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Zhu C, Zhang L, Ding X, Wu W, Zou J. Non-coding RNAs as regulators of autophagy in chondrocytes: Mechanisms and implications for osteoarthritis. Ageing Res Rev 2024; 99:102404. [PMID: 38971322 DOI: 10.1016/j.arr.2024.102404] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2024] [Revised: 06/22/2024] [Accepted: 07/01/2024] [Indexed: 07/08/2024]
Abstract
Osteoarthritis (OA) is a chronic degenerative joint disease with multiple causative factors such as aging, mechanical injury, and obesity. Autophagy is a complex dynamic process that is involved in the degradation and modification of intracellular proteins and organelles under different pathophysiological conditions. Autophagy, as a cell survival mechanism under various stress conditions, plays a key role in regulating chondrocyte life cycle metabolism and cellular homeostasis. Non-coding RNAs (ncRNAs) are heterogeneous transcripts that do not possess protein-coding functions, but they can act as effective post-transcriptional and epigenetic regulators of gene and protein expression, thus participating in numerous fundamental biological processes. Increasing evidence suggests that ncRNAs, autophagy, and their crosstalk play crucial roles in OA pathogenesis. Therefore, we summarized the complex role of autophagy in OA chondrocytes and focused on the regulatory role of ncRNAs in OA-associated autophagy to elucidate the complex pathological mechanisms of the ncRNA-autophagy network in the development of OA, thus providing new research targets for the clinical diagnosis and treatment of OA.
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Affiliation(s)
- Chenyu Zhu
- School of Exercise and Health, Shanghai University of Sport, Shanghai 200438, China
| | - Lingli Zhang
- School of Athletic Performance, Shanghai University of Sport, Shanghai 200438, China
| | - Xiaoqing Ding
- School of Athletic Performance, Shanghai University of Sport, Shanghai 200438, China
| | - Wei Wu
- School of Athletic Performance, Shanghai University of Sport, Shanghai 200438, China.
| | - Jun Zou
- School of Exercise and Health, Shanghai University of Sport, Shanghai 200438, China.
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2
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Lesmana R, Tandean S, Christoper A, Suwantika AA, Wathoni N, Abdulah R, Fearnley J, Bankova V, Zulhendri F. Propolis as an autophagy modulator in relation to its roles in redox balance and inflammation regulation. Biomed Pharmacother 2024; 175:116745. [PMID: 38761422 DOI: 10.1016/j.biopha.2024.116745] [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: 03/21/2024] [Revised: 05/08/2024] [Accepted: 05/09/2024] [Indexed: 05/20/2024] Open
Abstract
Autophagy is a degradation process that is evolutionarily conserved and is essential in maintaining cellular and physiological homeostasis through lysosomal removal and elimination of damaged peptides, proteins and cellular organelles. The dysregulation of autophagy is implicated in various diseases and disorders, including cancers, infection-related, and metabolic syndrome-related diseases. Propolis has been demonstrated in various studies including many human clinical trials to have antimicrobial, antioxidant, anti-inflammatory, immune-modulator, neuro-protective, and anti-cancer. Nevertheless, the autophagy modulation properties of propolis have not been extensively studied and explored. The role of propolis and its bioactive compounds in modulating cellular autophagy is possibly due to their dual role in redox balance and inflammation. The present review attempts to discuss the activities of propolis as an autophagy modulator in biological models in relation to various diseases/disorders which has implications in the development of propolis-based nutraceuticals, functional foods, and complementary therapies.
