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Wang J, Wang M, Zhang C, Li W, Zhang T, Zhou Y, Flavel M, Xi Y, Li H, Liu X. Protective effects of sugarcane polyphenol against UV-B-induced photoaging in Balb/c mouse skin: Antioxidant, anti-inflammatory, and anti-glycosylation Effects. J Food Sci 2024; 89:3048-3063. [PMID: 38563092 DOI: 10.1111/1750-3841.17045] [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: 11/13/2023] [Revised: 01/27/2024] [Accepted: 03/08/2024] [Indexed: 04/04/2024]
Abstract
Although the benefits of sugarcane polyphenol (SP) are well documented, its function in preventing photoaging has not yet been investigated. This study aimed to investigate the protective effects of SP in preventing ultraviolet (UV)-B-induced skin photoaging in Balb/c mice, as well as the underlying mechanism. Chlorogenic acid was determined to be the primary component of SP by using high-performance liquid chromatography-mass spectrometry. SP and chlorogenic acid were orally administrated to mice for 56 days, and UV-B radiation exposure was administered 14 days after SP and chlorogenic acid administration and lasted 42 days to cause photoaging. SP and chlorogenic acid administrations significantly alleviated the UV-B-induced mouse skin photoaging, as indicated by the decrease in epidermal thickness, increase in the collagen (COL) volume fraction, and elevation in type 1 and type 3 COL contents. Notably, both SP and chlorogenic acid effectively reversed the overexpression of matrix metalloproteinase induced by UV-B exposure in the mouse skin. Furthermore, SP and chlorogenic acid reduced the expression of receptor for advanced glycosylation end products in the mice; amplified the activities of antioxidant enzymes superoxide dismutase and catalase; reduced malondialdehyde levels; and decreased inflammatory cytokines interleukin 1β, interleukin 6, and tumor necrosis factor α levels. SP could be a prospective dietary supplement for anti-photoaging applications due to its antioxidant, anti-inflammatory, and anti-glycosylation attributes, and chlorogenic acid might play a major role in these effects. PRACTICAL APPLICATION: This study can provide a scientific basis for the practical application of sugarcane polyphenols. We expect that sugarcane polyphenols can be used in food and beverage products to provide flavor while combating skin aging.
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Affiliation(s)
- Junru Wang
- Key Laboratory of Geriatric Nutrition and Health (Beijing Technology and Business University), Ministry of Education, Beijing, China
| | - Min Wang
- Key Laboratory of Geriatric Nutrition and Health (Beijing Technology and Business University), Ministry of Education, Beijing, China
| | | | - Wenhui Li
- Key Laboratory of Geriatric Nutrition and Health (Beijing Technology and Business University), Ministry of Education, Beijing, China
| | - Tianyu Zhang
- Key Laboratory of Geriatric Nutrition and Health (Beijing Technology and Business University), Ministry of Education, Beijing, China
| | - Yanv Zhou
- The Product Makers Co., Ltd., Shanghai, China
| | - Matthew Flavel
- The Product Makers Co., Ltd., Shanghai, China
- Department of Microbiology, Anatomy, Physiology, Pharmacology, La Trobe University, Bundoora, Australia
| | - Yu Xi
- Key Laboratory of Geriatric Nutrition and Health (Beijing Technology and Business University), Ministry of Education, Beijing, China
| | - He Li
- Key Laboratory of Geriatric Nutrition and Health (Beijing Technology and Business University), Ministry of Education, Beijing, China
| | - Xinqi Liu
- Key Laboratory of Geriatric Nutrition and Health (Beijing Technology and Business University), Ministry of Education, Beijing, China
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Saha S, Rebouh NY. Anti-Osteoarthritis Mechanism of the Nrf2 Signaling Pathway. Biomedicines 2023; 11:3176. [PMID: 38137397 PMCID: PMC10741080 DOI: 10.3390/biomedicines11123176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Revised: 11/23/2023] [Accepted: 11/27/2023] [Indexed: 12/24/2023] Open
Abstract
Osteoarthritis (OA) is a chronic degenerative disease and the primary pathogenic consequence of OA is inflammation, which can affect a variety of tissues including the synovial membrane, articular cartilage, and subchondral bone. The development of the intra-articular microenvironment can be significantly influenced by the shift of synovial macrophages between pro-inflammatory and anti-inflammatory phenotypes. By regulating macrophage inflammatory responses, the NF-κB signaling route is essential in the therapy of OA; whereas, the nuclear factor erythroid 2-related factor 2 (Nrf2) signaling pathway appears to manage the relationship between oxidative stress and inflammation. Additionally, it has been demonstrated that under oxidative stress and inflammation, there is a significant interaction between transcriptional pathways involving Nrf2 and NF-κB. Studying how Nrf2 signaling affects inflammation and cellular metabolism may help us understand how to treat OA by reprogramming macrophage behavior because Nrf2 signaling is thought to affect cellular metabolism. The candidates for treating OA by promoting an anti-inflammatory mechanism by activating Nrf2 are also reviewed in this paper.
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Affiliation(s)
- Sarmistha Saha
- Department of Biotechnology, Institute of Applied Sciences & Humanities, GLA University, Mathura 281406, Uttar Pradesh, India
| | - Nazih Y. Rebouh
- Department of Environmental Management, Institute of Environmental Engineering, RUDN University, 6 Miklukho-Maklaya St., 117198 Moscow, Russia
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Broz M, Furlan V, Lešnik S, Jukič M, Bren U. The Effect of the Ala16Val Mutation on the Secondary Structure of the Manganese Superoxide Dismutase Mitochondrial Targeting Sequence. Antioxidants (Basel) 2022; 11:antiox11122348. [PMID: 36552556 PMCID: PMC9774195 DOI: 10.3390/antiox11122348] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Revised: 11/16/2022] [Accepted: 11/25/2022] [Indexed: 11/29/2022] Open
Abstract
Manganese Superoxide Dismutase (MnSOD) represents a mitochondrial protein that scavenges reactive oxygen species (ROS) responsible for oxidative stress. A known single nucleotide polymorphism (SNP) rs4880 on the SOD2 gene, causing a mutation from alanine to valine (Ala16Val) in the primary structure of immature MnSOD, has been associated with several types of cancer and other autoimmune diseases. However, no conclusive correlation has been established yet. This study aims to determine the effect of the alanine to valine mutation on the secondary structure of the MnSOD mitochondrial targeting sequence (MTS). A model for each variant of the MTS was prepared and extensively simulated with molecular dynamics simulations using the CHARMM36m force field. The results indicate that the alanine variant of the MTS preserves a uniform α-helical secondary structure favorable for the protein transport into mitochondria, whereas the valine variant quickly breaks down its α-helix. Thus, the alanine MTS represents the more active MnSOD variant, the benefits of which have yet to be determined experimentally.
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Affiliation(s)
- Matic Broz
- Faculty of Chemistry and Chemical Engineering, University of Maribor, Smetanova ulica 17, SI-2000 Maribor, Slovenia
| | - Veronika Furlan
- Faculty of Chemistry and Chemical Engineering, University of Maribor, Smetanova ulica 17, SI-2000 Maribor, Slovenia
| | - Samo Lešnik
- Faculty of Chemistry and Chemical Engineering, University of Maribor, Smetanova ulica 17, SI-2000 Maribor, Slovenia
- Institute of Environmental Protection and Sensors, Beloruska ulica 7, SI-2000 Maribor, Slovenia
| | - Marko Jukič
- Faculty of Chemistry and Chemical Engineering, University of Maribor, Smetanova ulica 17, SI-2000 Maribor, Slovenia
- Faculty of Mathematics, Natural Sciences and Information Technologies, University of Primorska, Glagoljaška ulica 8, SI-6000 Koper, Slovenia
| | - Urban Bren
- Faculty of Chemistry and Chemical Engineering, University of Maribor, Smetanova ulica 17, SI-2000 Maribor, Slovenia
- Institute of Environmental Protection and Sensors, Beloruska ulica 7, SI-2000 Maribor, Slovenia
- Faculty of Mathematics, Natural Sciences and Information Technologies, University of Primorska, Glagoljaška ulica 8, SI-6000 Koper, Slovenia
- Correspondence:
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Lou MF. Glutathione and Glutaredoxin in Redox Regulation and Cell Signaling of the Lens. Antioxidants (Basel) 2022; 11:1973. [PMID: 36290696 PMCID: PMC9598519 DOI: 10.3390/antiox11101973] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Revised: 09/20/2022] [Accepted: 09/23/2022] [Indexed: 11/16/2022] Open
Abstract
The ocular lens has a very high content of the antioxidant glutathione (GSH) and the enzymes that can recycle its oxidized form, glutathione disulfide (GSSG), for further use. It can be synthesized in the lens and, in part, transported from the neighboring anterior aqueous humor and posterior vitreous body. GSH is known to protect the thiols of the structural lens crystallin proteins from oxidation by reactive oxygen species (ROS) so the lens can maintain its transparency for proper visual function. Age-related lens opacity or senile cataract is the major visual impairment in the general population, and its cause is closely associated with aging and a constant exposure to environmental oxidative stress, such as ultraviolet light and the metabolic end product, H2O2. The mechanism for senile cataractogenesis has been hypothesized as the results of oxidation-induced protein-thiol mixed disulfide formation, such as protein-S-S-glutathione and protein-S-S-cysteine mixed disulfides, which if not reduced in time, can change the protein conformation to allow cascading modifications of various kinds leading to protein-protein aggregation and insolubilization. The consequence of such changes in lens structural proteins is lens opacity. Besides GSH, the lens has several antioxidation defense enzymes that can repair oxidation damage. One of the specific redox regulating enzymes that has been recently identified is thioltransferase (glutaredoxin 1), which works in concert with GSH, to reduce the oxidative stress as well as to regulate thiol/disulfide redox balance by preventing protein-thiol mixed disulfide accumulation in the lens. This oxidation-resistant and inducible enzyme has multiple physiological functions. In addition to protecting structural proteins and metabolic enzymes, it is able to regulate the redox signaling of the cells during growth factor-stimulated cell proliferation and other cellular functions. This review article focuses on describing the redox regulating functions of GSH and the thioltransferase enzyme in the ocular lens.
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Affiliation(s)
- Marjorie F. Lou
- School of Veterinary Medicine and Biomedical Sciences, Redox Biology Center, University of Nebraska-Lincoln, Lincoln, NE 68583, USA;
- Department of Ophthalmology, University of Nebraska Medical Center, Omaha, NE 68198, USA
- Department of Pharmaceutical Sciences, System College of Pharmacy, University of North Texas Health Science Center, Fort Worth, TX 76107, USA
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5
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Active Constituents Isolated from Zingiber zerumbet with Anti-Arthritis Activity. Chem Nat Compd 2022. [DOI: 10.1007/s10600-022-03828-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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The Expression Levels and Significance of GSH, MDA, SOD, and 8-OHdG in Osteochondral Defects of Rabbit Knee Joints. BIOMED RESEARCH INTERNATIONAL 2022; 2022:6916179. [PMID: 35097125 PMCID: PMC8791730 DOI: 10.1155/2022/6916179] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Revised: 12/13/2021] [Accepted: 12/20/2021] [Indexed: 11/17/2022]
Abstract
Objective To observe the dynamic changes in oxidative stress and the expression levels of antioxidant and oxidative parameters in the blood and synovial fluid in the osteochondral defects of the rabbit knee joints and to explore the significance. Methods Thirty New Zealand white rabbits were randomly selected and divided into a blank control group (n = 10), a model control group (n = 10), and an osteochondral defect group (n = 10). The osteochondral defect model of rabbit knee joint was constructed by medial parapatellar arthrotomy. The expression levels of glutathione (GSH), malondialdehyde (MDA), superoxide dismutase (SOD), and 8-hydroxydeoxyguanosine (8-OHdG) in peripheral venous blood and knee synovial fluid of the three groups were measured at the end of the 4th, 8th, and 12th weeks after treatment. Results The expression levels of GSH and SOD in the blood and synovial fluid in the osteochondral defect group at the end of the 8th and 12th weeks were observably lower than those of the other two groups (P < 0.05); higher expression levels of MDA and 8-OHdG in the blood and synovial fluid of the osteochondral defect group compared with those of the other two groups were obtained (P < 0.05). At the end of the 4th, 8th, and 12th weeks, the expression levels of MDA and 8-OHdG in the blood and synovial fluid of the osteochondral defect group presented an upward trend (P < 0.05). Conclusion The osteochondral defects initiate the oxidative stress in the body, which is presented as the decrease of GSH and SOD expression, and the upregulation of MDA and 8-OHdG expression.
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Manjili MH, Khazaie K. Pattern recognition of tumor dormancy and relapse beyond cell-intrinsic and cell-extrinsic pathways. Semin Cancer Biol 2022; 78:1-4. [PMID: 34990835 DOI: 10.1016/j.semcancer.2021.12.008] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
In this thematic issue, several mechanisms of tumor dormancy and relapse are discussed. The reviews suggest mutual interactions and communications between malignant cells and other cells in their niche during tumor dormancy. Nevertheless, a complete understanding of tumor dormancy remains elusive. This is because we are getting lost in details of cell-intrinsic and cell-extrinsic molecular pathways without being able to discover the pattern of tumor dormancy. Here, we discuss some conceptual frameworks and methodological approaches that facilitate pattern recognition of tumor dormancy, and propose that settling on certain biological scale such as mitochondria would be the key to discover the pattern of tumor dormancy and relapse.
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Affiliation(s)
- Masoud H Manjili
- Department of Microbiology & Immunology, VCU School of Medicine, Massey Cancer Center, 401 College Street, Box 980035, Richmond, VA, 23298, United States.
