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Qiu B, Zhong Z, Dou L, Xu Y, Zou Y, Weldon K, Wang J, Zhang L, Liu M, Williams KE, Spence JP, Bell RL, Lai Z, Yong W, Liang T. Knocking out Fkbp51 decreases CCl 4-induced liver injury through enhancement of mitochondrial function and Parkin activity. Cell Biosci 2024; 14:1. [PMID: 38167156 PMCID: PMC10763032 DOI: 10.1186/s13578-023-01184-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Accepted: 12/12/2023] [Indexed: 01/05/2024] Open
Abstract
BACKGROUND AND AIMS Previously, we found that FK506 binding protein 51 (Fkbp51) knockout (KO) mice resist high fat diet-induced fatty liver and alcohol-induced liver injury. The aim of this research is to identify the mechanism of Fkbp51 in liver injury. METHODS Carbon tetrachloride (CCl4)-induced liver injury was compared between Fkbp51 KO and wild type (WT) mice. Step-wise and in-depth analyses were applied, including liver histology, biochemistry, RNA-Seq, mitochondrial respiration, electron microscopy, and molecular assessments. The selective FKBP51 inhibitor (SAFit2) was tested as a potential treatment to ameliorate liver injury. RESULTS Fkbp51 knockout mice exhibited protection against liver injury, as evidenced by liver histology, reduced fibrosis-associated markers and lower serum liver enzyme levels. RNA-seq identified differentially expressed genes and involved pathways, such as fibrogenesis, inflammation, mitochondria, and oxidative metabolism pathways and predicted the interaction of FKBP51, Parkin, and HSP90. Cellular studies supported co-localization of Parkin and FKBP51 in the mitochondrial network, and Parkin was shown to be expressed higher in the liver of KO mice at baseline and after liver injury relative to WT. Further functional analysis identified that KO mice exhibited increased ATP production and enhanced mitochondrial respiration. KO mice have increased mitochondrial size, increased autophagy/mitophagy and mitochondrial-derived vesicles (MDV), and reduced reactive oxygen species (ROS) production, which supports enhancement of mitochondrial quality control (MQC). Application of SAFit2, an FKBP51 inhibitor, reduced the effects of CCl4-induced liver injury and was associated with increased Parkin, pAKT, and ATP production. CONCLUSIONS Downregulation of FKBP51 represents a promising therapeutic target for liver disease treatment.
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Affiliation(s)
- Bin Qiu
- Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100021, China
- Department of Pharmacology, Yale University School of Medicine, New Haven, CI, 06520, USA
| | - Zhaohui Zhong
- General Surgery Department, Peking University People's Hospital, Beijing, 100032, China
| | - Longyu Dou
- Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100021, China
| | - Yuxue Xu
- Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100021, China
| | - Yi Zou
- Greehey Children's Cancer Research Institute, UT Health, San Antonio, TX, 78229, USA
| | - Korri Weldon
- Greehey Children's Cancer Research Institute, UT Health, San Antonio, TX, 78229, USA
| | - Jun Wang
- Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100021, China
| | - Lingling Zhang
- Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100021, China
| | - Ming Liu
- Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100021, China
| | - Kent E Williams
- Department of Medicine, Indiana University, School of Medicine, Indianapolis, 46202, USA
| | - John Paul Spence
- Department of Pediatrics, Indiana University, School of Medicine, Indianapolis, 46202, USA
| | - Richard L Bell
- Department of Psychiatry, Indiana University, School of Medicine, Indianapolis, 46202, USA
| | - Zhao Lai
- Greehey Children's Cancer Research Institute, UT Health, San Antonio, TX, 78229, USA
| | - Weidong Yong
- Department of Surgery, Indiana University, School of Medicine, Indianapolis, 46202, USA.
- Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100021, China.
| | - Tiebing Liang
- Department of Medicine, Indiana University, School of Medicine, Indianapolis, 46202, USA.
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