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Li W, Lv R, Zou T, Chen M. Tricetin protects against liver fibrosis through promoting autophagy and Nrf2 signaling in hepatic stellate cells. Life Sci 2024; 351:122798. [PMID: 38852802 DOI: 10.1016/j.lfs.2024.122798] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2024] [Revised: 04/07/2024] [Accepted: 06/04/2024] [Indexed: 06/11/2024]
Abstract
AIMS The study aims to investigate the role and underlying mechanisms of tricetin in regulating hepatic stellate cells (HSCs) activation. MAIN METHODS We treated human hepatic stellate cells line LX-2 and freshly isolated primary mouse hepatic stellate cells (mHSCs) with tricetin, pharmacological inhibitors and siRNAs, western blot, immunofluorescence, quantitative PCR were used to evaluate the expression of fibrotic markers, autophagy levels and Nrf2 (nuclear factor E2-related factor 2) signaling. KEY FINDINGS Herein, we demonstrated that tricetin strongly attenuated the proliferation, migration, lipid droplets (LDs) loss and fibrotic markers Col 1a1 (type I α 1 collagen) and α-SMA (α-smooth muscle actin) expression in LX-2 cells. Moreover, tricetin time- and dose-dependently provoked autophagic formation in LX-2 cells. Autophagy inhibition by pharmacological intervention or genetic ATG5 (autophagy related 5) silencing facilitated tricetin-induced downregulation of profibrotic markers in LX-2 cells. Additionally, tricetin treatment reduced reactive oxygen species (ROS) accumulation, promoted Nrf2 signaling in LX-2 cells and pretreatment with ROS scavenger NAC partially reversed tricetin-induced autophagy and enhanced tricetin-mediated HSCs inactivation. Nrf2 silencing partially reversed tricetin-mediated inhibition of α-SMA expression. Finally, utilizing primary mouse hepatic stellate cells (mHSCs), we demonstrated that tricetin also induced autophagy activation, repressed TGF-β1-induced LDs loss and fibrotic marker expression and pretreatment with CQ further sensitized these effects. SIGNIFICANCE Our study indicates that tricetin's actions may represent an effective strategy to treat liver fibrosis and help identify novel therapeutic targets, especially in combination with autophagy inhibitors.
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Affiliation(s)
- Wanzhi Li
- Department of Nutrition, School of Public Health, Guangdong Medical University, No.1 Xincheng Avenue, Songshan Lake Science & Technologic Industry Park, Dongguan, China
| | - Ruyue Lv
- Department of Nutrition, School of Public Health, Guangdong Medical University, No.1 Xincheng Avenue, Songshan Lake Science & Technologic Industry Park, Dongguan, China
| | - Tangbin Zou
- Department of Nutrition, School of Public Health, Guangdong Medical University, No.1 Xincheng Avenue, Songshan Lake Science & Technologic Industry Park, Dongguan, China; Dongguan Key Laboratory of Chronic Inflammatory Diseases, The First Dongguan Affiliated Hospital, Guangdong Medical University, No. 42 Jiaoping Road, Tangxia Town, Dongguan, China.
| | - Ming Chen
- Department of Nutrition, School of Public Health, Guangdong Medical University, No.1 Xincheng Avenue, Songshan Lake Science & Technologic Industry Park, Dongguan, China.
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Deng J, Long J, Yang Y, Yang F, Wei Y. Gentiana decoction inhibits liver fibrosis and the activation of hepatic stellate cells via upregulating the expression of Parkin. Fitoterapia 2024; 178:106170. [PMID: 39122121 DOI: 10.1016/j.fitote.2024.106170] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2024] [Revised: 08/01/2024] [Accepted: 08/02/2024] [Indexed: 08/12/2024]
Abstract
Liver fibrosis is a wound-healing process. It can be induced by various chronic liver diseases. Liver fibrosis is characterized by the activation of hepatic stellate cells (HSCs), a key event. However, no effective treatment strategies to cure or alleviate liver fibrosis-induced pathologic changes have yet been developed. Traditional Chinese medicine (TCM) exhibits a good anti-fibrosis action, with few side effects. Gentiana decoction, a TCM also called Longdan Xiegan Tang (LXT), is used for purging the liver in clinical settings. However, the role of LXT in preventing liver fibrosis and the underlying regulatory mechanism have not yet been investigated. This study demonstrates that LXT treatment can protect the liver from the injuries resulting from CCl4-induced liver fibrosis in mice and suppress the activation of HSCs. The mice in the LXT group exhibit litter collagen I and HSC activation marker α-smooth muscle actin (α-SMA) expression. Transcriptome sequencing of the mouse liver tissue reveals that the level of Parkin, a mitophagy marker, decreased in CCl4-induced liver fibrosis. Further study shows that the injection of Parkin-overexpression adeno-associated virus (Parkin-AAV) via the tail vein can reduce CCl4-induced liver fibrogenesis in mice. We conducted a mechanistic study also, which suggests that LXT treatment suppresses the activation of HSCs by upregulating the expression of Parkin. Hence, it can be suggested that LXT inhibits liver fibrosis by activating the Parkin signaling pathway.
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Affiliation(s)
- Jing Deng
- Guangzhou Institute of Cancer Research, the Affiliated Cancer Hospital, Guangzhou Medical University, Hengzhi 78nd Road, Guangzhou 510095, China.
| | - Jun Long
- Department of Neurosurgery, Neuroscience Center, Integrated Hospital of Traditional Chinese Medicine, Southern Medical University, Guangzhou 510310, PR China
| | - Yang Yang
- Department of Biochemistry, Zhongshan School of Medicine, Sun Yat-Sen University, 74 Zhongshan 2nd Road, Guangzhou 510080, China
| | - Fengyu Yang
- Department of Biochemistry, Zhongshan School of Medicine, Sun Yat-Sen University, 74 Zhongshan 2nd Road, Guangzhou 510080, China
| | - Yongjie Wei
- Guangzhou Institute of Cancer Research, the Affiliated Cancer Hospital, Guangzhou Medical University, Hengzhi 78nd Road, Guangzhou 510095, China.
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3
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Raza S, Rajak S, Yen PM, Sinha RA. Autophagy and hepatic lipid metabolism: mechanistic insight and therapeutic potential for MASLD. NPJ METABOLIC HEALTH AND DISEASE 2024; 2:19. [PMID: 39100919 PMCID: PMC11296953 DOI: 10.1038/s44324-024-00022-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/30/2024] [Accepted: 07/04/2024] [Indexed: 08/06/2024]
Abstract
Metabolic dysfunction-associated steatotic liver disease (MASLD) originates from a homeostatic imbalance in hepatic lipid metabolism. Increased fat deposition in the liver of people suffering from MASLD predisposes them to develop further metabolic derangements, including diabetes mellitus, metabolic dysfunction-associated steatohepatitis (MASH), and other end-stage liver diseases. Unfortunately, only limited pharmacological therapies exist for MASLD to date. Autophagy, a cellular catabolic process, has emerged as a primary mechanism of lipid metabolism in mammalian hepatocytes. Furthermore, preclinical studies with autophagy modulators have shown promising results in resolving MASLD and mitigating its progress into deleterious liver pathologies. In this review, we discuss our current understanding of autophagy-mediated hepatic lipid metabolism, its therapeutic modulation for MASLD treatment, and current limitations and scope for clinical translation.
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Affiliation(s)
- Sana Raza
- Department of Endocrinology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, 226014 India
| | - Sangam Rajak
- Department of Endocrinology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, 226014 India
| | - Paul M. Yen
- Laboratory of Hormonal Regulation, Cardiovascular and Metabolic Disorders Program, Duke-NUS Medical School, Singapore, 169857 Singapore
| | - Rohit A. Sinha
- Department of Endocrinology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, 226014 India
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Wang H, Li X, Zhang Q, Fu C, Jiang W, Xue J, Liu S, Meng Q, Ai L, Zhi X, Deng S, Liang W. Autophagy in Disease Onset and Progression. Aging Dis 2024; 15:1646-1671. [PMID: 37962467 PMCID: PMC11272186 DOI: 10.14336/ad.2023.0815] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Accepted: 08/15/2023] [Indexed: 11/15/2023] Open
Abstract
Autophagy is a biological phenomenon whereby components of cells can self-degrade using autophagosomes. During this process, cells can clear dysfunctional organelles or unwanted elements. Autophagy can recycle unnecessary biomolecules into new components or sometimes, even destroy the cells themselves. This cellular process was first observed in 1962 by Keith R. Porter et al. Since then, autophagy has been studied for over 60 years, and much has been learned on the topic. Nevertheless, the process is still not fully understood. It has been proven, for example, that autophagy can be a positive force for maintaining good health by removing older or damaged cells. By contrast, autophagy is also involved in the onset and progression of various conditions caused by pathogenic infections. These diseases generally involve several important organs in the human body, including the liver, kidney, heart, and central nervous system. The regulation of the defects of autophagy defects may potentially be used to treat some diseases. This review comprehensively discusses recent research frontiers and topics of interest regarding autophagy-related diseases.
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Affiliation(s)
- Hao Wang
- Shenzhen Baoan Women's and Children's Hospital, Jinan University, Shenzhen, Guangdong, China.
| | - Xiushen Li
- Department of Obstetrics and Gynecology, Shenzhen University General Hospital, Shenzhen, Guangdong, China.
| | - Qi Zhang
- Department of Obstetrics and Gynecology, Shenzhen University General Hospital, Shenzhen, Guangdong, China.
| | - Chengtao Fu
- School of Medicine, Huzhou University, Zhejiang, China.
| | - Wenjie Jiang
- Department of Artificial Intelligence and Data Science, Hebei University of Technology, Tianjin, China.
| | - Jun Xue
- Department of General Surgery, The First Affiliated Hospital of Hebei North University, Zhangjiakou, Hebei, China.
| | - Shan Liu
- Bioimaging Core of Shenzhen Bay Laboratory Shenzhen, China.
| | - Qingxue Meng
- Technology Department, The First Affiliated Hospital of Hebei North University, Zhangjiakou, Hebei, China.
| | - Lisha Ai
- Department of Teaching and Research, Shenzhen University General Hospital, Shenzhen, Guangdong, China.
| | - Xuejun Zhi
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Hebei North University, Zhangjiakou, Hebei, China.
| | - Shoulong Deng
- National Health Commission of China (NHC) Key Laboratory of Human Disease Comparative Medicine, Institute of Laboratory Animal Sciences, Chinese Academy of Medical Sciences and Comparative Medicine Center, Peking Union Medical College, Beijing, China.
| | - Weizheng Liang
- Central Laboratory, The First Affiliated Hospital of Hebei North University, Zhangjiakou, Hebei, China.
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Duan Y, Yang Y, Zhao S, Bai Y, Yao W, Gao X, Yin J. Crosstalk in extrahepatic and hepatic system in NAFLD/NASH. Liver Int 2024; 44:1856-1871. [PMID: 38717072 DOI: 10.1111/liv.15967] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Revised: 02/28/2024] [Accepted: 04/26/2024] [Indexed: 07/17/2024]
Abstract
Non-alcoholic fatty liver disease (NAFLD) has emerged as the most prevalent chronic liver disease globally. Non-alcoholic steatohepatitis (NASH) represents an extremely progressive form of NAFLD, which, without timely intervention, may progress to cirrhosis or hepatocellular carcinoma. Presently, a definitive comprehension of the pathogenesis of NAFLD/NASH eludes us, and pharmacological interventions targeting NASH specifically remain constrained. The aetiology of NAFLD encompasses a myriad of external factors including environmental influences, dietary habits and gender disparities. More significantly, inter-organ and cellular interactions within the human body play a role in the development or regression of the disease. In this review, we categorize the influences affecting NAFLD both intra- and extrahepatically, elaborating meticulously on the mechanisms governing the onset and progression of NAFLD/NASH. This exploration delves into progress in aetiology and promising therapeutic targets. As a metabolic disorder, the development of NAFLD involves complexities related to nutrient metabolism, liver-gut axis interactions and insulin resistance, among other regulatory functions of extraneous organs. It further encompasses intra-hepatic interactions among hepatic cells, Kupffer cells (KCs) and hepatic stellate cells (HSCs). A comprehensive understanding of the pathogenesis of NAFLD/NASH from a macroscopic standpoint is instrumental in the formulation of future therapies for NASH.
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Affiliation(s)
- Yiliang Duan
- Jiangsu Key Laboratory of Druggability of Biopharmaceuticals and State Key Laboratory of Natural Medicines, School of Life Science and Technology, China Pharmaceutical University, Nanjing, China
| | - Yan Yang
- The Third People's Hospital of Chengdu, Affiliated Hospital of Southwest Jiaotong University, Chengdu, China
| | - Shuqiang Zhao
- Jiangsu Institute for Food and Drug Control, NMPA Key Laboratory for Impurity Profile of Chemical Drugs, Nanjing, Jiangsu, China
| | - Yuesong Bai
- Jiangsu Key Laboratory of Druggability of Biopharmaceuticals and State Key Laboratory of Natural Medicines, School of Life Science and Technology, China Pharmaceutical University, Nanjing, China
| | - Wenbing Yao
- Jiangsu Key Laboratory of Druggability of Biopharmaceuticals and State Key Laboratory of Natural Medicines, School of Life Science and Technology, China Pharmaceutical University, Nanjing, China
| | - Xiangdong Gao
- Jiangsu Key Laboratory of Druggability of Biopharmaceuticals and State Key Laboratory of Natural Medicines, School of Life Science and Technology, China Pharmaceutical University, Nanjing, China
| | - Jun Yin
- Jiangsu Key Laboratory of Druggability of Biopharmaceuticals and State Key Laboratory of Natural Medicines, School of Life Science and Technology, China Pharmaceutical University, Nanjing, China
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Wilhelmsen I, Combriat T, Dalmao-Fernandez A, Stokowiec J, Wang C, Olsen PA, Wik JA, Boichuk Y, Aizenshtadt A, Krauss S. The effects of TGF-β-induced activation and starvation of vitamin A and palmitic acid on human stem cell-derived hepatic stellate cells. Stem Cell Res Ther 2024; 15:223. [PMID: 39044210 PMCID: PMC11267759 DOI: 10.1186/s13287-024-03852-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2024] [Accepted: 07/14/2024] [Indexed: 07/25/2024] Open
Abstract
BACKGROUND Hepatic stellate cells (HSC) have numerous critical roles in liver function and homeostasis, while they are also known for their importance during liver injury and fibrosis. There is therefore a need for relevant in vitro human HSC models to fill current knowledge gaps. In particular, the roles of vitamin A (VA), lipid droplets (LDs), and energy metabolism in human HSC activation are poorly understood. METHODS In this study, human pluripotent stem cell-derived HSCs (scHSCs), benchmarked to human primary HSC, were exposed to 48-hour starvation of retinol (ROL) and palmitic acid (PA) in the presence or absence of the potent HSC activator TGF-β. The interventions were studied by an extensive set of phenotypic and functional analyses, including transcriptomic analysis, measurement of activation-related proteins and cytokines, VA- and LD storage, and cell energy metabolism. RESULTS The results show that though the starvation of ROL and PA alone did not induce scHSC activation, the starvation amplified the TGF-β-induced activation-related transcriptome. However, TGF-β-induced activation alone did not lead to a reduction in VA or LD stores. Additionally, reduced glycolysis and increased mitochondrial fission were observed in response to TGF-β. CONCLUSIONS scHSCs are robust models for activation studies. The loss of VA and LDs is not sufficient for scHSC activation in vitro, but may amplify the TGF-β-induced activation response. Collectively, our work provides an extensive framework for studying human HSCs in healthy and diseased conditions.
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Affiliation(s)
- Ingrid Wilhelmsen
- Department of Immunology and Transfusion Medicine, Oslo University Hospital, P.O. Box 4950, Nydalen, Oslo, 0424, Norway.
- Hybrid Technology Hub - Centre of Excellence, Institute of Basic Medical Sciences, University of Oslo, P.O. Box 1110, Blindern, Oslo, 0317, Norway.
| | - Thomas Combriat
- Hybrid Technology Hub - Centre of Excellence, Institute of Basic Medical Sciences, University of Oslo, P.O. Box 1110, Blindern, Oslo, 0317, Norway
| | - Andrea Dalmao-Fernandez
- Department of Immunology and Transfusion Medicine, Oslo University Hospital, P.O. Box 4950, Nydalen, Oslo, 0424, Norway
- Hybrid Technology Hub - Centre of Excellence, Institute of Basic Medical Sciences, University of Oslo, P.O. Box 1110, Blindern, Oslo, 0317, Norway
- Section for Pharmacology and Pharmaceutical Biosciences, Department of Pharmacy, University of Oslo, P.O. Box 1068, Blindern, Oslo, 0316, Norway
| | - Justyna Stokowiec
- Hybrid Technology Hub - Centre of Excellence, Institute of Basic Medical Sciences, University of Oslo, P.O. Box 1110, Blindern, Oslo, 0317, Norway
| | - Chencheng Wang
- Hybrid Technology Hub - Centre of Excellence, Institute of Basic Medical Sciences, University of Oslo, P.O. Box 1110, Blindern, Oslo, 0317, Norway
- Department of Transplantation Medicine, Institute for Surgical Research, Oslo University Hospital, P.O. Box 4950, Nydalen, Oslo, 0424, Norway
| | - Petter Angell Olsen
- Department of Immunology and Transfusion Medicine, Oslo University Hospital, P.O. Box 4950, Nydalen, Oslo, 0424, Norway
- Hybrid Technology Hub - Centre of Excellence, Institute of Basic Medical Sciences, University of Oslo, P.O. Box 1110, Blindern, Oslo, 0317, Norway
| | - Jonas Aakre Wik
- Department of Immunology and Transfusion Medicine, Oslo University Hospital, P.O. Box 4950, Nydalen, Oslo, 0424, Norway
- Hybrid Technology Hub - Centre of Excellence, Institute of Basic Medical Sciences, University of Oslo, P.O. Box 1110, Blindern, Oslo, 0317, Norway
| | - Yuliia Boichuk
- Hybrid Technology Hub - Centre of Excellence, Institute of Basic Medical Sciences, University of Oslo, P.O. Box 1110, Blindern, Oslo, 0317, Norway
| | - Aleksandra Aizenshtadt
- Department of Immunology and Transfusion Medicine, Oslo University Hospital, P.O. Box 4950, Nydalen, Oslo, 0424, Norway
- Hybrid Technology Hub - Centre of Excellence, Institute of Basic Medical Sciences, University of Oslo, P.O. Box 1110, Blindern, Oslo, 0317, Norway
| | - Stefan Krauss
- Department of Immunology and Transfusion Medicine, Oslo University Hospital, P.O. Box 4950, Nydalen, Oslo, 0424, Norway
- Hybrid Technology Hub - Centre of Excellence, Institute of Basic Medical Sciences, University of Oslo, P.O. Box 1110, Blindern, Oslo, 0317, Norway
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Akkız H, Gieseler RK, Canbay A. Liver Fibrosis: From Basic Science towards Clinical Progress, Focusing on the Central Role of Hepatic Stellate Cells. Int J Mol Sci 2024; 25:7873. [PMID: 39063116 PMCID: PMC11277292 DOI: 10.3390/ijms25147873] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2024] [Revised: 06/28/2024] [Accepted: 06/29/2024] [Indexed: 07/28/2024] Open
Abstract
The burden of chronic liver disease is globally increasing at an alarming rate. Chronic liver injury leads to liver inflammation and fibrosis (LF) as critical determinants of long-term outcomes such as cirrhosis, liver cancer, and mortality. LF is a wound-healing process characterized by excessive deposition of extracellular matrix (ECM) proteins due to the activation of hepatic stellate cells (HSCs). In the healthy liver, quiescent HSCs metabolize and store retinoids. Upon fibrogenic activation, quiescent HSCs transdifferentiate into myofibroblasts; lose their vitamin A; upregulate α-smooth muscle actin; and produce proinflammatory soluble mediators, collagens, and inhibitors of ECM degradation. Activated HSCs are the main effector cells during hepatic fibrogenesis. In addition, the accumulation and activation of profibrogenic macrophages in response to hepatocyte death play a critical role in the initiation of HSC activation and survival. The main source of myofibroblasts is resident HSCs. Activated HSCs migrate to the site of active fibrogenesis to initiate the formation of a fibrous scar. Single-cell technologies revealed that quiescent HSCs are highly homogenous, while activated HSCs/myofibroblasts are much more heterogeneous. The complex process of inflammation results from the response of various hepatic cells to hepatocellular death and inflammatory signals related to intrahepatic injury pathways or extrahepatic mediators. Inflammatory processes modulate fibrogenesis by activating HSCs and, in turn, drive immune mechanisms via cytokines and chemokines. Increasing evidence also suggests that cellular stress responses contribute to fibrogenesis. Recent data demonstrated that LF can revert even at advanced stages of cirrhosis if the underlying cause is eliminated, which inhibits the inflammatory and profibrogenic cells. However, despite numerous clinical studies on plausible drug candidates, an approved antifibrotic therapy still remains elusive. This state-of-the-art review presents cellular and molecular mechanisms involved in hepatic fibrogenesis and its resolution, as well as comprehensively discusses the drivers linking liver injury to chronic liver inflammation and LF.
