Effect of Aryl-Cyclohexanones and their Derivatives on Macrophage Polarization In Vitro
作者:Tainá L. Lubschinski、Luiz A. E. Pollo、Eduarda T. B. Mohr、Julia S. da Rosa、Luigi A. Nardino、Louis P. Sandjo、Maique W. Biavatti、Eduardo M. Dalmarco
DOI:10.1007/s10753-022-01646-9
日期:2022.8
Macrophages are critical in both tissue homeostasis and inflammation, and shifts in their polarization have been indicated as pivotal for the resolution of inflammatory processes. Inflammation is a complex and necessary component of the immune response to stimuli that are harmful to host homeostasis and is regulated by cellular and molecular events that remain a source of ongoing investigation. Among the compounds studied that have potential against autoimmune and inflammatory diseases, cannabinoids are currently highlighted. In this work, nineteen aryl-cyclohexanones diesters and their derivatives were synthesized based on the aryl-cyclohexane skeleton of phytocannabinoids, such as cannabidiol (CBD), and were evaluated for their anti-inflammatory and macrophage polarization potential. The results showed that Compound 4 inhibited the production of nitric oxide in RAW 264.7 macrophages. Furthermore, it reduced the levels of pro-inflammatory cytokines IL-12p70, TNF-α, IFN-γ, MCP-1, and IL-6 while, at the same time, was able to increase the production of anti-inflammatory cytokines IL-4, IL-10, and IL-13. Compound 4 also reduced macrophage apoptosis, increased the expression of the CD206 (mannose receptor) and at the same time, decreased the expression of CD284 (TLR-4 receptor) on the surface of these cells. Finally, it increased the phagocytic capacity and inhibited the phosphorylation of the p65 of NF-kβ. In conclusion, Compound 4, identified as diethyl-4-hydroxy-2-(4-methoxyphenyl)-4-methyl-6-oxocyclohexane-1–3-dicarboxylate, showed significant anti-inflammatory effect, while demonstrating the ability to transform phenotypically macrophages from the M1 phenotype (pro-inflammatory) to the M2 phenotype (anti-inflammatory). This led us to hypothesize that the main mechanism of anti-inflammatory effect of this molecule is linked to its immune modulation capacity.
巨噬细胞在组织稳态和炎症过程中都起着至关重要的作用,其极化的变化被认为是解决炎症过程的关键。炎症是免疫反应的一个复杂而必要的组成部分,它针对的是对宿主稳态有害的刺激,并受到细胞和分子事件的调节,而这些事件仍是研究的一个来源。在已研究的具有抗自身免疫性和炎症性疾病潜力的化合物中,大麻素是目前研究的重点。本研究以大麻二酚(CBD)等植物大麻素的芳基环己烷骨架为基础,合成了 19 种芳基环己酮二酯及其衍生物,并对其抗炎和巨噬细胞极化潜力进行了评估。结果表明,化合物 4 能抑制 RAW 264.7 巨噬细胞产生一氧化氮。此外,它还能降低促炎细胞因子 IL-12p70、TNF-α、IFN-γ、MCP-1 和 IL-6 的水平,同时还能增加抗炎细胞因子 IL-4、IL-10 和 IL-13 的产生。化合物 4 还能减少巨噬细胞凋亡,增加这些细胞表面 CD206(甘露糖受体)的表达,同时减少 CD284(TLR-4 受体)的表达。最后,它还提高了吞噬能力,抑制了 NF-kβ 的 p65 的磷酸化。总之,被鉴定为二乙基-4-羟基-2-(4-甲氧基苯基)-4-甲基-6-氧代环己烷-1-3-二甲酸酯的化合物 4 显示出了显著的抗炎效果,同时还显示出了将巨噬细胞从 M1 表型(促炎)转化为 M2 表型(抗炎)的能力。由此我们推测,该分子抗炎作用的主要机制与其免疫调节能力有关。