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Li T, Tong Q, Wang Z, Yang Z, Sun Y, Cai J, Xu Q, Lu Y, Liu X, Lin K, Qian Y. Epigallocatechin-3-Gallate Inhibits Atrial Fibrosis and Reduces the Occurrence and Maintenance of Atrial Fibrillation and its Possible Mechanisms. Cardiovasc Drugs Ther 2023:10.1007/s10557-023-07447-y. [PMID: 37000367 DOI: 10.1007/s10557-023-07447-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 03/07/2023] [Indexed: 04/01/2023]
Abstract
BACKGROUND Atrial fibrosis is one of the main causes of the onset and recurrence of atrial fibrillation (AF), for which there is no effective treatment. The aim of this study was to investigate the effect and mechanism of epigallocatechin-3-gallate (EGCG) on AF in rats. METHODS The rat model of AF was established by rapid pacing induction after angiotensin-II (Ang-II) induced atrial fibrosis to verify the relationship between atrial fibrosis and the AF. The expression levels of TGF-β/Smad3 pathway molecules and lysyl oxidase (LOX) in AF were detected. Subsequently, EGCG was used to intervene Ang-II-induced atrial fibrosis to explore the role of EGCG in the treatment of AF and its inhibitory mechanism on fibrosis. It was further verified that EGCG inhibited the production of collagen and the expression of LOX through the TGF-β/Smad3 pathway at the cellular level. RESULTS The results showed that the induction rate and maintenance time of AF in rats increased with the increase of the degree of atrial fibrosis. Meanwhile, the expressions of Col I, Col III, molecules related to TGF-β/Smad3 pathway, and LOX increased significantly in the atrial tissues of rats in the Ang-II induced group. EGCG could reduce the occurrence and maintenance time of AF by inhibiting the degree of Ang-induced rat atrial fibrosis. Cell experiments confirmed that EGCG could reduce the synthesis of collagen and the expression of LOX in cardiac fibroblast induced by Ang-II. The possible mechanism is to down-regulate the expression of genes and proteins related to the TGF-β/Smad3 pathway. CONCLUSION EGCG could downregulate the expression levels of collagen and LOX by inhibiting the TGF-β/Smad3 signaling pathway, alleviating Ang-II-induced atrial fibrosis, which in turn inhibited the occurrence and curtailed the duration of AF.
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Affiliation(s)
- Tao Li
- Department of Cardiovascular Surgery, West China Hospital, Sichuan University, Chengdu, China
| | - Qi Tong
- Department of Cardiovascular Surgery, West China Hospital, Sichuan University, Chengdu, China
| | - Zhengjie Wang
- Department of Cardiovascular Surgery, West China Hospital, Sichuan University, Chengdu, China
| | - Ziqi Yang
- West China Medical School /West China Hospital, Sichuan University, Chengdu, China
| | - Yiren Sun
- West China Medical School /West China Hospital, Sichuan University, Chengdu, China
| | - Jie Cai
- Department of Cardiovascular Surgery, West China Hospital, Sichuan University, Chengdu, China
| | - Qiyue Xu
- Department of Clinical Medicine, Mudanjiang Medical University, Mudanjiang, Heilongjiang, China
| | - Yuan Lu
- Department of Cardiology, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, China
| | - Xuemei Liu
- Chinese Journal of Thoracic and Cardiovascular Surgery, West China Hospital Press, West China Hospital, Sichuan University, Chengdu, China
| | - Ke Lin
- Department of Cardiovascular Surgery, West China Hospital, Sichuan University, Chengdu, China
| | - Yongjun Qian
- Department of Cardiovascular Surgery, West China Hospital, Sichuan University, Chengdu, China.
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2
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Sahadevan R, Binoy A, Vechalapu SK, Nanjan P, Sadhukhan S. In situ global proteomics profiling of EGCG targets using a cell-permeable and Click-able bioorthogonal probe. Int J Biol Macromol 2023; 237:123991. [PMID: 36907293 DOI: 10.1016/j.ijbiomac.2023.123991] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Revised: 03/01/2023] [Accepted: 03/05/2023] [Indexed: 03/12/2023]
Abstract
Despite possessing a wide spectrum of biological activities, molecular targets of EGCG remain elusive and as a result, its precise mode of action is still unknown. Herein, we have developed a novel cell-permeable and Click-able bioorthogonal probe for EGCG, YnEGCG for in situ detection and identification of its interacting proteins. The strategic structural modification on YnEGCG allowed it to retain innate biological activities of EGCG (IC50 59.52 ± 1.14 μM and 9.07 ± 0.01 μM for cell viability and radical scavenging activity, respectively). Chemoproteomics profiling identified 160 direct EGCG targets, with H:L ratio ≥ 1.10 from the list of 207 proteins, including multiple new proteins that were previously unknown. The targets were broadly distributed in various subcellular compartments suggesting a polypharmacological mode of action of EGCG. GO analysis revealed that the primary targets belonged to the enzymes that regulate key metabolic processes including glycolysis and energy homeostasis, also the cytoplasm (36 %) and mitochondria (15.6 %) contain the majority of EGCG targets. Further, we validated that EGCG interactome was closely associated with apoptosis indicating its role in inducing toxicity in cancer cells. For the first time, this in situ chemoproteomics approach could identify a direct and specific EGCG interactome under physiological conditions in an unbiased manner.
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Affiliation(s)
- Revathy Sahadevan
- Department of Chemistry, Indian Institute of Technology Palakkad, Kerala, India
| | - Anupama Binoy
- Department of Chemistry, Indian Institute of Technology Palakkad, Kerala, India
| | - Sai K Vechalapu
- Department of Chemistry, Indian Institute of Technology Kanpur, Uttar Pradesh, India
| | - Pandurangan Nanjan
- Department of Chemistry, Indian Institute of Technology Palakkad, Kerala, India
| | - Sushabhan Sadhukhan
- Department of Chemistry, Indian Institute of Technology Palakkad, Kerala, India; Physical & Chemical Biology Laboratory, Indian Institute of Technology Palakkad, Kerala, India; Department of Biological Sciences & Engineering, Indian Institute of Technology Palakkad, Kerala, India.
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3
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Patial V, Katoch S, Chhimwal J, Dadhich G, Sharma V, Rana A, Joshi R, Padwad Y. Catechins prevent obesity-induced kidney damage by modulating PPARγ/CD36 pathway and gut-kidney axis in rats. Life Sci 2023; 316:121437. [PMID: 36702203 DOI: 10.1016/j.lfs.2023.121437] [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: 11/16/2022] [Revised: 01/03/2023] [Accepted: 01/20/2023] [Indexed: 01/25/2023]
Abstract
Obesity is an epidemic and a growing public health concern worldwide. It is one of the significant risk factors for developing chronic kidney disease. In the present study, we evaluated the preventive effect of green tea catechins (GTC) against obesity-induced kidney damage and revealed the underlying molecular mechanism of action. Various green tea catechins were quantified in the catechins-rich fraction using HPLC. In vitro, the palmitic and oleic acid-treated NRK-52E cells showed reduced fat accumulation and modulated expressions of PPARγ, CD36, and TGFβ after GTC treatment. In vivo, rats were fed with a high-fat diet (HFD), and the effect of GTC was assessed at 150 and 300 mg/kg body weight doses. HFD-fed rats showed a significant reduction in weight gain and improved serum creatinine, urea, and urine microalbumin levels after GTC treatment. The improved adipokines and insulin levels in GTC treated groups indicated the insulin-sensitizing effect. Histopathology revealed reduced degenerative changes, fibrous tissue deposition, and mesangial matrix proliferation in GTC treated groups. GTC treatment also downregulated the gene expressions of lipogenic and inflammatory factors and improved the altered expressions of CD36 and PPARγ in the kidney tissue. Further, GTC prevented gut dysbiosis in rats by promoting healthy microbes like Akkermansia muciniphila and Lactobacillus reuteri. Faecal metabolome revealed reduced saturated fatty acids, and improved amino acid levels in the GTC treated groups, which help to maintain gut health and metabolism. Overall, GTC prevented obesity-induced kidney damage by modulating PPARγ/CD36 signaling and maintaining gut health in rats.
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Affiliation(s)
- Vikram Patial
- Pharmacology and Toxicology Laboratory, Dietetics and Nutrition Technology Division, CSIR-Institute of Himalayan Bioresource Technology, Palampur 176061, H.P., India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh 201002, India.
| | - Swati Katoch
- Pharmacology and Toxicology Laboratory, Dietetics and Nutrition Technology Division, CSIR-Institute of Himalayan Bioresource Technology, Palampur 176061, H.P., India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh 201002, India
| | - Jyoti Chhimwal
- Pharmacology and Toxicology Laboratory, Dietetics and Nutrition Technology Division, CSIR-Institute of Himalayan Bioresource Technology, Palampur 176061, H.P., India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh 201002, India
| | - Garima Dadhich
- Pharmacology and Toxicology Laboratory, Dietetics and Nutrition Technology Division, CSIR-Institute of Himalayan Bioresource Technology, Palampur 176061, H.P., India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh 201002, India
| | - Vinesh Sharma
- Pharmacology and Toxicology Laboratory, Dietetics and Nutrition Technology Division, CSIR-Institute of Himalayan Bioresource Technology, Palampur 176061, H.P., India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh 201002, India
| | - Ajay Rana
- Pharmacology and Toxicology Laboratory, Dietetics and Nutrition Technology Division, CSIR-Institute of Himalayan Bioresource Technology, Palampur 176061, H.P., India
| | - Robin Joshi
- Biotechnology Division, CSIR-Institute of Himalayan Bioresource Technology, Palampur 176061, H.P., India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh 201002, India
| | - Yogendra Padwad
- Pharmacology and Toxicology Laboratory, Dietetics and Nutrition Technology Division, CSIR-Institute of Himalayan Bioresource Technology, Palampur 176061, H.P., India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh 201002, India.
