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Geranii Herba as a Potential Inhibitor of SARS-CoV-2 Main 3CL pro, Spike RBD, and Regulation of Unfolded Protein Response: An In Silico Approach. Antibiotics (Basel) 2020; 9:antibiotics9120863. [PMID: 33287311 PMCID: PMC7761775 DOI: 10.3390/antibiotics9120863] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Revised: 11/24/2020] [Accepted: 12/01/2020] [Indexed: 12/19/2022] Open
Abstract
Background: Since the first patient identified with SARS-CoV-2 symptoms in December 2019, the trend of a spreading coronavirus disease 2019 (COVID-19) infection has remained to date. As for now, there is an urgent need to develop novel drugs or vaccines for the SARS-CoV-2 virus. Methods: Polyphenolic compounds have potential as drug candidates for various diseases, including viral infections. In this study, polyphenolic compounds contained in Geranii Herba were chosen for an in silico approach. The SARS-CoV-2 receptor-binding domain (RBD), 3CLpro (Replicase polyprotein 1ab), and the cell surface receptor glucose-regulated protein 78 (GRP78) were chosen as target proteins. Results: Based on the molecular docking analysis, ellagic acid, gallic acid, geraniin, kaempferitrin, kaempferol, and quercetin showed significant binding interactions with the target proteins. Besides, the molecular dynamic simulation studies support Geranii Herba’s inhibition efficiency on the SARS-CoV-2 RBD. We assume that the active compounds in Geranii Herba might inhibit SARS-CoV-2 cell entry through the ACE2 receptor and inhibit the proteolytic process. Besides, these compounds may help to regulate the cell signaling under the unfolded protein response in endoplasmic reticulum stress through the binding with GRP78 and avoid the SARS-CoV-2 interaction. Conclusions: Hence, the compounds present in Geranii Herba could be used as possible drug candidates for the prevention/treatment of SARS-CoV-2 infection.
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302
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Elfiky AA. Human papillomavirus E6: Host cell receptor, GRP78, binding site prediction. J Med Virol 2020; 92:3759-3765. [PMID: 32108357 PMCID: PMC7228306 DOI: 10.1002/jmv.25737] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2019] [Accepted: 02/25/2020] [Indexed: 11/09/2022]
Abstract
Human papillomavirus (HPV) is the main cervical cancer-promoting element that is transmitted through sexual routes. Anal, head, and throat cancers are also reported to be accompanied by HPV infection. E6 is one of the HPV nonstructural proteins, which is responsible for cell differentiation by targeting tumor suppressor genes, p105Rb and p53. E6 was reported to be stabilized by two chaperone proteins; glucose-regulated protein 78 (GRP78) and heat shock protein 90. GRP78 is responsible for the unfolded protein response of the cells, and it was reported to be upregulated in many cancers, including cervical cancer. It was reported that knocking out GRP78 destabilizes E6 leading to faster degradation of E6 in vivo. The current work predicts the possible binding mode between E6 and GRP78 based on sequence and structural similarities.
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Affiliation(s)
- Abdo A. Elfiky
- Biophysics Department, Faculty of SciencesCairo UniversityGizaEgypt
- College of Applied Medical SciencesUniversity of Al‐JoufAl‐JoufKingdom of Saudi Arabia
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303
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Gelman R, Bayatra A, Kessler A, Schwartz A, Ilan Y. Targeting SARS-CoV-2 receptors as a means for reducing infectivity and improving antiviral and immune response: an algorithm-based method for overcoming resistance to antiviral agents. Emerg Microbes Infect 2020; 9:1397-1406. [PMID: 32490731 PMCID: PMC7473106 DOI: 10.1080/22221751.2020.1776161] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Revised: 05/25/2020] [Accepted: 05/25/2020] [Indexed: 01/08/2023]
Abstract
The ongoing severe acute respiratory syndrome pandemic caused by the novel coronavirus 2 (SARS-CoV-2) is associated with high morbidity and mortality rates, and it has created a pressing global need for effective antiviral therapies against it. COVID-19 disease pathogenesis is characterized by an initial virus-mediated phase, followed by inappropriate hyperactivation of the immune system leading to organ damage. Targeting of the SARS-CoV-2 viral receptors is being explored as a therapeutic option for these patients. In this paper, we summarize several potential receptors associated with the infectivity of SARS-CoV-2 and discuss their association with the immune-mediated inflammatory response. The potential for the development of resistance towards antiviral drugs is also presented. An algorithm-based platform to improve the efficacy of and overcome resistance to viral receptor blockers through the introduction of personalized variability is described. This method is designed to ensure sustained antiviral effectiveness when using SARS-CoV-2 receptor blockers.
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Affiliation(s)
- Ram Gelman
- Department of Medicine, Hebrew University-Hadassah Medical
Center, Jerusalem, Israel
| | - Areej Bayatra
- Department of Medicine, Hebrew University-Hadassah Medical
Center, Jerusalem, Israel
| | - Asa Kessler
- Department of Medicine, Hebrew University-Hadassah Medical
Center, Jerusalem, Israel
| | - Asaf Schwartz
- Department of Medicine, Hebrew University-Hadassah Medical
Center, Jerusalem, Israel
| | - Yaron Ilan
- Department of Medicine, Hebrew University-Hadassah Medical
Center, Jerusalem, Israel
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304
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Cortesi M, Zamagni A, Pignatta S, Zanoni M, Arienti C, Rossi D, Collina S, Tesei A. Pan-Sigma Receptor Modulator RC-106 Induces Terminal Unfolded Protein Response In In Vitro Pancreatic Cancer Model. Int J Mol Sci 2020; 21:ijms21239012. [PMID: 33260926 PMCID: PMC7734580 DOI: 10.3390/ijms21239012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Revised: 11/17/2020] [Accepted: 11/24/2020] [Indexed: 12/12/2022] Open
Abstract
Pancreatic cancer (PC) remains one of the most lethal cancers worldwide. Sigma receptors (SRs) have been proposed as cancer therapeutic targets. Their main localization suggests they play a potential role in ER stress and in the triggering of the unfolded protein response (UPR). Here, we investigated the mechanisms of action of RC-106, a novel pan-SR modulator, to characterize therapeutically exploitable role of SRs in tumors. Two PC cell lines were used in all the experiments. Terminal UPR activation was evaluated by quantifying BiP, ATF4 and CHOP by Real-Time qRT-PCR, Western Blot, immunofluorescence and confocal microscopy. Cell death was studied by flow cytometry. Post-transcriptional gene silencing was performed to study the interactions between SRs and UPR key proteins. RC-106 activated ER stress sensors in a dose- and time-dependent manner. It also induced ROS production accordingly with ATF4 upregulation at the same time reducing cell viability of both cell lines tested. Moreover, RC-106 exerted its effect through the induction of the terminal UPR, as shown by the activation of some of the main transducers of this pathway. Post-transcriptional silencing studies confirmed the connection between SRs and these key proteins. Overall, our data highlighted a key role of SRs in the activation of the terminal UPR pathway, thus indicating pan-SR ligands as candidates for targeting the UPR in pancreatic cancer.
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Affiliation(s)
- Michela Cortesi
- Biosciences Laboratory, Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori (IRST) IRCCS, 47014 Meldola, Italy; (A.Z.); (S.P.); (M.Z.); (C.A.)
- Correspondence: (M.C.); (A.T.)
| | - Alice Zamagni
- Biosciences Laboratory, Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori (IRST) IRCCS, 47014 Meldola, Italy; (A.Z.); (S.P.); (M.Z.); (C.A.)
| | - Sara Pignatta
- Biosciences Laboratory, Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori (IRST) IRCCS, 47014 Meldola, Italy; (A.Z.); (S.P.); (M.Z.); (C.A.)
| | - Michele Zanoni
- Biosciences Laboratory, Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori (IRST) IRCCS, 47014 Meldola, Italy; (A.Z.); (S.P.); (M.Z.); (C.A.)
| | - Chiara Arienti
- Biosciences Laboratory, Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori (IRST) IRCCS, 47014 Meldola, Italy; (A.Z.); (S.P.); (M.Z.); (C.A.)
| | - Daniela Rossi
- Department of Drug Sciences, Medicinal Chemistry and Pharmaceutical Technology Section, University of Pavia, 27100 Pavia, Italy; (D.R.); (S.C.)
| | - Simona Collina
- Department of Drug Sciences, Medicinal Chemistry and Pharmaceutical Technology Section, University of Pavia, 27100 Pavia, Italy; (D.R.); (S.C.)
| | - Anna Tesei
- Biosciences Laboratory, Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori (IRST) IRCCS, 47014 Meldola, Italy; (A.Z.); (S.P.); (M.Z.); (C.A.)
- Correspondence: (M.C.); (A.T.)
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305
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Zamorano Cuervo N, Grandvaux N. ACE2: Evidence of role as entry receptor for SARS-CoV-2 and implications in comorbidities. eLife 2020; 9:e61390. [PMID: 33164751 PMCID: PMC7652413 DOI: 10.7554/elife.61390] [Citation(s) in RCA: 213] [Impact Index Per Article: 53.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Accepted: 10/29/2020] [Indexed: 02/06/2023] Open
Abstract
Pandemic severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) causes coronavirus 19 disease (COVID-19) which presents a large spectrum of manifestations with fatal outcomes in vulnerable people over 70-years-old and with hypertension, diabetes, obesity, cardiovascular disease, COPD, and smoking status. Knowledge of the entry receptor is key to understand SARS-CoV-2 tropism, transmission and pathogenesis. Early evidence pointed to angiotensin-converting enzyme 2 (ACE2) as SARS-CoV-2 entry receptor. Here, we provide a critical summary of the current knowledge highlighting the limitations and remaining gaps that need to be addressed to fully characterize ACE2 function in SARS-CoV-2 infection and associated pathogenesis. We also discuss ACE2 expression and potential role in the context of comorbidities associated with poor COVID-19 outcomes. Finally, we discuss the potential co-receptors/attachment factors such as neuropilins, heparan sulfate and sialic acids and the putative alternative receptors, such as CD147 and GRP78.
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Affiliation(s)
| | - Nathalie Grandvaux
- CRCHUM - Centre Hospitalier de l’Université de MontréalQuébecCanada
- Department of Biochemistry and Molecular Medicine, Faculty of Medicine, Université de MontréalQuébecCanada
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306
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Naidu SAG, Clemens RA, Pressman P, Zaigham M, Kadkhoda K, Davies KJA, Naidu AS. COVID-19 during Pregnancy and Postpartum. J Diet Suppl 2020; 19:115-142. [PMID: 33164601 DOI: 10.1080/19390211.2020.1834049] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Coronavirus Disease 2019 (COVID-19) triggered by Severe Acute Respiratory Syndrome Coronavirus-2 (SARS-CoV-2) infection has been declared a pandemic by the World Health Organization (WHO) on March 11, 2020. Oxidative stress and its related metabolic syndromes are potential risk factors in the susceptibility to, and severity of COVID-19. In concert with the earliest reports of COVID-19, obstetricians started to diagnose and treat SARS-CoV-2 infections during pregnancy ("COVID-19-Pregnancy"). High metabolic demand to sustain normal fetal development increases the burden of oxidative stress in pregnancy. Intracellular redox changes intertwined with acute phase responses at the maternal-fetal interface could amplify during pregnancy. Interestingly, mother-to-fetus transmission of SARS-CoV-2 has not been detected in most of the COVID-19-Pregnancy cases. This relative absence of vertical transmission may be related to the presence of lactoferrin in the placenta, amniotic fluid, and lacteal secretions. However, the cytokine-storm induced during COVID-19-Pregnancy may cause severe inflammatory damage to the fetus, and if uncontrolled, may later result in autism spectrum-like disorders and brain development abnormalities in neonates. Considering this serious health threat to child growth and development, the prevention of COVID-19 during pregnancy should be considered a high priority. This review summarizes the intricate virulence factors of COVID-19 and elucidate its pathobiological spectrum during pregnancy and postpartum periods with a focus on the putative and complex roles of endogenous and exogenous lactoferrin in conferring immunological advantage to the host.
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Affiliation(s)
| | - Roger A Clemens
- University of Southern California, School of Pharmacy, Los Angeles, CA, USA
| | | | - Mehreen Zaigham
- Department of Obstetrics & Gynecology, Skåne University Hospital, Malmö, Sweden
| | - Kamran Kadkhoda
- Immunopathology Laboratory, Robert J. Tomisch Pathology & Laboratory Medicine Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Kelvin J A Davies
- Division of Biogerontology, Leonard Davis School of Gerontology, The University of Southern California, Los Angeles, CA, USA.,Division of Molecular & Computational Biology, Dornsife College of Letters, Arts, and Sciences, The University of Southern California, Los Angeles, CA, USA.,Department Biochemistry & Molecular Medicine, Keck School of Medicine of USC, The University of Southern California, Los Angeles, CA, USA
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307
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Barage S, Karthic A, Bavi R, Desai N, Kumar R, Kumar V, Lee KW. Identification and characterization of novel RdRp and Nsp15 inhibitors for SARS-COV2 using computational approach. J Biomol Struct Dyn 2020; 40:2557-2574. [PMID: 33155531 PMCID: PMC7651200 DOI: 10.1080/07391102.2020.1841026] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The World Health Organization has declared COVID-19 as a global health emergency. COVID-19 is caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) and highlights an urgent need for therapeutics. Here, we have employed a series of computer-aided drug repurposing campaign to discover inhibitors of RNA dependent RNA polymerase (RdRp) and Nsp15/EndoU. Subsequently, MD simulation has been performed to observe dynamic behavior of identified leads at the active site of RdRp and Nsp15. We successfully identified novel lead molecule such as Alectinib for RdRp while Naldemedine and Ergotamine for NSP15. These lead molecules were accommodated in the active site of the enzyme and stabilized by the networks of the hydrogen bond, pi type and hydrophobic interaction with key residues of either target. Interestingly, identified compounds show molecular mimicry in terms of molecular interactions with key residues of RdRp and Nsp15 essential for catalysis and substrate interaction. Previously, Alectinib, Naldemedine and Ergotamine were used as drug in different diseases might be repurposed against selected protein targets of COVID19. Finally, we propose that the identified inhibitors represent a novel lead molecule to design a more effective inhibitor to stop the progress of pathogen. Communicated by Ramaswamy H. Sarma
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Affiliation(s)
- Sagar Barage
- Amity Institute of Biotechnology, Amity University, Mumbai, Maharashtra, India
| | - A Karthic
- Amity Institute of Biotechnology, Amity University, Mumbai, Maharashtra, India
| | - Rohit Bavi
- State Key Laboratory of Natural Medicines, Department of Biomedical Engineering, School of Engineering, China Pharmaceutical University, Nanjing, China.,School of Chemical Sciences, Punyashlok Ahilyadevi Holkar Solapur University, Solapur, Maharashtra, India
| | - Neetin Desai
- SDSOS, NMIMS University, Mumbai, Maharashtra, India
| | - Raj Kumar
- Department of Biotechnology and Bioinformatics, Jaypee University of Information Technology, Waknaghat, Solan, Himachal Pradesh, India
| | - Vikas Kumar
- Division of Life Science, Division of Applied Life Science (BK21 Plus), Plant Molecular Biology and Biotechnology Research Center (PMBBRC, Research Institute of Natural Science (RINS), Gyeongsang National University (GNU), Jinju, Republic of Korea
| | - Keun Woo Lee
- Division of Life Science, Division of Applied Life Science (BK21 Plus), Plant Molecular Biology and Biotechnology Research Center (PMBBRC, Research Institute of Natural Science (RINS), Gyeongsang National University (GNU), Jinju, Republic of Korea
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308
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Xing N, Wang Y, Wang W, Zhong R, Xia T, Ding Z, Yang Y, Zhong Y, Shu Z. Cardioprotective effect exerted by Timosaponin BⅡ through the regulation of endoplasmic stress-induced apoptosis. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2020; 78:153288. [PMID: 32782218 DOI: 10.1016/j.phymed.2020.153288] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Revised: 07/10/2020] [Accepted: 07/21/2020] [Indexed: 06/11/2023]
Abstract
BACKGROUND Timosaponin BⅡ (TBⅡ), one of the primary bioactive compounds from Anemarrhena asphodeloides Bunge, possesses potential cardioprotective effects. However, the mechanism underlying TBⅡ-mediated cardioprotection, especially the involvement of endoplasmic reticulum stress, remains largely unknown. PURPOSE This study was designed to evaluate the role of TBⅡ in myocardial injury protection and explore its possible mechanisms. METHODS In vivo models of isoproterenol-induced myocardial injury and H2O2-induced cytotoxicty were established to investigate the effect of anti-myocardial injury of TBⅡ. The potential mechanisms were investigated in vitro and in vivo using multiple detection methods like electrocardiography, histo-pathological examination, JC-1 staining, TUNEL staining, ELISA technology, and western blot analysis. RESULTS In vivo study revealed that TBⅡ improved electrocardiography and heart vacuolation, reduced myocyte apoptosis, and improved the antioxidant potential. In vitro investigation demonstrated that TBⅡ pretreatment inhibited ER stress-mediated apoptosis pathways. Further investigation of the underlying mechanisms revealed that TBⅡ prevented H2O2-induced H9c2 cardiomyocytes injury by the PI3K/Akt pathways, whereas the addition of LY294002, the pharmacologic antagonist of PI3K, attenuated TBⅡ-induced expression of apoptotic protein and cytoprotective effects. CONCLUSION These results suggested that TBⅡ protects against myocardial injury in vitro and enhances cellular defense capacity by inhibiting ER stress-mediated apoptosis pathways in vivo by activating the PI3K/Akt pathways.