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Affiliation(s)
- R Lesmana
- Physiology Division, Department of Biomedical Sciences, Faculty of Medicine, Universitas Padjadjaran, Indonesia; Biological Activity Division, Central Laboratory, Universitas Padjadjaran, Indonesia.
| | - S Tandean
- Department of Neurosurgery, Faculty of Medicine, Universitas Sumatera Utara, Medan, Sumatera Utara 20222, Indonesia.
| | - A Christoper
- Postgraduate Program of Medical Science, Faculty of Medicine, Universitas Padjadjaran, Bandung 45363, Indonesia.
| | - A A Suwantika
- Center of Excellence in Higher Education for Pharmaceutical Care Innovation, Universitas Padjadjaran, Bandung 45363, Indonesia; Department of Pharmacology and Clinical Pharmacy, Faculty of Pharmacy, Universitas Padjadjaran, Bandung 45363, Indonesia.
| | - N Wathoni
- Department of Pharmaceutics and Pharmaceutical Technology, Faculty of Pharmacy, Universitas Padjadjaran, Sumedang 45363, Indonesia; Research Center of Biopolymers for Drug and Cosmetic Delivery, Bandung 45363, Indonesia.
| | - R Abdulah
- Center of Excellence in Higher Education for Pharmaceutical Care Innovation, Universitas Padjadjaran, Bandung 45363, Indonesia; Department of Pharmacology and Clinical Pharmacy, Faculty of Pharmacy, Universitas Padjadjaran, Bandung 45363, Indonesia.
| | - J Fearnley
- Apiceutical Research Centre, Unit 3b Enterprise Way, Whitby, North Yorkshire YO18 7NA, UK.
| | - V Bankova
- Institute of Organic Chemistry with Centre of Phytochemistry, Bulgarian Academy of Sciences, Acad. G. Bonchev str., bl. 9, Sofia 1113, Bulgaria.
| | - F Zulhendri
- Kebun Efi, Kabanjahe, North Sumatra 22171, Indonesia; Center of Excellence in Higher Education for Pharmaceutical Care Innovation, Universitas Padjadjaran, Indonesia.
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Scorza C, Goncalves V, Finsterer J, Scorza F, Fonseca F. Exploring the Prospective Role of Propolis in Modifying Aging Hallmarks. Cells 2024; 13:390. [PMID: 38474354 DOI: 10.3390/cells13050390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2023] [Revised: 02/18/2024] [Accepted: 02/22/2024] [Indexed: 03/14/2024] Open
Abstract
Aging populations worldwide are placing age-related diseases at the forefront of the research agenda. The therapeutic potential of natural substances, especially propolis and its components, has led to these products being promising agents for alleviating several cellular and molecular-level changes associated with age-related diseases. With this in mind, scientists have introduced a contextual framework to guide future aging research, called the hallmarks of aging. This framework encompasses various mechanisms including genomic instability, epigenetic changes, mitochondrial dysfunction, inflammation, impaired nutrient sensing, and altered intercellular communication. Propolis, with its rich array of bioactive compounds, functions as a potent functional food, modulating metabolism, gut microbiota, inflammation, and immune response, offering significant health benefits. Studies emphasize propolis' properties, such as antitumor, cardioprotective, and neuroprotective effects, as well as its ability to mitigate inflammation, oxidative stress, DNA damage, and pathogenic gut bacteria growth. This article underscores current scientific evidence supporting propolis' role in controlling molecular and cellular characteristics linked to aging and its hallmarks, hypothesizing its potential in geroscience research. The aim is to discover novel therapeutic strategies to improve health and quality of life in older individuals, addressing existing deficits and perspectives in this research area.