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Prasad A, Mahmood A, Gupta R, Bisoyi P, Saleem N, Naga Prasad SV, Goswami SK. In cardiac muscle cells, both adrenergic agonists and antagonists induce reactive oxygen species from NOX2 but mutually attenuate each other's effects. Eur J Pharmacol 2021; 908:174350. [PMID: 34265295 DOI: 10.1016/j.ejphar.2021.174350] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Revised: 07/07/2021] [Accepted: 07/12/2021] [Indexed: 11/25/2022]
Abstract
In cardiac muscle cells adrenergic agonists stimulate the generation of reactive oxygen species, followed by redox signaling. We postulated that the antagonists would attenuate such reactive oxygen species generation by the agonists. H9c2 cardiac myoblasts, neonatal rat cardiac myocytes, and HEK293 cells expressing β1/β2 adrenoceptors were stimulated with several agonists and antagonists. All the agonists and antagonists independently generated reactive oxygen species; but its generation was minimum whenever an agonists was added together with an antagonist. We monitored the Ca++ signaling in the treated cells and obtained similar results. In all treatment sets, superoxide and H2O2 were generated in the mitochondria and the cytosol respectively. NOX2 inhibitor gp91ds-tat blocked reactive oxygen species generation by both the agonists and the antagonists. The level of p47phox subunit of NOX2 rapidly increased upon treatment, and it translocated to the plasma membrane, confirming NOX2 activation. Inhibitor studies showed that the activation of NOX2 involves ERK, PI3K, and tyrosine kinases. Recombinant promoter-reporter assays showed that reactive oxygen species generated by both the agonists and antagonists modulated downstream gene expression. Mice injected with the β-adrenergic agonist isoproterenol and fed with the antagonist metoprolol showed a robust induction of p47phox in the heart. We conclude that both the agonism and antagonism of adrenoceptors initiate redox signaling but when added together, they mutually counteract each other's effects. Our study thus highlights the importance of reactive oxygen species in adrenoceptor agonism and antagonism with relevance to the therapeutic use of the β blockers.
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Affiliation(s)
- Anamika Prasad
- School of Life Sciences, Jawaharlal Nehru University, New Mehrauli Road, New Delhi, 110067, India
| | - Amena Mahmood
- School of Life Sciences, Jawaharlal Nehru University, New Mehrauli Road, New Delhi, 110067, India; DDU-Kaushal Kendra, Centre for Physiotherapy and Rehabilitation Sciences, Jamia Millia Islamia, New Delhi, 110025, India
| | - Richa Gupta
- School of Life Sciences, Jawaharlal Nehru University, New Mehrauli Road, New Delhi, 110067, India
| | - Padmini Bisoyi
- School of Life Sciences, Jawaharlal Nehru University, New Mehrauli Road, New Delhi, 110067, India
| | - Nikhat Saleem
- School of Life Sciences, Jawaharlal Nehru University, New Mehrauli Road, New Delhi, 110067, India
| | - Sathyamangla V Naga Prasad
- NB50, Department of Molecular Cardiology, Lerner Research Institute, Cleveland Clinic, 9500 Euclid Avenue, Cleveland, OH, 44195, USA.
| | - Shyamal K Goswami
- School of Life Sciences, Jawaharlal Nehru University, New Mehrauli Road, New Delhi, 110067, India.
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Kumar S, Theis T, Tschang M, Nagaraj V, Berthiaume F. Reactive Oxygen Species and Pressure Ulcer Formation after Traumatic Injury to Spinal Cord and Brain. Antioxidants (Basel) 2021; 10:antiox10071013. [PMID: 34202655 PMCID: PMC8300734 DOI: 10.3390/antiox10071013] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2021] [Revised: 06/15/2021] [Accepted: 06/21/2021] [Indexed: 11/29/2022] Open
Abstract
Traumatic injuries to the nervous system, including the brain and spinal cord, lead to neurological dysfunction depending upon the severity of the injury. Due to the loss of motor (immobility) and sensory function (lack of sensation), spinal cord injury (SCI) and brain injury (TBI) patients may be bed-ridden and immobile for a very long-time. These conditions lead to secondary complications such as bladder/bowel dysfunction, the formation of pressure ulcers (PUs), bacterial infections, etc. PUs are chronic wounds that fail to heal or heal very slowly, may require multiple treatment modalities, and pose a risk to develop further complications, such as sepsis and amputation. This review discusses the role of oxidative stress and reactive oxygen species (ROS) in the formation of PUs in patients with TBI and SCI. Decades of research suggest that ROS may be key players in mediating the formation of PUs. ROS levels are increased due to the accumulation of activated macrophages and neutrophils. Excessive ROS production from these cells overwhelms intrinsic antioxidant mechanisms. While short-term and moderate increases in ROS regulate signal transduction of various bioactive molecules; long-term and excessively elevated ROS can cause secondary tissue damage and further debilitating complications. This review discusses the role of ROS in PU development after SCI and TBI. We also review the completed and ongoing clinical trials in the management of PUs after SCI and TBI using different technologies and treatments, including antioxidants.
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Affiliation(s)
- Suneel Kumar
- Department of Biomedical Engineering, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA;
- Correspondence: ; Tel.: +1-848-445-6581
| | - Thomas Theis
- Keck Center for Collaborative Neuroscience, Department of Cell Biology and Neuroscience, Rutgers University, Piscataway, NJ 08554, USA; (T.T.); (V.N.)
| | - Monica Tschang
- School of Art and Sciences, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA;
| | - Vini Nagaraj
- Keck Center for Collaborative Neuroscience, Department of Cell Biology and Neuroscience, Rutgers University, Piscataway, NJ 08554, USA; (T.T.); (V.N.)
| | - Francois Berthiaume
- Department of Biomedical Engineering, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA;
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Mushtaq U, Bashir M, Nabi S, Khanday FA. Epidermal growth factor receptor and integrins meet redox signaling through P66shc and Rac1. Cytokine 2021; 146:155625. [PMID: 34157521 DOI: 10.1016/j.cyto.2021.155625] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2020] [Revised: 05/23/2021] [Accepted: 06/08/2021] [Indexed: 12/24/2022]
Abstract
This review examines the concerted role of Epidermal Growth Factor Receptor (EGFR) and integrins in regulating Reactive oxygen species (ROS) production through different signaling pathways. ROS as such are not always deleterious to the cells but they also act as signaling molecules, that regulates numerous indespensible physiological fuctions of life. Many adaptor proteins, particularly Shc and Grb2, are involved in mediating the downstream signaling pathways stimulated by EGFR and integrins. Integrin-induced activation of EGFR and subsequent tyrosine phosphorylation of a class of acceptor sites on EGFR leads to alignment and tyrosine phosphorylation of Shc, PLCγ, the p85 subunit of PI-3 K, and Cbl, followed by activation of the downstream targets Erk and Akt/PKB. Functional interactions between these receptors result in the activation of Rac1 via these adaptor proteins, thereby leading to Reactive Oxygen Species. Both GF and integrin activation can produce oxidants independently, however synergistically there is increased ROS generation, suggesting a mutual cooperation between integrins and GFRs for redox signalling. The ROS produced further promotes feed-forward stimulation of redox signaling events such as MAPK activation and gene expression. This relationship has not been reviewed previously. The literature presented here can have multiple implications, ranging from looking at synergistic effects of integrin and EGFR mediated signaling mechanisms of different proteins to possible therapeutic interventions operated by these two receptors. Furthermore, such mutual redox regulation of crosstalk between EGFR and integrins not only add to the established models of pathological oxidative stress, but also can impart new avenues and opportunities for targeted antioxidant based therapeutics.
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Affiliation(s)
- Umar Mushtaq
- Department of Biotechnology, University of Kashmir, Srinagar, JK 190006, India; Department of Biotechnology, Central University of Kashmir, Ganderbal, JK 191201, India
| | - Muneesa Bashir
- Department of Biotechnology, University of Kashmir, Srinagar, JK 190006, India; Department of Higher Education, Government of Jammu & Kashmir, 190001, India
| | - Sumaiya Nabi
- Department of Biochemistry, University of Kashmir, Srinagar, JK 190006, India
| | - Firdous A Khanday
- Department of Biotechnology, University of Kashmir, Srinagar, JK 190006, India.
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Targeting Reactive Oxygen Species Metabolism to Induce Myeloma Cell Death. Cancers (Basel) 2021; 13:cancers13102411. [PMID: 34067602 PMCID: PMC8156203 DOI: 10.3390/cancers13102411] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2021] [Revised: 05/10/2021] [Accepted: 05/13/2021] [Indexed: 02/06/2023] Open
Abstract
Multiple myeloma (MM) is a common hematological disease characterized by the accumulation of clonal malignant plasma cells in the bone marrow. Over the past two decades, new therapeutic strategies have significantly improved the treatment outcome and patients survival. Nevertheless, most MM patients relapse underlying the need of new therapeutic approaches. Plasma cells are prone to produce large amounts of immunoglobulins causing the production of intracellular ROS. Although adapted to high level of ROS, MM cells die when exposed to drugs increasing ROS production either directly or by inhibiting antioxidant enzymes. In this review, we discuss the efficacy of ROS-generating drugs for inducing MM cell death and counteracting acquired drug resistance specifically toward proteasome inhibitors.
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Pang KL, Chow YY, Leong LM, Law JX, Ghafar NA, Soelaiman IN, Chin KY. Establishing SW1353 Chondrocytes as a Cellular Model of Chondrolysis. Life (Basel) 2021; 11:272. [PMID: 33805920 PMCID: PMC8064306 DOI: 10.3390/life11040272] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Revised: 03/14/2021] [Accepted: 03/23/2021] [Indexed: 01/16/2023] Open
Abstract
Osteoarthritis (OA) is the most common degenerative joint disease characterised by chondrocyte cell death. An in vitro model of chondrocyte cell death may facilitate drug discovery in OA management. In this study, the cytotoxicity and mode of cell death of SW1353 chondrocytes treated with 24 h of OA inducers, including interleukin-1β (IL-1β), hydrogen peroxide (H2O2) and monosodium iodoacetate (MIA), were investigated. The microscopic features, oxidative (isoprostane) and inflammatory markers (tumour necrosis factor-alpha; TNF-α) for control and treated cells were compared. Our results showed that 24 h of H2O2 and MIA caused oxidative stress and a concentration-dependent reduction of SW1353 cell viability without TNF-α level upregulation. H2O2 primarily induced chondrocyte apoptosis with the detection of blebbing formation, cell shrinkage and cellular debris. MIA induced S-phase arrest on chondrocytes with a reduced number of attached cells but without significant cell death. On the other hand, 24 h of IL-1β did not affect the cell morphology and viability of SW1353 cells, with a significant increase in intracellular TNF-α levels without inducing oxidative stress. In conclusion, each OA inducer exerts differential effects on SW1353 chondrocyte cell fate. IL-1β is suitable in the inflammatory study but not for chondrocyte cell death. H2O2 and MIA are suitable for inducing chondrocyte cell death and growth arrest, respectively.
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Affiliation(s)
- Kok-Lun Pang
- Department of Pharmacology, Faculty of Medicine, Universiti Kebangsaan Malaysia, Kuala Lumpur 56000, Malaysia; (K.-L.P.); (I.N.S.)
| | - Yoke Yue Chow
- Department of Orthopaedic and Trauma Medicine, Deanery of Clinical Sciences, The University of Edinburgh, Edinburgh EH16 4SB, UK;
| | - Lek Mun Leong
- Prima Nexus Sdn. Bhd., Kuala Lumpur 50470, Malaysia;
- Department of Biomedical Science, Faculty of Science, Lincoln University College, Petaling Jaya 47301, Malaysia
| | - Jia Xian Law
- Centre for Tissue Engineering and Regenerative Medicine, Universiti Kebangsaan Malaysia Medical Centre, Kuala Lumpur 56000, Malaysia;
| | - Norzana Abd Ghafar
- Department of Anatomy, Faculty of Medicine, Universiti Kebangsaan Malaysia, Kuala Lumpur 56000, Malaysia;
| | - Ima Nirwana Soelaiman
- Department of Pharmacology, Faculty of Medicine, Universiti Kebangsaan Malaysia, Kuala Lumpur 56000, Malaysia; (K.-L.P.); (I.N.S.)
| | - Kok-Yong Chin
- Department of Pharmacology, Faculty of Medicine, Universiti Kebangsaan Malaysia, Kuala Lumpur 56000, Malaysia; (K.-L.P.); (I.N.S.)
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Aboelella NS, Brandle C, Kim T, Ding ZC, Zhou G. Oxidative Stress in the Tumor Microenvironment and Its Relevance to Cancer Immunotherapy. Cancers (Basel) 2021; 13:cancers13050986. [PMID: 33673398 PMCID: PMC7956301 DOI: 10.3390/cancers13050986] [Citation(s) in RCA: 80] [Impact Index Per Article: 26.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Revised: 02/20/2021] [Accepted: 02/23/2021] [Indexed: 12/11/2022] Open
Abstract
Simple Summary Cancer cells are consistently under oxidative stress, as reflected by elevated basal level of reactive oxygen species (ROS), due to increased metabolism driven by aberrant cell growth. This feature has been exploited to develop therapeutic strategies that control tumor growth by modulating the oxidative stress in tumor cells. This review provides an overview of recent advances in cancer therapies targeting tumor oxidative stress, and highlights the emerging evidence implicating the effectiveness of cancer immunotherapies in intensifying tumor oxidative stress. The promises and challenges of combining ROS-inducing agents with cancer immunotherapy are also discussed. Abstract It has been well-established that cancer cells are under constant oxidative stress, as reflected by elevated basal level of reactive oxygen species (ROS), due to increased metabolism driven by aberrant cell growth. Cancer cells can adapt to maintain redox homeostasis through a variety of mechanisms. The prevalent perception about ROS is that they are one of the key drivers promoting tumor initiation, progression, metastasis, and drug resistance. Based on this notion, numerous antioxidants that aim to mitigate tumor oxidative stress have been tested for cancer prevention or treatment, although the effectiveness of this strategy has yet to be established. In recent years, it has been increasingly appreciated that ROS have a complex, multifaceted role in the tumor microenvironment (TME), and that tumor redox can be targeted to amplify oxidative stress inside the tumor to cause tumor destruction. Accumulating evidence indicates that cancer immunotherapies can alter tumor redox to intensify tumor oxidative stress, resulting in ROS-dependent tumor rejection. Herein we review the recent progresses regarding the impact of ROS on cancer cells and various immune cells in the TME, and discuss the emerging ROS-modulating strategies that can be used in combination with cancer immunotherapies to achieve enhanced antitumor effects.
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Affiliation(s)
- Nada S. Aboelella
- Georgia Cancer Center, Medical College of Georgia, Augusta University, Augusta, GA 30912, USA; (N.S.A.); (C.B.); (Z.-C.D.)
- The Graduate School, Augusta University, Augusta, GA 30912, USA
| | - Caitlin Brandle
- Georgia Cancer Center, Medical College of Georgia, Augusta University, Augusta, GA 30912, USA; (N.S.A.); (C.B.); (Z.-C.D.)
| | - Timothy Kim
- The Center for Undergraduate Research and Scholarship, Augusta University, Augusta, GA 30912, USA;
| | - Zhi-Chun Ding
- Georgia Cancer Center, Medical College of Georgia, Augusta University, Augusta, GA 30912, USA; (N.S.A.); (C.B.); (Z.-C.D.)
