51
|
Amanullah A, Upadhyay A, Joshi V, Mishra R, Jana NR, Mishra A. Progressing neurobiological strategies against proteostasis failure: Challenges in neurodegeneration. Prog Neurobiol 2017; 159:1-38. [DOI: 10.1016/j.pneurobio.2017.08.005] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2017] [Revised: 06/01/2017] [Accepted: 08/25/2017] [Indexed: 02/07/2023]
|
52
|
Amani H, Ajami M, Nasseri Maleki S, Pazoki-Toroudi H, Daglia M, Tsetegho Sokeng AJ, Di Lorenzo A, Nabavi SF, Devi KP, Nabavi SM. Targeting signal transducers and activators of transcription (STAT) in human cancer by dietary polyphenolic antioxidants. Biochimie 2017; 142:63-79. [DOI: 10.1016/j.biochi.2017.08.007] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2016] [Accepted: 08/08/2017] [Indexed: 12/11/2022]
|
53
|
Trehalose ameliorates oxidative stress-mediated mitochondrial dysfunction and ER stress via selective autophagy stimulation and autophagic flux restoration in osteoarthritis development. Cell Death Dis 2017; 8:e3081. [PMID: 28981117 PMCID: PMC5680575 DOI: 10.1038/cddis.2017.453] [Citation(s) in RCA: 173] [Impact Index Per Article: 24.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2017] [Revised: 08/06/2017] [Accepted: 08/09/2017] [Indexed: 12/15/2022]
Abstract
Oxidative stress-related apoptosis and autophagy play crucial roles in the development of osteoarthritis (OA), a progressive cartilage degenerative disease with multifactorial etiologies. Here, we determined autophagic flux changes and apoptosis in human OA and tert-Butyl hydroperoxide (TBHP)-treated chondrocytes. In addition, we explored the potential protective effects of trehalose, a novel Mammalian Target of Rapamycin (mTOR)-independent autophagic inducer, in TBHP-treated mouse chondrocytes and a destabilized medial meniscus (DMM) mouse OA model. We found aberrant p62 accumulation and increased apoptosis in human OA cartilage and chondrocytes. Consistently, p62 and cleaved caspase-3 levels increased in mouse chondrocytes under oxidative stress. Furthermore, trehalose restored oxidative stress-induced autophagic flux disruption and targeted autophagy selectively by activating BCL2 interacting protein 3 (BNIP3) and Phosphoglycerate mutase family member 5 (PGAM5). Trehalose could ameliorate oxidative stress-mediated mitochondrial membrane potential collapse, ATP level decrease, dynamin-related protein 1 (drp-1) translocation into the mitochondria, and the upregulation of proteins involved in mitochondria and endoplasmic reticulum (ER) stress-related apoptosis pathway. In addition, trehalose suppressed the cleavage of caspase 3 and poly(ADP-ribose) polymerase (PARP) and prevented DNA damage under oxidative stress. However, the anti-apoptotic effects of trehalose in TBHP-treated chondrocytes were partially abolished by autophagic flux inhibitor chloroquine and BNIP3- siRNA. The protective effect of trehalose was also found in mouse OA model. Taken together, these results indicate that trehalose has anti-apoptotic effects through the suppression of oxidative stress-induced mitochondrial injury and ER stress which is dependent on the promotion of autophagic flux and the induction of selective autophagy. Thus, trehalose is a promising therapeutic agent for OA.
