1
|
Flensted-Jensen M, Oró D, Rørbeck EA, Zhang C, Madsen MR, Madsen AN, Norlin J, Feigh M, Larsen S, Hansen HH. Dietary intervention reverses molecular markers of hepatocellular senescence in the GAN diet-induced obese and biopsy-confirmed mouse model of NASH. BMC Gastroenterol 2024; 24:59. [PMID: 38308212 PMCID: PMC10835988 DOI: 10.1186/s12876-024-03141-x] [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: 10/04/2023] [Accepted: 01/18/2024] [Indexed: 02/04/2024] Open
Abstract
BACKGROUND Hepatocellular senescence may be a causal factor in the development and progression of non-alcoholic steatohepatitis (NASH). The most effective currently available treatment for NASH is lifestyle intervention, including dietary modification. This study aimed to evaluate the effects of dietary intervention on hallmarks of NASH and molecular signatures of hepatocellular senescence in the Gubra-Amylin NASH (GAN) diet-induced obese (DIO) and biopsy-confirmed mouse model of NASH. METHODS GAN DIO-NASH mice with liver biopsy-confirmed NASH and fibrosis received dietary intervention by switching to chow feeding (chow reversal) for 8, 16 or 24 weeks. Untreated GAN DIO-NASH mice and chow-fed C57BL/6J mice served as controls. Pre-to-post liver biopsy histology was performed for within-subject evaluation of NAFLD Activity Score and fibrosis stage. Terminal endpoints included blood/liver biochemistry, quantitative liver histology, mitochondrial respiration and RNA sequencing. RESULTS Chow-reversal promoted substantial benefits on metabolic outcomes and liver histology, as demonstrated by robust weight loss, complete resolution of hepatomegaly, hypercholesterolemia, elevated transaminase levels and hepatic steatosis in addition to attenuation of inflammatory markers. Notably, all DIO-NASH mice demonstrated ≥ 2 point significant improvement in NAFLD Activity Score following dietary intervention. While not improving fibrosis stage, chow-reversal reduced quantitative fibrosis markers (PSR, collagen 1a1, α-SMA), concurrent with improved liver mitochondrial respiration, complete reversal of p21 overexpression, lowered γ-H2AX levels and widespread suppression of gene expression markers of hepatocellular senescence. CONCLUSIONS Dietary intervention (chow reversal) substantially improves metabolic, biochemical and histological hallmarks of NASH and fibrosis in GAN DIO-NASH mice. These benefits were reflected by progressive clearance of senescent hepatocellular cells, making the model suitable for profiling potential senotherapeutics in preclinical drug discovery for NASH.
Collapse
Affiliation(s)
- Mathias Flensted-Jensen
- Gubra, Hørsholm Kongevej 11B, 2970, Hørsholm, Denmark
- Xlab, Department of Biomedical Sciences, University of Copenhagen, Blegdamsvej 3, 2200, Copenhagen, Denmark
| | - Denise Oró
- Gubra, Hørsholm Kongevej 11B, 2970, Hørsholm, Denmark
| | | | - Chen Zhang
- Gubra, Hørsholm Kongevej 11B, 2970, Hørsholm, Denmark
- Present address: Novo Nordisk A/S, Beijing, China
| | | | | | - Jenny Norlin
- Liver Disease Research, Novo Nordisk A/S, Måløv, Denmark
| | - Michael Feigh
- Gubra, Hørsholm Kongevej 11B, 2970, Hørsholm, Denmark
| | - Steen Larsen
- Xlab, Department of Biomedical Sciences, University of Copenhagen, Blegdamsvej 3, 2200, Copenhagen, Denmark
- Clinical Research Centre, Medical University of Bialystok, Bialystok, Poland
| | | |
Collapse
|
2
|
Hu Q, Huang T. Regulation of the Cell Cycle by ncRNAs Affects the Efficiency of CDK4/6 Inhibition. Int J Mol Sci 2023; 24:ijms24108939. [PMID: 37240281 DOI: 10.3390/ijms24108939] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Revised: 05/12/2023] [Accepted: 05/15/2023] [Indexed: 05/28/2023] Open
Abstract
Cyclin-dependent kinases (CDKs) regulate cell division at multiple levels. Aberrant proliferation induced by abnormal cell cycle is a hallmark of cancer. Over the past few decades, several drugs that inhibit CDK activity have been created to stop the development of cancer cells. The third generation of selective CDK4/6 inhibition has proceeded into clinical trials for a range of cancers and is quickly becoming the backbone of contemporary cancer therapy. Non-coding RNAs, or ncRNAs, do not encode proteins. Many studies have demonstrated the involvement of ncRNAs in the regulation of the cell cycle and their abnormal expression in cancer. By interacting with important cell cycle regulators, preclinical studies have demonstrated that ncRNAs may decrease or increase the treatment outcome of CDK4/6 inhibition. As a result, cell cycle-associated ncRNAs may act as predictors of CDK4/6 inhibition efficacy and perhaps present novel candidates for tumor therapy and diagnosis.