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4
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Ullah A, Chen G, Yibang Z, Hussain A, Shafiq M, Raza F, Liu D, Wang K, Cao J, Qi X. A new approach based on CXCR4-targeted combination liposomes for the treatment of liver fibrosis. Biomater Sci 2022; 10:2650-2664. [PMID: 35420075 DOI: 10.1039/d2bm00242f] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Liver fibrosis results from excessive extracellular matrix accumulation due to injury and leads to cirrhosis, cancer, and death. Herein, we propose a chemokine receptor 4 (CXCR4)-targeted combination (CTC) liposomal therapy to treat carbon tetrachloride (CCl4)-induced liver fibrosis in a mouse model. This study aims to combine small molecules such as pirfenidone and AMD3100 in a single nanoplatform to investigate their synergistic antifibrotic effects in a setting of CCl4-induced liver fibrosis. CTC liposomes (CTC lipo) were prepared using the thin-film hydration method. CTC lipo exhibited a spherical shape, and the particle size was recorded at the nanoscale which confirms its appropriateness for in vitro and in vivo applications. CTC lipo had good storage and serum stability. The entrapped drugs in CTC lipo showed reduced toxicity at higher concentrations. CTC lipo displayed CXCR4 mediated cell uptake and were internalized by caveolae-mediated endocytosis. CTC lipo showed CXCR4 targeting and stromal cell-derived factor 1α (SDF1-α)/CXCR4 axis blocking activity. CTC lipo reduced the elevated serum aspartate aminotransferase (AST), alanine transaminase (ALT), and hydroxyproline (HYP) levels. The histological studies showed improved liver architecture and reduced collagen deposition after treatment. Transforming growth factor β (TGFβ), alpha-smooth muscle actin (α-SMA), and collagen I were elevated by CCl4 in comparison with the Sham. Upon CTC liposomal treatment, the quantitative score for the elevated fibrotic proteins such as TGFβ, α-SMA, and collagen I was normalized. CTC lipo displayed significant downregulation of the upregulated TGFβ, α-SMA, collagen I, and P-p38 expressions at the molecular level. The CXCR4 targeted liposomes showed prolonged biodistribution at 24 h. Our findings indicated that CTC lipo might be an alternative antifibrotic therapy that may offer new access to research and development. In a nutshell, the present study suggests that systemic administration of CTC lipo has efficient antifibrotic potential and deserves to be investigated for further clinical applications.
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Affiliation(s)
- Aftab Ullah
- College of Pharmaceutical Science, Jiangsu University, Zhenjiang, Jiangsu 212013, China.
| | - Gang Chen
- Institute of Comparative Medicine, College of Veterinary Medicine, Yangzhou University, Yangzhou 225009, Jiangsu, China
| | - Zhang Yibang
- College of Pharmaceutical Science, Jiangsu University, Zhenjiang, Jiangsu 212013, China.
| | - Abid Hussain
- School of Life Science, Advanced Research Institute of Multidisciplinary Science, Institute of Engineering Medicine, Key Laboratory of Molecular Medicine and Biotherapy, Beijing Institute of Technology, Beijing, 100081, China
- Chinese Academy of Sciences (CAS) Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology of China, Beijing 100190, China
| | - Muhammad Shafiq
- Department of Pharmacy, Shantou University Medical College, 22 Xinling Road, Shantou 515041, Guangdong, China
| | - Faisal Raza
- School of Pharmacy, Shanghai Jiaotong University, Shanghai 200240, Shanghai, China
| | - Daojun Liu
- Department of Pharmacy, Shantou University Medical College, 22 Xinling Road, Shantou 515041, Guangdong, China
| | - Kaikai Wang
- School of Pharmacy, Nantong University, Nantong 226001, China
| | - Jin Cao
- College of Pharmaceutical Science, Jiangsu University, Zhenjiang, Jiangsu 212013, China.
| | - Xueyong Qi
- College of Pharmaceutical Science, Jiangsu University, Zhenjiang, Jiangsu 212013, China.
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5
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Induction of mesenchymal-epithelial transition (MET) by epigallocatechin-3-gallate to reverse epithelial-mesenchymal transition (EMT) in SNAI1-overexpressed renal cells: A potential anti-fibrotic strategy. J Nutr Biochem 2022; 107:109066. [DOI: 10.1016/j.jnutbio.2022.109066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2021] [Revised: 03/04/2022] [Accepted: 04/25/2022] [Indexed: 11/19/2022]
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Xu H, Wu T, Huang L. Therapeutic and delivery strategies of phytoconstituents for renal fibrosis. Adv Drug Deliv Rev 2021; 177:113911. [PMID: 34358538 DOI: 10.1016/j.addr.2021.113911] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Revised: 07/07/2021] [Accepted: 07/29/2021] [Indexed: 12/11/2022]
Abstract
Chronic kidney disease (CKD) is one of the most common diseases endangering human health and life. By 2030, 14 per 100,000 people may die from CKD. Renal fibrosis (RF) is an important intermediate link and the final pathological change during CKD progression to the terminal stage. Therefore, identifying safe and effective treatment methods for RF has become an important goal. In 2018, the World Health Organization introduced traditional Chinese medicine into its effective global medical program. Various phytoconstituents that affect the RF process have been extracted from different plants. Here, we review the potential therapeutic capabilities of active phytoconstituents in RF treatment and discuss how phytoconstituents can be structurally modified or combined with other ingredients to enhance efficiency and reduce toxicity. We also summarize phytoconstituent delivery strategies to overcome renal barriers and improve bioavailability and targeting.
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Affiliation(s)
- Huan Xu
- Department of Pharmacy, School of Chemistry and Chemical Engineering, Liaoning Normal University, Dalian 116029, People's Republic of China.
| | - Tianyi Wu
- Department of Pharmacy, School of Chemistry and Chemical Engineering, Liaoning Normal University, Dalian 116029, People's Republic of China
| | - Leaf Huang
- Division of Pharmacoengineering and Molecular Pharmaceutics, Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, United States
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7
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DiNicolantonio JJ, McCarty MF, Barroso-Aranda J, Assanga S, Lujan LML, O'Keefe JH. A nutraceutical strategy for downregulating TGFβ signalling: prospects for prevention of fibrotic disorders, including post-COVID-19 pulmonary fibrosis. Open Heart 2021; 8:openhrt-2021-001663. [PMID: 33879509 PMCID: PMC8061562 DOI: 10.1136/openhrt-2021-001663] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 03/30/2021] [Indexed: 12/14/2022] Open
Affiliation(s)
- James J DiNicolantonio
- Preventive Cardiology, Saint Luke's Mid America Heart Institute, Kansas City, Missouri, USA
| | | | | | - Simon Assanga
- Department of Research and Postgraduate Studies in Food, University of Sonora, Sonora, Mexico
| | | | - James H O'Keefe
- University of Missouri-Kansas City, Saint Lukes Mid America Heart Institute, Kansas City, Missouri, USA
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8
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Talebi M, Talebi M, Farkhondeh T, Mishra G, İlgün S, Samarghandian S. New insights into the role of the Nrf2 signaling pathway in green tea catechin applications. Phytother Res 2021; 35:3078-3112. [PMID: 33569875 DOI: 10.1002/ptr.7033] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Revised: 12/13/2020] [Accepted: 01/12/2021] [Indexed: 12/13/2022]
Abstract
Nuclear factor-erythroid 2-related factor 2 (Nrf2) is a transcriptional signaling pathway that plays a crucial role in numerous clinical complications. Pivotal roles of Nrf2 have been proved in cancer, autoimmune diseases, neurodegeneration, cardiovascular diseases, diabetes mellitus, renal injuries, respiratory conditions, gastrointestinal disturbances, and general disorders related to oxidative stress, inflammation, apoptosis, gelatinolysis, autophagy, and fibrogenesis processes. Green tea catechins as a rich source of phenolic compounds can deal with various clinical problems and manifestations. In this review, we attempted to focus on intervention between green tea catechins and Nrf2. Green tea catechins especially epigallocatechin gallate (EGCG) elucidated the protective role of Nrf2 and its downstream molecules in various disorders through Keap-1, HO-1, NQO-1, GPx, GCLc, GCLm, NF-kB cross-link, kinases, and apoptotic proteins. Subsequently, we compiled an updated expansions of the Nrf2 role as a gate to manage and protect different disorders and feasible indications of green tea catechins through this signaling pathway. The present review highlighted recent evidence-based data in silico, in vitro, and in vivo studies on an outline for future clinical trials.
