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Chopra H, Bibi S, Islam F, Ahmad SU, Olawale OA, Alhumaydhi FA, Marzouki R, Baig AA, Emran TB. Emerging Trends in the Delivery of Resveratrol by Nanostructures: Applications of Nanotechnology in Life Sciences. JOURNAL OF NANOMATERIALS 2022; 2022:1-17. [DOI: 10.1155/2022/3083728] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
Abstract
Resveratrol (RES) is a stilbene group of natural polyphenolic compounds in trees, peanuts, and grapes. RES is revealed with anticancer, antioxidant, anti-inflammatory, and cardioprotective effects. Though it is proven with prominent therapeutic activity, low aqueous solubility, poor bioavailability, and short half-life had hindered its use to exploit the potential. Also, the first-pass metabolism and undergoing enterohepatic recirculation are obscure in the minds of researchers for their in vitro studies. Many approaches have been investigated and shown promising results in manipulating their physicochemical properties to break this barrier. Nanocarriers are one of them to reduce the first-pass metabolism and to overcome other hurdles. This article reviews and highlights such encapsulation technologies. Nanoencapsulated RES improves in vitro antioxidant effect, and this review also highlights the new strategies and the concept behind how resveratrol can be handled and implemented with better therapeutic efficacy.
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Affiliation(s)
- Hitesh Chopra
- Chitkara College of Pharmacy, Chitkara University, Punjab 140401, India
| | - Shabana Bibi
- Yunnan Herbal Laboratory, College of Ecology and Environmental Sciences, Yunnan University, Kunming, 650091 Yunnan, China
- The International Joint Research Center for Sustainable Utilization of Cordyceps Bioresources in China and Southeast Asia, Yunnan University, Kunming, 650091 Yunnan, China
| | - Fahadul Islam
- Department of Pharmacy, Faculty of Allied Health Sciences, Daffodil International University, Dhaka 1207, Bangladesh
| | - Syed Umair Ahmad
- Department of Bioinformatics, Hazara University, Mansehra, Pakistan
| | | | - Fahad A. Alhumaydhi
- Department of Medical Laboratories, College of Applied Medical Sciences, Qassim University, Buraydah 52571, Saudi Arabia
| | - Riadh Marzouki
- Chemistry Department, College of Science, King Khalid University, Abha 61413, Saudi Arabia
- Chemistry Department, Faculty of Sciences of Sfax, University of Sfax, Tunisia
| | - Atif Amin Baig
- Unit of Biochemistry, Faculty of Medicine, University Sultan Zainal Abidin, Kuala Terengganu 20400, Malaysia
| | - Talha Bin Emran
- Department of Pharmacy, BGC Trust University Bangladesh, Chittagong 4381, Bangladesh
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Zhang X, Wan F, You W, Tan X, Liu G, Jin Q, Wei C, Liu X, Zhao H, Liu Y, Zhang C. Comparison of apoptosis between bovine subcutaneous and intramuscular adipocytes by resveratrol via SIRT1. Anim Biotechnol 2019; 31:538-546. [PMID: 31287374 DOI: 10.1080/10495398.2019.1636808] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
A better understanding of the differential mechanisms regulating the deposition and release of fat between intramuscular and external adipose tissues is very important to the quality of beef. Resveratrol is a natural activator of sirtuin type 1 (SIRT1), a NAD-dependent deacetylase involved in regulating the cell cycle, energy homeostasis and apoptosis in adipose tissue. To compare the molecular mechanisms underlying differential apoptosis in bovine intramuscular and subcutaneous adipocytes, we evaluated the effect of resveratrol on differentiated adipocytes. We found that resveratrol-induced apoptosis in bovine adipocytes by regulating SIRT1 activity. In addition, we report that bovine intramuscular and subcutaneous adipocytes exhibited differential responses to resveratrol. In particular, gene and protein expression of Bcl-2 was higher, whereas that of SIRT1, AMPKα, FOXO1, Bax and caspase-3 were lower in bovine subcutaneous adipocytes than in intramuscular adipocytes. After resveratrol-treatment, the extent of up- or down-regulation was higher in subcutaneous adipocytes than in intramuscular adipocytes. These data indicate that bovine subcutaneous adipocytes are more sensitive to apoptosis than intramuscular adipocytes following treatment with resveratrol by regulating SIRT1 activity.
