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In-depth transcriptomic and proteomic analyses of the hippocampus and cortex in a rat model after cerebral ischemic injury and repair by Shuxuetong (SXT) injection.

Abstract：

BACKGROUND:There is a lack of systematic descriptions and characterization of strokes and their effects in both the cerebral hippocampus and cortex. Shuxuetong (SXT) injection was reported to have good therapeutic effects in the clinic; therefore, it was selected as a drug intervention method for cerebral ischemia repair in rat models. The aim of this study was to understand the features of molecules and pathways and to reveal key processes of SXT repair. MATERIALS AND METHODS:Evaluation of neurological deficit and infarct volume measurement was used to estimate the pharmacological effects of SXT injection on Ischemia-reperfusion(I/R) model rats. LC-MS/MS and RNA-Seq analysis were used to analyze the proteins and mRNA expression in the cerebral hippocampus and cortex 6 h and 24 h after ischemic injury and repair. A label-free approach (IBAQ) for proteomics analysis and FPKM based on gene read count for transcriptomics analysis were used to quantify the differences among the three experimental groups (Sham, Model and SXT-treated groups). Transcriptomics and proteomics analyses were verified by RT-qPCR and western blotting. RESULTS:By combining LC-MS/MS and RNA-Seq, eight larger datasets (two time points and two tissues) were confidently identified in more than three biological replicates. An average of 4500 unique proteins and 8200 protein-coding genes were confidently identified. By combining the subcellular localization, hierarchical clustering, pathway enrichment analysis in the injury and repair phase, six core proteins and related genes that were significantly expressed were verified as candidates for cerebral ischemic injury by western blotting and quantitative real-time PCR. Meanwhile, the results indicated that there was better expression in the 6 h group by significant proteomics analysis during the development and progression of cerebral ischemia. Two primary co-enriched pathways, the PI3K-AKT and MAPK signaling pathways, and six related core candidates may play key roles in molecular mechanisms related to cerebral ischemic injury and repair by SXT injection. CONCLUSION:Our data not only identified six core candidates and two key signaling pathways for cerebral ischemic injury and verification but also provided evidence for the explanation, prevention and treatment of cerebral ischemia by SXT injection. The results of the present study provide evidence for the explanation, prevention and treatment of cerebral ischemia by SXT injection.

journal_name

J Ethnopharmacol

journal_title

Journal of ethnopharmacology

authors

Liu X,Qing Wang,Cui Y,Li X,Yang H

doi

10.1016/j.jep.2019.112362

subject

Has Abstract

pub_date

2020-03-01 00:00:00

pages

112362

eissn

0378-8741

issn

1872-7573

pii

S0378-8741(19)32261-5

journal_volume

249

pub_type

杂志文章

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In-depth transcriptomic and proteomic analyses of the hippocampus and cortex in a rat model after cerebral ischemic injury and repair by Shuxuetong (SXT) injection.