resulting in macrophage activation.

    “LPS stimulation, responsible for M1 phenotype differentiation, leads to upregulation of miR-17, miR-20a, and miR-106a, which suppresses SIRPα, resulting in macrophage activation [114].”

    From MicroRNAs as Regulators of Phagocytosis (2022) · cites this paper as [114]

  • Inhibition of miR-17, miR-20a, and miR-106a derepresses SIRPα, decreasing phagocytic capacity measured as zymosan uptake.

    “inhibition of the abovementioned microRNAs leads to derepression of SIRPα, resulting in decreased phagocytic capacity measured as zymosan uptake [114]”

    From MicroRNAs as Regulators of Phagocytosis (2022) · cites this paper as [114]

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Authors
Zhu, D., Pan, C., Li, L., Bian, Z., Lv, Z., Shi, L., Zhang, J., Li, D., Gu, H., Zhang, C.-Y., Liu, Y., & Zen, K.
Affiliations
  • Nanjing General Hospital of Nanjing Military Command (CN)
  • State Key Laboratory of Pharmaceutical Biotechnology (CN)
  • Georgia State University (US)
Corresponding author
  • Zhang, Chen-Yu
  • Liu, Yuan
  • Zen, Ke
Venue
Journal of Allergy and Clinical Immunology
Publisher
Elsevier BV
Published
2013-08
Volume
132
Issue
2
Pages
426-436.e8
ISSN
0091-6749 (ISSN-L)
OpenAlex
W2070985562
Cited by
140
References
41
Citations by year
2026: 3 · 2025: 6 · 2024: 12 · 2023: 12 · 2022: 8 · 2021: 20 · 2020: 11 · 2019: 14 · 2018: 9 · 2017: 12 · 2016: 16 · 2015: 7 · 2014: 6 · 2013: 3
FWCI
5.90
Type
journal article
Language
en
Open access
Locations
  • Journal of Allergy and Clinical Immunology (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
National Institute of Allergy and Infectious Diseases (R01AI106839)
Topics
  • Life Sciences › Immunology and Microbiology › Immunology › Phagocytosis and Immune Regulation
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › MicroRNA in disease regulation
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
Keywords
microRNA-17, microRNA-20a, SIRPα, macrophage activation, macrophage inflammation, 3' untranslated region, post-transcriptional regulation, lipopolysaccharide, phagocytosis, macrophage infiltration, inflammatory cytokines, immune polarization
MeSH terms
Animals, Antigens, Differentiation, Cell Line, Gene Expression Regulation, Humans, Inflammation, Macrophage Activation, Macrophages, Male, Mice, Inbred C57BL, Receptors, Immunologic, Signal Transduction, HL-60 Cells, U937 Cells, MicroRNAs, Mice

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