1
|
Yuan S, Liu J, Yang L, Zhang X, Zhuang K, He S. Knockdown of circ_0044226 promotes endoplasmic reticulum stress-mediated autophagy and apoptosis in hepatic stellate cells via miR-4677-3p/SEC61G axis. J Bioenerg Biomembr 2024; 56:261-271. [PMID: 38421527 DOI: 10.1007/s10863-024-10007-0] [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: 11/22/2023] [Accepted: 02/09/2024] [Indexed: 03/02/2024]
Abstract
Downregulation of circ_0044226 has been demonstrated to reduce pulmonary fibrosis, but the role of circ_0044226 in liver fibrosis remains to be explored. In this work, we found that circ_0044226 expression was upregulated during liver fibrosis. Knockdown of circ_0044226 inhibited proliferation, promoted autophagy and apoptosis of hepatic stellate cell LX-2. Bioinformatic analysis and dual luciferase reporter assays confirmed the interaction between circ_0044226, miR-4677-3p and SEC61G. Mechanistically, knockdown of circ_0044226 suppressed SEC61G expression by releasing miR-4677-3p, thereby enhancing endoplasmic reticulum stress. Overexpression of SEC61G or endoplasmic reticulum stress inhibitor 4-phenylbutiric acid partially reversed the effect of knockdown circ_0044226 on LX-2 cell function. In vivo experiments showed that inhibition of circ_0044226 attenuated CCL4-induced liver fibrosis in mice. These imply that circ_0044226 may be a potential target for the treatment of liver fibrosis.
Collapse
Affiliation(s)
- Shanshan Yuan
- Department of Gastroenterology, The First Affiliated Hospital of Xi'an Jiaotong University, No.277, Yanta West Road, Yanta District, Xi'an, 710061, Shaanxi, China
- Department of Gastroenterology, Xi'an Central Hospital, Xi'an, 710004, Shaanxi, China
| | - Jiaming Liu
- Department of Gastroenterology, Xi'an Central Hospital, Xi'an, 710004, Shaanxi, China
| | - Li Yang
- Department of Ultrasonography, Xi'an Children's Hospital, The Affiliated Children's Hospital of Xi'an Jiaotong University, Xi'an, 710003, Shaanxi, China
| | - Xin Zhang
- Department of Gastroenterology, Xi'an Central Hospital, Xi'an, 710004, Shaanxi, China
| | - Kun Zhuang
- Department of Gastroenterology, Xi'an Central Hospital, Xi'an, 710004, Shaanxi, China
| | - Shuixiang He
- Department of Gastroenterology, The First Affiliated Hospital of Xi'an Jiaotong University, No.277, Yanta West Road, Yanta District, Xi'an, 710061, Shaanxi, China.
- Clinical Medical Research Center for Digestive Diseases of Shaanxi Province (Oncology), Xi'an, 710061, Shaanxi, China.
| |
Collapse
|
2
|
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.
Collapse
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
| |
Collapse
|
3
|
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.
Collapse
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.
| |
Collapse
|
4
|
Xie W, Chen M, Loor JJ, Song X, Ma N, Zhou S, Zhang H, Chang G, Shen X. AMPK-endoplasmic reticulum stress axis contributes to lipopolysaccharide-caused mitochondrial dysfunction by regulating mitochondria-associated membrane function in bovine hepatocytes. J Dairy Sci 2023:S0022-0302(23)00275-8. [PMID: 37225589 DOI: 10.3168/jds.2022-22879] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2022] [Accepted: 01/17/2023] [Indexed: 05/26/2023]
Abstract
Mitochondrial homeostasis is closely associated with cellular homeostasis process, whereas mitochondrial dysfunction contributes to apoptosis and mitophagy. Hence, analyzing the mechanism of lipopolysaccharide (LPS)-caused mitochondrial damage is necessary to understand how cellular homeostasis is maintained in bovine hepatocytes. Mitochondria-associated membranes (MAM), a connection between endoplasmic reticulum (ER) and mitochondria, is important to control mitochondrial function. To investigate the underlying mechanisms of the LPS-caused mitochondrial dysfunction, hepatocytes isolated from dairy cows at ∼160 d in milk (DIM) were pretreated with the specific inhibitors of adenosine 5'-monophosphate-activated protein kinase (AMPK), ER stress, RNA-activated protein kinase-like ER kinase (PERK), inositol-requiring enzyme 1α (IRE1α), c-Jun N-terminal kinase, and autophagy followed by a 12 μg/mL LPS treatment. The results showed that inhibiting ER stress with 4-phenylbutyric acid decreased the levels of autophagy and mitochondrial damage with AMPK inactivation in LPS-treated hepatocytes. The AMPK inhibitor compound C pretreatment alleviated LPS-induced ER stress, autophagy and mitochondrial dysfunction by regulating the expression of MAM-related genes, such as mitofusin 2 (MFN2), PERK, and IRE1α. Moreover, inhibiting PERK and IRE1α mitigated autophagy and mitochondrial dynamic disruption by regulating the MAM function. Additionally, blocking c-Jun N-terminal kinase, the downstream sensor of IRE1α, could reduce the levels of autophagy and apoptosis and restore the balance of mitochondrial fusion and fission by modulating the B cell leukemia 2 (BCL-2)/BCL-2 interacting protein 1 (BECLIN1) complex in the LPS-treated bovine hepatocytes. Furthermore, autophagy blockage with chloroquine could intervene in LPS-caused apoptosis to restore mitochondrial function. Collectively, these findings suggest that the AMPK-ER stress axis is involved in the LPS-caused mitochondrial dysfunction by mediating the MAM activity in bovine hepatocytes.
Collapse
Affiliation(s)
- Wan Xie
- Ministry of Education Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu 210095, P. R. China
| | - Mengru Chen
- Ministry of Education Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu 210095, P. R. China
| | - Juan J Loor
- Department of Animal Sciences and Division of Nutritional Sciences, University of Illinois, Urbana, IL 61801
| | - Xiaokun Song
- Ministry of Education Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu 210095, P. R. China
| | - Nana Ma
- Ministry of Education Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu 210095, P. R. China
| | - Shendong Zhou
- Ministry of Education Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu 210095, P. R. China
| | - Hongzhu Zhang
- Ministry of Education Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu 210095, P. R. China
| | - Guangjun Chang
- Ministry of Education Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu 210095, P. R. China
| | - Xiangzhen Shen
- Ministry of Education Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu 210095, P. R. China.
| |
Collapse
|
5
|
Manivasakam P, Ravi A, Ramesh J, Bhuvarahamurthy D, Kasirajan K, Vijayapoopathi S, Venugopal B, Fliri AF. Autophagy: An Emerging Target for Developing Effective Analgesics. ACS OMEGA 2023; 8:9445-9453. [PMID: 36936313 PMCID: PMC10018516 DOI: 10.1021/acsomega.2c06949] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Accepted: 02/20/2023] [Indexed: 06/18/2023]
Abstract
Inadequate treatment of acute and chronic pain causes depression, anxiety, sleep disturbances, and increased mortality. Abuse and overdose of opioids and the side effects associated with chronic use of NSAID illustrate the need for development of safer and effective pain medication. Working toward this end, an in silico tool based on an emergent intelligence analytical platform that examines interactions between protein networks was used to identify molecular mechanisms involved in regulating the body's response to painful stimuli and drug treatments. Examining interactions between protein networks associated with the expression of over 20 different pain types suggests that the regulation of autophagy plays a central role in modulation of pain symptoms (see Materials and Methods). Using the topology of this regulatory scheme as an in silico screening tool, we identified that combinations of functions targeted by cannabidiol, myo-inositol, and fish oils with varying ratios of eicosapentaenoic and docosahexaenoic acids are projected to produce superior analgesia. For validating this prediction, we administered combinations of cannabidiol, myo-inositol, and fish oils to rats that received formalin injections in hind paws, prior to substance administration, and showed that analgesic effects produced by these combinations were comparable or superior to known NSAID analgesics, which suggests that these combinations have potential in treatment of pain.
Collapse
Affiliation(s)
| | - Atchayaa Ravi
- Department
of Medical Biochemistry, Dr. A.L.M. Postgraduate
Institute of Basic Medical Sciences, University of Madras, Taramani, Chennai 600113, Tamil
Nadu, India
| | - Janani Ramesh
- Department
of Medical Biochemistry, Dr. A.L.M. Postgraduate
Institute of Basic Medical Sciences, University of Madras, Taramani, Chennai 600113, Tamil
Nadu, India
- Renal
Division, Brigham and Women’s Hospital,
BWH, Boston, Massachusetts 02115-6195, United
States
| | | | - Kalaiyarasi Kasirajan
- Department
of Medical Biochemistry, Dr. A.L.M. Postgraduate
Institute of Basic Medical Sciences, University of Madras, Taramani, Chennai 600113, Tamil
Nadu, India
| | - Singaravel Vijayapoopathi
- Department
of Medical Biochemistry, Dr. A.L.M. Postgraduate
Institute of Basic Medical Sciences, University of Madras, Taramani, Chennai 600113, Tamil
Nadu, India
| | - Bhuvarahamurthy Venugopal
- Department
of Medical Biochemistry, Dr. A.L.M. Postgraduate
Institute of Basic Medical Sciences, University of Madras, Taramani, Chennai 600113, Tamil
Nadu, India
| | | |
Collapse
|
6
|
An L, Wirth U, Koch D, Schirren M, Drefs M, Koliogiannis D, Niess H, Andrassy J, Guba M, Bazhin AV, Werner J, Kühn F. Metabolic Role of Autophagy in the Pathogenesis and Development of NAFLD. Metabolites 2023; 13:metabo13010101. [PMID: 36677026 PMCID: PMC9864958 DOI: 10.3390/metabo13010101] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Revised: 12/31/2022] [Accepted: 01/05/2023] [Indexed: 01/11/2023] Open
Abstract
Non-alcoholic fatty liver disease (NAFLD) is a spectrum of liver disease, ranging from simple steatosis to hepatitis, fibrosis, cirrhosis, and hepatocellular carcinoma (HCC). Liver fibrosis, which portends a poor prognosis in NAFLD, is characterized by the excessive accumulation of extracellular matrix (ECM) proteins resulting from abnormal wound repair response and metabolic disorders. Various metabolic factors play crucial roles in the progression of NAFLD, including abnormal lipid, bile acid, and endotoxin metabolism, leading to chronic inflammation and hepatic stellate cell (HSC) activation. Autophagy is a conserved process within cells that removes unnecessary or dysfunctional components through a lysosome-dependent regulated mechanism. Accumulating evidence has shown the importance of autophagy in NAFLD and its close relation to NAFLD progression. Thus, regulation of autophagy appears to be beneficial in treating NAFLD and could become an important therapeutic target.