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Affiliation(s)
- Xianglun Zhang
- Institute of Animal Science and Veterinary Medicine, Shandong Academy of Agricultural Sciences, Ji'nan, P.R. China.,Shandong Key Lab of Animal Disease Control and Breeding, Shandong Provincial Testing Center of Beef Cattle Performance, Shandong Provincial Engineering Technology Center of Animal Healthy Breeding, Ji'nan, P.R. China
| | - Fachun Wan
- Institute of Animal Science and Veterinary Medicine, Shandong Academy of Agricultural Sciences, Ji'nan, P.R. China.,Shandong Key Lab of Animal Disease Control and Breeding, Shandong Provincial Testing Center of Beef Cattle Performance, Shandong Provincial Engineering Technology Center of Animal Healthy Breeding, Ji'nan, P.R. China.,College of Life Sciences, Shandong Normal University, Ji'nan, P.R. China
| | - Wei You
- Institute of Animal Science and Veterinary Medicine, Shandong Academy of Agricultural Sciences, Ji'nan, P.R. China.,Shandong Key Lab of Animal Disease Control and Breeding, Shandong Provincial Testing Center of Beef Cattle Performance, Shandong Provincial Engineering Technology Center of Animal Healthy Breeding, Ji'nan, P.R. China
| | - Xiuwen Tan
- Institute of Animal Science and Veterinary Medicine, Shandong Academy of Agricultural Sciences, Ji'nan, P.R. China.,Shandong Key Lab of Animal Disease Control and Breeding, Shandong Provincial Testing Center of Beef Cattle Performance, Shandong Provincial Engineering Technology Center of Animal Healthy Breeding, Ji'nan, P.R. China
| | - Guifen Liu
- Institute of Animal Science and Veterinary Medicine, Shandong Academy of Agricultural Sciences, Ji'nan, P.R. China.,Shandong Key Lab of Animal Disease Control and Breeding, Shandong Provincial Testing Center of Beef Cattle Performance, Shandong Provincial Engineering Technology Center of Animal Healthy Breeding, Ji'nan, P.R. China
| | - Qing Jin
- Institute of Animal Science and Veterinary Medicine, Shandong Academy of Agricultural Sciences, Ji'nan, P.R. China.,Shandong Key Lab of Animal Disease Control and Breeding, Shandong Provincial Testing Center of Beef Cattle Performance, Shandong Provincial Engineering Technology Center of Animal Healthy Breeding, Ji'nan, P.R. China
| | - Chen Wei
- Institute of Animal Science and Veterinary Medicine, Shandong Academy of Agricultural Sciences, Ji'nan, P.R. China.,Shandong Key Lab of Animal Disease Control and Breeding, Shandong Provincial Testing Center of Beef Cattle Performance, Shandong Provincial Engineering Technology Center of Animal Healthy Breeding, Ji'nan, P.R. China
| | - Xiaomu Liu
- Institute of Animal Science and Veterinary Medicine, Shandong Academy of Agricultural Sciences, Ji'nan, P.R. China.,Shandong Key Lab of Animal Disease Control and Breeding, Shandong Provincial Testing Center of Beef Cattle Performance, Shandong Provincial Engineering Technology Center of Animal Healthy Breeding, Ji'nan, P.R. China
| | - Hongbo Zhao
- Institute of Animal Science and Veterinary Medicine, Shandong Academy of Agricultural Sciences, Ji'nan, P.R. China.,Shandong Key Lab of Animal Disease Control and Breeding, Shandong Provincial Testing Center of Beef Cattle Performance, Shandong Provincial Engineering Technology Center of Animal Healthy Breeding, Ji'nan, P.R. China
| | - Yifan Liu
- Institute of Animal Science and Veterinary Medicine, Shandong Academy of Agricultural Sciences, Ji'nan, P.R. China.,Shandong Key Lab of Animal Disease Control and Breeding, Shandong Provincial Testing Center of Beef Cattle Performance, Shandong Provincial Engineering Technology Center of Animal Healthy Breeding, Ji'nan, P.R. China
| | - Chen Zhang
- Institute of Animal Science and Veterinary Medicine, Shandong Academy of Agricultural Sciences, Ji'nan, P.R. China.,Shandong Key Lab of Animal Disease Control and Breeding, Shandong Provincial Testing Center of Beef Cattle Performance, Shandong Provincial Engineering Technology Center of Animal Healthy Breeding, Ji'nan, P.R. China.,College of Life Sciences, Shandong Normal University, Ji'nan, P.R. China
