Abstract
Background
Impaired liver regeneration in hepatitis B virus-related acute-on-chronic liver failure (HBV-ACLF) patients is closely related to prognosis; however, the mechanisms are not yet defined. Liver-derived extracellular vesicles (EVs) may be involved in the dysregulation of liver regeneration. Clarifying the underlying mechanisms will improve the treatments for HBV-ACLF.
Methods
EVs were isolated by ultracentrifugation from liver tissues of HBV-ACLF patients (ACLF_EVs) after liver transplantation, and their function was investigated in acute liver injury (ALI) mice and AML12 cells. Differentially expressed miRNAs (DE-miRNAs) were screened by deep miRNA sequencing. The lipid nanoparticle (LNP) system was applied as a carrier for the targeted delivery of miRNA inhibitors to improve its effect on liver regeneration.
Results
ACLF_EVs inhibited hepatocyte proliferation and liver regeneration, with a critical role of miR-218-5p. Mechanistically, ACLF_EVs fused directly with target hepatocytes and transferred miR-218-5p into hepatocytes, acting by suppressing FGFR2 mRNA and inhibiting the activation of ERK1/2 signaling pathway. Reducing the level of miR-218-5p expression in the liver of ACLF mice partially restored liver regeneration ability.
Conclusion
The current data reveal the mechanism underlying impaired liver regeneration in HBV-ACLF that promotes the discovery of new therapeutic approaches.
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Data availability
Sequencing data generated in this study has been deposited at the National Omics Data Encyclopedia (NODE) under the accession code OEP004077 (https://www.biosino.org/node/project/detail/OEP004077).
Abbreviations
- CCl4 :
-
Carbon tetrachloride
- ALT:
-
Alanine aminotransferase
- AST:
-
Aspartate aminotransferase
- LDH:
-
Lactate dehydrogenase
- TBIL:
-
Total bilirubin
- BUN:
-
Blood urea nitrogen
- ACLF:
-
Acute-on-chronic liver failure
- HC:
-
Healthy control
- CI:
-
Chronic inflammation
- EVs:
-
Extracellular vesicles
- ACLF_EVs:
-
Liver-derived extracellular vesicles from ACLF
- HC_EVs:
-
Liver-derived extracellular vesicles from healthy control
- H&E staining:
-
Hematoxylin–eosin staining
- PCNA:
-
Proliferating cell nuclear antigen
- CCK-8:
-
Cell Counting Kit-8
- DAPI:
-
4′,6-Diamidino-2-phenylindole
- EdU:
-
5-Ethynyl-2′-deoxyuridine
- LC:
-
Liver cirrhosis
- LC_EVs:
-
Liver-derived extracellular vesicles from LC
- DE-miRNAs:
-
Differentially expressed miRNAs
- KEGG:
-
Kyoto Encyclopedia of Genes and Genomes
- GO:
-
Gene ontology
- FGFR2:
-
Fibroblast Growth Factor Receptor 2
- ALB:
-
Albumin
- miR_veh:
-
miR-vehicle
- miR_inh:
-
miR-inhibitor
- miR_ago:
-
miR-agomir
- miR_ant:
-
miR-antagomir
- LNP:
-
Lipid nanoparticle
- NPCs:
-
Nonparenchymal cells
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Acknowledgements
The authors acknowledge the patients, study investigators, and coordinators for their contributions in this study.
Funding
This study was supported by the National Natural Science Foundation of China (82170646 to Hualian Hang), “Key Project” of Shanghai Jiao Tong University Medical-Industry Intersection (YG2021ZD10 to Hualian Hang), Clinical Research Innovation Cultivation Fund of Renji Hospital, School of Medicine, Shanghai Jiao Tong University (RJPY-DZX-006 to Hualian Hang).
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All authors contributed to the study conception and design. SZ, JY and KR designed research; SZ, JY and KR and JC performed research; LM, YY, ZL and ZZ carried data analysis; YQ, MC and HH supervised research; SZ, JY and KR wrote the paper. All authors approved the manuscript.
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Senquan Zhang, Jie Yu, Keqiang Rao, Jie Cao, Lijie Ma, Yeping Yu, Zhe Li, Zhaokai Zeng, Yongbing Qian, Mo Chen, Hualian Hang have no relevant financial or non-financial interests to disclose.
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All procedures followed were in accordance with the ethical standards of the responsible committee on human experimentation (Ethics Committee of Renji Hospital of Shanghai Jiao Tong University School of Medicine, China) and with the Helsinki Declaration of 1975, as revised in 2008. Informed consent was obtained from all patients for being included in the study.
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Zhang, S., Yu, J., Rao, K. et al. Liver-derived extracellular vesicles from patients with hepatitis B virus-related acute-on-chronic liver failure impair hepatic regeneration by inhibiting on FGFR2 signaling via miR-218-5p. Hepatol Int 17, 833–849 (2023). https://doi.org/10.1007/s12072-023-10513-0
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DOI: https://doi.org/10.1007/s12072-023-10513-0