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Virdis P, Migheli R, Bordoni V, Fiorentino FP, Sanna L, Marchesi I, Pintore G, Galleri G, Muroni MR, Bagella L, Fozza C, De Miglio MR, Podda L. Clarifying the molecular mechanism of tomentosin‑induced antiproliferative and proapoptotic effects in human multiple myeloma via gene expression profile and genetic interaction network analysis. Int J Mol Med 2021; 48:213. [PMID: 34643251 PMCID: PMC8522960 DOI: 10.3892/ijmm.2021.5046] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Accepted: 09/02/2021] [Indexed: 12/29/2022] Open
Abstract
Multiple myeloma (MM) is an aggressive B cell malignancy. Substantial progress has been made in the therapeutic context for patients with MM, however it still represents an incurable disease due to drug resistance and recurrence. Development of more effective or synergistic therapeutic approaches undoubtedly represents an unmet clinical need. Tomentosin is a bioactive natural sesquiterpene lactone extracted by various plants with therapeutic properties, including anti-neoplastic effects. In the present study, the potential antitumor activity of tomentosin was evaluated on the human RPMI-8226 cell line, treated with increasing tomentosin concentration for cytotoxicity screening. The data suggested that both cell cycle arrest and cell apoptosis could explain the antiproliferative effects of tomentosin and may result in the inhibition of RPMI-8226 cell viability. To assess differentially expressed genes contributing to tomentosin activity and identify its mechanism of action, a microarray gene expression profile was performed, identifying 126 genes deregulated by tomentosin. To address the systems biology and identify how tomentosin deregulates gene expression in MM from a systems perspective, all deregulated genes were submitted to enrichment and molecular network analysis. The Protein-Protein Interaction (PPI) network analysis showed that tomentosin in human MM induced the downregulation of genes involved in several pathways known to lead immune-system processes, such as cytokine-cytokine receptor interaction, chemokine or NF-κB signaling pathway, as well as genes involved in pathways playing a central role in cellular neoplastic processes, such as growth, proliferation, migration, invasion and apoptosis. Tomentosin also induced endoplasmic reticulum stress via upregulation of cyclic AMP-dependent transcription factor ATF-4 and DNA damage-inducible transcript 3 protein genes, suggesting that in the presence of tomentosin the protective unfolded protein response signaling may induce cell apoptosis. The functional connections analysis executed using the Connectivity Map tool, suggested that the effects of tomentosin on RPMI-8226 cells might be similar to those exerted by heat shock proteins inhibitors. Taken together, these data suggested that tomentosin may be a potential drug candidate for the treatment of MM.
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Affiliation(s)
- Patrizia Virdis
- Department of Medical, Surgical and Experimental Sciences, University of Sassari, I‑07100 Sassari, Sardinia, Italy
| | - Rossana Migheli
- Department of Medical, Surgical and Experimental Sciences, University of Sassari, I‑07100 Sassari, Sardinia, Italy
| | - Valentina Bordoni
- Department of Biomedical Sciences, University of Sassari, I‑07100 Sassari, Sardinia, Italy
| | | | - Luca Sanna
- Department of Medical, Surgical and Experimental Sciences, University of Sassari, I‑07100 Sassari, Sardinia, Italy
| | - Irene Marchesi
- Kitos Biotech Srls, Porto Conte Ricerche, I‑07100 Sassari, Sardinia, Italy
| | - Giorgio Pintore
- Department of Chemistry and Pharmacy, University of Sassari, I‑07100 Sassari, Sardinia, Italy
| | - Grazia Galleri
- Department of Medical, Surgical and Experimental Sciences, University of Sassari, I‑07100 Sassari, Sardinia, Italy
| | - Maria Rosaria Muroni
- Department of Medical, Surgical and Experimental Sciences, University of Sassari, I‑07100 Sassari, Sardinia, Italy
| | - Luigi Bagella
- Department of Biomedical Sciences, University of Sassari, I‑07100 Sassari, Sardinia, Italy
| | - Claudio Fozza
- Department of Medical, Surgical and Experimental Sciences, University of Sassari, I‑07100 Sassari, Sardinia, Italy
| | - Maria Rosaria De Miglio
- Department of Medical, Surgical and Experimental Sciences, University of Sassari, I‑07100 Sassari, Sardinia, Italy
| | - Luigi Podda
- Department of Medical, Surgical and Experimental Sciences, University of Sassari, I‑07100 Sassari, Sardinia, Italy
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Elkhatib SK, Alley J, Jepsen M, Smeins L, Barnes A, Naik S, Ackermann MR, Verhoeven D, Kohut ML. Exercise duration modulates upper and lower respiratory fluid cellularity, antiviral activity, and lung gene expression. Physiol Rep 2021; 9:e15075. [PMID: 34676696 PMCID: PMC8531599 DOI: 10.14814/phy2.15075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2021] [Accepted: 09/18/2021] [Indexed: 12/02/2022] Open
Abstract