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Affiliation(s)
- Hikmet Akkız
- Department of Gastroenterology and Hepatology, University of Bahçeşehir, Beşiktaş, Istanbul 34353, Turkey
| | - Robert K. Gieseler
- Department of Internal Medicine, University Hospital Knappschaftskrankenhaus, Ruhr University Bochum, In der Schornau 23–25, 44892 Bochum, Germany; (R.K.G.); (A.C.)
| | - Ali Canbay
- Department of Internal Medicine, University Hospital Knappschaftskrankenhaus, Ruhr University Bochum, In der Schornau 23–25, 44892 Bochum, Germany; (R.K.G.); (A.C.)
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Cheng Z, Chu H, Seki E, Lin R, Yang L. Hepatocyte programmed cell death: the trigger for inflammation and fibrosis in metabolic dysfunction-associated steatohepatitis. Front Cell Dev Biol 2024; 12:1431921. [PMID: 39071804 PMCID: PMC11272544 DOI: 10.3389/fcell.2024.1431921] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2024] [Accepted: 06/28/2024] [Indexed: 07/30/2024] Open
Abstract
By replacing and removing defective or infected cells, programmed cell death (PCD) contributes to homeostasis maintenance and body development, which is ubiquitously present in mammals and can occur at any time. Besides apoptosis, more novel modalities of PCD have been described recently, such as necroptosis, pyroptosis, ferroptosis, and autophagy-dependent cell death. PCD not only regulates multiple physiological processes, but also participates in the pathogenesis of diverse disorders, including metabolic dysfunction-associated steatotic liver disease (MASLD). MASLD is mainly classified into metabolic dysfunction-associated steatotic liver (MASL) and metabolic dysfunction-associated steatohepatitis (MASH), and the latter putatively progresses to cirrhosis and hepatocellular carcinoma. Owing to increased incidence and obscure etiology of MASH, its management still remains a tremendous challenge. Recently, hepatocyte PCD has been attracted much attention as a potent driver of the pathological progression from MASL to MASH, and some pharmacological agents have been proved to exert their salutary effects on MASH partly via the regulation of the activity of hepatocyte PCD. The current review recapitulates the pathogenesis of different modalities of PCD, clarifies the mechanisms underlying how metabolic disorders in MASLD induce hepatocyte PCD and how hepatocyte PCD contributes to inflammatory and fibrotic progression of MASH, discusses several signaling pathways in hepatocytes governing the execution of PCD, and summarizes some potential pharmacological agents for MASH treatment which exert their therapeutic effects partly via the regulation of hepatocyte PCD. These findings indicate that hepatocyte PCD putatively represents a new therapeutic point of intervention for MASH.
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Affiliation(s)
- Zilu Cheng
- Division of Gastroenterology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Huikuan Chu
- Division of Gastroenterology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Ekihiro Seki
- Karsh Division of Gastroenterology and Hepatology, Cedars-Sinai Medical Center, Los Angeles, CA, United States
- Samuel Oschin Comprehensive Cancer Institute, Cedars-Sinai Medical Center, Los Angeles, CA, United States
| | - Rong Lin
- Division of Gastroenterology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Ling Yang
- Division of Gastroenterology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
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Horn P, Tacke F. Metabolic reprogramming in liver fibrosis. Cell Metab 2024; 36:1439-1455. [PMID: 38823393 DOI: 10.1016/j.cmet.2024.05.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/02/2024] [Revised: 04/30/2024] [Accepted: 05/06/2024] [Indexed: 06/03/2024]
Abstract
Chronic liver diseases, primarily metabolic dysfunction-associated steatotic liver disease (MASLD), harmful use of alcohol, or viral hepatitis, may result in liver fibrosis, cirrhosis, and cancer. Hepatic fibrogenesis is a complex process with interactions between different resident and non-resident heterogeneous liver cell populations, ultimately leading to deposition of extracellular matrix and organ failure. Shifts in cell phenotypes and functions involve pronounced transcriptional and protein synthesis changes that require metabolic adaptations in cellular substrate metabolism, including glucose and lipid metabolism, resembling changes associated with the Warburg effect in cancer cells. Cell activation and metabolic changes are regulated by metabolic stress responses, including the unfolded protein response, endoplasmic reticulum stress, autophagy, ferroptosis, and nuclear receptor signaling. These metabolic adaptations are crucial for inflammatory and fibrogenic activation of macrophages, lymphoid cells, and hepatic stellate cells. Modulation of these pathways, therefore, offers opportunities for novel therapeutic approaches to halt or even reverse liver fibrosis progression.
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Affiliation(s)
- Paul Horn
- Department of Hepatology and Gastroenterology, Charité - Universitätsmedizin Berlin, Campus Virchow-Klinikum and Campus Charité Mitte, Berlin, Germany; Berlin Institute of Health at Charité - Universitätsmedizin Berlin, BIH Biomedical Innovation Academy, BIH Charité Digital Clinician Scientist Program, Berlin, Germany
| | - Frank Tacke
- Department of Hepatology and Gastroenterology, Charité - Universitätsmedizin Berlin, Campus Virchow-Klinikum and Campus Charité Mitte, Berlin, Germany.
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Liu XY, Zhang W, Ma BF, Sun MM, Shang QH. Advances in Research on the Effectiveness and Mechanism of Active Ingredients from Traditional Chinese Medicine in Regulating Hepatic Stellate Cells Autophagy Against Hepatic Fibrosis. Drug Des Devel Ther 2024; 18:2715-2727. [PMID: 38974122 PMCID: PMC11227309 DOI: 10.2147/dddt.s467480] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2024] [Accepted: 06/10/2024] [Indexed: 07/09/2024] Open
Abstract
Hepatic fibrosis (HF) is a pathological process of structural and functional impairment of the liver and is a key component in the progression of chronic liver disease. There are no specific anti-hepatic fibrosis (anti-HF) drugs, and HF can only be improved or prevented by alleviating the cause. Autophagy of hepatic stellate cells (HSCs) is closely related to the development of HF. In recent years, traditional Chinese medicine (TCM) has achieved good therapeutic effects in the prevention and treatment of HF. Several active ingredients from TCM (AITCM) can regulate autophagy in HSCs to exert anti-HF effects through different pathways, but relevant reviews are lacking. This paper reviewed the research progress of AITCM regulating HSCs autophagy against HF, and also discussed the relationship between HSCs autophagy and HF, pointing out the problems and limitations of the current study, in order to provide references for the development of anti-HF drugs targeting HSCs autophagy in TCM. By reviewing the literature in PubMed, Web of Science, Embase, CNKI and other databases, we found that the relationship between autophagy of HSCs and HF is currently controversial. HSCs autophagy may promote HF by consuming lipid droplets (LDs) to provide energy for their activation. However, in contrast, inducing autophagy in HSCs can exert the anti-HF effect by stimulating their apoptosis or senescence, reducing type I collagen accumulation, inhibiting the extracellular vesicles release, degrading pro-fibrotic factors and other mechanisms. Some AITCM inhibit HSCs autophagy to resist HF, with the most promising direction being to target LDs. While, others induce HSCs autophagy to resist HF, with the most promising direction being to target HSCs apoptosis. Future research needs to focus on cell targeting research, autophagy targeting research and in vivo verification research, and to explore the reasons for the contradictory effects of HSCs autophagy on HF.
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Affiliation(s)
- Xin-Yu Liu
- College of First Clinical Medicine, Shandong University of Traditional Chinese Medicine, Jinan, Shandong, 250000, People’s Republic of China
| | - Wei Zhang
- Department of Liver Disease, The 960th Hospital of the PLA Joint Logistics Support Force, Jinan, Shandong, 250000, People’s Republic of China
| | - Bao-Feng Ma
- The third department of encephalopathy, Jinan Integrated Traditional Chinese and Western Medicine Hospital, Jinan, Shandong, 271100, People’s Republic of China
| | - Mi-Mi Sun
- Diagnosis and Treatment Center for Liver Diseases, Tai’an 88 Hospital, Tai’an, Shandong, 271000, People’s Republic of China
| | - Qing-Hua Shang
- Department of Liver Disease, The 960th Hospital of the PLA Joint Logistics Support Force, Jinan, Shandong, 250000, People’s Republic of China
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Lee CE, Kim JY, Yoon JS, Ko J. Role of Inositol-Requiring Enzyme 1 and Autophagy in the Pro-Fibrotic Mechanism Underlying Graves' Orbitopathy. Yonsei Med J 2024; 65:397-405. [PMID: 38910302 PMCID: PMC11199180 DOI: 10.3349/ymj.2023.0294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Revised: 01/02/2024] [Accepted: 01/25/2024] [Indexed: 06/25/2024] Open
Abstract
PURPOSE Orbital fibroblasts play key roles in the pathogenesis of Graves' orbitopathy (GO), and previous findings have shown that endoplasmic reticulum (ER) stress and autophagy also contribute to GO. In this study, we investigated the presently unclear roles of inositol-requiring enzyme 1 (IRE1) and related autophagy processes in the pro-fibrotic mechanism of GO. MATERIALS AND METHODS Orbital adipose/connective tissues were obtained from eight GO patients and six normal individuals during surgery. GO fibroblasts were transfected with IRE1 small-interfering RNA and treated with bafilomycin A1 (Baf-A1) to evaluate the inhibitory effects of ER stress and autophagy, and protein-expression levels were analyzed through western blotting after stimulation with transforming growth factor (TGF)-β. RESULTS TGF-β stimulation upregulated IRE1 in GO orbital fibroblasts, whereas silencing IRE1 suppressed fibrosis and autophagy responses. Similarly, Baf-A1, an inhibitor of late-phase autophagy, decreased the expression of pro-fibrotic proteins. CONCLUSION IRE1 mediates autophagy and the pro-fibrotic mechanism of GO, which provides a more comprehensive interpretation of GO pathogenesis and suggests potential therapeutic targets.
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Affiliation(s)
- Chae Eun Lee
- Department of Ophthalmology, Institute of Vision Research, Yonsei University College of Medicine, Seoul, Korea
- Siloam Eye Hospital, Seoul, Korea
| | - Ji-Young Kim
- Department of Ophthalmology, Institute of Vision Research, Yonsei University College of Medicine, Seoul, Korea
| | - Jin Sook Yoon
- Department of Ophthalmology, Institute of Vision Research, Yonsei University College of Medicine, Seoul, Korea
| | - JaeSang Ko
- Department of Ophthalmology, Institute of Vision Research, Yonsei University College of Medicine, Seoul, Korea.
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12
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Liu YB, Tan XH, Yang HH, Yang JT, Zhang CY, Jin L, Yang NSY, Guan CX, Zhou Y, Liu SK, Xiong JB. Wnt5a-mediated autophagy contributes to the epithelial-mesenchymal transition of human bronchial epithelial cells during asthma. Mol Med 2024; 30:93. [PMID: 38898476 PMCID: PMC11188189 DOI: 10.1186/s10020-024-00862-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2024] [Accepted: 06/12/2024] [Indexed: 06/21/2024] Open
Abstract
BACKGROUND The epithelial-mesenchymal transition (EMT) of human bronchial epithelial cells (HBECs) is essential for airway remodeling during asthma. Wnt5a has been implicated in various lung diseases, while its role in the EMT of HBECs during asthma is yet to be determined. This study sought to define whether Wnt5a initiated EMT, leading to airway remodeling through the induction of autophagy in HBECs. METHODS Microarray analysis was used to investigate the expression change of WNT5A in asthma patients. In parallel, EMT models were induced using 16HBE cells by exposing them to house dust mites (HDM) or interleukin-4 (IL-4), and then the expression of Wnt5a was observed. Using in vitro gain- and loss-of-function approaches via Wnt5a mimic peptide FOXY5 and Wnt5a inhibitor BOX5, the alterations in the expression of the epithelial marker E-cadherin and the mesenchymal marker protein were observed. Mechanistically, the Ca2+/CaMKII signaling pathway and autophagy were evaluated. An autophagy inhibitor 3-MA was used to examine Wnt5a in the regulation of autophagy during EMT. Furthermore, we used a CaMKII inhibitor KN-93 to determine whether Wnt5a induced autophagy overactivation and EMT via the Ca2+/CaMKII signaling pathway. RESULTS Asthma patients exhibited a significant increase in the gene expression of WNT5A compared to the healthy control. Upon HDM and IL-4 treatments, we observed that Wnt5a gene and protein expression levels were significantly increased in 16HBE cells. Interestingly, Wnt5a mimic peptide FOXY5 significantly inhibited E-cadherin and upregulated α-SMA, Collagen I, and autophagy marker proteins (Beclin1 and LC3-II). Rhodamine-phalloidin staining showed that FOXY5 resulted in a rearrangement of the cytoskeleton and an increase in the quantity of stress fibers in 16HBE cells. Importantly, blocking Wnt5a with BOX5 significantly inhibited autophagy and EMT induced by IL-4 in 16HBE cells. Mechanistically, autophagy inhibitor 3-MA and CaMKII inhibitor KN-93 reduced the EMT of 16HBE cells caused by FOXY5, as well as the increase in stress fibers, cell adhesion, and autophagy. CONCLUSION This study illustrates a new link in the Wnt5a-Ca2+/CaMKII-autophagy axis to triggering airway remodeling. Our findings may provide novel strategies for the treatment of EMT-related diseases.
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Affiliation(s)
- Yu-Biao Liu
- Department of Pulmonary and Critical Care Medicine, the Second Xiangya Hospital, Central South University, Changsha, Hunan, 410011, China
- Department of Physiology, School of Basic Medical Science, Central South University, Changsha, Hunan, 410078, China
- Key Laboratory of General University of Hunan Province, Basic and Clinic Research in Major Respiratory Disease, Changsha, Hunan, 410078, China
| | - Xiao-Hua Tan
- Experimental Center of Medical Morphology, School of Basic Medicine Science, Central South University, Changsha, Hunan, 410078, China
| | - Hui-Hui Yang
- Department of Physiology, School of Basic Medical Science, Central South University, Changsha, Hunan, 410078, China
- Key Laboratory of General University of Hunan Province, Basic and Clinic Research in Major Respiratory Disease, Changsha, Hunan, 410078, China
| | - Jin-Tong Yang
- Key Laboratory of General University of Hunan Province, Basic and Clinic Research in Major Respiratory Disease, Changsha, Hunan, 410078, China
| | - Chen-Yu Zhang
- Department of Physiology, School of Basic Medical Science, Central South University, Changsha, Hunan, 410078, China
- Key Laboratory of General University of Hunan Province, Basic and Clinic Research in Major Respiratory Disease, Changsha, Hunan, 410078, China
| | - Ling Jin
- Department of Physiology, School of Basic Medical Science, Central South University, Changsha, Hunan, 410078, China
- Key Laboratory of General University of Hunan Province, Basic and Clinic Research in Major Respiratory Disease, Changsha, Hunan, 410078, China
| | - Nan-Shi-Yu Yang
- Department of Physiology, School of Basic Medical Science, Central South University, Changsha, Hunan, 410078, China
- Key Laboratory of General University of Hunan Province, Basic and Clinic Research in Major Respiratory Disease, Changsha, Hunan, 410078, China
| | - Cha-Xiang Guan
- Department of Physiology, School of Basic Medical Science, Central South University, Changsha, Hunan, 410078, China
- Key Laboratory of General University of Hunan Province, Basic and Clinic Research in Major Respiratory Disease, Changsha, Hunan, 410078, China
| | - Yong Zhou
- Department of Physiology, School of Basic Medical Science, Central South University, Changsha, Hunan, 410078, China
- Key Laboratory of General University of Hunan Province, Basic and Clinic Research in Major Respiratory Disease, Changsha, Hunan, 410078, China
| | - Shao-Kun Liu
- Department of Pulmonary and Critical Care Medicine, the Second Xiangya Hospital, Central South University, Changsha, Hunan, 410011, China.
- Research Unit of Respiratory Disease, Central South University, Changsha, Hunan, 410011, China.
- Clinical Medical Research Center for Pulmonary and Critical Care Medicine in Hunan Province, Changsha, Hunan, 410011, China.
- Diagnosis and Treatment Center of Respiratory Disease, Central South University, Changsha, Hunan, 410011, China.
| | - Jian-Bing Xiong
- Department of Emergency, Xiangya Hospital, Central South University, Changsha, Hunan, 410078, China.
- National Clinical Research Center of Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, 410078, China.
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13
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Damerau A, Rosenow E, Alkhoury D, Buttgereit F, Gaber T. Fibrotic pathways and fibroblast-like synoviocyte phenotypes in osteoarthritis. Front Immunol 2024; 15:1385006. [PMID: 38895122 PMCID: PMC11183113 DOI: 10.3389/fimmu.2024.1385006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2024] [Accepted: 05/14/2024] [Indexed: 06/21/2024] Open
Abstract
Osteoarthritis (OA) is the most common form of arthritis, characterized by osteophyte formation, cartilage degradation, and structural and cellular alterations of the synovial membrane. Activated fibroblast-like synoviocytes (FLS) of the synovial membrane have been identified as key drivers, secreting humoral mediators that maintain inflammatory processes, proteases that cause cartilage and bone destruction, and factors that drive fibrotic processes. In normal tissue repair, fibrotic processes are terminated after the damage has been repaired. In fibrosis, tissue remodeling and wound healing are exaggerated and prolonged. Various stressors, including aging, joint instability, and inflammation, lead to structural damage of the joint and micro lesions within the synovial tissue. One result is the reduced production of synovial fluid (lubricants), which reduces the lubricity of the cartilage areas, leading to cartilage damage. In the synovial tissue, a wound-healing cascade is initiated by activating macrophages, Th2 cells, and FLS. The latter can be divided into two major populations. The destructive thymocyte differentiation antigen (THY)1─ phenotype is restricted to the synovial lining layer. In contrast, the THY1+ phenotype of the sublining layer is classified as an invasive one with immune effector function driving synovitis. The exact mechanisms involved in the transition of fibroblasts into a myofibroblast-like phenotype that drives fibrosis remain unclear. The review provides an overview of the phenotypes and spatial distribution of FLS in the synovial membrane of OA, describes the mechanisms of fibroblast into myofibroblast activation, and the metabolic alterations of myofibroblast-like cells.