Collapse
|
7
|
Hu XW, Li XM, Wang AM, Fu YM, Zhang FJ, Zeng F, Cao LP, Long H, Xiong YH, Xu J, Li J. Caffeine alleviates acute liver injury by inducing the expression of NEDD4L and deceasing GRP78 level via ubiquitination. Inflamm Res 2022; 71:1213-1227. [PMID: 35802146 DOI: 10.1007/s00011-022-01603-0] [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: 04/19/2022] [Accepted: 06/15/2022] [Indexed: 11/11/2022] Open
Abstract
BACKGROUND Acute liver injury is liver cell injury that occurs rapidly in a short period of time. Caffeine has been shown to maintain hepatoprotective effect with an unclear mechanism. Endoplasmic reticulum stress (ERS) has significant effects in acute liver injury. Induction of GRP78 is a hallmark of ERS. Whether or not caffeine's function is related to GRP78 remains to be explored. METHODS Acute liver injury model was established by LPS-treated L02 cells and in vivo administration of LPS/D-Gal in mice. Caffeine was pre-treated in L02 cells or mice. Gene levels was determined by real-time PCR and western blot. Cell viability was tested by CCK-8 assay and cell apoptosis was tested by flow cytometry. The interaction of GRP78 and NEDD4L was determined by Pull-down and co-immunoprecipitation (Co-IP) assay. The ubiquitination by NEDD4L on GRP78 was validated by in vitro ubiquitination assay. RESULTS Caffeine protected liver cells against acute injury induced cell apoptosis and ERS both in vitro and in vivo. Suppression of GRP78 could block the LPS-induced cell apoptosis and ERS. NEDD4L was found to interact with GRP78 and ubiquitinate its lysine of 324 site directly. Caffeine treatment induced the expression of NEDD4L, resulting in the ubiquitination and inhibition of GRP78. CONCLUSION Caffeine mitigated the acute liver injury by stimulating NEDD4L expression, which inhibited GRP78 expression via ubiquitination at its K324 site. Low dose of caffeine could be a promising therapeutic treatment for acute liver injury.
Collapse
Affiliation(s)
- Xing-Wang Hu
- Department of Emergency, Xiangya Hospital Central South University, Changsha, 410008, Hunan Province, People's Republic of China
| | - Xiang-Min Li
- Department of Infectious Diseases/Hunan Provincial Key Laboratory of Viral Hepatitis, Xiangya Hospital Central South University, Changsha, 410008, Hunan Province, People's Republic of China
| | - Ai-Min Wang
- Department of Infectious Diseases/Hunan Provincial Key Laboratory of Viral Hepatitis, Xiangya Hospital Central South University, Changsha, 410008, Hunan Province, People's Republic of China
| | - Yong-Ming Fu
- Scientific Research Center, The First Affiliated Hospital of Guangdong Pharmaceutical University, Guangzhou, 510080, Guangdong Province, People's Republic of China
| | - Fang-Jie Zhang
- Department of Infectious Diseases/Hunan Provincial Key Laboratory of Viral Hepatitis, Xiangya Hospital Central South University, Changsha, 410008, Hunan Province, People's Republic of China
| | - Feng Zeng
- Department of Infectious Diseases/Hunan Provincial Key Laboratory of Viral Hepatitis, Xiangya Hospital Central South University, Changsha, 410008, Hunan Province, People's Republic of China
| | - Li-Ping Cao
- Department of Infectious Diseases/Hunan Provincial Key Laboratory of Viral Hepatitis, Xiangya Hospital Central South University, Changsha, 410008, Hunan Province, People's Republic of China
| | - Hui Long
- Department of Infectious Diseases/Hunan Provincial Key Laboratory of Viral Hepatitis, Xiangya Hospital Central South University, Changsha, 410008, Hunan Province, People's Republic of China
| | - Ying-Hui Xiong
- Department of Emergency, Xiangya Hospital Central South University, Changsha, 410008, Hunan Province, People's Republic of China
| | - Ji Xu
- Department of Infectious Diseases/Hunan Provincial Key Laboratory of Viral Hepatitis, Xiangya Hospital Central South University, Changsha, 410008, Hunan Province, People's Republic of China
| | - Jia Li
- Department of Infectious Diseases/Hunan Provincial Key Laboratory of Viral Hepatitis, Xiangya Hospital Central South University, Changsha, 410008, Hunan Province, People's Republic of China.
| |
Collapse
|
8
|
Pavlović N, Heindryckx F. Targeting ER stress in the hepatic tumor microenvironment. FEBS J 2022; 289:7163-7176. [PMID: 34331743 DOI: 10.1111/febs.16145] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 07/13/2021] [Accepted: 07/30/2021] [Indexed: 01/13/2023]
Abstract
Hepatocellular carcinoma (HCC) is the most common type of primary liver cancer. It currently ranks as one of the most aggressive and deadly cancers worldwide, with an increasing mortality rate and limited treatment options. An important hallmark of liver pathologies, such as liver fibrosis and HCC, is the accumulation of misfolded and unfolded proteins in the lumen of the endoplasmic reticulum (ER), which induces ER stress and leads to the activation of the unfolded protein response (UPR). Upon accumulation of misfolded proteins, ER stress is sensed through three transmembrane proteins, IRE1α, PERK, and ATF6, which trigger the UPR to either alleviate ER stress or induce apoptosis. Increased expression of ER stress markers has been widely shown to correlate with fibrosis, inflammation, drug resistance, and overall HCC aggressiveness, as well as poor patient prognosis. While preclinical in vivo cancer models and in vitro approaches have shown promising results by pharmacologically targeting ER stress mediators, the major challenge of this therapeutic strategy lies in specifically and effectively targeting ER stress in HCC. Furthermore, both ER stress inducers and inhibitors have been shown to ameliorate HCC progression, adding to the complexity of targeting ER stress players as an anticancer strategy. More studies are needed to better understand the dual role and molecular background of ER stress in HCC, as well as its therapeutic potential for patients with liver cancer.
Collapse
Affiliation(s)
- Nataša Pavlović
- Department of Medical Cell Biology, Uppsala University, Sweden
| | | |
Collapse
|
9
|
Saimaiti A, Zhou DD, Li J, Xiong RG, Gan RY, Huang SY, Shang A, Zhao CN, Li HY, Li HB. Dietary sources, health benefits, and risks of caffeine. Crit Rev Food Sci Nutr 2022; 63:9648-9666. [PMID: 35574653 DOI: 10.1080/10408398.2022.2074362] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Dietary intake of caffeine has significantly increased in recent years, and beneficial and harmful effects of caffeine have been extensively studied. This paper reviews antioxidant and anti-inflammatory activities of caffeine as well as its protective effects on cardiovascular diseases, obesity, diabetes mellitus, cancers, and neurodegenerative and liver diseases. In addition, we summarize the side effects of long-term or excessive caffeine consumption on sleep, migraine, intraocular pressure, pregnant women, children, and adolescents. The health benefits of caffeine depend on the amount of caffeine intake and the physical condition of consumers. Moderate intake of caffeine helps to prevent and modulate several diseases. However, the long-term or over-consumption of caffeine can lead to addiction, insomnia, migraine, and other side effects. In addition, children, adolescents, pregnant women, and people who are sensitive to caffeine should be recommended to restrict/reduce their intake to avoid potential adverse effects.
Collapse
Affiliation(s)
- Adila Saimaiti
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition, School of Public Health, Sun Yat-Sen University, Guangzhou, China
| | - Dan-Dan Zhou
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition, School of Public Health, Sun Yat-Sen University, Guangzhou, China
| | - Jiahui Li
- School of Science, The Hong Kong University of Science and Technology, Hong Kong, China
| | - Ruo-Gu Xiong
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition, School of Public Health, Sun Yat-Sen University, Guangzhou, China
| | - Ren-You Gan
- Research Center for Plants and Human Health, Institute of Urban Agriculture, Chinese Academy of Agricultural Sciences, National Agricultural Science & Technology Center, Chengdu, China
- Key Laboratory of Coarse Cereal Processing (Ministry of Agriculture and Rural Affairs), Sichuan Engineering & Technology Research Center of Coarse Cereal Industralization, School of Food and Biological Engineering, Chengdu University, Chengdu, China
| | - Si-Yu Huang
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition, School of Public Health, Sun Yat-Sen University, Guangzhou, China
| | - Ao Shang
- School of Chinese Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Cai-Ning Zhao
- Department of Clinical Oncology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Hang-Yu Li
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition, School of Public Health, Sun Yat-Sen University, Guangzhou, China
| | - Hua-Bin Li
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition, School of Public Health, Sun Yat-Sen University, Guangzhou, China
| |
Collapse
|
10
|
Lucantoni F, Benedicto AM, Gruevska A, Moragrega ÁB, Fuster-Martínez I, Esplugues JV, Blas-García A, Apostolova N. Implication of autophagy in the antifibrogenic effect of Rilpivirine: when more is less. Cell Death Dis 2022; 13:385. [PMID: 35443746 PMCID: PMC9021290 DOI: 10.1038/s41419-022-04789-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2021] [Revised: 01/11/2022] [Accepted: 02/11/2022] [Indexed: 01/18/2023]
Abstract
As the main extracellular matrix-producing cells, activated hepatic stellate cells (HSC) are fundamental mediators of liver fibrosis (LF), and understanding their activation/inactivation mechanisms is paramount to the search for novel therapeutics. The antiretroviral drug Rilpivirine (RPV) has demonstrated a hepatoprotective effect in several animal models of chronic liver injury that is related to its antifibrogenic and apoptotic action in HSC. In the present study, we evaluated whether autophagy is implicated in the hepatoprotective action of RPV, as autophagy plays an important role in HSC transdifferentiation. We employed two standard mouse models of chronic liver injury - fatty liver disease and carbon tetrachloride (CCl4)-induced hepatotoxicity -and cultured HSC activated with the profibrotic cytokine TGF-β. RPV enhanced autophagy in the whole liver of both mouse models and in activated HSC, evident in the protein expression of autophagy markers, increased autophagosome content and lysosomal mass. Moreover, increased autophagic flux was observed in RPV-exposed HSC as revealed by tandem fluorescence-tagged LC3 and p62 and analysis of LC3-II accumulation in cells exposed to the lysosomal inhibitor chloroquine. Importantly, autophagy was involved in the cytotoxic effect of RPV on HSC, though in a differential manner. Pharmacological inhibition of autophagy by 3-methyladenine (3-MA) did not affect the diminishing effect of RPV on viability, while treatment with wortmannin or depletion of specific autophagy proteins (ATG5, Beclin-1 and SQSTM1/p62) rescued the detrimental effect of high concentrations of RPV on the viability of activated HSC. Finally, we also provide evidence that RPV compromises the viability of TGF-β-induced HSC independently of its antifibrogenic effect, observed as reduced collagen 1A1 synthesis, and that this effect does not include RPV´s modulation of autophagy. In summary, as a contributor to the mechanisms involved in the hepatoprotective action of RPV, autophagy may be a good candidate to explore when developing novel therapeutics for LF.
