We are analyzing https://link.springer.com/article/10.1007/s00109-020-01923-w.

Title:
Oxidized LDL induces vimentin secretion by macrophages and contributes to atherosclerotic inflammation | Journal of Molecular Medicine
Description:
Abstract Activated macrophages show increased expression of vimentin, an intermediate filament protein. Macrophages secrete vimentin into extracellular space; however, the functions of extracellular vimentin and the process of vimentin secretion are not clearly defined. We found that oxidized low-density lipoproteins (oxLDL) via CD36 induced vimentin secretion in macrophages. We also revealed that extracellular vimentin induced macrophages to release inflammatory cytokines and augmented oxLDL-induced release of TNF-α and IL-6. Extracellular vimentin activated NF-κB signaling via phosphorylation of focal adhesion kinase (p-FAK) and IκB kinase (p-IκK). Extracellular vimentin also amplified the oxLDL-induced p-IκK increase and IκB decrease. Vimentin-induced TNF-α release was not dependent on Dectin-1, which is known to bind vimentin. We measured serum vimentin concentrations and found that patients with atherosclerotic coronary artery disease had higher levels of serum vimentin than normal subjects. Circulating oxLDL and vimentin concentrations showed a high degree of correlation. In mouse experiments, vimentin concentration was higher in the sera of apoE null mice with western diet–induced atherosclerosis than in the sera of chow diet–fed apoE null mice without atherosclerosis. We concluded that vimentin is secreted by oxLDL/CD36 interaction in macrophages and extracellular vimentin promotes macrophage release of pro-inflammatory cytokines. This may contribute to atherosclerotic inflammation and based on our analysis of serum vimentin, we suggest serum vimentin as a predictive marker for atherosclerosis. Key messages OxLDL via CD36 induces secretion of vimentin, a cytoskeletal protein in macrophages. Extracellular vimentin induces macrophages to release proinflammatory cytokines such as tumor necrotizing factor-alpha (TNF-α) and this process is mediated by activation of focal adhesion kinase (FAK) and NF-ƙB signaling. Serum concentrations of vimentin in coronary artery disease patients are higher than that in control group. Vimentin concentration is strongly correlated with oxLDL concentration in serum.
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Topics {✒️}

oxidized ldl-induced nf-kappa vimentin-induced tnf-α release oxldl-induced p-iκk increase oxidized low-density lipoproteins month download article/chapter nf-ƙb signaling drive nf-kappab activation augmented oxldl-induced release tumor necrotizing factor-alpha young mi park western diet–induced atherosclerosis intermediate filament protein intermediate filament cytoskeleton circulating oxidized ldl sang-hak lee cd36 induces secretion privacy choices/manage cookies intermediate vimentin filaments full article pdf apoe null mice plasma lipoprotein analysis coronary artery disease related subjects tnf-α national research foundation coronary heart disease oxidized ldl current therapeutic approaches promising therapeutic targets samsung medical center molecular medicine aims van der velden atherosclerotic lesion area release inflammatory cytokines release proinflammatory cytokines check access instant access human serum obtained european economic area vimentin concentrations showed intracellular organelle distribution impaired mechanical stability vimentin-deficient fibroblasts de winther mpj tnf-&alpha middle-aged men gratefully acknowledge dr eun-sook kang health fellowship foundation national creative initiatives

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         description:Activated macrophages show increased expression of vimentin, an intermediate filament protein. Macrophages secrete vimentin into extracellular space; however, the functions of extracellular vimentin and the process of vimentin secretion are not clearly defined. We found that oxidized low-density lipoproteins (oxLDL) via CD36 induced vimentin secretion in macrophages. We also revealed that extracellular vimentin induced macrophages to release inflammatory cytokines and augmented oxLDL-induced release of TNF-α and IL-6. Extracellular vimentin activated NF-κB signaling via phosphorylation of focal adhesion kinase (p-FAK) and IκB kinase (p-IκK). Extracellular vimentin also amplified the oxLDL-induced p-IκK increase and IκB decrease. Vimentin-induced TNF-α release was not dependent on Dectin-1, which is known to bind vimentin. We measured serum vimentin concentrations and found that patients with atherosclerotic coronary artery disease had higher levels of serum vimentin than normal subjects. Circulating oxLDL and vimentin concentrations showed a high degree of correlation. In mouse experiments, vimentin concentration was higher in the sera of apoE null mice with western diet–induced atherosclerosis than in the sera of chow diet–fed apoE null mice without atherosclerosis. We concluded that vimentin is secreted by oxLDL/CD36 interaction in macrophages and extracellular vimentin promotes macrophage release of pro-inflammatory cytokines. This may contribute to atherosclerotic inflammation and based on our analysis of serum vimentin, we suggest serum vimentin as a predictive marker for atherosclerosis.
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            Oxidized LDL
            Atherosclerosis
            Intermediate filament
            TNF-α
            NF-κB signaling
            Molecular Medicine
            Human Genetics
            Internal Medicine
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      headline:Oxidized LDL induces vimentin secretion by macrophages and contributes to atherosclerotic inflammation
      description:Activated macrophages show increased expression of vimentin, an intermediate filament protein. Macrophages secrete vimentin into extracellular space; however, the functions of extracellular vimentin and the process of vimentin secretion are not clearly defined. We found that oxidized low-density lipoproteins (oxLDL) via CD36 induced vimentin secretion in macrophages. We also revealed that extracellular vimentin induced macrophages to release inflammatory cytokines and augmented oxLDL-induced release of TNF-α and IL-6. Extracellular vimentin activated NF-κB signaling via phosphorylation of focal adhesion kinase (p-FAK) and IκB kinase (p-IκK). Extracellular vimentin also amplified the oxLDL-induced p-IκK increase and IκB decrease. Vimentin-induced TNF-α release was not dependent on Dectin-1, which is known to bind vimentin. We measured serum vimentin concentrations and found that patients with atherosclerotic coronary artery disease had higher levels of serum vimentin than normal subjects. Circulating oxLDL and vimentin concentrations showed a high degree of correlation. In mouse experiments, vimentin concentration was higher in the sera of apoE null mice with western diet–induced atherosclerosis than in the sera of chow diet–fed apoE null mice without atherosclerosis. We concluded that vimentin is secreted by oxLDL/CD36 interaction in macrophages and extracellular vimentin promotes macrophage release of pro-inflammatory cytokines. This may contribute to atherosclerotic inflammation and based on our analysis of serum vimentin, we suggest serum vimentin as a predictive marker for atherosclerosis.
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         Oxidized LDL
         Atherosclerosis
         Intermediate filament
         TNF-α
         NF-κB signaling
         Molecular Medicine
         Human Genetics
         Internal Medicine
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