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Affiliation(s)
- Marjan Talebi
- Department of Pharmacognosy and Pharmaceutical Biotechnology, School of Pharmacy, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mohsen Talebi
- Department of Chemistry and Biochemistry, University of Texas at Arlington, Arlington, Texas, USA.,Department of Research & Development, Viatris Pharmaceuticals Inc., San Antonio, Texas, USA
| | - Tahereh Farkhondeh
- Medical Toxicology and Drug Abuse Research Center (MTDRC), Birjand University of Medical Sciences, Birjand, Iran.,Faculty of Pharmacy, Birjand University of Medical Sciences, Birjand, Iran
| | - Gaurav Mishra
- Institute of Medical Sciences, Faculty of Ayurveda, Department of Medicinal Chemistry, Banaras Hindu University, Varanasi, India
| | - Selen İlgün
- Department of Pharmaceutical Botany, Faculty of Pharmacy, Erciyes University, Kayseri, Turkey
| | - Saeed Samarghandian
- Noncommunicable Diseases Research Center, Neyshabur University of Medical Sciences, Neyshabur, Iran
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9
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Clerici S, Boletta A. Role of the KEAP1-NRF2 Axis in Renal Cell Carcinoma. Cancers (Basel) 2020; 12:E3458. [PMID: 33233657 PMCID: PMC7699726 DOI: 10.3390/cancers12113458] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Revised: 11/13/2020] [Accepted: 11/18/2020] [Indexed: 12/12/2022] Open
Abstract
NRF2 is a transcription factor that coordinates the antioxidant response in many different tissues, ensuring cytoprotection from endogenous and exogenous stress stimuli. In the kidney, its function is essential in appropriate cellular response to oxidative stress, however its aberrant activation supports progression, metastasis, and resistance to therapies in renal cell carcinoma, similarly to what happens in other nonrenal cancers. While at the moment direct inhibitors of NRF2 are not available, understanding the molecular mechanisms that regulate its hyperactivation in specific tumor types is crucial as it may open new therapeutic perspectives. Here, we focus our attention on renal cell carcinoma, describing how NRF2 hyperactivation can contribute to tumor progression and chemoresistance. Furthermore, we highlight the mechanism whereby the many pathways that are generally altered in these tumors converge to dysregulation of the KEAP1-NRF2 axis.
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Affiliation(s)
| | - Alessandra Boletta
- IRCCS San Raffaele Scientific Institute, Molecular Basis of Cystic Kidney Diseases, Division of Genetics and Cell Biology, 20132 Milan, Italy;
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Zhou SS, Ai ZZ, Li WN, Li L, Zhu XY, Ba YM. Shenkang VII Recipe Attenuates Unilateral Ureteral Obstruction-induced Renal Fibrosis via TGF-β/Smad, NF-κB and SHH Signaling Pathway. Curr Med Sci 2020; 40:917-930. [PMID: 32980902 DOI: 10.1007/s11596-020-2255-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2019] [Accepted: 07/19/2020] [Indexed: 10/23/2022]
Abstract
This study aimed to explore the protective effects of the traditional Chinese Medicine formula Shenkang VII recipe (SK-7) on renal fibrosis and the mechanisms. Renal fibrosis was induced by unilateral ureteral obstruction (UUO) in rats. The rats were then divided into 5 groups: control group (Sham operation), UUO model group, UUO model plus low to high doses of SK-7 (0.5, 1.0, or 2.0 g/kg/day, for 14 days) groups. The animals were sacrificed on the 7th or 14th day. Kidney tissues were collected for histopathological examinations (hematoxylin and eosin and Masson's trichrome staining). Immunohistochemistry was used to detect the expression of collagen type III (Col III), fibronectin (FN), α-smooth muscle actin (α-SMA), TIMP metallopeptidase inhibitor 2 (TIMP2), matrix metallopeptidase 2 (MMP2), tumor necrosis factor-α (TNF-α), interleukin-1β (IL-1β) and monocyte chemotactic protein-1 (MCP-1). The TGF-β1/Smad, NF-kB and Sonic hedgehog signaling proteins were detected by Western blotting. Our results showed that SK-7 prevented UUO-induced renal injury and accumulation of collagen fibrils. Renal fibrosis biomarkers Col III, FN, α-SMA and TIMP2 were increased in the rats after UUO and decreased by SK-7, while MMP2 was upregulated after treatment. SK-7 also suppressed the levels of TNF-α, IL-1β and MCP-1 in UUO rats. In addition, SK-7 inhibited activation of the TGF-β/Smad, NF-κB and sonic hedgehog signaling (SHH) pathways. Taken together, these findings suggest that SK-7 may regulate the synthesis and degradation of extracellular matrix, reduce inflammation and suppress the proliferation of fibroblasts, by blocking the TGF-β1/Smad, NF-κB and SHH signaling pathways to exert its anti-renal fibrosis effect in UUO rats.
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Affiliation(s)
- Shan-Shan Zhou
- Hubei University of Chinese Medicine, Wuhan, 430065, China
| | - Zhong-Zhu Ai
- Hubei University of Chinese Medicine, Wuhan, 430065, China
| | - Wei-Nan Li
- Hubei Provincial Hospital of Traditional Chinese Medicine, Wuhan, 430061, China.,Hubei Provincial Academy of Traditional Chinese Medicine, Wuhan, 430061, China
| | - Liang Li
- Hubei University of Chinese Medicine, Wuhan, 430065, China
| | - Xiao-Yun Zhu
- Hubei University of Chinese Medicine, Wuhan, 430065, China
| | - Yuan-Ming Ba
- Hubei Provincial Hospital of Traditional Chinese Medicine, Wuhan, 430061, China. .,Hubei Provincial Academy of Traditional Chinese Medicine, Wuhan, 430061, China.
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11
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Sun B, Wang X, Liu X, Wang L, Ren F, Wang X, Leng X. Hippuric Acid Promotes Renal Fibrosis by Disrupting Redox Homeostasis via Facilitation of NRF2-KEAP1-CUL3 Interactions in Chronic Kidney Disease. Antioxidants (Basel) 2020; 9:antiox9090783. [PMID: 32854194 PMCID: PMC7555723 DOI: 10.3390/antiox9090783] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Revised: 08/16/2020] [Accepted: 08/21/2020] [Indexed: 12/24/2022] Open
Abstract
Chronic kidney disease (CKD) is characterized by the accumulation of protein-bound uremic toxins (PBUTs), which play a pathophysiological role in renal fibrosis (a common pathological process resulting in CKD progression). Accumulation of the PBUT hippuric acid (HA) is positively correlated with disease progression in CKD patients, suggesting that HA may promote renal fibrosis. Oxidative stress is the most important factor affecting PBUTs nephrotoxicity. Herein, we assessed the ability of HA to promote kidney fibrosis by disrupting redox homeostasis. In HK-2 cells, HA increased fibrosis-related gene expression, extracellular matrix imbalance, and oxidative stress. Additionally, reactive oxygen species (ROS)-mediated TGFβ/SMAD signaling contributed to HA-induced fibrotic responses. HA disrupted antioxidant networks by decreasing the levels of nuclear factor erythroid 2-related factor 2 (NRF2), leading to ROS accumulation and fibrotic responses, as evidenced by NRF2 activation and knockdown. Moreover, NRF2 levels were reduced by NRF2 ubiquitination, which was regulated via increased interactions of Kelch-like ECH-associated protein 1 with Cullin 3 and NRF2. Finally, renal fibrosis and redox imbalance promoted by HA were confirmed in rats. Importantly, sulforaphane (NRF2 activator) reversed HA-promoted renal fibrosis. Thus, HA promotes renal fibrosis in CKD by disrupting NRF2-driven antioxidant system, indicating that NRF2 is a potential therapeutic target for CKD.
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Affiliation(s)
- Bowen Sun
- Key Laboratory of Precision Nutrition and Food Quality, Key Laboratory of Functional Dairy, Ministry of Education, College of Food Science & Nutritional Engineering, China Agricultural University, Beijing 100083, China; (B.S.); (X.W.); (X.L.); (L.W.); (F.R.)
| | - Xifan Wang
- Key Laboratory of Precision Nutrition and Food Quality, Key Laboratory of Functional Dairy, Ministry of Education, College of Food Science & Nutritional Engineering, China Agricultural University, Beijing 100083, China; (B.S.); (X.W.); (X.L.); (L.W.); (F.R.)
| | - Xiaoxue Liu
- Key Laboratory of Precision Nutrition and Food Quality, Key Laboratory of Functional Dairy, Ministry of Education, College of Food Science & Nutritional Engineering, China Agricultural University, Beijing 100083, China; (B.S.); (X.W.); (X.L.); (L.W.); (F.R.)
| | - Longjiao Wang
- Key Laboratory of Precision Nutrition and Food Quality, Key Laboratory of Functional Dairy, Ministry of Education, College of Food Science & Nutritional Engineering, China Agricultural University, Beijing 100083, China; (B.S.); (X.W.); (X.L.); (L.W.); (F.R.)
| | - Fazheng Ren
- Key Laboratory of Precision Nutrition and Food Quality, Key Laboratory of Functional Dairy, Ministry of Education, College of Food Science & Nutritional Engineering, China Agricultural University, Beijing 100083, China; (B.S.); (X.W.); (X.L.); (L.W.); (F.R.)
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Food Science & Nutritional Engineering, China Agricultural University, Beijing 100083, China
| | - Xiaoyu Wang
- Key Laboratory of Precision Nutrition and Food Quality, Key Laboratory of Functional Dairy, Ministry of Education, College of Food Science & Nutritional Engineering, China Agricultural University, Beijing 100083, China; (B.S.); (X.W.); (X.L.); (L.W.); (F.R.)