- Department of Biochemistry and Molecular Biology, Medical College of Georgia, Augusta University, Augusta, GA 30912, USA
| | - Gang Zhou
- Georgia Cancer Center, Medical College of Georgia, Augusta University, Augusta, GA 30912, USA; (N.S.A.); (C.B.); (Z.-C.D.)
- The Graduate School, Augusta University, Augusta, GA 30912, USA
- Department of Biochemistry and Molecular Biology, Medical College of Georgia, Augusta University, Augusta, GA 30912, USA
- Department of Medicine, Medical College of Georgia, Augusta University, Augusta, GA 30912, USA
- Correspondence: ; Tel.: +1-706-721-4472
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Tauffenberger A, Magistretti PJ. Reactive Oxygen Species: Beyond Their Reactive Behavior. Neurochem Res 2021; 46:77-87. [PMID: 33439432 PMCID: PMC7829243 DOI: 10.1007/s11064-020-03208-7] [Citation(s) in RCA: 47] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Revised: 11/02/2020] [Accepted: 12/15/2020] [Indexed: 12/13/2022]
Abstract
Cellular homeostasis plays a critical role in how an organism will develop and age. Disruption of this fragile equilibrium is often associated with health degradation and ultimately, death. Reactive oxygen species (ROS) have been closely associated with health decline and neurological disorders, such as Alzheimer's disease or Parkinson's disease. ROS were first identified as by-products of the cellular activity, mainly mitochondrial respiration, and their high reactivity is linked to a disruption of macromolecules such as proteins, lipids and DNA. More recent research suggests more complex function of ROS, reaching far beyond the cellular dysfunction. ROS are active actors in most of the signaling cascades involved in cell development, proliferation and survival, constituting important second messengers. In the brain, their impact on neurons and astrocytes has been associated with synaptic plasticity and neuron survival. This review provides an overview of ROS function in cell signaling in the context of aging and degeneration in the brain and guarding the fragile balance between health and disease.
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Affiliation(s)
- Arnaud Tauffenberger
- King Abdullah University of Science and Technology, Thuwal, 23955, Kingdom of Saudi Arabia.
| | - Pierre J Magistretti
- King Abdullah University of Science and Technology, Thuwal, 23955, Kingdom of Saudi Arabia.
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15
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Ansari MY, Ahmad N, Haqqi TM. Oxidative stress and inflammation in osteoarthritis pathogenesis: Role of polyphenols. Biomed Pharmacother 2020; 129:110452. [PMID: 32768946 PMCID: PMC8404686 DOI: 10.1016/j.biopha.2020.110452] [Citation(s) in RCA: 245] [Impact Index Per Article: 61.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Revised: 06/13/2020] [Accepted: 06/21/2020] [Indexed: 02/06/2023] Open
Abstract
Osteoarthritis (OA) is the most prevalent joint degenerative disease leading to irreversible structural and functional changes in the joint and is a major cause of disability and reduced life expectancy in ageing population. Despite the high prevalence of OA, there is no disease modifying drug available for the management of OA. Oxidative stress, a result of an imbalance between the production of reactive oxygen species (ROS) and their clearance by antioxidant defense system, is high in OA cartilage and is a major cause of chronic inflammation. Inflammatory mediators, such as interleukin-1β (IL-1β), tumor necrosis factor-α (TNF-α) and interleukin-6 (IL-6) are highly upregulated in OA joints and induce ROS production and expression of matrix degrading proteases leading to cartilage extracellular matrix degradation and joint dysfunction. ROS and inflammation are interdependent, each being the target of other and represent ideal target/s for the treatment of OA. Plant polyphenols possess potent antioxidant and anti-inflammatory properties and can inhibit ROS production and inflammation in chondrocytes, cartilage explants and in animal models of OA. The aim of this review is to discuss the chondroprotective effects of polyphenols and modulation of different molecular pathways associated with OA pathogenesis and limitations and future prospects of polyphenols in OA treatment.
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Affiliation(s)
- Mohammad Yunus Ansari
- Department of Anatomy and Neurobiology, Northeast Ohio Medical University, 4209, ST RT 44, Rootstown, Ohio, 44272, USA.
| | - Nashrah Ahmad
- Department of Anatomy and Neurobiology, Northeast Ohio Medical University, 4209, ST RT 44, Rootstown, Ohio, 44272, USA; School of Biomedical Sciences, Kent State University, Kent, Ohio, USA.
| | - Tariq M Haqqi
- Department of Anatomy and Neurobiology, Northeast Ohio Medical University, 4209, ST RT 44, Rootstown, Ohio, 44272, USA.
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16
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Dimitrijević M, Arsenović-Ranin N, Bufan B, Nacka-Aleksić M, Kosec D, Pilipović I, Kotur-Stevuljević J, Simić L, Sopta J, Leposavić G. Sex-Based Differences in Monocytic Lineage Cells Contribute to More Severe Collagen-Induced Arthritis in Female Rats Compared with Male Rats. Inflammation 2020; 43:2312-2331. [PMID: 32857321 DOI: 10.1007/s10753-020-01302-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Monocytes' plasticity has an important role in the development of rheumatoid arthritis (RA), an autoimmune disease exhibiting greater prevalence in women. Contribution of this phenomenon to sex bias in RA severity was investigated in rat collagen-induced arthritis (CIA) model of RA. The greater severity of CIA in females (exhibiting signs of bone resorption) was accompanied by the higher blood level of advanced oxidation protein products and a more pro-oxidant profile. Consistently, in females, the greater density of giant multinuclear cells (monocytes/macrophages and osteoclasts) in inflamed joint tissue was found. This correlated with the higher frequencies of CCR2- and CX3CR1- expressing cells (precursors of inflammatory monocytes/macrophages and osteoclasts) among CD11b+ splenocytes. This in conjunction with the enhanced migratory capacity of CD11b+ monocytic cells in females compared with males could be linked with the higher frequencies of CCR2+CX3CR1-CD43lowCD11b+ and CCR2-CX3CR1+CD43hiCD11b+ cells (corresponding to "classical" and "non-classical" monocytes, respectively) and the greater density of CD68+ cells (monocytes/macrophages and osteoclast precursors/osteoclasts) in blood and inflamed paws from female rats, respectively. Consistently, the higher levels of GM-CSF, TNF-α and IL-6, IL-1β (driving Th17 cell differentiation), and IL-17 followed by the lower level of IL-10 were measured in inflamed paw cultures from female compared with male rats. To the greater IL-17 production (associated with enhanced monocyte immigration and differentiation into osteoclasts) most likely contributed augmented Th17 cell generation in the lymph nodes draining arthritic joints from female compared with male rats. Overall, the study suggests the sex-specific contribution of monocytic lineage cells to CIA, and possibly RA development.
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Affiliation(s)
- Mirjana Dimitrijević
- Department of Immunology, Institute for Biological Research "Siniša Stanković" National Institute of Republic of Serbia, University of Belgrade, Bulevar despota Stefana 142, Belgrade, Serbia.
| | - Nevena Arsenović-Ranin
- Department of Microbiology and Immunology, Faculty of Pharmacy, University of Belgrade, Vojvode Stepe 450, Belgrade, Serbia
| | - Biljana Bufan
- Department of Microbiology and Immunology, Faculty of Pharmacy, University of Belgrade, Vojvode Stepe 450, Belgrade, Serbia
| | - Mirjana Nacka-Aleksić
- Department of Pathobiology, Faculty of Pharmacy, University of Belgrade, Vojvode Stepe 450, Belgrade, Serbia
| | - Duško Kosec
- Immunology Research Center "Branislav Janković", Institute of Virology, Vaccines and Sera "Torlak", Vojvode Stepe 458, Belgrade, Serbia
| | - Ivan Pilipović
- Immunology Research Center "Branislav Janković", Institute of Virology, Vaccines and Sera "Torlak", Vojvode Stepe 458, Belgrade, Serbia
| | - Jelena Kotur-Stevuljević
- Department of Medical Biochemistry, Faculty of Pharmacy, University of Belgrade, Vojvode Stepe 450, Belgrade, Serbia
| | - Ljubica Simić
- Department for Pathology, Faculty of Medicine, University of Belgrade, Dr Subotića 4/2, Belgrade, Serbia
| | - Jelena Sopta
- Department for Pathology, Faculty of Medicine, University of Belgrade, Dr Subotića 4/2, Belgrade, Serbia
| | - Gordana Leposavić
- Department of Pathobiology, Faculty of Pharmacy, University of Belgrade, Vojvode Stepe 450, Belgrade, Serbia.
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17
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Paunovska K, Da Silva Sanchez A, Foster MT, Loughrey D, Blanchard EL, Islam FZ, Gan Z, Mantalaris A, Santangelo PJ, Dahlman JE. Increased PIP3 activity blocks nanoparticle mRNA delivery. SCIENCE ADVANCES 2020; 6:eaba5672. [PMID: 32743074 PMCID: PMC7375820 DOI: 10.1126/sciadv.aba5672] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Accepted: 06/05/2020] [Indexed: 05/06/2023]
Abstract
The biological pathways that affect drug delivery in vivo remain poorly understood. We hypothesized that altering cell metabolism with phosphatidylinositol (3,4,5)-triphosphate (PIP3), a bioactive lipid upstream of the metabolic pathway PI3K (phosphatidylinositol 3-kinase)/AKT/ mTOR (mammalian target of rapamycin) would transiently increase protein translated by nanoparticle-delivered messenger RNA (mRNA) since these pathways increase growth and proliferation. Instead, we found that PIP3 blocked delivery of clinically-relevant lipid nanoparticles (LNPs) across multiple cell types in vitro and in vivo. PIP3-driven reductions in LNP delivery were not caused by toxicity, cell uptake, or endosomal escape. Interestingly, RNA sequencing and metabolomics analyses suggested an increase in basal metabolic rate. Higher transcriptional activity and mitochondrial expansion led us to formulate two competing hypotheses that explain the reductions in LNP-mediated mRNA delivery. First, PIP3 induced consumption of limited cellular resources, "drowning out" exogenously-delivered mRNA. Second, PIP3 triggers a catabolic response that leads to protein degradation and decreased translation.
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Affiliation(s)
| | | | - Matthew T. Foster
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA
| | | | | | - Fatima Z. Islam
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA
| | - Zubao Gan
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA
| | - Athanasios Mantalaris
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA
| | - Philip J. Santangelo
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA
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18
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Gu SH, Chen CH. Reactive oxygen species-mediated bombyxin signaling in Bombyx mori. INSECT BIOCHEMISTRY AND MOLECULAR BIOLOGY 2020; 117:103279. [PMID: 31756435 DOI: 10.1016/j.ibmb.2019.103279] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/20/2019] [Revised: 11/06/2019] [Accepted: 11/12/2019] [Indexed: 06/10/2023]
Abstract
In the present study, we demonstrated that bombyxin, an insect insulin-like peptide, modulated ecdysteroidogenesis in Bombyx mori prothoracic glands (PGs) through redox signaling. Our results showed that bombyxin treatment resulted in a transient increase in intracellular reactive oxygen species (ROS) concentration, as measured using 2',7'-dichlorofluorescin diacetate (DCFDA), an oxidation-sensitive fluorescent probe. The antioxidant N-acetylcysteine (NAC) abolished the bombyxin-induced increase in fluorescence in Bombyx PGs. Furthermore, bombyxin-induced ROS production was inhibited by mitochondrial oxidative phosphorylation inhibitors (rotenone and antimycin A), indicating mitochondria-mediated ROS production. The stimulation of ROS production in response to bombyxin appears to undergo development-specific changes. We further investigated the action mechanism of bombyxin-stimulated ROS signaling. Results showed that in the presence of either NAC, rotenone, or antimycin A, bombyxin-stimulated phosphorylation of insulin receptor, Akt, and 4E-binding protein (4E-BP) was blocked and bombyxin-stimulated ecdysteroidogenesis in PGs was greatly inhibited. From these results, we conclude that ROS signaling appears to be involved in bombyxin-stimulated ecdysteroidogenesis of PGs in B. mori by modulating the phosphorylation of insulin receptor, Akt, and 4E-BP. To our knowledge, this is the first demonstration of redox regulation in insulin signaling in an insect system.
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Affiliation(s)
- Shi-Hong Gu
- Department of Biology, National Museum of Natural Science, 1 Kuan-Chien Road, Taichung, 404, Taiwan, ROC.
| | - Chien-Hung Chen
- Chung Hwa University of Medical Technology, 89 Wen-Hwa 1st Road, Jen-Te Township, Tainan County, 717, Taiwan, ROC
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19
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Behring JB, van der Post S, Mooradian AD, Egan MJ, Zimmerman MI, Clements JL, Bowman GR, Held JM. Spatial and temporal alterations in protein structure by EGF regulate cryptic cysteine oxidation. Sci Signal 2020; 13:eaay7315. [PMID: 31964804 PMCID: PMC7263378 DOI: 10.1126/scisignal.aay7315] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Stimulation of plasma membrane receptor tyrosine kinases (RTKs), such as the epidermal growth factor receptor (EGFR), locally increases the abundance of reactive oxygen species (ROS). These ROS then oxidize cysteine residues in proteins to potentiate downstream signaling. Spatial confinement of ROS is an important regulatory mechanism of redox signaling that enables the stimulation of different RTKs to oxidize distinct sets of downstream proteins. To uncover additional mechanisms that specify cysteines that are redox regulated by EGF stimulation, we performed time-resolved quantification of the EGF-dependent oxidation of 4200 cysteine sites in A431 cells. Fifty-one percent of cysteines were statistically significantly oxidized by EGF stimulation. Furthermore, EGF induced three distinct spatiotemporal patterns of cysteine oxidation in functionally organized protein networks, consistent with the spatial confinement model. Unexpectedly, protein crystal structure analysis and molecular dynamics simulations indicated widespread redox regulation of cryptic cysteine residues that are solvent exposed only upon changes in protein conformation. Phosphorylation and increased flux of nucleotide substrates served as two distinct modes by which EGF specified the cryptic cysteine residues that became solvent exposed and redox regulated. Because proteins that are structurally regulated by different RTKs or cellular perturbations are largely unique, these findings suggest that solvent exposure and redox regulation of cryptic cysteine residues contextually delineate redox signaling networks.