Collapse
Affiliation(s)
- Qingyi Hu
- Department of Breast and Thyroid Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Tao Huang
- Department of Breast and Thyroid Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| |
Collapse
|
3
|
Wang Z, Zhu Y, Xia L, Li J, Song M, Yang C. Exercise-Induced ADAR2 Protects against Nonalcoholic Fatty Liver Disease through miR-34a. Nutrients 2022; 15:nu15010121. [PMID: 36615779 PMCID: PMC9824461 DOI: 10.3390/nu15010121] [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: 11/14/2022] [Revised: 12/14/2022] [Accepted: 12/23/2022] [Indexed: 12/29/2022] Open
Abstract
Nonalcoholic fatty liver disease (NAFLD) is a growing health problem that is closely associated with insulin resistance and hereditary susceptibility. Exercise is a beneficial approach to NAFLD. However, the relief mechanism of exercise training is still unknown. In this study, mice on a normal diet or a high-fat diet (HFD), combined with Nω-nitro-L-arginine methyl ester, hydrochloride (L-NAME) mice, were either kept sedentary or were subjected to a 12-week exercise running scheme. We found that exercise reduced liver steatosis in mice with diet-induced NAFLD. The hepatic adenosine deaminases acting on RNA 2 (ADAR2) were downregulated in NAFLD and were upregulated in the liver after 12-week exercise. Next, overexpression of ADAR2 inhibited and suppression promoted lipogenesis in HepG2 cells treated with oleic acid (OA), respectively. We found that ADAR2 could down-regulate mature miR-34a in hepatocytes. Functional reverse experiments further proved that miR-34a mimicry eliminated the suppression of ADAR2 overexpression in lipogenesis in vitro. Moreover, miR-34a inhibition and mimicry could also affect lipogenesis in hepatocytes. In conclusion, exercise-induced ADAR2 protects against lipogenesis during NAFLD by editing miR-34a. RNA editing mediated by ADAR2 may be a promising therapeutic candidate for NAFLD.
Collapse
Affiliation(s)
- Zhijing Wang
- Department of Gastroenterology and Hepatology, Tongji Hospital, School of Medicine, Tongji University, Shanghai 200092, China
| | - Yaru Zhu
- Department of Urology, Tongji Hospital, School of Medicine, Tongji University, Shanghai 200092, China
| | - Lu Xia
- Department of Gastroenterology and Hepatology, Tongji Hospital, School of Medicine, Tongji University, Shanghai 200092, China
| | - Jing Li
- Department of Gastroenterology and Hepatology, Tongji Hospital, School of Medicine, Tongji University, Shanghai 200092, China
- Correspondence: (J.L.); (M.S.); (C.Y.)
| | - Meiyi Song
- Department of Gastroenterology and Hepatology, Tongji Hospital, School of Medicine, Tongji University, Shanghai 200092, China
- Correspondence: (J.L.); (M.S.); (C.Y.)
| | - Changqing Yang
- Department of Gastroenterology and Hepatology, Tongji Hospital, School of Medicine, Tongji University, Shanghai 200092, China
- Correspondence: (J.L.); (M.S.); (C.Y.)
| |
Collapse
|
4
|
Pedroza-Diaz J, Arroyave-Ospina JC, Serna Salas S, Moshage H. Modulation of Oxidative Stress-Induced Senescence during Non-Alcoholic Fatty Liver Disease. Antioxidants (Basel) 2022; 11:antiox11050975. [PMID: 35624839 PMCID: PMC9137746 DOI: 10.3390/antiox11050975] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Revised: 04/18/2022] [Accepted: 05/05/2022] [Indexed: 01/10/2023] Open
Abstract
Non-alcoholic fatty liver disease is characterized by disturbed lipid metabolism and increased oxidative stress. These conditions lead to the activation of different cellular response mechanisms, including senescence. Cellular senescence constitutes an important response to injury in the liver. Recent findings show that chronic oxidative stress can induce senescence, and this might be a driving mechanism for NAFLD progression, aggravating the disturbance of lipid metabolism, organelle dysfunction, pro-inflammatory response and hepatocellular damage. In this context, the modulation of cellular senescence can be beneficial to ameliorate oxidative stress-related damage during NAFLD progression. This review focuses on the role of oxidative stress and senescence in the mechanisms leading to NAFLD and discusses the possibilities to modulate senescence as a therapeutic strategy in the treatment of NAFLD.
