High-Throughput mRNA Sequencing Reveals Potential Therapeutic Targets of Febuxostat in Secondary Injury After Intracerebral Hemorrhage
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ABSTRACT: Febuxostat is a urate-lowering medication for the treatment of patients with gout. This study was performed to elucidate the effects and underlying mechanisms of febuxostat on neuronal injury induced by intracerebral hemorrhage (ICH) in mice. The results showed that the administration of febuxostat improved neurological severity scores and blood-brain barrier (BBB) permeability. Moreover, febuxostat attenuated neuronal cell death and cytokine levels compared with the ICH group. Next, we conducted a transcriptome analysis of the neuroprotective effects of febuxostat. The overlapping significant differentially expressed genes (DEGs) were identified. Gene ontology (GO) analysis revealed that the overlapping significant DEGs were most enriched in five items. The intersecting DEGs of the aforementioned five pathways were Wisp1, Wnt7b, Frzb, and Pitx2. In addition, GO terms and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathways revealed that DEGs were mainly involved in the wnt signaling pathway. Furthermore, the expression of Wisp1 and Wnt7b in the perihematomal region at 72 h post-ICH was observed. The results showed that both Wisp1 and Wnt7b were increased in the ICH group and were decreased by the administration of febuxostat. Taken together, the study showed that febuxostat protected against secondary brain injury after ICH and the Wnt7b-Wisp1 pathway was closely related to neuroprotective effects.
Project description:We show that intracerebroventricular administration of recombinant human cerebral dopamine neurotrophic factor (rhCDNF) accelerates hemorrhagic lesion resolution, reduces peri-focal edema, and improves neurological outcomes in an animal model of collagenase-induced ICH. We demonstrate that CDNF acts on microglia/macrophages in the hemorrhagic striatum by promoting scavenger receptor expression, enhancing erythrophagocytosis and increasing anti-inflammatory mediators while suppressing the production of pro-inflammatory cytokines. Administration of rhCDNF results in upregulation of the Nrf2-HO-1 pathway, but alleviation of oxidative stress and unfolded protein responses in the perihematomal area. Finally, we demonstrate that intravenous delivery of rhCDNF has beneficial effects in an animal model of ICH and that systemic application promotes scavenging by the brain’s myeloid cells for the treatment of ICH.
Project description:Spontaneous intracerebral hemorrhage (ICH) represents about 15% of all strokes and is associated with high mortality rates. Our aim was to identify the gene expression changes and biological pathways altered in the brain following ICH. Twelve brain samples were obtained from four deceased patients who suffered an ICH including perihematomal tissue (PH) and the corresponding contralateral white (CW) and grey (CG) matter. Brain samples from 4 deceased patients who had a supratentorial intracerebral hemorrhage within the previous 4 days were included in the microarray study. This study group included 2 women and 2 men with a median age of 79 (68-92). On autopsy and during macroscopic exam, perihematomal areas suspected to present edema were identified by an experienced neuropathologist using last available neuroradiology images. Samples from perihematomal areas (PH), contralateral grey matter (CG) and contralateral white matter (CW) were obtained within the first 5 h after death and snap frozen in liquid nitrogen and stored at -80ºC until RNA isolation.
Project description:Spontaneous intracerebral hemorrhage (ICH) represents about 15% of all strokes and is associated with high mortality rates. Our aim was to identify the gene expression changes and biological pathways altered in the brain following ICH. Twelve brain samples were obtained from four deceased patients who suffered an ICH including perihematomal tissue (PH) and the corresponding contralateral white (CW) and grey (CG) matter.