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Affiliation(s)
- Jessica B Behring
- Department of Medicine, Washington University School of Medicine in St. Louis, St. Louis, MO 63110, USA
| | - Sjoerd van der Post
- Department of Medicine, Washington University School of Medicine in St. Louis, St. Louis, MO 63110, USA
| | - Arshag D Mooradian
- Department of Medicine, Washington University School of Medicine in St. Louis, St. Louis, MO 63110, USA
| | - Matthew J Egan
- Department of Medicine, Washington University School of Medicine in St. Louis, St. Louis, MO 63110, USA
| | - Maxwell I Zimmerman
- Department of Biochemistry and Molecular Biophysics, Washington University School of Medicine in St. Louis, St. Louis, MO 63110, USA
| | - Jenna L Clements
- Department of Medicine, Washington University School of Medicine in St. Louis, St. Louis, MO 63110, USA
| | - Gregory R Bowman
- Department of Biochemistry and Molecular Biophysics, Washington University School of Medicine in St. Louis, St. Louis, MO 63110, USA
| | - Jason M Held
- Department of Medicine, Washington University School of Medicine in St. Louis, St. Louis, MO 63110, USA.
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20
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Pervaiz S, Bellot GL, Lemoine A, Brenner C. Redox signaling in the pathogenesis of human disease and the regulatory role of autophagy. INTERNATIONAL REVIEW OF CELL AND MOLECULAR BIOLOGY 2020; 352:189-214. [DOI: 10.1016/bs.ircmb.2020.03.002] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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21
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Ursonic acid exerts inhibitory effects on matrix metalloproteinases via ERK signaling pathway. Chem Biol Interact 2019; 315:108910. [PMID: 31790661 DOI: 10.1016/j.cbi.2019.108910] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Revised: 11/23/2019] [Accepted: 11/27/2019] [Indexed: 01/01/2023]
Abstract
Ursonic acid is a pentacyclic triterpenoid compound that can be extracted from Ziziphus jujuba Mill., a traditional medicine. Matrix metalloproteinases (MMPs) are involved in cancer metastasis and skin aging. Regulation of various MMPs is closely associated with mitogen-activated protein kinases (MAPKs), including ERK, p38, and JNK MAPKs. In this study, we investigated the possibility of ursonic acid as an anti-cancer/anti-skin aging agent targeting MMPs. Cytotoxic effects of ursonic acid were analyzed by cell counting kit-8 (CCK-8) assay. Invasive abilities of ursonic acid-treated A549 and H1299 non-small cell lung cancer (NSCLC) cells were tested with Boyden chamber assay. Effects of ursonic acid on MMPs were analyzed by zymography assays and quantitative real time polymerase chain reaction (qRT-PCR). We also conducted flow cytometry and western blot analysis to elucidate the mechanisms of MMP regulation by ursonic acid. Our results revealed that ursonic acid inhibited transcriptional expression of gelatinases (MMP-2 and MMP-9) via inhibition of ERK and CREB signaling pathways in NSCLC cells. Moreover, ursonic acid reduced mRNA levels of collagenase (MMP-1) via suppression of ERK and c-Fos signaling pathways in HaCaT keratinocytes. These results suggest that ursonic acid could be a potential candidate for development of an effective novel anti-cancer and anti-wrinkle agent.
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22
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Klieser E, Mayr C, Kiesslich T, Wissniowski T, Fazio PD, Neureiter D, Ocker M. The Crosstalk of miRNA and Oxidative Stress in the Liver: From Physiology to Pathology and Clinical Implications. Int J Mol Sci 2019; 20:ijms20215266. [PMID: 31652839 PMCID: PMC6862076 DOI: 10.3390/ijms20215266] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Revised: 10/14/2019] [Accepted: 10/21/2019] [Indexed: 02/07/2023] Open
Abstract
The liver is the central metabolic organ of mammals. In humans, most diseases of the liver are primarily caused by an unhealthy lifestyle-high fat diet, drug and alcohol consumption- or due to infections and exposure to toxic substances like aflatoxin or other environmental factors. All these noxae cause changes in the metabolism of functional cells in the liver. In this literature review we focus on the changes at the miRNA level, the formation and impact of reactive oxygen species and the crosstalk between those factors. Both, miRNAs and oxidative stress are involved in the multifactorial development and progression of acute and chronic liver diseases, as well as in viral hepatitis and carcinogenesis, by influencing numerous signaling and metabolic pathways. Furthermore, expression patterns of miRNAs and antioxidants can be used for biomonitoring the course of disease and show potential to serve as possible therapeutic targets.
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Affiliation(s)
- Eckhard Klieser
- Institute of Pathology, Paracelsus Medical University/Salzburger Landeskliniken (SALK), 5020 Salzburg, Austria.
- Cancer Cluster Salzburg, 5020 Salzburg, Austria.
| | - Christian Mayr
- Department of Internal Medicine I, Paracelsus Medical University/Salzburger Landeskliniken (SALK), 5020 Salzburg, Austria.
- Institute of Physiology and Pathophysiology, Paracelsus Medical University/Salzburger Landeskliniken (SALK), 5020 Salzburg, Austria.
| | - Tobias Kiesslich
- Department of Internal Medicine I, Paracelsus Medical University/Salzburger Landeskliniken (SALK), 5020 Salzburg, Austria.
- Institute of Physiology and Pathophysiology, Paracelsus Medical University/Salzburger Landeskliniken (SALK), 5020 Salzburg, Austria.
| | - Till Wissniowski
- Department of Gastroenterology and Endocrinology, Philipps University Marburg, 35043 Marburg, Germany.
| | - Pietro Di Fazio
- Department of Visceral, Thoracic and Vascular Surgery, Philipps University Marburg, 35043 Marburg, Germany.
| | - Daniel Neureiter
- Institute of Pathology, Paracelsus Medical University/Salzburger Landeskliniken (SALK), 5020 Salzburg, Austria.
- Cancer Cluster Salzburg, 5020 Salzburg, Austria.
| | - Matthias Ocker
- Translational Medicine Oncology, Bayer AG, 13353 Berlin, Germany.
- Department of Gastroenterology CBF, Charité University Medicine Berlin, 12200 Berlin, Germany.
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23
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Scheid AD, Beadnell TC, Welch DR. The second genome: Effects of the mitochondrial genome on cancer progression. Adv Cancer Res 2019; 142:63-105. [PMID: 30885364 DOI: 10.1016/bs.acr.2019.01.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The role of genetics in cancer has been recognized for centuries, but most studies elucidating genetic contributions to cancer have understandably focused on the nuclear genome. Mitochondrial contributions to cancer pathogenesis have been documented for decades, but how mitochondrial DNA (mtDNA) influences cancer progression and metastasis remains poorly understood. This lack of understanding stems from difficulty isolating the nuclear and mitochondrial genomes as experimental variables, which is critical for investigating direct mtDNA contributions to disease given extensive crosstalk exists between both genomes. Several in vitro and in vivo models have isolated mtDNA as an independent variable from the nuclear genome. This review compares and contrasts different models, their advantages and disadvantages for studying mtDNA contributions to cancer, focusing on the mitochondrial-nuclear exchange (MNX) mouse model and findings regarding tumor progression, metastasis, and other complex cancer-related phenotypes.
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Affiliation(s)
- Adam D Scheid
- Department of Cancer Biology, The University of Kansas Medical Center, and The University of Kansas Cancer Center, Kansas City, KS, United States
| | - Thomas C Beadnell
- Department of Cancer Biology, The University of Kansas Medical Center, and The University of Kansas Cancer Center, Kansas City, KS, United States
| | - Danny R Welch
- Department of Cancer Biology, The University of Kansas Medical Center, and The University of Kansas Cancer Center, Kansas City, KS, United States.
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24
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Bai Y, Gong X, Dou C, Cao Z, Dong S. Redox control of chondrocyte differentiation and chondrogenesis. Free Radic Biol Med 2019; 132:83-89. [PMID: 30394290 DOI: 10.1016/j.freeradbiomed.2018.10.443] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/15/2018] [Revised: 10/14/2018] [Accepted: 10/26/2018] [Indexed: 11/24/2022]
Abstract
Chondrogenesis involves the recruitment and migration of mesenchymal cells, mesenchymal condensation, and chondrocyte differentiation and hypertrophy. Multiple factors precisely regulate chondrogenesis. Recent studies have demonstrated that the redox status of chondrocytes plays an essential role in the regulation of chondrocyte differentiation and chondrogenesis. Reactive oxygen species (ROS) and reactive nitrogen species (RNS) are important factors that change the intracellular redox status. Physiological levels of ROS/RNS act as intracellular signals in chondrocytes, and oxidative stress impairs the metabolism of chondrocytes. Under physiological conditions, the balance between ROS/RNS production and elimination ensures that redox-sensitive signalling proteins function correctly. The redox homeostasis of chondrocytes ensures that they respond appropriately to endogenous and exogenous stimuli. This review focuses on the redox regulation of key signalling pathways and transcription factors that control chondrogenesis and chondrocyte differentiation. Additionally, the mechanism by which ROS/RNS regulate signalling proteins and transcription factors in chondrocytes is also reviewed.
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Affiliation(s)
- Yun Bai
- Department of Biomedical Materials Science, School of Biomedical Engineering, Third Military Medical University, Gaotanyan Street No.30, Chongqing 400038, China
| | - Xiaoshan Gong
- Department of Biomedical Materials Science, School of Biomedical Engineering, Third Military Medical University, Gaotanyan Street No.30, Chongqing 400038, China
| | - Ce Dou
- Department of Biomedical Materials Science, School of Biomedical Engineering, Third Military Medical University, Gaotanyan Street No.30, Chongqing 400038, China
| | - Zhen Cao
- Department of Biomedical Materials Science, School of Biomedical Engineering, Third Military Medical University, Gaotanyan Street No.30, Chongqing 400038, China
| | - Shiwu Dong
- Department of Biomedical Materials Science, School of Biomedical Engineering, Third Military Medical University, Gaotanyan Street No.30, Chongqing 400038, China; State Key Laboratory of Trauma, Burns and Combined Injury, Third Military Medical University, Chongqing 400038, China.
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25
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Lepetsos P, Papavassiliou KA, Papavassiliou AG. Redox and NF-κB signaling in osteoarthritis. Free Radic Biol Med 2019; 132:90-100. [PMID: 30236789 DOI: 10.1016/j.freeradbiomed.2018.09.025] [Citation(s) in RCA: 209] [Impact Index Per Article: 41.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/19/2018] [Revised: 09/12/2018] [Accepted: 09/16/2018] [Indexed: 02/07/2023]
Abstract
Human cells have to deal with the constant production of reactive oxygen species (ROS). Although ROS overproduction might be harmful to cell biology, there are plenty of data showing that moderate levels of ROS control gene expression by maintaining redox signaling. Osteoarthritis (OA) is the most common joint disorder with a multi-factorial etiology including overproduction of ROS. ROS overproduction in OA modifies intracellular signaling, chondrocyte life cycle, metabolism of cartilage matrix and contributes to synovial inflammation and dysfunction of the subchondral bone. In arthritic tissues, the NF-κB signaling pathway can be activated by pro-inflammatory cytokines, mechanical stress, and extracellular matrix degradation products. This activation results in regulation of expression of many cytokines, inflammatory mediators, transcription factors, and several matrix-degrading enzymes. Overall, NF-κB signaling affects cartilage matrix remodeling, chondrocyte apoptosis, synovial inflammation, and has indirect stimulatory effects on downstream regulators of terminal chondrocyte differentiation. Interaction between redox signaling and NF-κB transcription factors seems to play a distinctive role in OA pathogenesis.
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Affiliation(s)
- Panagiotis Lepetsos
- Fourth Department of Orthopaedics & Trauma, 'KAT' General Hospital, Kifissia, 14561 Athens, Greece
| | - Kostas A Papavassiliou
- Department of Biological Chemistry, Medical School, National and Kapodistrian University of Athens, 75 M. Asias Street, 11527 Athens, Greece
| | - Athanasios G Papavassiliou
- Department of Biological Chemistry, Medical School, National and Kapodistrian University of Athens, 75 M. Asias Street, 11527 Athens, Greece.
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26
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Abstract
The increase in global lifespan has in turn increased the prevalence of osteoarthritis which is now the most common type of arthritis. Cartilage tissue located on articular joints erodes during osteoarthritis which causes pain and may lead to a crippling loss of function in patients. The pathophysiology of osteoarthritis has been understudied and currently no disease modifying treatments exist. The only current end-point treatment remains joint replacement surgery. The primary risk factor for osteoarthritis is age. Clinical and basic research is now focused on understanding the ageing process of cartilage and its role in osteoarthritis. This chapter will outline the physiology of cartilage tissue, the clinical presentation and treatment options for the disease and the cellular ageing processes which are involved in the pathophysiology of the disease.
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27
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Dajani S, Saripalli A, Sharma-Walia N. Water transport proteins-aquaporins (AQPs) in cancer biology. Oncotarget 2018; 9:36392-36405. [PMID: 30555637 PMCID: PMC6284741 DOI: 10.18632/oncotarget.26351] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2018] [Accepted: 10/22/2018] [Indexed: 02/06/2023] Open
Abstract
As highly conserved ubiquitous proteins, aquaporins (AQPs) play an imperative role in the development and progression of cancer. By trafficking water and other small molecules, AQPs play a vital role in preserving the cellular environment. Due to their critical role in cell stability and integrity, it would make sense that AQPs are involved in cancer progression. When AQPs alter the cellular environment, there may be several downstream effects such as alterations in cellular osmolality, volume, ionic composition, and signaling pathways. Changes in the intracellular levels of certain molecules serving as second messengers are synchronized by AQPs. Thus AQPs regulate numerous downstream effector signaling molecules that promote cancer development and progression. In numerous cancer types, AQP expression has shown a correlation with tumor stage and prognosis. Furthermore, AQPs assist in angiogenic and oxidative stress related damaging processes critical for cancer progression. This indicates that AQP proteins may be a viable therapeutic target or biomarker of cancer prognosis.