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Affiliation(s)
- Na Xing
- Research Center for Good Practice in TCM Proessing Technology, Guangdong Pharmaceutical University, Guangzhou 510006, China; The College of Traditional Chinese Medicine, Guangdong Pharmaceutical University, Guangzhou 510006, China; Pharmacy College, Heilongjiang University of Chinese Medicine, Harbin 150040, China
| | - Yi Wang
- Research Center for Good Practice in TCM Proessing Technology, Guangdong Pharmaceutical University, Guangzhou 510006, China
| | - Wujing Wang
- The College of Traditional Chinese Medicine, Guangdong Pharmaceutical University, Guangzhou 510006, China
| | - Renxing Zhong
- Research Center for Good Practice in TCM Proessing Technology, Guangdong Pharmaceutical University, Guangzhou 510006, China; The College of Traditional Chinese Medicine, Guangdong Pharmaceutical University, Guangzhou 510006, China
| | - Tianyi Xia
- Research Center for Good Practice in TCM Proessing Technology, Guangdong Pharmaceutical University, Guangzhou 510006, China; The College of Traditional Chinese Medicine, Guangdong Pharmaceutical University, Guangzhou 510006, China
| | - Zihe Ding
- Research Center for Good Practice in TCM Proessing Technology, Guangdong Pharmaceutical University, Guangzhou 510006, China; The College of Traditional Chinese Medicine, Guangdong Pharmaceutical University, Guangzhou 510006, China
| | - Yanni Yang
- Research Center for Good Practice in TCM Proessing Technology, Guangdong Pharmaceutical University, Guangzhou 510006, China; The College of Traditional Chinese Medicine, Guangdong Pharmaceutical University, Guangzhou 510006, China
| | - Yanmei Zhong
- Research Center for Good Practice in TCM Proessing Technology, Guangdong Pharmaceutical University, Guangzhou 510006, China.
| | - Zunpeng Shu
- Research Center for Good Practice in TCM Proessing Technology, Guangdong Pharmaceutical University, Guangzhou 510006, China; The College of Traditional Chinese Medicine, Guangdong Pharmaceutical University, Guangzhou 510006, China.
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309
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Elfiky AA, Baghdady AM, Ali SA, Ahmed MI. GRP78 targeting: Hitting two birds with a stone. Life Sci 2020; 260:118317. [PMID: 32841659 PMCID: PMC7442953 DOI: 10.1016/j.lfs.2020.118317] [Citation(s) in RCA: 72] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2020] [Revised: 07/22/2020] [Accepted: 08/19/2020] [Indexed: 12/12/2022]
Abstract
BACKGROUND Glucose regulating protein 78 (GRP78) is one member of the Heat Shock Protein family of chaperone proteins (HSPA5) found in eukaryotes. It acts as the master of the Unfolded Protein Response (UPR) process in the lumen of the Endoplasmic Reticulum (ER). SCOPE Under the stress of unfolded proteins, GRP78 binds to the unfolded proteins to prevent misfolding, while under the load of the unfolded protein, it drives the cell to autophagy or apoptosis. Several attempts reported the overexpression of GRP78 on the cell membrane of cancer cells and cells infected with viruses or fungi. MAJOR CONCLUSIONS Cell-surface GRP78 is used as a cancer cell target in previous studies. Additionally, GRP78 is used as a drug target to stop the progression of cancer cells by different compounds, including peptides, antibodies, and some natural compounds. Additionally, it can be used as a protein target to reduce the infectivity of different viruses, including the pandemic SARS-CoV-2. Besides, GRP78 targeting is used in diagnosis and imaging modalities using radionuclides. GENERAL SIGNIFICANCE This review summarizes the various attempts that used GRP78 both in therapy (fighting cancer, viral and fungal infections) and diagnosis (imaging).
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310
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Gao LJ, Li P, Ma T, Zhong ZQ, Xu SJ. Ligustilide alleviates neurotoxicity in SH-SY5Y cells induced by Aβ 25-35 via regulating endoplasmic reticulum stress and autophagy. Phytother Res 2020; 35:1572-1584. [PMID: 33111362 DOI: 10.1002/ptr.6925] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2020] [Revised: 09/26/2020] [Accepted: 10/09/2020] [Indexed: 11/11/2022]
Abstract
Ligustilide is a phenolic compound isolated from Asian plants of Umbelliferae family. This study was aimed at exploring the neuroprotective effects of Ligustilide from the perspective of endoplasmic reticulum stress (ERS) and autophagy. The Alzheimer's disease (AD) cell models were constructed by SH-SY5Y cell line, which was exposed to 20 μM Aβ25-35 . CCK-8 was used to evaluate the cell viability of Ligustilide on AD cell model. Hoechst staining and LysoTracker Red were used to test the cell apoptosis and Lysosome function, respectively. ERS in living cells were detected by Thioflavin T. The expression of autophagy-related proteins (LC3B-II/I, P62/SQSTM1, Beclin1, and Atg5), ERS marker proteins (PERK, GRP78, and CHOH), and apoptosis proteins (Bax, Bcl-2, and Caspase-12) were analyzed by Western blot analyses. Aβ25-35 could induce ERS and autophagy in a time-dependent manner in SH-SY5Y cells. We demonstrated that Ligustilide significantly decreased the rate of apoptosis, and improved the viability of cells. Simultaneously, Ligustilide effectively modulated ERS via inhibiting the over-activation of GRP78/PERK/CHOP signaling pathway. In addition, Ligustilide alleviated the accumulation of autophagy vacuoles, reduced the ratio of LC3B-II/I and the level of P62/SQSTM1. Ligustilide significantly up-regulated lysosomal acidity and the expression of Cathepsin D (CTSD). Ligustilide could rescue lysosomal function to promote autophagy flux and inhibit the over-activation of ERS. This finding may contribute to the development of new therapeutic strategies for AD.
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Affiliation(s)
- Li-Juan Gao
- Institute of Meterial Medica Integration and Transformation for Brain Disorders, Chengdu University of Traditional Chinese Medicine, Chengdu, China.,School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Ping Li
- Institute of Meterial Medica Integration and Transformation for Brain Disorders, Chengdu University of Traditional Chinese Medicine, Chengdu, China.,School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Tengyun Ma
- Institute of Meterial Medica Integration and Transformation for Brain Disorders, Chengdu University of Traditional Chinese Medicine, Chengdu, China.,School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Zhan-Qiong Zhong
- Institute of Meterial Medica Integration and Transformation for Brain Disorders, Chengdu University of Traditional Chinese Medicine, Chengdu, China.,School of Basic Medical Sciences, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Shi-Jun Xu
- Institute of Meterial Medica Integration and Transformation for Brain Disorders, Chengdu University of Traditional Chinese Medicine, Chengdu, China.,School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
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Allam L, Ghrifi F, Mohammed H, El Hafidi N, El Jaoudi R, El Harti J, Lmimouni B, Belyamani L, Ibrahimi A. Targeting the GRP78-Dependant SARS-CoV-2 Cell Entry by Peptides and Small Molecules. Bioinform Biol Insights 2020; 14:1177932220965505. [PMID: 33149560 PMCID: PMC7585878 DOI: 10.1177/1177932220965505] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Accepted: 09/19/2020] [Indexed: 12/28/2022] Open
Abstract
The global burden of infections and the rapid spread of viral diseases show the need for new approaches in the prevention and development of effective therapies. To this end, we aimed to explore novel inhibitor compounds that can stop replication or decrease the viral load of the novel severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), for which there is currently no approved treatment. Besides using the angiotensin-converting enzyme (ACE2) receptor as a main gate, the CoV-2 can bind to the glucose-regulating protein 78 (GRP78) receptor to get into the cells to start an infection. Here, we report potential inhibitors comprising small molecules and peptides that could interfere with the interaction of SARS-CoV-2 and its target cells by blocking the recognition of the GRP78 cellular receptor by the viral Spike protein. These inhibitors were discovered through an approach of in silico screening of available databases of bioactive peptides and polyphenolic compounds and the analysis of their docking modes. This process led to the selection of 9 compounds with optimal binding affinities to the target sites. The peptides (satpdb18674, satpdb18446, satpdb12488, satpdb14438, and satpdb28899) act on regions III and IV of the viral Spike protein and on its binding sites in GRP78. However, 4 polyphenols such as epigallocatechin gallate (EGCG), homoeriodictyol, isorhamnetin, and curcumin interact, in addition to the Spike protein and its binding sites in GRP78, with the ATPase domain of GRP78. Our work demonstrates that there are at least 2 approaches to block the spread of SARS-CoV-2 by preventing its fusion with the host cells via GRP78.
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Affiliation(s)
- Loubna Allam
- Medical Biotechnology Laboratory (MedBiotech), Bioinova Research Center, Rabat Medical & Pharmacy School, Mohammed Vth University in Rabat, Rabat, Morocco
| | - Fatima Ghrifi
- Medical Biotechnology Laboratory (MedBiotech), Bioinova Research Center, Rabat Medical & Pharmacy School, Mohammed Vth University in Rabat, Rabat, Morocco
| | - Hakmi Mohammed
- Medical Biotechnology Laboratory (MedBiotech), Bioinova Research Center, Rabat Medical & Pharmacy School, Mohammed Vth University in Rabat, Rabat, Morocco
| | - Naima El Hafidi
- Medical Biotechnology Laboratory (MedBiotech), Bioinova Research Center, Rabat Medical & Pharmacy School, Mohammed Vth University in Rabat, Rabat, Morocco
| | - Rachid El Jaoudi
- Medical Biotechnology Laboratory (MedBiotech), Bioinova Research Center, Rabat Medical & Pharmacy School, Mohammed Vth University in Rabat, Rabat, Morocco
| | - Jaouad El Harti
- Therapeutic Chemistry Laboratory, Medical Biotechnology Laboratory (MedBiotech), Rabat Medical & Pharmacy School, Mohammed Vth University in Rabat, Rabat, Morocco
| | - Badreddine Lmimouni
- Parasitology and Mycology Department, Military Hospital Mohammed V, Rabat Medical & Pharmacy School, Mohammed Vth University in Rabat, Rabat, Morocco
| | - Lahcen Belyamani
- Emergency Department, Military Hospital Mohammed V, Rabat Medical & Pharmacy School, Mohammed Vth University in Rabat, Rabat, Morocco
| | - Azeddine Ibrahimi
- Medical Biotechnology Laboratory (MedBiotech), Bioinova Research Center, Rabat Medical & Pharmacy School, Mohammed Vth University in Rabat, Rabat, Morocco
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Yardim A, Kandemir FM, Ozdemir S, Kucukler S, Comakli S, Gur C, Celik H. Quercetin provides protection against the peripheral nerve damage caused by vincristine in rats by suppressing caspase 3, NF-κB, ATF-6 pathways and activating Nrf2, Akt pathways. Neurotoxicology 2020; 81:137-146. [PMID: 33038355 DOI: 10.1016/j.neuro.2020.10.001] [Citation(s) in RCA: 53] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2020] [Revised: 10/01/2020] [Accepted: 10/04/2020] [Indexed: 12/17/2022]
Abstract
In the present study, the protective effects of quercetin on peripheral neurotoxicity caused by vincristine, which is used effectively in the treatment of various types of cancers, were investigated by using different techniques. In the study, for 12 days, male Sprague Dawley rats were given 25 and 50 mg/kg doses of quercetin orally and were administered a 0.1 mg/kg dose of vincristine (a total cumulative dose of 1.2 mg/kg) intraperitoneally 30 min later. The protein levels of nuclear factor erythroid 2-related factor-2 (Nrf2), heme oxygenase-1 (HO-1), NAD(P)H quinone dehydrogenase-1 (NQO1), glial fibrillary acidic protein (GFAP), and nuclear factor kappa B (NF-κB) were measured with ELISA; the immunopositivity of 8-hydroxy-2'-deoxyguanosine (8-OHdG) and caspase 3 were determined with immunohistochemistry; the mRNA transcript levels of double-stranded RNA-activated protein kinase (PKR)-like ER kinase (PERK), inositol-requiring enzyme-1 (IRE1), activating transcription factor-6 (ATF-6), glucose-regulated protein 78 (GRP78), Bcl-2-associated X protein (Bax), B-cell lymphoma-2 (Bcl-2), caspase 3, protein kinase B1/2 (Akt-1/2), and forkhead box transcription factor, class O1 (FOXO1) were determined with RT-PCR. The reduction of Nrf2 levels and HO-1 and NQO1 activities in the sciatic nerve tissue, the increase in the levels of 8-OHdG, and the increase in the levels of GFAP and NF-κB caused by vincristine was observed to cause oxidative stress, oxidative DNA damage, neuronal cell damage, and inflammation, respectively. Additionally, vincristine was determined to cause ER stress and apoptosis by increasing PERK, IRE1, ATF-6, and GRP78 and caspase 3 and Bax expressions and by decreasing Bcl-2 expressions. Vincristine causing Akt inhibition also shows that it prevents neuronal survival. However, quercetin was determined to relieve oxidative stress, oxidative DNA damage, neuronal cell damage, inflammation, ER stress, and apoptosis caused by vincristine and enable Akt activation. These results show that in rats, quercetin may have a protective effect against peripheral neurotoxicity caused by vincristine.