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Affiliation(s)
- Alexandra Damerau
- Department of Rheumatology and Clinical Immunology, Charité – Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt Universität zu Berlin, Berlin, Germany
- German Rheumatism Research Center Berlin, a Leibniz Institute, Glucocorticoids - Bioenergetics - 3R Research Lab, Berlin, Germany
| | - Emely Rosenow
- Department of Rheumatology and Clinical Immunology, Charité – Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt Universität zu Berlin, Berlin, Germany
| | - Dana Alkhoury
- Department of Rheumatology and Clinical Immunology, Charité – Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt Universität zu Berlin, Berlin, Germany
| | - Frank Buttgereit
- Department of Rheumatology and Clinical Immunology, Charité – Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt Universität zu Berlin, Berlin, Germany
- German Rheumatism Research Center Berlin, a Leibniz Institute, Glucocorticoids - Bioenergetics - 3R Research Lab, Berlin, Germany
| | - Timo Gaber
- Department of Rheumatology and Clinical Immunology, Charité – Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt Universität zu Berlin, Berlin, Germany
- German Rheumatism Research Center Berlin, a Leibniz Institute, Glucocorticoids - Bioenergetics - 3R Research Lab, Berlin, Germany
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14
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Zhang Y, Tian T, Liang C, Wang J, Zhang J, Tian S, Xie R, Yang T, Han B. Lysine specific demethylase 1 inhibits sodium arsenite activation of HSCs by regulating SESN2/AMPK/ULK1 signaling pathway activity. ENVIRONMENTAL TOXICOLOGY 2024; 39:3563-3577. [PMID: 38477077 DOI: 10.1002/tox.24184] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2023] [Revised: 01/10/2024] [Accepted: 02/10/2024] [Indexed: 03/14/2024]
Abstract
Lysine specific demethylase 1 (LSD1) is a histone demethylase that specifically catalyzes the demethylation of histone H3K4 (H3K4me1/2) and regulates gene expression. In addition, it can mediate the process of autophagy through its demethylase activity. Sestrin2 (SESN2) is a stress-induced protein and a positive regulator of autophagy. In NaAsO2-induced mouse fibrotic livers and activated hepatic stellate cells (HSCs), LSD1 expression is decreased, SESN2 expression is increased, and autophagy levels are also increased. Overexpression of LSD1 and silencing of SESN2 decreased the level of autophagy and attenuated the activation of HSCs induced by NaAsO2. LSD1 promoted SESN2 gene transcription by increasing H3K4me1/2 in the SESN2 promoter region. 3-methyladenine (3-MA) and chloroquine were used to inhibit autophagy of HSCs, and the degree of activation was also alleviated. Taken together, LSD1 positively regulates SESN2 by increasing H3K4me1/2 enrichment in the SESN2 promoter region, which in turn increases the level of autophagy and promotes the activation of HSCs. Our results may provide new evidence for the importance of LSD1 in the process of autophagy and activation of HSCs induced by arsenic poisoning. Increasing the expression and activity of LSD1 is expected to be an effective way to reverse the autophagy and activation of HSCs induced by arsenic poisoning.
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Affiliation(s)
- Yingwan Zhang
- Department of Pathophysiology, College of Basic Medical Sciences, Guizhou Medical University, Guiyang, Guizhou, China
- Guizhou Provincial Key Laboratory of Pathogenesis and Drug Research on Common Chronic Diseases, Guizhou Medical University, Guiyang, Guizhou, China
| | - Tian Tian
- Department of Eugenic Genetics, Guiyang Maternal and Child Health Care Hospital, Guiyang, Guizhou, China
| | - Cai Liang
- Southwest Hospital, Army Medical University, Chongqing, China
| | - Junli Wang
- The Second People's Hospital of Guiyang, Guizhou, China
| | - Jiayuan Zhang
- Department of Pathophysiology, College of Basic Medical Sciences, Guizhou Medical University, Guiyang, Guizhou, China
- Guizhou Provincial Key Laboratory of Pathogenesis and Drug Research on Common Chronic Diseases, Guizhou Medical University, Guiyang, Guizhou, China
| | - Shanshan Tian
- Department of Pathophysiology, College of Basic Medical Sciences, Guizhou Medical University, Guiyang, Guizhou, China
- Guizhou Provincial Key Laboratory of Pathogenesis and Drug Research on Common Chronic Diseases, Guizhou Medical University, Guiyang, Guizhou, China
| | - Rujia Xie
- Department of Pathophysiology, College of Basic Medical Sciences, Guizhou Medical University, Guiyang, Guizhou, China
- Guizhou Provincial Key Laboratory of Pathogenesis and Drug Research on Common Chronic Diseases, Guizhou Medical University, Guiyang, Guizhou, China
| | - Ting Yang
- Department of Pathophysiology, College of Basic Medical Sciences, Guizhou Medical University, Guiyang, Guizhou, China
- Guizhou Provincial Key Laboratory of Pathogenesis and Drug Research on Common Chronic Diseases, Guizhou Medical University, Guiyang, Guizhou, China
| | - Bing Han
- Department of Pathophysiology, College of Basic Medical Sciences, Guizhou Medical University, Guiyang, Guizhou, China
- Guizhou Provincial Key Laboratory of Pathogenesis and Drug Research on Common Chronic Diseases, Guizhou Medical University, Guiyang, Guizhou, China
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15
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Yuan Y, Li J, Lu X, Chen M, Liang H, Chen XP, Long X, Zhang B, Gong S, Huang X, Zhao J, Chen Q. Autophagy in hepatic progenitor cells modulates exosomal miRNAs to inhibit liver fibrosis in schistosomiasis. Front Med 2024; 18:538-557. [PMID: 38769281 DOI: 10.1007/s11684-024-1079-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2024] [Accepted: 03/27/2024] [Indexed: 05/22/2024]
Abstract
Schistosoma infection is one of the major causes of liver fibrosis. Emerging roles of hepatic progenitor cells (HPCs) in the pathogenesis of liver fibrosis have been identified. Nevertheless, the precise mechanism underlying the role of HPCs in liver fibrosis in schistosomiasis remains unclear. This study examined how autophagy in HPCs affects schistosomiasis-induced liver fibrosis by modulating exosomal miRNAs. The activation of HPCs was verified by immunohistochemistry (IHC) and immunofluorescence (IF) staining in fibrotic liver from patients and mice with Schistosoma japonicum infection. By coculturing HPCs with hepatic stellate cells (HSCs) and assessing the autophagy level in HPCs by proteomic analysis and in vitro phenotypic assays, we found that impaired autophagy degradation in these activated HPCs was mediated by lysosomal dysfunction. Blocking autophagy by the autophagy inhibitor chloroquine (CQ) significantly diminished liver fibrosis and granuloma formation in S. japonicum-infected mice. HPC-secreted extracellular vehicles (EVs) were further isolated and studied by miRNA sequencing. miR-1306-3p, miR-493-3p, and miR-34a-5p were identified, and their distribution into EVs was inhibited due to impaired autophagy in HPCs, which contributed to suppressing HSC activation. In conclusion, we showed that the altered autophagy process upon HPC activation may prevent liver fibrosis by modulating exosomal miRNA release and inhibiting HSC activation in schistosomiasis. Targeting the autophagy degradation process may be a therapeutic strategy for liver fibrosis during Schistosoma infection.
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Affiliation(s)
- Yue Yuan
- Division of Gastroenterology, Department of Internal Medicine at Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Jiaxuan Li
- Division of Gastroenterology, Department of Internal Medicine at Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Xun Lu
- Hepatic Surgery Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
- Hubei Key Laboratory of Hepato-Pancreato-Biliary Diseases, Wuhan, 430030, China
| | - Min Chen
- Division of Gastroenterology, Department of Internal Medicine at Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Huifang Liang
- Hepatic Surgery Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
- Hubei Key Laboratory of Hepato-Pancreato-Biliary Diseases, Wuhan, 430030, China
| | - Xiao-Ping Chen
- Hepatic Surgery Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
- Hubei Key Laboratory of Hepato-Pancreato-Biliary Diseases, Wuhan, 430030, China
| | - Xin Long
- Hepatic Surgery Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
- Hubei Key Laboratory of Hepato-Pancreato-Biliary Diseases, Wuhan, 430030, China
| | - Bixiang Zhang
- Hepatic Surgery Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
- Hubei Key Laboratory of Hepato-Pancreato-Biliary Diseases, Wuhan, 430030, China
| | - Song Gong
- Department of Trauma Surgery, Tongji Trauma Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Xiaowei Huang
- Division of Gastroenterology, Department of Internal Medicine at Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Jianping Zhao
- Hepatic Surgery Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China.
- Hubei Key Laboratory of Hepato-Pancreato-Biliary Diseases, Wuhan, 430030, China.
| | - Qian Chen
- Division of Gastroenterology, Department of Internal Medicine at Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China.
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16
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Shen W, Yang M, Chen H, He C, Li H, Yang X, Zhuo J, Lin Z, Hu Z, Lu D, Xu X. FGF21-mediated autophagy: Remodeling the homeostasis in response to stress in liver diseases. Genes Dis 2024; 11:101027. [PMID: 38292187 PMCID: PMC10825283 DOI: 10.1016/j.gendis.2023.05.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Revised: 04/23/2023] [Accepted: 05/09/2023] [Indexed: 02/01/2024] Open
Abstract
Liver diseases are worldwide problems closely associated with various stresses, such as endoplasmic reticulum stress. The exact interplay between stress and liver diseases remains unclear. Autophagy plays an essential role in maintaining homeostasis, and recent studies indicate tight crosstalk between stress and autophagy in liver diseases. Once the balance between damage and autophagy is broken, autophagy can no longer resist injury or maintain homeostasis. In recent years, FGF21 (fibroblast growth factor 21)-induced autophagy has attracted much attention. FGF21 is regarded as a stress hormone and can be up-regulated by an abundance of signaling pathways in response to stress. Also, increased FGF21 activates autophagy by a complicated signaling network in which mTOR plays a pivotal role. This review summarizes the mechanism of FGF21-mediated autophagy and its derived application in the defense of stress in liver diseases and offers a glimpse into its promising prospect in future clinical practice.
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Affiliation(s)
- Wei Shen
- Zhejiang University School of Medicine, Hangzhou, Zhejiang 310058, China
- Key Laboratory of Integrated Oncology and Intelligent Medicine of Zhejiang Province, Department of Hepatobiliary and Pancreatic Surgery, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310006, China
- The Institute for Organ Repair and Regenerative Medicine of Hangzhou, Hangzhou, Zhejiang 310006, China
- Institute of Organ Transplantation, Zhejiang University, Hangzhou, Zhejiang 310003, China
| | - Modan Yang
- Zhejiang University School of Medicine, Hangzhou, Zhejiang 310058, China
- Key Laboratory of Integrated Oncology and Intelligent Medicine of Zhejiang Province, Department of Hepatobiliary and Pancreatic Surgery, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310006, China
- The Institute for Organ Repair and Regenerative Medicine of Hangzhou, Hangzhou, Zhejiang 310006, China
- Institute of Organ Transplantation, Zhejiang University, Hangzhou, Zhejiang 310003, China
| | - Hao Chen
- Zhejiang University School of Medicine, Hangzhou, Zhejiang 310058, China
- Key Laboratory of Integrated Oncology and Intelligent Medicine of Zhejiang Province, Department of Hepatobiliary and Pancreatic Surgery, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310006, China
- The Institute for Organ Repair and Regenerative Medicine of Hangzhou, Hangzhou, Zhejiang 310006, China
- Institute of Organ Transplantation, Zhejiang University, Hangzhou, Zhejiang 310003, China
| | - Chiyu He
- Zhejiang University School of Medicine, Hangzhou, Zhejiang 310058, China
- Key Laboratory of Integrated Oncology and Intelligent Medicine of Zhejiang Province, Department of Hepatobiliary and Pancreatic Surgery, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310006, China
- The Institute for Organ Repair and Regenerative Medicine of Hangzhou, Hangzhou, Zhejiang 310006, China
- Institute of Organ Transplantation, Zhejiang University, Hangzhou, Zhejiang 310003, China
| | - Huigang Li
- Zhejiang University School of Medicine, Hangzhou, Zhejiang 310058, China
- Key Laboratory of Integrated Oncology and Intelligent Medicine of Zhejiang Province, Department of Hepatobiliary and Pancreatic Surgery, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310006, China
- The Institute for Organ Repair and Regenerative Medicine of Hangzhou, Hangzhou, Zhejiang 310006, China
- Institute of Organ Transplantation, Zhejiang University, Hangzhou, Zhejiang 310003, China
| | - Xinyu Yang
- Zhejiang University School of Medicine, Hangzhou, Zhejiang 310058, China
- Key Laboratory of Integrated Oncology and Intelligent Medicine of Zhejiang Province, Department of Hepatobiliary and Pancreatic Surgery, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310006, China
- The Institute for Organ Repair and Regenerative Medicine of Hangzhou, Hangzhou, Zhejiang 310006, China
- Institute of Organ Transplantation, Zhejiang University, Hangzhou, Zhejiang 310003, China
| | - Jianyong Zhuo
- Zhejiang University School of Medicine, Hangzhou, Zhejiang 310058, China
- Key Laboratory of Integrated Oncology and Intelligent Medicine of Zhejiang Province, Department of Hepatobiliary and Pancreatic Surgery, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310006, China
- The Institute for Organ Repair and Regenerative Medicine of Hangzhou, Hangzhou, Zhejiang 310006, China
- Institute of Organ Transplantation, Zhejiang University, Hangzhou, Zhejiang 310003, China
| | - Zuyuan Lin
- Zhejiang University School of Medicine, Hangzhou, Zhejiang 310058, China
- Key Laboratory of Integrated Oncology and Intelligent Medicine of Zhejiang Province, Department of Hepatobiliary and Pancreatic Surgery, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310006, China
- The Institute for Organ Repair and Regenerative Medicine of Hangzhou, Hangzhou, Zhejiang 310006, China
- Institute of Organ Transplantation, Zhejiang University, Hangzhou, Zhejiang 310003, China
| | - Zhihang Hu
- Zhejiang University School of Medicine, Hangzhou, Zhejiang 310058, China
- Key Laboratory of Integrated Oncology and Intelligent Medicine of Zhejiang Province, Department of Hepatobiliary and Pancreatic Surgery, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310006, China
- The Institute for Organ Repair and Regenerative Medicine of Hangzhou, Hangzhou, Zhejiang 310006, China
- Institute of Organ Transplantation, Zhejiang University, Hangzhou, Zhejiang 310003, China
| | - Di Lu
- Zhejiang University School of Medicine, Hangzhou, Zhejiang 310058, China
- Key Laboratory of Integrated Oncology and Intelligent Medicine of Zhejiang Province, Department of Hepatobiliary and Pancreatic Surgery, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310006, China
- The Institute for Organ Repair and Regenerative Medicine of Hangzhou, Hangzhou, Zhejiang 310006, China
- Institute of Organ Transplantation, Zhejiang University, Hangzhou, Zhejiang 310003, China
| | - Xiao Xu
- Zhejiang University School of Medicine, Hangzhou, Zhejiang 310058, China
- The Institute for Organ Repair and Regenerative Medicine of Hangzhou, Hangzhou, Zhejiang 310006, China
- Institute of Organ Transplantation, Zhejiang University, Hangzhou, Zhejiang 310003, China
- National Center for Healthcare Quality Management in Liver Transplant, Hangzhou, Zhejiang 310003, China
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17
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Wang X, Liu Q, Yu HT, Xie JZ, Zhao JN, Fang ZT, Qu M, Zhang Y, Yang Y, Wang JZ. A positive feedback inhibition of isocitrate dehydrogenase 3β on paired-box gene 6 promotes Alzheimer-like pathology. Signal Transduct Target Ther 2024; 9:105. [PMID: 38679634 PMCID: PMC11056379 DOI: 10.1038/s41392-024-01812-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Revised: 02/28/2024] [Accepted: 03/20/2024] [Indexed: 05/01/2024] Open
Abstract
Impaired brain glucose metabolism is an early indicator of Alzheimer's disease (AD); however, the fundamental mechanism is unknown. In this study, we found a substantial decline in isocitrate dehydrogenase 3β (IDH3β) levels, a critical tricarboxylic acid cycle enzyme, in AD patients and AD-transgenic mice's brains. Further investigations demonstrated that the knockdown of IDH3β induced oxidation-phosphorylation uncoupling, leading to reduced energy metabolism and lactate accumulation. The resulting increased lactate, a source of lactyl, was found to promote histone lactylation, thereby enhancing the expression of paired-box gene 6 (PAX6). As an inhibitory transcription factor of IDH3β, the elevated PAX6 in turn inhibited the expression of IDH3β, leading to tau hyperphosphorylation, synapse impairment, and learning and memory deficits resembling those seen in AD. In AD-transgenic mice, upregulating IDH3β and downregulating PAX6 were found to improve cognitive functioning and reverse AD-like pathologies. Collectively, our data suggest that impaired oxidative phosphorylation accelerates AD progression via a positive feedback inhibition loop of IDH3β-lactate-PAX6-IDH3β. Breaking this loop by upregulating IDH3β or downregulating PAX6 attenuates AD neurodegeneration and cognitive impairments.
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Affiliation(s)
- Xin Wang
- Department of Pathophysiology, School of Basic Medicine, Key Laboratory of Education Ministry of China/Hubei Province for Neurological Disorders, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Qian Liu
- Department of Pathophysiology, School of Basic Medicine, Key Laboratory of Education Ministry of China/Hubei Province for Neurological Disorders, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Hai-Tao Yu
- Department of Pathophysiology, School of Basic Medicine, Key Laboratory of Education Ministry of China/Hubei Province for Neurological Disorders, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Department of Fundamental Medicine, Wuxi School of Medicine, Jiangnan University, Wuxi, Jiangsu, 214122, China
| | - Jia-Zhao Xie
- Department of Pathophysiology, School of Basic Medicine, Key Laboratory of Education Ministry of China/Hubei Province for Neurological Disorders, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jun-Ning Zhao
- Department of Pathophysiology, School of Basic Medicine, Key Laboratory of Education Ministry of China/Hubei Province for Neurological Disorders, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Zhi-Ting Fang
- Department of Pathophysiology, School of Basic Medicine, Key Laboratory of Education Ministry of China/Hubei Province for Neurological Disorders, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Min Qu
- Hubei Provincial Key Laboratory for Applied Toxicology, Hubei Provincial Center for Disease Control and Prevention, Hubei Provincial Academy of Preventive Medicine, Wuhan, 430000, China
| | - Yao Zhang
- Endocrine Department of Liyuan Hospital; Key Laboratory of Ministry of Education of China for Neurological Disorders, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430077, China.
| | - Ying Yang
- Department of Pathophysiology, School of Basic Medicine, Key Laboratory of Education Ministry of China/Hubei Province for Neurological Disorders, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
| | - Jian-Zhi Wang
- Department of Pathophysiology, School of Basic Medicine, Key Laboratory of Education Ministry of China/Hubei Province for Neurological Disorders, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
- Co-innovation Center of Neuroregeneration, Nantong University, Nantong, 226000, China.