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Affiliation(s)
- Salah Dajani
- H.M. Bligh Cancer Research Laboratories, Department of Microbiology and Immunology, Chicago Medical School, Rosalind Franklin University of Medicine and Science, North Chicago, Illinois, USA
| | - Anand Saripalli
- H.M. Bligh Cancer Research Laboratories, Department of Microbiology and Immunology, Chicago Medical School, Rosalind Franklin University of Medicine and Science, North Chicago, Illinois, USA
| | - Neelam Sharma-Walia
- H.M. Bligh Cancer Research Laboratories, Department of Microbiology and Immunology, Chicago Medical School, Rosalind Franklin University of Medicine and Science, North Chicago, Illinois, USA
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28
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Sahu A, Mamiya H, Shinde SN, Cheikhi A, Winter LL, Vo NV, Stolz D, Roginskaya V, Tang WY, St Croix C, Sanders LH, Franti M, Van Houten B, Rando TA, Barchowsky A, Ambrosio F. Age-related declines in α-Klotho drive progenitor cell mitochondrial dysfunction and impaired muscle regeneration. Nat Commun 2018; 9:4859. [PMID: 30451844 PMCID: PMC6242898 DOI: 10.1038/s41467-018-07253-3] [Citation(s) in RCA: 101] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2017] [Accepted: 10/23/2018] [Indexed: 01/15/2023] Open
Abstract
While young muscle is capable of restoring the original architecture of damaged myofibers, aged muscle displays a markedly reduced regeneration. We show that expression of the "anti-aging" protein, α-Klotho, is up-regulated within young injured muscle as a result of transient Klotho promoter demethylation. However, epigenetic control of the Klotho promoter is lost with aging. Genetic inhibition of α-Klotho in vivo disrupted muscle progenitor cell (MPC) lineage progression and impaired myofiber regeneration, revealing a critical role for α-Klotho in the regenerative cascade. Genetic silencing of Klotho in young MPCs drove mitochondrial DNA (mtDNA) damage and decreased cellular bioenergetics. Conversely, supplementation with α-Klotho restored mtDNA integrity and bioenergetics of aged MPCs to youthful levels in vitro and enhanced functional regeneration of aged muscle in vivo in a temporally-dependent manner. These studies identify a role for α-Klotho in the regulation of MPC mitochondrial function and implicate α-Klotho declines as a driver of impaired muscle regeneration with age.
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MESH Headings
- Aging/genetics
- Aging/metabolism
- Aging/pathology
- Animals
- DNA Methylation
- DNA, Mitochondrial/genetics
- DNA, Mitochondrial/metabolism
- Epigenesis, Genetic
- Gene Expression Regulation, Developmental
- Glucuronidase
- Klotho Proteins
- Mice
- Mice, Inbred C57BL
- Mice, Knockout
- Mitochondria/genetics
- Mitochondria/metabolism
- Muscle, Skeletal/metabolism
- Muscle, Skeletal/pathology
- Myoblasts/metabolism
- Myoblasts/pathology
- Promoter Regions, Genetic
- RNA, Small Interfering/genetics
- RNA, Small Interfering/metabolism
- Receptors, Cell Surface/antagonists & inhibitors
- Receptors, Cell Surface/genetics
- Receptors, Cell Surface/metabolism
- Regeneration/genetics
- Signal Transduction
- Stem Cells/metabolism
- Stem Cells/pathology
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Affiliation(s)
- A Sahu
- Department of Physical Medicine and Rehabilitation, University of Pittsburgh, Pittsburgh, 15213, PA, USA
- Department of Environmental and Occupational Health, University of Pittsburgh, Pittsburgh, 15261, PA, USA
| | - H Mamiya
- Department of Physical Medicine and Rehabilitation, University of Pittsburgh, Pittsburgh, 15213, PA, USA
- Department of Bioengineering, University of Pittsburgh, Pittsburgh, 15260, PA, USA
| | - S N Shinde
- Department of Physical Medicine and Rehabilitation, University of Pittsburgh, Pittsburgh, 15213, PA, USA
| | - A Cheikhi
- Department of Physical Medicine and Rehabilitation, University of Pittsburgh, Pittsburgh, 15213, PA, USA
- Division of Geriatric Medicine, Department of Medicine, University of Pittsburgh, Pittsburgh, 15213, PA, USA
| | - L L Winter
- Department of Physical Medicine and Rehabilitation, University of Pittsburgh, Pittsburgh, 15213, PA, USA
- Department of Bioengineering, University of Pittsburgh, Pittsburgh, 15260, PA, USA
| | - N V Vo
- Department of Orthopaedic Surgery, University of Pittsburgh, Pittsburgh, 15213, PA, USA
- Department of Pathology, University of Pittsburgh, Pittsburgh, 15261, PA, USA
| | - D Stolz
- Department of Cell Biology, University of Pittsburgh, Pittsburgh, 15261, PA, USA
| | - V Roginskaya
- Department of Pharmacology & Chemical Biology, University of Pittsburgh Cancer Institute, University of Pittsburgh, Pittsburgh, 15232, PA, USA
| | - W Y Tang
- Department of Environmental Health and Engineering, Johns Hopkins Bloomberg School of Public Health, Baltimore, 21218-2608, MD, USA
| | - C St Croix
- Department of Cell Biology, University of Pittsburgh, Pittsburgh, 15261, PA, USA
| | - L H Sanders
- Department of Neurology, Duke University School of Medicine, Durham, 27704, NC, USA
| | - M Franti
- Research Beyond Borders: Boehringer-Ingelheim Pharmaceuticals, Ridgefield, 06877, CT, USA
| | - B Van Houten
- Department of Pharmacology & Chemical Biology, University of Pittsburgh Cancer Institute, University of Pittsburgh, Pittsburgh, 15232, PA, USA
| | - T A Rando
- Department of Neurology and Neurological Sciences, Stanford University School of Medicine, Stanford, CA, 94305, USA
- The Paul F. Glenn Center for the Biology of Aging, Stanford University School of Medicine, Stanford, CA, 94305, USA
- Center for Tissue Regeneration, Restoration and Repair, Veterans Affairs Hospital, Palo Alto, CA, 94036, USA
| | - A Barchowsky
- Department of Environmental and Occupational Health, University of Pittsburgh, Pittsburgh, 15261, PA, USA
- Department of Pharmacology & Chemical Biology, University of Pittsburgh Cancer Institute, University of Pittsburgh, Pittsburgh, 15232, PA, USA
| | - F Ambrosio
- Department of Physical Medicine and Rehabilitation, University of Pittsburgh, Pittsburgh, 15213, PA, USA.
- Department of Environmental and Occupational Health, University of Pittsburgh, Pittsburgh, 15261, PA, USA.
- Department of Bioengineering, University of Pittsburgh, Pittsburgh, 15260, PA, USA.
- Department of Orthopaedic Surgery, University of Pittsburgh, Pittsburgh, 15213, PA, USA.
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, 15219, PA, USA.
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29
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Abarrategi A, Gambera S, Alfranca A, Rodriguez-Milla MA, Perez-Tavarez R, Rouault-Pierre K, Waclawiczek A, Chakravarty P, Mulero F, Trigueros C, Navarro S, Bonnet D, García-Castro J. c-Fos induces chondrogenic tumor formation in immortalized human mesenchymal progenitor cells. Sci Rep 2018; 8:15615. [PMID: 30353072 PMCID: PMC6199246 DOI: 10.1038/s41598-018-33689-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2018] [Accepted: 10/03/2018] [Indexed: 12/15/2022] Open
Abstract
Mesenchymal progenitor cells (MPCs) have been hypothesized as cells of origin for sarcomas, and c-Fos transcription factor has been showed to act as an oncogene in bone tumors. In this study, we show c-Fos is present in most sarcomas with chondral phenotype, while multiple other genes are related to c-Fos expression pattern. To further define the role of c-Fos in sarcomagenesis, we expressed it in primary human MPCs (hMPCs), immortalized hMPCs and transformed murine MPCs (mMPCs). In immortalized hMPCs, c-Fos expression generated morphological changes, reduced mobility capacity and impaired adipogenic- and osteogenic-differentiation potentials. Remarkably, immortalized hMPCs or mMPCs expressing c-Fos generated tumors harboring a chondrogenic phenotype and morphology. Thus, here we show that c-Fos protein has a key role in sarcomas and that c-Fos expression in immortalized MPCs yields cell transformation and chondrogenic tumor formation.
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Affiliation(s)
- Ander Abarrategi
- Unidad de Biotecnología Celular, Instituto de Salud Carlos III, Madrid, E-28021, Spain
- Haematopoietic Stem Cell Laboratory, The Francis Crick Institute, London, WC2A 3LY, UK
| | - Stefano Gambera
- Unidad de Biotecnología Celular, Instituto de Salud Carlos III, Madrid, E-28021, Spain
| | - Arantzazu Alfranca
- Unidad de Biotecnología Celular, Instituto de Salud Carlos III, Madrid, E-28021, Spain
| | | | | | - Kevin Rouault-Pierre
- Haematopoietic Stem Cell Laboratory, The Francis Crick Institute, London, WC2A 3LY, UK
| | - Alexander Waclawiczek
- Haematopoietic Stem Cell Laboratory, The Francis Crick Institute, London, WC2A 3LY, UK
| | - Probir Chakravarty
- Bioinformatics Core, The Francis Crick Institute, London, United Kingdom
| | - Francisca Mulero
- Molecular Image Core Unit, Spanish National Cancer Research Centre, Madrid, E-28029, Spain
| | - César Trigueros
- Mesenchymal and Hematopoietic Stem Cell Laboratory, Fundación Inbiomed, San Sebastian, E-20009, Spain
| | - Samuel Navarro
- Pathology Department, University of Valencia, Valencia, E-46010, Spain
| | - Dominique Bonnet
- Haematopoietic Stem Cell Laboratory, The Francis Crick Institute, London, WC2A 3LY, UK
| | - Javier García-Castro
- Unidad de Biotecnología Celular, Instituto de Salud Carlos III, Madrid, E-28021, Spain.
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30
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Miller EJ, Gemensky-Metzler AJ, Wilkie DA, Wynne RM, Curto EM, Chandler HL. Effects of grape seed extract, lutein, and fish oil on responses of canine lens epithelial cells in vitro. Am J Vet Res 2018; 79:770-778. [PMID: 29943637 DOI: 10.2460/ajvr.79.7.770] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
OBJECTIVE To determine the effects of grape seed extract (GSE), lutein, and fish oil containing omega-3 fatty acids on oxidative stress, migration, proliferation, and viability of lens epithelial cells (LECs). SAMPLE Lens capsules or cultured LECs obtained from canine cadavers. PROCEDURES An antioxidant reductive capacity assay was used to determine reducing capability of each substance. The LECs were cultured and incubated with various substances, including N-acetyl cysteine (NAC), when appropriate, and dimethyl sulfoxide (DMSO) as positive and vehicle control substances, respectively. A dichlorofluorescein assay was used to evaluate reactive oxygen species (ROS) production, and a 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay was used to determine cell viability. Ex vivo posterior capsule opacification (PCO) was used to evaluate LEC migration and proliferation. RESULTS Antioxidant reductive effects of GSE surpassed those of NAC, lutein, and fish oil containing omega-3 fatty acids. The GSE reduced ROS production in LECs, compared with the DMSO vehicle control, whereas lutein was pro-oxidative. All test substances reduced cell viability. Ex vivo PCO was not altered by GSE, was decreased by lutein, and was increased by fish oil containing omega-3 fatty acids, compared with results for the DMSO vehicle control. CONCLUSIONS AND CLINICAL RELEVANCE Only GSE had significant antioxidant capabilities and reduced ROS production; however, no effect on ex vivo PCO was detected. Fish oil containing omega-3 fatty acids increased ex vivo PCO. No conclusions could be made regarding antioxidant effects of these substances on LECs. These findings suggested that the substances will not decrease PCO.
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31
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Hagio-Izaki K, Yasunaga M, Yamaguchi M, Kajiya H, Morita H, Yoneda M, Hirofuji T, Ohno J. Lipopolysaccharide induces bacterial autophagy in epithelial keratinocytes of the gingival sulcus. BMC Cell Biol 2018; 19:18. [PMID: 30165815 PMCID: PMC6117973 DOI: 10.1186/s12860-018-0168-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2018] [Accepted: 08/13/2018] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND Interactions of resident bacteria and/or their producing lipopolysaccharide (LPS) with sulcular epithelial keratinocytes may be regulated by autophagy in the gingival sulcus. In this study, we investigated an induction of bacterial autophagy in exfoliative sulcular keratinocytes of the gingival sulcus and cultured keratinocytes treated with Porphyromonas gingivalis-originated LPS (PgLPS). RESULTS Exfoliative sulcular keratinocytes showed an induction of autophagy, in addition to increased expression of LPS-mediated factors including lipopolysaccharide-binding protein and toll-like receptors (TLRs), leading to co-localization of bacteria with autophagosomes. In contrast, exfoliative keratinocytes from the free gingiva did not show similar autophagy. Autophagy activity in human cultured keratinocyte cells (HaCaT) was induced by PgLPS, which was dependent partially on the AMP-activated protein kinase (AMPK) pathway via increased intracellular reactive oxygen species (ROS) and was in association with an activation of TLR4 signaling. After incubation of cultured keratinocytes with E.coli BioParticles following PgLPS stimulation, co-localization of bioparticles with autophagosomes was enhanced. Conversely, blockage of autophagy with 3-methyladenin and LPS-binding with polymyxin B led to significant reduction of co-localization of particles with autophagosomes. CONCLUSION These findings indicate that PgLPS-induced autophagy is at least partially responsible for interaction between bacteria and sulcular keratinocytes in the gingival sulcus.
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Affiliation(s)
- Kanako Hagio-Izaki
- Section of General Dentistry, Department of General Dentistry, Fukuoka Dental College, Fukuoka, Japan.,Research Center for Regenerative Medicine, Fukuoka Dental College, Fukuoka, Japan
| | - Madoka Yasunaga
- Research Center for Regenerative Medicine, Fukuoka Dental College, Fukuoka, Japan.,Section of Orthodontics, Department of Oral Growth and Development, Fukuoka Dental College, Fukuoka, Japan
| | - Masahiro Yamaguchi
- Research Center for Regenerative Medicine, Fukuoka Dental College, Fukuoka, Japan.,Section of Geriatric Dentistry, Department of General Dentistry, Fukuoka Dental College, Fukuoka, Japan
| | - Hiroshi Kajiya
- Research Center for Regenerative Medicine, Fukuoka Dental College, Fukuoka, Japan.,Section of Cellular Physiology, Department of Physiological Science and Molecular Biology, Fukuoka Dental College, Fukuoka, Japan
| | - Hiromitsu Morita
- Section of General Dentistry, Department of General Dentistry, Fukuoka Dental College, Fukuoka, Japan
| | - Masahiro Yoneda
- Section of General Dentistry, Department of General Dentistry, Fukuoka Dental College, Fukuoka, Japan
| | - Takao Hirofuji
- Section of General Dentistry, Department of General Dentistry, Fukuoka Dental College, Fukuoka, Japan
| | - Jun Ohno
- Research Center for Regenerative Medicine, Fukuoka Dental College, Fukuoka, Japan.
