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Phoenixin-14 protects human brain vascular endothelial cells against oxygen-glucose deprivation/reoxygenation (OGD/R)-induced inflammation and permeability.
Archives of Biochemistry and Biophysics ( IF 3.8 ) Pub Date : 2020-01-18 , DOI: 10.1016/j.abb.2020.108275
Benping Zhang 1 , Jiebing Li 2
Affiliation  

Stroke is one of the world's most deadly pathologies, and the rate of stroke recurrence is high. However, due to the complex nature of ischemia and reperfusion injury, there is presently no reliable treatment. The main factors driving brain damage from ischemic stroke are neuronal cell death resulting from oxidative stress, inflammation, and failure of the blood brain barrier. While under normal conditions, the blood brain barrier acts as a selectively permeable membrane allowing solutes and other substances to pass into the tissues of the central nervous system, ischemia and reperfusion alter the expression of tight junction proteins such as occludin, which leads to unmitigated perfusion and loss of homeostasis. Phoenixin-14 is a 14-amino acid neuropeptide that has been shown to play a role in regulating reproduction, blood sugar metabolism, pain, anxiety, and more recently, certain aspects of ischemic cardiac injury. In the present study, we found that phoenixin-14 confers protective effects against oxygen-glucose deprivation/reoxygenation (OGD/R) injury in bEnd.3 brain endothelial cells. Phoenixin-14 attenuated oxidative stress via downregulation of ROS and NOX1 and inhibited HMGB1 expression. Additionally, phoenixin-14 increased the expression of eNOS and NO, which play a protective role. Phoenixin-14 reduced endothelial monolayer permeability by increasing the expression of occludin. Finally, we found that the effects of phoenixin-14 on the expression of eNOS and occludin are dependent on the KLF2 transcriptional pathway, as evidenced by the results of our KLF2 knockdown experiment. Thus, phoenixin-14 may serve as a novel therapeutic agent for ischemic stroke.



中文翻译:

