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Structural characterization of Mesobuthus martensii Karsch peptides and anti-inflammatory potency evaluation in human vascular endothelial cells

机译:马氏肉芽孢杆菌Karsch肽的结构表征和在人血管内皮细胞中的抗炎能力评估

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Studies have reported that scorpion toxins have excellent anti-cancer effects; however, the anti-inflammatory activity of scorpion peptides has rarely been studied. Here, a series of Mesobuthus martensii Karsch peptides (MMKPs) were isolated and the amino acid sequence was identified. The MMKPs mitigated TNF-α-mediated inflammation in human umbilical vein endothelial cells (HUVECs). The results showed that MMKP-1 (His-Glu-Gly-His) treatment (43.0 μM) significantly attenuated the reactive oxygen species (ROS) generation and mitochondrial membrane potential collapse in HUVECs. Moreover, MMKP-1 down-regulated the intercellular adhesion molecule-1 (ICAM-1) and vascular cell adhesion molecule-1 (VCAM-1) expressions and blocked the NF-κB pathway to alleviate the damage caused by TNF-α. Of note, our study provides a good reference for the anti-inflammation research on scorpion oligopeptides.
机译:研究报告称蝎子毒素具有出色的抗癌作用。然而,很少研究蝎子肽的抗炎活性。在这里,分离了一系列的马氏肉so(Mesobuthus martensii Karsch)肽(MMKPs)并鉴定了氨基酸序列。 MMKP减轻了人脐静脉内皮细胞(HUVEC)中TNF-α介导的炎症。结果表明,MMKP-1(His-Glu-Gly-His)处理(43.0μM)显着减弱了HUVEC中的活性氧(ROS)生成和线粒体膜电位塌陷。此外,MMKP-1下调细胞间粘附分子1(ICAM-1)和血管细胞粘附分子1(VCAM-1)的表达,并阻断NF-κB通路以减轻TNF-α引起的损伤。值得注意的是,我们的研究为蝎子寡肽的抗炎研究提供了很好的参考。

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