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首页> 外文期刊>IUBMB life >Quercetin protects necrotic insult and promotes apoptosis by attenuating the expression of RAGE and its ligand HMGB1 in human breast adenocarcinoma cells
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Quercetin protects necrotic insult and promotes apoptosis by attenuating the expression of RAGE and its ligand HMGB1 in human breast adenocarcinoma cells

机译:槲皮素通过减弱人乳腺腺癌细胞中RAGE及其配体HMGB1的表达来保护坏死损伤并促进凋亡

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摘要

The receptor for advanced glycation end-products (RAGE) is a multiligand member of the immunoglobulin superfamily, which plays an important role in maintaining cellular homeostasis. It is normally expressed on immune cells, including macrophages, monocytes, dendritic cells and T cells to maintain homeostasis, but highly upregulated at sites of vascular pathology. Accumulating evidence suggest that the elevated expression of RAGE and its ligand HMGB-1 was found in various types of cancer. The accumulation of RAGE and its ligand high-mobility group box proteins-1 (HMGB1) activates complex signaling network for cell survival and evades apoptosis. Therefore, targeting the RAGE-mediated signaling could be the promising strategies for the therapeutic potential of cancer. This study was aimed to examine the biological potential of quercetin on the regulation of RAGE- and HMGB1-mediated activation of NF-B and induction of apoptotic cell death in MCF-7 cells. Our findings demonstrate that quercetin inhibits the expression of RAGE and HMGB1 in MCF-7 cells. In addition, quercetin protects necrotic insult and augments apoptosis in MCF-7 cells. Taken together, these results suggest that quercetin plays an important role in modulating RAGE and HMGB1 signaling and induces apoptotic cell death in MCF-7 cells. (c) 2015 IUBMB Life, 2015 67(5):361-373, 2015
机译:晚期糖基化终产物(RAGE)的受体是免疫球蛋白超家族的多配体成员,在维持细胞稳态中起着重要作用。它通常在免疫细胞(包括巨噬细胞,单核细胞,树突状细胞和T细胞)上表达,以维持体内稳态,但在血管病理部位高度上调。越来越多的证据表明,在各种类型的癌症中都发现RAGE及其配体HMGB-1的表达升高。 RAGE及其配体高迁移率族框蛋白1(HMGB1)的积累激活了细胞存活的复杂信号网络,并逃避了细胞凋亡。因此,靶向RAGE介导的信号传导可能是治疗癌症的有前途的策略。这项研究旨在检查槲皮素在调节RAGE和HMGB1介导的NF-B活化以及诱导MCF-7细胞凋亡性细胞死亡方面的生物学潜力。我们的发现证明槲皮素抑制MCF-7细胞中RAGE和HMGB1的表达。此外,槲皮素可保护坏死性损伤并增强MCF-7细胞的凋亡。综上所述,这些结果表明槲皮素在调节RAGE和HMGB1信号传导中起重要作用,并诱导MCF-7细胞凋亡。 (c)2015年IUBMB生命,2015年67(5):361-373,2015年

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