Collapse
|
54
|
Therapeutic Effects of Olive and Its Derivatives on Osteoarthritis: From Bench to Bedside. Nutrients 2017; 9:nu9101060. [PMID: 28954409 PMCID: PMC5691677 DOI: 10.3390/nu9101060] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2017] [Revised: 09/11/2017] [Accepted: 09/20/2017] [Indexed: 01/11/2023] Open
Abstract
Osteoarthritis is a major cause of morbidity among the elderly worldwide. It is a disease characterized by localized inflammation of the joint and destruction of cartilage, leading to loss of function. Impaired chondrocyte repair mechanisms, due to inflammation, oxidative stress and autophagy, play important roles in the pathogenesis of osteoarthritis. Olive and its derivatives, which possess anti-inflammatory, antioxidant and autophagy-enhancing activities, are suitable candidates for therapeutic interventions for osteoarthritis. This review aimed to summarize the current evidence on the effects of olive and its derivatives, on osteoarthritis and chondrocytes. The literature on animal and human studies has demonstrated a beneficial effect of olive and its derivatives on the progression of osteoarthritis. In vitro studies have suggested that the augmentation of autophagy (though sirtuin-1) and suppression of inflammation by olive polyphenols could contribute to the chondroprotective effects of olive polyphenols. More research and well-planned clinical trials are required to justify the use of olive-based treatment in osteoarthritis.
Collapse
|
55
|
Wang W, Jing T, Yang X, He Y, Wang B, Xiao Y, Shang C, Zhang J, Lin R. Hydroxytyrosol regulates the autophagy of vascular adventitial fibroblasts through the SIRT1-mediated signaling pathway. Can J Physiol Pharmacol 2017; 96:88-96. [PMID: 28772080 DOI: 10.1139/cjpp-2016-0676] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Hydroxytyrosol (HT), a phenolic compound in olive oil, exerts an anti-inflammatory effect in cardiovascular diseases. Recent studies found that autophagy was a therapeutic target of diseases. However, the effect of HT on autophagy in vascular adventitial fibroblasts (VAFs) remains unknown. Thus, in this study, we aimed to determine the effect of HT on cell autophagy and related signaling pathway and whether HT regulates the inflammatory response through autophagy in VAFs. Our results showed that HT promoted cell autophagy by increasing the conversion of LC3 and Beclin1 expression and the autophagic flux in VAFs stimulated with tumor necrosis factor-α (TNF-α). HT also upregulated the expression of the deacetylase sirtuin 1 (SIRT1) protein and mRNA compared with the TNF-α group. The molecular docking studies showed the good compatibility between HT and SIRT1, indicating that HT might act through SIRT1. Further study found that HT regulated autophagy through SIRT1-mediated Akt/mTOR suppression in VAFs. In addition, HT inhibited TNF-α-induced inflammatory response in VAFs through SIRT1. Furthermore, the study showed that HT inhibited the inflammatory response of VAFs through autophagy. These findings indicate that HT regulates the autophagy of VAFs through SIRT1-mediated Akt/mTOR suppression and then inhibits the inflammatory response of VAFs.
Collapse
Affiliation(s)
- Weirong Wang
- a Research Institute of Atherosclerotic Disease, Xi'an Jiaotong University Cardiovascular Research Center Xi'an, Shaanxi 710061, China.,b Laboratory Animal Center, Xi'an Jiaotong University Health Science Center Xi'an, Shaanxi 710061, China
| | - Ting Jing
- c Department of Pharmacology, Xi'an Jiaotong University Health Science Center Xi'an, Shaanxi 710061, China
| | - Xiaofeng Yang
- c Department of Pharmacology, Xi'an Jiaotong University Health Science Center Xi'an, Shaanxi 710061, China
| | - Yanhao He
- c Department of Pharmacology, Xi'an Jiaotong University Health Science Center Xi'an, Shaanxi 710061, China
| | - Bo Wang
- c Department of Pharmacology, Xi'an Jiaotong University Health Science Center Xi'an, Shaanxi 710061, China
| | - Yunfang Xiao
- c Department of Pharmacology, Xi'an Jiaotong University Health Science Center Xi'an, Shaanxi 710061, China
| | - Chenxu Shang
- c Department of Pharmacology, Xi'an Jiaotong University Health Science Center Xi'an, Shaanxi 710061, China
| | - Jiye Zhang
- d School of Pharmacy, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi 710061, China
| | - Rong Lin
- c Department of Pharmacology, Xi'an Jiaotong University Health Science Center Xi'an, Shaanxi 710061, China
| |
Collapse
|
56
|