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Guo C, Lai L, Ma B, Huang Q, Wang Z. Notoginsenoside R1 targets PPAR-γ to inhibit hepatic stellate cell activation and ameliorates liver fibrosis. Exp Cell Res 2024; 437:113992. [PMID: 38492634 DOI: 10.1016/j.yexcr.2024.113992] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2023] [Revised: 01/25/2024] [Accepted: 03/06/2024] [Indexed: 03/18/2024]
Abstract
BACKGROUND Hepatic fibrosis, a common pathological process that occurs in end-stage liver diseases, is a serious public health problem and lacks effective therapy. Notoginsenoside R1 (NR1) is a small molecule derived from the traditional Chinese medicine Sanqi, exhibiting great potential in treating diverse metabolie disorders. Here we aimed to enquired the role of NR1 in liver fibrosis and its underlying mechanism in hepatoprotective effects. METHODS We investigated the anti-fibrosis effect of NR1 using CCl4-induced mouse mode of liver fibrosis as well as TGF-β1-activated JS-1, LX-2 cells and primary hepatic stellate cell. Cell samples treated by NR1 were collected for transcriptomic profiling analysis. PPAR-γ mediated TGF-β1/Smads signaling was examined using PPAR-γ selective inhibitors and agonists intervention, immunofluorescence staining and western blot analysis. Additionally, we designed and studied the binding of NR1 to PPAR-γ using molecular docking. RESULTS NR1 obviously attenuated liver histological damage, reduced serum ALT, AST levels, and decreased liver fibrogenesis markers in mouse mode. Mechanistically, NR1 elevated PPAR-γ and decreased TGF-β1, p-Smad2/3 expression. The TGF-β1/Smads signaling pathway and fibrotic phenotype were altered in JS-1 cells after using PPAR-γ selective inhibitors and agonists respectively, confirming PPAR-γ played a pivotal protection role inNR1 treating liver fibrosis. Further molecular docking indicated NR1 had a strong binding tendency to PPAR-γ with minimum free energy. CONCLUSIONS NR1 attenuates hepatic stellate cell activation and hepatic fibrosis by elevating PPAR-γ to inhibit TGF-β1/Smads signalling. NR1 may be a potential candidate compound for reliving liver fibrosis.
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Affiliation(s)
- Cheng Guo
- Endoscopy Center, Department of Gastroenterology, Shanghai East Hospital, School of Medicine, Tongji University, Shanghai, 200120, China
| | - Linying Lai
- Department of Gastroenterology, Tongji Hospital, School of Medicine, Tongji University, Shanghai, 200092, China
| | - Boyu Ma
- Department of Gastroenterology, Tongji Hospital, School of Medicine, Tongji University, Shanghai, 200092, China
| | - Qian Huang
- Shanghai Pudong Weifang Community Health Center, Shanghai, 200120, China.
| | - Zhirong Wang
- Department of Gastroenterology, Tongji Hospital, School of Medicine, Tongji University, Shanghai, 200092, China.
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Liu J, Xiao Y, Cao L, Lu S, Zhang S, Yang R, Wang Y, Zhang N, Yu Y, Wang X, Guo W, Wang Z, Xu H, Xing C, Song X, Cao L. Insights on E1-like enzyme ATG7: functional regulation and relationships with aging-related diseases. Commun Biol 2024; 7:382. [PMID: 38553562 PMCID: PMC10980737 DOI: 10.1038/s42003-024-06080-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2023] [Accepted: 03/20/2024] [Indexed: 04/02/2024] Open
Abstract
Autophagy is a dynamic self-renovation biological process that maintains cell homeostasis and is responsible for the quality control of proteins, organelles, and energy metabolism. The E1-like ubiquitin-activating enzyme autophagy-related gene 7 (ATG7) is a critical factor that initiates classic autophagy reactions by promoting the formation and extension of autophagosome membranes. Recent studies have identified the key functions of ATG7 in regulating the cell cycle, apoptosis, and metabolism associated with the occurrence and development of multiple diseases. This review summarizes how ATG7 is precisely programmed by genetic, transcriptional, and epigenetic modifications in cells and the relationship between ATG7 and aging-related diseases.
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Affiliation(s)
- Jingwei Liu
- The College of Basic Medical Science, Health Sciences Institute, China Medical University, Shenyang, Liaoning, China
- Key Laboratory of Cell Biology of Ministry of Public Health, Key Laboratory of Medical Cell Biology of Ministry of Education, Key Laboratory of Precision Diagnosis and Treatment of Gastrointestinal Tumors (China Medical University), Ministry of Education, Liaoning Province Collaborative Innovation Center of Aging Related Disease Diagnosis and Treatment and Prevention, China Medical University, Shenyang, Liaoning, China
- Department of Anus and Intestine Surgery, First Affiliated Hospital of China Medical University, Shenyang, Liaoning, China
| | - Yutong Xiao
- The College of Basic Medical Science, Health Sciences Institute, China Medical University, Shenyang, Liaoning, China
- Key Laboratory of Cell Biology of Ministry of Public Health, Key Laboratory of Medical Cell Biology of Ministry of Education, Key Laboratory of Precision Diagnosis and Treatment of Gastrointestinal Tumors (China Medical University), Ministry of Education, Liaoning Province Collaborative Innovation Center of Aging Related Disease Diagnosis and Treatment and Prevention, China Medical University, Shenyang, Liaoning, China
| | - Liangzi Cao
- The College of Basic Medical Science, Health Sciences Institute, China Medical University, Shenyang, Liaoning, China
- Key Laboratory of Cell Biology of Ministry of Public Health, Key Laboratory of Medical Cell Biology of Ministry of Education, Key Laboratory of Precision Diagnosis and Treatment of Gastrointestinal Tumors (China Medical University), Ministry of Education, Liaoning Province Collaborative Innovation Center of Aging Related Disease Diagnosis and Treatment and Prevention, China Medical University, Shenyang, Liaoning, China
| | - Songming Lu
- The College of Basic Medical Science, Health Sciences Institute, China Medical University, Shenyang, Liaoning, China
- Key Laboratory of Cell Biology of Ministry of Public Health, Key Laboratory of Medical Cell Biology of Ministry of Education, Key Laboratory of Precision Diagnosis and Treatment of Gastrointestinal Tumors (China Medical University), Ministry of Education, Liaoning Province Collaborative Innovation Center of Aging Related Disease Diagnosis and Treatment and Prevention, China Medical University, Shenyang, Liaoning, China
| | - Siyi Zhang
- The College of Basic Medical Science, Health Sciences Institute, China Medical University, Shenyang, Liaoning, China
- Key Laboratory of Cell Biology of Ministry of Public Health, Key Laboratory of Medical Cell Biology of Ministry of Education, Key Laboratory of Precision Diagnosis and Treatment of Gastrointestinal Tumors (China Medical University), Ministry of Education, Liaoning Province Collaborative Innovation Center of Aging Related Disease Diagnosis and Treatment and Prevention, China Medical University, Shenyang, Liaoning, China
| | - Ruohan Yang
- The College of Basic Medical Science, Health Sciences Institute, China Medical University, Shenyang, Liaoning, China
- Key Laboratory of Cell Biology of Ministry of Public Health, Key Laboratory of Medical Cell Biology of Ministry of Education, Key Laboratory of Precision Diagnosis and Treatment of Gastrointestinal Tumors (China Medical University), Ministry of Education, Liaoning Province Collaborative Innovation Center of Aging Related Disease Diagnosis and Treatment and Prevention, China Medical University, Shenyang, Liaoning, China
| | - Yubang Wang
- The College of Basic Medical Science, Health Sciences Institute, China Medical University, Shenyang, Liaoning, China
- Key Laboratory of Cell Biology of Ministry of Public Health, Key Laboratory of Medical Cell Biology of Ministry of Education, Key Laboratory of Precision Diagnosis and Treatment of Gastrointestinal Tumors (China Medical University), Ministry of Education, Liaoning Province Collaborative Innovation Center of Aging Related Disease Diagnosis and Treatment and Prevention, China Medical University, Shenyang, Liaoning, China
| | - Naijin Zhang
- The College of Basic Medical Science, Health Sciences Institute, China Medical University, Shenyang, Liaoning, China
- Department of Cardiology, First Hospital of China Medical University, Key Laboratory of Environmental Stress and Chronic Disease Control and Prevention, Ministry of Education, China Medical University, Shenyang, Liaoning, China
| | - Yang Yu
- The College of Basic Medical Science, Health Sciences Institute, China Medical University, Shenyang, Liaoning, China
- Key Laboratory of Cell Biology of Ministry of Public Health, Key Laboratory of Medical Cell Biology of Ministry of Education, Key Laboratory of Precision Diagnosis and Treatment of Gastrointestinal Tumors (China Medical University), Ministry of Education, Liaoning Province Collaborative Innovation Center of Aging Related Disease Diagnosis and Treatment and Prevention, China Medical University, Shenyang, Liaoning, China
| | - Xiwen Wang
- Department of Thoracic Surgery, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
| | - Wendong Guo
- The College of Basic Medical Science, Health Sciences Institute, China Medical University, Shenyang, Liaoning, China
- Key Laboratory of Cell Biology of Ministry of Public Health, Key Laboratory of Medical Cell Biology of Ministry of Education, Key Laboratory of Precision Diagnosis and Treatment of Gastrointestinal Tumors (China Medical University), Ministry of Education, Liaoning Province Collaborative Innovation Center of Aging Related Disease Diagnosis and Treatment and Prevention, China Medical University, Shenyang, Liaoning, China
| | - Zhuo Wang
- The College of Basic Medical Science, Health Sciences Institute, China Medical University, Shenyang, Liaoning, China
- Key Laboratory of Cell Biology of Ministry of Public Health, Key Laboratory of Medical Cell Biology of Ministry of Education, Key Laboratory of Precision Diagnosis and Treatment of Gastrointestinal Tumors (China Medical University), Ministry of Education, Liaoning Province Collaborative Innovation Center of Aging Related Disease Diagnosis and Treatment and Prevention, China Medical University, Shenyang, Liaoning, China
| | - Hongde Xu
- The College of Basic Medical Science, Health Sciences Institute, China Medical University, Shenyang, Liaoning, China.
- Key Laboratory of Cell Biology of Ministry of Public Health, Key Laboratory of Medical Cell Biology of Ministry of Education, Key Laboratory of Precision Diagnosis and Treatment of Gastrointestinal Tumors (China Medical University), Ministry of Education, Liaoning Province Collaborative Innovation Center of Aging Related Disease Diagnosis and Treatment and Prevention, China Medical University, Shenyang, Liaoning, China.
| | - Chengzhong Xing
- Department of Anus and Intestine Surgery, First Affiliated Hospital of China Medical University, Shenyang, Liaoning, China.
| | - Xiaoyu Song
- The College of Basic Medical Science, Health Sciences Institute, China Medical University, Shenyang, Liaoning, China.
- Key Laboratory of Cell Biology of Ministry of Public Health, Key Laboratory of Medical Cell Biology of Ministry of Education, Key Laboratory of Precision Diagnosis and Treatment of Gastrointestinal Tumors (China Medical University), Ministry of Education, Liaoning Province Collaborative Innovation Center of Aging Related Disease Diagnosis and Treatment and Prevention, China Medical University, Shenyang, Liaoning, China.
| | - Liu Cao
- The College of Basic Medical Science, Health Sciences Institute, China Medical University, Shenyang, Liaoning, China.
- Key Laboratory of Cell Biology of Ministry of Public Health, Key Laboratory of Medical Cell Biology of Ministry of Education, Key Laboratory of Precision Diagnosis and Treatment of Gastrointestinal Tumors (China Medical University), Ministry of Education, Liaoning Province Collaborative Innovation Center of Aging Related Disease Diagnosis and Treatment and Prevention, China Medical University, Shenyang, Liaoning, China.
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Jussila A, Zhang B, Kirti S, Atit R. Tissue fibrosis associated depletion of lipid-filled cells. Exp Dermatol 2024; 33:e15054. [PMID: 38519432 PMCID: PMC10977660 DOI: 10.1111/exd.15054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Revised: 02/06/2024] [Accepted: 02/29/2024] [Indexed: 03/24/2024]
Abstract
Fibrosis is primarily described as the deposition of excessive extracellular matrix, but in many tissues it also involves a loss of lipid or lipid-filled cells. Lipid-filled cells are critical to tissue function and integrity in many tissues including the skin and lungs. Thus, loss or depletion of lipid-filled cells during fibrogenesis, has implications for tissue function. In some contexts, lipid-filled cells can impact ECM composition and stability, highlighting their importance in fibrotic transformation. Recent papers in fibrosis address this newly recognized fibrotic lipodystrophy phenomenon. Even in disparate tissues, common mechanisms are emerging to explain fibrotic lipodystrophy. These findings have implications for fibrosis in tissues composed of fibroblast and lipid-filled cell populations such as skin, lung, and liver. In this review, we will discuss the roles of lipid-containing cells, their reduction/loss during fibrotic transformation, and the mechanisms of that loss in the skin and lungs.
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Affiliation(s)
- Anna Jussila
- Department of Biology, College of Arts and Sciences, Case Western Reserve University, Cleveland, Ohio, USA
| | - Brian Zhang
- Department of Biology, College of Arts and Sciences, Case Western Reserve University, Cleveland, Ohio, USA
| | - Sakin Kirti
- Department of Biology, College of Arts and Sciences, Case Western Reserve University, Cleveland, Ohio, USA
| | - Radhika Atit
- Department of Biology, College of Arts and Sciences, Case Western Reserve University, Cleveland, Ohio, USA
- Department of Genetics and Genome Sciences, School of Medicine, Case Western Reserve University, Cleveland, Ohio, USA
- Department of Dermatology, School of Medicine, Case Western Reserve University, Cleveland, Ohio, USA
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Xie Z, Li Y, Xiao P, Ke S. GATA3 promotes the autophagy and activation of hepatic stellate cell in hepatic fibrosis via regulating miR-370/HMGB1 pathway. GASTROENTEROLOGIA Y HEPATOLOGIA 2024; 47:219-229. [PMID: 37207965 DOI: 10.1016/j.gastrohep.2023.05.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Revised: 04/16/2023] [Accepted: 05/10/2023] [Indexed: 05/21/2023]
Abstract
BACKGROUND Hepatic fibrosis (HF) is a common result of the repair process of various chronic liver diseases. Hepatic stellate cells (HSCs) activation is the central link in the occurrence of HF. METHODS ELISA and histological analysis were performed to detect the pathological changes of liver tissues. In vitro, HSCs were treated with TGF-β1 as HF cell model. Combination of GATA-binding protein 3 (GATA3) and miR-370 gene promoter was ensured by ChIP and luciferase reporter assay. Autophagy was monitored by observing the GFP-LC3 puncta formation. The interaction between miR-370 and high mobility group box 1 protein (HMGB1) was verified by luciferase reporter assay. RESULTS CCl4-induced HF mice exhibited an increase of ALT and AST, and severe damage and fibrosis of liver tissues. GATA3 and HMGB1 were up-regulated, and miR-370 was down-regulated in CCl4-induced HF mice and activated HSCs. GATA3 enhanced expression of the autophagy-related proteins and activation markers in the activated HSCs. Inhibition of autophagy partly reversed GATA3-induced activation of HSCs and the promotion of GATA3 to hepatic fibrosis. Moreover, GATA3 suppressed miR-370 expression via binding with its promotor, and enhanced HMGB1 expression in HSCs. Increasing of miR-370 inhibited HMGB1 expression by directly targeting its mRNA 3'-UTR. The promotion of GATA3 to TGF-β1-induced HSCs autophagy and activation was abrogated by miR-370 up-regulation or HMGB1 knockdown. CONCLUSIONS This work demonstrates that GATA3 promotes autophagy and activation of HSCs by regulating miR-370/HMGB1 signaling pathway, which contributes to accelerate HF. Thus, this work suggests that GATA3 may be a potential target for prevention and treatment of HF.
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Affiliation(s)
- Zhengyuan Xie
- Department of Gastroenterology, The Second Affiliated Hospital of Nanchang University, Nanchang 330006, China.
| | - Yangyang Li
- Medical College of Nanchang University, Nanchang 330006, China
| | - Peiguang Xiao
- Medical College of Nanchang University, Nanchang 330006, China
| | - Shanmiao Ke
- Medical College of Nanchang University, Nanchang 330006, China
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Abstract
PURPOSE OF REVIEW There has been a rapid increase in silicosis cases, particularly related to artificial stone. The key to management is avoidance of silica exposure. Despite this, many develop progressive disease and there are no routinely recommended treatments. This review provides a summary of the literature pertaining to pharmacological therapies for silicosis and examines the plausibility of success of such treatments given the disease pathogenesis. RECENT FINDINGS In-vitro and in-vivo models demonstrate potential efficacy for drugs, which target inflammasomes, cytokines, effector cells, fibrosis, autophagy, and oxidation. SUMMARY There is some evidence for potential therapeutic targets in silicosis but limited translation into human studies. Treatment of silicosis likely requires a multimodal approach, and there is considerable cross-talk between pathways; agents that modulate both inflammation, fibrosis, autophagy, and ROS production are likely to be most efficacious.
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Affiliation(s)
- Hayley Barnes
- Monash Centre for Occupational and Environmental Health, Monash University
- Department of Respiratory Medicine, Alfred Health
- Central Clinical School, Monash University, Melbourne
| | - Maggie Lam
- Centre for Innate Immunity and Infectious Diseases, Hudson Institute of Medical Research, Clayton
- Department of Molecular and Translational Sciences, Monash University, Clayton, Victoria, Australia
| | - Michelle D Tate
- Centre for Innate Immunity and Infectious Diseases, Hudson Institute of Medical Research, Clayton
- Department of Molecular and Translational Sciences, Monash University, Clayton, Victoria, Australia
| | - Ryan Hoy
- Monash Centre for Occupational and Environmental Health, Monash University
- Department of Respiratory Medicine, Alfred Health
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Huang Y, Luo W, Yang Z, Lan T, Wei X, Wu H. Machine learning and experimental validation identified autophagy signature in hepatic fibrosis. Front Immunol 2024; 15:1337105. [PMID: 38481992 PMCID: PMC10933073 DOI: 10.3389/fimmu.2024.1337105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2023] [Accepted: 02/14/2024] [Indexed: 04/10/2024] Open
Abstract
Background The molecular mechanisms of hepatic fibrosis (HF), closely related to autophagy, remain unclear. This study aimed to investigate autophagy characteristics in HF. Methods Gene expression profiles (GSE6764, GSE49541 and GSE84044) were downloaded, normalized, and merged. Autophagy-related differentially expressed genes (ARDEGs) were determined using the limma R package and the Wilcoxon rank sum test and then analyzed by GO, KEGG, GSEA and GSVA. The infiltration of immune cells, molecular subtypes and immune types of healthy control (HC) and HF were analyzed. Machine learning was carried out with two methods, by which, core genes were obtained. Models of liver fibrosis in vivo and in vitro were constructed to verify the expression of core genes and corresponding immune cells. Results A total of 69 ARDEGs were identified. Series functional cluster analysis showed that ARDEGs were significantly enriched in autophagy and immunity. Activated CD4 T cells, CD56bright natural killer cells, CD56dim natural killer cells, eosinophils, macrophages, mast cells, neutrophils, and type 17 T helper (Th17) cells showed significant differences in infiltration between HC and HF groups. Among ARDEGs, three core genes were identified, that were ATG5, RB1CC1, and PARK2. Considerable changes in the infiltration of immune cells were observed at different expression levels of the three core genes, among which the expression of RB1CC1 was significantly associated with the infiltration of macrophage, Th17 cell, natural killer cell and CD56dim natural killer cell. In the mouse liver fibrosis experiment, ATG5, RB1CC1, and PARK2 were at higher levels in HF group than those in HC group. Compared with HC group, HF group showed low positive area in F4/80, IL-17 and CD56, indicating decreased expression of macrophage, Th17 cell, natural killer cell and CD56dim natural killer cell. Meanwhile, knocking down RB1CC1 was found to inhibit the activation of hepatic stellate cells and alleviate liver fibrosis. Conclusion ATG5, RB1CC1, and PARK2 are promising autophagy-related therapeutic biomarkers for HF. This is the first study to identify RB1CC1 in HF, which may promote the progression of liver fibrosis by regulating macrophage, Th17 cell, natural killer cell and CD56dim natural killer cell.