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Affiliation(s)
- Carla Scorza
- Disciplina de Neurociência, Departamento de Neurologia e Neurocirurgia, Universidade Federal de São Paulo (UNIFESP), São Paulo 04039-032, Brazil
| | - Valeria Goncalves
- Disciplina de Neurociência, Departamento de Neurologia e Neurocirurgia, Universidade Federal de São Paulo (UNIFESP), São Paulo 04039-032, Brazil
| | | | - Fúlvio Scorza
- Disciplina de Neurociência, Departamento de Neurologia e Neurocirurgia, Universidade Federal de São Paulo (UNIFESP), São Paulo 04039-032, Brazil
| | - Fernando Fonseca
- Laboratório de Análises Clínicas da Faculdade de Medicina do ABC, Santo André 09060-650, Brazil
- Departamento de Ciencias Farmaceuticas, Universidade Federal de Sao Paulo (UNIFESP), Diadema 09972-270, Brazil
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4
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Arias C, Salazar LA. Ethanolic Extract of Propolis Modulates Autophagy-Related microRNAs in Osteoarthritic Chondrocytes. Int J Mol Sci 2023; 24:14767. [PMID: 37834215 PMCID: PMC10573165 DOI: 10.3390/ijms241914767] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Revised: 09/17/2023] [Accepted: 09/25/2023] [Indexed: 10/15/2023] Open
Abstract
Osteoarthritis is a multifactorial joint disease characterized by degeneration, and aging stands as a significant risk factor. Autophagy, a crucial cellular homeostasis mechanism, is influenced by aging and closely linked to cartilage health. This correlation between autophagy, cell death, and OA underscores its relevance in disease progression. MicroRNAs have emerged as autophagy regulators, with miRNA-based interventions showing promise in preclinical models. Remarkably, the ethanolic extract of propolis exhibits positive effects on autophagy-related proteins and healthy cartilage markers in an in vitro osteoarthritis model. The aim of this brief report was to evaluate through in silico analysis and postulate five microRNAs that could regulate autophagy proteins (AKT1, ATG5, and LC3) and assess whether the ethanolic extract of propolis could regulate the expression of these microRNAs. Among the examined miRNAs (miR-19a, miR-125b, miR-181a, miR-185, and miR-335), the ethanolic extract of propolis induced significant changes in four of them. Specifically, miR-125b responded to EEP by counteracting IL-1β-induced effects, while miR-181a, miR-185, and miR-335 exhibited distinct patterns of expression under EEP treatment. These findings unveil a potential link between miRNAs, EEP, and autophagy modulation in OA, offering promising therapeutic insights. Nevertheless, further validation and clinical translation are warranted to substantiate these promising observations.
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Affiliation(s)
- Consuelo Arias
- Escuela de Kinesiología, Facultad de Odontología y Ciencias de la Rehabilitación, Universidad San Sebastián, Santiago 8380000, Chile
| | - Luis A Salazar
- Center of Molecular Biology and Pharmacogenetics, Department of Basic Sciences, Faculty of Medicine, Universidad de La Frontera, Temuco 4811230, Chile
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Arias C, Vásquez B, Salazar LA. Propolis as a Potential Therapeutic Agent to Counteract Age-Related Changes in Cartilage: An In Vivo Study. Int J Mol Sci 2023; 24:14272. [PMID: 37762574 PMCID: PMC10532056 DOI: 10.3390/ijms241814272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2023] [Revised: 09/05/2023] [Accepted: 09/15/2023] [Indexed: 09/29/2023] Open
Abstract
Aging is intricately linked to chronic low-grade systemic inflammation, which plays a significant role in various age-related conditions, including osteoarthritis (OA). The aging process significantly influences the development of OA due to alterations in cartilage composition, reduced proteoglycan content, dysregulation of growth factor signaling, and heightened oxidative stress. Propolis, a natural product renowned for its potent antioxidant and anti-inflammatory properties, has the potential to mitigate age-induced changes in cartilage. The primary objective of this study was to rigorously assess the impact of in vivo propolis treatment on the histopathological characteristics of knee articular cartilage in senescent rats. This study involved a cohort of twenty male Sprague-Dawley rats, randomly allocated into four distinct groups for comparative analysis: YR (control group consisting of young rats), SR (senescent rats), SR-EEP (senescent rats treated with an ethanolic extract of propolis, EEP), and SR-V (senescent rats administered with a control vehicle). This study employed comprehensive histological and stereological analyses of knee articular cartilage. Propolis treatment exhibited a significant capacity to alleviate the severity of osteoarthritis, enhance the structural integrity of cartilage, and augment chondrocyte density. These promising findings underscore the potential of propolis as a compelling therapeutic agent to counteract age-related alterations in cartilage and, importantly, to potentially forestall the onset of osteoarthritis.