Chen GJ, Wu F, Pang XX, Zhang AH, Shi JB, Lu M, Tang CS. Retraction statement: ‘Urotensin II inhibits autophagy in renal tubular epithelial cells and induces extracellular matrix production in early diabetic mice’ by Guan‐Jong Chen, Fei Wu, Xin‐Xin Pang, Ai‐Hua Zhang, Jun‐Bao Shi, Min Lu and Chao‐Shu Tang. J Diabetes Investig 2017; 8:629. [PMID: 27459313 PMCID: PMC5497045 DOI: 10.1111/jdi.12557] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/01/2016] [Revised: 06/20/2016] [Accepted: 07/21/2016] [Indexed: 12/29/2022] Open
Abstract
AIMS/INTRODUCTION Urotensin II (UII) and autophagy have been considered as important components in the pathogenesis of diabetic nephropathy. The present study explores whether UII can regulate autophagy in the kidney, and its effect in diabetes. MATERIALS AND METHODS Immunohistochemistry and western blot were carried out on the kidney tissues of diabetic UII receptor (UT) gene knockout mice, wild-type diabetic mice and normal control mice. For the in vitro experiment, HK-2 cells were treated with UII (10-7 mol/L) in the presence or absence of UT antagonist, SB-657510, (10-6 mol/L) or autophagy inducer, rapamycin (10-3 mol/L), for 12 h. Markers for autophagy (LC3-II, p62/SQSTM1) and extracellular matrix (fibronectin, collagen IV) were analyzed. RESULTS In diabetic UT knockout mice, expression of LC3-II is increased and p62 was reduced in comparison with that of the normal diabetic mice. Fibronectin and collagen IV were downregulated in diabetic UT knockout mice when compared with that of the normal diabetic mice. For the in vitro cell experiment, UII was shown to inhibit expression LC3-II and increase expression of p62 in comparison with that of the normal control. Treatment with SB-657510 can block UII-induced downregulation of LC3-II and upregulation of p62 while inhibiting UII-induced upregulation of fibronectin and collagen IV. Adding autophagy inducer, rapamycin, also inhibited UII-induced upregulation of fibronectin and collagen IV. CONCLUSIONS The present study is the first to show that UII can downregulate autophagy in the kidney while accompanying the increased production of extracellular matrix in early diabetes. Our in vitro study also showed that upregulation of autophagy can decrease UII-induced production of extracellular matrix in HK-2 cells.
Collapse
Affiliation(s)
- Guan-Jong Chen
- Department of Nephrology, Peking University Third Hospital, Beijing, China
| | - Fei Wu
- Department of Nephrology, Peking University Third Hospital, Beijing, China
| | - Xin-Xin Pang
- Department of Nephrology, Peking University Third Hospital, Beijing, China
| | - Ai-Hua Zhang
- Department of Nephrology, Peking University Third Hospital, Beijing, China
| | - Jun-Bao Shi
- Department of Nephrology, Peking University Third Hospital, Beijing, China
| | - Min Lu
- Department of Pathology, Peking University Health Science Center, Beijing, China
| | - Chao-Shu Tang
- Department of Pathology and Physiology, Peking University Health Science Center, Beijing, China
| |
Collapse
|
57
|
D'Adamo S, Cetrullo S, Minguzzi M, Silvestri Y, Borzì RM, Flamigni F. MicroRNAs and Autophagy: Fine Players in the Control of Chondrocyte Homeostatic Activities in Osteoarthritis. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2017; 2017:3720128. [PMID: 28713485 PMCID: PMC5497632 DOI: 10.1155/2017/3720128] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/24/2017] [Revised: 05/12/2017] [Accepted: 05/22/2017] [Indexed: 12/17/2022]
Abstract
Osteoarthritis (OA) is a debilitating degenerative disease of the articular cartilage with a multifactorial etiology. Aging, the main risk factor for OA development, is associated with a systemic oxidative and inflammatory phenotype. Autophagy is a central housekeeping system that plays an antiaging role by supporting the clearance of senescence-associated alterations of macromolecules and organelles. Autophagy deficiency has been related to OA pathogenesis because of the accumulation of cellular defects in chondrocytes. Microribonucleic acids (microRNAs or miRs) are a well-established class of posttranscriptional modulators belonging to the family of noncoding RNAs that have been identified as key players in the regulation of cellular processes, such as autophagy, by targeting their own cognate mRNAs. Here, we present a state-of-the-art literature review on the role of miRs and autophagy in the scenario of OA pathogenesis. In addition, a comprehensive survey has been performed on the functional connections of the miR network and the autophagy pathway in OA by using "microRNA," "autophagy," and "osteoarthritis" as key words. Discussion of available evidence sheds light on some aspects that need further investigation in order to reach a more comprehensive view of the potential of this topic in OA.