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Resveratrol induces apoptosis and inhibits adipogenesis by stimulating the SIRT1-AMPKα-FOXO1 signalling pathway in bovine intramuscular adipocytes. Mol Cell Biochem 2017; 439:213-223. [PMID: 28819881 DOI: 10.1007/s11010-017-3149-z] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2017] [Accepted: 08/05/2017] [Indexed: 10/19/2022]
Abstract
Sirtuin type 1 (SIRTl) and AMP-activated protein kinase (AMPK) play important roles in regulating energy metabolism, cell proliferation and differentiation, ageing, apoptosis, and metabolism. The effect of 100, 200, and 400 μm Resveratrol (RES), an activator of SIRT1, on apoptosis of bovine intramuscular adipocytes was investigated by nuclear staining, flow cytometry, quantitative real-time polymerase chain reaction, and western blotting. Results show that RES inhibited adipogenesis, decreased cell viability, and increased apoptotic rates in a dose-dependent way. RES up-regulated SIRT1, AMPKα, forkhead box O1 (FOXO1), hormone-sensitive lipase (HSL), lipoprotein lipase (LPL), caspase-3, and Bax; and down-regulated peroxisome proliferator-activated receptor-gamma (PPARγ), fatty acid synthase (FAS), and Bcl-2, at both mRNA and protein level. The effect of RES was abolished by addition of sirtinol (an inhibitor of SIRT1). This is the first study demonstrating a role for AMPK-SIRT1-FOXO1 signalling pathway in regulating apoptosis in bovine intramuscular adipocytes. Our findings provide important information on the mechanism by which RES controls deposition of cattle intramuscular fat via adipocyte apoptosis.
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SIRT1 inhibits inflammatory response partly through regulation of NLRP3 inflammasome in vascular endothelial cells. Mol Immunol 2016; 77:148-56. [PMID: 27505710 DOI: 10.1016/j.molimm.2016.07.018] [Citation(s) in RCA: 76] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2015] [Revised: 06/25/2016] [Accepted: 07/29/2016] [Indexed: 11/23/2022]
Abstract
Emerging evidence has indicated that vascular endothelial cells (ECs) not only form the barrier between blood and the vessel wall but also serve as conditional innate immune cells. Our previous study found that SIRT1, a class III histone deacetylase, inhibits the inflammatory response in ECs. Recent studies revealed that SIRT1 also participates in the modulation of immune responses. Although the NLRP3 inflammasome is known to be a crucial component of the innate immune system, there is no direct evidence demonstrating the anti-inflammatory effect of SIRT1 on ECs through the NLRP3 inflammasome. In this study, we observed that lipopolysaccharide (LPS) and adenosine triphosphate (ATP) triggered the activation of NLRP3 inflammasome in human umbilical vein ECs (HUVECs). Moreover, SIRT1 expression was reduced in HUVECs stimulated with LPS and ATP. SIRT1 activator inhibited the expression of monocyte chemotactic protein-1 (MCP-1) and C-reactive protein (CRP), whereas SIRT1 knockdown resulted in significant increases in MCP-1 and CRP levels in HUVECs stimulated with LPS and ATP. Importantly, the lack of SIRT1 enhanced NLRP3 inflammasome activation and subsequent caspase-1 cleavage. On the other hand, NLRP3 siRNA blocked the activation of the NLRP3 inflammasome in HUVECs stimulated with LPS plus ATP. Further study revealed that NLRP3 inflammasome blockade significantly reduced MCP-1 and CRP production in HUVECs. In vivo studies indicated that implantation of the periarterial carotid collar inhibited arterial SIRT1 expression in rabbits. Meanwhile, treatment with a SIRT1 activator decreased the expression levels of MCP-1 and CRP in collared arteries and the interleukin (IL)-1β level in serum. Taken together, these findings indicate that NLRP3 inflammasome activation promoted endothelial inflammation and that SIRT1 inhibits the inflammatory response partly through regulation of the NLRP3 inflammasome in ECs.