Phoenixin-14保护人脑血管内皮细胞免受氧葡萄糖剥夺/复氧(OGD / R)诱导的炎症和通透性的影响。

中风是世界上最致命的疾病之一,中风复发率很高。然而,由于局部缺血和再灌注损伤的复杂性,目前尚无可靠的治疗方法。导致缺血性中风导致脑损伤的主要因素是氧化应激,炎症和血脑屏障功能衰竭导致的神经元细胞死亡。在正常情况下,血脑屏障起选择性渗透膜的作用,使溶质和其他物质进入中枢神经系统组织,局部缺血和再灌注会改变紧密连接蛋白(例如闭合蛋白)的表达,从而导致无减轻的灌注和失去稳态。Phoenixin-14是一种14个氨基酸的神经肽,已被证明在调节生殖,血糖代谢,疼痛,焦虑症,以及最近出现的局部缺血性心脏损伤的某些方面。在本研究中,我们发现phoenixin-14赋予bEnd.3脑内皮细胞抗氧葡萄糖剥夺/复氧(OGD / R)损伤的保护作用。Phoenixin-14通过下调ROS和NOX1减轻氧化应激,并抑制HMGB1表达。此外,phoenixin-14增加了eNOS和NO的表达,起到了保护作用。Phoenixin-14通过增加occludin的表达降低内皮单层通透性。最后,我们发现phoenixin-14对eNOS和occludin表达的影响取决于KLF2转录途径,这一点已通过我们的KLF2敲低实验的结果得到证明。因此,phoenixin-14可以作为缺血性中风的新型治疗剂。最近,缺血性心脏损伤的某些方面。在本研究中,我们发现phoenixin-14赋予bEnd.3脑内皮细胞抗氧葡萄糖剥夺/复氧(OGD / R)损伤的保护作用。Phoenixin-14通过下调ROS和NOX1减轻氧化应激,并抑制HMGB1表达。此外,phoenixin-14增加了eNOS和NO的表达,起到了保护作用。Phoenixin-14通过增加occludin的表达降低内皮单层通透性。最后,我们发现phoenixin-14对eNOS和occludin表达的影响取决于KLF2转录途径,这一点已通过我们的KLF2敲低实验的结果得到证明。因此,phoenixin-14可以作为缺血性中风的新型治疗剂。最近,缺血性心脏损伤的某些方面。在本研究中,我们发现phoenixin-14赋予bEnd.3脑内皮细胞抗氧葡萄糖剥夺/复氧(OGD / R)损伤的保护作用。Phoenixin-14通过下调ROS和NOX1减轻氧化应激,并抑制HMGB1表达。此外,phoenixin-14增加了eNOS和NO的表达,起到了保护作用。Phoenixin-14通过增加occludin的表达降低内皮单层通透性。最后,我们发现phoenixin-14对eNOS和occludin表达的影响取决于KLF2转录途径,这一点已通过我们的KLF2敲低实验的结果得到证明。因此,phoenixin-14可以作为缺血性中风的新型治疗剂。缺血性心脏损伤的某些方面。在本研究中,我们发现phoenixin-14赋予bEnd.3脑内皮细胞抗氧葡萄糖剥夺/复氧(OGD / R)损伤的保护作用。Phoenixin-14通过下调ROS和NOX1减轻氧化应激,并抑制HMGB1表达。此外,phoenixin-14增加了eNOS和NO的表达,起到了保护作用。Phoenixin-14通过增加occludin的表达降低内皮单层通透性。最后,我们发现phoenixin-14对eNOS和occludin表达的影响取决于KLF2转录途径,这一点已通过我们的KLF2敲低实验的结果得到证明。因此,phoenixin-14可以作为缺血性中风的新型治疗剂。缺血性心脏损伤的某些方面。在本研究中,我们发现phoenixin-14赋予bEnd.3脑内皮细胞抗氧葡萄糖剥夺/复氧(OGD / R)损伤的保护作用。Phoenixin-14通过下调ROS和NOX1减轻氧化应激,并抑制HMGB1表达。此外,phoenixin-14增加了eNOS和NO的表达,起到了保护作用。Phoenixin-14通过增加occludin的表达降低内皮单层通透性。最后,我们发现phoenixin-14对eNOS和occludin表达的影响取决于KLF2转录途径,这一点已通过我们的KLF2敲低实验的结果得到证明。因此,phoenixin-14可以作为缺血性中风的新型治疗剂。我们发现phoenixin-14赋予bEnd.3脑内皮细胞抗氧葡萄糖剥夺/复氧(OGD / R)损伤的保护作用。Phoenixin-14通过下调ROS和NOX1减轻氧化应激,并抑制HMGB1表达。此外,phoenixin-14增加了eNOS和NO的表达,起到了保护作用。Phoenixin-14通过增加occludin的表达降低内皮单层通透性。最后,我们发现phoenixin-14对eNOS和occludin表达的影响取决于KLF2转录途径,这一点已通过我们的KLF2敲低实验的结果得到证明。因此,phoenixin-14可以作为缺血性中风的新型治疗剂。我们发现phoenixin-14赋予bEnd.3脑内皮细胞抗氧葡萄糖剥夺/复氧(OGD / R)损伤的保护作用。Phoenixin-14通过下调ROS和NOX1减轻氧化应激,并抑制HMGB1表达。此外,phoenixin-14增加了eNOS和NO的表达,起到了保护作用。Phoenixin-14通过增加occludin的表达降低内皮单层通透性。最后,我们发现phoenixin-14对eNOS和occludin表达的影响取决于KLF2转录途径,这一点已通过我们的KLF2敲低实验的结果得到证明。因此,phoenixin-14可以作为缺血性中风的新型治疗剂。3脑内皮细胞。Phoenixin-14通过下调ROS和NOX1减轻氧化应激,并抑制HMGB1表达。此外,phoenixin-14增加了eNOS和NO的表达,起到了保护作用。Phoenixin-14通过增加occludin的表达降低内皮单层通透性。最后,我们发现phoenixin-14对eNOS和occludin表达的影响取决于KLF2转录途径,这一点已通过我们的KLF2敲低实验的结果得到证明。因此,phoenixin-14可以作为缺血性中风的新型治疗剂。3脑内皮细胞。Phoenixin-14通过下调ROS和NOX1减轻氧化应激,并抑制HMGB1表达。此外,phoenixin-14增加了eNOS和NO的表达,起到了保护作用。Phoenixin-14通过增加occludin的表达降低内皮单层通透性。最后,我们发现phoenixin-14对eNOS和occludin表达的影响取决于KLF2转录途径,这一点已通过我们的KLF2敲低实验的结果得到证明。因此,phoenixin-14可以作为缺血性中风的新型治疗剂。Phoenixin-14通过增加occludin的表达降低内皮单层通透性。最终,我们发现phoenixin-14对eNOS和occludin表达的影响取决于KLF2转录途径,这由我们的KLF2敲低实验的结果证明。因此,phoenixin-14可以作为缺血性中风的新型治疗剂。Phoenixin-14通过增加occludin的表达降低内皮单层通透性。最后,我们发现phoenixin-14对eNOS和occludin表达的影响取决于KLF2转录途径,这一点已通过我们的KLF2敲低实验的结果得到证明。因此,phoenixin-14可以作为缺血性中风的新型治疗剂。

更新日期:2020-01-21
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