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Affiliation(s)
- Ahmet Yardim
- Department of Neurosurgery, Private Buhara Hospital, Erzurum, Turkey
| | - Fatih Mehmet Kandemir
- Department of Biochemistry, Faculty of Veterinary Medicine, Atatürk University, Erzurum, Turkey.
| | - Selcuk Ozdemir
- Department of Genetics, Faculty of Veterinary Medicine, Atatürk University, Erzurum, Turkey
| | - Sefa Kucukler
- Department of Biochemistry, Faculty of Veterinary Medicine, Atatürk University, Erzurum, Turkey
| | - Selim Comakli
- Department of Pathology, Faculty of Veterinary Medicine, Atatürk University, Erzurum, Turkey
| | - Cihan Gur
- Department of Biochemistry, Faculty of Veterinary Medicine, Atatürk University, Erzurum, Turkey
| | - Hamit Celik
- Department of Neurology, Private Buhara Hospital, Erzurum, Turkey
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313
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Shehroz M, Zaheer T, Hussain T. Computer-aided drug design against spike glycoprotein of SARS-CoV-2 to aid COVID-19 treatment. Heliyon 2020; 6:e05278. [PMID: 33083627 PMCID: PMC7561340 DOI: 10.1016/j.heliyon.2020.e05278] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Revised: 05/26/2020] [Accepted: 10/13/2020] [Indexed: 02/02/2023] Open
Abstract
BACKGROUND SARS-CoV-2 has the Spike glycoprotein (S) which is crucial in attachment with host receptor and cell entry leading to COVID-19 infection. The current study was conducted to explore drugs against Receptor Binding Domain (RBD) of SARS-CoV-2 using in silico pharmacophore modelling and virtual screening approach to combat COVID-19. METHODS All the available sequences of RBD in NCBI were retrieved and multiple aligned to get insight into its diversity. The 3D structure of RBD was modelled and the conserved region was used as a template to design pharmacophore using LigandScout. Lead compounds were screened using Cambridge, Drugbank, ZINC and TIMBLE databases and these identified lead compounds were screened for their toxicity and Lipinski's rule of five. Molecular docking of shortlisted lead compounds was performed using AutoDock Vina and interacting residues were visualized. RESULTS Active residues of Receptor Binding Motif (RBM) in S, involved in interaction with receptor, were found to be conserved in all 483 sequences. Using this RBM motif as a pharmacophore a total of 1327 lead compounds were predicted initially from all databases, however, only eight molecules fit the criteria for safe oral drugs. Conclusion: The RBM region of S interacts with Angiotensin Converting Enzyme 2 (ACE2) receptor and Glucose Regulated Protein 78 (GRP78) to mediate viral entry. Based on in silico analysis, the lead compounds scrutinized herewith interact with S, hence, can prevent its internalization in cell using ACE2 and GRP78 receptor.The compounds predicted in this study are based on rigorous computational analysis and the evaluation of predicted lead compounds can be promising in experimental studies.
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Affiliation(s)
- Muhammad Shehroz
- Department of Biotechnology, Virtual University of Pakistan, Peshawar, Pakistan
| | - Tahreem Zaheer
- Atta ur Rahman School of Applied Biosciences (ASAB), National University of Sciences and Technology (NUST), Islamabad, Pakistan
| | - Tanveer Hussain
- Department of Molecular Biology, Virtual University of Pakistan, Lahore, Pakistan
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314
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Fialkowski A, Gernez Y, Arya P, Weinacht KG, Kinane TB, Yonker LM. Insight into the pediatric and adult dichotomy of COVID-19: Age-related differences in the immune response to SARS-CoV-2 infection. Pediatr Pulmonol 2020; 55:2556-2564. [PMID: 32710693 DOI: 10.1002/ppul.24981] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/14/2020] [Revised: 07/09/2020] [Accepted: 07/21/2020] [Indexed: 12/17/2022]
Abstract
The difference in morbidity and mortality between adult and pediatric coronavirus disease 2019 infections is dramatic. Understanding pediatric-specific acute and delayed immune responses to severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is critical for the development of vaccination strategies, immune-targeted therapies, and treatment and prevention of multisystem inflammatory syndrome in children. The goal of this review is to highlight research developments in the understanding of the immune responses to SARS-CoV-2 infections, with a specific focus on age-related immune responses.
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Affiliation(s)
| | - Yael Gernez
- Department of Pediatric Allergy and Immunology, Stanford University, Stanford, California
| | - Puneeta Arya
- Harvard Medical School, Boston, Massachusetts.,Division of Cardiology, Massachusetts General Hospital for Children, Boston, Massachusetts
| | - Katja G Weinacht
- Department of Stem Cell Transplantation and Regenerative Medicine, Stanford University, Stanford, California
| | - T Bernard Kinane
- Harvard Medical School, Boston, Massachusetts.,Division of Pulmonary, Massachusetts General Hospital for Children, Boston, Massachusetts
| | - Lael M Yonker
- Harvard Medical School, Boston, Massachusetts.,Division of Pulmonary, Massachusetts General Hospital for Children, Boston, Massachusetts
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315
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Peña López BO, Rincón Orozco B, Castillo León JJ. SARS-CoV-2: generalidades bioquímicas y métodos de diagnóstico. NOVA 2020. [DOI: 10.22490/24629448.4183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
El 31 de diciembre de 2019 la comisión municipal de salud de Wuhan (provincia de Hubei, China) informa sobre un inusitado brote de casos de neumonía en la ciudad. Posteriormente se determina que se trata de un nuevo coronavirus designado inicialmente como 2019-nCoV y posteriormente, SARS-CoV-2. El SARS-CoV-2 infecta y se replica en los neumocitos y macrófagos del sistema respiratorio específicamente en el parénquima pulmonar en donde reside el receptor celular ACE-2. Esta revisión describe aspectos relacionados con la transmisión, prevención, generalidades bioquímicas del SARS-CoV-2 y métodos diagnósticos del COVID-19. Inicialmente se describe la forma de transmisión del virus y algunas recomendaciones generales para su prevención. Posteriormente, se hace una descripción detallada de los aspectos bioquímicos del SARS-CoV-2, su ciclo infeccioso y la estructura de la proteína S, la cual está involucrada con el proceso de ingreso del virus a la célula. Finalmente, se describen los métodos y pruebas de laboratorio para el diagnóstico del COVID-19.
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316
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Holly JMP, Biernacka K, Maskell N, Perks CM. Obesity, Diabetes and COVID-19: An Infectious Disease Spreading From the East Collides With the Consequences of an Unhealthy Western Lifestyle. Front Endocrinol (Lausanne) 2020; 11:582870. [PMID: 33042029 PMCID: PMC7527410 DOI: 10.3389/fendo.2020.582870] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Accepted: 08/17/2020] [Indexed: 01/08/2023] Open
Abstract
The pandemic of COVID-19, caused by the coronavirus, SARS-CoV-2, has had a global impact not seen for an infectious disease for over a century. This acute pandemic has spread from the East and has been overlaid onto a slow pandemic of metabolic diseases of obesity and diabetes consequent from the increasing adoption of a Western-lifestyle characterized by excess calorie consumption with limited physical activity. It has become clear that these conditions predispose individuals to a more severe COVID-19 with increased morbidity and mortality. There are many features of diabetes and obesity that may accentuate the clinical response to SARS-CoV-2 infection: including an impaired immune response, an atherothrombotic state, accumulation of advanced glycation end products and a chronic inflammatory state. These could prime an exaggerated cytokine response to viral infection, predisposing to the cytokine storm that triggers progression to septic shock, acute respiratory distress syndrome, and multi-organ failure. Infection leads to an inflammatory response and tissue damage resulting in increased metabolic activity and an associated increase in the mechanisms by which cells ingest and degrade tissue debris and foreign materials. It is becoming clear that viruses have acquired an ability to exploit these mechanisms to invade cells and facilitate their own life-cycle. In obesity and diabetes these mechanisms are chronically activated due to the deteriorating metabolic state and this may provide an increased opportunity for a more profound and sustained viral infection.
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Affiliation(s)
- Jeff M. P. Holly
- Faculty of Medicine, School of Translational Health Science, Southmead Hospital, University of Bristol, Bristol, United Kingdom
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317
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Komatsu K, Kumon K, Arita M, Onitsuka M, Omasa T, Yohda M. Effect of the disulfide isomerase PDIa4 on the antibody production of Chinese hamster ovary cells. J Biosci Bioeng 2020; 130:637-643. [PMID: 32878739 DOI: 10.1016/j.jbiosc.2020.08.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Revised: 07/22/2020] [Accepted: 08/02/2020] [Indexed: 12/30/2022]
Abstract
Therapeutic monoclonal antibodies recognize and bind specific molecules on the surface of target cells, stimulating the immune system, which can attack these targeted cells. These antibodies are produced by mammalian cells, including Chinese hamster ovary (CHO) cells, because the formation of antibodies requires complicated posttranslational modifications, including peptidyl-prolyl cis/trans isomerization, disulfide bond formation, and glycosylation. Currently, it is thought that the efficient production of secretory proteins is limited by posttranslational processes. The ER is the biosynthesis site of all secreted and membrane proteins. The accumulation of unfolded proteins in the ER causes the ER stress response. During the ER stress state, various molecular chaperones are expressed to prevent proteins from the aggregate formation. The molecular chaperone involved in ER stress likely plays an essential role in the production of secretory proteins. The purpose of this study was to improve the production of monoclonal antibodies by cells. We elucidated the function of ER chaperones in the production of a monoclonal antibody. First, we quantitatively measured the mRNA expression levels of protein disulfide-isomerase family members. In CHO HcD6 cells treated with tunicamycin, the expression level of pdia4 was significantly increased. Second, we investigated the relationship between PDIa4 and antibody productivity in pdia4-knockdown cells. Both a decrease in the amount of secreted antibody and the accumulation of immature antibodies inside the cells were observed. Recombinant PDIa4 was able to refold the antibodies and Fabs. These results indicate that PDIa4 affects the production of monoclonal antibodies by catalyzing disulfide bond formation in these antibodies in CHO cells.
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Affiliation(s)
- Kei Komatsu
- Department of Biotechnology and Life Science, Tokyo University of Agriculture and Technology, Koganei, Tokyo 184-8588, Japan
| | - Kento Kumon
- Department of Biotechnology and Life Science, Tokyo University of Agriculture and Technology, Koganei, Tokyo 184-8588, Japan
| | - Mayuno Arita
- Department of Biotechnology and Life Science, Tokyo University of Agriculture and Technology, Koganei, Tokyo 184-8588, Japan
| | - Masayoshi Onitsuka
- Graduate School of Technology, Industrial and Social Sciences, Tokushima University, 2-1 Minamijosanjima-cho, Tokushima 770-8513, Japan
| | - Takeshi Omasa
- Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Masafumi Yohda
- Department of Biotechnology and Life Science, Tokyo University of Agriculture and Technology, Koganei, Tokyo 184-8588, Japan.
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318
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Joshi S, Joshi M, Degani MS. Tackling SARS-CoV-2: proposed targets and repurposed drugs. Future Med Chem 2020; 12:1579-1601. [PMID: 32564623 PMCID: PMC7307730 DOI: 10.4155/fmc-2020-0147] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Accepted: 06/03/2020] [Indexed: 12/15/2022] Open
Abstract
The SARS-CoV-2 pandemic, declared as a global health emergency by the WHO in February 2020, has currently infected more than 6 million people with fatalities near 371,000 and increasing exponentially, in absence of vaccines and drugs. The pathogenesis of SARS-CoV-2 is still being elucidated. Identifying potential targets and repurposing drugs as therapeutic options is the need of the hour. In this review, we focus on potential druggable targets and suitable therapeutics, currently being explored in clinical trials, to treat SARS-CoV-2 infection. A brief understanding of the complex interactions of both viral as well as host targets, and the possible repurposed drug candidates are described with an emphasis on understanding the mechanisms at the molecular level.
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Affiliation(s)
- Siddhi Joshi
- Department of Pharmaceutical Sciences & Technology, Institute of Chemical Technology, Nathalal Parekh Marg, Mumbai, 400019, Maharashtra, India
| | - Maithili Joshi
- Department of Pharmaceutical Sciences & Technology, Institute of Chemical Technology, Nathalal Parekh Marg, Mumbai, 400019, Maharashtra, India
| | - Mariam S Degani
- Department of Pharmaceutical Sciences & Technology, Institute of Chemical Technology, Nathalal Parekh Marg, Mumbai, 400019, Maharashtra, India
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319
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Chou CW, Yang RY, Chan LC, Li CF, Sun L, Lee HH, Lee PC, Sher YP, Ying H, Hung MC. The stabilization of PD-L1 by the endoplasmic reticulum stress protein GRP78 in triple-negative breast cancer. Am J Cancer Res 2020; 10:2621-2634. [PMID: 32905506 PMCID: PMC7471351] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Accepted: 07/28/2020] [Indexed: 06/11/2023] Open
Abstract
The immune checkpoint blockade therapy has emerged as encouraging treatment strategies in various cancer types. Anti-PD-L1 (programmed death-ligand 1) antibodies have been approved for triple-negative breast cancer, however the response rate yet to be optimized. It would be imperative to further understand and investigate the molecular mechanisms of PD-L1 regulation. Here, we identified glucose regulatory protein 78 (GRP78), a major endoplasmic reticulum (ER) stress responding protein, as a novel binding partner of PD-L1. GRP78 interacts with PD-L1 at the ER region and increases PD-L1 levels via regulating its stability. ER stress, triggered by different stimuli such as conventional chemotherapy, leads to the induction of PD-L1 in a GRP78-dependent manner. We showed that GRP78 modulates the response to chemotherapy, and dual-high levels of GRP78 and PD-L1 correlates with poor relapse-free survival in triple-negative breast cancer. Altogether, our study provides novel molecular insights into the regulatory mechanism of PD-L1 by revealing its interaction with GRP78, and offers a rationale to target GRP78 as a potential therapeutic strategy to enhance anti-tumor immunity.