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Wang GQ, Wang Y, Xiong Y, Chen XC, Ma ML, Cai R, Gao Y, Sun YM, Yang GS, Pang WJ. Sirt1 AS lncRNA interacts with its mRNA to inhibit muscle formation by attenuating function of miR-34a. Sci Rep 2016; 6:21865. [PMID: 26902620 PMCID: PMC4763196 DOI: 10.1038/srep21865] [Citation(s) in RCA: 88] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2015] [Accepted: 02/02/2016] [Indexed: 12/29/2022] Open
Abstract
Recent studies demonstrate the functions of long non-coding RNAs (lncRNAs) in mediating gene expression at the transcriptional or translational level. Our previous study identified a Sirt1 antisense (AS) lncRNA transcribed from the Sirt1 AS strand. However, its role and regulatory mechanism is still unknown in myogenesis. Here, functional analyses showed that Sirt1 AS lncRNA overexpression promoted myoblast proliferation, but inhibited differentiation. Mechanistically, Sirt1 AS lncRNA was found to activate its sense gene, Sirt1. The luciferase assay provided evidences that Sirt1 AS lncRNA interacted with Sirt1 3′ UTR and rescued Sirt1 transcriptional suppression by competing with miR-34a. In addition, RNA stability assay showed that Sirt1 AS lncRNA prolonged Sirt1 mRNA half-life from 2 to 10 h. Ribonuclease protection assay further indicated that it fully bound to Sirt1 mRNA in the myoblast cytoplasm. Moreover, Sirt1 AS overexpression led to less mouse weight than the control because of less lean mass and greater levels of Sirt1, whereas the fat mass and levels of miR-34a were not altered. Based on the findings, a novel regulatory mechanism was found that Sirt1 AS lncRNA preferably interacted with Sirt1 mRNA forming RNA duplex to promote Sirt1 translation by competing with miR-34a, inhibiting muscle formation.
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Affiliation(s)
- Guo-qiang Wang
- Laboratory of Animal Fat Deposition &Muscle Development, College of Animal Science and Technology, Northwest A&F University, Yangling Shaanxi 712100, China
| | - Yu Wang
- Laboratory of Animal Fat Deposition &Muscle Development, College of Animal Science and Technology, Northwest A&F University, Yangling Shaanxi 712100, China
| | - Yan Xiong
- Laboratory of Animal Fat Deposition &Muscle Development, College of Animal Science and Technology, Northwest A&F University, Yangling Shaanxi 712100, China
| | - Xiao-Chang Chen
- Laboratory of Animal Fat Deposition &Muscle Development, College of Animal Science and Technology, Northwest A&F University, Yangling Shaanxi 712100, China
| | - Mei-ling Ma
- Laboratory of Animal Fat Deposition &Muscle Development, College of Animal Science and Technology, Northwest A&F University, Yangling Shaanxi 712100, China
| | - Rui Cai
- Laboratory of Animal Fat Deposition &Muscle Development, College of Animal Science and Technology, Northwest A&F University, Yangling Shaanxi 712100, China
| | - Yun Gao
- Laboratory of Animal Fat Deposition &Muscle Development, College of Animal Science and Technology, Northwest A&F University, Yangling Shaanxi 712100, China
| | - Yun-mei Sun
- Laboratory of Animal Fat Deposition &Muscle Development, College of Animal Science and Technology, Northwest A&F University, Yangling Shaanxi 712100, China
| | - Gong-She Yang
- Laboratory of Animal Fat Deposition &Muscle Development, College of Animal Science and Technology, Northwest A&F University, Yangling Shaanxi 712100, China
| | - Wei-Jun Pang
- Laboratory of Animal Fat Deposition &Muscle Development, College of Animal Science and Technology, Northwest A&F University, Yangling Shaanxi 712100, China
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Abstract
Obesity is a pandemic problem worldwide. Dietary polyphenolic compounds show promise in preventing obesity. Resveratrol (RSV), one of the most extensively studied polyphenol compounds, has been shown to exert anti-obesity effects in various animal studies and also in several human studies. The fat-lowering effects of RSV may result from its ability to inhibit adipogenesis, suppress lipogenesis, stimulate lipolysis, promote apoptosis, and increase fatty acid oxidation and thermogenesis, as well as the recently demonstrated induction of the browning of white adipose tissue (WAT). These anti-obesity effects of RSV likely depend on its ability to activate AMP-activated protein kinase (AMPK), a key enzyme regulating cellular energy metabolism. Consumption of fruits such as berries, grapes and nuts, which contain high levels of RSV and other polyphenols, might help to reduce obesity.