Collapse
|
11
|
Kinaneh S, Hijaze W, Mansour-Wattad L, Hammoud R, Zaidani H, Kabala A, Hamoud S. Heparanase Inhibition Prevents Liver Steatosis in E 0 Mice. J Clin Med 2022; 11:jcm11061672. [PMID: 35329997 PMCID: PMC8954723 DOI: 10.3390/jcm11061672] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Revised: 03/10/2022] [Accepted: 03/15/2022] [Indexed: 12/22/2022] Open
Abstract
Background: Non-alcoholic fatty liver disease affects up to 30% of adults in the USA, and is associated with a higher incidence of chronic liver morbidity and mortality. Several molecular pathways are involved in the pathology of liver steatosis, including lipid uptake, lipogenesis, lipolysis, and beta-oxidation. The enzyme heparanase has been implicated in liver steatosis. Herein, we investigated the effect of heparanase inhibition on liver steatosis in E0 mice. Methods: In vivo experiments: Male wild-type mice fed with either chow diet (n = 4) or high-fat diet (n = 6), and male E0 mice fed with chow diet (n = 8) or high-fat diet (n = 33) were included. Mice on a high-fat diet were treated for 12 weeks with PG545 at low dose (6.4 mg/kg/week, ip, n = 6) or high dose (13.3 mg/kg/week, ip, n = 7), SST0001 (1.2 mg/mouse/day, ip, n = 6), or normal saline (control, n = 14). Animals were sacrificed two days after inducing peritonitis. Serum was analyzed for biochemical parameters. Mouse peritoneal macrophages (MPMs) were harvested and analyzed for lipid content. Livers were harvested for histopathological analysis of steatosis, lipid content, and the expression of steatosis-related factors at the mRNA level. In vitro experiments: MPMs were isolated from untreated E0 mice aged 8–10 weeks and were cultured and treated with either PG545 or SST0001, both at 50 µg/mL for 24 h, followed by assessment of mRNA expression of steatosis related factors. Results: Heparanase inhibition significantly attenuated the development of liver steatosis, as was evident by liver histology and lipid content. Serum analysis indicated lowering of cholesterol and triglycerides levels in mice treated with heparanase inhibitors. In liver tissue, assessment of mRNA expression of key factors in lipid uptake, lipolysis, lipogenesis, and beta-oxidation exhibited significant downregulation following PG545 treatment and to a lesser extent when SST0001 was applied. However, in vitro treatment of MPMs with PG545, but not SST0001, resulted in increased lipid content in these cells, which is opposed to their effect on MPMs of treated mice. This may indicate distinct regulatory pathways in the system or isolated macrophages following heparanase inhibition. Conclusion: Heparanase inhibition significantly attenuates the development of liver steatosis by decreasing tissue lipid content and by affecting the mRNA expression of key lipid metabolism regulators.
Collapse
Affiliation(s)
- Safa Kinaneh
- Department of Physiology, Rappaport Faculty of Medicine, Technion—Israel Institute of Technology, Haifa 3200003, Israel; (S.K.); (A.K.)
| | - Walaa Hijaze
- Department of Emergency Medicine, Rambam Health Care Campus, Haifa 3109601, Israel; (W.H.); (H.Z.)
| | - Lana Mansour-Wattad
- Department of Internal Medicine E, Rambam Health Care Campus, Haifa 3109601, Israel;
| | - Rawan Hammoud
- Faculty of Biotechnology, Hadassah Academic College, Jerusalem 9101001, Israel;
| | - Hisam Zaidani
- Department of Emergency Medicine, Rambam Health Care Campus, Haifa 3109601, Israel; (W.H.); (H.Z.)
| | - Aviva Kabala
- Department of Physiology, Rappaport Faculty of Medicine, Technion—Israel Institute of Technology, Haifa 3200003, Israel; (S.K.); (A.K.)
| | - Shadi Hamoud
- Department of Internal Medicine E, Rambam Health Care Campus, Haifa 3109601, Israel;
- Lipid Research Laboratory, Rappaport Faculty of Medicine, Technion—Israel Institute of Technology, Haifa 3200003, Israel
- Correspondence: ; Tel.: +972-4-7772300; Fax: +972-4-7771691
| |
Collapse
|
12
|
Zhang Z, Qiao D, Zhang Y, Chen Q, Chen Y, Tang Y, Que R, Chen Y, Zheng L, Dai Y, Tang Z. Portulaca Oleracea L. Extract Ameliorates Intestinal Inflammation by Regulating Endoplasmic Reticulum Stress and Autophagy. Mol Nutr Food Res 2021; 66:e2100791. [PMID: 34968000 PMCID: PMC9286603 DOI: 10.1002/mnfr.202100791] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Revised: 10/06/2021] [Indexed: 11/14/2022]
Abstract
Scope To investigate the role of endoplasmic reticulum stress (ERS)‐induced autophagy in inflammatory bowel disease (IBD) and the intervention mechanism of Portulaca oleracea L. (POL) extract, a medicinal herb with anti‐inflammatory, antioxidant, immune‐regulating, and antitumor properties, in vitro and in vivo. Methods and Results An IL‐10‐deficient mouse model is used for in vivo experiments; a thapsigargin (Tg)‐stimulated ERS model of human colonic mucosal epithelial cells (HIECs) is used for in vitro experiments. The levels of ERS‐autophagy‐related proteins are examined by immunofluorescence and Western blot. Cellular ultrastructure is assessed with transmission electron microscopy. POL extract promotes a healing effect on colitis by regulating ERS‐autophagy through the protein kinase R‐like endoplasmic reticulum kinase (PERK)‐eukaryotic initiation factor 2α (eIF2α)/Beclin1‐microtubule‐associated protein light chain 3II (LC3II) pathway. Conclusion Overall, the results of this study further confirm the anti‐inflammatory mechanism and protective effect of POL extract and provide a new research avenue for the clinical treatment of IBD.
Collapse
Affiliation(s)
- Ziwei Zhang
- Institute of Digestive Diseases, LongHua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, 200032, China
| | - Dan Qiao
- Department of Gastroenterology, Shanghai Traditional Chinese Medicine-Integrated Hospital, Shanghai University of Traditional Chinese Medicine 200082, Shanghai, China
| | - Yali Zhang
- Institute of Digestive Diseases, LongHua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, 200032, China
| | - Qian Chen
- Institute of Digestive Diseases, LongHua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, 200032, China
| | - Yujun Chen
- Institute of Digestive Diseases, LongHua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, 200032, China
| | - Yingjue Tang
- Institute of Digestive Diseases, LongHua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, 200032, China
| | - Renye Que
- Department of Gastroenterology, Shanghai Traditional Chinese Medicine-Integrated Hospital, Shanghai University of Traditional Chinese Medicine 200082, Shanghai, China
| | - Ying Chen
- Department of Gastroenterology, Shanghai Traditional Chinese Medicine-Integrated Hospital, Shanghai University of Traditional Chinese Medicine 200082, Shanghai, China
| | - Lie Zheng
- Department of Gastroenterology, Traditional Chinese Medicine Hospital of Shaanxi Province, Xi'an, 730000, China
| | - Yancheng Dai
- Department of Gastroenterology, Shanghai Traditional Chinese Medicine-Integrated Hospital, Shanghai University of Traditional Chinese Medicine 200082, Shanghai, China
| | - Zhipeng Tang
- Institute of Digestive Diseases, LongHua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, 200032, China
| |
Collapse
|
13
|
Tang X, Sun Y, Xu C, Guo X, Sun J, Pan C, Sun J. Caffeine Induces Autophagy and Apoptosis in Auditory Hair Cells via the SGK1/HIF-1α Pathway. Front Cell Dev Biol 2021; 9:751012. [PMID: 34869338 PMCID: PMC8637128 DOI: 10.3389/fcell.2021.751012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2021] [Accepted: 10/28/2021] [Indexed: 12/27/2022] Open
Abstract
Caffeine is being increasingly used in daily life, such as in drinks, cosmetics, and medicine. Caffeine is known as a mild stimulant of the central nervous system, which is also closely related to neurologic disease. However, it is unknown whether caffeine causes hearing loss, and there is great interest in determining the effect of caffeine in cochlear hair cells. First, we explored the difference in auditory brainstem response (ABR), organ of Corti, stria vascularis, and spiral ganglion neurons between the control and caffeine-treated groups of C57BL/6 mice. RNA sequencing was conducted to profile mRNA expression differences in the cochlea of control and caffeine-treated mice. A CCK-8 assay was used to evaluate the approximate concentration of caffeine. Flow cytometry, TUNEL assay, immunocytochemistry, qRT-PCR, and Western blotting were performed to detect the effects of SGK1 in HEI-OC1 cells and basilar membranes. In vivo research showed that 120 mg/ kg caffeine injection caused hearing loss by damaging the organ of Corti, stria vascularis, and spiral ganglion neurons. RNA-seq results suggested that SGK1 might play a vital role in ototoxicity. To confirm our observations in vitro, we used the HEI-OC1 cell line, a cochlear hair cell-like cell line, to investigate the role of caffeine in hearing loss. The results of flow cytometry, TUNEL assay, immunocytochemistry, qRT-PCR, and Western blotting showed that caffeine caused autophagy and apoptosis via SGK1 pathway. We verified the interaction between SGK1 and HIF-1α by co-IP. To confirm the role of SGK1 and HIF-1α, GSK650394 was used as an inhibitor of SGK1 and CoCl2 was used as an inducer of HIF-1α. Western blot analysis suggested that GSK650394 and CoCl2 relieved the caffeine-induced apoptosis and autophagy. Together, these results indicated that caffeine induces autophagy and apoptosis in auditory hair cells via the SGK1/HIF-1α pathway, suggesting that caffeine may cause hearing loss. Additionally, our findings provided new insights into ototoxic drugs, demonstrating that SGK1 and its downstream pathways may be potential therapeutic targets for hearing research at the molecular level.
