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EV-derived miR-186-5p alleviates APAP-induced liver injury by the suppression of CXCL1

ABSTRACT: EV-derived miR-186-5p alleviates APAP-induced liver injury by the suppression of CXCL1

PROVIDER: PRJNA1058487 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR27373572_1.fastq.gz	Fastqsanger.gz
	SRR27373572_2.fastq.gz	Fastqsanger.gz
	SRR27373573_1.fastq.gz	Fastqsanger.gz
	SRR27373573_2.fastq.gz	Fastqsanger.gz
	SRR27373574_1.fastq.gz	Fastqsanger.gz

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EV-derived miR-186-5p alleviates APAP-induced liver injury by the suppression of CXCL1

Project description:Acetaminophen (APAP) overdose is the major cause of drug-induced liver injury (DILI) and acute liver failure (ALF), and patients with advanced APAP toxicity rarely benefit from N-acetylcysteine (NAC), which is the first-line agent used in the clinic. Mesenchymal stromal cells (MSCs) and their extracellular vesicles (MSC-EVs) have shown promising effects in the treatment of DILI by decreasing neutrophil infiltration. However, the specific mechanism underlying the therapeutic effects of MSCs or MSC-EVs still needs to be elucidated. In this study, by using RNA-seq, we found that CXCL1, which is a chemoattractant for neutrophils, is a key molecule in MSC-mediated amelioration of DILI, and by luciferase reporter assay, we verified that MSC-EV-derived miR-186-5p binds to the 3’-UTR of CXCL1 to inhibit its expression in hepatocytes. Neutralizing CXCL1 reduces APAP-induced liver damage in vivo, and the agomir miR-186-5p shows excellent potential in the treatment of DILI. Overall, these findings suggest that the use of MSC-EVs may be a promising novel strategy for preventing DILI and that targeting the miR-186-5P/CXCL1 axis is a feasible approach for improving the efficacy of MSCs in the treatment of DILI.

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RNAseq on APAP, APAP+MSC, APAP+HDF at 24h

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RNAseq on APAP, APAP+MSC, APAP+HDF at 24h

Project description:RNAseq of liver homogenate 24h after APAP (300mg/kg) exposure followed by either MSC or HDF at 90 min. MSCs, not HDFs, ameliorate APAP-induced liver injury.

2022-09-16 | GSE198277 | GEO

RNAseq on Human APAP-ALF

Project description:Fifty percent of all acute liver failure (ALF) cases in the United States are due to acetaminophen (APAP) overdose. Assessment of canonical features of liver injury, such as plasma alanine aminotransferase activities are poor predictors of acute liver failure (ALF), suggesting the involvement of additional mechanisms independent of hepatocyte death. Previous work demonstrated a severe overdose of APAP results in impaired regeneration, the induction of senescence by p21, and increased mortality. We hypothesized that a discrete population of p21+ hepatocytes acquired a secretory phenotype that directly impedes liver recovery after a severe APAP overdose. Leveraging in-house human APAP explant liver and publicly available singlenuclei RNAseq data, we identified a subpopulation of p21+ hepatocytes enriched in a unique secretome of factors, such as Cxcl14. Spatial transcriptomics in the mouse model of APAP overdose confirmed the presence of a p21+ hepatocyte population that directly surrounded the necrotic areas. In both male and female mice, we found a dose-dependent induction of p21 and persistent circulating levels of the p21-specific constituent, Cxcl14, in the plasma after a severe APAP overdose. In parallel experiments, we targeted either the putative senescent hepatocytes with the senolytic drugs, dasatinib and quercetin, or Cxcl14 with a neutralizing antibody. We found that targeting Cxcl14 greatly enhanced liver recovery after APAP-induced liver injury, while targeting the senescent hepatocyte had no effect. This data supports that the sustained induction of p21 in hepatocytes with persistent Cxcl14 secretion are critical mechanistic events leading to ALF in mice and human patients.

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SNHG1-miR-186-5p-YY1 feedback loop alleviates hepatic ischemia/reperfusion injury.

Project description:As a common cause of liver injury, hepatic ischemia/reperfusion injury (HIRI) happens in various clinical conditions including trauma, hepatectomy and liver transplantation. Since transcription factor Yin Yang 1 (YY1) was reported to be downregulated after ischemia/reperfusion (I/R) injury, we focused on YY1 to explore its function in HIRI by functional assays like Cell Counting Kit-8 (CCK-8) assays and flow cytometry assays. The RT-qPCR assay revealed that YY1 was downregulated in hepatocytes after I/R injury. The function assays disclosed that YY1 facilitated cell viability and proliferation, but hindered cell apoptosis in hepatocytes after I/R injury. Through mechanism assays including luciferase reporter assay, RIP and RNA pulldown assay, miR-186-5p was found to bind with YY1 and promote hepatocyte apoptosis by targeting YY1. Subsequently, we verified that small nucleolar RNA host gene 1 (SNHG1) could sponge miR-186-5p to upregulate YY1. Importantly, we figured out that YY1 had a positive regulation on SNHG1. Along the way, YY1 was identified as the upstream transcription factor for SNHG1. In conclusion, our study unveiled a novel competing endogenous RNA (ceRNA) pattern of SNHG1/miR-186-5p/YY1 positive feedback loop in hepatic I/R injury, which might provide new insight into prevention of HIRI during liver transplantation or hepatic surgery.

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Transcription profiling of rat blood and liver exposed to acetaminophen (APAP)

Project description:This SuperSeries is composed of the following subset Series:; GSE5593: Acetaminophen (APAP) Rat Blood Training Gene Expression Data Set; GSE5594: Acetaminophen (APAP) Rat Blood Test Gene Expression Data Set; GSE5595: Acetaminophen (APAP) Rat Liver Test Gene Expression Data Set; The Supplementary files (appended below) contain the mapping for the decoding of blinded samples. Experiment Overall Design: Refer to individual Series

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