Collapse
Affiliation(s)
- Johanna Pedroza-Diaz
- University Medical Center Groningen, Department of Gastroenterology and Hepatology, University of Groningen, 9712 CP Groningen, The Netherlands; (J.P.-D.); (S.S.S.); (H.M.)
- Grupo de Investigación e Innovación Biomédica GI2B, Facultad de Ciencias Exactas y Aplicadas, Instituto Tecnológico Metropolitano, Medellín 050536, Colombia
| | - Johanna C. Arroyave-Ospina
- University Medical Center Groningen, Department of Gastroenterology and Hepatology, University of Groningen, 9712 CP Groningen, The Netherlands; (J.P.-D.); (S.S.S.); (H.M.)
- Correspondence:
| | - Sandra Serna Salas
- University Medical Center Groningen, Department of Gastroenterology and Hepatology, University of Groningen, 9712 CP Groningen, The Netherlands; (J.P.-D.); (S.S.S.); (H.M.)
| | - Han Moshage
- University Medical Center Groningen, Department of Gastroenterology and Hepatology, University of Groningen, 9712 CP Groningen, The Netherlands; (J.P.-D.); (S.S.S.); (H.M.)
| |
Collapse
|
5
|
The Potential Role of Cellular Senescence in Non-Alcoholic Fatty Liver Disease. Int J Mol Sci 2022; 23:ijms23020652. [PMID: 35054837 PMCID: PMC8775400 DOI: 10.3390/ijms23020652] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Revised: 12/29/2021] [Accepted: 01/02/2022] [Indexed: 02/07/2023] Open
Abstract
Non-alcoholic fatty liver disease (NAFLD) represents an increasing global health burden. Cellular senescence develops in response to cellular injury, leading not only to cell cycle arrest but also to alterations of the cellular phenotype and metabolic functions. In this review, we critically discuss the currently existing evidence for the involvement of cellular senescence in NAFLD in order to identify areas requiring further exploration. Hepatocyte senescence can be a central pathomechanism as it may foster intracellular fat accumulation, fibrosis and inflammation, also due to secretion of senescence-associated inflammatory mediators. However, in some non-parenchymal liver cell types, such as hepatic stellate cells, senescence may be beneficial by reducing the extracellular matrix deposition and thereby reducing fibrosis. Deciphering the detailed interaction between NAFLD and cellular senescence will be essential to discover novel therapeutic targets halting disease progression.
Collapse
|
6
|
Zhang C, Liu S, Yang M. Hepatocellular Carcinoma and Obesity, Type 2 Diabetes Mellitus, Cardiovascular Disease: Causing Factors, Molecular Links, and Treatment Options. Front Endocrinol (Lausanne) 2021; 12:808526. [PMID: 35002979 PMCID: PMC8733382 DOI: 10.3389/fendo.2021.808526] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Accepted: 12/07/2021] [Indexed: 12/13/2022] Open
Abstract
Hepatocellular carcinoma (HCC) is the most common type of primary liver cancer, which will affect more than a million people by the year 2025. However, current treatment options have limited benefits. Nonalcoholic fatty liver disease (NAFLD) is the fastest growing factor that causes HCC in western countries, including the United States. In addition, NAFLD co-morbidities including obesity, type 2 diabetes mellitus (T2DM), and cardiovascular diseases (CVDs) promote HCC development. Alteration of metabolites and inflammation in the tumor microenvironment plays a pivotal role in HCC progression. However, the underlying molecular mechanisms are still not totally clear. Herein, in this review, we explored the latest molecules that are involved in obesity, T2DM, and CVDs-mediated progression of HCC, as they share some common pathologic features. Meanwhile, several therapeutic options by targeting these key factors and molecules were discussed for HCC treatment. Overall, obesity, T2DM, and CVDs as chronic metabolic disease factors are tightly implicated in the development of HCC and its progression. Molecules and factors involved in these NAFLD comorbidities are potential therapeutic targets for HCC treatment.
Collapse
Affiliation(s)
- Chunye Zhang
- Department of Veterinary Pathobiology, University of Missouri, Columbia, MO, United States
| | - Shuai Liu
- The First Affiliated Hospital, Zhejiang University, Hangzhou, China
| | - Ming Yang
- Department of Surgery, University of Missouri, Columbia, MO, United States
- *Correspondence: Ming Yang,
| |
Collapse
|