Collapse
Affiliation(s)
- Xiaomin Tang
- Departments of Otolaryngology-Head and Neck Surgery, The First Affiliated Hospital of University of Science and Technique of China, Hefei, China
| | - Yuxuan Sun
- Departments of Otolaryngology-Head and Neck Surgery, The First Affiliated Hospital of University of Science and Technique of China, Hefei, China
| | - Chenyu Xu
- Departments of Otolaryngology-Head and Neck Surgery, The First Affiliated Hospital of University of Science and Technique of China, Hefei, China
| | - Xiaotao Guo
- Departments of Otolaryngology-Head and Neck Surgery, The First Affiliated Hospital of University of Science and Technique of China, Hefei, China
| | - Jiaqiang Sun
- Departments of Otolaryngology-Head and Neck Surgery, The First Affiliated Hospital of University of Science and Technique of China, Hefei, China
| | - Chunchen Pan
- Departments of Otolaryngology-Head and Neck Surgery, The First Affiliated Hospital of University of Science and Technique of China, Hefei, China
| | - Jingwu Sun
- Departments of Otolaryngology-Head and Neck Surgery, The First Affiliated Hospital of University of Science and Technique of China, Hefei, China
| |
Collapse
|
14
|
Lu MC, Lee IT, Hong LZ, Ben-Arie E, Lin YH, Lin WT, Kao PY, Yang MD, Chan YC. Coffeeberry Activates the CaMKII/CREB/BDNF Pathway, Normalizes Autophagy and Apoptosis Signaling in Nonalcoholic Fatty Liver Rodent Model. Nutrients 2021; 13:nu13103652. [PMID: 34684653 PMCID: PMC8541094 DOI: 10.3390/nu13103652] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Revised: 10/12/2021] [Accepted: 10/13/2021] [Indexed: 12/02/2022] Open
Abstract
Nonalcoholic fatty liver disease (NAFLD) shows extensive liver cell destruction with lipid accumulation, which is frequently accompanied by metabolic comorbidities and increases mortality. This study aimed to investigate the effects of coffeeberry (CB) on regulating the redox status, the CaMKII/CREB/BDNF pathway, autophagy, and apoptosis signaling by a NAFLD rodent model senescence-accelerated mice prone 8 (SAMP8). Three-month-old male SAMP8 mice were divided into a control group and three CB groups (50, 100, and 200 mg/kg BW), and fed for 12 weeks. The results show that CB reduced hepatic malondialdehyde and carbonyl protein levels. CB significantly enhanced Ca2+/calmodulin-dependent protein kinase II (CaMKII) and brain-derived neurotrophic factor (BDNF) and reduced the phospho-cAMP response element-binding protein (p-CREB)/CREB ratio. In addition, CB increased the silent information regulator T1 level, promoted Beclin 1 and microtubule-associated protein light chain 3 II expressions, and reduced phosphorylated mammalian target of rapamycin and its downstream p-p70s6k levels. CB also inhibited the expressions of apoptosis-related factors poly (ADP-ribose) polymerase-1 and the apoptosis-inducing factor. In conclusion, CB might protect the liver by reducing oxidative stress, activating the CaMKII/CREB/BDNF pathway, and improving autophagic and apoptotic expressions in a dose-dependent manner.
Collapse
Affiliation(s)
- Meng-Chun Lu
- Department of Clinical Nutrition, China Medical University Hospital, Taichung 406040, Taiwan;
- Department of Nutrition, China Medical University, Taichung 406040, Taiwan
- Department of Food and Nutrition, Providence University, Taichung 43301, Taiwan; (Y.-H.L.); (W.-T.L.)
| | - I-Te Lee
- Division of Endocrinology and Metabolism, Taichung Veterans General Hospital, Taichung 40705, Taiwan;
| | - Ling-Zong Hong
- Department of Medical Research, Taichung Veterans General Hospital, Taichung 40705, Taiwan;
| | - Eyal Ben-Arie
- Graduate Institute of Acupuncture Science, Collage of Chinese Medicine, China Medical University, Taichung 406040, Taiwan;
| | - Yu-Hsuan Lin
- Department of Food and Nutrition, Providence University, Taichung 43301, Taiwan; (Y.-H.L.); (W.-T.L.)
| | - Wei-Ting Lin
- Department of Food and Nutrition, Providence University, Taichung 43301, Taiwan; (Y.-H.L.); (W.-T.L.)
| | - Pei-Yu Kao
- Division of Thoracic Surgery, Department of Surgery, China Medical University Hospital, Taichung 406040, Taiwan;
| | - Mei-Due Yang
- Division of General Surgery, Department of Surgery, China Medical University Hospital, Taichung 406040, Taiwan;
| | - Yin-Ching Chan
- Department of Food and Nutrition, Providence University, Taichung 43301, Taiwan; (Y.-H.L.); (W.-T.L.)
- Correspondence:
| |
Collapse
|
15
|
Rodak K, Kokot I, Kratz EM. Caffeine as a Factor Influencing the Functioning of the Human Body-Friend or Foe? Nutrients 2021; 13:3088. [PMID: 34578966 PMCID: PMC8467199 DOI: 10.3390/nu13093088] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Revised: 08/27/2021] [Accepted: 08/31/2021] [Indexed: 02/08/2023] Open
Abstract
Nowadays, caffeine is one of the most commonly consumed substances, which presents in many plants and products. It has both positive and negative effects on the human body, and its activity concerns a variety of systems including the central nervous system, immune system, digestive system, respiratory system, urinary tract, etc. These effects are dependent on quantity, the type of product in which caffeine is contained, and also on the individual differences among people (sex, age, diet etc.). The main aim of this review was to collect, present, and analyze the available information including the latest discoveries on the impact of caffeine on human health and the functioning of human body systems, taking into account the role of caffeine in individual disease entities. We present both the positive and negative sides of caffeine consumption and the healing properties of this purine alkaloid in diseases such as asthma, Parkinson's disease, and others, not forgetting about the negative effects of excess caffeine (e.g., in people with hypertension, children, adolescents, and the elderly). In summary, we can conclude, however, that caffeine has a multi-directional influence on various organs of the human body, and because of its anti-oxidative properties, it was, and still is, an interesting topic for research studies including those aimed at developing new therapeutic strategies.
Collapse
Affiliation(s)
- Kamil Rodak
- Student Research Club, “Biomarkers in Medical Diagnostics”, Department of Laboratory Diagnostics, Division of Laboratory Diagnostics, Faculty of Pharmacy, Wroclaw Medical University, Borowska Street 211A, 50-556 Wroclaw, Poland
| | - Izabela Kokot
- Department of Laboratory Diagnostics, Division of Laboratory Diagnostics, Faculty of Pharmacy, Wroclaw Medical University, Borowska Street 211A, 50-556 Wroclaw, Poland;
| | - Ewa Maria Kratz
- Department of Laboratory Diagnostics, Division of Laboratory Diagnostics, Faculty of Pharmacy, Wroclaw Medical University, Borowska Street 211A, 50-556 Wroclaw, Poland;
| |
Collapse
|
16
|
Kanlaya R, Subkod C, Nanthawuttiphan S, Thongboonkerd V. Caffeine prevents oxalate-induced epithelial-mesenchymal transition of renal tubular cells by its anti-oxidative property through activation of Nrf2 signaling and suppression of Snail1 transcription factor. Biomed Pharmacother 2021; 141:111870. [PMID: 34246192 DOI: 10.1016/j.biopha.2021.111870] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Revised: 06/12/2021] [Accepted: 06/28/2021] [Indexed: 01/14/2023] Open
Abstract
Caffeine is an active ingredient found in coffee and energy beverages. Its hepatoprotective effects against liver fibrosis are well-documented. Nonetheless, its renoprotective effects against renal fibrogenesis and epithelial-mesenchymal transition (EMT) processes remain unclear and under-investigated. In this study, the protective effects of caffeine against oxalate-induced EMT in renal tubular cells were evaluated by various assays to measure expression levels of epithelial and mesenchymal markers, cell migrating activity, level of oxidized proteins, and expression of Nrf2 and Snail1. Oxalate at sublethal dose significantly suppressed cell proliferation but increased cell elongation, spindle index and migration. Oxalate also decreased expression of epithelial markers (zonula occludens-1 (ZO-1) and E-cadherin) but increased expression of mesenchymal markers (fibronectin, vimentin and α-smooth muscle actin (α-SMA)). All of these EMT-inducing effects of oxalate could be prevented by pretreatment with caffeine. While oxalate increased oxidized proteins and Snail1 levels, it decreased Nrf2 expression. Caffeine could preserve all these molecules to their basal (control) levels. Finally, silencing of Nrf2 expression by small interfering RNA (siRNA) could abolish such protective effects of caffeine on oxalate-induced EMT. Our data indicate that the renoprotective effects of caffeine against oxalate-induced EMT is mediated, at least in part, by its anti-oxidative property through activation of Nrf2 signaling and suppression of Snail1 transcription factor.
Collapse
Affiliation(s)
- Rattiyaporn Kanlaya
- Medical Proteomics Unit, Office for Research and Development, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Chonnicha Subkod
- Medical Proteomics Unit, Office for Research and Development, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Supanan Nanthawuttiphan
- Medical Proteomics Unit, Office for Research and Development, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Visith Thongboonkerd
- Medical Proteomics Unit, Office for Research and Development, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand.
| |
Collapse
|
17
|
Lucantoni F, Martínez-Cerezuela A, Gruevska A, Moragrega ÁB, Víctor VM, Esplugues JV, Blas-García A, Apostolova N. Understanding the implication of autophagy in the activation of hepatic stellate cells in liver fibrosis: are we there yet? J Pathol 2021; 254:216-228. [PMID: 33834482 DOI: 10.1002/path.5678] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Revised: 03/29/2021] [Accepted: 04/07/2021] [Indexed: 01/18/2023]
Abstract
Liver fibrosis (LF) occurs as a result of persistent liver injury and can be defined as a pathologic, chronic, wound-healing process in which functional parenchyma is progressively replaced by fibrotic tissue. As a phenomenon involved in the majority of chronic liver diseases, and therefore prevalent, it exerts a significant impact on public health. This impact becomes even more patent given the lack of a specific pharmacological therapy, with LF only being ameliorated or prevented through the use of agents that alleviate the underlying causes. Hepatic stellate cells (HSCs) are fundamental mediators of LF, which, activated in response to pro-fibrotic stimuli, transdifferentiate from a quiescent phenotype into myofibroblasts that deposit large amounts of fibrotic tissue and mediate pro-inflammatory effects. In recent years, much effort has been devoted to understanding the mechanisms through which HSCs are activated or inactivated. Using cell culture and/or different animal models, numerous studies have shown that autophagy is enhanced during the fibrogenic process and have provided specific evidence to pinpoint the fundamental role of autophagy in HSC activation. This effect involves - though may not be limited to - the autophagic degradation of lipid droplets. Several hepatoprotective agents have been shown to reverse the autophagic alteration present in LF, but clinical confirmation of these effects is pending. On the other hand, there is evidence that implicates autophagy in several anti-fibrotic mechanisms in HSCs that stimulate HSC cell cycle arrest and cell death or prevent the generation of pro-fibrotic mediators, including excess collagen accumulation. The objective of this review is to offer a comprehensive analysis of published evidence of the role of autophagy in HSC activation and to provide hints for possible therapeutic targets for the treatment and/or prevention of LF related to autophagy. © 2021 The Authors. The Journal of Pathology published by John Wiley & Sons, Ltd. on behalf of The Pathological Society of Great Britain and Ireland.
