[关键词]
[摘要]
目的 合成肉桂酸类似物,考察其抗糖尿病活性及作用机制。方法 以不同取代的苯甲醛为原料,以乙酸钾为催化剂,通过 Perkin 反应与乙酸酐反应,合成肉桂酸类似物,并测试其在棕榈酸(PA)诱导下对胰岛 β 细胞的保护作用,同时探究优势化合物抗糖尿病的作用机制。结果 10 个目标化合物对胰岛 β 细胞有不同程度的保护作用,化合物 RG-1 和 RG-4 的细胞保护作用较强,细胞存活率分别为 97.19% 和 89.68%。药理研究显示,化合物 RG-1 和 RG-4 可以减少细胞内活性氧的生成,抑制硫氧还蛋白互作蛋白(TXNIP)的表达,同时可以使丙二醛(MDA)含量下降,超氧化物歧化酶(SOD)活性升高,半胱天冬酶 3(caspase 3)活性下降。此外,RG-1 和 RG-4 表现出良好的药代动力学性质。结论 该研究合成了 10 个肉桂酸类似物(RG-1~RG-10),其中RG-1 和 RG-4 对胰岛 β 细胞的保护作用较强,其可通过抑制氧化应激发挥对胰岛 β 细胞的保护作用,是潜在的抗糖尿病小分子化合物。
[Key word]
[Abstract]
Objective To synthesize cinnamic acid analogues and investigate their anti-diabetic activity and mechanism. Methods With different substituted benzaldehyde and acetic anhydride as raw material,potassium acetate as catalyst,cinnamic acid analogues were synthesized through Perkin reaction. Then,their protective effects on islet β cells were tested under the stimulation of palmitic acid (PA). Furthermore, the anti-diabetic mechanism of the dominant compounds was explored. Results Ten target compounds showed varying degrees of protection against islet β cells,and compounds RG-1 and RG-4 exhibited strong cytoprotection. The cell survival rate was 97.19% and 89.68%,respectively. Molecular mechanism studies showed that compounds RG-1 and RG-4 could reduce the generation of intracellular reactive oxygen species, inhibit the expression of thioredoxin-interacting protein (TXNIP) protein,decrease malondialdehyde (MDA) content and cysteine aspartase 3 (caspase 3) activity, as well as increase superoxide dismutase (SOD) activity. Furthermore,RG-1 and RG-4 exhibited favorable pharmacokinetic properties. Conclusion A total of 10 cinnamic acid analogues (RG1~RG10) were synthesized in this study. RG-1 and RG-4 exerted strong protective effects on islet β cells by inhibiting oxidative stress. RG-1 and RG-4 are potential anti-diabetic molecules.
[中图分类号]
R914.5;R285.5
[基金项目]
陕西省科技厅项目(2023-JC-QN-0827);西安市科协青年人才托举项目(959202413082);西安医学院科技创新团队配套项目(2021TDPT04);山西省高等教育“百亿工程”科技引导专项(BYJL054);西安医学院2022年度科研能力提升计划项目(2022NLTS075);西安医学院大学生创新创业项目(121524024)