- Correspondence: (X.W.); (X.L.); Tel.: +86-10-6273-8589 (X.W.); +86-10-6273-7761 (X.L.)
| | - Xiaojing Leng
- Key Laboratory of Precision Nutrition and Food Quality, Key Laboratory of Functional Dairy, Ministry of Education, College of Food Science & Nutritional Engineering, China Agricultural University, Beijing 100083, China; (B.S.); (X.W.); (X.L.); (L.W.); (F.R.)
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Food Science & Nutritional Engineering, China Agricultural University, Beijing 100083, China
- Correspondence: (X.W.); (X.L.); Tel.: +86-10-6273-8589 (X.W.); +86-10-6273-7761 (X.L.)
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12
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Wang YJ, Chen YY, Hsiao CM, Pan MH, Wang BJ, Chen YC, Ho CT, Huang KC, Chen RJ. Induction of Autophagy by Pterostilbene Contributes to the Prevention of Renal Fibrosis via Attenuating NLRP3 Inflammasome Activation and Epithelial-Mesenchymal Transition. Front Cell Dev Biol 2020; 8:436. [PMID: 32582712 PMCID: PMC7283393 DOI: 10.3389/fcell.2020.00436] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Accepted: 05/08/2020] [Indexed: 12/15/2022] Open
Abstract
Chronic kidney disease (CKD) is recognized as a global public health problem. NLRP3 inflammasome activation has been characterized to mediate diverse aspect mechanisms of CKD through regulation of proinflammatory cytokines, tubulointerstitial injury, glomerular diseases, renal inflammation, and fibrosis pathways. Autophagy is a characterized negative regulation mechanism in the regulation of the NLRP3 inflammasome, which is now recognized as the key regulator in the pathogenesis of inflammation and fibrosis in CKD. Thus, autophagy is undoubtedly an attractive target for developing new renal protective treatments of kidney disease via its potential effects in regulation of inflammasome. However, there is no clinical useful agent targeting the autophagy pathway for patients with renal diseases. Pterostilbene (PT, trans-3,5-dimethoxy-4-hydroxystilbene) is a natural analog of resveratrol that has various health benefits including autophagy inducing effects. Accordingly, we aim to investigate underlying mechanisms of preventive and therapeutic effects of PT by reducing NLRP3 inflammasome activation and fibrosis through autophagy-inducing effects. The renal protective effects of PT were evaluated by potassium oxonate (PO)-induced hyperuricemia and high adenine diet-induced CKD models. The autophagy induction mechanisms and anti-fibrosis effects of PT by down-regulation of NLRP3 inflammasome are investigated by using immortalized rat kidney proximal tubular epithelial NRK-52E cells. To determine the role of autophagy induction in the alleviating of NLRP3 inflammasome activation and epithelial-mesenchymal transition (EMT), NRK-52E with Atg5 knockdown [NRK-Atg5-(2)] cells were applied in the study. The results indicated that PT significantly reduces serum uric acid levels, liver xanthine oxidase activity, collagen accumulation, macrophage recruitment, and renal fibrosis in CKD models. At the molecular levels, pretreatment with PT downregulating TGF-β-triggered NLRP3 inflammasome activation, and subsequent EMT in NRK-52E cells. After blockage of autophagy by treatment of Atg5 shRNA, PT loss of its ability to prevent NLRP3 inflammasome activation and EMT. Taken together, we suggested the renal protective effects of PT in urate nephropathy and proved that PT induces autophagy leading to restraining TGF-β-mediated NLRP3 inflammasome activation and EMT. This study is also the first one to provide a clinical potential application of PT for a better management of CKD through its autophagy inducing effects.
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Affiliation(s)
- Ying-Jan Wang
- Department of Environmental and Occupational Health, College of Medicine, National Cheng Kung University, Tainan, Taiwan.,Department of Medical Research, China Medical University Hospital, China Medical University, Taichung, Taiwan
| | - Yu-Ying Chen
- Department of Environmental and Occupational Health, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Ching-Mao Hsiao
- Department of Environmental and Occupational Health, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Min-Hsiung Pan
- Institute of Food Science and Technology, National Taiwan University, Taipei, Taiwan
| | - Bour-Jr Wang
- Department of Environmental and Occupational Health, College of Medicine, National Cheng Kung University, Tainan, Taiwan.,Department of Occupational and Environmental Medicine, National Cheng Kung University Hospital, Tainan, Taiwan.,Department of Cosmetic Science and Institute of Cosmetic Science, Chia Nan University of Pharmacy and Science, Tainan, Taiwan
| | - Yu-Chi Chen
- Department of Biotechnology, National Kaohsiung Normal University, Kaohsiung, Taiwan
| | - Chi-Tang Ho
- Department of Food Science, Rutgers University, New Brunswick, NJ, United States
| | - Kuo-Ching Huang
- Department of Environmental and Occupational Health, College of Medicine, National Cheng Kung University, Tainan, Taiwan.,Division of Nephrology, Department of Internal Medicine, Chi Mei Hospital, Tainan, Taiwan
| | - Rong-Jane Chen
- Department of Food Safety/Hygiene and Risk Management, College of Medicine, National Cheng Kung University, Tainan, Taiwan
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13
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Dao T, Salahuddin S, Charfi C, Sicard AA, Jenabian MA, Annabi B. Pharmacological targeting of neurotensin response by diet-derived EGCG in macrophage-differentiated HL-60 promyelocytic leukemia cells. PHARMANUTRITION 2020. [DOI: 10.1016/j.phanu.2020.100191] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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14
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Epigallocatechin-3-gallate prevents TGF-β1-induced epithelial-mesenchymal transition and fibrotic changes of renal cells via GSK-3β/β-catenin/Snail1 and Nrf2 pathways. J Nutr Biochem 2020; 76:108266. [DOI: 10.1016/j.jnutbio.2019.108266] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2019] [Revised: 08/28/2019] [Accepted: 11/03/2019] [Indexed: 11/20/2022]
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15
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Zhu QQ, Yang XY, Zhang XJ, Yu CJ, Pang QQ, Huang YW, Wang XJ, Sheng J. EGCG targeting Notch to attenuate renal fibrosisviainhibition of TGFβ/Smad3 signaling pathway activation in streptozotocin-induced diabetic mice. Food Funct 2020; 11:9686-9695. [DOI: 10.1039/d0fo01542c] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
EGCG may improve renal fibrosis by targeting Notchviainhibition of the TGFβ/Smad3 pathway in diabetic mice.
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Affiliation(s)
- Qiang-Qiang Zhu
- Key Laboratory of Pu-er Tea Science
- Ministry of Education
- Yunnan Agricultural University
- Kunming
- China
| | - Xiao-Ying Yang
- Key Laboratory of Pu-er Tea Science
- Ministry of Education
- Yunnan Agricultural University
- Kunming
- China
| | - Xiao-Juan Zhang
- Key Laboratory of Pu-er Tea Science
- Ministry of Education
- Yunnan Agricultural University
- Kunming
- China
| | - Cai-Jun Yu
- Key Laboratory of Pu-er Tea Science
- Ministry of Education
- Yunnan Agricultural University
- Kunming
- China
| | - Qian-Qian Pang
- Key Laboratory of Pu-er Tea Science
- Ministry of Education
- Yunnan Agricultural University
- Kunming
- China
| | - Ye-wei Huang
- Key Laboratory of Pu-er Tea Science
- Ministry of Education
- Yunnan Agricultural University
- Kunming
- China
| | - Xuan-jun Wang
- Key Laboratory of Pu-er Tea Science
- Ministry of Education
- Yunnan Agricultural University
- Kunming
- China
| | - Jun Sheng
- Key Laboratory of Pu-er Tea Science
- Ministry of Education
- Yunnan Agricultural University
- Kunming
- China
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16
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Kanlaya R, Thongboonkerd V. Molecular Mechanisms of Epigallocatechin-3-Gallate for Prevention of Chronic Kidney Disease and Renal Fibrosis: Preclinical Evidence. Curr Dev Nutr 2019; 3:nzz101. [PMID: 31555758 PMCID: PMC6752729 DOI: 10.1093/cdn/nzz101] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Accepted: 08/28/2019] [Indexed: 02/07/2023] Open
Abstract
Chronic kidney disease (CKD) is a common public health problem worldwide characterized by gradual decline of renal function over months/years accompanied by renal fibrosis and failure in tissue wound healing after sustained injury. Patients with CKD frequently present with profound signs/symptoms that require medical treatment, mostly culminating in hemodialysis and renal transplantation. To prevent CKD more efficiently, there is an urgent need for better understanding of the pathogenic mechanisms and molecular pathways of the disease pathogenesis and progression, and for developing novel therapeutic targets. Recently, several lines of evidence have shown that epigallocatechin-3-gallate (EGCG), an abundant phytochemical polyphenol derived from Camellia sinensis, might be a promising bioactive compound for prevention of CKD development/progression. This review summarizes current knowledge of molecular mechanisms underlying renoprotective roles of EGCG in CKD based on available preclinical evidence (from both in vitro and in vivo animal studies), particularly its antioxidant property through preservation of mitochondrial function and activation of Nrf2 (nuclear factor erythroid 2-related factor 2)/HO-1 (heme oxygenase-1) signaling, anti-inflammatory activity, and protective effect against epithelial mesenchymal transition. Finally, future perspectives, challenges, and concerns regarding its clinical use in CKD and renal fibrosis are discussed.