Collapse
Affiliation(s)
- Federico Lucantoni
- Departamento de Farmacología, Facultad de Medicina, Universidad de Valencia, Valencia, Spain
- FISABIO - Hospital Universitario Doctor Peset, Valencia, Spain
| | | | - Aleksandra Gruevska
- Departamento de Farmacología, Facultad de Medicina, Universidad de Valencia, Valencia, Spain
- FISABIO - Hospital Universitario Doctor Peset, Valencia, Spain
| | - Ángela B Moragrega
- Departamento de Farmacología, Facultad de Medicina, Universidad de Valencia, Valencia, Spain
- FISABIO - Hospital Universitario Doctor Peset, Valencia, Spain
| | - Víctor M Víctor
- FISABIO - Hospital Universitario Doctor Peset, Valencia, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Valencia, Spain
- Departamento de Fisiología, Facultad de Medicina, Universidad de Valencia, Valencia, Spain
| | - Juan V Esplugues
- Departamento de Farmacología, Facultad de Medicina, Universidad de Valencia, Valencia, Spain
- FISABIO - Hospital Universitario Doctor Peset, Valencia, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Valencia, Spain
| | - Ana Blas-García
- FISABIO - Hospital Universitario Doctor Peset, Valencia, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Valencia, Spain
- Departamento de Fisiología, Facultad de Medicina, Universidad de Valencia, Valencia, Spain
| | - Nadezda Apostolova
- Departamento de Farmacología, Facultad de Medicina, Universidad de Valencia, Valencia, Spain
- FISABIO - Hospital Universitario Doctor Peset, Valencia, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Valencia, Spain
| |
Collapse
|
18
|
Lin YS, Weibel J, Landolt HP, Santini F, Meyer M, Brunmair J, Meier-Menches SM, Gerner C, Borgwardt S, Cajochen C, Reichert C. Daily Caffeine Intake Induces Concentration-Dependent Medial Temporal Plasticity in Humans: A Multimodal Double-Blind Randomized Controlled Trial. Cereb Cortex 2021; 31:3096-3106. [PMID: 33585896 DOI: 10.1093/cercor/bhab005] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Revised: 12/25/2020] [Accepted: 12/27/2020] [Indexed: 12/18/2022] Open
Abstract
Caffeine is commonly used to combat high sleep pressure on a daily basis. However, interference with sleep-wake regulation could disturb neural homeostasis and insufficient sleep could lead to alterations in human gray matter. Hence, in this double-blind, randomized, cross-over study, we examined the impact of 10-day caffeine (3 × 150 mg/day) on human gray matter volumes (GMVs) and cerebral blood flow (CBF) by fMRI MP-RAGE and arterial spin-labeling sequences in 20 habitual caffeine consumers, compared with 10-day placebo (3 × 150 mg/day). Sleep pressure was quantified by electroencephalographic slow-wave activity (SWA) in the previous nighttime sleep. Nonparametric voxel-based analyses revealed a significant reduction in GMV in the medial temporal lobe (mTL) after 10 days of caffeine intake compared with 10 days of placebo, voxel-wisely adjusted for CBF considering the decreased perfusion after caffeine intake compared with placebo. Larger GMV reductions were associated with higher individual concentrations of caffeine and paraxanthine. Sleep SWA was, however, neither different between conditions nor associated with caffeine-induced GMV reductions. Therefore, the data do not suggest a link between sleep depth during daily caffeine intake and changes in brain morphology. In conclusion, daily caffeine intake might induce neural plasticity in the mTL depending on individual metabolic processes.
Collapse
Affiliation(s)
- Yu-Shiuan Lin
- Centre for Chronobiology, University Psychiatric Clinics, University of Basel, 4002 Basel, Switzerland.,Transfaculty Research Platform, Molecular and Cognitive Neurosciences, University of Basel, 4055 Basel, Switzerland.,Neuropsychiatry and Brain Imaging, University Psychiatric Clinics, University of Basel, 4002 Basel, Switzerland
| | - Janine Weibel
- Centre for Chronobiology, University Psychiatric Clinics, University of Basel, 4002 Basel, Switzerland.,Transfaculty Research Platform, Molecular and Cognitive Neurosciences, University of Basel, 4055 Basel, Switzerland
| | - Hans-Peter Landolt
- Institute of Pharmacology and Toxicology, University of Zurich, 8057 Zurich, Switzerland.,Sleep & Health Zurich, University Center of Competence, University of Zurich, 8091 Zurich, Switzerland
| | - Francesco Santini
- Department of Radiology, Division of Radiological Physics, University Hospital Basel, 4031 Basel, Switzerland.,Department of Biomedical Engineering, University of Basel, 4123 Allschwil, Switzerland
| | - Martin Meyer
- Centre for Chronobiology, University Psychiatric Clinics, University of Basel, 4002 Basel, Switzerland.,Transfaculty Research Platform, Molecular and Cognitive Neurosciences, University of Basel, 4055 Basel, Switzerland.,Clinical Sleep Laboratory, University Psychiatric Clinics, University of Basel, 4002 Basel, Switzerland
| | - Julia Brunmair
- Department of Analytical Chemistry, University of Vienna, 1090 Vienna A, Austria
| | | | - Christopher Gerner
- Department of Analytical Chemistry, University of Vienna, 1090 Vienna A, Austria.,Joint Metabolome Facility, University of Vienna and Medical University of Vienna, 1090 Vienna A, Austria
| | - Stefan Borgwardt
- Neuropsychiatry and Brain Imaging, University Psychiatric Clinics, University of Basel, 4002 Basel, Switzerland
| | - Christian Cajochen
- Centre for Chronobiology, University Psychiatric Clinics, University of Basel, 4002 Basel, Switzerland.,Transfaculty Research Platform, Molecular and Cognitive Neurosciences, University of Basel, 4055 Basel, Switzerland
| | - Carolin Reichert
- Centre for Chronobiology, University Psychiatric Clinics, University of Basel, 4002 Basel, Switzerland.,Transfaculty Research Platform, Molecular and Cognitive Neurosciences, University of Basel, 4055 Basel, Switzerland
| |
Collapse
|
19
|
Ren X, Chen JF. Caffeine and Parkinson's Disease: Multiple Benefits and Emerging Mechanisms. Front Neurosci 2020; 14:602697. [PMID: 33390888 PMCID: PMC7773776 DOI: 10.3389/fnins.2020.602697] [Citation(s) in RCA: 70] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Accepted: 11/25/2020] [Indexed: 12/14/2022] Open
Abstract
Parkinson’s disease (PD) is the second most common neurodegenerative disorder, characterized by dopaminergic neurodegeneration, motor impairment and non-motor symptoms. Epidemiological and experimental investigations into potential risk factors have firmly established that dietary factor caffeine, the most-widely consumed psychoactive substance, may exerts not only neuroprotective but a motor and non-motor (cognitive) benefits in PD. These multi-benefits of caffeine in PD are supported by convergence of epidemiological and animal evidence. At least six large prospective epidemiological studies have firmly established a relationship between increased caffeine consumption and decreased risk of developing PD. In addition, animal studies have also demonstrated that caffeine confers neuroprotection against dopaminergic neurodegeneration using PD models of mitochondrial toxins (MPTP, 6-OHDA, and rotenone) and expression of α-synuclein (α-Syn). While caffeine has complex pharmacological profiles, studies with genetic knockout mice have clearly revealed that caffeine’s action is largely mediated by the brain adenosine A2A receptor (A2AR) and confer neuroprotection by modulating neuroinflammation and excitotoxicity and mitochondrial function. Interestingly, recent studies have highlighted emerging new mechanisms including caffeine modulation of α-Syn degradation with enhanced autophagy and caffeine modulation of gut microbiota and gut-brain axis in PD models. Importantly, since the first clinical trial in 2003, United States FDA has finally approved clinical use of the A2AR antagonist istradefylline for the treatment of PD with OFF-time in Sept. 2019. To realize therapeutic potential of caffeine in PD, genetic study of caffeine and risk genes in human population may identify useful pharmacogenetic markers for predicting individual responses to caffeine in PD clinical trials and thus offer a unique opportunity for “personalized medicine” in PD.
Collapse
Affiliation(s)
- Xiangpeng Ren
- Molecular Neuropharmacology Lab, School of Optometry and Ophthalmology, Wenzhou Medical University, Wenzhou, China.,State Key Laboratory of Ophthalmology, Optometry and Visual Science, Wenzhou, China.,Department of Biochemistry, Medical College, Jiaxing University, Jiaxing, China
| | - Jiang-Fan Chen
- Molecular Neuropharmacology Lab, School of Optometry and Ophthalmology, Wenzhou Medical University, Wenzhou, China.,State Key Laboratory of Ophthalmology, Optometry and Visual Science, Wenzhou, China
| |
Collapse
|
20
|
Simvastatin Induces Unfolded Protein Response and Enhances Temozolomide-Induced Cell Death in Glioblastoma Cells. Cells 2020; 9:cells9112339. [PMID: 33105603 PMCID: PMC7690447 DOI: 10.3390/cells9112339] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Revised: 10/14/2020] [Accepted: 10/19/2020] [Indexed: 02/06/2023] Open
Abstract
Glioblastoma (GBM) is the most prevalent malignant primary brain tumor with a very poor survival rate. Temozolomide (TMZ) is the common chemotherapeutic agent used for GBM treatment. We recently demonstrated that simvastatin (Simva) increases TMZ-induced apoptosis via the inhibition of autophagic flux in GBM cells. Considering the role of the unfolded protein response (UPR) pathway in the regulation of autophagy, we investigated the involvement of UPR in Simva–TMZ-induced cell death by utilizing highly selective IRE1 RNase activity inhibitor MKC8866, PERK inhibitor GSK-2606414 (PERKi), and eIF2α inhibitor salubrinal. Simva–TMZ treatment decreased the viability of GBM cells and significantly increased apoptotic cell death when compared to TMZ or Simva alone. Simva–TMZ induced both UPR, as determined by an increase in GRP78, XBP splicing, eukaryote initiation factor 2α (eIF2α) phosphorylation, and inhibited autophagic flux (accumulation of LC3β-II and inhibition of p62 degradation). IRE1 RNase inhibition did not affect Simva–TMZ-induced cell death, but it significantly induced p62 degradation and increased the microtubule-associated proteins light chain 3 (LC3)β-II/LC3β-I ratio in U87 cells, while salubrinal did not affect the Simva–TMZ induced cytotoxicity of GBM cells. In contrast, protein kinase RNA-like endoplasmic reticulum kinase (PERK) inhibition significantly increased Simva–TMZ-induced cell death in U87 cells. Interestingly, whereas PERK inhibition induced p62 accumulation in both GBM cell lines, it differentially affected the LC3β-II/LC3β-I ratio in U87 (decrease) and U251 (increase) cells. Simvastatin sensitizes GBM cells to TMZ-induced cell death via a mechanism that involves autophagy and UPR pathways. More specifically, our results imply that the IRE1 and PERK signaling arms of the UPR regulate Simva–TMZ-mediated autophagy flux inhibition in U251 and U87 GBM cells.
