Discovery of Novel Orally Active Tetrahydro-Naphthyl-N-Acylhydrazones with In Vivo Anti-TNF-α Effect and Remarkable Anti-Inflammatory Properties
作者:Natália M. Cordeiro、Rosana H. C. N. Freitas、Carlos A. M. Fraga、Patricia D. Fernandes
DOI:10.1371/journal.pone.0156271
日期:——
LASSBio-1524 was designed as inhibitor of the IKK-β (kappa β kinase inhibitor) enzyme, which participates in the activation of the nuclear factor κB (NF-κB) canonical pathway, and its three N-acylhydrazone new analogues, LASSBio-1760, LASSBio-1763 and LASSBio-1764 are now being tested on their anti-inflammatory potential. The activity of these compounds was evaluated with the subcutaneous air pouch induced by carrageenan and by subsequent measurement of tumor necrosis factor-α (TNF-α), nitric oxide (NO) and reactive oxygen species (ROS). In the acute inflammation model, the oral pretreatment with doses from 0.3 to 30 mg/kg of N-acylhydrazone derivatives was able to significantly reduce leukocyte migration to the cavity. Pretreatment with LASSBio-1524 and its analogues also decreased NO, TNF-α and ROS biosynthesis an events closely involved with NF-kB pathway. The tetrahydronaphthyl-N-acylhydrazone derivative LASSBio-1764 was the most promising compound from this series, surpassing even LASSBio-1524. Additionally, none of the compounds demonstrated myelotoxicity or cytotoxicity. Cell viability was assayed and these compounds demonstrated to be safe at different concentrations. Western blot analysis demonstrated that LASSBio-1524 and LASSBio-1760 inhibited NF-κB expression in RAW 264.7 cell lineage. Our data indicate that the tested compounds have anti-inflammatory activity, which may be related to inhibition of leukocyte migration, reducing the production of NO, TNF-α and ROS. LASSBio-1524 and LASSBio-1760, in addition to these features, also reduced p65 nuclear expression assessed by western blot in RAW 264.7 murine cells.
LASSBio-1524 被设计为 IKK-β(κ β 激酶抑制剂)酶的抑制剂,该酶参与核因子 κB (NF-κB) 经典途径的激活,及其三种 N-酰腙新类似物 LASSBio-1760 、LASSBio-1763 和 LASSBio-1764 目前正在测试其抗炎潜力。通过角叉菜胶诱导的皮下气囊以及随后测量肿瘤坏死因子-α (TNF-α)、一氧化氮 (NO) 和活性氧 (ROS) 来评估这些化合物的活性。在急性炎症模型中,口服0.3至30 mg/kg N-酰腙衍生物剂量的预处理能够显着减少白细胞向腔内的迁移。 LASSBio-1524 及其类似物预处理还降低了与 NF-kB 通路密切相关的 NO、TNF-α 和 ROS 生物合成。四氢萘基-N-酰腙衍生物LASSBio-1764是该系列中最有前途的化合物,甚至超过了LASSBio-1524。此外,这些化合物均未表现出骨髓毒性或细胞毒性。对细胞活力进行了测定,并证明这些化合物在不同浓度下都是安全的。蛋白质印迹分析表明,LASSBio-1524 和 LASSBio-1760 抑制 RAW 264.7 细胞谱系中 NF-κB 的表达。我们的数据表明,测试的化合物具有抗炎活性,这可能与抑制白细胞迁移,减少NO、TNF-α和ROS的产生有关。除了这些功能外,LASSBio-1524 和 LASSBio-1760 还降低了 RAW 264.7 小鼠细胞中通过蛋白质印迹评估的 p65 核表达。