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肥胖相关的炎症性巨噬细胞极化受辣椒素和植物二苯乙烯抑制。

Obesity-associated inflammatory macrophage polarization is inhibited by capsaicin and phytolignans.

机构信息

Department of Medicine, The University of Vermont, Burlington, Vermont, United States.

The Vermont Lung Center, The University of Vermont, Burlington, Vermont, United States.

出版信息

Am J Physiol Regul Integr Comp Physiol. 2024 May 1;326(5):R370-R382. doi: 10.1152/ajpregu.00161.2023. Epub 2024 Mar 4.

Abstract

Obesity is often accompanied by increased adipose tissue inflammation, a process that is partially driven by adipose tissue-resident macrophages. In this study, we explored the potential for plant-derived dietary compounds to exert anti-inflammatory effects in macrophages that alleviate obesity-associated adipocyte dysfunction. Capsaicin (CAP), schisandrin A (SA), enterodiol (END), and enterolactone (ENL) treatment polarized J774 macrophages to an "M2" or anti-inflammatory phenotype and inhibited responses to stimulation with lipopolysaccharide (LPS). Furthermore, these compounds blocked inflammasome activation when administered just before ATP-induced NLRP3 activation, as evidenced by the abrogation of IL-1β release in mouse macrophages and human peripheral blood monocytes. The addition of CAP, SA, or ENL during the differentiation of bone marrow-derived macrophages was also sufficient to inhibit LPS-induced IL-6 and TNFα production. Finally, CAP, END, and ENL treatment during differentiation of 3T3-L1 adipocytes induced an adiponectin-high phenotype accompanied by increases in thermogenic gene expression, and conditioned media from these adipocytes inhibited LPS-induced production of IL-1β, IL-6, and TNFα from J774 macrophages. These polarizing effects were partially mediated by the elevated adiponectin and decreased syndecan-4 in the adipocyte-conditioned media. These results implicate the contribution of plant-derived dietary components to the modulation of macrophages and adipocytes in obesity. The utility of food-based products to prevent or alleviate chronic conditions such as obesity and its associated comorbidities is an attractive approach. Capsaicin, schisandrin A, enterodiol, and enterolactone, phytochemicals present in traditional medicinal food, decreased proinflammatory cytokine production from macrophages that, in turn, reduced obesity-associated adipocyte dysfunction. These results implicate the contribution of plant-derived dietary components to the modulation of macrophages and adipocytes in obesity.

摘要

肥胖常伴有脂肪组织炎症的增加,这一过程部分由脂肪组织驻留巨噬细胞驱动。在这项研究中,我们探索了植物源性膳食化合物在巨噬细胞中发挥抗炎作用的潜力,以减轻与肥胖相关的脂肪细胞功能障碍。辣椒素(CAP)、五味子甲素(SA)、肠二醇(END)和肠内酯(ENL)处理将 J774 巨噬细胞极化为“M2”或抗炎表型,并抑制脂多糖(LPS)刺激的反应。此外,这些化合物在 ATP 诱导 NLRP3 激活之前给药时可阻断炎症小体的激活,这表现为在小鼠巨噬细胞和人外周血单核细胞中 IL-1β释放的阻断。在骨髓来源的巨噬细胞分化过程中添加 CAP、SA 或 ENL 也足以抑制 LPS 诱导的 IL-6 和 TNFα 产生。最后,CAP、END 和 ENL 在 3T3-L1 脂肪细胞分化过程中的处理诱导了脂联素高表型,伴随着产热基因表达的增加,并且来自这些脂肪细胞的条件培养基抑制了 LPS 诱导的 J774 巨噬细胞中 IL-1β、IL-6 和 TNFα 的产生。这些极化作用部分是由脂肪细胞条件培养基中升高的脂联素和降低的 syndecan-4 介导的。这些结果表明植物源性膳食成分对肥胖中巨噬细胞和脂肪细胞的调节有贡献。利用基于食物的产品来预防或减轻肥胖及其相关合并症等慢性疾病是一种有吸引力的方法。辣椒素、五味子甲素、肠二醇和肠内酯,这些存在于传统药食同源植物中的植物化学物质,降低了巨噬细胞中促炎细胞因子的产生,进而减轻了与肥胖相关的脂肪细胞功能障碍。这些结果表明植物源性膳食成分对肥胖中巨噬细胞和脂肪细胞的调节有贡献。

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