Collapse
|
21
|
Endoplasmic reticulum stress and protein degradation in chronic liver disease. Pharmacol Res 2020; 161:105218. [PMID: 33007418 DOI: 10.1016/j.phrs.2020.105218] [Citation(s) in RCA: 58] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Revised: 09/21/2020] [Accepted: 09/21/2020] [Indexed: 02/07/2023]
Abstract
Endoplasmic reticulum (ER) stress is easily observed in chronic liver disease, which often causes accumulation of unfolded or misfolded proteins in the ER, leading to unfolded protein response (UPR). Regulating protein degradation is an integral part of UPR to relieve ER stress. The major protein degradation system includes the ubiquitin-proteasome system (UPS) and autophagy. All three arms of UPR triggered in response to ER stress can regulate UPS and autophagy. Accumulated misfolded proteins could activate these arms, and then generate various transcription factors to regulate the expression of UPS-related and autophagy-related genes. The protein degradation process regulated by UPR has great significance in many chronic liver diseases, including non-alcoholic fatty liver disease (NAFLD), alcoholic liver disease (ALD), viral hepatitis, liver fibrosis, and hepatocellular carcinoma(HCC). In most instances, the degradation of excessive proteins protects cells with ER stress survival from apoptosis. According to the specific functions of protein degradation in chronic liver disease, choosing to promote or inhibit this process is promising as a potential method for treating chronic liver disease.
Collapse
|
22
|
Ma X, Jiang Y, Wen J, Zhao Y, Zeng J, Guo Y. A comprehensive review of natural products to fight liver fibrosis: Alkaloids, terpenoids, glycosides, coumarins and other compounds. Eur J Pharmacol 2020; 888:173578. [PMID: 32976828 DOI: 10.1016/j.ejphar.2020.173578] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Revised: 09/14/2020] [Accepted: 09/15/2020] [Indexed: 02/07/2023]
Abstract
The discovery of drugs to treat liver fibrosis has long been a challenge over the past decades due to its complicated pathogenesis. As a primary approach for drug development, natural products account for 30% of clinical drugs used for disease treatment. Therefore, natural products are increasingly important for their medicinal value in liver fibrosis therapy. In this part of the review, special focus is placed on the effect and mechanism of natural compounds, including alkaloids, terpenoids, glycosides, coumarins and others. A total of 36 kinds of natural compounds demonstrate significant antifibrotic effects in various liver fibrosis models in vivo and in hepatic stellate cells (HSCs) in vitro. Revealing the mechanism will provide further basis for clinical conversion, as well as accelerate drug discovery. The mechanism was further summarized with the finding of network regulation by several natural products, such as oxymatrine, paeoniflorin, ginsenoside Rg1 and taurine. Moreover, there are still improvements needed in investigating clinical efficacy, determining mechanisms, and combining applications, as well as semisynthesis and modification. Therefore, natural products area promising resource for agents that protect against liver fibrosis.
Collapse
Affiliation(s)
- Xiao Ma
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China
| | - Yinxiao Jiang
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China
| | - Jianxia Wen
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China; Department of Pharmacy, Fifth Medical Center of PLA General Hospital, Beijing, 100039, China
| | - Yanling Zhao
- Department of Pharmacy, Fifth Medical Center of PLA General Hospital, Beijing, 100039, China.
| | - Jinhao Zeng
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, 610072, China.
| | - Yaoguang Guo
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, 610072, China.
| |
Collapse
|
23
|
Kupffer Cell-Derived TNF- α Triggers the Apoptosis of Hepatic Stellate Cells through TNF-R1/Caspase 8 due to ER Stress. BIOMED RESEARCH INTERNATIONAL 2020; 2020:8035671. [PMID: 32802876 PMCID: PMC7421237 DOI: 10.1155/2020/8035671] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/26/2020] [Revised: 06/09/2020] [Accepted: 07/15/2020] [Indexed: 12/14/2022]
Abstract
Purpose To investigate the roles of ER stress in Kupffer cells (KCs) and KC-derived TNF-α in the apoptosis of hepatic stellate cells (HSCs). Methods A rat model of liver fibrosis was established. Liver and blood serum samples were collected. Liver function assays, Masson staining, Sirius Red staining, ELISAs, and TUNEL and immunohistochemical staining were performed. Liver function, liver fibrosis, KC phenotype, inflammatory factors, and number of active HSCs were investigated. KCs were isolated, treated with tunicamycin, and then, cocultured with primary hepatic stellate cells. ELISAs, immunofluorescence staining, flow cytometry, and Western blotting were performed. KC phenotype, inflammatory factors, HSC apoptosis, and TNF-R1/caspase 8 pathway activity were examined. Result s. ER stress in KCs reduced the levels of liver function markers, reduced the degree of liver fibrosis, and increased the number of KCs with the M1 phenotype and the expression of TNF-α. The increase in KC-derived TNF-α reduced the number of active HSCs and increased the activity of TNF-R1/caspase 8. Furthermore, ER stress in KCs promoted the polarization of KCs towards the M1 phenotype and increased the expression of TNF-α. The increase in KC-derived TNF-α triggered the apoptosis of HSCs and the activation of TNF-R1/caspase 8 in vitro, which was consistent with the in vivo results. Conclusion ER stress in KCs promotes the polarization of these cells towards the M1 phenotype and increases the expression of TNF-α. Then, the increase in KC-derived TNF-α triggers the apoptosis of HSCs through TNF-R1/caspase 8.
Collapse
|
24
|
Gao H, Wen N, Xu X, Hong G, Lai X. [Endoplasmic reticulum stress enhances tumor necrosis factor- α expression in rat Kupffer cells to trigger hepatic stellate apoptosis cell through TNFR/caspase-8 pathway]. NAN FANG YI KE DA XUE XUE BAO = JOURNAL OF SOUTHERN MEDICAL UNIVERSITY 2020; 40:632-639. [PMID: 32897203 DOI: 10.12122/j.issn.1673-4254.2020.05.04] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
OBJECTIVE To investigate the role of endoplasmic reticulum (ER)-stress of Kupffer cells (KCs) and KCs-derived tumor necrosis factor-α (TNF-α) in medicating apoptosis of hepatic stellate cell (HSC). METHODS Sixty male SD rats were randomized into control group, model group, ER- stress group, depletion group and KCs block group (n=15). The 4 groups of rats were given intraperitoneal injections (twice a week for 8 weeks) of normal saline (2 mg/kg); 40% CCl4 solution (in peanut oil, 2 mg/kg); 40% CCl4 solution (2 mg/kg) and tunicamycin (1 mg/kg); and 40% CCl4 solution (2 mg/kg) and tunicamycin (1 mg/kg) followed by clodronate liposomes (50 mg/kg), respectively. After the treatments, samples of the liver tissue and serum were collected from the rats from the 4 groups to isolate KC cells, which were co-cultured with LX2 cells. In the depletion group, the rats were injected with anti-rat TNFR mAb (0.35 mg/kg) via the portal vein before isolating the KCs. Liver function examination, Eirius red staining, ELISA, immuno- histochemical staining, and RT-PCR were performed to assess the liver function, liver fibrosis, KC phenotypes, expression of the in fl ammatory factors, and the number of active HSC was detected. The isolated KCs were treated with tunicamycin before co-culture with LX2 cells, and ELISA, RT-PCR and Western blot were performed to examine KC phenotypes, in fl ammatory factors, LX2 cell apoptosis and TNFR/caspase8 pathway activity. RESULTS Compared with the rats in the control group, the rats in the model group had significantly increased ALT and AST levels, Sirius red staining-positive area, and Desmin-positive cells (activated HSCs) (P < 0.05) with significantly lowered number of CD16-positive KCs (M1), and TNF-α protein and mRNA expression (P < 0.05). Compared with those in the model group, the rats in ER-stress group showed significantly decreased ALT and AST levels, Sirius red staining positivity and Desmin-positive cells (P < 0.05) and increased number of CD16-positive KCs and TNF-α expressions (P < 0.05). In the depletion group, compared with the ER-stress group, the rats had significantly increased ALT and AST levels of, Sirius red staining positivity and Desmin-positive cells (P < 0.05) and reduced CD16- positive KCs and TNF-αexpressions (P < 0.05). In the cell co-culture experiment, the model group showed significantly reduced TUNEL-positive LX2 cells, CD16-positive cells, and expressions of TNFR1, cleaved caspase- 8 and cleaved caspase- 3 in the KCs (P < 0.05) with increased Desmin-positive LX2 cells (P < 0.05). Compared with the model group, the ER- stress group exhibited significantly increased TUNEL-positive LX2 cells, CD16-positive cells and expressions of TNFR, cleaved caspase-8 and cleaved caspase-3 in the KCs (P < 0.05) and decreased Desmin-positive LX2 cells (P < 0.05). In the depletion group, blocking TNFR resulted in significantly decreased expressions of cleaved caspase-8 and cleaved caspase-3 compared with those in ER- stress group (P < 0.05) although there was no significant changed in TNFR expression. CONCLUSIONS ER stress of KCs promotes the transformation of KCs towards M1 phenotype and increases the expression of TNF-α, which triggers the apoptosis of HSCs through the TNFR/caspase-8 pathway.