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32
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Liu S, You L, Zhao Y, Chang X. Hawthorn Polyphenol Extract Inhibits UVB-Induced Skin Photoaging by Regulating MMP Expression and Type I Procollagen Production in Mice. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2018; 66:8537-8546. [PMID: 30032605 DOI: 10.1021/acs.jafc.8b02785] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Ultraviolet (UV) B radiation can cause skin aging by increasing matrix metalloproteinase (MMP) production and collagen degradation, leading to the formation of wrinkles. This study investigated whether hawthorn polyphenol extract (HPE) protects against UVB-induced skin photoaging using HaCaT human keratinocytes, normal human dermal fibroblasts (HDFs), and mice. Analysis of the phenol composition of HPE by high-performance liquid chromatography-mass spectrometry showed that chlorogenic acid (13.5%), procyanidin B2 (19.2%), and epicatechin (18.8%) collectively accounted for 51.4% of total phenol content and represent the active ingredients of hawthorn fruit. A cell viability assay revealed that HPE treatment promoted cell proliferation in HaCaT cells and HDFs. On the other hand, MMP-1 and type I procollagen production was decreased and increased, respectively, in UVB-exposed cells treated with HPE as compared with those without treatment, as determined by enzyme-linked immunosorbent assay. Hematoxylin and eosin and Weigert staining of dermal tissue specimens from mice demonstrated that HPE also reversed UVB-induced epidermal thickening and dermal damage. The increase in production of reactive oxygen species and decrease in antioxidant enzyme activity as well as the increase in nuclear factor-κB activation and mitogen-activated protein kinase phosphorylation induced by UVB irradiation were reversed by HPE (100 or 300 mg/kg body weight), which also suppressed MMP expression and stimulated the production of type I procollagen in the dorsal skin of UVB-irradiated mice. These results suggest that HPE is a natural product that can prevent UVB radiation-induced skin photoaging.
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Affiliation(s)
- Suwen Liu
- College of Food Science & Technology , Hebei Normal University of Science and Technology , Qinhuangdao , Hebei 066004 , China
| | - Lu You
- College of Food Science & Technology , Hebei Normal University of Science and Technology , Qinhuangdao , Hebei 066004 , China
| | - Yanxue Zhao
- College of Food Science & Technology , Hebei Normal University of Science and Technology , Qinhuangdao , Hebei 066004 , China
| | - Xuedong Chang
- College of Food Science & Technology , Hebei Normal University of Science and Technology , Qinhuangdao , Hebei 066004 , China
- Hebei Yanshan Special Industrial Technology Research Institute , Qinhuangdao , Hebei 066004 , China
- Hebei (Chengde) Hawthorn Industrial Technology Research Institute , Chengde , Hebei 067000 , China
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33
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Rogers LC, Davis RR, Said N, Hollis T, Daniel LW. Blocking LPA-dependent signaling increases ovarian cancer cell death in response to chemotherapy. Redox Biol 2018; 15:380-386. [PMID: 29331665 PMCID: PMC5767563 DOI: 10.1016/j.redox.2018.01.002] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2017] [Revised: 01/02/2018] [Accepted: 01/03/2018] [Indexed: 01/18/2023] Open
Abstract
The paradoxical role of reactive oxygen species in cell death versus cell survival establishes a delicate balance between chemotherapy efficacy and management of detrimental side effects. Normal proliferative signaling requires that cells remain inside a redox range that allows reversible protein oxidation to occur. Shifting the redox environment toward highly reducing or oxidizing states leads to cellular stress and cell death. Reactive oxygen species produced in response to Taxol and cisplatin treatment are necessary for effective cancer cell killing but the same ROS leads to damaging side effects in normal tissues. Combining antioxidants with chemotherapeutics to alleviate the unwanted side effects produces variable and often undesirable effects on cancer treatment. Here, we describe a more targeted method to improve ovarian cancer cell killing without the need for antioxidants. In ovarian cancer cells, lysophosphatidic acid (LPA) is a prominent growth factor that contributes to tumor survival and proliferation. We find that blocking LPA-dependent signaling with a specific receptor antagonist consistently increases cell death in response to both Taxol and cisplatin. We propose that inhibiting the upregulated growth factor-dependent signaling in cancer cells will target chemo-insensitivity, potentially lowering the necessary dose of the drugs and preventing harmful side effects.
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Affiliation(s)
- LeAnn C Rogers
- Dept. of Biochemistry, Center for Structural Biology, Wake Forest School of Medicine, Winston-Salem, NC 27157, United States
| | - Ryan R Davis
- Dept. of Biochemistry, Center for Structural Biology, Wake Forest School of Medicine, Winston-Salem, NC 27157, United States
| | - Naveen Said
- Dept. of Cancer Biology, Wake Forest School of Medicine, Winston-Salem, NC 27157, United States
| | - Thomas Hollis
- Dept. of Biochemistry, Center for Structural Biology, Wake Forest School of Medicine, Winston-Salem, NC 27157, United States.
| | - Larry W Daniel
- Dept. of Biochemistry, Center for Structural Biology, Wake Forest School of Medicine, Winston-Salem, NC 27157, United States.
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34
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Docrat TF, Nagiah S, Krishnan A, Naidoo DB, Chuturgoon AA. Atorvastatin induces MicroRNA-145 expression in HEPG2 cells via regulation of the PI3K/AKT signalling pathway. Chem Biol Interact 2018; 287:32-40. [PMID: 29630879 DOI: 10.1016/j.cbi.2018.04.005] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2017] [Revised: 03/09/2018] [Accepted: 04/05/2018] [Indexed: 02/07/2023]
Abstract
The use of statins as a potential cancer drug has been investigated; however the molecular mechanisms involved in their anti-oxidant, anti-proliferative and anti-cancer effects remain elusive. In our study, we investigated the involvement of downstream mevalonate products that mediate the anti-oxidant and anti-proliferative effects of Atorvastatin (Ato), and its effect on microRNA-145 expression in HepG2 hepatocellular carcinoma cells. An amorphous soluble form of Ato was prepared and found to be cytotoxic in vitro [IC50 (1.2 mM); 48 h]. Atorvastatin induced a dose-dependent increase in cell mortality with a concomitant depletion of intracellular ATP levels (p = 0.005); significantly increased extracellular nitrite levels (p = 0.001) and decreased lipid peroxidation (p = 0.0097) despite a decrease in GSH. The intrinsic apoptotic pathway was activated via increased caspase -9 (p < 0.0001) and -3/7 (p = 0.0003) activities. Increased protein expression of pGSK3-(α/β) (p = 0.0338), p53 (p = 0.0032), Mdm2 (p < 0.0001), with significantly diminished levels of PI3K (p = 0.0013), pAKT (p = 0.0035), and Akt (p = 0.0077), indicated that Ato-mediated cell death occurred via inhibition of the PI3K/Akt pathway. Additionally, the expression of PI3K (p = 0.0001) and c-myc (p = 0.0127) were also downregulated, whilst and miRNA-145 (p = 0.0156) was upregulated. In conclusion our data strongly indicates a plausible mechanism involved in the cytotoxic effects of Ato and is the first study to show that Ato modulates miR-145 expression in hepatocytes. ≤ .
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Affiliation(s)
- Taskeen Fathima Docrat
- Discipline of Medical Biochemistry, School of Laboratory Medicine and Medical Sciences, College of Health Science, University of KwaZulu-Natal, South Africa
| | - Savania Nagiah
- Discipline of Medical Biochemistry, School of Laboratory Medicine and Medical Sciences, College of Health Science, University of KwaZulu-Natal, South Africa
| | - Anand Krishnan
- Discipline of Medical Biochemistry, School of Laboratory Medicine and Medical Sciences, College of Health Science, University of KwaZulu-Natal, South Africa
| | - Dhaneshree B Naidoo
- Discipline of Medical Biochemistry, School of Laboratory Medicine and Medical Sciences, College of Health Science, University of KwaZulu-Natal, South Africa
| | - Anil A Chuturgoon
- Discipline of Medical Biochemistry, School of Laboratory Medicine and Medical Sciences, College of Health Science, University of KwaZulu-Natal, South Africa.
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35
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Cho SO, Kim MH, Kim H. β-Carotene Inhibits Activation of NF-κB, Activator Protein-1, and STAT3 and Regulates Abnormal Expression of Some Adipokines in 3T3-L1 Adipocytes. J Cancer Prev 2018; 23:37-43. [PMID: 29629347 PMCID: PMC5886493 DOI: 10.15430/jcp.2018.23.1.37] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2018] [Revised: 03/19/2018] [Accepted: 03/19/2018] [Indexed: 01/06/2023] Open
Abstract
Background Oxidative stress occurs in white adipose tissue and dysregulates the expression of adipokines secreted from adipocytes. Since adipokines influence inflammation, supplementation with antioxidants might be beneficial for preventing oxidative stress-mediated inflammation in adipocytes and inflammation-associated complications. β-Carotene is the most prominent antioxidant carotenoid and scavenges reactive oxygen species in various tissues. The purpose of this study was to determine whether β-carotene regulates the expression of adipokines, such as adiponectin, monocyte chemoattractant protein-1 (MCP-1), and regulated on activation, normal T cell expressed and secreted (RANTES) in 3T3-L1 adipocytes treated with glucose/glucose oxidase (G/GO). Methods 3T3-L1 adipocytes were cultured with or without β-carotene and treated with G/GO, which produces H2O2. mRNA and protein levels in the medium were determined by a real-time PCR and an ELISA. DNA binding activities of transcription factors were assessed using an electrophoretic mobility shift assay. Results G/GO treatment increased DNA binding affinities of redox-sensitive transcription factors, such as NF-κB, activator protein-1 (AP-1), and STAT3. G/GO treatment reduced the expression of adiponectin and increased the expression of MCP-1 and RANTES. G/GO-induced activations of NF-κB, AP-1, and STAT3 were inhibited by β-carotene. G/GO-induced dysregulation of adiponectin, MCP-1, and RANTES were significantly recovered by treatment with β-carotene. Conclusions β-Carotene inhibits oxidative stress-induced inflammation by suppressing pro-inflammatory adipokines MCP-1 and RANTES, and by enhancing adiponectin in adipocytes. β-Carotene may be beneficial for preventing oxidative stress-mediated inflammation, which is related to adipokine dysfunction.
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Affiliation(s)
- Soon Ok Cho
- Department of Pharmacology, Yonsei University College of Medicine, Seoul, Korea
| | - Min-Hyun Kim
- Department of Molecular and Integrative Physiology, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Hyeyoung Kim
- Department of Food and Nutrition, Brain Korea 21 PLUS Project, College of Human Ecology, Yonsei University, Seoul, Korea
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36
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Rodic S, Vincent MD. Reactive oxygen species (ROS) are a key determinant of cancer's metabolic phenotype. Int J Cancer 2017; 142:440-448. [PMID: 28940517 DOI: 10.1002/ijc.31069] [Citation(s) in RCA: 113] [Impact Index Per Article: 16.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2017] [Revised: 08/28/2017] [Accepted: 09/11/2017] [Indexed: 12/21/2022]
Abstract
Cancer cells exhibit a wide range of metabolic phenotypes, ranging from strict aerobic glycolysis to increased mitochondrial respiration. The cause and utility of this metabolic variation is poorly understood. Given that cancer cells experience heavy selection within their microenvironment, survival requires metabolic adaptation to both extracellular and intracellular conditions. Herein, we suggest that reactive oxygen species (ROS) are a key determinant of cancer's metabolic phenotype. Intracellular ROS levels can be modified by an assortment of critical parameters including oxygenation, glucose availability and growth factors. ROS act as integrators of environmental information as well as downstream effectors of signaling pathways. Maintaining ROS within a narrow range allows malignant cells to enhance growth and invasion while limiting their apoptotic susceptibility. Cancer cells actively modify their metabolism to optimize intracellular ROS levels and thereby improve survival. Furthermore, we highlight distinct metabolic phenotypes in response to oxidative stress and their tumorigenic drivers.
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Affiliation(s)
- Stefan Rodic
- Schulich School of Medicine and Dentistry, 1151 Richmond St, Western University, London, ON, Canada
| | - Mark David Vincent
- Schulich School of Medicine and Dentistry, 1151 Richmond St, Western University, London, ON, Canada.,Department of Medical Oncology, London Regional Cancer Program, 800 Commissioners Road East, London, ON, Canada
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37
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Raza MH, Siraj S, Arshad A, Waheed U, Aldakheel F, Alduraywish S, Arshad M. ROS-modulated therapeutic approaches in cancer treatment. J Cancer Res Clin Oncol 2017. [PMID: 28647857 DOI: 10.1007/s00432-017-2464-9] [Citation(s) in RCA: 176] [Impact Index Per Article: 25.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
PURPOSE Reactive oxygen species (ROS) are produced in cancer cells as a result of increased metabolic rate, dysfunction of mitochondria, elevated cell signaling, expression of oncogenes and increased peroxisome activities. Certain level of ROS is required by cancer cells, above or below which lead to cytotoxicity in cancer cells. This biochemical aspect can be exploited to develop novel therapeutic agents to preferentially and selectively target cancer cells. METHODS We searched various electronic databases including PubMed, Web of Science, and Google Scholar for peer-reviewed english-language articles. Selected articles ranging from research papers, clinical studies, and review articles on the ROS production in living systems, its role in cancer development and cancer treatment, and the role of microbiota in ROS-dependent cancer therapy were analyzed. RESULTS This review highlights oxidative stress in tumors, underlying mechanisms of different relationships of ROS and cancer cells, different ROS-mediated therapeutic strategies and the emerging role of microbiota in cancer therapy. CONCLUSION Cancer cells exhibit increased ROS stress and disturbed redox homeostasis which lead to ROS adaptations. ROS-dependent anticancer therapies including ROS scavenging anticancer therapy and ROS boosting anticancer therapy have shown promising results in vitro as well as in vivo. In addition, response to cancer therapy is modulated by the human microbiota which plays a critical role in systemic body functions.
