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Article

PCSK9 siRNA suppresses the inflammatory response induced by oxLDL through inhibition of NF-κB activation in THP-1-derived macrophages

  • Authors:
    • Zhihan Tang
    • Lu Jiang
    • Juan Peng
    • Zhong Ren
    • Dangheng Wei
    • Chunyang Wu
    • Lihong Pan
    • Zhisheng Jiang
    • Lushan Liu
  • View Affiliations / Copyright

    Affiliations: Institute of Cardiovascular Disease, Key Laboratory for Arteriosclerology of Hunan Province, University of South China, Hengyang, Hunan 421001, P.R. China, Department of Neurology, The Second Affiliated Hospital, University of South China, Hengyang, Hunan 421001, P.R. China
  • Pages: 931-938
    |
    Published online on: July 20, 2012
       https://doi.org/10.3892/ijmm.2012.1072
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Abstract

Proprotein convertase subtilisin/kexin 9 (PCSK9), a member of the protein-converting enzyme family, is highly expressed in adult hepatocytes and small intestinal enterocytes. To our knowledge, in this study, we demonstrate for the first time that PCSK9 is upregulated in a dose-dependent manner via oxidized low-density lipoprotein (oxLDL) stimulation in THP-1-derived macrophages. PCSK9 small interfering RNA (siRNA) suppresses the oxLDL-induced inflammatory cytokine expression in THP-1-derived macrophages. The exposure of macrophages to oxLDL markedly increased the expression of NF-κB protein in the nucleus. However, this effect was significantly attenuated by PCSK9 siRNA. These findings indicate that PCSK9 expression is induced by oxLDL, and that PCSK9 siRNA protects against inflammation via the inhibition of NF-κB activation in oxLDL-stimulated THP-1-derived macrophages. Our results suggest that PCSK9 may be used as a therapeutic target for the treatment of atherosclerosis since PCSK9 siRNA suppresses oxLDL-induced IκB-α degradation and NF-κB nuclear translocation into THP-1-derived macrophages.
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Copy and paste a formatted citation
Spandidos Publications style
Tang Z, Jiang L, Peng J, Ren Z, Wei D, Wu C, Pan L, Jiang Z and Liu L: PCSK9 siRNA suppresses the inflammatory response induced by oxLDL through inhibition of NF-κB activation in THP-1-derived macrophages. Int J Mol Med 30: 931-938, 2012.
APA
Tang, Z., Jiang, L., Peng, J., Ren, Z., Wei, D., Wu, C. ... Liu, L. (2012). PCSK9 siRNA suppresses the inflammatory response induced by oxLDL through inhibition of NF-κB activation in THP-1-derived macrophages. International Journal of Molecular Medicine, 30, 931-938. https://doi.org/10.3892/ijmm.2012.1072
MLA
Tang, Z., Jiang, L., Peng, J., Ren, Z., Wei, D., Wu, C., Pan, L., Jiang, Z., Liu, L."PCSK9 siRNA suppresses the inflammatory response induced by oxLDL through inhibition of NF-κB activation in THP-1-derived macrophages". International Journal of Molecular Medicine 30.4 (2012): 931-938.
Chicago
Tang, Z., Jiang, L., Peng, J., Ren, Z., Wei, D., Wu, C., Pan, L., Jiang, Z., Liu, L."PCSK9 siRNA suppresses the inflammatory response induced by oxLDL through inhibition of NF-κB activation in THP-1-derived macrophages". International Journal of Molecular Medicine 30, no. 4 (2012): 931-938. https://doi.org/10.3892/ijmm.2012.1072
Copy and paste a formatted citation
x
Spandidos Publications style
Tang Z, Jiang L, Peng J, Ren Z, Wei D, Wu C, Pan L, Jiang Z and Liu L: PCSK9 siRNA suppresses the inflammatory response induced by oxLDL through inhibition of NF-κB activation in THP-1-derived macrophages. Int J Mol Med 30: 931-938, 2012.
APA
Tang, Z., Jiang, L., Peng, J., Ren, Z., Wei, D., Wu, C. ... Liu, L. (2012). PCSK9 siRNA suppresses the inflammatory response induced by oxLDL through inhibition of NF-κB activation in THP-1-derived macrophages. International Journal of Molecular Medicine, 30, 931-938. https://doi.org/10.3892/ijmm.2012.1072
MLA
Tang, Z., Jiang, L., Peng, J., Ren, Z., Wei, D., Wu, C., Pan, L., Jiang, Z., Liu, L."PCSK9 siRNA suppresses the inflammatory response induced by oxLDL through inhibition of NF-κB activation in THP-1-derived macrophages". International Journal of Molecular Medicine 30.4 (2012): 931-938.
Chicago
Tang, Z., Jiang, L., Peng, J., Ren, Z., Wei, D., Wu, C., Pan, L., Jiang, Z., Liu, L."PCSK9 siRNA suppresses the inflammatory response induced by oxLDL through inhibition of NF-κB activation in THP-1-derived macrophages". International Journal of Molecular Medicine 30, no. 4 (2012): 931-938. https://doi.org/10.3892/ijmm.2012.1072
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