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Affiliation(s)
- Yushen Huang
- Department of Pharmacy, Liuzhou Workers Hospital, Liuzhou, Guangxi, China
| | - Wen Luo
- Department of Gastrointestinal Surgery, Liuzhou Workers Hospital, Liuzhou, Guangxi, China
| | - Zhijie Yang
- Department of Pharmacy, Liuzhou Workers Hospital, Liuzhou, Guangxi, China
| | - Tian Lan
- Department of Pharmacy, Liuzhou Workers Hospital, Liuzhou, Guangxi, China
| | - Xiaomou Wei
- Department of Scientific Research, Liuzhou Workers Hospital, Liuzhou, Guangxi, China
| | - Hongwen Wu
- Department of Pharmacy, Liuzhou Workers Hospital, Liuzhou, Guangxi, China
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Ge S, Guo Z, Xiao T, Sun P, Yang B, Ying Y. Qingfei Tongluo Mixture Attenuates Bleomycin-Induced Pulmonary Inflammation and Fibrosis through mTOR-Dependent Autophagy in Rats. Mediators Inflamm 2024; 2024:5573353. [PMID: 38361765 PMCID: PMC10869187 DOI: 10.1155/2024/5573353] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Revised: 01/24/2024] [Accepted: 01/27/2024] [Indexed: 02/17/2024] Open
Abstract
As an interstitial fibrosis disease characterized by diffuse alveolitis and structural alveolar disorders, idiopathic pulmonary fibrosis (IPF) has high lethality but lacks limited therapeutic drugs. A hospital preparation used for the treatment of viral pneumonia, Qingfei Tongluo mixture (QFTL), is rumored to have protective effects against inflammatory and respiratory disease. This study aims to confirm whether it has a therapeutic effect on bleomycin-induced IPF in rats and to elucidate its mechanism of action. Male SD rats were randomly divided into the following groups: control, model, CQ + QFTL (84 mg/kg chloroquine (CQ) + 3.64 g/kg QFTL), QFTL-L, M, H (3.64, 7.28, and 14.56 g/kg, respectively) and pirfenidone (PFD 420 mg/kg). After induction modeling and drug intervention, blood samples and lung tissue were collected for further detection. Body weight and lung coefficient were examined, combined with hematoxylin and eosin (H&E) and Masson staining to observe lung tissue lesions. The enzyme-linked immunosorbent assay (ELISA) and the hydroxyproline (HYP) assay kit were used to detect changes in proinflammatory factors (transforming growth factor-β (TGF-β), tumor necrosis factor-α (TNF-α), and interleukin-1β (IL-1β)) and HYP. Immunohistochemistry and Western blotting were performed to observe changes in proteins related to pulmonary fibrosis (α-smooth muscle actin (α-SMA) and matrix metalloproteinase 12 (MMP12)) and autophagy (P62 and mechanistic target of rapamycin (mTOR)). Treatment with QFTL significantly improved the adverse effects of bleomycin on body weight, lung coefficient, and pathological changes. Then, QFTL reduced bleomycin-induced increases in proinflammatory mediators and HYP. The expression changes of pulmonary fibrosis and autophagy marker proteins are attenuated by QFTL. Furthermore, the autophagy inhibitor CQ significantly reversed the downward trend in HYP levels and α-SMA protein expression, which QFTL improved in BLM-induced pulmonary fibrosis rats. In conclusion, QFTL could effectively attenuate bleomycin-induced inflammation and pulmonary fibrosis through mTOR-dependent autophagy in rats. Therefore, QFTL has the potential to be an alternative treatment for IPF in clinical practice.
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Affiliation(s)
- Shuyu Ge
- Department of Pharmacy, Zhejiang Academy of Traditional Chinese Medicine, Tongde Hospital of Zhejiang Province, Hangzhou, China
| | - Zhenghong Guo
- College of Pharmacy, Guizhou University of Traditional Chinese Medicine, Guiyang 550025, China
| | - Ting Xiao
- The State Key Laboratory of Functions and Applications of Medicinal Plants, School of Pharmaceutical Sciences, Guizhou Medical University, Guiyang 550031, China
| | - Pingping Sun
- Department of Pharmacy, Zhejiang Academy of Traditional Chinese Medicine, Tongde Hospital of Zhejiang Province, Hangzhou, China
| | - Bo Yang
- Department of Pharmacy, Zhejiang Academy of Traditional Chinese Medicine, Tongde Hospital of Zhejiang Province, Hangzhou, China
| | - Yin Ying
- Department of Pharmacy, Zhejiang Academy of Traditional Chinese Medicine, Tongde Hospital of Zhejiang Province, Hangzhou, China
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Ren Q, Sun Q, Fu J. Dysfunction of autophagy in high-fat diet-induced non-alcoholic fatty liver disease. Autophagy 2024; 20:221-241. [PMID: 37700498 PMCID: PMC10813589 DOI: 10.1080/15548627.2023.2254191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2023] [Accepted: 08/24/2023] [Indexed: 09/14/2023] Open
Abstract
ABBREVIATIONS ACOX1: acyl-CoA oxidase 1; ADH5: alcohol dehydrogenase 5 (class III), chi polypeptide; ADIPOQ: adiponectin, C1Q and collagen domain containing; ATG: autophagy related; BECN1: beclin 1; CRTC2: CREB regulated transcription coactivator 2; ER: endoplasmic reticulum; F2RL1: F2R like trypsin receptor 1; FA: fatty acid; FOXO1: forkhead box O1; GLP1R: glucagon like peptide 1 receptor; GRK2: G protein-coupled receptor kinase 2; GTPase: guanosine triphosphatase; HFD: high-fat diet; HSCs: hepatic stellate cells; HTRA2: HtrA serine peptidase 2; IRGM: immunity related GTPase M; KD: knockdown; KDM6B: lysine demethylase 6B; KO: knockout; LAMP2: lysosomal associated membrane protein 2; LAP: LC3-associated phagocytosis; LDs: lipid droplets; Li KO: liver-specific knockout; LSECs: liver sinusoidal endothelial cells; MAP1LC3/LC3: microtubule associated protein 1 light chain 3; MAP3K5: mitogen-activated protein kinase kinase kinase 5; MED1: mediator complex subunit 1; MTOR: mechanistic target of rapamycin kinase; MTORC1: mechanistic target of rapamycin complex 1; NAFLD: non-alcoholic fatty liver disease; NASH: non-alcoholic steatohepatitis; NFE2L2: NFE2 like bZIP transcription factor 2; NOS3: nitric oxide synthase 3; NR1H3: nuclear receptor subfamily 1 group H member 3; OA: oleic acid; OE: overexpression; OSBPL8: oxysterol binding protein like 8; PA: palmitic acid; RUBCNL: rubicon like autophagy enhancer; PLIN2: perilipin 2; PLIN3: perilipin 3; PPARA: peroxisome proliferator activated receptor alpha; PRKAA2/AMPK: protein kinase AMP-activated catalytic subunit alpha 2; RAB: member RAS oncogene family; RPTOR: regulatory associated protein of MTOR complex 1; SCD: stearoyl-CoA desaturase; SIRT1: sirtuin 1; SIRT3: sirtuin 3; SNARE: soluble N-ethylmaleimide-sensitive factor attachment protein receptor; SQSTM1/p62: sequestosome 1; SREBF1: sterol regulatory element binding transcription factor 1;SREBF2: sterol regulatory element binding transcription factor 2; STING1: stimulator of interferon response cGAMP interactor 1; STX17: syntaxin 17; TAGs: triacylglycerols; TFEB: transcription factor EB; TP53/p53: tumor protein p53; ULK1: unc-51 like autophagy activating kinase 1; VMP1: vacuole membrane protein 1.
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Affiliation(s)
- Qiannan Ren
- Department of Endocrinology, Children’s Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, China
| | - Qiming Sun
- International Institutes of Medicine, The Fourth Affiliated Hospital of Zhejiang University School of Medicine, Yiwu, Zhejiang, China
- Department of Biochemistry, and Department of Cardiology of Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Junfen Fu
- Department of Endocrinology, Children’s Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, China
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Nazeer B, Khawar MB, Khalid MU, Hamid SE, Rafiq M, Abbasi MH, Sheikh N, Ali A, Fatima H, Ahmad S. Emerging role of lipophagy in liver disorders. Mol Cell Biochem 2024; 479:1-11. [PMID: 36943663 DOI: 10.1007/s11010-023-04707-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2022] [Accepted: 03/10/2023] [Indexed: 03/23/2023]
Abstract
Lipophagy is a selective degradation of lipids by a lysosomal-mediated pathway, and dysregulation of lipophagy is linked with the pathological hallmark of many liver diseases. Downregulation of lipophagy in liver cells results in abnormal accumulation of LDs (Lipid droplets) in hepatocytes which is a characteristic feature of several liver pathologies such as nonalcoholic fatty liver disease (NAFLD) and nonalcoholic steatohepatitis (NASH). Contrarily, upregulation of lipophagy in activated hepatic stellate cells (HSCs) is associated with hepatic fibrosis and cirrhosis. Lipid metabolism reprogramming in violent cancer cells contributes to the progression of liver cancer. In this review, we have summarized the recent studies focusing on various components of the lipophagic machinery that can be modulated for their potential role as therapeutic agents against a wide range of liver diseases.
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Affiliation(s)
- Bismillah Nazeer
- Molecular Medicine and Cancer Therapeutics Lab, Department of Zoology, Faculty of Sciences, University of Central Punjab, Lahore, Pakistan
| | - Muhammad Babar Khawar
- Applied Molecular Biology and Biomedicine Lab, Department of Zoology, University of Narowal, Narowal, Pakistan.
| | - Muhammad Usman Khalid
- Molecular Medicine and Cancer Therapeutics Lab, Department of Zoology, Faculty of Sciences, University of Central Punjab, Lahore, Pakistan
| | - Syeda Eisha Hamid
- Molecular Medicine and Cancer Therapeutics Lab, Department of Zoology, Faculty of Sciences, University of Central Punjab, Lahore, Pakistan
| | - Mussarat Rafiq
- Cell and Molecular Biology Lab, Institute of Zoology, University of the Punjab, Lahore, Pakistan
| | | | - Nadeem Sheikh
- Cell and Molecular Biology Lab, Institute of Zoology, University of the Punjab, Lahore, Pakistan.
| | - Ahmad Ali
- Molecular Medicine and Cancer Therapeutics Lab, Department of Zoology, Faculty of Sciences, University of Central Punjab, Lahore, Pakistan
| | - Hooriya Fatima
- Molecular Medicine and Cancer Therapeutics Lab, Department of Zoology, Faculty of Sciences, University of Central Punjab, Lahore, Pakistan
| | - Sadia Ahmad
- Molecular Medicine and Cancer Therapeutics Lab, Department of Zoology, Faculty of Sciences, University of Central Punjab, Lahore, Pakistan
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Jiang Y, Hou L, Dou J, Xuan M, Cui Z, Lian L, Nan J, Wu Y. Sesamol as a potential candidate for the treatment of hepatic fibrosis, based on its regulation of FXR/LXR axis-mediated inhibition of autophagy through crosstalk between hepatic cells and macrophage. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2024; 123:155145. [PMID: 37976698 DOI: 10.1016/j.phymed.2023.155145] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2023] [Revised: 10/01/2023] [Accepted: 10/12/2023] [Indexed: 11/19/2023]
Abstract
BACKGROUND Sesamol (SEM), a natural lignan compound isolated from sesame, has strong anti-oxidant property, regulating lipid metabolism, decreasing cholesterol and hepatoprotection. However, its anti-hepatic fibrosis effect and mechanisms have not been comprehensively elucidated. HYPOTHESIS/PURPOSE This study aims to investigate the anti-hepatic fibrosis of SEM and its underlying mechanisms. METHOD C57BL/6 mice with hepatic fibrosis were induced by TAA, then administrated with SEM or curcumin, respectively. HSCs were stimulated by TGF-β or conditioned medium, and then cultured with SEM, GW4064, GW3965, Rapamycin (RA) or 3-methyladenine (3-MA), respectively. Mice with hepatic fibrosis also were administrated with SEM, RA or 3-MA to estimate the effect of SEM on autophagy. RESULTS In vitro, SEM significantly inhibited extracellular matrix deposition, P2 × 7r-NLRP3, and inflammatory cytokines. SEM increased FXR and LXRα/β expressions and decreased MAPLC3α/β and P62 expressions, functioning as 3-MA (autophagy inhibitor). In vivo, SEM reduced serum transaminase, histopathology changes, fibrogenesis, autophagy markers and inflammatory cytokines caused by TAA. LX-2 were activated with conditioned medium from LPS-primed THP-1, which resulted in significant enhance of autophagy markers and inflammatory cytokines and decrease of FXR and LXRα/β expressions. SEM could reverse above these changes and function as 3-MA, GW4064, or GW3965. Deficiency of FXR or LXR attenuated the regulation of SEM on α-SMA, MAPLC3α/β, P62 and IL-1β in activated LX-2. In activated THP-1, deficiency of FXR could decrease the expression of LXR, and vice versa. Deficiency of FXR or LXR in activated MΦ decreased the expressions of FXR and LXR in activated LX-2. Deficiency FXR or LXR in activated MΦ also attenuated the regulation of SEM on α-SMA, MAPLC3α/β, P62, caspase-1 and IL-1β. In vivo, SEM significantly reversed hepatic fibrosis via FXR/LXR and autophagy. CONCLUSION SEM could regulate hepatic fibrosis by inhibiting fibrogenesis, autophagy and inflammation. FXR/LXR axis-mediated inhibition of autophagy contributed to the regulation of SEM against hepatic fibrosis, especially based on involving in the crosstalk of HSCs-macrophage. SEM might be a prospective therapeutic candidate, and its mechanism would be a new direction or strategy for hepatic fibrosis treatment.
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Affiliation(s)
- YuChen Jiang
- Key Laboratory of Natural Medicines of the Changbai Mountain (Yanbian University), Ministry of Education, Key Laboratory for Traditional Chinese Korean Medicine Research (Yanbian University), State Ethnic Affairs, College of Pharmacy, Yanbian University, Yanji, Jilin Province 133002, China
| | - LiShuang Hou
- Air Force Medical University, Xi'an 710032, China
| | - JiaYi Dou
- Key Laboratory of Natural Medicines of the Changbai Mountain (Yanbian University), Ministry of Education, Key Laboratory for Traditional Chinese Korean Medicine Research (Yanbian University), State Ethnic Affairs, College of Pharmacy, Yanbian University, Yanji, Jilin Province 133002, China
| | - MeiYan Xuan
- School of Pharmaceutical Sciences, Josai University, Sakado, Saitama, Japan
| | - ZhenYu Cui
- Key Laboratory of Natural Medicines of the Changbai Mountain (Yanbian University), Ministry of Education, Key Laboratory for Traditional Chinese Korean Medicine Research (Yanbian University), State Ethnic Affairs, College of Pharmacy, Yanbian University, Yanji, Jilin Province 133002, China
| | - LiHua Lian
- Key Laboratory of Natural Medicines of the Changbai Mountain (Yanbian University), Ministry of Education, Key Laboratory for Traditional Chinese Korean Medicine Research (Yanbian University), State Ethnic Affairs, College of Pharmacy, Yanbian University, Yanji, Jilin Province 133002, China
| | - JiXing Nan
- Key Laboratory of Natural Medicines of the Changbai Mountain (Yanbian University), Ministry of Education, Key Laboratory for Traditional Chinese Korean Medicine Research (Yanbian University), State Ethnic Affairs, College of Pharmacy, Yanbian University, Yanji, Jilin Province 133002, China.
| | - YanLing Wu
- Key Laboratory of Natural Medicines of the Changbai Mountain (Yanbian University), Ministry of Education, Key Laboratory for Traditional Chinese Korean Medicine Research (Yanbian University), State Ethnic Affairs, College of Pharmacy, Yanbian University, Yanji, Jilin Province 133002, China.
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Du Y, Zhu S, Zeng H, Wang Z, Huang Y, Zhou Y, Zhang W, Zhu J, Yang C. Research Progress on the Effect of Autophagy and Exosomes on Liver Fibrosis. Curr Stem Cell Res Ther 2024; 19:785-797. [PMID: 37102476 DOI: 10.2174/1574888x18666230427112930] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2022] [Revised: 02/20/2023] [Accepted: 03/06/2023] [Indexed: 04/28/2023]
Abstract
Chronic liver disease is a known risk factor for the development of liver cancer, and the development of microRNA (miRNA) liver therapies has been hampered by the difficulty of delivering miRNA to damaged tissues. In recent years, numerous studies have shown that hepatic stellate cell (HSC) autophagy and exosomes play an important role in maintaining liver homeostasis and ameliorating liver fibrosis. In addition, the interaction between HSC autophagy and exosomes also affects the progression of liver fibrosis. In this paper, we review the research progress of mesenchymal stem cell-derived exosomes (MSC-EVs) loaded with specific miRNA and autophagy, and their related signaling pathways in liver fibrosis, which will provide a more reliable basis for the use of MSC-EVs for therapeutic delivery of miRNAs targeting the chronic liver disease.
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Grants
- 2021A1515011580, 2021B1515140012, 2023A1515010083, 2022A1515011696 Natural Science Foundation of Guangdong Province
- 20211800905342, 20221800905572 Dongguan Science and Technology of Social Development Program
- 20211216 Administration of Traditional Chinese Medicine of Guangdong Province
- A2020096, B2021330 Medical Scientific Research Foundation of Guangdong Province
- k202005 Research and Development Fund of Dongguan People's Hospital
- pdjh2021b0224 Special Funds for the Cultivation of Guangdong College Students' Scientific and Technological Innovation (Climbing Program Special Funds)
- 2020ZZDS002, 2020ZYDS005, 2021ZZDS006, 2021ZCDS003, ZYDS003 Guangdong Medical University Students' Innovation Experiment Program
- GDMU2020010, GDMU2020078, GDMU2021003, GDMU2021049 Guangdong Medical University Students' Innovation and Entrepreneurship Training Program
- 202110571010, S202110571078, 202210571008, S202210571075 Provincial and National College Students' Innovation and Entrepreneurship Training Program
- 4SG23033G Guangdong Medical University-Southern Medical University Twinning Research Team Project
- GDMUZ2020009 Scientific Research Fund of Guangdong Medical University
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Affiliation(s)
- Yikuan Du
- Central Laboratory, Affiliated Dongguan Hospital, Southern Medical University, Dongguan, 523059, China
| | - Silin Zhu
- Dongguan Key Laboratory of Stem Cell and Regenerative Tissue Engineering, Guangdong Medical University, Dongguan, 523808, China
| | - Haojie Zeng
- Dongguan Key Laboratory of Stem Cell and Regenerative Tissue Engineering, Guangdong Medical University, Dongguan, 523808, China
| | - Zhenjie Wang
- Dongguan Key Laboratory of Stem Cell and Regenerative Tissue Engineering, Guangdong Medical University, Dongguan, 523808, China
| | - Yixing Huang
- Dongguan Key Laboratory of Stem Cell and Regenerative Tissue Engineering, Guangdong Medical University, Dongguan, 523808, China
| | - Yuqi Zhou
- Dongguan Key Laboratory of Stem Cell and Regenerative Tissue Engineering, Guangdong Medical University, Dongguan, 523808, China
| | - Weichui Zhang
- Dongguan Key Laboratory of Stem Cell and Regenerative Tissue Engineering, Guangdong Medical University, Dongguan, 523808, China
| | - Jinfeng Zhu
- Dongguan Key Laboratory of Stem Cell and Regenerative Tissue Engineering, Guangdong Medical University, Dongguan, 523808, China
| | - Chun Yang
- Dongguan Key Laboratory of Stem Cell and Regenerative Tissue Engineering, Guangdong Medical University, Dongguan, 523808, China
- The First Dongguan Affiliated Hospital, Guangdong Medical University, Dongguan, 523716, China
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Yang F, Zhang Y, Dong L, Song Z. Cordyceps cicadae ameliorates inflammatory responses, oxidative stress, and fibrosis by targeting the PI3K/mTOR-mediated autophagy pathway in the renal of MRL/lpr mice. Immun Inflamm Dis 2024; 12:e1168. [PMID: 38270299 PMCID: PMC10808846 DOI: 10.1002/iid3.1168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 01/10/2024] [Accepted: 01/14/2024] [Indexed: 01/26/2024] Open
Abstract
BACKGROUND The vast majority of systemic lupus erythematosus patients develop lupus nephritis (LN) with severe renal manifestations, such as inflammatory responses, oxidative stress, and fibrosis. The purpose of this research was to investigate Cordyceps cicadae as a potential therapeutic target for treating inflammatory responses, oxidative stress, and fibrosis in LN. METHODS The effects of C. cicadae on lupus symptoms in mice with LN were determined. MRL/lpr mice were treated with C. cicadae (4 g/kg/day, i.e., CC group, n = 8) or an equal volume of saline (model group, n = 8), and MRL/MP mice were treated with an equal volume of saline (control group, n = 8). Renal function indices, renal pathology, inflammatory markers, oxidative stress markers, and renal interstitial fibrosis levels were evaluated after C. cicadae treatment. Western blot analysis was performed to investigate the effect of C. cicadae on the expression of fibrosis biomarkers and the phosphatidylinositol 3-kinase (PI3K)/mammalian target of rapamycin (mTOR)-mediated autophagy pathway in the renal tissues of mice. RESULTS C. cicadae ameliorated renal lesions, the inflammatory response, and oxidative stress damage in MRL/lpr mice. C. cicadae treatment inhibited renal fibrosis (16.31 ± 4.16 vs. 31.25 ± 5.61) and downregulated the expression of the fibrosis biomarkers alpha-smooth muscle actin, fibronectin, and collagen I (COL I) in the kidneys of MRL/lpr mice. In addition, further research showed that the PI3K/mTOR-mediated autophagy pathway was involved in C. cicadae-mediated effects on renal fibrosis in MRL/lpr mice. Furthermore, the therapeutic effect of C. cicadae on repairing renal fibrosis and damage in MRL/lpr mice was abolished by the PI3K agonist 740 Y-P. CONCLUSIONS The findings of the present research showed that C. cicadae could alleviate inflammatory responses, oxidative stress, and fibrosis in the renal tissues of mice with LN by targeting the PI3K/mTOR-mediated autophagy pathway.