Exercise has substantial health benefits, but the effects of exercise on immune status and susceptibility to respiratory infections are less clear. Furthermore, there is limited research examining the effects of prolonged exercise on local respiratory immunity and antiviral activity. To assess the upper respiratory tract in response to exercise, we collected nasal lavage fluid (NALF) from human subjects (1) at rest, (2) after 45 min of moderate-intensity exercise, and (3) after 180 min of moderate-intensity exercise. To assess immune responses of the lower respiratory tract, we utilized a murine model to examine the effect of exercise duration on bronchoalveolar lavage (BAL) fluid immune cell content and lung gene expression. NALF cell counts did not change after 45 min of exercise, whereas 180 min significantly increased total cells and leukocytes in NALF. Importantly, fold change in NALF leukocytes correlated with the post-exercise fatigue rating in the 180-min exercise condition. The acellular portion of NALF contained strong antiviral activity against Influenza A in both resting and exercise paradigms. In mice undergoing moderate-intensity exercise, BAL total cells and neutrophils decreased in response to 45 or 90 min of exercise. In lung lobes, increased expression of heat shock proteins suggested that cellular stress occurred in response to exercise. However, a broad upregulation of inflammatory genes was not observed, even at 180 min of exercise. This work demonstrates that exercise duration differentially alters the cellularity of respiratory tract fluids, antiviral activity, and gene expression. These changes in local mucosal immunity may influence resistance to respiratory viruses, including influenza or possibly other pathogens in which nasal mucosa plays a protective role, such as rhinovirus or SARS-CoV-2.
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Affiliation(s)
- Safwan K. Elkhatib
- Department of KinesiologyIowa State UniversityAmesIowaUSA
- Present address:
Cellular & Integrative PhysiologyCollege of MedicineUniversity of Nebraska Medical CenterOmahaNebraskaUSA
| | - Jessica Alley
- Department of KinesiologyIowa State UniversityAmesIowaUSA
- Program of ImmunobiologyIowa State UniversityAmesIowaUSA
- Present address:
Lineberger Comprehensive Cancer Center, School of MedicineUniversity of North CarolinaChapel HillNorth CarolinaUSA
| | - Michael Jepsen
- Department of KinesiologyIowa State UniversityAmesIowaUSA
- Present address:
College of Osteopathic MedicineCampbell UniversityLillingtonNorth CarolinaUSA
| | - Laurel Smeins
- Department of KinesiologyIowa State UniversityAmesIowaUSA
| | - Andrew Barnes
- Department of KinesiologyIowa State UniversityAmesIowaUSA
- Present address:
Kirksville College of Osteopathic MedicineA.T. Still UniversityKirksvilleMissouriUSA
| | - Shibani Naik
- Program of ImmunobiologyIowa State UniversityAmesIowaUSA
- Present address:
Arisan Therapeutics11189 Sorrento Valley Rd, Suite 104, San DiegoCaliforniaUSA
| | - Mark R. Ackermann
- Department of Veterinary PathologyCollege of Veterinary MedicineIowa State UniversityAmesIowaUSA
- Present address:
Director, Anatomic Veterinary Pathology DiagnosticsZoetisClear LakeIowa50428USA
| | - David Verhoeven
- Department of Veterinary Microbiology and Preventive MedicineCollege of Veterinary MedicineIowa State UniversityAmesIowaUSA
| | - Marian L. Kohut
- Department of KinesiologyIowa State UniversityAmesIowaUSA
- Program of ImmunobiologyIowa State UniversityAmesIowaUSA
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53
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Sarmiento ME, Chin KL, Lau NS, Aziah I, Ismail N, Norazmi MN, Acosta A, Yaacob NS. Comparative transcriptome profiling of horseshoe crab Tachypleus gigas hemocytes in response to lipopolysaccharides. FISH & SHELLFISH IMMUNOLOGY 2021; 117:148-156. [PMID: 34358702 DOI: 10.1016/j.fsi.2021.08.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Revised: 08/01/2021] [Accepted: 08/02/2021] [Indexed: 06/13/2023]
Abstract
Horseshoe crabs (HSCs) are living fossil species of marine arthropods with a long evolutionary history spanning approximately 500 million years. Their survival is helped by their innate immune system that comprises cellular and humoral immune components to protect them against invading pathogens. To help understand the genetic mechanisms involved, the present study utilised the Illumina HiSeq platform to perform transcriptomic analysis of hemocytes from the HSC, Tachypleus gigas, that were challenged with lipopolysaccharides (LPS). The high-throughput sequencing resulted in 352,077,208 and 386,749,136 raw reads corresponding to 282,490,910 and 305,709,830 high-quality mappable reads for the control and LPS-treated hemocyte samples, respectively. Based on the log-fold change of > 0.3 or < -0.3, 1338 genes were significantly upregulated and 215 genes were significantly downregulated following LPS stimulation. The differentially expressed genes (DEGs) were further identified to be associated with multiple pathways such as those related to immune defence, stress response, cytoskeleton function and signal transduction. This study provides insights into the underlying molecular and regulatory mechanisms in hemocytes exposed to LPS, which has relevance for the study of the immune response of HSCs to infection.