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Affiliation(s)
- Cheng-Wei Chou
- Graduate Institute of Biomedical Sciences, China Medical UniversityTaichung 404, Taiwan
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer CenterHouston, TX 77030, USA
- Division of Hematology/Medical Oncology, Department of Medicine, Taichung Veterans General HospitalTaichung 407, Taiwan
| | - Ri-Yao Yang
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer CenterHouston, TX 77030, USA
| | - Li-Chuan Chan
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer CenterHouston, TX 77030, USA
| | - Ching-Fei Li
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer CenterHouston, TX 77030, USA
| | - Linlin Sun
- Tianjin Key Laboratory of Lung Cancer Metastasis and Tumor Microenvironment, Lung Cancer Institute, Tianjin Medical University General HospitalTianjin 30052, P. R. China
| | - Heng-Huan Lee
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer CenterHouston, TX 77030, USA
| | - Pei-Chih Lee
- Graduate Institute of Biomedical Sciences, China Medical UniversityTaichung 404, Taiwan
| | - Yuh-Pyng Sher
- Graduate Institute of Biomedical Sciences, China Medical UniversityTaichung 404, Taiwan
- Chinese Medicine Research Center, China Medical UniversityTaichung 404, Taiwan
- Center for Molecular Medicine, China Medical University HospitalTaichung 404, Taiwan
| | - Haoqiang Ying
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer CenterHouston, TX 77030, USA
| | - Mien-Chie Hung
- Graduate Institute of Biomedical Sciences, China Medical UniversityTaichung 404, Taiwan
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer CenterHouston, TX 77030, USA
- Department of Biotechnology, Asia UniversityTaichung 413, Taiwan
- Center for Molecular Medicine, China Medical University HospitalTaichung 404, Taiwan
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320
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Lu G, Luo H, Zhu X. Targeting the GRP78 Pathway for Cancer Therapy. Front Med (Lausanne) 2020; 7:351. [PMID: 32850882 PMCID: PMC7409388 DOI: 10.3389/fmed.2020.00351] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Accepted: 06/11/2020] [Indexed: 12/24/2022] Open
Abstract
The 78-kDa glucose-regulated protein (GRP78) plays an important part in maintaining protein stability, regulating protein folding, and inducing apoptosis autophagy, which is considered as a powerful protein. Meanwhile, it also plays a role in ensuring the normal function of organs. In recent years, more and more researches have been carried out on the targeted therapy of GRP78, mainly focusing on its relevant role in tumor and its role as a major modulator and modulator of subordinate pathways. The ability of GRP78 to respond to endoplasmic reticulum stress (ERS) determines whether tumor cells survive and whether the changes in expression level of GRP78 regulated by endoplasmic reticulum (ER) caused by various factors will directly or indirectly affect cell proliferation, apoptosis, and injury, or reduce the body's defense ability, or have protective effects on various organs.
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Affiliation(s)
- Guanhua Lu
- Guangdong Key Laboratory for Research and Development of Natural Drugs, The Marine Biomedical Research Institute, Guangdong Medical University, Zhanjiang, China
| | - Hui Luo
- Guangdong Key Laboratory for Research and Development of Natural Drugs, The Marine Biomedical Research Institute, Guangdong Medical University, Zhanjiang, China.,The Marine Biomedical Research Institute of Guangdong Zhanjiang, Zhanjiang, China.,Southern Marine Science and Engineering Guangdong Laboratory, Zhanjiang, China.,The Key Lab of Zhanjiang for R&D Marine Microbial Resources in the Beibu Gulf Rim, Guangdong Medical University, Zhanjiang, China
| | - Xiao Zhu
- Guangdong Key Laboratory for Research and Development of Natural Drugs, The Marine Biomedical Research Institute, Guangdong Medical University, Zhanjiang, China.,The Marine Biomedical Research Institute of Guangdong Zhanjiang, Zhanjiang, China.,Southern Marine Science and Engineering Guangdong Laboratory, Zhanjiang, China.,The Key Lab of Zhanjiang for R&D Marine Microbial Resources in the Beibu Gulf Rim, Guangdong Medical University, Zhanjiang, China
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321
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Razzaghi-Asl N, Ebadi A, Shahabipour S, Gholamin D. Identification of a potential SARS-CoV2 inhibitor via molecular dynamics simulations and amino acid decomposition analysis. J Biomol Struct Dyn 2020; 39:6633-6648. [PMID: 32705953 PMCID: PMC7441780 DOI: 10.1080/07391102.2020.1797536] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Considering lack of validated therapeutic drugs or vaccines against contagious SARS-CoV2, various efforts have been focused on repurposing of existing drugs or identifying new agents. In an attempt to identify new and potential SARS-CoV2 inhibitors targeting specific enzyme of the pathogen, a few induced fit models of SARS-CoV2 main protease (Mpro) including N-aryl amide and aryl sulfonamide based fragments were subjected to a multi-step in silico strategy. Sub-structure query of co-crystallographic fragments provided numerous ZINC15 driven commercially available compounds that entered molecular docking stage to find binding interactions/modes inside Mpro active site. Docking results were reevaluated through time dependent stability of top-ranked ligand-protease complexes by molecular dynamics (MD) simulations within 50 ns. Relative contribution of interacted residues in binding to the most probable binding pose was estimated through amino acid decomposition analysis in B3LYP level of theory with Def2-TZVPP split basis set. In confirmation of docking results, MD simulations revealed less perceptible torsional distortions (more stable binding mode) in binding of ZINC_252512772 (ΔGb −9.18 kcal/mol) into Mpro active site. H-bond interactions and hydrophobic contacts were determinant forces in binding interactions of in silico hit. Quantum chemical calculations confirmed MD results and proved the pivotal role of a conserved residue (Glu166) in making permanent hydrogen bond (98% of MD simulations time) with ZINC_252512772. Drug-like physicochemical properties as well as desirable target binding interactions nominated ZINC_252512772 as a desirable in silico hit for further development toward SARS-CoV2 inhibitors. Highlights A few N-aryl amide/aryl sulfonamide based fragments were subjected to a multi-step in silico strategy to afford potential SARS-CoV2 Mpro inhibitors. MD simulations revealed less perceptible torsional distortions (more stable binding mode) in binding of ZINC_252512772 (ΔGb -9.18 kcal/mol) into Mpro active site. H-bond interactions and hydrophobic contacts were determinant forces in binding interactions of in silico hit. Quantum chemical calculations confirmed MD results and proved pivotal role of a conserved residue (Glu166) in making permanent hydrogen bond (98% of MD simulations time) with ZINC_252512772.
Communicated by Ramaswamy H. Sarma
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Affiliation(s)
- Nima Razzaghi-Asl
- Department of Medicinal Chemistry, School of Pharmacy, Ardabil University of Medical Sciences, Ardabil, Iran
| | - Ahmad Ebadi
- Department of Medicinal Chemistry, School of Pharmacy, Medicinal Plants and Natural Products Research Center, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Sara Shahabipour
- Department of Medicinal Chemistry, School of Pharmacy, Ardabil University of Medical Sciences, Ardabil, Iran
| | - Danial Gholamin
- Students Research Committee, School of Pharmacy, Ardabil University of Medical Sciences, Ardabil, Iran
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322
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Corral-Lugo A, López-Siles M, López D, McConnell MJ, Martin-Galiano AJ. Identification and Analysis of Unstructured, Linear B-Cell Epitopes in SARS-CoV-2 Virion Proteins for Vaccine Development. Vaccines (Basel) 2020; 8:E397. [PMID: 32698423 PMCID: PMC7564417 DOI: 10.3390/vaccines8030397] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Revised: 07/14/2020] [Accepted: 07/17/2020] [Indexed: 12/13/2022] Open
Abstract
The efficacy of SARS-CoV-2 nucleic acid-based vaccines may be limited by proteolysis of the translated product due to anomalous protein folding. This may be the case for vaccines employing linear SARS-CoV-2 B-cell epitopes identified in previous studies since most of them participate in secondary structure formation. In contrast, we have employed a consensus of predictors for epitopic zones plus a structural filter for identifying 20 unstructured B-cell epitope-containing loops (uBCELs) in S, M, and N proteins. Phylogenetic comparison suggests epitope switching with respect to SARS-CoV in some of the identified uBCELs. Such events may be associated with the reported lack of serum cross-protection between the 2003 and 2019 pandemic strains. Incipient variability within a sample of 1639 SARS-CoV-2 isolates was also detected for 10 uBCELs which could cause vaccine failure. Intermediate stages of the putative epitope switch events were observed in bat coronaviruses in which additive mutational processes possibly facilitating evasion of the bat immune system appear to have taken place prior to transfer to humans. While there was some overlap between uBCELs and previously validated SARS-CoV B-cell epitopes, multiple uBCELs had not been identified in prior studies. Overall, these uBCELs may facilitate the development of biomedical products for SARS-CoV-2.
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Affiliation(s)
- Andrés Corral-Lugo
- Intrahospital Infections Unit, National Centre for Microbiology, Instituto de Salud Carlos III (ISCIII), 28220 Madrid, Spain; (A.C.-L.); (M.L.-S.)
| | - Mireia López-Siles
- Intrahospital Infections Unit, National Centre for Microbiology, Instituto de Salud Carlos III (ISCIII), 28220 Madrid, Spain; (A.C.-L.); (M.L.-S.)
| | - Daniel López
- Immune Presentation and Regulation Unit, Instituto de Salud Carlos III, 28220 Madrid, Spain;
| | - Michael J. McConnell
- Intrahospital Infections Unit, National Centre for Microbiology, Instituto de Salud Carlos III (ISCIII), 28220 Madrid, Spain; (A.C.-L.); (M.L.-S.)
| | - Antonio J. Martin-Galiano
- Intrahospital Infections Unit, National Centre for Microbiology, Instituto de Salud Carlos III (ISCIII), 28220 Madrid, Spain; (A.C.-L.); (M.L.-S.)
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323
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The COVID-19 pandemic: biological evolution, treatment options and consequences. INNOVATIVE INFRASTRUCTURE SOLUTIONS 2020. [PMCID: PMC7330532 DOI: 10.1007/s41062-020-00325-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The spread of novel coronavirus SARS-CoV-2, the cause of the pandemic COVID-19 has emerged as a global matter of concern in the last couple of months. It has rapidly spread around the globe, which initially began in the city of Wuhan, People’s Republic of China and is hypothesized to originate from the group of Rhinolophus bats. Till date, there has been no clinically proven vaccine against the SARS-CoV-2 and thus the doctors are employing the other well-known techniques, which have previously successfully tackled similar other human coronaviruses. To prevent the further spread of COVID-19, doctors are advising isolation of the infected patients, and also regular washing of hands and the use of face mask for the common people. In the wake of the COVID-19 outbreak, the countries are going for nationwide lockdown as the only preventive measure to avert community transmission of this disease, which is having economic, social and psychological effect on the general mass. Therefore, this comprehensive review article encapsulates the biological evolution of human coronaviruses, probable treatment and control strategies to combat COVID-19 and, its impact on human life.
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324
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Izumi C, Laure HJ, Barbosa NG, Hassibe Thomé C, Aguiar Ferreira G, Paulo Barreto Sousa J, Peporine Lopes N, César Rosa J. Sequesterpene Lactones Isolated from a Brazilian Cerrado Plant ( Eremanthus spp. ) as Anti-Proliferative Compounds, Characterized by Functional and Proteomic Analysis, are Candidates for New Therapeutics in Glioblastoma. Int J Mol Sci 2020; 21:ijms21134713. [PMID: 32630308 PMCID: PMC7369765 DOI: 10.3390/ijms21134713] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Revised: 03/03/2020] [Accepted: 03/05/2020] [Indexed: 12/13/2022] Open
Abstract
Gliomas are responsible for more than 60% of all primary brain tumors. Glioblastoma multiforme (GBM), a grade IV tumor (WHO), is one of the most frequent and malignant gliomas. Despite two decades of advances in the discovery of new markers for GBM, the chemotherapy of choice falls to temozolomide after surgery and radiotherapy, which are not enough to increase the survival of patients to more than 15 months. It is urgent to discover new anti-glioma compounds. Many compounds derived from natural products have been used in the development of anti-tumor drugs. In this work, we have screened six low molecular weight sesquiterpene lactones, isolated from Eremanthus spp., and studied their function as anti-proliferative agents against GBM strains. We demonstrated that two of them, goyazensolide and lychnofolide, were effective in reducing cell viability, preventing the formation of anchorage-dependent colony and were able to pass through a mimetic blood-brain barrier making them candidates for glioma therapy, being more potent than temozolomide, according to in vitro assays for the cell lines tested. Proteomic analysis revealed a number of altered proteins involved in glycolytic metabolism and cellular catabolism.
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Affiliation(s)
- Clarice Izumi
- Protein Chemistry Center and Department of Cell and Molecular Biology and Pathogenic Bioagents, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto 14049-900, SP, Brazil; (H.J.L.); (N.G.B.); (J.C.R.)
- Correspondence: ; Tel.: +55-16-2101-9366
| | - Helen Julie Laure
- Protein Chemistry Center and Department of Cell and Molecular Biology and Pathogenic Bioagents, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto 14049-900, SP, Brazil; (H.J.L.); (N.G.B.); (J.C.R.)
| | - Nayara Gonçalves Barbosa
- Protein Chemistry Center and Department of Cell and Molecular Biology and Pathogenic Bioagents, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto 14049-900, SP, Brazil; (H.J.L.); (N.G.B.); (J.C.R.)
| | - Carolina Hassibe Thomé
- Department of Biochemistry and Immunology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto 14040-900, SP, Brazil; (C.H.T.); (G.A.F.)
| | - Germano Aguiar Ferreira
- Department of Biochemistry and Immunology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto 14040-900, SP, Brazil; (C.H.T.); (G.A.F.)
| | - João Paulo Barreto Sousa
- Núcleo de Pesquisas de Produtos Naturais e Sintéticos, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto 14040-903, SP, Brazil; (J.P.B.S.); (N.P.L.)
| | - Norberto Peporine Lopes
- Núcleo de Pesquisas de Produtos Naturais e Sintéticos, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto 14040-903, SP, Brazil; (J.P.B.S.); (N.P.L.)
| | - José César Rosa
- Protein Chemistry Center and Department of Cell and Molecular Biology and Pathogenic Bioagents, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto 14049-900, SP, Brazil; (H.J.L.); (N.G.B.); (J.C.R.)
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Ubiquitin C-terminal hydrolase L1 (UCHL1) regulates post-myocardial infarction cardiac fibrosis through glucose-regulated protein of 78 kDa (GRP78). Sci Rep 2020; 10:10604. [PMID: 32606430 PMCID: PMC7326919 DOI: 10.1038/s41598-020-67746-4] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Accepted: 06/12/2020] [Indexed: 02/07/2023] Open
Abstract
Abnormal cardiac fibrosis indicates cardiac dysfunction and poor prognosis in myocardial infarction (MI) patients. Many studies have demonstrated that the ubiquitin proteasome system (UPS) plays a significant role in the pathogenesis of fibrosis. Ubiquitin C-terminal hydrolase L1 (UCHL1), a member of the UPS, is related to fibrosis in several heart diseases. However, whether UCHL1 regulates cardiac fibrosis following MI has yet to be determined. In the present study, we found that UCHL1 was dramatically increased in infarct hearts and TGF-β1-stimulated cardiac fibroblasts (CFs). Inhibition of UCHL1 with LDN57444 (LDN) reversed the myocardial fibrosis in post-MI heart and improved cardiac function. Treatment of LDN or UCHL1 siRNA abolished the TGF-β1-induced fibrotic response of CFs. We further identified GRP78 as an interactor of UCHL1 through screening using immunoprecipitation-mass spectrometer. We determined that UCHL1 interacted with glucose-regulated protein of 78 kDa (GRP78) and prompted GRP78 degradation via ubiquitination. Furthermore, we found that GRP78 was upregulated after UCHL1 knockdown and that the GRP78 inhibitor HA15 diminished the antifibrotic function exerted by UCHL1 knockdown in CFs stimulated with TGF-β1. This suggests that UCHL1 regulates cardiac fibrosis post MI through interactions with GRP78. This work identifies that the UCHL1-GRP78 axis is involved in cardiac fibrosis after MI.