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Affiliation(s)
- Consuelo Arias
- Escuela de Kinesiología, Facultad de Odontología y Ciencias de la Rehabilitación, Universidad San Sebastián, Santiago 8380000, Chile;
| | - Bélgica Vásquez
- Department of Basic Sciences, Faculty of Medicine, Universidad de La Frontera, Avenida Francisco Salazar 01145, Temuco 4811230, Chile
- Centre of Excellence in Morphological and Surgical Studies, Universidad de La Frontera, Avenida Francisco Salazar 01145, Temuco 4811230, Chile
| | - Luis A. Salazar
- Department of Basic Sciences, Faculty of Medicine, Universidad de La Frontera, Avenida Francisco Salazar 01145, Temuco 4811230, Chile
- Center of Molecular Biology and Pharmacogenetics, Scientific and Technological Bioresource Nucleus, Universidad de La Frontera, Avenida Francisco Salazar 01145, Temuco 4811230, Chile
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Zulhendri F, Lesmana R, Tandean S, Christoper A, Chandrasekaran K, Irsyam I, Suwantika AA, Abdulah R, Wathoni N. Recent Update on the Anti-Inflammatory Activities of Propolis. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27238473. [PMID: 36500579 PMCID: PMC9740431 DOI: 10.3390/molecules27238473] [Citation(s) in RCA: 27] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Revised: 10/31/2022] [Accepted: 11/02/2022] [Indexed: 12/09/2022]
Abstract
In recent years, research has demonstrated the efficacy propolis as a potential raw material for pharmaceuticals and nutraceuticals. There is limited report detailing the mechanisms of action of propolis and its bioactive compounds in relation to their anti-inflammatory properties. Thus, the aim of the present review is to examine the latest experimental evidence (2017-2022) regarding the anti-inflammatory properties of propolis. A systematic scoping review methodology was implemented. After applying the exclusion criteria, a total of 166 research publications were identified and retrieved from Scopus, Web of Science, and Pubmed. Several key themes related to the anti-inflammatory properties of propolis were subsequently identified, namely in relation to cancers, oral health, metabolic syndrome, organ toxicity and inflammation, immune system, wound healing, and pathogenic infections. Based on the latest experimental evidence, propolis is demonstrated to possess various mechanisms of action in modulating inflammation towards the regulatory balance and anti-inflammatory environment. In general, we summarize that propolis acts as an anti-inflammatory substance by inhibiting and downregulating TLR4, MyD88, IRAK4, TRIF, NLRP inflammasomes, NF-κB, and their associated pro-inflammatory cytokines such as IL-1β, IL-6, IFN-γ, and TNF-α. Propolis also reduces the migration of immune cells such as macrophages and neutrophils, possibly by downregulating the chemokines CXCL9 and CXCL10.
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Affiliation(s)
- Felix Zulhendri
- Center of Excellence in Higher Education for Pharmaceutical Care Innovation, Universitas Padjadjaran, Bandung 45363, Indonesia
- Kebun Efi, Kabanjahe 22171, Indonesia
| | - Ronny Lesmana
- Center of Excellence in Higher Education for Pharmaceutical Care Innovation, Universitas Padjadjaran, Bandung 45363, Indonesia
- Physiology Division, Department of Biomedical Sciences, Faculty of Medicine, Universitas Padjadjaran, Bandung 45363, Indonesia
- Biological Activity Division, Central Laboratory, Universitas Padjadjaran, Bandung 45363, Indonesia
- Correspondence: (R.L.); (S.T.)
| | - Steven Tandean
- Department of Neurosurgery, Faculty of Medicine, Universitas Sumatera Utara, Medan 20222, Indonesia
- Correspondence: (R.L.); (S.T.)
