miR-375 protects against acetaminophen-induced acute liver failure by orchestrating pharmacogene expression
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View abstract on PubMed
Summary
This summary is machine-generated.MicroRNA-375 (miR-375) shows potent protection against acetaminophen (APAP) overdose-induced liver failure in mice. This microRNA orchestrates gene expression to enhance detoxification and glutathione synthesis, offering a novel therapeutic strategy.
Area Of Science
- Hepatology
- Molecular Biology
- Pharmacology
Background
- Acetaminophen (APAP) overdose is a primary cause of acute liver failure (ALF).
- N-acetyl-p-benzoquinone imine (NAPQI) mediates APAP hepatotoxicity.
- Current treatment N-acetylcysteine (NAC) effectiveness can be limited; novel therapies are needed.
Purpose Of The Study
- To investigate the therapeutic potential of microRNA-375 (miR-375) in APAP overdose-induced ALF.
- To identify the molecular targets and mechanisms underlying miR-375's protective effects.
Main Methods
- Adeno-associated virus serotype 8 (AAV8) was used for liver-specific delivery of miR-375 in a murine model of APAP overdose.
- Liver transcriptome analysis was performed to identify miR-375 targets and affected pathways.
- Gene expression levels of key enzymes and glutathione synthesis markers were quantified.
Main Results
- Ectopic miR-375 delivery via AAV8 significantly protected against APAP-induced ALF.
- Slc16a2, Cyb5b, and Acsl5 were identified as direct targets of miR-375.
- miR-375 overexpression upregulated Gstm3 and GSS expression, while downregulating Cyp2e1.
- AAV8-mediated Gstm3 expression conferred protection, enhanced by Cyp2e1 disruption.
Conclusions
- miR-375 prevents APAP-ALF by modulating the expression of critical pharmacogenes.
- miR-375 enhances detoxification pathways and glutathione synthesis, crucial for mitigating APAP toxicity.
- miR-375 and its identified targets represent promising therapeutic avenues for treating APAP-induced liver injury.
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