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Affiliation(s)
- Muhammad Hassan Raza
- Department of Bioinformatics and Biotechnology, International Islamic University, Sector H-10, Islamabad, 44000, Pakistan.
| | - Sami Siraj
- Institute of Basic Medical Sciences, Khyber Medical University (KMU), Peshawar, 25000, Pakistan
| | - Abida Arshad
- Department of Biology, PMAS-Arid Agriculture University, Rawalpindi, 46000, Pakistan
| | - Usman Waheed
- Department of Pathology and Blood Bank, Shaheed Zulfiqar Ali Bhutto Medical University, Islamabad, 44000, Pakistan
| | - Fahad Aldakheel
- Department of Clinical Laboratory Medicine, College of Applied Medical Sciences, King Saud University, Riyadh, 11564, Saudi Arabia
| | - Shatha Alduraywish
- Department of Family and Community Medicine, College of Medicine, King Saud University, Riyadh, 11564, Saudi Arabia
| | - Muhammad Arshad
- Department of Bioinformatics and Biotechnology, International Islamic University, Sector H-10, Islamabad, 44000, Pakistan
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Ruiz Lopez AM, Roche SL, Wyse Jackson AC, Moloney JN, Byrne AM, Cotter TG. Pro-survival redox signalling in progesterone-mediated retinal neuroprotection. Eur J Neurosci 2017; 46:1663-1672. [PMID: 28493650 DOI: 10.1111/ejn.13604] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2017] [Revised: 05/04/2017] [Accepted: 05/04/2017] [Indexed: 01/05/2023]
Abstract
Retinitis pigmentosa (RP) is a group of hereditary retinal diseases, characterised by photoreceptor cell loss. Despite a substantial understanding of the mechanisms leading to cell death, an effective therapeutic strategy is sought. Our laboratory has previously demonstrated the neuroprotective properties of Norgestrel, a progesterone analogue, in the degenerating retina, mediated in part by the neurotrophic factor basic fibroblast growth factor (bFGF). In other retinal studies, we have also presented a pro-survival role for reactive oxygen species (ROS), downstream of bFGF. Thus, we hypothesized that Norgestrel utilises bFGF-driven ROS production to promote photoreceptor survival. Using the 661W photoreceptor-like cell line, we now show that Norgestrel, working through progesterone receptor membrane complex 1 (PGRMC1); generates an early burst of pro-survival bFGF-induced ROS. Using the rd10 mouse model of RP, we confirm that Norgestrel induces a similar early pro-survival increase in retinal ROS. Norgestrel-driven protection in the rd10 retina was attenuated in the presence of antioxidants. This study therefore presents an essential role for ROS signalling in Norgestrel-mediated neuroprotection in vitro and demonstrates that Norgestrel employs a similar pro-survival mechanism in the degenerating retina.
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Affiliation(s)
- Ana M Ruiz Lopez
- Cell Development and Disease Laboratory, Biochemistry Department, Biosciences Institute, University College Cork, Cork, Ireland
| | - Sarah L Roche
- Cell Development and Disease Laboratory, Biochemistry Department, Biosciences Institute, University College Cork, Cork, Ireland
| | - Alice C Wyse Jackson
- Cell Development and Disease Laboratory, Biochemistry Department, Biosciences Institute, University College Cork, Cork, Ireland
| | - Jennifer N Moloney
- Cell Development and Disease Laboratory, Biochemistry Department, Biosciences Institute, University College Cork, Cork, Ireland
| | - Ashleigh M Byrne
- Cell Development and Disease Laboratory, Biochemistry Department, Biosciences Institute, University College Cork, Cork, Ireland
| | - Thomas G Cotter
- Cell Development and Disease Laboratory, Biochemistry Department, Biosciences Institute, University College Cork, Cork, Ireland
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O'Sullivan SA, Velasco-Estevez M, Dev KK. Demyelination induced by oxidative stress is regulated by sphingosine 1-phosphate receptors. Glia 2017; 65:1119-1136. [PMID: 28375547 DOI: 10.1002/glia.23148] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2016] [Revised: 03/02/2017] [Accepted: 03/20/2017] [Indexed: 01/14/2023]
Abstract
Oxidative stress is a pathological condition defined as an imbalance between production and removal of reactive oxygen species. This process causes structural cell damage, disrupts DNA repair and induces mitochondrial dysfunction. Many in vitro studies have used direct bolus application of H2 O2 to investigate the role of oxidative stress in cell culture. In this study, using mouse organotypic cerebellar slice cultures, the effects of H2 O2 -induced oxidative stress on myelination state were examined, using bolus concentrations of H2 O2 (0.1-1 mM) and low-continuous H2 O2 (∼20 μM) generated from glucose oxidase and catalase (GOX-CAT). Using these models, the potential therapeutic effects of pFTY720, an oral therapy used in multiple sclerosis, was also examined. We found bolus treatment of H2 O2 (0.5 mM) and, for the first time, low-continuous H2 O2 (GOX-CAT) to induce demyelination in organotypic slices. Both bolus H2 O2 and GOX-CAT treatments significantly decreased vimentin expression in these slice cultures as well as increased cell death in isolated astrocyte cultures. Importantly, pre-treatment with pFTY720 significantly attenuated both bolus H2 O2 and GOX-CAT-induced demyelination and the GOX-CAT-induced decrease in vimentin in cerebellar slices, without altering levels of the proinflammatory cytokines such as IL-6 and CX3CL1. We also observed increased SMI-32 immunoreactivity in the white matter tract induced by GOX-CAT indicating axonal damage, which was remarkably attenuated by pFTY720. Taken together, this data establishes a novel GOX-CAT model of demyelination and demonstrates that pFTY720 can act independently of inflammatory cytokines to attenuate decreases in vimentin, as well as axonal damage and demyelination induced by oxidative stress.
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Affiliation(s)
- Sinead A O'Sullivan
- Drug Development, School of Medicine, Trinity College Dublin, Dublin, Ireland
| | | | - Kumlesh K Dev
- Drug Development, School of Medicine, Trinity College Dublin, Dublin, Ireland
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Haseeb A, Ansari MY, Haqqi TM. Harpagoside suppresses IL-6 expression in primary human osteoarthritis chondrocytes. J Orthop Res 2017; 35:311-320. [PMID: 27082319 PMCID: PMC5065736 DOI: 10.1002/jor.23262] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/30/2015] [Accepted: 04/05/2016] [Indexed: 02/04/2023]
Abstract
There is growing evidence in support of the involvement of inflammatory response in the pathogenesis of osteoarthritis (OA). Harpagoside, one of the bioactive components of Harpagophytum procumbens (Hp), has been shown to possess anti-inflammatory properties. Here we used an in vitro model of inflammation in OA to investigate the potential of harpagoside to suppress the production of inflammatory cytokines/chemokines such as IL-6 and matrix degrading proteases. We further investigated the likely targets of harpagoside in primary human OA chondrocytes. OA chondrocytes were pre-treated with harpagoside before stimulation with IL-1β. mRNA expression profile of 92 cytokines/chemokines was determined using TaqMan Human Chemokine PCR Array. Expression levels of selected mRNAs were confirmed using TaqMan assays. Protein levels of IL-6 and MMP-13 were assayed by ELISA and immunoblotting. Total protein levels and phosphorylation of signaling proteins were determined by immunoblotting. Cellular localization of IL-6 and c-Fos was performed by immunofluorescence and confocal microscopy. DNA binding activity of c-FOS/AP-1 was determined by ELISA. Harpagoside significantly altered the global chemokine expression profile in IL-1β-stimulated OA chondrocytes. Expression of IL-6 was highly induced by IL-1β, which was significantly inhibited by pre-treatment of OA chondrocytes with harpagoside. Harpagoside did not inhibit the IL-1β-induced activation of NF-κB and C/EBPβ transcription factors but suppressed the IL-1β-triggered induction, phosphorylation, and DNA binding activity of c-FOS, one of the main components of AP-1 transcription factors. Further, harpagoside significantly inhibited the expression of MMP-13 in OA chondrocytes under pathological conditions. siRNA-mediated knockdown of IL-6 resulted in suppressed expression and secretion of MMP-13 directly linking the role of IL-6 with MMP-13 expression. Taken together, the present study suggests that harpagoside exerts a significant anti-inflammatory effect by inhibiting the inflammatory stimuli mediated by suppressing c-FOS/AP-1 activity in OA chondrocytes under pathological conditions. © 2016 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res 35:311-320, 2017.
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Affiliation(s)
- Abdul Haseeb
- Department of Anatomy and Neurobiology, North East Ohio Medical University, 4209 St. Rt. 44, Rootstown, OH 44272, USA
| | - Mohammad Yunus Ansari
- Department of Anatomy and Neurobiology, North East Ohio Medical University, 4209 St. Rt. 44, Rootstown, OH 44272, USA
| | - Tariq M. Haqqi
- Department of Anatomy and Neurobiology, North East Ohio Medical University, 4209 St. Rt. 44, Rootstown, OH 44272, USA,Address for correspondence: Tariq M Haqqi, PhD, Department of Anatomy and Neurobiology, 4209 St. Rt. 44, Room 144, Rootstown, OH 44272, USA, , Phone: 330-325-6704, Fax: 330-325-5916
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Hosseinzadeh A, Kamrava SK, Joghataei MT, Darabi R, Shakeri-Zadeh A, Shahriari M, Reiter RJ, Ghaznavi H, Mehrzadi S. Apoptosis signaling pathways in osteoarthritis and possible protective role of melatonin. J Pineal Res 2016; 61:411-425. [PMID: 27555371 DOI: 10.1111/jpi.12362] [Citation(s) in RCA: 240] [Impact Index Per Article: 30.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/19/2016] [Accepted: 08/22/2016] [Indexed: 12/14/2022]
Abstract
Osteoarthritis (OA) is a degenerative joint disease characterized by progressive erosion of articular cartilage. As chondrocytes are the only cell type forming the articular cartilage, their gradual loss is the main cause of OA. There is a substantial body of published research that suggests reactive oxygen species (ROS) are major causative factors for chondrocyte damage and OA development. Oxidative stress elicited by ROS is capable of oxidizing and subsequently disrupting cartilage homeostasis, promoting catabolism via induction of cell death and damaging numerous components of the joint. IL-1β and TNF-α are crucial inflammatory factors that play pivotal roles in the pathogenesis of OA. In this process, the mitochondria are the major source of ROS production in cells, suggesting a role of mitochondrial dysfunction in this type of arthritis. This may also be promoted by inflammatory cytokines such as IL-1β and TNF-α which contribute to chondrocyte death. In patients with OA, the expression of endoplasmic reticulum (ER) stress-associated molecules is positively correlated with cartilage degeneration. Melatonin and its metabolites are broad-spectrum antioxidants and free radical scavengers which regulate a variety of molecular pathways such as inflammation, proliferation, apoptosis, and metastasis in different pathophysiological situations. Herein, we review the effects of melatonin on OA, focusing on its ability to regulate apoptotic processes and ER and mitochondrial activity. We also evaluate likely protective effects of melatonin on OA pathogenesis.
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Affiliation(s)
- Azam Hosseinzadeh
- Department of Pharmacology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Seyed Kamran Kamrava
- ENT and Head & Neck Research Center, Hazrate Rasoul Akram Hospital, Iran University of Medical Sciences, Tehran, Iran
| | | | - Radbod Darabi
- Center for Stem Cell and Regenerative Medicine (CSCRM), Brown Foundation Institute of Molecular Medicine (IMM), University of Texas Health Science Center at Houston, Houston, TX, USA
| | - Ali Shakeri-Zadeh
- Medical Physics Department, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Mansour Shahriari
- Ophthalmology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Russel J Reiter
- Department of Cellular and Structural Biology, The University of Texas Health Science Center, San Antonio, TX, USA
| | | | - Saeed Mehrzadi
- Department of Pharmacology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran. ,
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Koo MA, Kim BJ, Lee MH, Kwon BJ, Kim MS, Seon GM, Kim D, Nam KC, Wang KK, Kim YR, Park JC. Controlled Delivery of Extracellular ROS Based on Hematoporphyrin-Incorporated Polyurethane Film for Enhanced Proliferation of Endothelial Cells. ACS APPLIED MATERIALS & INTERFACES 2016; 8:28448-28457. [PMID: 27696825 DOI: 10.1021/acsami.6b07628] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The principle of photodynamic treatment (PDT) involves the administration of photosensitizer (PS) at diseased tissues, followed by light irradiation to produce reactive oxygen species (ROS). In cells, a moderate increase in ROS plays an important role as signaling molecule to promote cell proliferation, whereas a severe increase of ROS causes cell damage. Previous studies have shown that low levels of ROS stimulate cell growth through PS drugs-treating PDT and nonthermal plasma treatment. However, these methods have side effects which are associated with low tissue selectivity and remaining of PS residues. To overcome such shortcomings, we designed hematoporphyrin-incorporated polyurethane (PU) film induced generation of extracellular ROS with singlet oxygen and free radicals. The film can easily control ROS production rate by regulating several parameters including light dose, PS dose. Also, its use facilitates targeted delivery of ROS to the specific lesion. Our study demonstrated that extracellular ROS could induce the formation of intracellular ROS. In vascular endothelial cells, a moderated increase in intracellular ROS also stimulated cell proliferation and cell cycle progression by accurate control of optimum levels of ROS with hematoporphyrin-incorporated polymer films. This modulation of cellular growth is expected to be an effective strategy for the design of next-generation PDT.
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Affiliation(s)
| | - Bong-Jin Kim
- Department of Chemistry, Yonsei University , 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea
| | | | | | | | | | | | - Ki Chang Nam
- Department of Medical Engineering, Dongguk University College of Medicine , Gyeonggi-do 10326, Republic of Korea
| | - Kang-Kyun Wang
- Department of Chemistry, Yonsei University , 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea
| | - Yong-Rok Kim
- Department of Chemistry, Yonsei University , 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea
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Abstract
SIGNIFICANCE Breast cancer is a unique disease characterized by heterogeneous cell populations causing roadblocks in therapeutic medicine, owing to its complex etiology and primeval understanding of the biology behind its genesis, progression, and sustenance. Globocan statistics indicate over 1.7 million new breast cancer diagnoses in 2012, accounting for 25% of all cancer morbidities. RECENT ADVANCES Despite these dismal statistics, the introduction of molecular gene signature platforms, progressive therapeutic approaches in diagnosis, and management of breast cancer has led to more effective treatment strategies and control measures concurrent with an equally reassuring decline in the mortality rate. CRITICAL ISSUES However, an enormous body of research in this area is requisite as high mortality associated with metastatic and/or drug refractory tumors continues to present a therapeutic challenge. Despite advances in systemic chemotherapy, the median survival of patients harboring metastatic breast cancers continues to be below 2 years. FUTURE DIRECTIONS Hence, a massive effort to scrutinize and evaluate chemotherapeutics on the basis of the molecular classification of these cancers is undertaken with the objective to devise more attractive and feasible approaches to treat breast cancers and improve patients' quality of life. This review aims to summarize the current understanding of the biology of breast cancer as well as challenges faced in combating breast cancer, with special emphasis on the current battery of treatment strategies. We will also try and gain perspective from recent encounters on novel findings responsible for the progression and metastatic transformation of breast cancer cells in an endeavor to develop more targeted treatment options. Antioxid. Redox Signal. 25, 337-370.
