ArticleImmunity, inflammation and disease2024
The Effects of the oxLDL/β2GPI/anti-β2GPI Complex on Macrophage Autophagy and its Mechanism.
Article in Immunity, inflammation and disease, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers, 1 of them a synthesis that pooled it.
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Who cites it
3 citing papers in PubMed, 1 synthesis or guideline pooled it.
- Macrophage-associated kinase signaling in atherosclerosis - a systematic review.Cell communication and signaling : CCS · 2026Pooled it
- A novel EGR1-driven GLUL/mTOR axis regulates macropinocytosis-mediated crosstalk in pancreatic stellate cell-cancer metastasis.Journal of translational medicine · 2026Article
- The potential mechanism of celastrol attenuating atherosclerosis by promoting macrophage autophagy via AMPK/ULK1 pathway.Frontiers in pharmacology · 2025Article
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4 authors.
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Abstract
backgroundPrevious research has established that the oxidized low-density lipoprotein/β2-glycoprotein I/anti-β2-glycoprotein I antibody (oxLDL/β2GPI/anti-β2GPI) complex can stimulate macrophages to secrete molecules associated with atherosclerosis (AS), such as monocyte chemotactic protein 1 (MCP-1), tissue factor (TF), and tumor necrosis factor-α (TNF-α). This complex also enhances the uptake of oxLDL, thereby accelerating foam cell formation through the Toll-like receptor-4/nuclear factor kappa B (TLR4/NF-κB) pathway. Given the critical role of macrophage autophagy in the instability of vulnerable atherosclerotic plaques, it is imperative to investigate whether the oxLDL/β2GPI/anti-β2GPI complex influences macrophage autophagy in AS. This study aims to elucidate the effects and underlying mechanisms of the oxLDL/β2GPI/anti-β2GPI complex on macrophage autophagy in AS.
methodsExperiments were conducted using murine macrophage RAW264.7 cells and the human monocytic cell line THP-1. Western blot analysis was employed to determine the expressions of autophagy-associated markers and signaling pathway proteins. Autophagosomes were detected through mRFP-GFP-LC3 adenoviral transfection and transmission electron microscopy (TEM).
resultsTreatment of macrophages with the oxLDL/β2GPI/anti-β2GPI complex resulted in decreased expressions of Beclin1 and LC3 proteins, alongside an upregulation of SQSTM1/P62 protein expression. Additionally, there was a reduction in the number of autophagosomes and autolysosomes. An increase in the phosphorylation levels of phosphoinositide-3-kinase (PI3K), protein kinase B (AKT), and mammalian target of rapamycin (mTOR) was also observed. Notably, the expressions of autophagy-associated markers were partially restored when the TLR4/NF-κB and PI3K/AKT/mTOR pathways were inhibited by their respective inhibitors.
conclusionsOur findings indicate that the oxLDL/β2GPI/anti-β2GPI complex inhibits macrophage autophagy in AS via the TLR4/NF-κB and PI3K/AKT/mTOR signaling pathways.
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