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Affiliation(s)
- Feng Yang
- Department of RheumatologyYantai Hospital of Traditional Chinese MedicineYantai CityShandongChina
| | - Yanyan Zhang
- Department of RheumatologyYantai Hospital of Traditional Chinese MedicineYantai CityShandongChina
| | - Lei Dong
- Department of RheumatologyYantai Hospital of Traditional Chinese MedicineYantai CityShandongChina
| | - Zhichao Song
- Department of RheumatologyYantai Hospital of Traditional Chinese MedicineYantai CityShandongChina
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Wang S, Ding Q, Xiu A, Xia Y, Wang G, Zhang C. Upregulation of ATG9b by propranolol promotes autophagic cell death of hepatic stellate cells to improve liver fibrosis. J Cell Mol Med 2024; 28:e18047. [PMID: 37970991 PMCID: PMC10826435 DOI: 10.1111/jcmm.18047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Revised: 10/25/2023] [Accepted: 11/06/2023] [Indexed: 11/19/2023] Open
Abstract
Proranolol has long been recommended to prevent variceal bleeding in patients with cirrhosis. However, the mechanisms of propranolol in liver fibrosis have not yet been thoroughly elucidated. Autophagic cell death (ACD) of activated hepatic stellate cells (HSCs) is important in the alleviation of liver fibrosis. Our study aims to assess the mechanisms of propranolol regulating HSC ACD and liver fibrosis. ACD of HSCs was investigated using lentivirus transfection. The molecular mechanism was determined using a PCR profiler array. The role of autophagy-related protein 9b (ATG9b) in HSC ACD was detected using co-immunoprecipitation and co-localization of immunofluorescence. Changes in the signalling pathway were detected by the Phospho Explorer antibody microarray. Propranolol induces ACD and apoptosis in HSCs. ATG9b upregulation was detected in propranolol-treated HSCs. ATG9b upregulation promoted ACD of HSCs and alleviated liver fibrosis in vivo. ATG9b enhanced the P62 recruitment to ATG5-ATG12-LC3 compartments and increased the co-localization of P62 with ubiquitinated proteins. The PI3K/AKT/mTOR pathway is responsible for ATG9b-induced ACD in activated HSCs, whereas the p38/JNK pathway is involved in apoptosis. This study provides evidence for ATG9b as a new target gene and propranolol as an agent to alleviate liver fibrosis by regulating ACD of activated HSCs.
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Affiliation(s)
- Sining Wang
- Department of GastroenterologyShandong Provincial Hospital, Cheeloo College of Medicine, Shandong UniversityJinanChina
| | - Qian Ding
- Department of GastroenterologyShandong Provincial Hospital Affiliated to Shandong First Medical UniversityJinanChina
| | - Aiyuan Xiu
- Department of GastroenterologyShandong Provincial Hospital, Cheeloo College of Medicine, Shandong UniversityJinanChina
| | - Yifu Xia
- Department of GastroenterologyShandong Provincial Hospital, Cheeloo College of Medicine, Shandong UniversityJinanChina
| | - Guangchuan Wang
- Department of GastroenterologyShandong Provincial Hospital Affiliated to Shandong First Medical UniversityJinanChina
| | - Chunqing Zhang
- Department of GastroenterologyShandong Provincial Hospital, Cheeloo College of Medicine, Shandong UniversityJinanChina
- Department of GastroenterologyShandong Provincial Hospital Affiliated to Shandong First Medical UniversityJinanChina
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Song Y, Yang H, Kim J, Lee Y, Kim SH, Do IG, Park CY. Gemigliptin, a DPP4 inhibitor, ameliorates nonalcoholic steatohepatitis through AMP-activated protein kinase-independent and ULK1-mediated autophagy. Mol Metab 2023; 78:101806. [PMID: 37739179 PMCID: PMC10542016 DOI: 10.1016/j.molmet.2023.101806] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/25/2023] [Revised: 08/16/2023] [Accepted: 09/11/2023] [Indexed: 09/24/2023] Open
Abstract
OBJECTIVE Abnormal autophagic function and activated inflammasomes are typical features in the liver of patients with non-alcoholic steatohepatitis (NASH). Here, we explored whether gemigliptin, a dipeptidyl peptidase 4 (DPP4) inhibitor for treatment of type 2 diabetes, can induce autophagy and regulate inflammasome activation as a potential NASH treatment independent of its anti-diabetic effect. METHODS Expression analysis was performed using human liver samples obtained from 18 subjects who underwent hepatectomy. We explored the function and mechanism of gemigliptin using a methionine- and choline-deficient diet (MCD)-induced NASH mouse model and HepG2 cells cultured in MCD-mimicking medium. RESULTS Autophagy was suppressed by marked decreases in the expression of ULK1 and LC3II/LC3I ratio in human NAFLD/NASH patients, a NASH mouse model, and HepG2 cells cultured with MCD-mimicking media. Surprisingly, we found that the expression of p-AMPK decreased in liver tissues from patients with steatosis but was restored in NASH patients. The expression of p-AMPK in the NASH mouse model was similar to that of the control group. Hence, these results indicate that autophagy was reduced in NASH via an AMPK-independent pathway. However, gemigliptin treatment attenuated lipid accumulation, inflammation, and fibrosis in the liver of MCD diet-fed mice with restoration of ULK1 expression and autophagy induction. In vitro, gemigliptin alleviated inflammasome activation through induction of ULK1-dependent autophagy. Furthermore, gemigliptin treatment upregulated ULK1 expression and activated AMPK even after siRNA-mediated knockdown of AMPKα1/2 and ULK1, respectively. CONCLUSIONS Collectively, these results suggest that gemigliptin ameliorated NASH via AMPK-independent, ULK1-mediated effects on autophagy.
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Affiliation(s)
- Youngmi Song
- Medical Research Institute, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Hyekyung Yang
- Medical Research Institute, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Juhee Kim
- Medical Research Institute, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Yoonjin Lee
- Medical Research Institute, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Sung-Ho Kim
- LG Chem Life Sciences, Gangseo-gu, Seoul, South Korea
| | - In-Gu Do
- Department of Pathology, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Cheol-Young Park
- Medical Research Institute, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, South Korea; Division of Endocrinology and Metabolism, Department of Internal Medicine, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, South Korea.
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Aghajanzadeh T, Talkhabi M, Zali MR, Hatami B, Baghaei K. Diagnostic potential and pathogenic performance of circulating miR-146b, miR-194, and miR-214 in liver fibrosis. Noncoding RNA Res 2023; 8:471-480. [PMID: 37434946 PMCID: PMC10331815 DOI: 10.1016/j.ncrna.2023.06.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Revised: 06/17/2023] [Accepted: 06/25/2023] [Indexed: 07/13/2023] Open
Abstract
Liver fibrosis is the excessive accumulation of extracellular matrix proteins. Due to the lack of an accurate test for an early diagnosis of liver fibrosis and the invasiveness of the liver biopsy procedure, there is an urgent need for effective non-invasive biomarkers for screening the patients. we aimed to evaluate the diagnostic performance of circulating miRNAs (miR-146b, -194, -214) and their related mechanisms in the pathogenesis of liver fibrosis. The expression levels of miR-146b, -194, and -214 were quantified in whole blood samples from NAFLD patients using real-time PCR. The competing endogenous RNA (ceRNA) network was constructed and a gene set enrichment analysis (GSEA) was performed for HSC activation-related genes. Also, the transcription factor (TF)-miR co-regulatory network and the survival plot for three miRNAs and core genes were illustrated. The qPCR results showed that the relative expression of miR-146b and miR-214 significantly increased in NAFLD patients, while miR-194 showed significant down-regulation. The ceRNA network analysis implicated NEAT1 and XIST as sponge candidates for these miRNAs. The GSEA results identified 15 core genes involved in HSC activation, primarily enriched in NF-κB activation and autophagy pathways. STAT3, TCF3, RELA, and RUNX1 were considered potential transcription factors connected to miRNAs in the TF-miR network. Our study elucidated three candidate circulating miRNAs differentially expressed in NAFLD that could serve as a promising non-invasive diagnostic tool for early detection strategies. Also, NF-κB activation, autophagy, and negative regulation of the apoptotic process are the main potential underlying mechanisms regulated by these miRNAs in liver fibrosis pathogenesis.
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Affiliation(s)
- Taha Aghajanzadeh
- Department of Animal Sciences and Marine Biology, Faculty of Life Sciences and Biotechnology, Shahid Beheshti University, Tehran, Iran
- Basic and Molecular Epidemiology of Gastrointestinal Disorders Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mahmood Talkhabi
- Department of Animal Sciences and Marine Biology, Faculty of Life Sciences and Biotechnology, Shahid Beheshti University, Tehran, Iran
| | - Mohammad Reza Zali
- Gastroenterology and Liver Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Behzad Hatami
- Gastroenterology and Liver Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Kaveh Baghaei
- Basic and Molecular Epidemiology of Gastrointestinal Disorders Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
- Gastroenterology and Liver Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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Li Q, Lin Y, Liang G, Xiao N, Zhang H, Yang X, Yang J, Liu A. Autophagy and Senescence: The Molecular Mechanisms and Implications in Liver Diseases. Int J Mol Sci 2023; 24:16880. [PMID: 38069199 PMCID: PMC10706096 DOI: 10.3390/ijms242316880] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2023] [Revised: 11/21/2023] [Accepted: 11/24/2023] [Indexed: 12/18/2023] Open
Abstract
The liver is the primary organ accountable for complex physiological functions, including lipid metabolism, toxic chemical degradation, bile acid synthesis, and glucose metabolism. Liver function homeostasis is essential for the stability of bodily functions and is involved in the complex regulation of the balance between cell proliferation and cell death. Cell proliferation-halting mechanisms, including autophagy and senescence, are implicated in the development of several liver diseases, such as cholestasis, viral hepatitis, nonalcoholic fatty liver disease, liver fibrosis, and hepatocellular carcinoma. Among various cell death mechanisms, autophagy is a highly conserved and self-degradative cellular process that recycles damaged organelles, cellular debris, and proteins. This process also provides the substrate for further metabolism. A defect in the autophagy machinery can lead to premature diseases, accelerated aging, inflammatory state, tumorigenesis, and cellular senescence. Senescence, another cell death type, is an active player in eliminating premalignant cells. At the same time, senescent cells can affect the function of neighboring cells by secreting the senescence-associated secretory phenotype and induce paracrine senescence. Autophagy can promote and delay cellular senescence under different contexts. This review decodes the roles of autophagy and senescence in multiple liver diseases to achieve a better understanding of the regulatory mechanisms and implications of autophagy and senescence in various liver diseases.
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Affiliation(s)
| | | | | | | | | | | | | | - Anding Liu
- Experimental Medicine Center, Tongji Hospital, Tongji Medical College, Huazhong University of Sciences and Technology, Wuhan 430100, China; (Q.L.); (Y.L.); (G.L.); (N.X.); (H.Z.); (X.Y.); (J.Y.)
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Hao K, Wang J, Yu H, Chen L, Zeng W, Wang Z, Hu G. Peroxisome Proliferator-Activated Receptor γ Regulates Lipid Metabolism in Sheep Trophoblast Cells through mTOR Pathway-Mediated Autophagy. PPAR Res 2023; 2023:6422804. [PMID: 38020065 PMCID: PMC10651342 DOI: 10.1155/2023/6422804] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Revised: 10/03/2023] [Accepted: 10/14/2023] [Indexed: 12/01/2023] Open
Abstract
Peroxisome proliferator-activated receptor gamma (PPARγ) is a key nuclear receptor transcription factor that is highly expressed in trophoblastic cells during embryonic attachment and is accompanied by rapid cell proliferation and increased lipid accumulation. We previously showed that the autophagy pathway is activated in cells after activation of PPARγ, accompanied by increased lipid accumulation. In this study, we used PPARγ agonist rosiglitazone and inhibitor GW9662, as well as autophagy activator rapamycin and inhibitor 3-methyladenine, to unravel the probable mechanism of PPARγ engaged in lipid metabolism in sheep trophoblast cells (STCs). After 12 h, 24 h, and 48 h of drug treatment, the levels of autophagy-related proteins were detected by Western blot, the triglyceride content and MDA level of cells were detected by colorimetry, and the lipid droplets and lysosomes were localized by immunofluorescence. We found that PPARγ inhibited the activity of mammalian target of rapamycin (mTOR) pathway in STCs for a certain period of time, promoted the increase of autophagy and lysosome formation, and enhanced the accumulation of lipid droplets and triglycerides. Compared with cells whose PPARγ function is activated, blocking autophagy before activating PPARγ will hinder lipid accumulation in STCs. Pretreatment of cells with rapamycin promoted autophagy with results similar to rosiglitazone treatment, while inhibition of autophagy with 3-methyladenine reduced lysosome and lipid accumulation. Based on these observations, we conclude that PPARγ can induce autophagy by blocking the mTOR pathway, thereby promoting the accumulation of lipid droplets and lysosomal degradation, providing an energy basis for the rapid proliferation of trophoblast cells during embryo implantation. In brief, this study partially revealed the molecular regulatory mechanism of PPARγ, mTOR pathway, and autophagy on trophoblast cell lipid metabolism, which provides a theoretical basis for further exploring the functional regulatory network of trophoblast cells during the attachment of sheep embryos.
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Affiliation(s)
- Kexing Hao
- State Key Laboratory of Sheep Genetic Improvement and Healthy Production/Institute of Animal Husbandry and Veterinary, Xinjiang Academy of Agricultural and Reclamation Sciences, Shihezi, China
- College of Animal Science and Technology, Shihezi University, Shihezi 832000, China
| | - Jing Wang
- State Key Laboratory of Sheep Genetic Improvement and Healthy Production/Institute of Animal Husbandry and Veterinary, Xinjiang Academy of Agricultural and Reclamation Sciences, Shihezi, China
- College of Animal Science and Technology, Shihezi University, Shihezi 832000, China
| | - Hengbin Yu
- College of Animal Science and Technology, Shihezi University, Shihezi 832000, China
| | - Lei Chen
- College of Animal Science and Technology, Shihezi University, Shihezi 832000, China
| | - Weibin Zeng
- College of Animal Science and Technology, Shihezi University, Shihezi 832000, China
| | - Zhengrong Wang
- State Key Laboratory of Sheep Genetic Improvement and Healthy Production/Institute of Animal Husbandry and Veterinary, Xinjiang Academy of Agricultural and Reclamation Sciences, Shihezi, China
| | - Guangdong Hu
- College of Animal Science and Technology, Shihezi University, Shihezi 832000, China
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Zhang K, Wu Z, Zhao Y, Qiu X, Li F, Chen Q, Cui F. LC3 Accelerated Brain-Lung Axis Abscopal Effects after Fractionated Whole-Brain Radiation by Promoting Motoneurons to Secrete Periostin. Radiat Res 2023; 200:462-473. [PMID: 37796808 DOI: 10.1667/rade-23-00075.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2022] [Accepted: 08/14/2023] [Indexed: 10/07/2023]
Abstract
The effect of autophagy on the radiation-induced bystander effect (RIBE) in vivo is unclear. Here, the whole brains of microtubule-associated protein 1A/1B-light chain 3 (LC3) and C57BL/6 (B6) mice were irradiated once (10 Gy)(IR1), given 3 fractions in three weeks (IR3), or 6 fractions in six weeks (IR6). The median survival of LC3 mice was 56.5 days, and that of B6 mice was 65 days after IR6. LC3 mice showed more congestion and fibrosis in the lung after the IR3 and IR6 irradiation protocols than B6 mice. Quantitative proteomics of serum samples and lung RNA sequencing of the LC3 group showed that the common most clustered pathway of the IR3 group was the elastic fiber formation pathway, which contained Periostin (POSTN). POSTN in the motoneurons increased with increasing number of radiation fractions in LC3 mice. A 1 μg/g POSTN neutralizing antibody reduced the lung fibrosis of LC3 mice exposed to IR3 by one-third, and significantly prolonged the survival time of LC3 mice exposed to IR6. LDN-214117 and LRRK2-in-1 were the best two of sixteen transforming growth factor-beta1 (TGF-β) receptor and autophagy mediators to decrease Postn mRNA. These data led us to conclude that LC3 accelerated motoneuron secretion of POSTN and aggravated the RIBE in the lung after brain irradiation.
