Transcription in ischemic stroke – reperfused mice – Transition database

Introduction


Stroke remains a leading cause of death and disabilities worldwide. Furthermore, every fourth adult will be injured by stroke in their lifetime, emphasizing the critical need for comprehensive research into its mechanisms and potential treatments. Ischemic stroke is characterized by the abrupt interruption of cerebral blood flow and, in particular, inflicts profound damage, including cell death and intricate alterations within the brain's structure and function.


Here, we have investigated a murine (C57BL/6JR male mice) model of filament-induced ischemic stroke, followed by spatial gene expression profiling (10X Genomics) at the acute phase (24 hours) of reperfusion.


Our database encompasses a comprehensive analysis of gene expression alterations, with a specific focus on delineating the intricate responses driving stroke pathology and recovery. Through this platform, we endeavor to provide valuable contributions to the complex interplay between genetics and stroke pathology, ultimately contributing to developing novel therapeutic strategies.




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Gene Summary


            

Differential expressed genes between the two hemispheres

* Wilcoxon Rank Sum test were used to identify differentially expressed genes between two groups of cells
* pct: The percentage of cells where the gene detected in the group
* avg_log2FC: log fold-chage of the average expression between the two groups.
* p_val_adj: Adjusted p-value, based on bonferroni correction using all genes in the dataset

Spatial gene expression: Spatial plot

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Spatial geneset score: Spatial plot

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Spot information vs gene expression on reduced dimensions

In this tab, users can visualise both Spot information and gene expression side-by-side on low-dimensional representions.

Dimension Reduction

Spot information

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Spot numbers / statistics

Gene expression

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Spot information vs Spot information on dimension reduction

In this tab, users can visualise two Spot informations side-by-side on low-dimensional representions.

Dimension Reduction

Spot information 1

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Spot information 2

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Gene expression vs gene expression on dimension reduction

In this tab, users can visualise two gene expressions side-by-side on low-dimensional representions.

Dimension Reduction

Gene expression 1

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Gene expression 2

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Coexpression of two genes on reduced dimensions

In this tab, users can visualise the coexpression of two genes on low-dimensional representions.

Dimension Reduction

Gene Expression

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Spot information / gene expression violin plot / box plot

In this tab, users can visualise the gene expression or continuous Spot information (e.g. Number of UMIs / module score) across groups of Spots (e.g. libary / clusters).



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Proportion / Spot numbers across different Spot information

In this tab, users can visualise the composition of single Spots based on one discrete Spot information across another discrete Spot information. Usage examples include the library or cellcycle composition across clusters.



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Gene expression bubbleplot / heatmap

In this tab, users can visualise the gene expression patterns of multiple genes grouped by categorical Spot information (e.g. library / cluster).
The normalised expression are averaged, log-transformed and then plotted.




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GeneSet Score violin plot / box plot

In this tab, users can visualise a total of 24604 GeneSet score from MsigDB across groups of Spots (e.g. libary / clusters).



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Corresponding authors:

Vladimir V. Matchkov: vvm@biomed.au.dk

Line Mathilde Brostrup Hansen: line.mb.hansen@biomed.au.dk

Department of Biomedicine, Aarhus University, Denmark




Database:

Copyright 2022 Steno Diabetes Center Aarhus (SDCA); Aarhus University

Created by DREAMlab, Department of Biomedicine, Aarhus University

Get in touch with us: lin.lin@biomed.au.dk