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Affiliation(s)
- Songbo Wang
- College of Animal Science and National Engineering Research Center for Breeding Swine Industry, South China Agricultural University, Guangzhou 510642, P. R. China
- Washington Center for Muscle Biology and Department of Animal Sciences, Washington State University, Pullman, WA 99164
| | - Mei-Jun Zhu
- School of Food Science, Washington State University, Pullman, WA 99164
| | - Min Du
- Washington Center for Muscle Biology and Department of Animal Sciences, Washington State University, Pullman, WA 99164
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Wang GQ, Zhu L, Ma ML, Chen XC, Gao Y, Yu TY, Yang GS, Pang WJ. Mulberry 1-Deoxynojirimycin Inhibits Adipogenesis by Repression of the ERK/PPARγ Signaling Pathway in Porcine Intramuscular Adipocytes. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2015; 63:6212-6220. [PMID: 26075699 DOI: 10.1021/acs.jafc.5b01680] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Intramuscular fat (IMF), which is modulated by adipogenensis of intramuscular adipocytes, plays a key role in pork quality associated with marbling, juiceness, and flavor. However, the regulatory mechanism of 1-deoxynojirimycin (DNJ) on adipogenesis is still unknown. Here, we found that both DNJ (2.0, 3.0, 4.0, 5.0, and 6.0 μM) and rosiglitazone (RSG; 0.1, 0.2, 0.3, 0.4, and 0.5 mM) had no effect on cell viability. Moreover, 4 μM DNJ significantly inhibited adipogenesis, whereas 0.4 mM RSG increased lipogenesis of porcine intramuscular adipocytes. Interestingly, DNJ sharply inhibited phosphorylation of extracellular regulated protein kinases 1/2 (ERK1/2), but did not change phosphorylation of AKT (protein kinase B) in intramuscular adipocytes. We further found that the inhibitory adipogenesis of DNJ was attenuated by RSG via up-regulation of PPARγ. On the basis of the above findings, we suggest that DNJ inhibited adipogenesis through the ERK/PPARγ signaling pathway in porcine intramuscular adipocytes.
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Aguirre L, Fernández-Quintela A, Arias N, Portillo MP. Resveratrol: anti-obesity mechanisms of action. Molecules 2014; 19:18632-55. [PMID: 25405284 PMCID: PMC6271102 DOI: 10.3390/molecules191118632] [Citation(s) in RCA: 147] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2014] [Revised: 10/28/2014] [Accepted: 11/10/2014] [Indexed: 12/17/2022] Open
Abstract
Resveratrol is a non-flavonoid polyphenol which belongs to the stilbenes group and is produced naturally in several plants in response to injury or fungal attack. Resveratrol has been recently reported as preventing obesity. The present review aims to compile the evidence concerning the potential mechanisms of action which underlie the anti-obesity effects of resveratrol, obtained either in cultured cells lines and animal models. Published studies demonstrate that resveratrol has an anti-adipogenic effect. A good consensus concerning the involvement of a down-regulation of C/EBPα and PPARγ in this effect has been reached. Also, in vitro studies have demonstrated that resveratrol can increase apoptosis in mature adipocytes. Furthermore, different metabolic pathways involved in triacylglycerol metabolism in white adipose tissue have been shown to be targets for resveratrol. Both the inhibition of de novo lipogenesis and adipose tissue fatty acid uptake mediated by lipoprotein lipase play a role in explaining the reduction in body fat which resveratrol induces. As far as lipolysis is concerned, although this compound per se seems to be unable to induce lipolysis, it increases lipid mobilization stimulated by β-adrenergic agents. The increase in brown adipose tissue thermogenesis, and consequently the associated energy dissipation, can contribute to explaining the body-fat lowering effect of resveratrol. In addition to its effects on adipose tissue, resveratrol can also acts on other organs and tissues. Thus, it increases mitochondriogenesis and consequently fatty acid oxidation in skeletal muscle and liver. This effect can also contribute to the body-fat lowering effect of this molecule.