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Affiliation(s)
- Rattiyaporn Kanlaya
- 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
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17
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Li T, Zhao N, Lu J, Zhu Q, Liu X, Hao F, Jiao X. Epigallocatechin gallate (EGCG) suppresses epithelial-Mesenchymal transition (EMT) and invasion in anaplastic thyroid carcinoma cells through blocking of TGF-β1/Smad signaling pathways. Bioengineered 2019; 10:282-291. [PMID: 31311401 PMCID: PMC6650192 DOI: 10.1080/21655979.2019.1632669] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Transforming growth factor (TGF)-β1 plays a crucial role in the epithelial-to-mesenchymal transition (EMT) in many cancer types and in thyroid cancers. Epigallocatechin-3-gallate (EGCG), the most important ingredient in the green tea, has been reported to possess antioxidant and anticancer activities. However, the cellular and molecular mechanisms explaining its action have not been completely understood. In this study, we found that EGCG significantly suppresses EMT, invasion and migration in anaplastic thyroid carcinoma (ATC) 8505C cells in vitro by regulating the TGF-β/Smad signaling pathways. EGCG significantly inhibited TGF-β1-induced expression of EMT markers (E-cadherin reduction and vimentin induction) in 8505C cells in vitro. Treatment with EGCG completely blocked the phosphorylation of Smad2/3, translocation of Smad4. Taken together, these results suggest that EGCG suppresses EMT and invasion and migration by blocking TGFβ/Smad signaling pathways.
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Affiliation(s)
- Tingting Li
- a Department of Endocrinology , Linyi Central Hospital, Linyi , Yishui , Shandong , China
| | - Ning Zhao
- b Department of Thyroid Surgery , The Affiliated Hospital of Qingdao University , Qingdao , Shandong , China
| | - Jie Lu
- b Department of Thyroid Surgery , The Affiliated Hospital of Qingdao University , Qingdao , Shandong , China
| | - Qingli Zhu
- b Department of Thyroid Surgery , The Affiliated Hospital of Qingdao University , Qingdao , Shandong , China
| | - Xinfeng Liu
- c Department of Nuclear Medicine , The Affiliated Hospital of Qingdao University , Qingdao , Shandong , China
| | - Fengyun Hao
- d Department of Pathology , The Affiliated Hospital of Qingdao University , Qingdao , Shandong , China
| | - Xuelong Jiao
- e Department of General surgery , The Affiliated Hospital of Qingdao University , Qingdao , Shandong , China
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18
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Wang J, Zhu H, Huang L, Zhu X, Sha J, Li G, Ma G, Zhang W, Gu M, Guo Y. Nrf2 signaling attenuates epithelial-to-mesenchymal transition and renal interstitial fibrosis via PI3K/Akt signaling pathways. Exp Mol Pathol 2019; 111:104296. [PMID: 31449784 DOI: 10.1016/j.yexmp.2019.104296] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2019] [Revised: 07/10/2019] [Accepted: 08/12/2019] [Indexed: 02/07/2023]
Abstract
BACKGROUND Nrf2 constitutes a therapeutic reference point for renal fibrosis and chronic kidney diseases. Nrf2-related signaling pathways are recognized to temper endothelial-to-mesenchymal transition (EMT) in fibrotic tissue. Nevertheless, the mechanism by which Nrf2 mitigates renal interstitial fibrosis is imprecise. METHODS The relationship between Nrf2 and renal interstitial fibrosis was investigated using the unilateral ureteral obstruction (UUO) model of Nrf2-/- mice. The mice were separated into four groups, based on the treatment and intervention: Nrf2-/- + UUO, Nrf2-/- + Sham, WT + UUO and WT + Sham. Histological examination of renal tissue following the hematoxylin-eosin and Masson staining was carried out, as well as immunohistochemical staining. Additionally, to confirm the in vivo discoveries, in vitro experiments with HK-2 cells were also performed. RESULTS The Nrf2-/- + UUO group showed more severe renal interstitial fibrosis compared to the WT + UUO, Nrf2-/- + Sham and WT + Sham groups. Furthermore, the manifestations of α-SMA and Fibronectin significantly increased, and the manifestation of E-cadherin considerably decreased in kidney tissues from the group of Nrf2-/- + UUO, compared to the WT + UUO group. The Nrf2 protein level significantly decreased in HK-2 cells, in reaction to the TGF-β1 concentration. In addition, the overexpression of Nrf2 presented contradictory results. What is more, the PI3K/Akt signaling pathway was discovered to be activated in the proteins extracted from cultured cells, and treated with Nrf2 siRNA and kidney tissues from the Nrf2-/- + UUO group. CONCLUSIONS The results we obtained demonstrate that Nrf2 signaling pathway may perhaps offset the development of EMT, prompted by TGF-β1 and renal interstitial fibrosis. Likewise, the anti-fibrotic effect of Nrf2 was imparted by the inactivation of PI3K/Akt signaling. From our discoveries, we deliver new insight related to the prevention and treatment of kidney fibrosis.
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Affiliation(s)
- Jun Wang
- Department of Urology, Children's Hospital of Nanjing Medical University, Nanjing 210008, China
| | - Haobo Zhu
- Department of Urology, Children's Hospital of Nanjing Medical University, Nanjing 210008, China
| | - Liqu Huang
- Department of Urology, Children's Hospital of Nanjing Medical University, Nanjing 210008, China
| | - Xiaojiang Zhu
- Department of Urology, Children's Hospital of Nanjing Medical University, Nanjing 210008, China
| | - Jintong Sha
- Department of Urology, Children's Hospital of Nanjing Medical University, Nanjing 210008, China
| | - Guogen Li
- Department of Urology, Children's Hospital of Nanjing Medical University, Nanjing 210008, China
| | - Geng Ma
- Department of Urology, Children's Hospital of Nanjing Medical University, Nanjing 210008, China
| | - Wei Zhang
- Department of Urology, The First Affiliated Hospital with Nanjing Medical University, Nanjing 210029, China
| | - Min Gu
- Department of Urology, The First Affiliated Hospital with Nanjing Medical University, Nanjing 210029, China.
| | - Yunfei Guo
- Department of Urology, Children's Hospital of Nanjing Medical University, Nanjing 210008, China.
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19
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Chen RR, Fan XH, Chen G, Zeng GW, Xue YG, Liu XT, Wang CY. Irisin attenuates angiotensin II-induced cardiac fibrosis via Nrf2 mediated inhibition of ROS/ TGFβ1/Smad2/3 signaling axis. Chem Biol Interact 2019; 302:11-21. [PMID: 30703374 DOI: 10.1016/j.cbi.2019.01.031] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2018] [Revised: 01/10/2019] [Accepted: 01/26/2019] [Indexed: 12/13/2022]
Abstract
Angiotensin II-related cardiac fibrosis is one of the key pathological changes of the hypertrophied left ventricle in various heart disease. Irisin was recently reported to confer cardio-protective and anti-oxidative effects, while whether it can reverse the renin-angiotensin-aldosterone system(RAAS) activation related(angiotensin II-induced) cardiac fibrosis is unknown. In this study, we found that angiotensin II-induced cardiac dysfunction and fibrotic responses were dampened by irisin treatment in mice. Mechanistically, angiotensin II induced robust ROS generation, which in turn triggered activation of pro-fibrotic TGFβ1-Smad2/3 signaling and subsequent collagen synthesis and fibroblast-myofibroblast transformation in cardiac fibroblasts. In contrast, Irisin treatment suppressed angiotensin II-induced ROS generation, TGFβ1 activation, collagen synthesis and fibroblast-myofibroblast transformation, the effects of which was accompanied by Nrf2 activation and also abolished by a Nrf2 targeted siRNA. Taken together, we here identified irisin as a promising anti-fibrotic therapeutic for angiotensin II-related cardiac fibrosis.
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Affiliation(s)
- Rui-Rui Chen
- Department of Cardiology, Second Affiliated Hospital of Air Forced Military Medical University, Xi'an, Shaanxi Province, 710068, China; Department of Cardiology, Tangdu Hospital, Fourth Military Medical University, Xi'an, Shaanxi Province, 710068, China
| | - Xue-Hui Fan
- Department of Cardiology, Southwest Medical University, Luzhou, Sichuan Province, 646000, China
| | - Gang Chen
- Department of Cardiac Surgery, Second Affiliated Hospital of Lanzhou University, Lanzhou, Gansu Province, 730000, China
| | - Guang-Wei Zeng
- Department of Cardiology, Second Affiliated Hospital of Air Forced Military Medical University, Xi'an, Shaanxi Province, 710068, China; Department of Cardiology, Tangdu Hospital, Fourth Military Medical University, Xi'an, Shaanxi Province, 710068, China
| | - Yu-Gang Xue
- Department of Cardiology, Second Affiliated Hospital of Air Forced Military Medical University, Xi'an, Shaanxi Province, 710068, China; Department of Cardiology, Tangdu Hospital, Fourth Military Medical University, Xi'an, Shaanxi Province, 710068, China
| | - Xiong-Tao Liu
- Department of Cardiology, Second Affiliated Hospital of Air Forced Military Medical University, Xi'an, Shaanxi Province, 710068, China; Department of Cardiology, Tangdu Hospital, Fourth Military Medical University, Xi'an, Shaanxi Province, 710068, China
| | - Chi-Yao Wang
- Department of Cardiology, Second Affiliated Hospital of Air Forced Military Medical University, Xi'an, Shaanxi Province, 710068, China; Department of Cardiology, Tangdu Hospital, Fourth Military Medical University, Xi'an, Shaanxi Province, 710068, China.