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326
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Multiple Herpes Simplex Virus-1 (HSV-1) Reactivations Induce Protein Oxidative Damage in Mouse Brain: Novel Mechanisms for Alzheimer's Disease Progression. Microorganisms 2020; 8:microorganisms8070972. [PMID: 32610629 PMCID: PMC7409037 DOI: 10.3390/microorganisms8070972] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Revised: 06/26/2020] [Accepted: 06/27/2020] [Indexed: 12/24/2022] Open
Abstract
Compelling evidence supports the role of oxidative stress in Alzheimer's disease (AD) pathophysiology. Interestingly, Herpes simplex virus-1 (HSV-1), a neurotropic virus that establishes a lifelong latent infection in the trigeminal ganglion followed by periodic reactivations, has been reportedly linked both to AD and to oxidative stress conditions. Herein, we analyzed, through biochemical and redox proteomic approaches, the mouse model of recurrent HSV-1 infection we previously set up, to investigate whether multiple virus reactivations induced oxidative stress in the mouse brain and affected protein function and related intracellular pathways. Following multiple HSV-1 reactivations, we found in mouse brains increased levels of oxidative stress hallmarks, including 4-hydroxynonenal (HNE), and 13 HNE-modified proteins whose levels were found significantly altered in the cortex of HSV-1-infected mice compared to controls. We focused on two proteins previously linked to AD pathogenesis, i.e., glucose-regulated protein 78 (GRP78) and collapsin response-mediated protein 2 (CRMP2), which are involved in the unfolded protein response (UPR) and in microtubule stabilization, respectively. We found that recurrent HSV-1 infection disables GRP78 function and activates the UPR, whereas it prevents CRMP2 function in mouse brains. Overall, these data suggest that repeated HSV-1 reactivation into the brain may contribute to neurodegeneration also through oxidative damage.
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327
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SARS-CoV-2 Evolutionary Adaptation toward Host Entry and Recognition of Receptor O-Acetyl Sialylation in Virus-Host Interaction. Int J Mol Sci 2020; 21:ijms21124549. [PMID: 32604730 PMCID: PMC7352545 DOI: 10.3390/ijms21124549] [Citation(s) in RCA: 56] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Revised: 06/15/2020] [Accepted: 06/22/2020] [Indexed: 02/06/2023] Open
Abstract
The recently emerged SARS-CoV-2 is the cause of the global health crisis of the coronavirus disease 2019 (COVID-19) pandemic. No evidence is yet available for CoV infection into hosts upon zoonotic disease outbreak, although the CoV epidemy resembles influenza viruses, which use sialic acid (SA). Currently, information on SARS-CoV-2 and its receptors is limited. O-acetylated SAs interact with the lectin-like spike glycoprotein of SARS CoV-2 for the initial attachment of viruses to enter into the host cells. SARS-CoV-2 hemagglutinin-esterase (HE) acts as the classical glycan-binding lectin and receptor-degrading enzyme. Most β-CoVs recognize 9-O-acetyl-SAs but switched to recognizing the 4-O-acetyl-SA form during evolution of CoVs. Type I HE is specific for the 9-O-Ac-SAs and type II HE is specific for 4-O-Ac-SAs. The SA-binding shift proceeds through quasi-synchronous adaptations of the SA-recognition sites of the lectin and esterase domains. The molecular switching of HE acquisition of 4-O-acetyl binding from 9-O-acetyl SA binding is caused by protein–carbohydrate interaction (PCI) or lectin–carbohydrate interaction (LCI). The HE gene was transmitted to a β-CoV lineage A progenitor by horizontal gene transfer from a 9-O-Ac-SA–specific HEF, as in influenza virus C/D. HE acquisition, and expansion takes place by cross-species transmission over HE evolution. This reflects viral evolutionary adaptation to host SA-containing glycans. Therefore, CoV HE receptor switching precedes virus evolution driven by the SA-glycan diversity of the hosts. The PCI or LCI stereochemistry potentiates the SA–ligand switch by a simple conformational shift of the lectin and esterase domains. Therefore, examination of new emerging viruses can lead to better understanding of virus evolution toward transitional host tropism. A clear example of HE gene transfer is found in the BCoV HE, which prefers 7,9-di-O-Ac-SAs, which is also known to be a target of the bovine torovirus HE. A more exciting case of such a switching event occurs in the murine CoVs, with the example of the β-CoV lineage A type binding with two different subtypes of the typical 9-O-Ac-SA (type I) and the exclusive 4-O-Ac-SA (type II) attachment factors. The protein structure data for type II HE also imply the virus switching to binding 4-O acetyl SA from 9-O acetyl SA. Principles of the protein–glycan interaction and PCI stereochemistry potentiate the SA–ligand switch via simple conformational shifts of the lectin and esterase domains. Thus, our understanding of natural adaptation can be specified to how carbohydrate/glycan-recognizing proteins/molecules contribute to virus evolution toward host tropism. Under the current circumstances where reliable antiviral therapeutics or vaccination tools are lacking, several trials are underway to examine viral agents. As expected, structural and non-structural proteins of SARS-CoV-2 are currently being targeted for viral therapeutic designation and development. However, the modern global society needs SARS-CoV-2 preventive and therapeutic drugs for infected patients. In this review, the structure and sialobiology of SARS-CoV-2 are discussed in order to encourage and activate public research on glycan-specific interaction-based drug creation in the near future.
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Palmeira A, Sousa E, Köseler A, Sabirli R, Gören T, Türkçüer İ, Kurt Ö, Pinto MM, Vasconcelos MH. Preliminary Virtual Screening Studies to Identify GRP78 Inhibitors Which May Interfere with SARS-CoV-2 Infection. Pharmaceuticals (Basel) 2020; 13:E132. [PMID: 32630514 PMCID: PMC7345920 DOI: 10.3390/ph13060132] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Revised: 06/21/2020] [Accepted: 06/22/2020] [Indexed: 12/18/2022] Open
Abstract
SARS-CoV-2 Spike protein was predicted by molecular docking to bind the host cell surface GRP78, which was suggested as a putative good molecular target to inhibit Covid-19. We aimed to confirm that GRP78 gene expression was increased in blood of SARS-CoV-2 (+) versus SARS-CoV-2 (-) pneumonia patients. In addition, we aimed to identify drugs that could be repurposed to inhibit GRP78, thus with potential anti-SARS-CoV-2 activity. Gene expression studies were performed in 10 SARS-CoV-2 (-) and 24 SARS-CoV-2 (+) pneumonia patients. A structure-based virtual screen was performed with 10,761 small molecules retrieved from DrugBank, using the GRP78 nucleotide binding domain and substrate binding domain as molecular targets. Results indicated that GRP78 mRNA levels were approximately four times higher in the blood of SARS-CoV-2 (+) versus SARS-CoV-2 (-) pneumonia patients, further suggesting that GRP78 might be a good molecular target to treat Covid-19. In addition, a total of 409 compounds were identified with potential as GRP78 inhibitors. In conclusion, we found preliminary evidence that further proposes GRP78 as a possible molecular target to treat Covid-19 and that many clinically approved drugs bind GRP78 as an off-target effect. We suggest that further work should be urgently carried out to confirm if GRP78 is indeed a good molecular target and if some of those drugs have potential to be repurposed for SARS-CoV-2 antiviral activity.
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Affiliation(s)
- Andreia Palmeira
- Laboratory of Organic and Pharmaceutical Chemistry (LQOF), Department of Chemical Sciences, Faculty of Pharmacy, University of Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal; (A.P.); (E.S.); (M.M.P.)
- Interdisciplinary Centre of Marine and Environmental Research (CIIMAR), 4450-208 Matosinhos, Portugal
| | - Emília Sousa
- Laboratory of Organic and Pharmaceutical Chemistry (LQOF), Department of Chemical Sciences, Faculty of Pharmacy, University of Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal; (A.P.); (E.S.); (M.M.P.)
- Interdisciplinary Centre of Marine and Environmental Research (CIIMAR), 4450-208 Matosinhos, Portugal
| | - Aylin Köseler
- Department of Biophysics, Pamukkale University Faculty of Medicine, 20190 Denizli, Turkey
| | - Ramazan Sabirli
- Department of Emergency Medicine, Kafkas University Faculty of Medicine, 36000 Kars, Turkey;
| | - Tarık Gören
- Department of Emergency Medicine, Pamukkale University Faculty of Medicine, 20190 Denizli, Turkey; (T.G.); (İ.T.)
| | - İbrahim Türkçüer
- Department of Emergency Medicine, Pamukkale University Faculty of Medicine, 20190 Denizli, Turkey; (T.G.); (İ.T.)
| | - Özgür Kurt
- Department of Microbiology, Acibadem Mehmet Ali Aydinlar University School of Medicine, 34752 Istanbul, Turkey;
| | - Madalena M. Pinto
- Laboratory of Organic and Pharmaceutical Chemistry (LQOF), Department of Chemical Sciences, Faculty of Pharmacy, University of Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal; (A.P.); (E.S.); (M.M.P.)
- Interdisciplinary Centre of Marine and Environmental Research (CIIMAR), 4450-208 Matosinhos, Portugal
| | - M. Helena Vasconcelos
- Instituto de Investigação e Inovação em Saúde (i3S), University of Porto, 4200-135 Porto, Portugal
- Cancer Drug Resistance Group, Institute of Molecular Pathology and Immunology of the University of Porto (IPATIMUP), 4200-135 Porto, Portugal
- Laboratory of Microbiology, Department of Biological Sciences, Faculty of Pharmacy, University of Porto, 4050-313 Porto, Portugal
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329
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Elfiky AA, Ibrahim IM. Zika virus envelope - heat shock protein A5 (GRP78) binding site prediction. J Biomol Struct Dyn 2020; 39:5248-5260. [PMID: 32579073 DOI: 10.1080/07391102.2020.1784794] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Recent studies reported the association of the Zika virus (ZIKV) with a stress response receptor on the host cell membrane that facilitates viral entry. This host receptor was the heat shock protein A5 (HSPA5), also termed glucose-regulating protein 78 (GRP78). In this study, structural bioinformatics and molecular dynamics simulations were utilized to suggest the binding site of ZIKV envelope protein during the interaction with cell-surface GRP78. The Pep42 cyclic peptide was used as a profiler, as it was reported earlier, to target GRP78 on the cancer cell membrane selectively. Sequence and structural alignments show that part of the ZIKV envelope protein (C308-C339 region), in addition to its cyclic nature, has somehow sequence and structural similarities to the cyclic Pep42. Three amino acids in the ZIKV envelope were identical to those in the Pep42 peptide. Cyclic peptides dynamics are studied, and its binding to GRP78 is predicted. Protein-protein docking is further performed to explore the binding characteristics of the ZIKV envelope to GRP78. Results revealed that the binding was favorable between ZIKV envelope protein and GRP78. The docking pose revealed the involvement of the substrate-binding domain ß of GRP78 and the domain III of the ZIKV envelope protein in viral recognition for the host-cell.
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Affiliation(s)
- Abdo A Elfiky
- Biophysics Department, Faculty of Sciences, Cairo University, Giza, Egypt
| | - Ibrahim M Ibrahim
- Biophysics Department, Faculty of Sciences, Cairo University, Giza, Egypt
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330
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Wilson AE, Michaud SA, Jackson AM, Stenhouse G, Coops NC, Janz DM. Development and validation of protein biomarkers of health in grizzly bears. CONSERVATION PHYSIOLOGY 2020; 8:coaa056. [PMID: 32607241 PMCID: PMC7311831 DOI: 10.1093/conphys/coaa056] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/21/2019] [Revised: 04/09/2020] [Accepted: 05/31/2020] [Indexed: 06/11/2023]
Abstract
Large carnivores play critical roles in the maintenance and function of natural ecosystems; however, the populations of many of these species are in decline across the globe. Therefore, there is an urgent need to develop novel techniques that can be used as sensitive conservation tools to detect new threats to the health of individual animals well in advance of population-level effects. Our study aimed to determine the expression of proteins related to energetics, reproduction and stress in the skin of grizzly bears (Ursus arctos) using a liquid chromatography and multiple reaction monitoring mass spectrometry assay. We hypothesized that a suite of target proteins could be measured using this technique and that the expression of these proteins would be associated with biological (sex, age, sample location on body) and environmental (geographic area, season, sample year) variables. Small skin biopsies were collected from free-ranging grizzly bears in Alberta, Canada, from 2013 to 2019 (n = 136 samples from 111 individuals). Over 700 proteins were detected in the skin of grizzly bears, 19 of which were chosen as targets because of their established roles in physiological function. Generalized linear mixed model analysis was used for each target protein. Results indicate that sample year influenced the majority of proteins, suggesting that physiological changes may be driven in part by responses to changes in the environment. Season influenced the expression of proteins related to energetics, reproduction and stress, all of which were lower during fall compared to early spring. The expression of proteins related to energetics and stress varied by geographic area, while the majority of proteins that were affected by biological attributes (age class, sex and age class by sex interaction) were related to reproduction and stress. This study provides a novel method by which scientists and managers can further assess and monitor physiological function in wildlife.
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Affiliation(s)
- Abbey E Wilson
- Department of Veterinary Biomedical Sciences, University of Saskatchewan, 44 Campus Drive, Saskatoon, Saskatchewan S7N 5B3, Canada
| | - Sarah A Michaud
- The University of Victoria Genome BC Proteomics Centre, 4464 Markham St #3101, Victoria, British Columbia V8Z 7X8, Canada
| | - Angela M Jackson
- The University of Victoria Genome BC Proteomics Centre, 4464 Markham St #3101, Victoria, British Columbia V8Z 7X8, Canada
| | - Gordon Stenhouse
- Foothills Research Institute, Grizzly Bear Program, 1176 Switzer Drive, Hinton, Alberta T7V 1V3, Canada
| | - Nicholas C Coops
- Department of Forest Resource Management, University of British Columbia, 2424 Main Mall, Vancouver, British Columbia V6T 1Z4, Canada
| | - David M Janz
- Department of Veterinary Biomedical Sciences, University of Saskatchewan, 44 Campus Drive, Saskatoon, Saskatchewan S7N 5B3, Canada
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331
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Liu H, Xie S, Fang F, Kalvakolanu DV, Xiao W. SHQ1 is an ER stress response gene that facilitates chemotherapeutics-induced apoptosis via sensitizing ER-stress response. Cell Death Dis 2020; 11:445. [PMID: 32522979 PMCID: PMC7286909 DOI: 10.1038/s41419-020-2656-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Revised: 05/28/2020] [Accepted: 05/29/2020] [Indexed: 12/13/2022]
Abstract
SHQ1 was reported to control the biogenesis and assembly of H/ACA ribonucleoprotein particles (RNPs). It was independently isolated as a growth suppressor, GRIM1, in a genetic screen. Recent studies have indicated that SHQ1 inhibits prostate cancer growth and metastasis. SHQ1 facilitates MYC RNA splicing to promote T-acute lymphoblastic leukemia (T-ALL) development. Thus, the mechanisms of SHQ1 in cancers remain largely unknown. We report here that SHQ1 promotes tumor apoptosis and chemo-sensitivity in hepatocellular carcinoma (HCC) cells. In HCC tissues from patients, expression of SHQ1 was significantly decreased in the tumor compared to adjacent tissues. Experiments with HCC xenograft models revealed that restoring SHQ1 levels enhanced the anti-tumor activity of the endoplasmic reticulum (ER) stress inducer tunicamycin (TM) and common chemotherapy drug paclitaxel (PTX). Mechanistically, SHQ1 is an ER-stress response gene which is regulated by p50ATF6 and XBP1s through an ER stress response like element located on the SHQ1 promoter. SHQ1 interacts with the ER chaperone GRP78 to release ER sensors PERK/IRE1α/ATF6 from GRP78/ER-sensor complexes, leading to hyper-activation of unfolded protein response (UPR). In the persistent ER stress conditions of a HepG2 xenograft tumor model, SHQ1-mediated hyper-activation of ER-sensor signaling induces apoptosis. Our study thus demonstrates a SHQ1-mediated ER-stress response feedback loop that promotes tumor sensitivity to chemotherapeutics.
