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- W3138068905 abstract "Acetaminophen (APAP) overdose can cause liver injury and liver failure, which is one of the most common causes of drug-induced liver injury in the United States. Pharmacological activation of autophagy by inhibiting mechanistic target of rapamycin (mTOR) protects against APAP-induced liver injury likely via autophagic removal of APAP-adducts and damaged mitochondria. In the present study, we aimed to investigate the role of genetic ablation of mTOR pathways in mouse liver in APAP-induced liver injury and liver repair/regeneration. Albumin-Cre (Alb-Cre) mice, mTORf/f and Raptorf/f mice (C57BL/6J background) were crossbred to produce liver-specific mTOR knockout (L-mTOR KO, Alb Cre+/-, mTORf/f) and liver-specific Raptor KO (L-Raptor, Alb Cre+/-, Raptor f/f) mice. Alb-Cre littermates were used as wild-type (WT) mice. These mice were treated with APAP for various time points for up to 48 h. Liver injury, cell proliferation, autophagy and mTOR activation were determined. We found that genetic deletion of neither Raptor, an important adaptor protein in mTOR complex 1, nor mTOR, in the mouse liver significantly protected against APAP-induced liver injury despite increased hepatic autophagic flux. Genetic deletion of Raptor or mTOR in mouse livers did not affect APAP metabolism and APAP-induced c-Jun N-terminal kinase (JNK) activation, but slightly improved mouse survival likely due to increased hepatocyte proliferation. Our results indicate that genetic ablation of mTOR in mouse livers does not protect against APAP-induced liver injury but may slightly improve liver regeneration and mouse survival after APAP overdose." @default.
- W3138068905 created "2021-03-29" @default.
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- W3138068905 date "2021-06-01" @default.
- W3138068905 modified "2023-10-17" @default.
- W3138068905 title "Liver-specific deletion of mechanistic target of rapamycin does not protect against acetaminophen-induced liver injury in mice" @default.
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- W3138068905 doi "https://doi.org/10.1016/j.livres.2021.03.001" @default.
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