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20
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Kanlaya R, Thongboonkerd V. Protective Effects of Epigallocatechin-3-Gallate from Green Tea in Various Kidney Diseases. Adv Nutr 2019; 10:112-121. [PMID: 30615092 PMCID: PMC6370267 DOI: 10.1093/advances/nmy077] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Accepted: 09/12/2018] [Indexed: 12/12/2022] Open
Abstract
Kidney diseases are common health problems worldwide. Various etiologies (e.g., diabetes, hypertension, drug-induced nephrotoxicity, infection, cancers) can affect renal function and ultimately lead to development of chronic kidney disease (CKD) and end-stage renal disease (ESRD). The global rise in number of CKD/ESRD patients during recent years has led to tremendous concern to look for effective strategies to prevent or slow progression of CKD and ESRD. Natural compounds derived from herbs or medicinal plants have gained wide attention for scientific scrutiny to achieve such goals. One of such natural compounds that has been extensively investigated is epigallocatechin-3-gallate (EGCG), a major polyphenol found in the tea plant (Camellia sinensis). A growing body of recent evidence has shown that EGCG may be a promising therapeutic or protective agent in various kidney diseases. This article thus highlights recent progress in medical research on beneficial effects of EGCG against a broad spectrum of kidney diseases, including acute kidney injury, cisplatin-induced nephrotoxicity, kidney stone disease, glomerulonephritis, lupus nephritis, renal cell carcinoma, diabetic nephropathy, CKD, and renal fibrosis. The renoprotective mechanisms are also detailed. Finally, future perspectives of medical research on EGCG and its potential use in clinical practice for treatment and prevention of kidney diseases are discussed.
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Affiliation(s)
- Rattiyaporn Kanlaya
- 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,Address correspondence to VT (e-mail: or )
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21
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Li S, Xiao X, Han L, Wang Y, Luo G. Renoprotective effect of Zhenwu decoction against renal fibrosis by regulation of oxidative damage and energy metabolism disorder. Sci Rep 2018; 8:14627. [PMID: 30279506 PMCID: PMC6168532 DOI: 10.1038/s41598-018-32115-9] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2018] [Accepted: 07/02/2018] [Indexed: 12/27/2022] Open
Abstract
Zhenwu decoction (ZWD) is a promising traditional Chinese prescription against renal fibrosis, while its underlying mechanism remains unclear. Rat model of renal fibrosis were established and divided into control group, model group, ZWD treatment group and enalapril maleate treatment group. Metabolic profiles on serum samples from each group were acquired by using ultra performance liquid chromatography coupled with quadrupole time-of-flight high-resolution mass spectrometry. Metabolomics combined with molecular biology were comparatively conducted on samples of various groups. Fifteen potential biomarkers were identified and these biomarkers are mainly phospholipids and fatty acids. The results showed renal fibrosis was associated with oxidative damage and energy metabolism disorder. The results of histopathology, biochemistry and metabolomics demonstrated that ZWD exhibited an efficient renoprotective effect by alleviating oxidative stress, increasing energy metabolism and regulating fibrotic cytokines. This study provided scientific support for the research and development of new drugs from traditional Chinese medicine.
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Affiliation(s)
- Shasha Li
- Guangdong Provincial Hospital of Chinese Medicine, No. 111 Dade Road, Guangzhou, Guangdong, 510120, China
| | - Xue Xiao
- Guangdong Metabolic Diseases Research Center of Integrated Chinese and Western Medicine, Guangdong Pharmaceutical University, Guangzhou, 510006, China
| | - Ling Han
- Guangdong Provincial Hospital of Chinese Medicine, No. 111 Dade Road, Guangzhou, Guangdong, 510120, China.
| | - Yiming Wang
- Guangdong Provincial Hospital of Chinese Medicine, No. 111 Dade Road, Guangzhou, Guangdong, 510120, China.,Department of Chemistry, Tsinghua University, No. 30 Shuangqing Road in Haidian Distric, Beijing, 100084, China
| | - Guoan Luo
- Guangdong Provincial Hospital of Chinese Medicine, No. 111 Dade Road, Guangzhou, Guangdong, 510120, China. .,Department of Chemistry, Tsinghua University, No. 30 Shuangqing Road in Haidian Distric, Beijing, 100084, China.
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22
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Chen DQ, Feng YL, Cao G, Zhao YY. Natural Products as a Source for Antifibrosis Therapy. Trends Pharmacol Sci 2018; 39:937-952. [PMID: 30268571 DOI: 10.1016/j.tips.2018.09.002] [Citation(s) in RCA: 149] [Impact Index Per Article: 24.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2018] [Revised: 08/29/2018] [Accepted: 09/04/2018] [Indexed: 01/15/2023]
Abstract
Although fibrosis is a final pathological feature of many chronic diseases, few interventions are available that specifically target the pathogenesis of fibrosis. Natural products are becoming increasingly recognized as effective therapies for fibrosis. The highlights of common cellular and molecular mechanisms of fibrosis facilitate the discovery of effective antifibrotic drugs. We describe some new profibrotic mechanisms and corresponding therapeutic targets using natural products. Interleukin, ephrin-B2, Gas6/TAM, Wnt/β-catenin, hedgehog pathway, PPARγ, lysophosphatidic acid, and CTGF are promising therapeutic targets. Natural products can target these mediators and inhibit chronic inflammation, myofibroblast activation, epithelial-mesenchymal transition, and extracellular matrix accumulation to alleviate fibrosis. Of note, natural products have the potential to inhibit fibrosis in one organ, simultaneously targeting fibrosis in multiple other organs, which provides us new strategies to find antifibrotic drugs.
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Affiliation(s)
- Dan-Qian Chen
- School of Life Science, Northwest University, No. 229 Taibai North Road, Xi'an, Shaanxi 710069, China
| | - Ya-Long Feng
- School of Life Science, Northwest University, No. 229 Taibai North Road, Xi'an, Shaanxi 710069, China
| | - Gang Cao
- School of Pharmacy, Zhejiang Chinese Medical University, No. 548 Binwen Road, Hangzhou, Zhejiang 310053, China
| | - Ying-Yong Zhao
- School of Life Science, Northwest University, No. 229 Taibai North Road, Xi'an, Shaanxi 710069, China.
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23
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Establishing a Cell-Based High-Content Screening Assay for TCM Compounds with Anti-Renal Fibrosis Effects. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2018; 2018:7942614. [PMID: 30050593 PMCID: PMC6046160 DOI: 10.1155/2018/7942614] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/21/2018] [Accepted: 04/30/2018] [Indexed: 12/26/2022]
Abstract
Renal fibrosis is thought to be the final common pathway leading to chronic kidney disease (CKD) and end-stage renal failure. Except for renal replacement therapy, no adequate treatment regimen is available; therefore studies on the treatment of renal fibrosis have attracted significant interest. In recent years, studies have shown that traditional Chinese medicine (TCM) may represent an attractive source to produce drugs with antifibrosis effects. The aim of this study was to establish a robust cell-based high-content screening (HCS) approach to identify TCM compounds with antifibrosis effects in NRK49F cells following TGF-β1 exposure. When designing the model, one of the most important steps involved the stability and reproducibility of this cell-based model. Therefore, we initially optimized the experimental parameters. Then, our HCS model was validated using SB525334, an inhibitor of the TGF-β1 receptor, and curcumin and emodin, two TCM compounds with well-documented anti-renal fibrosis activity. Subsequently, the proven reliable HCS model was used to screen a standard TCM compound library, which included 344 TCM molecules. Based on our HCS algorithm, a total of 16 compounds were identified to have prospective inhibitory activity. These compounds were further validated by verification experiments. Strikingly, eight compounds have been shown to inhibit renal fibrosis; six of them had rarely been described in the literature, namely, Ligustrazine, Glycyrrhizic acid, Astragaloside iv, Hydroxysafflor Yellow A, Crocin, and Gypenosides. To the best of our knowledge, this is the first study in which a HCS assay was performed to identify TCM compounds with anti-renal fibrosis effects. The HCS approach was successfully applied to screen active compounds and will be propitious to further anti-renal fibrosis drugs discovery research. Meanwhile, it may offer possibilities for identifying lead compounds for treating other diseases from registered Chinese herbal medicines.