Collapse
Affiliation(s)
- Hong Gao
- Department of Hepatobiliary Surgery, Chongqing Fourth People's Hospital, Chongqing 400014, China
| | - Nan Wen
- West China School of Medicine, Sichuan University, Chengdu 610041, China
| | - Xuesong Xu
- Department of Hepatobiliary Surgery, Second Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Guoqing Hong
- Department of Hepatobiliary Surgery, People's Hospital of Tongnan District, Chongqing 402660, China
| | - Xing Lai
- Department of Hepatobiliary Surgery, Second Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| |
Collapse
|
25
|
Sangaunchom P, Dharmasaroja P. Caffeine Potentiates Ethanol-Induced Neurotoxicity Through mTOR/p70S6K/4E-BP1 Inhibition in SH-SY5Y Cells. Int J Toxicol 2020; 39:131-140. [DOI: 10.1177/1091581819900150] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Caffeine is a popular psychostimulant, which is frequently consumed with ethanol. However, the effects of caffeine on neuronal cells constantly exposed to ethanol have not been investigated. Apoptosis and oxidative stress occurring in ethanol-induced neurotoxicity were previously associated with decreased phosphorylation of the mTOR/p70S6K/4E-BP1 signaling proteins. Evidence also suggested that caffeine inhibits the mTOR pathway. In this study, human SH-SY5Y neuroblastoma cells were exposed to caffeine after pretreatment for 24 hours with ethanol. Results indicated that both ethanol and caffeine caused neuronal cell death in a dose- and time-dependent manner. Exposure to 20-mM caffeine for 24 hours magnified reduced cell viability and enhanced apoptotic cell death induced by 200 mM of ethanol pretreatment. The phosphorylation of mTOR, p70S6K, and 4E-BP1 markedly decreased in cells exposed to caffeine after ethanol pretreatment, associated with a decrease of the mitochondrial membrane potential (ΔΨm). These findings suggested that caffeine treatment after neuronal cells were exposed to ethanol resulted in marked cell damages, mediated through enhanced inhibition of mTOR/p70S6K/4E-BP1 signaling leading to impaired ΔΨm and, eventually, apoptotic cell death.
Collapse
Affiliation(s)
- Pongsak Sangaunchom
- Faculty of Science, Toxicology Graduate Program, Mahidol University, Bangkok, Thailand
| | - Permphan Dharmasaroja
- Faculty of Science, Department of Anatomy, Mahidol University, Bangkok, Thailand. Dharmasaroja is now with Chakri Naruebodindra Medical Institute, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Samut Prakan, Thailand
| |
Collapse
|
26
|
Zhong X, Wang B, Zhang G, Yuan Y, Hu X, Xiong J, Zheng P, Liu Y, Xu K, Xiao J, Wu Y, Ye J. Autophagy Activation Is Involved in Acidic Fibroblast Growth Factor Ameliorating Parkinson's Disease via Regulating Tribbles Homologue 3. Front Pharmacol 2019; 10:1428. [PMID: 31849673 PMCID: PMC6901012 DOI: 10.3389/fphar.2019.01428] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2019] [Accepted: 11/08/2019] [Indexed: 12/15/2022] Open
Abstract
Parkinson's disease (PD) is a degenerative disorder of the central nervous system, resulting in loss of dopamine neurons. Excessive endoplasmic reticulum (ER) stress and autophagy dysfunction play a crucial role on Parkinson's disease (PD) development. It has been showed that acidic fibroblast growth factor (aFGF) alleviates the development of PD by inhibiting ER stress. But the role of autophagy and its relationship with ER stress during aFGF treatment for PD has not been elucidated. We found that both aFGF and rapamycin (Rapa) improved 6-Hydroxy Dopamine (6-OHDA)-induced PD development as shown with histomorphology results in striatum and substantia nigra (SNpc). Additionally, aFGF promoted autophagy with increasing mTOR and decreasing p62 expressions, and then exerts its neuroprotective role in 6-OHDA-treated PC12 cells, which were abolished by chloroquine (CQ) treatment. Moreover, 4-phenylbutyric acid (4-PBA) administration inhibited the expressions of autophagy markers during 6-OHDA-treated PC12 cells, which was similar with aFGF treating PC12 cells under 6-OHDA condition. Furthermore, we had detected the expressions of CHOP and its downstream factor, tribbles homologue 3 (TRB3), a pro-apoptotic protein. We found that TRB3 and CHOP expressions were significantly downregulated after treating with aFGF and 4-PBA in 6-OHDA-treated PC12 cells and PD model. Taken together, this study has demonstrated that aFGF treatment ameliorates 6-OHDA-induced elevated ER stress and subsequently suppression of autophagy via inhibiting TRB3 activation, and consequently ameliorates 6-OHDA-induced neurotoxicity.
Collapse
Affiliation(s)
- Xingfeng Zhong
- Department of Anesthesia, The First Affiliated Hospital, Gannan Medical University, Ganzhou, China.,Department of Anesthesia, Affiliated Hospital of Guizhou Medical University, Guiyang, China
| | - Beini Wang
- Molecular Pharmacology Research Center, School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou, China
| | - Guanyinsheng Zhang
- Department of Anesthesia, The First Affiliated Hospital, Gannan Medical University, Ganzhou, China
| | - Yuan Yuan
- Molecular Pharmacology Research Center, School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou, China
| | - Xiaoli Hu
- Department of Anesthesia, The First Affiliated Hospital, Gannan Medical University, Ganzhou, China
| | - Jun Xiong
- Molecular Pharmacology Research Center, School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou, China
| | - Peipei Zheng
- Molecular Pharmacology Research Center, School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou, China
| | - Yaqian Liu
- Molecular Pharmacology Research Center, School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou, China
| | - Ke Xu
- The Institute of Life Sciences, Wenzhou University, Wenzhou, China
| | - Jian Xiao
- Molecular Pharmacology Research Center, School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou, China
| | - Yanqing Wu
- The Institute of Life Sciences, Wenzhou University, Wenzhou, China
| | - Junming Ye
- Department of Anesthesia, The First Affiliated Hospital, Gannan Medical University, Ganzhou, China
| |
Collapse
|
27
|
High-fat and high-cholesterol diet decreases phosphorylated inositol-requiring kinase-1 and inhibits autophagy process in rat liver. Sci Rep 2019; 9:12514. [PMID: 31467308 PMCID: PMC6715744 DOI: 10.1038/s41598-019-48973-w] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2018] [Accepted: 08/14/2019] [Indexed: 12/19/2022] Open
Abstract
Precise molecular pathways involved in the progression of non-alcoholic steatohepatitis (NASH) remain to be elucidated. As Mallory–Denk bodies were occasionally observed in the enlarged hepatocytes in NASH model rat (SHRSP5/Dmcr) fed high-fat and high-cholesterol (HFC) diet, we aimed to clarify the roles of autophagy and endoplasmic reticulum (ER) stress in NASH progression. Male SHRSP5/Dmcr were randomly divided into 4 groups. Two groups were fed a control diet; the other two groups were fed a HFC diet for 2 and 8 weeks, respectively. The HFC diet increased the autophagy-related proteins levels and microtubule-associated protein 1 light chain 3-II/I ratio after 2 and 8 weeks, respectively. However, regarding ER stress-related proteins, the HFC diet decreased the levels of phosphorylated (p-) inositol-requiring kinase-1 (p-IRE-1) and p-protein kinase RNA-like ER kinase after 2 weeks. Additionally, the HFC diet increased anti-ubiquitin-positive cells and the level of the autophagy substrate p62, suggesting that the HFC diet induced dysfunction in ubiquitin-dependent protein degradation pathways. In conclusion, the HFC diet arrested the autophagy process in the liver; this was particularly associated with decreases in p-IRE-1 expression.
Collapse
|
28
|
Chen X, Han K, Lin G, Liu C, Wang S, Shi X, Hu Z, Wu C, Xu X, Hu C. Ctenopharyngodon Idella STAT3 alleviates autophagy by up-regulating BCL-2 expression. FISH & SHELLFISH IMMUNOLOGY 2019; 91:194-201. [PMID: 31108175 DOI: 10.1016/j.fsi.2019.05.034] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2019] [Revised: 05/14/2019] [Accepted: 05/17/2019] [Indexed: 06/09/2023]
Abstract
In mammals, STAT3 (Signal transducer and activator of transcription 3) plays an absolutely vital role in response to cytokines and growth factors. In mammals, IL-6/JAK/STAT3 pathway is closely linked to immune response and promotes cell proliferation, survival and metastasis. Some recent studies have already demonstrated that STAT3 regulates autophagy. As a downstream target gene of STAT3, Bcl-2 (B-cell lymphoma 2) not only participates in regulating apoptosis, but also responds to autophagy. STAT3 regulates autophagy through Bcl-2. In general, the generation of autophagy is always accompanied by the change of apoptosis, and the occurrence of apoptosis is often accompanied by the decreased of cell viability. In grass carp (Ctenopharyngodon idella), LPS-induced autophagy is involved in the release of pro-inflammatory cytokines. However, only the relationship between autophagy and cytokines was illustrated, in which the signaling pathways were not discussed. In the present study, we found that the autophagy inducer, Tunicamycin (Tm), can induce C.Idella Kidney cells (CIK) autophagy. When the cells were incubated with the recombinant human IL-6 (rIL-6) for a short period of times, the mRNA expression level of C.Idella IL-6R and STAT3 were increased. At the same time, the number of GFP-LC3 puncta and the ratio of LC3-II/LC3-I were both decreased obviously in cells. It indicated that the rIL-6 can significantly alleviate autophagy induced by Tm. We speculated that CiSTAT3 may play a key role in the process. To confirm this hypothesis, we performed a rIL-6 activating CiSTAT3 assay. The result demonstrated that rIL-6 can induce CiSTAT3 to form homologous dimmer. The activated CiSTAT3 regulated the transcription activity of CiBcl-2, finally led to a decrease of autophagy. In addition, when cells were in the state of autophagy, apoptosis was increased and cell viability was decreased. When CiSTAT3 was activated, cell apoptosis weakened and cell viability was increased. The results suggest that CiSTAT3 plays an important role in maintaining the normal physiological process of cells.
