PMID- 33987225 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20231123 IS - 2305-5839 (Print) IS - 2305-5847 (Electronic) IS - 2305-5839 (Linking) VI - 9 IP - 7 DP - 2021 Apr TI - Mitochondrial dysfunction attenuates rapid regeneration in livers with toxin-induced fibrosis. PG - 527 LID - 10.21037/atm-20-4639 [doi] LID - 527 AB - BACKGROUND: The mechanism of associating liver partition and portal vein ligation for staged hepatectomy (ALPPS)-induced rapid liver regeneration remains poorly documented, especially in patients with fibrosis. Therefore, this study aims to investigate the underlying mechanism of ALPPS-induced accelerated regeneration in toxin-induced fibrosis models. METHODS: The ALPPS-induced regeneration model was established in livers with thioacetamide (TAA)-induced fibrosis to determine the regenerative pathways involved in rapid regeneration. Confirmatory experiments were performed in transforming growth factor beta 1 (TGFbeta1)-treated AML12 cells and mice with carbon tetrachloride (CCl(4))-induced fibrosis. Finally, mitochondrial dysfunction was validated in fibrotic/non-fibrotic patients. RESULTS: In TAA-induced fibrotic mice, ALPPS-induced regeneration was significantly inferior to that of the control group (P=0.027 at day 2 and P<0.001 at day 7). Furthermore, mitochondria-associated genes were significantly downregulated in TAA-challenged mice. Accordingly, the reduced production of ATP and elevated levels of malondialdehyde indicated disturbances in intracellular energy metabolism during the ALPPS-induced regenerative process after TAA treatment. Further investigations were performed in TGF-beta1-treated AML12 cells and CCl(4)-treated mice, which indicated that mitochondrial dysfunction attenuated the capacity for rapid regeneration after ALPPS. CONCLUSIONS: In summary, this study revealed that mitochondrial dysfunction led to inferior regeneration in livers with toxin-induced fibrosis and identified new therapeutic targets to improve the feasibility and safety of the ALPPS procedure. Further studies in human patients are required in the future. CI - 2021 Annals of Translational Medicine. All rights reserved. FAU - Li, Zheyong AU - Li Z AD - Department of General Surgery, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, China. AD - Zhejiang Provincial Key Laboratory of Laparoscopic Technology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, China. FAU - Liang, Yuelong AU - Liang Y AD - Department of General Surgery, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, China. AD - Zhejiang Provincial Key Laboratory of Laparoscopic Technology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, China. FAU - Ying, Hanning AU - Ying H AD - Department of General Surgery, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, China. AD - Zhejiang Provincial Key Laboratory of Laparoscopic Technology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, China. FAU - Chen, Mingyu AU - Chen M AD - Department of General Surgery, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, China. AD - Zhejiang Provincial Key Laboratory of Laparoscopic Technology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, China. FAU - He, Xiaoyan AU - He X AD - Zhejiang Provincial Key Laboratory of Laparoscopic Technology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, China. AD - Department of Biological Treatment Research Center, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, China. FAU - Wang, Yifan AU - Wang Y AD - Department of General Surgery, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, China. AD - Zhejiang Provincial Key Laboratory of Laparoscopic Technology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, China. FAU - Tong, Yifan AU - Tong Y AD - Department of General Surgery, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, China. AD - Zhejiang Provincial Key Laboratory of Laparoscopic Technology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, China. FAU - Cai, Xiujun AU - Cai X AD - Department of General Surgery, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, China. AD - Zhejiang Provincial Key Laboratory of Laparoscopic Technology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, China. LA - eng PT - Journal Article PL - China TA - Ann Transl Med JT - Annals of translational medicine JID - 101617978 PMC - PMC8105818 OTO - NOTNLM OT - Associating liver partition and portal vein ligation for staged hepatectomy (ALPPS) OT - fibrosis OT - mitochondrial dysfunction OT - regeneration COIS- Conflicts of Interest: All authors have completed the ICMJE uniform disclosure form (available at http://dx.doi.org/10.21037/atm-20-4639). The authors have no conflicts of interest to declare. EDAT- 2021/05/15 06:00 MHDA- 2021/05/15 06:01 PMCR- 2021/04/01 CRDT- 2021/05/14 07:02 PHST- 2021/05/14 07:02 [entrez] PHST- 2021/05/15 06:00 [pubmed] PHST- 2021/05/15 06:01 [medline] PHST- 2021/04/01 00:00 [pmc-release] AID - atm-09-07-527 [pii] AID - 10.21037/atm-20-4639 [doi] PST - ppublish SO - Ann Transl Med. 2021 Apr;9(7):527. doi: 10.21037/atm-20-4639.