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Chen L, Yang T, Lu DW, Zhao H, Feng YL, Chen H, Chen DQ, Vaziri ND, Zhao YY. Central role of dysregulation of TGF-β/Smad in CKD progression and potential targets of its treatment. Biomed Pharmacother 2018. [DOI: 10.1016/j.biopha.2018.02.090] [Citation(s) in RCA: 235] [Impact Index Per Article: 39.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
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25
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Epigallocatechin-3-gallate inhibits inflammation and epithelial‑mesenchymal transition through the PI3K/AKT pathway via upregulation of PTEN in asthma. Int J Mol Med 2017; 41:818-828. [PMID: 29207033 PMCID: PMC5752157 DOI: 10.3892/ijmm.2017.3292] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2016] [Accepted: 10/25/2017] [Indexed: 02/07/2023] Open
Abstract
Asthma is a chronic disease associated with hyper-responsiveness, obstruction and remodeling of the airways. Epithelial-mesenchymal transition (EMT) has an important role in these alterations and may account for the accumulation of subepithelial mesenchymal cells, thus contributing to airway hyperresponsiveness and remodeling. Epigallo-catechin-3-gallate (EGCG), which is a type of polyphenol, is the most potent ingredient in green tea, and exhibits antibacterial, antiviral, antioxidative, anticancer and chemopreventive activities. Recently, numerous studies have investigated the protective effects of EGCG against asthma and other lung diseases. In the present study, the role of EGCG in ovalbumin (OVA)-challenged asthmatic mice was determined. In addition, the inhibitory effects of EGCG against transforming growth factor (TGF)-β1-induced EMT and migration of 16HBE cells, and the underlying mechanisms of the phosphatidylinositol 3-kinase/protein kinase B (PI3K/AKT) signaling pathway, were investigated by immunofluorescence, Transwell, wound healing assay and western blot analysis, respectively. The results indicated that EGCG may suppress inflammation and inflammatory cell infiltration into the lungs of OVA-challenged asthmatic mice, and may also inhibit EMT via the PI3K/AKT signaling pathway through upregulating the expression of phosphatase and tensin homolog (PTEN) in vivo and in vitro. The present study also revealed the anti-migratory effects of EGCG in TGF-β1-induced 16HBE cells, thus suggesting it may reduce airway remodeling. The present study provides a novel insight into understanding the protective effects of EGCG on airway remodeling in asthma, and indicates that EGCG may be useful as an adjuvant therapy for bronchial asthma.
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Zhu YC, Wang YK, Bai SJ, Zha FF, Feng G, Gao CP, Liu J. Suppression of CIP4/Par6 attenuates TGF-β1-induced epithelial-mesenchymal transition in NRK-52E cells. Int J Mol Med 2017; 40:1165-1171. [PMID: 28848997 PMCID: PMC5593455 DOI: 10.3892/ijmm.2017.3100] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2016] [Accepted: 08/01/2017] [Indexed: 11/19/2022] Open
Abstract
Transforming growth factor-β (TGF-β) induces epithelial-mesenchymal transition (EMT) primarily via a Smad-dependent mechanism. However, there are few studies available on TGF-β-induced EMT through the activation of non-canonical pathways. In this study, the Cdc42-interacting protein-4 (CIP4)/partitioning-defective protein 6 (Par6) pathway was investigated in TGF-β1-stimulated NRK-52E cells. Rat NRK-52E cells were obtained and stimulated with TGF-β1. The expression levels of E-cadherin, α-smooth muscle actin (α-SMA) and CIP4 were then examined by western blot analyses. Rat NRK-52E cells were transfected with Par6 or CIP4 small interfering RNA (siRNA), and scrambled siRNA as controls. The cells were incubated with 20 ng/ml of TGF-β1 for 72 h in order to observe the effects of Par6 and CIP4 silencing. Confocal fluorescence microscopy was also applied to reveal the expression and distribution of E-cadherin, α-SMA, Par6 and CIP4. The results demonstrated that E-cadherin expression was decreased, and α-SMA expression was increased in the TGF-β1-stimulated cells. Simultaneously, the increased expression of CIP4 and p-Par6 was confirmed by western blot analyses. The results of confocal fluorescence microscopy revealed that rat CIP4 exhibited cluster formations located adjacent to the cell periphery; however, as for the protein expression and distribution of Par6, there was no obvious difference between the control cells and cells exposed to TGF-β1. siRNA molecules capable of CIP4 and Par6 knockdown were used to demonstrate reversed TGF-β1-induced EMT. Moreover, CIP4 loss of function reversed the increase in p-Par6 protein expression in the TGF-β1-stimulated NRK-52E cells. A similar result was observed with the decreased CIP4 protein expression due to Par6 loss of function. Our data thus suggest that the CIP4/Par6 complex plays an important role in the occurrence of EMT in TGF-β1-stimulated NRK-52E cells. The underlying mechanisms are mediated, at least in part, through the upregulation of CIP4, which occurrs due to stimulation with TGF-β1; subsequently, CIP4 increases the phosphorylation of Par6, which accelerates the process of EMT.
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Affiliation(s)
- Ying-Chun Zhu
- Zhongshan Hospital Qingpu Branch, Fudan University, Shanghai 201700, P.R. China
| | - Ya-Kun Wang
- Zhongshan Hospital Qingpu Branch, Fudan University, Shanghai 201700, P.R. China
| | - Shou-Jun Bai
- Zhongshan Hospital Qingpu Branch, Fudan University, Shanghai 201700, P.R. China
| | - Fang-Fang Zha
- Zhongshan Hospital Qingpu Branch, Fudan University, Shanghai 201700, P.R. China
| | - Gang Feng
- Zhongshan Hospital Qingpu Branch, Fudan University, Shanghai 201700, P.R. China
| | - Cong-Pu Gao
- Zhongshan Hospital Qingpu Branch, Fudan University, Shanghai 201700, P.R. China
| | - Juan Liu
- Zhongshan Hospital Qingpu Branch, Fudan University, Shanghai 201700, P.R. China
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Zhou W, Mo X, Cui W, Zhang Z, Li D, Li L, Xu L, Yao H, Gao J. Nrf2 inhibits epithelial-mesenchymal transition by suppressing snail expression during pulmonary fibrosis. Sci Rep 2016; 6:38646. [PMID: 27982105 PMCID: PMC5159829 DOI: 10.1038/srep38646] [Citation(s) in RCA: 69] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2016] [Accepted: 11/10/2016] [Indexed: 12/17/2022] Open
Abstract
Epithelial-mesenchymal transition (EMT) is a phenotype conversion that plays a critical role in the development of pulmonary fibrosis (PF). It is known that snail could regulate the progression of EMT. Nuclear factor erythroid 2 related factor 2 (Nrf2), a key regulator of antioxidant defense system, protects cells against oxidative stress. However, it is not known whether Nrf2 regulates snail thereby modulating the development of PF. Here, bleomycin (BLM) was intratracheally injected into both Nrf2-knockout (Nrf2-/-) and wild-type mice to compare the development of PF. Rat type II alveolar epithelial cells (RLE-6TN) were treated with a specific Nrf2 activator sulforaphane, or transfected with Nrf2 and snail siRNAs to determine their effects on transforming growth factor β1 (TGF-β1)-induced EMT. We found that BLM-induced EMT and lung fibrosis were more severe in Nrf2-/- mice compared to wild-type mice. In vitro, sulforaphane treatment attenuated TGF-β1-induced EMT, accompanied by the down-regulation of snail. Inversely, silencing Nrf2 by siRNA enhanced TGF-β1-induced EMT along with increased expression of snail. Interestingly, when snail was silenced by siRNA, sulforaphane treatment was unable to reduce the progression of EMT in RLE-6TN cells. These findings suggest that Nrf2 attenuates EMT and fibrosis process by regulating the expression of snail in PF.
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Affiliation(s)
- Wencheng Zhou
- School of Pharmacy, Anhui Medical University, Hefei, Anhui, 230032, China
| | - Xiaoting Mo
- School of Pharmacy, Anhui Medical University, Hefei, Anhui, 230032, China
| | - Wenhui Cui
- School of Pharmacy, Anhui Medical University, Hefei, Anhui, 230032, China.,The Second Hospital of Dalian Medical University, Dalian, 116023, China
| | - Zhihui Zhang
- The First Affiliated Hospital of Anhui Medical University, Hefei, 230022, China
| | - Delin Li
- Anhui University of Chinese Medicine, Hefei, Anhui, 230038, China
| | - Liucheng Li
- The First Affiliated Hospital of Anhui Medical University, Hefei, 230022, China
| | - Liang Xu
- The First Affiliated Hospital of Anhui Medical University, Hefei, 230022, China
| | - Hongwei Yao
- School of Pharmacy, Anhui Medical University, Hefei, Anhui, 230032, China
| | - Jian Gao
- The Second Hospital of Dalian Medical University, Dalian, 116023, China
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Qin T, Yin S, Yang J, Zhang Q, Liu Y, Huang F, Cao W. Sinomenine attenuates renal fibrosis through Nrf2-mediated inhibition of oxidative stress and TGFβ signaling. Toxicol Appl Pharmacol 2016; 304:1-8. [PMID: 27211841 DOI: 10.1016/j.taap.2016.05.009] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2016] [Revised: 05/05/2016] [Accepted: 05/16/2016] [Indexed: 02/06/2023]
Abstract
Renal fibrosis is the common feature of chronic kidney disease and mainly mediated by TGFβ-associated pro-fibrogenic signaling, which causes excessive extracellular matrix accumulation and successive loss of kidney functions. Sinomenine (SIN), an alkaloid derived from medicinal herb extensively used in treatment of rheumatoid arthritis and various inflammatory disorders, displays renal protective properties in experimental animals; however its pharmacological potency against renal fibrosis is not explored. In this study we report that SIN possesses strong anti-renal fibrosis functions in kidney cell and in mouse fibrotic kidney. SIN beneficially modulated the pro-fibrogenic protein expression in TGFβ-treated kidney cells and attenuated the renal fibrotic pathogenesis incurred by unilateral ureteral obstruction (UUO), which correlated with its activation of Nrf2 signaling - the key defender against oxidative stress with anti-fibrotic potentials. Further investigation on its regulation of Nrf2 downstream events revealed that SIN significantly balanced oxidative stress via improving the expression and activity of anti-oxidant and detoxifying enzymes, and interrupted the pro-fibrogenic signaling of TGFβ/Smad and Wnt/β-catenin. Even more impressively SIN achieved its anti-fibrotic activities in an Nrf2-dependent manner, suggesting that SIN regulation of Nrf2-associated anti-fibrotic activities constitutes a critical component of SIN's renoprotective functions. Collectively our studies have demonstrated a novel anti-fibrotic property of SIN and its upstream events and provided a molecular basis for SIN's potential applications in treatment of renal fibrosis-associated kidney disorders.