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Affiliation(s)
- Deepika Raman
- 1 Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore , Singapore, Singapore
| | - Chuan Han Jonathan Foo
- 2 NUS Graduate School for Integrative Sciences and Engineering, National University of Singapore , Singapore, Singapore
| | - Marie-Veronique Clement
- 2 NUS Graduate School for Integrative Sciences and Engineering, National University of Singapore , Singapore, Singapore .,3 Department of Biochemistry, Yong Loo Lin School of Medicine, National University of Singapore , Singapore, Singapore
| | - Shazib Pervaiz
- 1 Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore , Singapore, Singapore .,2 NUS Graduate School for Integrative Sciences and Engineering, National University of Singapore , Singapore, Singapore .,4 National University Cancer Institute , NUHS, Singapore, Singapore .,5 School of Biomedical Sciences, Curtin University , Perth, Australia
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Abstract
Age is the strongest independent risk factor for the development of osteoarthritis (OA) and for many years this was assumed to be due to repetitive microtrauma of the joint surface over time, the so-called 'wear and tear' arthritis. As our understanding of OA pathogenesis has become more refined, it has changed our appreciation of the role of ageing on disease. Cartilage breakdown in disease is not a passive process but one involving induction and activation of specific matrix-degrading enzymes; chondrocytes are exquisitely sensitive to changes in the mechanical, inflammatory and metabolic environment of the joint; cartilage is continuously adapting to these changes by altering its matrix. Ageing influences all of these processes. In this review, we will discuss how ageing affects tissue structure, joint use and the cellular metabolism. We describe what is known about pathways implicated in ageing in other model systems and discuss the potential value of targeting these pathways in OA.
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Choi HS, Park ED, Park Y, Han SH, Hong KB, Suh HJ. Topical application of spent coffee ground extracts protects skin from ultraviolet B-induced photoaging in hairless mice. Photochem Photobiol Sci 2016; 15:779-90. [PMID: 27195822 DOI: 10.1039/c6pp00045b] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The aim of this study was to evaluate the protective effect of spent coffee ground (SCG) on ultraviolet (UV) B-induced photoaging in hairless mice. The oil fraction (OSCG) and ethanol extract (ESCG) of SCG were prepared from SCG. OSCG contained a much higher level of caffeine (547.32 ± 1.68 μg mg(-1)) when compared to the sum of its chlorogenic acid derivatives (∼119 μg mg(-1)), and pyrazines were the major aromatic compounds in OSCG. OSCG effectively inhibited the UVB-induced increase in intracellular reactive oxygen species in HaCaT cells. Topical application of OSCG or ESCG significantly reduced the UVB-induced wrinkle formation in mice dorsal skin. The combined application of OSCG and ESCG (OEH) led to a decrease in the wrinkle area by over 35% when compared with the UVB-treated control (UVBC). Epidermal thickness was also reduced by 40%. This result was connected to the significant reduction in transdermal water loss (27%) and erythema formation (48%) that result from UVB irradiation. Polarization-sensitive optical coherence tomography (PS-OCT) and antibody-based histological analyses showed that OSCG and ESCG effectively suppressed the UVB-induced decrease in collagen content. The level of type 1 collagen (COL1) in the OEH group was enhanced by around 40% compared with the UVB control group (UVBC). This was attributed to the down-regulation of matrix metalloproteinases (MMP2, 9, and 13), which are known to be responsible for collagen destruction. Our results indicate that topical treatment with OSCG/ESCG protects mouse skin from UVB-induced photoaging by down-regulating MMPs; therefore, suggesting the potential of SCG extracts as a topical anti-photoaging agent.
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Affiliation(s)
- Hyeon-Son Choi
- Department of Food Science and Technology, Seoul Women's University, Seoul 01797, Republic of Korea
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Wood ST, Long DL, Reisz JA, Yammani RR, Burke EA, Klomsiri C, Poole LB, Furdui CM, Loeser RF. Cysteine-Mediated Redox Regulation of Cell Signaling in Chondrocytes Stimulated With Fibronectin Fragments. Arthritis Rheumatol 2016; 68:117-26. [PMID: 26314228 DOI: 10.1002/art.39326] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2014] [Accepted: 08/06/2015] [Indexed: 12/28/2022]
Abstract
OBJECTIVE Oxidative posttranslational modifications of intracellular proteins can potentially regulate signaling pathways relevant to cartilage destruction in arthritis. In this study, oxidation of cysteine residues to form sulfenic acid (S-sulfenylation) was examined in osteoarthritic (OA) chondrocytes and investigated in normal chondrocytes as a mechanism by which fragments of fibronectin (FN-f) stimulate chondrocyte catabolic signaling. METHODS Chondrocytes isolated from OA and normal human articular cartilage were analyzed using analogs of dimedone that specifically and irreversibly react with protein S-sulfenylated cysteines. Global S-sulfenylation was measured in cell lysates with and without FN-f stimulation by immunoblotting and in fixed cells by confocal microscopy. S-sulfenylation in specific proteins was identified by mass spectroscopy and confirmed by immunoblotting. Src activity was measured in live cells using a fluorescence resonance energy transfer biosensor. RESULTS Proteins in chondrocytes isolated from OA cartilage were found to have elevated basal levels of S-sulfenylation relative to those of chondrocytes from normal cartilage. Treatment of normal chondrocytes with FN-f induced increased levels of S-sulfenylation in multiple proteins, including the tyrosine kinase Src. FN-f treatment also increased the levels of Src activity. Pretreatment with dimedone to alter S-sulfenylation function or with Src kinase inhibitors inhibited FN-f-induced production of matrix metalloproteinase 13. CONCLUSION These results demonstrate for the first time the presence of oxidative posttranslational modification of proteins in human articular chondrocytes by S-sulfenylation. Due to the ability to regulate the activity of a number of cell signaling pathways, including catabolic mediators induced by fibronectin fragments, S-sulfenylation may contribute to cartilage destruction in OA and warrants further investigation.
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Affiliation(s)
- Scott T Wood
- University of North Carolina School of Medicine, Chapel Hill
| | - David L Long
- Wake Forest University School of Medicine, Winston-Salem, North Carolina
| | - Julie A Reisz
- Wake Forest University School of Medicine, Winston-Salem, North Carolina
| | | | - Elizabeth A Burke
- Wake Forest University School of Medicine, Winston-Salem, North Carolina
| | - Chananat Klomsiri
- Wake Forest University School of Medicine, Winston-Salem, North Carolina
| | - Leslie B Poole
- Wake Forest University School of Medicine, Winston-Salem, North Carolina
| | - Cristina M Furdui
- Wake Forest University School of Medicine, Winston-Salem, North Carolina
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Ghandadi M, Behravan J, Abnous K, Mosaffa F. Reactive Oxygen Species Mediate TNF-⍺ Cytotoxic Effects in the Multidrug-Resistant Breast Cancer Cell Line MCF-7/MX. Oncol Res Treat 2015; 39:54-9. [DOI: 10.1159/000442144] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2015] [Accepted: 10/22/2015] [Indexed: 11/19/2022]
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Kozarski M, Klaus A, Jakovljevic D, Todorovic N, Vunduk J, Petrović P, Niksic M, Vrvic MM, van Griensven L. Antioxidants of Edible Mushrooms. Molecules 2015; 20:19489-525. [PMID: 26516828 PMCID: PMC6331815 DOI: 10.3390/molecules201019489] [Citation(s) in RCA: 157] [Impact Index Per Article: 17.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2015] [Revised: 10/19/2015] [Accepted: 10/21/2015] [Indexed: 12/14/2022] Open
Abstract
Oxidative stress caused by an imbalanced metabolism and an excess of reactive oxygen species (ROS) lead to a range of health disorders in humans. Our endogenous antioxidant defense mechanisms and our dietary intake of antioxidants potentially regulate our oxidative homeostasis. Numerous synthetic antioxidants can effectively improve defense mechanisms, but because of their adverse toxic effects under certain conditions, preference is given to natural compounds. Consequently, the requirements for natural, alternative sources of antioxidant foods identified in edible mushrooms, as well as the mechanistic action involved in their antioxidant properties, have increased rapidly. Chemical composition and antioxidant potential of mushrooms have been intensively studied. Edible mushrooms might be used directly in enhancement of antioxidant defenses through dietary supplementation to reduce the level of oxidative stress. Wild or cultivated, they have been related to significant antioxidant properties due to their bioactive compounds, such as polyphenols, polysaccharides, vitamins, carotenoids and minerals. Antioxidant and health benefits, observed in edible mushrooms, seem an additional reason for their traditional use as a popular delicacy food. This review discusses the consumption of edible mushrooms as a powerful instrument in maintaining health, longevity and life quality.
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Affiliation(s)
- Maja Kozarski
- Department for Chemistry and Biochemistry, Faculty of Agriculture, University of Belgrade, Nemanjina 6, Belgrade 11080, Serbia.
| | - Anita Klaus
- Department for Industrial Microbiology, Faculty of Agriculture, University of Belgrade, Nemanjina 6, Belgrade 11080, Serbia.
| | - Dragica Jakovljevic
- Institute of Chemistry, Technology and Metallurgy, University of Belgrade, Njegoseva 12, Belgrade 11001, Serbia.
| | - Nina Todorovic
- Institute of Chemistry, Technology and Metallurgy, University of Belgrade, Njegoseva 12, Belgrade 11001, Serbia.
| | - Jovana Vunduk
- Department for Industrial Microbiology, Faculty of Agriculture, University of Belgrade, Nemanjina 6, Belgrade 11080, Serbia.
| | - Predrag Petrović
- Institute of Chemical Engineering, Faculty of Technology and Metallurgy, University of Belgrade, Karnegijeva 4, Belgrade 11060, Serbia.
| | - Miomir Niksic
- Department for Industrial Microbiology, Faculty of Agriculture, University of Belgrade, Nemanjina 6, Belgrade 11080, Serbia.
| | - Miroslav M Vrvic
- Institute of Chemistry, Technology and Metallurgy, University of Belgrade, Njegoseva 12, Belgrade 11001, Serbia.
- Faculty of Chemistry, University of Belgrade, Studentski trg 12-16, Belgrade 11000, Serbia.
| | - Leo van Griensven
- Plant Research International, Wageningen University and Research Centre, Droevendaalsesteeg 1, Wageningen 6700 AA, The Netherlands.
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Spent coffee ground extract suppresses ultraviolet B-induced photoaging in hairless mice. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2015; 153:164-72. [PMID: 26410040 DOI: 10.1016/j.jphotobiol.2015.09.017] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2015] [Revised: 08/25/2015] [Accepted: 09/15/2015] [Indexed: 01/21/2023]
Abstract
The aim of this study is to evaluate the effect of spent coffee ground (SCG) ethanol extract on UVB-induced skin aging in hairless mice. An ethanol extract of SCG (ESCG) was prepared using the residue remaining after extraction of oil from roasted SCG. High performance liquid chromatography (HPLC) analysis showed that the content of caffeine (41.58 ± 0.54 μg/mg) was higher than that of chlorogenic acid isomers (~9.17 μg/mg) in ESCG. ESCG significantly decreased the UVB-induced intracellular reactive oxygen species in HaCaT cells. UVB-induced wrinkle formation in mice dorsal skin was effectively reduced by ESCG administration; high dose of ESCG (5 g/L) caused the reduction of wrinkle area by 30% compared with UVB-treated control (UVBC). This result correlated with the ESCG-mediated decrease in epidermis thickness (25%). In addition, ESCG administration significantly reduced transdermal water loss (20%) and erythema formation (35%) derived from UVB exposure. Collagen type I (COL-1) level in dorsal skin was effectively recovered by ESCG administration. These results were supported by down-regulation of collagen-degrading matrix metalloproteinase 2 (MMP2) and 9 (MMP9) expressions. Our results indicate that ESCG protects mouse skin from UVB-induced photoaging by suppressing the expression of matrix metalloproteinases. Our study suggests that ESCG may be anti-photoaging agent.
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Gao YF, Yuan F, Liu J, Li LP, He YC, Gao RJ, Cai YD, Jiang Y. Identification of New Candidate Genes and Chemicals Related to Esophageal Cancer Using a Hybrid Interaction Network of Chemicals and Proteins. PLoS One 2015; 10:e0129474. [PMID: 26058041 PMCID: PMC4461353 DOI: 10.1371/journal.pone.0129474] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2014] [Accepted: 05/10/2015] [Indexed: 01/04/2023] Open
Abstract
Cancer is a serious disease responsible for many deaths every year in both developed and developing countries. One reason is that the mechanisms underlying most types of cancer are still mysterious, creating a great block for the design of effective treatments. In this study, we attempted to clarify the mechanism underlying esophageal cancer by searching for novel genes and chemicals. To this end, we constructed a hybrid network containing both proteins and chemicals, and generalized an existing computational method previously used to identify disease genes to identify new candidate genes and chemicals simultaneously. Based on jackknife test, our generalized method outperforms or at least performs at the same level as those obtained by a widely used method - the Random Walk with Restart (RWR). The analysis results of the final obtained genes and chemicals demonstrated that they highly shared gene ontology (GO) terms and KEGG pathways with direct and indirect associations with esophageal cancer. In addition, we also discussed the likelihood of selected candidate genes and chemicals being novel genes and chemicals related to esophageal cancer.
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Affiliation(s)
- Yu-Fei Gao
- Department of Surgery, China-Japan Union Hospital of Jilin University, Changchun 130033, People’s Republic of China
| | - Fei Yuan
- Institute of Health Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200031, People’s Republic of China
| | - Junbao Liu
- Department of Surgery, China-Japan Union Hospital of Jilin University, Changchun 130033, People’s Republic of China
| | - Li-Peng Li
- Department of Surgery, China-Japan Union Hospital of Jilin University, Changchun 130033, People’s Republic of China
| | - Yi-Chun He
- Department of Surgery, China-Japan Union Hospital of Jilin University, Changchun 130033, People’s Republic of China
| | - Ru-Jian Gao
- Department of Surgery, China-Japan Union Hospital of Jilin University, Changchun 130033, People’s Republic of China
| | - Yu-Dong Cai
- College of Life Science, Shanghai University, Shanghai 200444, People’s Republic of China
| | - Yang Jiang
- Department of Surgery, China-Japan Union Hospital of Jilin University, Changchun 130033, People’s Republic of China
- * E-mail:
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