Project description:Edaravone dexborneol (EDB) is widely recognized for its anti-inflammatory and antioxidant properties and is clinically applied in the treatment of acute cerebral infarction. Ferroptosis is a critical process in the pathophysiology of brain injury following intracerebral hemorrhage (ICH). However, it remains unclear whether EDB can ameliorate ICH through the modulation of ferroptosis. This study aimed to evaluate the function and mechanism of EDB in treatment of ICH. With a rat ICH model, animal behavior tests, histopathological staining, magnetic resonance imaging and evans blue staining were used to evaluate the neural protective function of EDB on ICH rats. The potential molecular mechanism was investigated using RNA sequencing. With the administration of Fer-1, a range of ferroptosis-related biomarkers, including Fe2+, 4-hydroxynonenal, malondialdehyde, etc., were analyzed to to ascertain whether EDB confers neuroprotective effects through the modulation of P53/GPX4 pathways to inhibit ferroptosis. Finally, the findings were further corroborated using an in vitro ICH model with a P53 inhibitor. EDB has the potential to markedly enhance nerve and motor function, mitigate pathological damage, facilitate hematoma clearance, and repair BBB injury in ICH rats. KEGG analysis revealed that the differentially expressed genes were associated with signaling pathways, including P53 and ferroptosis. Both EDB and Fer-1 substantially reduced the concentrations of Fe2+, 4-hydroxynonenal, malondialdehyde, increased the amount of anti-oxidants, decreased the expression of P53, and concurrently upregulated the expression of GPX4. Besides, the P53 inhibitor PFT-α was observed to significantly reduce the levels of 4-HNE and lipid peroxides, while concurrently increasing the expression of GPX4. This investigation has shed light on the crucial neuroprotective role of EDB by regulating ferroptosis in ICH disease, which provided a theoretical basis for the clinical application of EDB in the treatment of ICH.
Project description:Intracerebral hemorrhage (ICH) is a severe neurological disorder with no proven treatment. Our prior research identified a significant association with monocyte level and ICH mortality. To further advance our understanding, we sought to identify the gene expression changes after ICH using a swine model to test the hypothesis that ICH would result in changes in peripheral blood mononuclear cell (PBMC) gene expression. There were 182 significantly upregulated and 153 significantly down-regulated DEGs after ICH. Consistent with findings in humans, significant GO and KEGG pathways were those primarily related to inflammation, immune response, and response to infectious pathogens. There were five genes, all with increased expression post-ICH, that were repeatedly identified as significant DEGs in the statistically significant KEGG pathways: CD14 (cluster of differentiation 14), TLR4 (toll-like receptor-4), CXCL8 (CXC motif chemokine-8), IL-18 (interleukin-18), and CXCL2 (CXC motif chemokine-2). Conclusion: ICH induced changes in PBMC gene expression within 6 hours of onset. DEGs that were highly expressed in the significant biological pathways included those related to inflammation, the immune response, and, more specifically, monocyte activation. Further research is needed to determine if these changes affect outcomes and may represent new therapeutic targets.
Project description:To investigate age-dependent transcriptomic changes between young or aged intracerebral hemorrhage mice, we established collagenase IV-induced intracerebral hemorrhage mice models. Intracerebral hemorrhage was induced by infusion of sterile collagenase IV in ipsilateral caudate putamen of brain. We then performed gene expression profiling analysis using data obtained from RNA-seq of brain perihematomal tissues from young or aged ICH mice 24 hours after intracerebral hemorrhage.
Project description:Tandem mass tag (TMT)-based proteomics was utilized to examine the protein expression profiles of perihematomal tissue from young and aged mouse models 24 hours after collagenase IV-induced ICH.
Project description:To investigate the effect of Pterostilbene(PTE) on gene expression after intracerebral hemorrhage injury, we employed RNA sequencing (RNA-seq) to profile the mRNA expression ensuing PTE treatment after ICH. Different gene distribution could be clearly seen on the volcano plot between diferent comparisions among Sham, ICH, and ICH+PTE group. Finally, we showed that 1021 shared genes overlapping between those differentially expressed genes, which was reversed by PTE treatment
Project description:Intracerebral hemorrhage (ICH) is a severe neurological disorder with no proven treatment. While there is substantial interest in post-ICH neuroinflammation and associated pathophysiological mechanisms, these processes remain poorly understood. To further advance our understanding, we performed RNA-seq in the peripheral blood of ICH patients to test the hypothesis that ICH would induce inflammatory biological pathways. 16,640 genes were identified and 216 were significant DEGs after ICH (FDR<0.1). IPA identified three canonical pathways as the most statistically significantly activated by ICH: colorectal cancer metastasis signaling (Z-score 3.00, P=1.71E-5), interleukin-8 (IL-8) signaling (3.00, 8.44E-5), and nuclear factor-kappa B (NF-kB) activation by viruses (2.55, 1.78E-4). Inflammatory mediators of particular relevance included IL-8, NF-kB, ERK 1/2, and the integrins β3, α2b, and β5. Conclusion: ICH induced peripheral blood gene expression at 72 to 96 hours compared with 0 to 24 hours from symptom onset. DEGs that were highly expressed in the significant biological pathways included those related to inflammation and activation of the immune response. Further research is needed to determine if these changes affect outcomes and may represent new therapeutic targets.