Collapse
Affiliation(s)
- Xingxing Chen
- Department of Bioscience, College of Life Science, Nanchang University, Nanchang, 330031, China
| | - Kun Han
- Department of Bioscience, College of Life Science, Nanchang University, Nanchang, 330031, China
| | - Gang Lin
- Department of Bioscience, College of Life Science, Nanchang University, Nanchang, 330031, China
| | - Changxin Liu
- Department of Bioscience, College of Life Science, Nanchang University, Nanchang, 330031, China
| | - Shanghong Wang
- Department of Bioscience, College of Life Science, Nanchang University, Nanchang, 330031, China
| | - Xiao Shi
- Department of Bioscience, College of Life Science, Nanchang University, Nanchang, 330031, China
| | - Zhizhen Hu
- Department of Bioscience, College of Life Science, Nanchang University, Nanchang, 330031, China
| | - Chuxin Wu
- Yuzhang Normal University, Nanchang, 330103, China
| | - Xiaowen Xu
- Department of Bioscience, College of Life Science, Nanchang University, Nanchang, 330031, China
| | - Chengyu Hu
- Department of Bioscience, College of Life Science, Nanchang University, Nanchang, 330031, China.
| |
Collapse
|
29
|
Romualdo GR, Rocha AB, Vinken M, Cogliati B, Moreno FS, Chaves MAG, Barbisan LF. Drinking for protection? Epidemiological and experimental evidence on the beneficial effects of coffee or major coffee compounds against gastrointestinal and liver carcinogenesis. Food Res Int 2019; 123:567-589. [PMID: 31285007 DOI: 10.1016/j.foodres.2019.05.029] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2019] [Revised: 05/15/2019] [Accepted: 05/20/2019] [Indexed: 02/07/2023]
Abstract
Recent meta-analyses indicate that coffee consumption reduces the risk for digestive tract (oral, esophageal, gastric and colorectal) and, especially, liver cancer. Coffee bean-derived beverages, as the widely-consumed espresso and "common" filtered brews, present remarkable historical, cultural and economic importance globally. These drinks have rich and variable chemical composition, depending on factors that vary from "seeding to serving". The alkaloids caffeine and trigonelline, as well as the polyphenol chlorogenic acid, are some of the most important bioactive organic compounds of these beverages, displaying high levels in both espresso and common brews and/or increased bioavailability after consumption. Thus, we performed a comprehensive literature overview of current knowledge on the effects of coffee beverages and their highly bioavailable compounds, describing: 1) recent epidemiological and experimental findings highlighting the beneficial effects against gastrointestinal/liver carcinogenesis, and 2) the main molecular mechanisms in these in vitro and in vivo bioassays. Findings predominantly address the protective effects of coffee beverages and their most common/bioavailable compounds individually on gastrointestinal and liver cancer development. Caffeine, trigonelline and chlorogenic acid modulate common molecular targets directly implicated in key cancer hallmarks, what could stimulate novel translational or population-based mechanistic investigations.
Collapse
Affiliation(s)
| | | | - Mathieu Vinken
- Department of In Vitro Toxicology and Dermato-Cosmetology, Faculty of Medicine and Pharmacy, Vrije Universiteit Brussel, Brussels, Belgium
| | - Bruno Cogliati
- Department of Pathology, School of Veterinary Medicine and Animal Science, University of São Paulo (USP), São Paulo, Brazil
| | - Fernando Salvador Moreno
- Department of Food and Experimental Nutrition, Faculty of Pharmaceutical Sciences, University of São Paulo (USP), São Paulo, Brazil
| | - María Angel García Chaves
- Department of Oncology, Biosanitary Research Institute of Granada (ibs.GRANADA), University Hospitals of Granada-University of Granada, Granada, Spain
| | - Luis Fernando Barbisan
- Department of Morphology, Biosciences Institute, São Paulo State University (UNESP), Botucatu, Brazil.
| |
Collapse
|
30
|
Abstract
Endoplasmic reticulum (ER) stress is a major contributor to liver disease and hepatic fibrosis, but the role it plays varies depending on the cause and progression of the disease. Furthermore, ER stress plays a distinct role in hepatocytes versus hepatic stellate cells (HSCs), which adds to the complexity of understanding ER stress and its downstream signaling through the unfolded protein response (UPR) in liver disease. Here, the authors focus on the current literature of ER stress in nonalcoholic and alcoholic fatty liver diseases, how ER stress impacts hepatocyte injury, and the role of ER stress in HSC activation and hepatic fibrosis. This review provides insight into the complex signaling and regulation of the UPR, parallels and distinctions between different liver diseases, and how ER stress may be targeted as an antisteatotic or antifibrotic therapy to limit the progression of liver disease.
Collapse
Affiliation(s)
- Jessica L. Maiers
- Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, Minnesota
| | - Harmeet Malhi
- Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, Minnesota
| |
Collapse
|
31
|
Wang F, Tan YQ, Zhang J, Zhou G. Insulin-like growth factor 1 exhibits the pro-autophagic and anti-apoptotic activity on T cells of oral lichen planus. Int J Biol Macromol 2019; 133:640-646. [PMID: 31026523 DOI: 10.1016/j.ijbiomac.2019.04.158] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2019] [Revised: 04/22/2019] [Accepted: 04/22/2019] [Indexed: 02/08/2023]
Abstract
BACKGROUND Oral lichen planus (OLP) is an autoimmune mucocutaneous disease characterized by T cell infiltrating in microenvironment. T cell-mediated immune dysfunctions are of importance in the pathogenesis of OLP. Insulin-like growth factor 1 (IGF1) has profound effects on maintenance of immune functions; however, its specific mechanism in OLP remains unknown. This study aims to explore how IGF1 regulates T-cell immune functions in OLP. METHODS IGF1 in OLP lesions was stained by immunohistochemistry and immunofluorescence. Additionally, proliferation, apoptosis and autophagy of T cells were examined after stimulation with IGF1 for 24 h, respectively. Z-VAD-FMK, a pan-caspase inhibitor, was used to explore IGF1-mediated crosstalk between apoptosis and autophagy. The modulation of IGF1 on ERK and PI3K/mTOR pathway was also analyzed. RESULTS IGF1 was increased in OLP lesions and was remarkably co-located with T cells. IGF1 significantly enhanced T-cell proliferation, suppressed apoptosis and induced autophagic flux. Moreover, autophagy was induced by apoptosis inhibitor, Z-VAD-FMK, thereby reducing death of T cells. IGF1 could facilitate Z-VAD-FMK-induced autophagy and then decrease proportion of apoptotic T cells. IGF1-treated T cells also showed elevated phosphorylation of ERK, PI3K and mTOR. CONCLUSIONS IGF1 inhibited apoptosis and promoted autophagy in T cells, potentially contributing to the pathogenesis of OLP.
Collapse
Affiliation(s)
- Fang Wang
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, PR China
| | - Ya-Qin Tan
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, PR China
| | - Jing Zhang
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, PR China; Department of Oral Medicine, School and Hospital of Stomatology, Wuhan University, PR China
| | - Gang Zhou
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, PR China; Department of Oral Medicine, School and Hospital of Stomatology, Wuhan University, PR China.
| |
Collapse
|
32
|
Effects of Caffeine Treatment on Hepatopulmonary Syndrome in Biliary Cirrhotic Rats. Int J Mol Sci 2019; 20:ijms20071566. [PMID: 30925782 PMCID: PMC6480428 DOI: 10.3390/ijms20071566] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2019] [Revised: 03/22/2019] [Accepted: 03/25/2019] [Indexed: 02/06/2023] Open
Abstract
Hepatopulmonary syndrome (HPS) is a lethal complication of cirrhosis characterized by hypoxia and overt intrapulmonary shunting. In this study, we investigated the effect of caffeine in rats with common bile duct ligation (CBDL)-induced liver cirrhosis and HPS. CBDL rats were randomly allocated to receive caffeine or vehicle for 14 days. On the 28th day after CBDL, mortality rate, hemodynamics, liver, and renal biochemistry parameters and arterial blood gas analysis were evaluated. Lung and liver were dissected for the evaluation of inflammation, angiogenesis and protein expressions. In another series with parallel groups, the intrapulmonary shunting was determined. Caffeine significantly reduced portal pressure (caffeine vs. control: 10.0 ± 3.7 vs. 17.0 ± 8.1 mmHg, p < 0.05) in CBDL rats. The mortality rate, mean arterial pressure, biochemistry data and hypoxia were similar between caffeine-treated and control groups. Caffeine alleviated liver fibrosis and intrahepatic angiogenesis but intrapulmonary inflammation and angiogenesis were not ameliorated. The hepatic VEGF/Rho-A protein expressions were down-regulated but the pulmonary inflammation- and angiogenesis-related protein expressions were not significantly altered by caffeine. Caffeine did not reduce the intrapulmonary shunting, either. Caffeine has been shown to significantly improve liver fibrosis, intrahepatic angiogenesis and portal hypertension in cirrhotic rats, however, it does not ameliorate HPS.
Collapse
|
33
|
Consumption of decaffeinated coffee protects against the development of early non-alcoholic steatohepatitis: Role of intestinal barrier function. Redox Biol 2018; 21:101092. [PMID: 30605883 PMCID: PMC6313826 DOI: 10.1016/j.redox.2018.101092] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2018] [Revised: 12/18/2018] [Accepted: 12/20/2018] [Indexed: 02/08/2023] Open
Abstract
Background Non-alcoholic fatty liver disease (NAFLD) is one of the most common liver diseases worldwide lacking universally accepted therapies. Studies suggest that coffee consumption is associated with a reduced risk of NAFLD; however, molecular mechanisms and ingredients involved remain to be fully understood. Here, we determined the effects of regular intake of decaffeinated coffee on the development of NAFLD in mice, and molecular mechanisms involved. Methods Female C57BL/6J mice (n = 6–7/ group) were pair-fed either a liquid control diet (C) or fat-, fructose- and cholesterol-rich diet (FFC) +/- decaffeinated coffee (DeCaf, 6 g/kg BW) for 4 days or 6 weeks. Indices of liver damage, hepatic inflammation and parameters of insulin resistance and intestinal permeability as well as nitric oxide system were determined. Results Early signs of insulin resistance and non-alcoholic steatohepatitis (NASH) found after 6 weeks of FFC feeding were significantly lower in FFC+DeCaf-fed mice when compared to FFC-fed animals. Moreover, elevation of portal endotoxin levels and loss of tight junction proteins in proximal small intestine found in FFC-fed mice were significantly attenuated in FFC+DeCaf-fed animals. These beneficial effects of DeCaf were associated with a protection against the significant induction of inducible NO-synthase protein levels and 3-nitrotyrosine protein adducts found in proximal small intestine of FFC-fed mice. Similar protective effects of DeCaf were also found in mice fed the FFC diet short-term. Conclusion Our results suggest that protective effects of DeCaf on the development of NAFLD are at least in part related to maintaining intestinal barrier function. decaffeinated coffee protects mice from the development of NAFLD. decaffeinated coffee attenuated increased translocation of bacterial endotoxins. decaffeinated coffee prevents diet-induced induction of iNOS in small intestine.
Collapse
|
34
|
Salinomycin-induced autophagy blocks apoptosis via the ATG3/AKT/mTOR signaling axis in PC-3 cells. Life Sci 2018; 207:451-460. [DOI: 10.1016/j.lfs.2018.06.034] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2018] [Revised: 06/25/2018] [Accepted: 06/28/2018] [Indexed: 11/19/2022]
|