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Affiliation(s)
- Huimin Liu
- Department of Oncology of the First Affiliated Hospital, Division of Life Sciences and Medicine, University of Science and Technology of China, 230027, Anhui, Hefei, China.,Hefei National Laboratory for Physical Sciences at Microscale, the CAS Key Laboratory of Innate Immunity and Chronic Disease, School of Life Sciences, University of Science and Technology of China, Hefei, China.,Institute of Immunology, University of Science and Technology of China, Hefei, China.,Engineering Technology Research Center of Biotechnology Drugs Anhui, University of Science and Technology of China, 230027, Anhui, Hefei, China
| | - Siqi Xie
- Department of Oncology of the First Affiliated Hospital, Division of Life Sciences and Medicine, University of Science and Technology of China, 230027, Anhui, Hefei, China.,Hefei National Laboratory for Physical Sciences at Microscale, the CAS Key Laboratory of Innate Immunity and Chronic Disease, School of Life Sciences, University of Science and Technology of China, Hefei, China.,Institute of Immunology, University of Science and Technology of China, Hefei, China.,Engineering Technology Research Center of Biotechnology Drugs Anhui, University of Science and Technology of China, 230027, Anhui, Hefei, China
| | - Fang Fang
- Department of Oncology of the First Affiliated Hospital, Division of Life Sciences and Medicine, University of Science and Technology of China, 230027, Anhui, Hefei, China. .,Hefei National Laboratory for Physical Sciences at Microscale, the CAS Key Laboratory of Innate Immunity and Chronic Disease, School of Life Sciences, University of Science and Technology of China, Hefei, China. .,Institute of Immunology, University of Science and Technology of China, Hefei, China. .,Engineering Technology Research Center of Biotechnology Drugs Anhui, University of Science and Technology of China, 230027, Anhui, Hefei, China.
| | - Dhananjaya V Kalvakolanu
- Department of Microbiology and Greenebaum Comprehensive Cancer Center, University of Maryland School of Medicine, Baltimore, MD, 21201, USA.
| | - Weihua Xiao
- Department of Oncology of the First Affiliated Hospital, Division of Life Sciences and Medicine, University of Science and Technology of China, 230027, Anhui, Hefei, China. .,Hefei National Laboratory for Physical Sciences at Microscale, the CAS Key Laboratory of Innate Immunity and Chronic Disease, School of Life Sciences, University of Science and Technology of China, Hefei, China. .,Institute of Immunology, University of Science and Technology of China, Hefei, China. .,Engineering Technology Research Center of Biotechnology Drugs Anhui, University of Science and Technology of China, 230027, Anhui, Hefei, China.
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332
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Köseler A, Sabirli R, Gören T, Türkçüer I, Kurt Ö. Endoplasmic Reticulum Stress Markers in SARS-COV-2 Infection and Pneumonia: Case-Control Study. In Vivo 2020; 34:1645-1650. [PMID: 32503824 DOI: 10.21873/invivo.11956] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2020] [Revised: 04/08/2020] [Accepted: 04/10/2020] [Indexed: 12/11/2022]
Abstract
BACKGROUND/AIM A novel human coronavirus, named SARS-COV-2, has recently caused thousands of deaths all around the world. Endoplasmic reticulum (ER) stress plays an important role in the development of diseases. PATIENTS AND METHODS We aimed to to investigate the relationship between ER stress markers in patients infected with SARS-COV-2 and patients with pneumonia. A total of 9 patients (4 patients diagnosed with pneumonia and 5 patients diagnosed with SARS-COV-2 infection) who admitted to the emergency Department with symptoms of pneumonia and SARS-COV-2 were included in the study. A total of 18 healthy individuals without any known chronic or acute disease and drug use were included as the healthy control group. Serum human glucose regulated protein 78 (GRP78), serum human C/EBP homologous protein (CHOP) and serum human phospho extracellular signal regulated kinase (PERK) levels were measured using enzyme-linked immunosorbent assay (ELISA). RESULTS GRP78 levels were found to be significantly higher in SARS-COV-2 positive cases compared to individuals in other groups. Serum GRP-78 level median value was statistically significantly higher in SARS-COV-2-positive group compared to the other groups (p=0.0003). Serum PERK level was statistically significantly higher in SARS-COV-2-positive pneumonia cases (p=0.046). CONCLUSION An association was shown between GRP78 and SARS-COV-2 infection. Although a small number of patients was investigated, these results will be important and guide future treatments of SARS-COV-2.
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Affiliation(s)
- Aylin Köseler
- Department of Biophysics, Pamukkale University Faculty of Medicine, Denizli, Turkey
| | - Ramazan Sabirli
- Department of Emergency Medicine, Kafkas University Faculty of Medicine, Kars, Turkey
| | - Tarik Gören
- Department of Emergency Medicine, Pamukkale University Faculty of Medicine, Denizli, Turkey
| | - Ibrahim Türkçüer
- Department of Emergency Medicine, Pamukkale University Faculty of Medicine, Denizli, Turkey
| | - Özgür Kurt
- Department of Microbiology, Acibadem Mehmet Ali Aydinlar University School of Medicine, Istanbul, Turkey
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333
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Alonso-Trujillo M, Muñiz-González AB, Martínez-Guitarte JL. Endosulfan exposure alters transcription of genes involved in the detoxification and stress responses in Physella acuta. Sci Rep 2020; 10:7847. [PMID: 32398709 PMCID: PMC7217849 DOI: 10.1038/s41598-020-64554-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2019] [Accepted: 04/20/2020] [Indexed: 12/11/2022] Open
Abstract
Endosulfan is a persistent pesticide that has been in use for more than five decades. During this time, it has contaminated soil, air, and water reservoirs worldwide. It is extremely toxic and harmful to beneficial non-target invertebrates, aquatic life, and even humans upon consumption, which is one of the many dangers of this pesticide since it biomagnifies in the food chain. The effects of three endosulfan concentrations (1, 10, and 100 µg/L) on the freshwater snail Physella acuta, an invasive cosmopolitan species, were examined over a week-long exposure period. Alterations in the expression of ten genes related to stress and xenobiotic detoxification were measured against the endogenous controls rpL10 and GAPDH by Real-Time polymerase chain reaction. Four genes are described here for the first time in this species, namely Hsp60, Grp78, GSTk1, and GSTm1. The rest of genes were Hsp90, sHsp16.6, cyp2u1, cyp3a7, cyp4f22, and MRP1. cyp2u1, sHsp16.6, and Grp78 expression were all altered by endosulfan. These results suggest a low pesticide concentration activates the acute response in P. acuta by affecting detoxification and stress responses and alter endoplasmic reticulum function and lipid metabolism. Furthermore, the newly identified genes extend the number of processes and cellular locations that can be analyzed in this organism.
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Affiliation(s)
- María Alonso-Trujillo
- Grupo de Biología y Toxicología Ambiental. Facultad de Ciencias. Universidad Nacional de Educación a Distancia, UNED. Senda del Rey 9, 28040, Madrid, Spain
| | - Ana-Belén Muñiz-González
- Grupo de Biología y Toxicología Ambiental. Facultad de Ciencias. Universidad Nacional de Educación a Distancia, UNED. Senda del Rey 9, 28040, Madrid, Spain
| | - José-Luis Martínez-Guitarte
- Grupo de Biología y Toxicología Ambiental. Facultad de Ciencias. Universidad Nacional de Educación a Distancia, UNED. Senda del Rey 9, 28040, Madrid, Spain.
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Glucose-Regulated Protein 78 Interacts with Zika Virus Envelope Protein and Contributes to a Productive Infection. Viruses 2020; 12:v12050524. [PMID: 32397571 PMCID: PMC7290722 DOI: 10.3390/v12050524] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Revised: 05/01/2020] [Accepted: 05/05/2020] [Indexed: 12/23/2022] Open
Abstract
Zika virus (ZIKV; Flaviviridae) is a mosquito-borne flavivirus shown to cause fetal abnormalities collectively known as congenital Zika syndrome and Guillain-Barré syndrome in recent outbreaks. Currently, there is no specific treatment or vaccine available, and more effort is needed to identify cellular factors in the viral life cycle. Here, we investigated interactors of ZIKV envelope (E) protein by combining protein pull-down with mass spectrometry. We found that E interacts with the endoplasmic reticulum (ER) resident chaperone, glucose regulated protein 78 (GRP78). Although other flaviviruses are known to co-opt ER resident proteins, including GRP78, to enhance viral infectivity, the role ER proteins play during the ZIKV life cycle is yet to be elucidated. We showed that GRP78 levels increased during ZIKV infection and localised to sites coincident with ZIKV E staining. Depletion of GRP78 using specific siRNAs significantly reduced reporter-virus luciferase readings, viral protein synthesis, and viral titres. Additionally, GRP78 depletion reduced the ability of ZIKV to disrupt host cell translation and altered the localisation of viral replication factories, though there was no effect on viral RNA synthesis. In summary, we showed GRP78 is a vital host-factor during ZIKV infection, which may be involved in the coordination of viral replication factories.
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335
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Ibrahim IM, Abdelmalek DH, Elshahat ME, Elfiky AA. COVID-19 spike-host cell receptor GRP78 binding site prediction. J Infect 2020; 80:554-562. [PMID: 32169481 PMCID: PMC7102553 DOI: 10.1016/j.jinf.2020.02.026] [Citation(s) in RCA: 344] [Impact Index Per Article: 86.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2020] [Accepted: 02/27/2020] [Indexed: 01/12/2023]
Abstract
OBJECTIVES Understanding the novel coronavirus (COVID-19) mode of host cell recognition may help to fight the disease and save lives. The spike protein of coronaviruses is the main driving force for host cell recognition. METHODS In this study, the COVID-19 spike binding site to the cell-surface receptor (Glucose Regulated Protein 78 (GRP78)) is predicted using combined molecular modeling docking and structural bioinformatics. The COVID-19 spike protein is modeled using its counterpart, the SARS spike. RESULTS Sequence and structural alignments show that four regions, in addition to its cyclic nature have sequence and physicochemical similarities to the cyclic Pep42. Protein-protein docking was performed to test the four regions of the spike that fit tightly in the GRP78 Substrate Binding Domain β (SBDβ). The docking pose revealed the involvement of the SBDβ of GRP78 and the receptor-binding domain of the coronavirus spike protein in recognition of the host cell receptor. CONCLUSIONS We reveal that the binding is more favorable between regions III (C391-C525) and IV (C480-C488) of the spike protein model and GRP78. Region IV is the main driving force for GRP78 binding with the predicted binding affinity of -9.8 kcal/mol. These nine residues can be used to develop therapeutics specific against COVID-19.
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Affiliation(s)
- Ibrahim M Ibrahim
- Biophysics Department, Faculty of Sciences, Cairo University, Giza, Egypt
| | - Doaa H Abdelmalek
- Biophysics Department, Faculty of Sciences, Cairo University, Giza, Egypt
| | | | - Abdo A Elfiky
- Biophysics Department, Faculty of Sciences, Cairo University, Giza, Egypt; College of Applied Medical Sciences, University of Al-Jouf, Saudi Arabia.
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336
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Elfiky AA. Ebola virus glycoprotein GP1-host cell-surface HSPA5 binding site prediction. Cell Stress Chaperones 2020; 25:541-548. [PMID: 32291698 PMCID: PMC7154572 DOI: 10.1007/s12192-020-01106-z] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Revised: 03/18/2020] [Accepted: 03/24/2020] [Indexed: 02/06/2023] Open
Abstract
Ebola virus (EBOV) infection is a widespread infection that has created a bad memory in Africa. In the 2014 and 2015 outbreak, more than 28,000 infections were reported by the World Health Organization, with about 11,300 deaths in Guinea, Liberia, and Sierra Leone. Heat shock protein A5 (HSPA5), termed also GRP78, is a host cell chaperone protein responsible for the unfolded protein response in the endoplasmic reticulum. Under stress, HSPA5 is upregulated and becomes cell-surface exposed. Recent studies report the association of cell-surface HSPA5 with EBOV glycoproteins GP1 and GP2. In this study, structural and sequence analysis and molecular docking are used to predict the possible binding site between the cell-surface HSPA5 and EBOV GP1. The results show a promising binding site that supports the hypothesis of HSPA5 selectivity for binding to a specific peptide sequence (pep42). This study paves the way to suggest possible inhibitors to stop viral association with cell-surface receptors and subsequently reduce viral infection.
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Affiliation(s)
- Abdo A Elfiky
- Biophysics Department, Faculty of Sciences, Cairo University, Giza, Egypt.
- College of Applied Medical Sciences, University of Al-Jouf, Sakaka, Saudi Arabia.
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337
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Elfiky AA, Ismail AM, Elshemey WM. Recognition of gluconeogenic enzymes; Icl1, Fbp1, and Mdh2 by Gid4 ligase: A molecular docking study. J Mol Recognit 2020; 33:e2831. [DOI: 10.1002/jmr.2831] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Revised: 12/03/2019] [Accepted: 12/04/2019] [Indexed: 02/03/2023]
Affiliation(s)
- Abdo A. Elfiky
- Biophysics Department, Faculty of ScienceCairo University Giza Egypt
- College of Applied Medical SciencesUniversity of Al‐Jouf Sakaka Saudi Arabia
| | - Alaa M. Ismail
- Biophysics Department, Faculty of ScienceCairo University Giza Egypt
| | - Wael M. Elshemey
- Biophysics Department, Faculty of ScienceCairo University Giza Egypt
- Department of Physics, Faculty of ScienceIslamic University in Madinah Medina Saudi Arabia
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338
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Aslan M, Afşar E, Kırımlıoglu E, Çeker T, Yılmaz Ç. Antiproliferative Effects of Thymoquinone in MCF-7 Breast and HepG2 Liver Cancer Cells: Possible Role of Ceramide and ER Stress. Nutr Cancer 2020; 73:460-472. [PMID: 32286088 DOI: 10.1080/01635581.2020.1751216] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
We aimed to investigate the impact of thymoquinone (TQ), on sphingolipid metabolites, ER stress and apoptotic pathways in MCF-7 and HepG2 cancer cells. Antiproliferative effect was exerted in cancer cells via TQ incubation at different doses and durations. Cell viability was measured by MTT assay. Levels of sphingosine-1-phosphate (S1P), C16-C24 sphingomyelins (SM) and C16-C24 ceramides (CER) were determined by LC-MS/MS. Neutral sphingomyelinase (N-SMase) enzyme activity was measured by colorimetric assay and ceramide-1-phosphate (C1P) levels were determined by immunoassay. Nuclear factor kappa-b subunit 1 (NFκB1) and glucose-regulated protein 78-kd (GRP78) gene expressions were evaluated by quantitative PCR analysis, while NF-κB p65, GRP 78 and cleaved caspase-3 protein levels were assesed by immunofluorescence and western blot analysis. Incubation with TQ significantly decreased cell viability, S1P, C1P, NF-κB1 mRNA and NF-κB p65 protein levels in cancer cells compared to controls. A significant increase was observed in N-SMase activity, cellular levels of C16-C24 CERs and cleaved caspase-3 levels in cancer cells treated with TQ. GRP78 mRNA and protein levels also increased in cancer cells treated with TQ. In conclusion, TQ-induced ceramide accumulation and ER stress in conjunction with decreased S1P, C1P and NF-κB mediated cell survival may promote cancer cell death by triggering apoptosis.