| | - Andreas Christoper
- Postgraduate Program of Medical Science, Faculty of Medicine, Universitas Padjadjaran, Bandung 45363, Indonesia
| | | | - Ilham Irsyam
- Department of Orthopaedics and Traumatology, Faculty of Medicine, Universitas Sumatera Utara, Medan 20222, Indonesia
| | - Auliya A. Suwantika
- Center of Excellence in Higher Education for Pharmaceutical Care Innovation, Universitas Padjadjaran, Bandung 45363, Indonesia
- Department of Pharmacology and Clinical Pharmacy, Faculty of Pharmacy, Universitas Padjadjaran, Bandung 45363, Indonesia
| | - Rizky Abdulah
- Center of Excellence in Higher Education for Pharmaceutical Care Innovation, Universitas Padjadjaran, Bandung 45363, Indonesia
- Department of Pharmacology and Clinical Pharmacy, Faculty of Pharmacy, Universitas Padjadjaran, Bandung 45363, Indonesia
| | - Nasrul Wathoni
- Department of Pharmaceutics and Pharmaceutical Technology, Faculty of Pharmacy, Universitas Padjadjaran, Sumedang 45363, Indonesia
- Research Center of Biopolymers for Drug and Cosmetic Delivery, Bandung 45363, Indonesia
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7
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Araújo C, Oliveira RD, Pinto-Ribeiro F, Almeida-Aguiar C. An Insight on the Biomedical Potential of Portuguese Propolis from Gerês. Foods 2022; 11:3431. [PMID: 36360044 PMCID: PMC9656172 DOI: 10.3390/foods11213431] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 10/22/2022] [Accepted: 10/26/2022] [Indexed: 09/29/2023] Open
Abstract
Osteoarthritis (OA), a progressive degenerative disease of weight-bearing joints, is the second leading cause of disability in the world. Despite all the advances and research over the last years, none of the proposed strategies has been effective in generating functional and long-lasting tissue. Due to the high prevalence of OA and the urgent need for an effective and successful treatment, interest in natural products as anti-inflammatory agents, such as propolis and its components, has emerged. In this work, we estimate the biomedical potential of Portuguese propolis, evaluating the in vitro antioxidant and anti-inflammatory effects of single hydroalcoholic extracts prepared with propolis from Gerês sampled over a five-year period (2011-2015) (G.EE70 and G.EE35). The in vivo and in vitro anti-inflammatory potential of the hydroalcoholic extract of mixtures of the same samples (mG.EE70 and mG.EE35) was evaluated for the first time too. DPPH• radical scavenging and superoxide anion scavenging assays showed the strong antioxidant potential of both hydroalcoholic extracts, either prepared from single propolis samples or from the mixtures of the same samples. Results also revealed an anti-inflammatory effect of mG.EE35, both in vitro by inhibiting BSA denaturation and in vivo in the OA-induced model by improving mechanical hyperalgesia as well as the gait pattern parameters. Results further support the use of propolis blends as a better and more efficient approach to take full advantage of the bioactive potential of propolis.
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Affiliation(s)
- Carina Araújo
- Biology Department, University of Minho, 4710-057 Braga, Portugal
- Life and Health Sciences Research Institute (ICVS), University of Minho, 4710-057 Braga, Portugal
| | - Rafaela Dias Oliveira
- Biology Department, University of Minho, 4710-057 Braga, Portugal
- Life and Health Sciences Research Institute (ICVS), University of Minho, 4710-057 Braga, Portugal
- ICVS/3B’s—PT Government Associate Laboratory, 4710-057 Braga/4806-909 Guimarães, Portugal
- CBMA—Centre of Molecular and Environmental Biology, University of Minho, 4710-057 Braga, Portugal
| | - Filipa Pinto-Ribeiro
- Life and Health Sciences Research Institute (ICVS), University of Minho, 4710-057 Braga, Portugal
- ICVS/3B’s—PT Government Associate Laboratory, 4710-057 Braga/4806-909 Guimarães, Portugal
| | - Cristina Almeida-Aguiar
- Biology Department, University of Minho, 4710-057 Braga, Portugal
- CBMA—Centre of Molecular and Environmental Biology, University of Minho, 4710-057 Braga, Portugal
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8
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Jin Z, Chang B, Wei Y, Yang Y, Zhang H, Liu J, Piao L, Bai L. Curcumin exerts chondroprotective effects against osteoarthritis by promoting AMPK/PINK1/Parkin-mediated mitophagy. Biomed Pharmacother 2022; 151:113092. [PMID: 35550528 DOI: 10.1016/j.biopha.2022.113092] [Citation(s) in RCA: 44] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2022] [Revised: 04/30/2022] [Accepted: 05/04/2022] [Indexed: 11/28/2022] Open
