Ontology highlight
ABSTRACT:
PROVIDER: PRJNA1105928 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR28842165_1.fastq.gz | Fastqsanger.gz | |||
| SRR28842165_2.fastq.gz | Fastqsanger.gz | |||
| SRR28842166_1.fastq.gz | Fastqsanger.gz | |||
| SRR28842166_2.fastq.gz | Fastqsanger.gz | |||
| SRR28842167_1.fastq.gz | Fastqsanger.gz |
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Project description:Myocardial ischemic preconditioning (IPC) enhances myocardial resilience to ischemic injury. Myocardial stunning is a transient, reversible dysfunction, while necrosis involves irreversible cell death. The relationship between IPC, stunning, and necrosis is not well understood, requiring further molecular investigation. This study aimed to investigate the proteomic changes associated with IPC, focusing on its relationship with myocardial stunning and necrosis. A novel 13.5-minute ischemia-reperfusion (I/R) rat model was specifically chosen to induce myocardial stunning, providing a unique approach to assess IPC effects in this context. Rats underwent either IPC with two 5-minute ischemia/reperfusion cycles followed by a 13.5-minute ischemic period or the procedure without IPC (no ischemic preconditioning, NIPC). Myocardial samples were collected at early (T1) and 4-hour post-reperfusion (T2) time points for proteomic analysis. Protein levels were quantified by differential labeling using TMTpro reagents, and subsequent liquid chromatography-mass spectrometry. IPC induced upregulation of proteins involved in endocytosis and Fc gamma R-mediated phagocytosis pathways at T1, while downregulating proteins related to tissue remodeling, immune response, and coagulation at T2. Conversely, NIPC exhibited upregulation of proteins associated with tissue damage and inflammation. IPC rats demonstrated enhanced leukocyte migration, complement activation, and immune response between T1 and T2. Consistent proteomic changes were observed between T1 and T2 in IPC vs. NIPC groups, and common alterations between IPC T2 vs. T1 and NIPC T2 vs. T1 comparisons underline shared pathways in cardiac complement and coagulation cascades. Our study reveals distinct proteomic changes induced by IPC in the context of myocardial stunning and necrosis. IPC activates early protective pathways, attenuates tissue damage and inflammation, and preserves myocardial function. These findings underscore IPC's reparative potential and identify myocardial stunning as an important, transient adaptation, which may have implications for supportive clinical management in I/R.
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Project description:ENL is an epigenetic acetylation reader and represents the most frequently mutated epigenetic regulator in Wilms tumor. In this study, we established an in vivo mouse model with the ENL hotspot mutation Enl-T1. Here we performed RNA sequencing (RNA-seq) analysis for human embryonuc kidney cell line HEK293 with ENL-WT, T1 or T2 to study the transcriptional changes induced by ENL mutations and whether those alterations can be rescued by treating the cells with the specific ENL inhibitor TDI-11055.
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Project description:We sequenced 12 ATAC-Seq lbraries from four biological replicates before (T1) and after the onset of maturation (T2, T3, T4) from liver. To characterise changes in chromatin state following long light initiation, we defined differentially accessible regions (DARs) where mapping counts differed significantly between T1 and other time points. This revealed a strong early remodelling in the chromatin state landscape, as most DARs were observed at T2 (n=1501) before decreasing in stepwise fashion at T3 (n=477) and T4. The majority of DARs (n=1036 or 57%) exhibit reduced accessibility at T2 compared with T1 and subsequently remained unchanged at later time points (Fig. 5a; Supplementary Figure S14). Similarly, regions that gained accessibility at T2 (n=696 or 38%) also remained unchanged at later timepoints. This left less than 10% of DARs (n=99) that displayed an oscillating pattern following the onset of the maturation. Together, this revealed the ATAC-seq signatures were predominantly stable chromatin state changes.
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Project description:Current strategies to assess donor kidney quality are based on clinical scores or require biopsies for histological assessment. Non-invasive strategies to identify and predict graft outcome at an early stage are therefore needed. Our aim was to evaluate the secretome in non-oxygenated hypothermic machine perfusion (HMP) perfusate of donation after brain death (DBD) kidneys by comparing proteomic profiles of good outcome (GO) and ¬suboptimal outcome (SO) 1-year post transplantation. Samples taken 15 minutes after start of HMP (T1) and before termination of HMP (T2) were analysed using liquid chromatography tandem mass spectrometry (LC MS/MS). Hierarchical clustering of the 100 most abundant proteins showed discrimination between grafts with a GO and SO at T1. Upregulated expression of proteins involved in classical complement activation at both T1 and T2, and downregulated expression lipid metabolism at T1 and of cytoskeletal proteins at T2 in GO vs. SO was observed. ATP-citrate synthase and fatty acid binding protein 5 (T1) and immunoglobulin heavy variable 2-26 and Desmoplakin (T2) showed 91% and 86% predictive values respectively for transplant outcome. This study shows that the secretome of DBD kidneys can distinguish between outcome 1-year post transplantation. Furthermore, it provides insights into mechanisms that could play a role in post- transplant outcomes.
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Project description:<p>BACKGROUND: In China, a majority of apple orchards were initially planted under arboriculture. Noteworthy, as the trees age, there is an increase in the number of branches and the degree of orchard depression and deterioration of the canopy light conditions. This phenomenon results in in blockage of bud differentiation, causing yield decrease and overall deterioration in fruit quality. Intercropping is an effective strategy for addressing the issue of orchard depression. However, the impact of intercropping on bud differentiation remains unclear. This study thus analyzed the physiological and metabolic aspects of flower bud differentiation after thinning and reshaping an overcrowded orchard. METHODS: A series of physiological and metabolomic analyses were conducted on terminal flower bud samples collected during early (T1) and late (T2) bud differentiation following thinning and reshaping alongside their controls CK1 and CK2. RESULTS: The T1 group had significantly higher amounts of sucrose, glucose, fructose and sorbitol compared to its control. Metabolomic analyses yielded 845 metabolites. Among these metabolites, 72 were significantly different in CK1 vs T1. In contrast, 73 metabolites were different in CK2 vs T2, while 26 metabolites were common between the two comparison groups. CK1 vs T1 and CK2 vs T2 had 20 and 16 enhanced metabolic pathways, respectively. Bud differentiation was closely associated with the phenylpropane and flavonoid biosynthesis pathways. CONCLUSIONS: Thinning and reshaping of the apple orchard improved light penetration and increased the content of coumarins and eriodictyol, thereby promoting flower bud differentiation. This study provides new insights into how orchard management practices, such as thinning, pruning and shaping, promote flower bud development in apple trees.</p>
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Project description:Unconditioned thoroughbred geldings were exercised to maximal heart rate or fatigue on an equine high-speed treadmill. Skeletal muscle biopsies were taken from the middle gluteal muscle before, immediately after and four hours after exercise. Three-condition experiment, Pre exercise (T0), Immediately post exercise (T1), 4 hours post exercise (T2). Hybridisations: T0 vs T1, T0 vs T2 Biological replicates: 8 Technical replication Dye swap
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