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Affiliation(s)
- Mutay Aslan
- Departments of Medical Biochemistry, Akdeniz University Faculty of Medicine, Antalya, Turkey
| | - Ebru Afşar
- Departments of Medical Biochemistry, Akdeniz University Faculty of Medicine, Antalya, Turkey
| | - Esma Kırımlıoglu
- Departments of Histology, Akdeniz University Faculty of Medicine, Antalya, Turkey
| | - Tuğçe Çeker
- Departments of Medical Biochemistry, Akdeniz University Faculty of Medicine, Antalya, Turkey
| | - Çağatay Yılmaz
- Departments of Medical Biochemistry, Akdeniz University Faculty of Medicine, Antalya, Turkey
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339
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Lax C, Pérez-Arques C, Navarro-Mendoza MI, Cánovas-Márquez JT, Tahiri G, Pérez-Ruiz JA, Osorio-Concepción M, Murcia-Flores L, Navarro E, Garre V, Nicolás FE. Genes, Pathways, and Mechanisms Involved in the Virulence of Mucorales. Genes (Basel) 2020; 11:E317. [PMID: 32188171 PMCID: PMC7140881 DOI: 10.3390/genes11030317] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Revised: 03/06/2020] [Accepted: 03/09/2020] [Indexed: 12/19/2022] Open
Abstract
The order Mucorales is a group of ancient fungi with limited tools for gene manipulation. The main consequence of this manipulation unwillingness is the limited knowledge about its biology compared to other fungal groups. However, the emerging of mucormycosis, a fungal infection caused by Mucorales, is attracting the medical spotlight in recent years because the treatments available are not efficient in reducing the high mortality associated with this disease. The result of this renewed interest in Mucorales and mucormycosis is an extraordinarily productive effort to unveil their secrets during the last decade. In this review, we describe the most compelling advances related to the genetic study of virulence factors, pathways, and molecular mechanisms developed in these years. The use of a few genetic study models has allowed the characterization of virulence factors in Mucorales that were previously described in other pathogens, such as the uptake iron systems, the mechanisms of dimorphism, and azole resistances. More importantly, recent studies are identifying new genes and mechanisms controlling the pathogenic potential of Mucorales and their interactions with the host, offering new alternatives to develop specific strategies against mucormycosis.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | - Francisco Esteban Nicolás
- Departamento de Genética y Microbiología, Facultad de Biología, Universidad de Murcia, 30100 Murcia, Spain; (C.L.); (C.P.-A.); (M.I.N.-M.); (J.T.C.-M.); (G.T.); (J.A.P.-R.); (M.O.-C.); (L.M.-F.); (V.G.)
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340
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Preface: Endoplasmic reticulum in health and disease. INTERNATIONAL REVIEW OF CELL AND MOLECULAR BIOLOGY 2020; 350:xiii-xvii. [PMID: 32138905 DOI: 10.1016/s1937-6448(20)30020-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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341
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Wang C, Wang P, Liu JC, Zhao ZA, Guo R, Li Y, Liu YS, Li SG, Zhao ZG. Interaction of Estradiol and Endoplasmic Reticulum Stress in the Development of Esophageal Carcinoma. Front Endocrinol (Lausanne) 2020; 11:410. [PMID: 32793111 PMCID: PMC7387645 DOI: 10.3389/fendo.2020.00410] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/20/2020] [Accepted: 05/22/2020] [Indexed: 12/13/2022] Open
Abstract
Gender differences in esophageal cancer patients indicate that estradiol may have antitumor effects on esophageal cancer. The initiation of endoplasmic reticulum stress (ERS) can induce apoptosis in esophageal cancer cells. However, it is still unknown whether estradiol inhibits the development of esophageal cancer by activating ERS pathway. In this study, the gender difference in the development of esophageal cancer was observed by analyzing clinical data and the experimental tumor xenografts in mice. Meanwhile, we investigated the mechanism of ERS in estradiol-mediated inhibition of esophageal cancer using esophageal squamous cell carcinoma cell line EC109. The proportion of male patients with esophageal cancer was significantly higher than female patients. Meanwhile, male patients were prone to have adventitial invasion. The weight of transplanted tumors in female mice was significantly smaller than that in male mice. In vitro experiments showed estradiol inhibits the viability and migration of EC109 cells by increasing the expression of ERS-related proteins, whereas ERS inhibitor 4-PBA abolished the effects of estradiol. In conclusion, our data demonstrate that sex difference exists in the occurrence of esophageal cancer. Estradiol can inhibit the viability and migration of esophageal cancer cells through the activation of ERS, providing a novel insight for esophageal cancer development, treatment, and prevention.
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Affiliation(s)
- Chen Wang
- Institute of Microcirculation, Hebei North University, Zhangjiakou, China
| | - Peng Wang
- Institute of Microcirculation, Hebei North University, Zhangjiakou, China
| | - Jun-Chao Liu
- Institute of Microcirculation, Hebei North University, Zhangjiakou, China
- First Affiliated Hospital, Hebei North University, Zhangjiakou, China
| | - Zhen-Ao Zhao
- Institute of Microcirculation, Hebei North University, Zhangjiakou, China
| | - Rui Guo
- Institute of Microcirculation, Hebei North University, Zhangjiakou, China
| | - Ying Li
- Institute of Microcirculation, Hebei North University, Zhangjiakou, China
| | - Ya-Sen Liu
- Institute of Microcirculation, Hebei North University, Zhangjiakou, China
| | - Shu-Guang Li
- Institute of Microcirculation, Hebei North University, Zhangjiakou, China
- First Affiliated Hospital, Hebei North University, Zhangjiakou, China
- Shu-Guang Li
| | - Zi-Gang Zhao
- Institute of Microcirculation, Hebei North University, Zhangjiakou, China
- *Correspondence: Zi-Gang Zhao
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342
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Yang S, Zhu J, Zhou X, Wang H, Li X, Zhao A. Induction of the unfolded protein response (UPR) during pseudorabies virus infection. Vet Microbiol 2019; 239:108485. [DOI: 10.1016/j.vetmic.2019.108485] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2019] [Revised: 10/25/2019] [Accepted: 10/25/2019] [Indexed: 01/17/2023]
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343
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Branca JJV, Maresca M, Morucci G, Mello T, Becatti M, Pazzagli L, Colzi I, Gonnelli C, Carrino D, Paternostro F, Nicoletti C, Ghelardini C, Gulisano M, Di Cesare Mannelli L, Pacini A. Effects of Cadmium on ZO-1 Tight Junction Integrity of the Blood Brain Barrier. Int J Mol Sci 2019; 20:E6010. [PMID: 31795317 PMCID: PMC6928912 DOI: 10.3390/ijms20236010] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2019] [Revised: 11/21/2019] [Accepted: 11/26/2019] [Indexed: 02/06/2023] Open
Abstract
Cadmium (Cd) is a highly toxic environmental pollutant released from the smelting and refining of metals and cigarette smoking. Oral exposure to cadmium may result in adverse effects on a number of tissues, including the central nervous system (CNS). In fact, its toxicity has been related to neurological disorders, as well as neurodegenerative diseases such as Alzheimer's and Parkinson's diseases. Under normal conditions, Cd barely reaches the brain in adults because of the presence of the blood-brain barrier (BBB); however, it has been demonstrated that Cd-dependent BBB alteration contributes to pathogenesis of neurodegeneration. However, the mechanism underlying Cd-dependent BBB alteration remain obscure. Here, we investigated the signaling pathway of Cd-induced tight junction (TJ), F-actin, and vimentin protein disassembly in a rat brain endothelial cell line (RBE4). RBE4 cells treated with 10 μM cadmium chloride (CdCl2) showed a dose- and time-dependent significant increase in reactive oxygen species (ROS) production. This phenomenon was coincident with the alteration of the TJ zonula occludens-1 (ZO-1), F-actin, and vimentin proteins. The Cd-dependent ROS increase elicited the upregulation of GRP78 expression levels, a chaperone involved in endoplasmic reticulum (ER) stress that induces caspase-3 activation. Further signal profiling by the pannexin-1 (PANX1) specific inhibitor 10Panx revealed a PANX1-independent increase in ATP spillage in Cd-treated endothelial cells. Our results point out that a ROS-dependent ER stress-mediated signaling pathway involving caspase-3 activation and ATP release is behind the BBB morphological alterations induced by Cd.
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Affiliation(s)
- Jacopo Junio Valerio Branca
- Department of Experimental and Clinical Medicine, Anatomy and Histology Section, University of Florence, 50134 Florence, Italy; (G.M.); (D.C.); (F.P.); (C.N.); (M.G.)
| | - Mario Maresca
- Department of Neuroscience, Psychology, Drug Research and Child Health (NEUROFARBA), Pharmacology and Toxicology Section, University of Florence, 50139 Florence, Italy; (M.M.); (C.G.); (L.D.C.M.)
| | - Gabriele Morucci
- Department of Experimental and Clinical Medicine, Anatomy and Histology Section, University of Florence, 50134 Florence, Italy; (G.M.); (D.C.); (F.P.); (C.N.); (M.G.)
| | - Tommaso Mello
- Department of Experimental and Clinical Biomedical Sciences “Mario Serio”, University of Florence, 50134 Florence, Italy; (T.M.); (M.B.); (L.P.)
| | - Matteo Becatti
- Department of Experimental and Clinical Biomedical Sciences “Mario Serio”, University of Florence, 50134 Florence, Italy; (T.M.); (M.B.); (L.P.)
| | - Luigia Pazzagli
- Department of Experimental and Clinical Biomedical Sciences “Mario Serio”, University of Florence, 50134 Florence, Italy; (T.M.); (M.B.); (L.P.)
| | - Ilaria Colzi
- Department of Biology, Plant Ecology and Physiology Laboratory, University of Florence, 50121 Florence, Italy; (I.C.); (C.G.)
| | - Cristina Gonnelli
- Department of Biology, Plant Ecology and Physiology Laboratory, University of Florence, 50121 Florence, Italy; (I.C.); (C.G.)
| | - Donatello Carrino
- Department of Experimental and Clinical Medicine, Anatomy and Histology Section, University of Florence, 50134 Florence, Italy; (G.M.); (D.C.); (F.P.); (C.N.); (M.G.)
| | - Ferdinando Paternostro
- Department of Experimental and Clinical Medicine, Anatomy and Histology Section, University of Florence, 50134 Florence, Italy; (G.M.); (D.C.); (F.P.); (C.N.); (M.G.)
| | - Claudio Nicoletti
- Department of Experimental and Clinical Medicine, Anatomy and Histology Section, University of Florence, 50134 Florence, Italy; (G.M.); (D.C.); (F.P.); (C.N.); (M.G.)
| | - Carla Ghelardini
- Department of Neuroscience, Psychology, Drug Research and Child Health (NEUROFARBA), Pharmacology and Toxicology Section, University of Florence, 50139 Florence, Italy; (M.M.); (C.G.); (L.D.C.M.)
| | - Massimo Gulisano
- Department of Experimental and Clinical Medicine, Anatomy and Histology Section, University of Florence, 50134 Florence, Italy; (G.M.); (D.C.); (F.P.); (C.N.); (M.G.)
| | - Lorenzo Di Cesare Mannelli
- Department of Neuroscience, Psychology, Drug Research and Child Health (NEUROFARBA), Pharmacology and Toxicology Section, University of Florence, 50139 Florence, Italy; (M.M.); (C.G.); (L.D.C.M.)
| | - Alessandra Pacini
- Department of Experimental and Clinical Medicine, Anatomy and Histology Section, University of Florence, 50134 Florence, Italy; (G.M.); (D.C.); (F.P.); (C.N.); (M.G.)
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Iglesia RP, Fernandes CFDL, Coelho BP, Prado MB, Melo Escobar MI, Almeida GHDR, Lopes MH. Heat Shock Proteins in Glioblastoma Biology: Where Do We Stand? Int J Mol Sci 2019; 20:E5794. [PMID: 31752169 PMCID: PMC6888131 DOI: 10.3390/ijms20225794] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Revised: 11/15/2019] [Accepted: 11/16/2019] [Indexed: 12/16/2022] Open
Abstract
Heat shock proteins (HSPs) are evolutionary conserved proteins that work as molecular chaperones and perform broad and crucial roles in proteostasis, an important process to preserve the integrity of proteins in different cell types, in health and disease. Their function in cancer is an important aspect to be considered for a better understanding of disease development and progression. Glioblastoma (GBM) is the most frequent and lethal brain cancer, with no effective therapies. In recent years, HSPs have been considered as possible targets for GBM therapy due their importance in different mechanisms that govern GBM malignance. In this review, we address current evidence on the role of several HSPs in the biology of GBMs, and how these molecules have been considered in different treatments in the context of this disease, including their activities in glioblastoma stem-like cells (GSCs), a small subpopulation able to drive GBM growth. Additionally, we highlight recent works that approach other classes of chaperones, such as histone and mitochondrial chaperones, as important molecules for GBM aggressiveness. Herein, we provide new insights into how HSPs and their partners play pivotal roles in GBM biology and may open new therapeutic avenues for GBM based on proteostasis machinery.
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Affiliation(s)
| | | | | | | | | | | | - Marilene Hohmuth Lopes
- Department of Cell and Developmental Biology, Institute of Biomedical Sciences, University of Sao Paulo, Sao Paulo 05508-000, Brazil; (R.P.I.); (C.F.d.L.F.); (B.P.C.); (M.B.P.); (M.I.M.E.); (G.H.D.R.A.)
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345
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Cell Surface GRP78 as a Death Receptor and an Anticancer Drug Target. Cancers (Basel) 2019; 11:cancers11111787. [PMID: 31766302 PMCID: PMC6896222 DOI: 10.3390/cancers11111787] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Revised: 10/31/2019] [Accepted: 11/08/2019] [Indexed: 12/16/2022] Open
Abstract
Cell surface GRP78 (csGRP78, glucose-regulated protein 78 kDa) is preferentially overexpressed in aggressive, metastatic, and chemo-resistant cancers. GRP78 is best studied as a chaperone protein in the lumen of endoplasmic reticulum (ER), facilitating folding and secretion of the newly synthesized proteins and regulating protein degradation as an ER stress sensor in the unfolded protein pathway. As a cell surface signal receptor, multiple csGRP78 ligands have been discovered to date, and they trigger various downstream cell signaling pathways including pro-proliferative, pro-survival, and pro-apoptotic pathways. In this perspective, we evaluate csGRP78 as a cell surface death receptor and its prospect as an anticancer drug target. The pro-apoptotic ligands of csGRP78 discovered so far include natural proteins, monoclonal antibodies, and synthetic peptides. Even the secreted GRP78 itself was recently found to function as a pro-apoptotic ligand for csGRP78, mediating pancreatic β-cell death. As csGRP78 is found to mainly configur as an external peripheral protein on cancer cell surface, how it can transmit death signals to the cytoplasmic environment remains enigmatic. With the recent encouraging results from the natural csGRP78 targeting pro-apoptotic monoclonal antibody PAT-SM6 in early-stage cancer clinical trials, the potential to develop a novel class of anticancer therapeutics targeting csGRP78 is becoming more compelling.