Abstract
Osteoarthritis (OA), a chronic degenerative disease with heterogeneous properties, is difficult to cure due to its complex pathogenesis. Curcumin possesses excellent anti-inflammatory and antioxidant properties and may have potential therapeutic value in OA. In this study, we investigated the action targets of curcumin and identified potential anti-OA targets for curcumin. Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) signaling pathway analyses were performed to evaluate these targets. Furthermore, we established a sodium monoiodoacetate-induced rat knee OA model and IL-1β induced OA chondrocyte model to verify the effect and mechanism of curcumin against OA. The GO and KEGG analyses screened seven hub genes involved in metabolic processes and the AMPK signaling pathway. Curcumin can significantly attenuate OA characteristics according to Osteoarthritis Research Society International (OARSI) and Mankin scores in OA rats. Additionally, curcumin is notably employed as an activator of mitophagy in maintaining mitochondrial homeostasis (ROS, Ca2+, ATP production, and mitochondrial membrane potential). The expression levels of mitophagy-related proteins were increased not only in articular cartilage but also in chondrocytes with curcumin intervention. Combining validation experiments and network pharmacology, we identified the importance of mitophagy in the curcumin treatment of OA. The chondroprotective effects of curcumin against OA are mediated by the AMPK/PINK1/Parkin pathway, and curcumin may serve as a potential novel drug for OA management.
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Affiliation(s)
- Zhuangzhuang Jin
- Department of Emergency Medicine, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
| | - Bohan Chang
- Department of Rheumatology, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning, China
| | - Yingliang Wei
- Department of Orthopedic Surgery, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
| | - Yue Yang
- Department of Orthopedic Surgery, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
| | - He Zhang
- Department of Orthopedic Surgery, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
| | - Jiabao Liu
- Department of Orthopedic Surgery, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
| | - Longhuan Piao
- Department of Orthopedic Surgery, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
| | - Lunhao Bai
- Department of Orthopedic Surgery, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China.
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Arias C, Salazar LA. Autophagy and Polyphenols in Osteoarthritis: A Focus on Epigenetic Regulation. Int J Mol Sci 2021; 23:ijms23010421. [PMID: 35008847 PMCID: PMC8745146 DOI: 10.3390/ijms23010421] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2021] [Revised: 12/23/2021] [Accepted: 12/28/2021] [Indexed: 02/07/2023] Open
Abstract
Autophagy is an intracellular mechanism that maintains cellular homeostasis in different tissues. This process declines in cartilage due to aging, which is correlated with osteoarthritis (OA), a multifactorial and degenerative joint disease. Several studies show that microRNAs regulate different steps of autophagy but only a few of them participate in OA. Therefore, epigenetic modifications could represent a therapeutic opportunity during the development of OA. Besides, polyphenols are bioactive components with great potential to counteract diseases, which could reverse altered epigenetic regulation and modify autophagy in cartilage. This review aims to analyze epigenetic mechanisms that are currently associated with autophagy in OA, and to evaluate whether polyphenols are used to reverse the epigenetic alterations generated by aging in the autophagy pathway.
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Affiliation(s)
- Consuelo Arias
- Center of Molecular Biology and Pharmacogenetics, Department of Basic Sciences, Faculty of Medicine, Universidad de La Frontera, Temuco 4811230, Chile;
- Department of Preclinical Sciences, Faculty of Medicine, Universidad de La Frontera, Temuco 4811230, Chile
| | - Luis A. Salazar
- Center of Molecular Biology and Pharmacogenetics, Department of Basic Sciences, Faculty of Medicine, Universidad de La Frontera, Temuco 4811230, Chile;
- Interuniversity Center for Healthy Aging (ICHA), Universidad de La Frontera, Temuco 4811230, Chile
- Correspondence: ; Tel.: +56-45-259-6724
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