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Affiliation(s)
- Leixuri Aguirre
- Nutrition and Obesity Group, Department of Nutrition and Food Science, Faculty of Pharmacy, University of Basque Country (UPV/EHU) and Lucio Lascaray Research Center, 01006 Vitoria, Spain.
| | - Alfredo Fernández-Quintela
- Nutrition and Obesity Group, Department of Nutrition and Food Science, Faculty of Pharmacy, University of Basque Country (UPV/EHU) and Lucio Lascaray Research Center, 01006 Vitoria, Spain.
| | - Noemí Arias
- Nutrition and Obesity Group, Department of Nutrition and Food Science, Faculty of Pharmacy, University of Basque Country (UPV/EHU) and Lucio Lascaray Research Center, 01006 Vitoria, Spain.
| | - Maria P Portillo
- Nutrition and Obesity Group, Department of Nutrition and Food Science, Faculty of Pharmacy, University of Basque Country (UPV/EHU) and Lucio Lascaray Research Center, 01006 Vitoria, Spain.
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Pastore S, Lulli D, Maurelli R, Dellambra E, De Luca C, Korkina LG. Resveratrol induces long-lasting IL-8 expression and peculiar EGFR activation/distribution in human keratinocytes: mechanisms and implications for skin administration. PLoS One 2013; 8:e59632. [PMID: 23527233 PMCID: PMC3601074 DOI: 10.1371/journal.pone.0059632] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2013] [Accepted: 02/15/2013] [Indexed: 01/18/2023] Open
Abstract
Anti-inflammatory and skin tumour preventing effects of resveratrol have been extensively studied pre-clinically and resveratrol has been proposed for clinical investigations. To provide a basis or/and limitations for topical administration to human skin, molecular mechanisms underlying resveratrol effects towards normal human epidermal keratinocytes (NHEK) were evaluated. NHEK were challenged by either resveratrol alone or by its combination with TNFalpha or TGFalpha, and time-dependent molecular events were monitored. Interleukin 8 (IL-8) expression and its mRNA stability, ERK1/2, p65/RelA, and EGFR phosphorylation were determined. Intracellular distribution of EGFR/P-EGFR was measured in the membrane, cytoplasmic, and nuclear fractions. Specific DNA binding activity of NFκB (p65/RelA) and AP-1(c-Fos), NHEK proliferation, and molecular markers of apoptosis/cell cycle were detected. Resveratrol induced delayed, long-lasting and steadily growing IL-8 gene and protein over-expression as well as enhanced EGFR phosphorylation, both abrogated by the EGFR kinase inhibitor PD168393. However, resveratrol did not act as a phosphatase inhibitor. ERK phosphorylation was transiently inhibited at early time-points and activated at 6–24 h. Accordingly, c-Fos-specific DNA binding was increased by resveratrol. Cellular distribution of EGFR/P-EGFR was shifted to membrane and nucleus while cytosolic levels were reduced concomitant with enhanced degradation. Notwithstanding high nuclear levels of EGFR/P-EGFR, spontaneous and TGFalpha-triggered cell proliferation was strongly suppressed by resveratrol mainly through cell cycle arrest.
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Affiliation(s)
- Saveria Pastore
- Lab. Tissue Engineering and Skin Pathophysiology, Dermatology Institute (Istituto Dermopatico dell’Immacolata, IDI IRCCS), Rome, Italy
| | - Daniela Lulli
- Lab. Tissue Engineering and Skin Pathophysiology, Dermatology Institute (Istituto Dermopatico dell’Immacolata, IDI IRCCS), Rome, Italy
| | - Riccardo Maurelli
- Lab. Tissue Engineering and Skin Pathophysiology, Dermatology Institute (Istituto Dermopatico dell’Immacolata, IDI IRCCS), Rome, Italy
| | - Elena Dellambra
- Lab. Tissue Engineering and Skin Pathophysiology, Dermatology Institute (Istituto Dermopatico dell’Immacolata, IDI IRCCS), Rome, Italy
| | - Chiara De Luca
- Lab. Tissue Engineering and Skin Pathophysiology, Dermatology Institute (Istituto Dermopatico dell’Immacolata, IDI IRCCS), Rome, Italy
| | - Liudmila G. Korkina
- Lab. Tissue Engineering and Skin Pathophysiology, Dermatology Institute (Istituto Dermopatico dell’Immacolata, IDI IRCCS), Rome, Italy
- * E-mail:
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