Collapse
Affiliation(s)
- Stefania D'Adamo
- Dipartimento di Scienze Biomediche e Neuromotorie, Università di Bologna, Bologna, Italy
| | - Silvia Cetrullo
- Dipartimento di Scienze Biomediche e Neuromotorie, Università di Bologna, Bologna, Italy
| | - Manuela Minguzzi
- Dipartimento di Scienze Mediche e Chirurgiche, Università di Bologna, Bologna, Italy
- Laboratorio di Immunoreumatologia e Rigenerazione Tissutale, Istituto Ortopedico Rizzoli, Bologna, Italy
| | - Ylenia Silvestri
- Dipartimento di Scienze Biomediche e Neuromotorie, Università di Bologna, Bologna, Italy
| | - Rosa Maria Borzì
- Laboratorio di Immunoreumatologia e Rigenerazione Tissutale, Istituto Ortopedico Rizzoli, Bologna, Italy
| | - Flavio Flamigni
- Dipartimento di Scienze Biomediche e Neuromotorie, Università di Bologna, Bologna, Italy
| |
Collapse
|
58
|
Hydroxytyrosol and Cytoprotection: A Projection for Clinical Interventions. Int J Mol Sci 2017; 18:ijms18050930. [PMID: 28452954 PMCID: PMC5454843 DOI: 10.3390/ijms18050930] [Citation(s) in RCA: 79] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2017] [Revised: 04/20/2017] [Accepted: 04/26/2017] [Indexed: 01/07/2023] Open
Abstract
Hydroxytyrosol (HT) ((3,4-Dihydroxyphenyl)ethanol) is a polyphenol mainly present in extra virgin olive oil (EVOO) but also in red wine. It has a potent antioxidant effect related to hydrogen donation, and the ability to improve radical stability. The phenolic content of olive oil varies between 100 and 600 mg/kg, due to multiple factors (place of cultivation, climate, variety of the olive and level of ripening at the time of harvest), with HT and its derivatives providing half of that content. When consumed, EVOO’s phenolic compounds are hydrolyzed in the stomach and intestine, increasing levels of free HT which is then absorbed in the small intestine, forming phase II metabolites. It has been demonstrated that HT consumption is safe even at high doses, and that is not genotoxic or mutagenic in vitro. The beneficial effects of HT have been studied in humans, as well as cellular and animal models, mostly in relation to consumption of EVOO. Many properties, besides its antioxidant capacity, have been attributed to this polyphenol. The aim of this review was to assess the main properties of HT for human health with emphasis on those related to the possible prevention and/or treatment of non-communicable diseases.
Collapse
|
59
|
Sarais G, Crisafulli A, Concu D, Fois A, Raweh A, Concu A. Hydroxytyrosol But Not Resveratrol Ingestion Induced an Acute Increment of Post Exercise Blood Flow in Brachial Artery. Health (London) 2016. [DOI: 10.4236/health.2016.815170] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|