天香丹能通过增强噬脂作用抑制泡沫细胞的形成,并减少动脉粥样硬化的进展。

IF 1.5 4区 生物学 Q4 CELL BIOLOGY
Ya-Jie Zhang, Huan He, Guligena Sawuer, Xue-Kuan Ma, Zulihumaer Ainiwaer, Dan-Dan Wu, Xia-Xia Zhang, Dong-Qing An
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引用次数: 0

摘要

本文章由计算机程序翻译,如有差异,请以英文原文为准。
Tianxiangdan suppresses foam cell formation by enhancing lipophagy and reduces the progression of atherosclerosis.

The aim of this study is to assess the impact of Tianxiangdan (TXD) on lipophagy in foam cells and its underlying mechanism in treating atherosclerosis, particularly focusing on its efficacy in lowering blood lipids. In vivo, ApoE-/- atherosclerosis mouse models were established for group intervention. Blood lipid levels of the mice were measured, lipid deposition and autophagy levels in atherosclerotic plaques were assessed, and co-localization of lipid droplets and autophagosomes was examined. In vitro, human THP-1 cells were induced into macrophages and then transformed into foam cells using ox-LDL induction. Different intervention groups were established. Total cellular cholesterol (TC), free cholesterol (FC), and autophagy levels were assessed, while the morphology and distribution of lipid droplets and autophagosomes in cells were observed using transmission electron microscopy. Western blot analysis was performed to evaluate the expression levels of PI3K, Akt, mTOR, TFEB, LC3II/I, ULK1, ABCA1, and p62. TXD effectively lowers blood lipid levels in ApoE-/- atherosclerotic mice, enhances lipophagy, and reduces lipid accumulation in foam cells and arterial lipid plaques. It achieves this by suppressing the expression of p85, Akt, and mTOR, while activating downstream autophagy signals such as TFEB, LC3II/I, and ULK1. Additionally, TXD reduces the expression of p62 and enhances the expression of the cholesterol transport molecule ABCA1. Our findings indicate that TXD activates lipophagy via the PI3K/Akt/mTOR pathway, leading to a reduction in lipid deposition within foam cells and plaques, thereby mitigating atherosclerosis.

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来源期刊
CiteScore
3.70
自引率
4.80%
发文量
96
审稿时长
3 months
期刊介绍: In Vitro Cellular & Developmental Biology - Animal is a journal of the Society for In Vitro Biology (SIVB). Original manuscripts reporting results of research in cellular, molecular, and developmental biology that employ or are relevant to organs, tissue, tumors, and cells in vitro will be considered for publication. Topics covered include: Biotechnology; Cell and Tissue Models; Cell Growth/Differentiation/Apoptosis; Cellular Pathology/Virology; Cytokines/Growth Factors/Adhesion Factors; Establishment of Cell Lines; Signal Transduction; Stem Cells; Toxicology/Chemical Carcinogenesis; Product Applications.
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