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Affiliation(s)
- Ke Zhang
- School of Radiation Medicine and Protection, Medical College of Soochow University, Suzhou 215123, P R China
- Qidong People's Hospital/Affiliated Qidong Hospital of Nantong University, Qidong 226200, P R China
| | - Zhuojun Wu
- School of Radiation Medicine and Protection, Medical College of Soochow University, Suzhou 215123, P R China
- Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education 215123, P R China
| | - Ying Zhao
- School of Radiation Medicine and Protection, Medical College of Soochow University, Suzhou 215123, P R China
- Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education 215123, P R China
| | - Xinyu Qiu
- School of Radiation Medicine and Protection, Medical College of Soochow University, Suzhou 215123, P R China
- Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education 215123, P R China
| | - Fang Li
- School of Biology & Basic Medical Sciences, Soochow University, Suzhou 215123, P R China
| | - Qiu Chen
- School of Radiation Medicine and Protection, Medical College of Soochow University, Suzhou 215123, P R China
- Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education 215123, P R China
| | - Fengmei Cui
- School of Radiation Medicine and Protection, Medical College of Soochow University, Suzhou 215123, P R China
- Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education 215123, P R China
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Shu Y, He Y, Ye G, Liu X, Huang J, Zhang Q, Tian D, Wang T, Shu J. Curcumin inhibits the activity and induces apoptosis of activated hepatic stellate cell by suppressing autophagy. J Cell Biochem 2023; 124:1764-1778. [PMID: 37909649 DOI: 10.1002/jcb.30487] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Revised: 09/09/2023] [Accepted: 09/25/2023] [Indexed: 11/03/2023]
Abstract
Curcumin, a kind of natural compound, has been previously proven to inhibit the autophagy in hepatic stellate cells (HSCs) and induce their apoptosis. However, it is not clear whether the enhanced apoptosis of activated HSCs (aHSCs) caused by curcumin depends on autophagy inhibition. We aim to verify this hypothesis and explore the potential mechanisms in this study. Immortalized human HSC line LX-2 was used as an experimental specimen and pretreated with transforming growth factor β1(TGF-β1) for 24 h to activate it before drug application. The levels of autophagy, apoptosis, cell activity, lipid metabolism, and the activity of the PI3K/Akt/mTOR signal pathway were evaluated by multiple methods, such as Western blotting, mcherry-EGFP-LC3B adenoviruses transfection, immunofluorescence, Nile Red staining, flow cytometry among others. Our results showed that rapamycin, an autophagy activator, could partly offset the effects of curcumin on autophagy and apoptosis of LX-2 cells, while 3-Methyladenine (3-MA), an autophagy inhibitor, could enhance these effects. Furthermore, curcumin could promote the activity of the PI3K/Akt/mTOR signal pathway in LX-2 cells, while PI3K inhibitor could partly offset this effect and increase the autophagy level. Overall, we demonstrated that curcumin could inhibit the activity and promote LX-2 cells apoptosis by suppressing autophagy by activating the PI3K/Akt/mTOR signal pathway. In addition, lipid recovery and energy deprivation due to autophagy inhibition may be the exact mechanism by which curcumin attenuates the pro-fibrotic activity of LX-2.
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Affiliation(s)
- Yongxiang Shu
- Department of Gastroenterology, Guangzhou Red Cross Hospital of Jinan University, Guangzhou, China
| | - Yajun He
- Department of Clinical laboratory, Guangzhou Red Cross Hospital of Jinan University, Guangzhou, China
| | - Guorong Ye
- Department of Gastroenterology, Guangzhou Red Cross Hospital of Jinan University, Guangzhou, China
| | - Xuyou Liu
- Department of Gastroenterology, Guangzhou Red Cross Hospital of Jinan University, Guangzhou, China
| | - Jiahuang Huang
- Department of Gastroenterology, Guangzhou Red Cross Hospital of Jinan University, Guangzhou, China
| | - Qinghui Zhang
- Department of Gastroenterology, Guangzhou Red Cross Hospital of Jinan University, Guangzhou, China
| | - Da Tian
- Department of Gastroenterology, Guangzhou Red Cross Hospital of Jinan University, Guangzhou, China
| | - Tengyan Wang
- Department of Gastroenterology, Guangzhou Red Cross Hospital of Jinan University, Guangzhou, China
| | - Jianchang Shu
- Department of Gastroenterology, Guangzhou Red Cross Hospital of Jinan University, Guangzhou, China
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Zhang YW, Hou LS, Xing JH, Zhang TR, Zhou SY, Zhang BL. Two-Membrane Hybrid Nanobiomimetic Delivery System for Targeted Autophagy Inhibition of Activated Hepatic Stellate Cells To Synergistically Treat Liver Fibrosis. ACS APPLIED MATERIALS & INTERFACES 2023. [PMID: 37899504 DOI: 10.1021/acsami.3c11046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/31/2023]
Abstract
Liver fibrosis is one of the most common and highly prevalent chronic liver diseases caused by multiple pathogenic factors, and there is still no effective therapeutic drugs up to now. The activated hepatic stellate cells (aHSCs) are the main executor in liver fibrosis, and the autophagy plays a key role in the proliferation and differentiation of aHSCs, which promotes the development of liver fibrosis. However, autophagy has the opposite effect on the different kinds of liver cells in the development of liver fibrosis, and the clinical treatment has been limited by the poor selectivity and inefficient drug delivery to aHSCs. Therefore, in this study, a liposome (Lip) and exosome (Exo) two-membrane hybrid nanobiomimetic delivery system HCQ@VA-Lip-Exo was designed, which was modified by vitamin A (VA) to target the aHSCs and carried the autophagy inhibitor hydroxychloroquine (HCQ). The experimental results in vitro and in vivo revealed that the constructed aHSC-targeted hybrid delivery system HCQ@VA-Lip-Exo combined with the benefits of HCQ and exosomes derived from bone marrow mesenchymal stem cells. HCQ@VA-Lip-Exo had good aHSC-targeted delivery ability, effective autophagy inhibition, and synergistical anti-liver fibrosis performance, thus reducing the production and deposition of the extracellular matrix to inhibit the liver fibrosis. This combined strategy provided a potential idea for the construction and clinical application of a two-membrane hybrid delivery system as an effective targeted therapy of liver fibrosis.
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Affiliation(s)
- Yao-Wen Zhang
- Department of Pharmaceutics, School of Pharmacy, Fourth Military Medical University, Xi'an, Shaanxi 710032, People's Republic of China
| | - Li-Shuang Hou
- Department of Pharmaceutics, School of Pharmacy, Fourth Military Medical University, Xi'an, Shaanxi 710032, People's Republic of China
| | - Jie-Hua Xing
- Department of Pharmaceutics, School of Pharmacy, Fourth Military Medical University, Xi'an, Shaanxi 710032, People's Republic of China
| | - Tang-Rui Zhang
- Department of Pharmaceutics, School of Pharmacy, Fourth Military Medical University, Xi'an, Shaanxi 710032, People's Republic of China
| | - Si-Yuan Zhou
- Department of Pharmaceutics, School of Pharmacy, Fourth Military Medical University, Xi'an, Shaanxi 710032, People's Republic of China
- Key Laboratory of Pharmacology of the State Administration of Traditional Chinese Medicine, Fourth Military Medical University, Xi'an, Shaanxi 710032, People's Republic of China
| | - Bang-Le Zhang
- Department of Pharmaceutics, School of Pharmacy, Fourth Military Medical University, Xi'an, Shaanxi 710032, People's Republic of China
- Key Laboratory of Pharmacology of the State Administration of Traditional Chinese Medicine, Fourth Military Medical University, Xi'an, Shaanxi 710032, People's Republic of China
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Myint M, Oppedisano F, De Giorgi V, Kim BM, Marincola FM, Alter HJ, Nesci S. Inflammatory signaling in NASH driven by hepatocyte mitochondrial dysfunctions. J Transl Med 2023; 21:757. [PMID: 37884933 PMCID: PMC10605416 DOI: 10.1186/s12967-023-04627-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Accepted: 10/14/2023] [Indexed: 10/28/2023] Open
Abstract
Liver steatosis, inflammation, and variable degrees of fibrosis are the pathological manifestations of nonalcoholic steatohepatitis (NASH), an aggressive presentation of the most prevalent chronic liver disease in the Western world known as nonalcoholic fatty liver (NAFL). Mitochondrial hepatocyte dysfunction is a primary event that triggers inflammation, affecting Kupffer and hepatic stellate cell behaviour. Here, we consider the role of impaired mitochondrial function caused by lipotoxicity during oxidative stress in hepatocytes. Dysfunction in oxidative phosphorylation and mitochondrial ROS production cause the release of damage-associated molecular patterns from dying hepatocytes, leading to activation of innate immunity and trans-differentiation of hepatic stellate cells, thereby driving fibrosis in NASH.
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Affiliation(s)
| | - Francesca Oppedisano
- Department of Health Sciences, Institute of Research for Food Safety and Health, University "Magna Græcia" of Catanzaro, Catanzaro, Italy
| | - Valeria De Giorgi
- Department of Transfusion Medicine, Clinical Center, National Institutes of Health, Bethesda, USA
| | | | | | - Harvey J Alter
- Department of Transfusion Medicine, Clinical Center, National Institutes of Health, Bethesda, USA
| | - Salvatore Nesci
- Department of Veterinary Medical Sciences, University of Bologna, Ozzano Emilia, Italy.
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Wang S, Friedman SL. Found in translation-Fibrosis in metabolic dysfunction-associated steatohepatitis (MASH). Sci Transl Med 2023; 15:eadi0759. [PMID: 37792957 PMCID: PMC10671253 DOI: 10.1126/scitranslmed.adi0759] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2023] [Accepted: 09/15/2023] [Indexed: 10/06/2023]
Abstract
Metabolic dysfunction-associated steatohepatitis (MASH) is a severe form of liver disease that poses a global health threat because of its potential to progress to advanced fibrosis, leading to cirrhosis and liver cancer. Recent advances in single-cell methodologies, refined disease models, and genetic and epigenetic insights have provided a nuanced understanding of MASH fibrogenesis, with substantial cellular heterogeneity in MASH livers providing potentially targetable cell-cell interactions and behavior. Unlike fibrogenesis, mechanisms underlying fibrosis regression in MASH are still inadequately understood, although antifibrotic targets have been recently identified. A refined antifibrotic treatment framework could lead to noninvasive assessment and targeted therapies that preserve hepatocellular function and restore the liver's architectural integrity.
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Affiliation(s)
- Shuang Wang
- Division of Liver Diseases, Icahn School of Medicine at Mount Sinai, New York, NY 10029
| | - Scott L. Friedman
- Division of Liver Diseases, Icahn School of Medicine at Mount Sinai, New York, NY 10029
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40
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Lee JH, Kim KM, Jung EH, Lee HR, Yang JH, Cho SS, Ki SH. Parkin-Mediated Mitophagy by TGF-β Is Connected with Hepatic Stellate Cell Activation. Int J Mol Sci 2023; 24:14826. [PMID: 37834275 PMCID: PMC10573240 DOI: 10.3390/ijms241914826] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Revised: 09/27/2023] [Accepted: 09/28/2023] [Indexed: 10/15/2023] Open
Abstract
Hepatic stellate cells (HSCs) are the main contributors to the development and progression of liver fibrosis. Parkin is an E3 ligase involved in mitophagy mediated by lysosomes that maintains mitochondrial homeostasis. Unfortunately, there is little information regarding the regulation of parkin by transforming growth factor-β (TGF-β) and its association with HSC trans-differentiation. This study showed that parkin is upregulated in fibrotic conditions and elucidated the underlying mechanism. Parkin was observed in the cirrhotic region of the patient liver tissues and visualized using immunostaining and immunoblotting of mouse fibrotic liver samples and primary HSCs. The role of parkin-mediated mitophagy in hepatic fibrogenesis was examined using TGF-β-treated LX-2 cells with mitophagy inhibitor, mitochondrial division inhibitor 1. Parkin overexpression and its colocalization with desmin in human tissues were found. Increased parkin in fibrotic liver homogenates of mice was observed. Parkin was expressed more abundantly in HSCs than in hepatocytes and was upregulated under TGF-β. TGF-β-induced parkin was due to Smad3. TGF-β facilitated mitochondrial translocation, leading to mitophagy activation, reversed by mitophagy inhibitor. However, TGF-β did not change mitochondrial function. Mitophagy inhibitor suppressed profibrotic genes and HSC migration mediated by TGF-β. Collectively, parkin-involved mitophagy by TGF-β facilitates HSC activation, suggesting mitophagy may utilize targets for liver fibrosis.
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Affiliation(s)
- Ji Hyun Lee
- College of Pharmacy, Chosun University, Gwangju 61452, Republic of Korea (E.H.J.); (H.R.L.); (S.S.C.)
| | - Kyu Min Kim
- College of Pharmacy, Chosun University, Gwangju 61452, Republic of Korea (E.H.J.); (H.R.L.); (S.S.C.)
- Department of Biomedical Science, College of Natural Science, Chosun University, Gwangju 61452, Republic of Korea
| | - Eun Hee Jung
- College of Pharmacy, Chosun University, Gwangju 61452, Republic of Korea (E.H.J.); (H.R.L.); (S.S.C.)
| | - Hye Rim Lee
- College of Pharmacy, Chosun University, Gwangju 61452, Republic of Korea (E.H.J.); (H.R.L.); (S.S.C.)
| | - Ji Hye Yang
- College of Korean Medicine, Dongshin University, Naju 58245, Republic of Korea;
| | - Sam Seok Cho
- College of Pharmacy, Chosun University, Gwangju 61452, Republic of Korea (E.H.J.); (H.R.L.); (S.S.C.)
| | - Sung Hwan Ki
- College of Pharmacy, Chosun University, Gwangju 61452, Republic of Korea (E.H.J.); (H.R.L.); (S.S.C.)
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41
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Raevens S. Autophagy in liver regeneration: Unravelling the endothelial cell's role and therapeutic prospects. Liver Int 2023; 43:2055-2056. [PMID: 37718717 DOI: 10.1111/liv.15694] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Revised: 08/01/2023] [Accepted: 08/03/2023] [Indexed: 09/19/2023]
Affiliation(s)
- Sarah Raevens
- Department of Gastroenterology and Hepatology, Ghent University Hospital, Ghent, Belgium
- Hepatology Research Unit, Department Internal Medicine and Pediatrics, Liver Research Center, Ghent University, Ghent, Belgium
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42
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Hanquier Z, Misra J, Baxter R, Maiers JL. Stress and Liver Fibrogenesis: Understanding the Role and Regulation of Stress Response Pathways in Hepatic Stellate Cells. THE AMERICAN JOURNAL OF PATHOLOGY 2023; 193:1363-1376. [PMID: 37422148 PMCID: PMC10548279 DOI: 10.1016/j.ajpath.2023.06.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Revised: 05/24/2023] [Accepted: 06/06/2023] [Indexed: 07/10/2023]
Abstract
Stress response pathways are crucial for cells to adapt to physiological and pathologic conditions. Increased transcription and translation in response to stimuli place a strain on the cell, necessitating increased amino acid supply, protein production and folding, and disposal of misfolded proteins. Stress response pathways, such as the unfolded protein response (UPR) and the integrated stress response (ISR), allow cells to adapt to stress and restore homeostasis; however, their role and regulation in pathologic conditions, such as hepatic fibrogenesis, are unclear. Liver injury promotes fibrogenesis through activation of hepatic stellate cells (HSCs), which produce and secrete fibrogenic proteins to promote tissue repair. This process is exacerbated in chronic liver disease, leading to fibrosis and, if unchecked, cirrhosis. Fibrogenic HSCs exhibit activation of both the UPR and ISR, due in part to increased transcriptional and translational demands, and these stress responses play important roles in fibrogenesis. Targeting these pathways to limit fibrogenesis or promote HSC apoptosis is a potential antifibrotic strategy, but it is limited by our lack of mechanistic understanding of how the UPR and ISR regulate HSC activation and fibrogenesis. This article explores the role of the UPR and ISR in the progression of fibrogenesis, and highlights areas that require further investigation to better understand how the UPR and ISR can be targeted to limit hepatic fibrosis progression.
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Affiliation(s)
- Zachary Hanquier
- Department of Molecular and Medical Genetics, Indiana University School of Medicine, Indianapolis, Indiana
| | - Jagannath Misra
- Department of Biochemistry and Molecular Biology, Indiana University School of Medicine, Indianapolis, Indiana
| | - Reese Baxter
- Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana
| | - Jessica L Maiers
- Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana.
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Abstract
Chronic liver diseases such as nonalcoholic fatty liver disease (NAFLD) or viral hepatitis are characterized by persistent inflammation and subsequent liver fibrosis. Liver fibrosis critically determines long-term morbidity (for example, cirrhosis or liver cancer) and mortality in NAFLD and nonalcoholic steatohepatitis (NASH). Inflammation represents the concerted response of various hepatic cell types to hepatocellular death and inflammatory signals, which are related to intrahepatic injury pathways or extrahepatic mediators from the gut-liver axis and the circulation. Single-cell technologies have revealed the heterogeneity of immune cell activation concerning disease states and the spatial organization within the liver, including resident and recruited macrophages, neutrophils as mediators of tissue repair, auto-aggressive features of T cells as well as various innate lymphoid cell and unconventional T cell populations. Inflammatory responses drive the activation of hepatic stellate cells (HSCs), and HSC subsets, in turn, modulate immune mechanisms via chemokines and cytokines or transdifferentiate into matrix-producing myofibroblasts. Current advances in understanding the pathogenesis of inflammation and fibrosis in the liver, mainly focused on NAFLD or NASH owing to the high unmet medical need, have led to the identification of several therapeutic targets. In this Review, we summarize the inflammatory mediators and cells in the diseased liver, fibrogenic pathways and their therapeutic implications.
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Affiliation(s)
- Linda Hammerich
- Department of Hepatology and Gastroenterology, Campus Virchow-Klinikum and Campus Charité Mitte, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Frank Tacke
- Department of Hepatology and Gastroenterology, Campus Virchow-Klinikum and Campus Charité Mitte, Charité - Universitätsmedizin Berlin, Berlin, Germany.
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44
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Cogliati B, Yashaswini CN, Wang S, Sia D, Friedman SL. Friend or foe? The elusive role of hepatic stellate cells in liver cancer. Nat Rev Gastroenterol Hepatol 2023; 20:647-661. [PMID: 37550577 PMCID: PMC10671228 DOI: 10.1038/s41575-023-00821-z] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 07/06/2023] [Indexed: 08/09/2023]
Abstract
Liver fibrosis is a substantial risk factor for the development and progression of liver cancer, which includes hepatocellular carcinoma (HCC) and intrahepatic cholangiocarcinoma (iCCA). Studies utilizing cell fate mapping and single-cell transcriptomics techniques have identified quiescent perisinusoidal hepatic stellate cells (HSCs) as the primary source of activated collagen-producing HSCs and liver cancer-associated fibroblasts (CAFs) in HCC and liver metastasis, complemented in iCCA by contributions from portal fibroblasts. At the same time, integrative computational analysis of single-cell, single-nucleus and spatial RNA sequencing data have revealed marked heterogeneity among HSCs and CAFs, with distinct subpopulations displaying unique gene expression signatures and functions. Some of these subpopulations have divergent roles in promoting or inhibiting liver fibrogenesis and carcinogenesis. In this Review, we discuss the dual roles of HSC subpopulations in liver fibrogenesis and their contribution to liver cancer promotion, progression and metastasis. We review the transcriptomic and functional similarities between HSC and CAF subpopulations, highlighting the pathways that either promote or prevent fibrosis and cancer, and the immunological landscape from which these pathways emerge. Insights from ongoing studies will yield novel strategies for developing biomarkers, assessing prognosis and generating new therapies for both HCC and iCCA prevention and treatment.
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Affiliation(s)
- Bruno Cogliati
- Division of Liver Diseases, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- Department of Pathology, School of Veterinary Medicine and Animal Science, University of São Paulo, São Paulo, SP, Brazil
| | | | - Shuang Wang
- Division of Liver Diseases, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Daniela Sia
- Division of Liver Diseases, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Scott L Friedman
- Division of Liver Diseases, Icahn School of Medicine at Mount Sinai, New York, NY, USA.
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45
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Sharma S, Le Guillou D, Chen JY. Cellular stress in the pathogenesis of nonalcoholic steatohepatitis and liver fibrosis. Nat Rev Gastroenterol Hepatol 2023; 20:662-678. [PMID: 37679454 DOI: 10.1038/s41575-023-00832-w] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 07/26/2023] [Indexed: 09/09/2023]
Abstract
The burden of chronic liver disease is rising substantially worldwide. Fibrosis, characterized by excessive deposition of extracellular matrix proteins, is the common pathway leading to cirrhosis, and limited treatment options are available. There is increasing evidence suggesting the role of cellular stress responses contributing to fibrogenesis. This Review provides an overview of studies that analyse the role of cellular stress in different cell types involved in fibrogenesis, including hepatocytes, hepatic stellate cells, liver sinusoidal endothelial cells and macrophages.