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Branca JJV, Morucci G, Becatti M, Carrino D, Ghelardini C, Gulisano M, Di Cesare Mannelli L, Pacini A. Cannabidiol Protects Dopaminergic Neuronal Cells from Cadmium. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2019; 16:ijerph16224420. [PMID: 31718076 PMCID: PMC6888634 DOI: 10.3390/ijerph16224420] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Revised: 11/01/2019] [Accepted: 11/05/2019] [Indexed: 12/17/2022]
Abstract
The protective effect of cannabidiol (CBD), the non-psychoactive component of Cannabis sativa, against neuronal toxicity induced by cadmium chloride (CdCl2 10 μM) was investigated in a retinoic acid (RA)-differentiated SH-SY5Y neuroblastoma cell line. CBD (1 μM) was applied 24 h before and removed during cadmium (Cd) treatment. In differentiated neuronal cells, CBD significantly reduced the Cd-dependent decrease of cell viability, and the rapid reactive oxygen species (ROS) increase. CBD significantly prevented the endoplasmic reticulum (ER) stress (GRP78 increase) and the subcellular distribution of the cytochrome C, as well as the overexpression of the pro-apoptotic protein BAX. Immunocytochemical analysis as well as quantitative protein evaluation by western blotting revealed that CBD partially counteracted the depletion of the growth associated protein 43 (GAP43) and of the neuronal specific class III β-tubulin (β3 tubulin) induced by Cd treatment. These data showed that Cd-induced neuronal injury was ameliorated by CBD treatment and it was concluded that CBD may represent a potential option to protect neuronal cells from the detrimental effects of Cd toxicity.
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Affiliation(s)
- Jacopo Junio Valerio Branca
- Department of Experimental and Clinical Medicine, Histology and Anatomy Section, University of Firenze, 50134 Firenze, Italy; (D.C.); (M.G.); (A.P.)
- Correspondence: (J.J.V.B.); (G.M.); Tel.: +39-055-2758067 (J.J.V.B.)
| | - Gabriele Morucci
- Department of Experimental and Clinical Medicine, Histology and Anatomy Section, University of Firenze, 50134 Firenze, Italy; (D.C.); (M.G.); (A.P.)
- Correspondence: (J.J.V.B.); (G.M.); Tel.: +39-055-2758067 (J.J.V.B.)
| | - Matteo Becatti
- Department of Experimental and Clinical Biomedical Sciences “Mario Serio”, University of Firenze, 50134 Firenze, Italy;
| | - Donatello Carrino
- Department of Experimental and Clinical Medicine, Histology and Anatomy Section, University of Firenze, 50134 Firenze, Italy; (D.C.); (M.G.); (A.P.)
| | - Carla Ghelardini
- Department of Neuroscience, Psychology, Drug Research and Child Health (NEUROFARBA), Pharmacology and Toxicology Section, University of Firenze, 50139 Firenze, Italy; (C.G.); (L.D.C.M.)
| | - Massimo Gulisano
- Department of Experimental and Clinical Medicine, Histology and Anatomy Section, University of Firenze, 50134 Firenze, Italy; (D.C.); (M.G.); (A.P.)
| | - Lorenzo Di Cesare Mannelli
- Department of Neuroscience, Psychology, Drug Research and Child Health (NEUROFARBA), Pharmacology and Toxicology Section, University of Firenze, 50139 Firenze, Italy; (C.G.); (L.D.C.M.)
| | - Alessandra Pacini
- Department of Experimental and Clinical Medicine, Histology and Anatomy Section, University of Firenze, 50134 Firenze, Italy; (D.C.); (M.G.); (A.P.)
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Utsunomiya A, Chino T, Utsunomiya N, Luong VH, Tokuriki A, Naganuma T, Arita M, Higashi K, Saito K, Suzuki N, Ohara A, Sugai M, Sugawara K, Tsuruta D, Oyama N, Hasegawa M. Homeostatic Function of Dermokine in the Skin Barrier and Inflammation. J Invest Dermatol 2019; 140:838-849.e9. [PMID: 31669414 DOI: 10.1016/j.jid.2019.09.011] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Revised: 09/06/2019] [Accepted: 09/23/2019] [Indexed: 10/25/2022]
Abstract
Dermokine is a chiefly skin-specific secreted glycoprotein localized in the upper epidermis, and its family consists of three splice variants in mice and five in humans. To investigate the pathophysiological impact of dermokine, we generated mice deficient for two (βγ) or all dermokine isoforms (αβγ). Both variants, especially dermokine αβγ-deficient mice exhibited scale and wrinkle formation resembling ichthyosis accompanied by transepidermal water imbalance at the neonatal stage. Several dermokine αβγ-deficient mice died by postnatal day 21 when reared under low humidity. Moreover, the cornified envelope was vulnerable, and skin barrier lipid ceramides were reduced in the epidermis of dermokine αβγ-deficient mice. cDNA microarray and quantitative reverse transcriptase-PCR assays of the epidermis revealed the upregulation of small proline-rich protein and late cornified envelope family members, as well as antimicrobial peptides in the dermokine αβγ-deficient mice. These barrier gene signatures were similar to that seen in psoriasis, whereas recent studies demonstrated that congenital ichthyosis has gene profiles resembling psoriasis. In line with these findings, adult dermokine αβγ-deficient mice exhibited aggravated phenotypes in psoriasis-like dermatitis models but not in allergic dermatitis models. Dermokine may play a regulatory role in inflammatory dyskeratotic diseases, such as congenital ichthyosis and psoriasis, in the crosstalk between barrier dysfunction and inflammation.
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Affiliation(s)
- Akira Utsunomiya
- Department of Dermatology, Division of Medicine, Faculty of Medical Sciences, University of Fukui, Fukui, Japan
| | - Takenao Chino
- Department of Dermatology, Division of Medicine, Faculty of Medical Sciences, University of Fukui, Fukui, Japan
| | - Natsuko Utsunomiya
- Department of Dermatology, Division of Medicine, Faculty of Medical Sciences, University of Fukui, Fukui, Japan
| | - Vu Huy Luong
- Department of Dermatology, Division of Medicine, Faculty of Medical Sciences, University of Fukui, Fukui, Japan
| | - Atsushi Tokuriki
- Department of Dermatology, Division of Medicine, Faculty of Medical Sciences, University of Fukui, Fukui, Japan
| | - Tatsuro Naganuma
- Division of Physiological Chemistry and Metabolism, Keio University Faculty of Pharmacy, Tokyo, Japan; Laboratory for Metabolomics, RIKEN Center for Integrative Medical Sciences, Yokohama, Japan
| | - Makoto Arita
- Division of Physiological Chemistry and Metabolism, Keio University Faculty of Pharmacy, Tokyo, Japan; Laboratory for Metabolomics, RIKEN Center for Integrative Medical Sciences, Yokohama, Japan
| | - Kiyoshi Higashi
- Sumitomo Chemical Co., Ltd. Cell Science Group Environmental Health Science Laboratory, Osaka, Japan
| | - Koichi Saito
- Sumitomo Chemical Co., Ltd. Cell Science Group Environmental Health Science Laboratory, Osaka, Japan
| | - Noriyuki Suzuki
- Sumitomo Chemical Co., Ltd. Cell Science Group Environmental Health Science Laboratory, Osaka, Japan
| | - Ayako Ohara
- Sumitomo Chemical Co., Ltd. Cell Science Group Environmental Health Science Laboratory, Osaka, Japan
| | - Manabu Sugai
- Division of Molecular Genetics, Department of Biochemistry and Bioinformative Sciences, School of Medicine, Faculty of Medical Sciences, University of Fukui, Fukui, Japan
| | - Koji Sugawara
- Department of Dermatology, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Daisuke Tsuruta
- Department of Dermatology, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Noritaka Oyama
- Department of Dermatology, Division of Medicine, Faculty of Medical Sciences, University of Fukui, Fukui, Japan
| | - Minoru Hasegawa
- Department of Dermatology, Division of Medicine, Faculty of Medical Sciences, University of Fukui, Fukui, Japan.
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348
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Mori H, Saito YU, Iwahashi S, Ikemoto T, Imura S, Morine Y, Shimada M. Impact of Bevacizumab on Liver Damage After Massive Hepatectomy in Rats. In Vivo 2019; 33:1469-1476. [PMID: 31471394 DOI: 10.21873/invivo.11626] [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: 06/10/2019] [Revised: 07/08/2019] [Accepted: 07/12/2019] [Indexed: 11/10/2022]
Abstract
BACKGROUND The aim of this study was to evaluate the impact of pretreatment with bevacizumab on liver damage in a rat model of massive hepatectomy (Hx) model, as a surrogate model of massive Hx for liver metastasis from colorectal cancer. MATERIALS AND METHODS Male Wister rats (n=24) were separated into the following two groups: 90% Hx and 90% Hx plus bevacizumab group. Bevacizumab (5 mg/kg) was injected intraperitoneally 7 days before Hx. Samples of blood and remnant liver tissue were obtained 24 hours after hepatectomy and the following parameters were evaluated: Biochemical analysis; liver regeneration rate; survival rate; and real-time polymerase chain reaction for interleukin-1 beta (Il1b), tumor necrosis factor alpha (Tnfa), matrix metalloproteinase (Mmp) 2 and Mmp9 mRNA. In addition, samples of whole liver tissue were obtained immediately before Hx and real-time polymerase chain reaction was performed for X-box binding protein 1 (Xbp1), activating transcription factor 6 (Atf6), C/EBP homologous protein (Chop), glucose-regulated protein 78 (Grp78) and heat-shock protein 70 (Hsp70), as markers of endoplasmic reticulum stress response. RESULTS The levels of transaminases 24 hours after Hx were significantly reduced in the group pretreated with bevacizumab compared to that not pretreated (p<0.05). The liver regeneration rate at 24 hours after Hx was significantly increased in the group pretreated with bevacizumab compared with the group which underwent Hx alone (p<0.05). The survival rate for the group pretreated with bevacizumab tended to be higher than that of the Hx-only group, 72 hours after Hx (p=0.09). The expressions of Il1b, Mmp2 and Mmp9 mRNA 24 hours after Hx in the group pretreated with bevacizumab tended to be lower than that of rats which underwent Hx alone (p=0.11, 0.09 and 0.15, respectively). The expression of Xbp1, Chop, Grp78 and Hsp70 mRNA immediately before Hx in the group pretreated with bevacizumab were significantly higher than the 90% Hx group (p<0.05). CONCLUSION Bevacizumab pretreatment had protective effects on liver injury after massive hepatectomy in rats, apparently via the induction of the endoplasmic reticulum stress response, i.e. the so-called unfolded protein response.
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Affiliation(s)
- Hiroki Mori
- Department of Surgery, The University of Tokushima, Tokushima, Japan
| | - Y U Saito
- Department of Surgery, The University of Tokushima, Tokushima, Japan
| | - Shuichi Iwahashi
- Department of Surgery, The University of Tokushima, Tokushima, Japan
| | - Tetsuya Ikemoto
- Department of Surgery, The University of Tokushima, Tokushima, Japan
| | - Satoru Imura
- Department of Surgery, The University of Tokushima, Tokushima, Japan
| | - Yuji Morine
- Department of Surgery, The University of Tokushima, Tokushima, Japan
| | - Mitsuo Shimada
- Department of Surgery, The University of Tokushima, Tokushima, Japan
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349
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Zhu W, Niu X, Wang M, Li Z, Jiang HK, Li C, Caton SJ, Bai Y. Endoplasmic reticulum stress may be involved in insulin resistance and lipid metabolism disorders of the white adipose tissues induced by high-fat diet containing industrial trans-fatty acids. Diabetes Metab Syndr Obes 2019; 12:1625-1638. [PMID: 31507325 PMCID: PMC6718956 DOI: 10.2147/dmso.s218336] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/04/2019] [Accepted: 08/17/2019] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND Consumption of industrially produced trans-fatty acids (iTFAs) can result in alteration to lipid profile and glucose metabolism. Moreover, a diet high in iTFAs could increase the risk of obesity, cardiovascular diseases (CVDs) and type 2 diabetes mellitus. Glucose and lipid metabolism are closely linked in white adipose tissue (WAT), yet the underlying mechanisms of the effect of iTFAs in WAT are poorly understood. MATERIALS AND METHODS Parameters of glucose homeostasis, lipid profiles and markers of endoplasmic reticulum (ER) stress of WAT were measured in rats maintained on a high-fat diet containing margarine (HFD-M) (n=10) compared to controls maintained on standard chow (n=10) over 16 weeks. RESULTS Fat mass and body weight was significantly increased in rats maintained on the HFD-M compared to controls (P<0.01). HFD-M rats had increased levels of insulin (INS), homeostasis model assessment of insulin resistance and serum lipid profile was significantly altered. The expression of glucose-regulated protein 78 (GRP78) and the phosphorylation of inositol-requiring enzyme 1-alpha and c-Jun N-terminal kinase (JNK) were significantly increased in subcutaneous and retroperitoneal adipose depots of HFD-M-fed rats. In vitro, wider ER lumens were observed in 100μmol/L elaidic acid (EA)-treated human mature adipocytes. We observed activation of ER stress markers, impaired INS receptor signaling and increased lipogenesis in adipocytes after EA exposure. These effects could be alleviated by inhibiting ER stress in adipocytes in vitro. CONCLUSION Collectively these data suggest that ER stress may be involved in INS resistance and lipid metabolism disorders induced by high-fat diet containing iTFAs. These findings suggest that WAT could be regarded as a key target organ for inhibiting ER stress to reverse the impaired INS receptor signaling, alleviate lipid metabolism disorders, and provide a novel approach to prevent and treat INS resistance and dyslipidemia-related chronic diseases such as T2MD and CVDs.
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Affiliation(s)
- Wanqiu Zhu
- Department of Maternal and Child Health, School of Public Health, China Medical University, Shenyang, Liaoning, People’s Republic of China
| | - Xin Niu
- Department of Maternal and Child Health, School of Public Health, China Medical University, Shenyang, Liaoning, People’s Republic of China
| | - Mingxia Wang
- Department of Maternal and Child Health, School of Public Health, China Medical University, Shenyang, Liaoning, People’s Republic of China
| | - Zhao Li
- Department of Cardiology, The First Hospital of China Medical University, Shenyang, Liaoning, People’s Republic of China
| | - Hong-Kun Jiang
- Department of Pediatrics, The First Hospital of China Medical University, Shenyang, Liaoning, People’s Republic of China
| | - Chuntao Li
- Information Center, the First Hospital of China Medical University, Shenyang, Liaoning, People’s Republic of China
| | - Samantha J Caton
- School of Health and Related Research (ScHARR), Public Health, University of Sheffield, Sheffield, S1 4DA, UK
| | - Yinglong Bai
- Department of Maternal and Child Health, School of Public Health, China Medical University, Shenyang, Liaoning, People’s Republic of China
- Correspondence: Yinglong Bai Department of Maternal and Child Health, School of Public Health, China Medical University, No.77 Puhe Road, Shenyang North New Area, Shenyang110122, Liaoning, People’s Republic of ChinaTel+86 243 193 9406Fax +86 243 193 9406Email
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