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Affiliation(s)
- Tian Qin
- School of Life Science & Technology, China Pharmaceutical University, Nanjing 210009, China
| | - Shasha Yin
- Jiangsu Key Laboratory of Molecular Medicine, Nanjing University School of Medicine, Nanjing 210093, China
| | - Jun Yang
- Jiangsu Key Laboratory of Molecular Medicine, Nanjing University School of Medicine, Nanjing 210093, China
| | - Qin Zhang
- Jiangsu Key Laboratory of Molecular Medicine, Nanjing University School of Medicine, Nanjing 210093, China
| | - Yangyang Liu
- Jiangsu Key Laboratory of Molecular Medicine, Nanjing University School of Medicine, Nanjing 210093, China
| | - Fengjie Huang
- School of Life Science & Technology, China Pharmaceutical University, Nanjing 210009, China.
| | - Wangsen Cao
- Jiangsu Key Laboratory of Molecular Medicine, Nanjing University School of Medicine, Nanjing 210093, China.
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Epigallocatechin-3-gallate attenuates cadmium-induced chronic renal injury and fibrosis. Food Chem Toxicol 2016; 96:70-8. [PMID: 27474435 DOI: 10.1016/j.fct.2016.07.030] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2016] [Revised: 07/13/2016] [Accepted: 07/25/2016] [Indexed: 12/11/2022]
Abstract
Cadmium (Cd) pollution is a serious environmental problem. Kidney is a main target organ of Cd toxicity. This study was undertaken to investigate the potential protective effects of epigallocatechin-3-gallate (EGCG) against chronic renal injury and fibrosis induced by CdCl2. Rat model was induced by exposing to 250 mg/L CdCl2 through drinking water. The renal function was evaluated by detecting the levels of blood urea nitrogen (BUN) and serum creatinine (SCR). The oxidative stress was measured by detecting the levels of malondialdehyde (MDA), nitric oxide (NO), reduced glutathione/oxidized glutathione (GSH/GSSG) and renal enzymatic antioxidant status. Additionally, the renal levels of transforming growth factor-β1 (TGF-β1), Smad3, phosphorylation-Smad3 (pp-Smad3), α-smooth muscle actin (α-SMA), vimentin and E-cadherin were measured by western blot assay. Renal levels of microRNA-21 (miR-21), miR-29a/b/c and miR-192 were measured by quantitative RT-PCR. It was found that EGCG ameliorated the CdCl2-induced renal injury, inhibited the level of oxidative stress, normalized renal enzymatic antioxidant status and E-cadherin level, as well as attenuated the over generation of TGF-β1, pp-Smad3, vimentin and α-SMA. EGCG also decreased the production of miR-21 and miR-192, and enhanced the levels of miR-29a/b/c. These results showed that EGCG could attenuate Cd induced chronic renal injury.
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Nabavi SF, Barber AJ, Spagnuolo C, Russo GL, Daglia M, Nabavi SM, Sobarzo-Sánchez E. Nrf2 as molecular target for polyphenols: A novel therapeutic strategy in diabetic retinopathy. Crit Rev Clin Lab Sci 2016; 53:293-312. [PMID: 26926494 DOI: 10.3109/10408363.2015.1129530] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Diabetic retinopathy is a microvascular complication of diabetes that is considered one of the leading causes of blindness among adults. More than 4.4 million people suffer from this disorder throughout the world. Growing evidence suggests that oxidative stress plays a crucial role in the pathophysiology of diabetic retinopathy. Nuclear factor erythroid 2-related factor 2 (Nrf2), a redox sensitive transcription factor, plays an essential protective role in regulating the physiological response to oxidative and electrophilic stress via regulation of multiple genes encoding antioxidant proteins and phase II detoxifying enzymes. Many studies suggest that dozens of natural compounds, including polyphenols, can supress oxidative stress and inflammation through targeting Nrf2 and consequently activating the antioxidant response element-related cytoprotective genes. Therefore, Nrf2 may provide a new therapeutic target for treatment of diabetic retinopathy. In the present article, we will focus on the role of Nrf2 in diabetic retinopathy and the ability of polyphenols to target Nrf2 as a therapeutic strategy.
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Affiliation(s)
- Seyed Fazel Nabavi
- a Applied Biotechnology Research Center, Baqiyatallah University of Medical Sciences , Tehran , Iran
| | - Alistair J Barber
- b Department of Ophthalmology , Penn State Hershey Eye Center, Penn State Hershey College of Medicine , Hershey , PA , USA
| | - Carmela Spagnuolo
- c Institute of Food Sciences, National Research Council , Avellino , Italy
| | - Gian Luigi Russo
- c Institute of Food Sciences, National Research Council , Avellino , Italy
| | - Maria Daglia
- d Department of Drug Sciences , Medicinal Chemistry and Pharmaceutical Technology Section, University of Pavia , Pavia , Italy , and
| | - Seyed Mohammad Nabavi
- a Applied Biotechnology Research Center, Baqiyatallah University of Medical Sciences , Tehran , Iran
| | - Eduardo Sobarzo-Sánchez
- e Laboratory of Pharmaceutical Chemistry , Department of Organic Chemistry, Faculty of Pharmacy, University of Santiago De Compostela , Santiago De Compostela , Spain
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Kim EK, Choi EJ, Debnath T. Role of phytochemicals in the inhibition of epithelial–mesenchymal transition in cancer metastasis. Food Funct 2016; 7:3677-85. [DOI: 10.1039/c6fo00901h] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Epithelial–mesenchymal transition (EMT) development is controlled by several signaling pathways including Hedgehog, Wnt, fibroblast growth factors (FGF), hepatocyte growth factor/scatter factor (HGF),etc. Phytochemicals is very promising therapeutic candidate that inhibit the progression of EMT by inhibiting the signaling pathways.
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Affiliation(s)
- Eun-Kyung Kim
- Division of Food BioScience
- College of Biomedical and Health Sciences
- Konkuk University
- Chungju 27478
- Republic of Korea
| | - Eun-Ju Choi
- Division of Sport Science
- College of Science and Technology
- Konkuk University
- Chungju 27478
- Republic of Korea
| | - Trishna Debnath
- Department of Food Science and Biotechnology
- Dongguk University
- Goyang 10326
- Republic of Korea
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Nrf2–ARE pathway: An emerging target against oxidative stress and neuroinflammation in neurodegenerative diseases. Pharmacol Ther 2016; 157:84-104. [DOI: 10.1016/j.pharmthera.2015.11.003] [Citation(s) in RCA: 324] [Impact Index Per Article: 40.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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33
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Huang Y, Li W, Su ZY, Kong ANT. The complexity of the Nrf2 pathway: beyond the antioxidant response. J Nutr Biochem 2015; 26:1401-13. [PMID: 26419687 DOI: 10.1016/j.jnutbio.2015.08.001] [Citation(s) in RCA: 299] [Impact Index Per Article: 33.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2015] [Accepted: 08/03/2015] [Indexed: 12/11/2022]
Abstract
The NF-E2-related factor 2 (Nrf2)-mediated signalling pathway provides living organisms an efficient and pivotal line of defensive to counteract environmental insults and endogenous stressors. Nrf2 coordinates the basal and inducible expression of antioxidant and Phase II detoxification enzymes to adapt to different stress conditions. The stability and cellular distribution of Nrf2 is tightly controlled by its inhibitory binding protein Kelch-like ECH-associated protein 1. Nrf2 signalling is also regulated by posttranslational, transcriptional, translational and epigenetic mechanisms, as well as by other protein partners, including p62, p21 and IQ motif-containing GTPase activating protein 1. Many studies have demonstrated that Nrf2 is a promising target for preventing carcinogenesis and other chronic diseases, including cardiovascular diseases, neurodegenerative diseases and pulmonary injury. However, constitutive activation of Nrf2 in advanced cancer cells may confer drug resistance. Here, we review the molecular mechanisms of Nrf2 signalling, the diverse classes of Nrf2 activators, including bioactive nutrients and other chemicals, and the cellular functions and disease relevance of Nrf2 and discuss the dual role of Nrf2 in different contexts.
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Affiliation(s)
- Ying Huang
- Department of Pharmaceutics, Earnest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA
| | - Wenji Li
- Department of Pharmaceutics, Earnest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA
| | - Zheng-yuan Su
- Department of Pharmaceutics, Earnest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA
| | - Ah-Ng Tony Kong
- Department of Pharmaceutics, Earnest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA.
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