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Affiliation(s)
- Sachin Sharma
- Department of Medicine, University of California, San Francisco, San Francisco, CA, USA
- The Liver Center, University of California, San Francisco, San Francisco, CA, USA
| | - Dounia Le Guillou
- Department of Medicine, University of California, San Francisco, San Francisco, CA, USA
- The Liver Center, University of California, San Francisco, San Francisco, CA, USA
| | - Jennifer Y Chen
- Department of Medicine, University of California, San Francisco, San Francisco, CA, USA.
- The Liver Center, University of California, San Francisco, San Francisco, CA, USA.
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46
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Peng X, Yang H, Tao L, Xiao J, Zeng Y, Shen Y, Yu X, Zhu F, Qin J. Fluorofenidone alleviates liver fibrosis by inhibiting hepatic stellate cell autophagy via the TGF-β1/Smad pathway: implications for liver cancer. PeerJ 2023; 11:e16060. [PMID: 37790613 PMCID: PMC10542821 DOI: 10.7717/peerj.16060] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Accepted: 08/17/2023] [Indexed: 10/05/2023] Open
Abstract
Objectives Liver fibrosis is a key stage in the progression of various chronic liver diseases to cirrhosis and liver cancer, but at present, there is no effective treatment. This study investigated the therapeutic effect of the new antifibrotic drug fluorofenidone (AKF-PD) on liver fibrosis and its related mechanism, providing implications for liver cancer. Materials and Methods The effects of AKF-PD on hepatic stellate cell (HSC) autophagy and extracellular matrix (ECM) expression were assessed in a carbon tetrachloride (CCl4)-induced rat liver fibrosis model. In vitro, HSC-T6 cells were transfected with Smad2 and Smad3 overexpression plasmids and treated with AKF-PD. The viability and number of autophagosomes in HSC-T6 cells were examined. The protein expression levels of Beclin-1, LC3 and P62 were examined by Western blotting. The Cancer Genome Atlas (TCGA) database was used for comprehensively analyzing the prognostic values of SMAD2 and SMAD3 in liver cancer. The correlation between SMAD2, SMAD3, and autophagy-related scores in liver cancer was explored. The drug prediction of autophagy-related scores in liver cancer was explored. Results AKF-PD attenuated liver injury and ECM deposition in the CCl4-induced liver fibrosis model. In vitro, the viability and number of autophagosomes in HSCs were reduced significantly by AKF-PD treatment. Meanwhile, the protein expression of FN, α-SMA, collagen III, Beclin-1 and LC3 was increased, and P62 was reduced by the overexpression of Smad2 and Smad3; however, AKF-PD reversed these effects. SMAD2 and SMAD3 were hazardous factors in liver cancer. SMAD2 and SMAD3 correlated with autophagy-related scores in liver cancer. Autophagy-related scores could predict drug response in liver cancer. Conclusions AKF-PD alleviates liver fibrosis by inhibiting HSC autophagy via the transforming growth factor (TGF)-β1/Smadpathway. Our study provided some implications about how liver fibrosis was connected with liver cancer by SMAD2/SMAD3 and autophagy.
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Affiliation(s)
- Xiongqun Peng
- Department of Gastroenterology, The Affiliated Changsha Central Hospital, Hengyang Medical School, University of South China, Changsha, China
| | - Huixiang Yang
- Department of Gastroenterology, Xiangya Hospital, Central South University, Changsha, China
| | - Lijian Tao
- Department of Nephropathy, Xiangya Hospital, Central South University, Changsha, China
| | - Jingni Xiao
- Department of Nephrology, The Affiliated Changsha Central Hospital, Hengyang Medical School, University of South China, Changsha, China
| | - Ya Zeng
- Department of Gastroenterology, The Affiliated Changsha Central Hospital, Hengyang Medical School, University of South China, Changsha, China
| | - Yueming Shen
- Department of Gastroenterology, The Affiliated Changsha Central Hospital, Hengyang Medical School, University of South China, Changsha, China
| | - Xueke Yu
- Department of Gastroenterology, The Affiliated Changsha Central Hospital, Hengyang Medical School, University of South China, Changsha, China
| | - Fei Zhu
- Department of General Surgery, The Affiliated Changsha Central Hospital, Hengyang Medical School, University of South China, Changsha, China
| | - Jiao Qin
- Department of Nephrology, The Affiliated Changsha Central Hospital, Hengyang Medical School, University of South China, Changsha, China
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47
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Wu Y, Yin AH, Sun JT, Xu WH, Zhang CQ. Angiotensin-converting enzyme 2 improves liver fibrosis in mice by regulating autophagy of hepatic stellate cells. World J Gastroenterol 2023; 29:4975-4990. [PMID: 37732000 PMCID: PMC10507507 DOI: 10.3748/wjg.v29.i33.4975] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Revised: 07/27/2023] [Accepted: 08/15/2023] [Indexed: 09/01/2023] Open
Abstract
BACKGROUND Liver fibrosis is the common pathological process associated with the occurrence and development of various chronic liver diseases. At present, there is still a lack of effective prevention and treatment methods in clinical practice. Hepatic stellate cell (HSC) plays a key role in liver fibrogenesis. In recent years, the study of liver fibrosis targeting HSC autophagy has become a hot spot in this research field. Angiotensin-converting enzyme 2 (ACE2) is a key negative regulator of renin-angiotensin system, and its specific molecular mechanism on autophagy and liver fibrosis needs to be further explored. AIM To investigate the effect of ACE2 on hepatic fibrosis in mice by regulating HSC autophagy through the Adenosine monophosphate activates protein kinases (AMPK)/mammalian target of rapamycin (mTOR) pathway. METHODS Overexpression of ACE2 in a mouse liver fibrosis model was induced by injection of liver-specific recombinant adeno-associated virus ACE2 vector (rAAV2/8-ACE2). The degree of liver fibrosis was assessed by histopathological staining and the biomarkers in mouse serum were measured by Luminex multifactor analysis. The number of apoptotic HSCs was assessed by terminal deoxynucleoitidyl transferase-mediated dUTP nick-end labeling (TUNEL) and immunofluorescence staining. Transmission electron microscopy was used to identify the changes in the number of HSC autophagosomes. The effect of ACE2 overexpression on autophagy-related proteins was evaluated by multicolor immunofluorescence staining. The expression of autophagy-related indicators and AMPK pathway-related proteins was measured by western blotting. RESULTS A mouse model of liver fibrosis was successfully established after 8 wk of intraperitoneal injection of carbon tetrachloride (CCl4). rAAV2/8-ACE2 administration reduced collagen deposition and alleviated the degree of liver fibrosis in mice. The serum levels of platelet-derived growth factor, angiopoietin-2, vascular endothelial growth factor and angiotensin II were decreased, while the levels of interleukin (IL)-10 and angiotensin- (1-7) were increased in the rAAV2/8-ACE2 group. In addition, the expression of alpha-smooth muscle actin, fibronectin, and CD31 was down-regulated in the rAAV2/8-ACE2 group. TUNEL and immunofluorescence staining showed that rAAV2/8-ACE2 injection increased HSC apoptosis. Moreover, rAAV2/8-ACE2 injection notably decreased the number of autophagosomes and the expression of autophagy-related proteins (LC3I, LC3II, Beclin-1), and affected the expression of AMPK pathway-related proteins (AMPK, p-AMPK, p-mTOR). CONCLUSION ACE2 overexpression can inhibit HSC activation and promote cell apoptosis by regulating HSC autophagy through the AMPK/mTOR pathway, thereby alleviating liver fibrosis and hepatic sinusoidal remodeling.
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Affiliation(s)
- Ying Wu
- Department of Gastroenterology, The Second Hospital, Cheeloo College of Medicine, Shandong University, Jinan 250033, Shandong Province, China
| | - Ai-Hong Yin
- Department of Gastroenterology, Shandong Second Provincial General Hospital, Jinan 250000, Shandong Province, China
| | - Jun-Tao Sun
- Department of Gastroenterology, The Second Hospital, Cheeloo College of Medicine, Shandong University, Jinan 250033, Shandong Province, China
| | - Wei-Hua Xu
- Department of Gastroenterology, The Second Hospital, Cheeloo College of Medicine, Shandong University, Jinan 250033, Shandong Province, China
| | - Chun-Qing Zhang
- Department of Gastroenterology, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan 250021, Shandong Province, China
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Zhang Y, Zhang Y, Chen T, Lin Y, Gong J, Xu Q, Wang J, Li J, Meng Y, Li Y, Li X. Caveolin-1 depletion attenuates hepatic fibrosis via promoting SQSTM1-mediated PFKL degradation in HSCs. Free Radic Biol Med 2023; 204:95-107. [PMID: 37116593 DOI: 10.1016/j.freeradbiomed.2023.04.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 04/15/2023] [Accepted: 04/18/2023] [Indexed: 04/30/2023]
Abstract
The key glycolytic enzyme phosphofructokinase (PFK) is responsible for maintaining glycolytic stability and an important energy source for activating hepatic stellate cells (HSCs). However, its regulation in activated HSCs remains unclear. Caveolin-1 (Cav1), a major constituent of caveolae, has emerged as a key target for triggering glycolysis. However, the relationship between Cav1 and glycolysis during HSC activation is not well established. In this study, Cav1 was upregulated in mouse and human fibrotic liver tissues. We concluded that HSC-specific Cav1 knockdown markedly alleviates liver injury and fibrosis. Mechanistically, Cav1 was elevated during primary mouse HSC activation, competing with SQSTM1 for the regulatory subunit of PFK liver type and inhibiting the SQSTM1-mediated autophagy-independent lysosomal degradation pathway to sustain HSC activation. We also identified the heptapeptide alamandine as a promising therapeutic agent that downregulates Cav1 protein levels via proteasomal degradation and may impair glycolysis. Our study provides evidence of the crucial role and mechanism of Cav1 in the glucose metabolic network in HSCs and highlights Cav1 as a critical therapeutic target for the treatment of liver fibrosis.
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Affiliation(s)
- Yan Zhang
- Department of Emergency Medicine, Nanfang Hospital, Southern Medical University, 510515, Guangzhou, China; Guangdong Provincial Key Laboratory of Gastroenterology, Department of Gastroenterology, Nanfang Hospital, Southern Medical University, 510515, Guangzhou, China
| | - Yijie Zhang
- Department of Emergency Medicine, Nanfang Hospital, Southern Medical University, 510515, Guangzhou, China; Guangdong Provincial Key Laboratory of Gastroenterology, Department of Gastroenterology, Nanfang Hospital, Southern Medical University, 510515, Guangzhou, China
| | - Tingting Chen
- Department of Emergency Medicine, Nanfang Hospital, Southern Medical University, 510515, Guangzhou, China; Guangdong Provincial Key Laboratory of Gastroenterology, Department of Gastroenterology, Nanfang Hospital, Southern Medical University, 510515, Guangzhou, China
| | - Ying Lin
- Department of Emergency Medicine, Nanfang Hospital, Southern Medical University, 510515, Guangzhou, China; Guangdong Provincial Key Laboratory of Gastroenterology, Department of Gastroenterology, Nanfang Hospital, Southern Medical University, 510515, Guangzhou, China
| | - Jiacheng Gong
- Department of Emergency Medicine, Nanfang Hospital, Southern Medical University, 510515, Guangzhou, China; Guangdong Provincial Key Laboratory of Gastroenterology, Department of Gastroenterology, Nanfang Hospital, Southern Medical University, 510515, Guangzhou, China
| | - Qihan Xu
- Department of Emergency Medicine, Nanfang Hospital, Southern Medical University, 510515, Guangzhou, China; Guangdong Provincial Key Laboratory of Gastroenterology, Department of Gastroenterology, Nanfang Hospital, Southern Medical University, 510515, Guangzhou, China
| | - Jun Wang
- Department of Emergency Medicine, Nanfang Hospital, Southern Medical University, 510515, Guangzhou, China; Guangdong Provincial Key Laboratory of Gastroenterology, Department of Gastroenterology, Nanfang Hospital, Southern Medical University, 510515, Guangzhou, China
| | - Jierui Li
- Department of Emergency Medicine, Nanfang Hospital, Southern Medical University, 510515, Guangzhou, China; Guangdong Provincial Key Laboratory of Gastroenterology, Department of Gastroenterology, Nanfang Hospital, Southern Medical University, 510515, Guangzhou, China
| | - Ying Meng
- Department of Respiratory Diseases, Nanfang Hospital, Southern Medical University, 510515, Guangzhou, China.
| | - Yang Li
- Department of Emergency Medicine, Nanfang Hospital, Southern Medical University, 510515, Guangzhou, China.
| | - Xu Li
- Department of Emergency Medicine, Nanfang Hospital, Southern Medical University, 510515, Guangzhou, China.
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Shao C, Xu H, Sun X, Huang Y, Guo W, He Y, Ye L, Wang Z, Huang J, Liang X, Zhang J. New Perspectives on Chinese Medicine in Treating Hepatic Fibrosis: Lipid Droplets in Hepatic Stellate Cells. THE AMERICAN JOURNAL OF CHINESE MEDICINE 2023; 51:1413-1429. [PMID: 37429706 DOI: 10.1142/s0192415x23500647] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/12/2023]
Abstract
Hepatic fibrosis (HF) is a wound healing response featuring excessive deposition of the extracellular matrix (ECM) and activation of hepatic stellate cells (HSCs) that occurs during chronic liver injury. As an initial stage of various liver diseases, HF is a reversible pathological process that, if left unchecked, can escalate into cirrhosis, liver failure, and liver cancer. HF is a life-threatening disease presenting morbidity and mortality challenges to healthcare systems worldwide. There is no specific and effective anti-HF therapy, and the toxic side effects of the available drugs also impose a heavy financial burden on patients. Therefore, it is significant to study the pathogenesis of HF and explore effective prevention and treatment measures. Formerly called adipocytes, or fat storage cells, HSCs regulate liver growth, immunity, and inflammation, as well as energy and nutrient homeostasis. HSCs in a quiescent state do not proliferate and store abundant lipid droplets (LDs). Catabolism of LDs is characteristic of the activation of HSCs and morphological transdifferentiation of cells into contractile and proliferative myofibroblasts, resulting in the deposition of ECM and the development of HF. Recent studies have revealed that various Chinese medicines (e.g., Artemisia annua, turmeric, Scutellaria baicalensis Georgi, etc.) are able to effectively reduce the degradation of LDs in HSCs. Therefore, this study takes the modification of LDs in HSCs as an entry point to elaborate on the process of Chinese medicine intervening in the loss of LDs in HSCs and the mechanism of action for the treatment of HF.
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Affiliation(s)
- Chang Shao
- School of Basic Medical Sciences, Hangzhou 310053, P. R. China
| | - Huihui Xu
- The First College of Clinical Medicine, Zhejiang Chinese Medical University, Hangzhou 310053, P. R. China
| | - Xiguang Sun
- School of Basic Medical Sciences, Hangzhou 310053, P. R. China
| | - Yan Huang
- School of Basic Medical Sciences, Hangzhou 310053, P. R. China
| | - Wenqin Guo
- School of Basic Medical Sciences, Hangzhou 310053, P. R. China
| | - Yi He
- School of Basic Medical Sciences, Hangzhou 310053, P. R. China
| | - Linmao Ye
- School of Basic Medical Sciences, Hangzhou 310053, P. R. China
| | - Zhili Wang
- School of Basic Medical Sciences, Hangzhou 310053, P. R. China
| | - Jiaxin Huang
- School of Basic Medical Sciences, Hangzhou 310053, P. R. China
| | - Xiaofan Liang
- School of Basic Medical Sciences, Hangzhou 310053, P. R. China
| | - Junjie Zhang
- School of Basic Medical Sciences, Hangzhou 310053, P. R. China
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50
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Yenilmez B, Harney S, DiMarzio C, Kelly M, Min K, Echeverria D, Bramato BM, Jackson SO, Reddig K, Kim JK, Khvorova A, Czech MP. Dual targeting of hepatocyte DGAT2 and stellate cell FASN alleviates nonalcoholic steatohepatitis in mice. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.07.05.547848. [PMID: 37461560 PMCID: PMC10350091 DOI: 10.1101/2023.07.05.547848] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 07/25/2023]
Abstract
Nonalcoholic steatohepatitis (NASH) is a malady of multiple cell types associated with hepatocyte triglyceride (TG) accumulation, macrophage inflammation, and stellate cell-induced fibrosis, with no approved therapeutics yet available. Here, we report that stellate cell fatty acid synthase (FASN) in de novo lipogenesis drives the autophagic flux that is required for stellate cell activation and fibrotic collagen production. Further, we employ a dual targeting approach to NASH that selectively depletes collagen through selective stellate cell knockout of FASN (using AAV9-LRAT Cre in FASNfl/fl mice), while lowering hepatocyte triglyceride by depleting DGAT2 with a GalNac-conjugated, fully chemically modified siRNA. DGAT2 silencing in hepatocytes alone or in combination with stellate cell FASNKO reduced liver TG accumulation in a choline-deficient NASH mouse model, while FASNKO in hepatocytes alone (using AAV8-TBG Cre in FASNfl/fl mice) did not. Neither hepatocyte DGAT2 silencing alone nor FASNKO in stellate cells alone decreased fibrosis (total collagen), while loss of both DGAT2 plus FASN caused a highly significant attenuation of NASH. These data establish proof of concept that dual targeting of DGAT2 plus FASN alleviates NASH progression in mice far greater than targeting either gene product alone.
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Affiliation(s)
- Batuhan Yenilmez
- Program in Molecular Medicine, University of Massachusetts Chan Medical School, Worcester, MA, USA
| | - Shauna Harney
- Program in Molecular Medicine, University of Massachusetts Chan Medical School, Worcester, MA, USA
| | - Chloe DiMarzio
- Program in Molecular Medicine, University of Massachusetts Chan Medical School, Worcester, MA, USA
| | - Mark Kelly
- Program in Molecular Medicine, University of Massachusetts Chan Medical School, Worcester, MA, USA
| | - Kyounghee Min
- Program in Molecular Medicine, University of Massachusetts Chan Medical School, Worcester, MA, USA
| | - Dimas Echeverria
- Program in Molecular Medicine, University of Massachusetts Chan Medical School, Worcester, MA, USA
- RNA Therapeutics Institute, University of Massachusetts Chan Medical School, Worcester, MA, USA
| | - Brianna M. Bramato
- Program in Molecular Medicine, University of Massachusetts Chan Medical School, Worcester, MA, USA
- RNA Therapeutics Institute, University of Massachusetts Chan Medical School, Worcester, MA, USA
| | - Samuel O. Jackson
- Program in Molecular Medicine, University of Massachusetts Chan Medical School, Worcester, MA, USA
- RNA Therapeutics Institute, University of Massachusetts Chan Medical School, Worcester, MA, USA
| | - Keith Reddig
- Department of Radiology, University of Massachusetts Chan Medical School, Worcester, MA 01605, USA
| | - Jason K. Kim
- Program in Molecular Medicine, University of Massachusetts Chan Medical School, Worcester, MA, USA
- Division of Endocrinology, Metabolism, and Diabetes, Department of Medicine, University of Massachusetts Chan Medical School, Worcester, MA 01605, USA
| | - Anastasia Khvorova
- Program in Molecular Medicine, University of Massachusetts Chan Medical School, Worcester, MA, USA
- RNA Therapeutics Institute, University of Massachusetts Chan Medical School, Worcester, MA, USA
| | - Michael P. Czech
- Program in Molecular Medicine, University of Massachusetts Chan Medical School, Worcester, MA, USA
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