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Total 296 results found since Jan 2013.
The Upregulation of miR-22 alleviates oxygen-glucose deprivation/reperfusion-induced injury by targeting Tiam1 in SH-SY5Y cells
In this study, we evaluated whether miR-22 participates in I/R-induced neuronal injury and the potential mechanism by using an oxygen-glucose deprivation/reperfusion (OGD/R) model in vitro. Our results showed that miR-22 was significantly down-regulated in SH-SY5Y cells suffering from OGD/R. Up-regulation of miR-22 by its specific mimic could protect SH-SY5Y cells against OGD/R-induced injury. The luciferase reporter assay demonstrated that T-cell lymphoma invasion and metastasis 1 (Tiam1) was a direct target of miR-22. MiR-22 mimic obviously inhibited Tiam1 expression in OGD/R-exposed SH-SY5Y cells. Tiam1 siRNA could atte...
Source: Acta Biochim Pol - September 6, 2023 Category: Biochemistry Authors: Jiansong Yin Yu Wan Jing Wang Mei Xue Source Type: research
Chinese giant salamander Bcl-w: An inhibitory role in iridovirus-induced mitochondrial apoptosis and virus replication
In this study, we characterized for the first time an amphibian Bcl-w from Chinese giant salamander Andrias davidianus (AdBcl-w), and its function and regulatory mechanism during GSIV infection were investigated. AdBcl-w possesses the conserved structural features of Bcl-w and shares 35-54% sequence identities with other Bcl-w. mRNA expression of AdBcl-w was most abundant in liver and muscle. The AdBcl-w mRNA expression was regulated during GSIV infection. Western blotting assays revealed that the level of Bcl-w protein was downregulated markedly as the infection progresses. Confocal microscopy showed that overexpressed Ad...
Source: Virus Research - August 19, 2023 Category: Virology Authors: Yiqun Li Mingyang Xue Yanlin Dai Yixing Xie Ying Wei Cheng Wang Mingzhu Tian Yuding Fan Nan Jiang Chen Xu Wenzhi Liu Yan Meng Yong Zhou Source Type: research
Chinese Giant Salamander Bcl-w:An Inhibitory Role in Iridovirus-Induced Mitochondrial Apoptosis and Virus Replication
In this study, we characterized for the first time an amphibian Bcl-w from Chinese giant salamander Andrias davidianus (AdBcl-w), and its function and regulatory mechanism during GSIV infection were investigated. AdBcl-w possesses the conserved structural features of Bcl-w and shares 35% - 54% sequence identities with other Bcl-w. mRNA expression of AdBcl-w was most abundant in liver and muscle. The AdBcl-w mRNA expression was regulated during GSIV infection. Western blotting assays revealed that the level of Bcl-w protein was downregulated markedly as the infection progresses. Confocal microscopy showed that overexpressed...
Source: Virus Research - August 19, 2023 Category: Virology Authors: Yiqun Li Mingyang Xue Yanlin Dai Yixing Xie Ying Wei Cheng Wang Mingzhu Tian Yuding Fan Nan Jiang Chen Xu Wenzhi Liu Yan Meng Yong Zhou Source Type: research
ROS and DRP1 interactions accelerate the mitochondrial injury induced by polystyrene nanoplastics in human liver HepG2 cells
Chem Biol Interact. 2023 Apr 19:110502. doi: 10.1016/j.cbi.2023.110502. Online ahead of print.ABSTRACTMicroplastics have become a serious environmental pollutant and subsequently have harmful effects on human health. Thus, the impacts of microplastics on human cells need to be explored. In the present study, the cytotoxic effects at the subcellular-organelle levels to polystyrene nanoplastics (PS-NPs, diameter 21.5 ± 2.7 nm) were investigated in the human hepatocellular carcinoma (HepG2) cell line. The cell viability exposed to PS-NPs at the concentrations of 6.25, 12.5, 25 and 50 μg/mL for 24 h diminished in a concentra...
Source: Chemico-Biological Interactions - April 21, 2023 Category: Molecular Biology Authors: Yunjing Li Menghao Guo Shuyan Niu Mengting Shang Xiaoru Chang Zuoyi Sun Rui Zhang Xin Shen Yuying Xue Source Type: research
The Weakened Interaction Between HECTD4 and GluN2B in Ischemic Stroke Promotes Calcium Overload and Brain Injury Through a Mechanism Involving the Decrease of GluN2B and MALT1 Ubiquitination
This study explores the relationship between HECTD4, GluN2B, and MALT1, focusing on their role in brain injury in ischemic stroke. Rats were subjected to 2 h-ischemia followed by 24-h reperfusion to establish an ischemic stroke model. We observed the downregulation of HECTD4 and the upregulation of MALT1. Additionally, an increased GluN2B phosphorylation was concomitant with weakened interactions between HECTD4 and GluN2B, followed by decreased stria tal-enriched protein phosphatase (STEP61). Knockdown of HECTD4 exacerbated hypoxia- or NMDA-induced injury in nerve cells coincident with a decrease in GluN2B and MALT1 ubiq...
Source: Molecular Neurobiology - March 1, 2023 Category: Neurology Source Type: research
CC1007, a small molecular compound, suppresses multiple myeloma via upregulation of Nur77
CONCLUSIONS: Since CC1007 demonstrates remarkable anti-MM effect on MM cells, it may be a promising drug for the treatment of MM.PMID:36283176 | DOI:10.1016/j.bioorg.2022.106217
Source: Bioorganic Chemistry - October 25, 2022 Category: Chemistry Authors: Shicong Zhu Cheng Xing Guangsen Zhang Hongling Peng Zhihua Wang Source Type: research
Cornin protects against cerebral ischemia/reperfusion injury by preventing autophagy via the PI3K/Akt/mTOR pathway
CONCLUSIONS: These results indicate that cornin improved neurological recovery after cerebral ischemia injury by preventing astrocytes autophagy induced by CI/R via the PI3K/Akt/mTOR signaling pathway.PMID:36280856 | DOI:10.1186/s40360-022-00620-3
Source: BMC Pharmacology and Toxicology - October 25, 2022 Category: Drugs & Pharmacology Authors: Tianchi Lan Yangyang Xu Shucui Li Ning Li Shuping Zhang Haibo Zhu Source Type: research
Melatonin alleviates arginine vasopressin-induced cardiomyocyte apoptosis via increasing Mst1-Nrf2 pathway activity to reduce oxidative stress
In this study, high AVP doses were found to induce H9c2 cardiomyoblast apoptosis, demonstrated by increased terminal deoxynucleotidyl transferase dUTP nick end labeling (TUNEL)-positive cells, pro-apoptotic B-cell lymphoma-2 (Bcl-2)-associated X protein (Bax) up-regulation, and anti-apoptotic Bcl-2 downregulation. This AVP-induced apoptotic increase, along with lowered cell viability, was also associated with higher reactive oxygen species (ROS) levels and lowered mitochondrial membrane potentials (MMP), which were all reversed upon Mel administration. Further investigations found that apoptosis, ROS, and MMP outcomes unde...
Source: Biochemical Pharmacology - October 2, 2022 Category: Drugs & Pharmacology Authors: Shuang Chen You Li Shuai Fu Yang Li Chao Wang Ping Sun Hairu Li Jiawei Tian Guo-Qing Du Source Type: research