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Affiliation(s)
- Maria E Sarmiento
- School of Health Sciences, Universiti Sains Malaysia, Health Campus, Kubang Kerian, Kelantan, Malaysia
| | - Kai Ling Chin
- Faculty of Medicine and Health Sciences, Universiti Malaysia Sabah, Kota Kinabalu, Sabah, Malaysia
| | - Nyok Sean Lau
- Centre for Chemical Biology, Universiti Sains Malaysia, Bayan Lepas, Pulau Pinang, Malaysia
| | - Ismail Aziah
- Institute for Research in Molecular Medicine, Universiti Sains Malaysia, Health Campus, Kubang Kerian, Kelantan, Malaysia
| | - Noraznawati Ismail
- Institute of Marine Biotechnology, Universiti Malaysia Terengganu, Kuala Nerus, Terengganu, Malaysia
| | - Mohd Nor Norazmi
- School of Health Sciences, Universiti Sains Malaysia, Health Campus, Kubang Kerian, Kelantan, Malaysia
| | - Armando Acosta
- School of Health Sciences, Universiti Sains Malaysia, Health Campus, Kubang Kerian, Kelantan, Malaysia
| | - Nik Soriani Yaacob
- Department of Chemical Pathology, School of Medical Sciences, Universiti Sains Malaysia, Health Campus, Kubang Kerian, Kelantan, Malaysia.
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Lu H, Zhao H, Wang Y, Guo M, Mu M, Liu Y, Nie X, Huang P, Xing M. Arsenic (III) induces oxidative stress and inflammation in the gills of common carp, which is ameliorated by zinc (II). J Inorg Biochem 2021; 225:111617. [PMID: 34571403 DOI: 10.1016/j.jinorgbio.2021.111617] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Revised: 09/09/2021] [Accepted: 09/16/2021] [Indexed: 12/13/2022]
Abstract
Arsenic (As) is widely present in the environment in form of arsenite (AsIII) and arsenate (AsV). Oxidative stress and inflammation are believed to be the dominant mechanisms of AsIII toxicity in vivo and in vitro. The aim of this study was to investigate whether zinc (Zn2+) alleviates exogenous gill toxicity in carp induced by AsIII and to gain insight into the underlying mechanisms. Exposure of carp to 2.83 mg As2O3/L for 30 days reduced superoxide dismutase activity by 4.0%, catalase by 41.0% and glutathione by 19.8%, while the concentration of malondialdehyde was increased by 16.4% compared to the control group, indicating oxidative stress. After the exposure of carp to AsIII the expression of inflammatory markers, such as interleukin-6, interleukin-8, tumor necrosis factor α and inducible nitric oxide synthase in gill tissue were significantly increased. In addition, the phosphorylation of nuclear factor kappa-B (NF-κB) was increased by 225%. 1 mg ZnCl2/L can relieve the toxicity of AsIII based on histopathology, antioxidase activity, qRT-PCR and western results. Zn2+ attenuated AsIII-induced gill toxicity that suppressed intracellular oxidative stress and NF-κB pathway by an upregulation of metallothionein. Therefore, the toxic effect of AsIII on the gill cells of carp was reduced. This study provides a theoretical basis for exploring the alleviation of the toxic effects of metalloids on organisms by heavy metals and the biological assessment of the effects.
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Affiliation(s)
- Hongmin Lu
- College of wildlife and protected area, Northeast Forestry University, Harbin 150040, Heilongjiang, PR China
| | - Hongjing Zhao
- College of wildlife and protected area, Northeast Forestry University, Harbin 150040, Heilongjiang, PR China
| | - Yu Wang
- College of wildlife and protected area, Northeast Forestry University, Harbin 150040, Heilongjiang, PR China
| | - Menghao Guo
- College of wildlife and protected area, Northeast Forestry University, Harbin 150040, Heilongjiang, PR China
| | - Mengyao Mu
- College of wildlife and protected area, Northeast Forestry University, Harbin 150040, Heilongjiang, PR China
| | - Yachen Liu
- College of wildlife and protected area, Northeast Forestry University, Harbin 150040, Heilongjiang, PR China
| | - Xiaopan Nie
- College of wildlife and protected area, Northeast Forestry University, Harbin 150040, Heilongjiang, PR China
| | - Puyi Huang
- College of wildlife and protected area, Northeast Forestry University, Harbin 150040, Heilongjiang, PR China.
| | - Mingwei Xing
- College of wildlife and protected area, Northeast Forestry University, Harbin 150040, Heilongjiang, PR China.
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55
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Li P, Chang M. Roles of PRR-Mediated Signaling Pathways in the Regulation of Oxidative Stress and Inflammatory Diseases. Int J Mol Sci 2021; 22:ijms22147688. [PMID: 34299310 PMCID: PMC8306625 DOI: 10.3390/ijms22147688] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 07/13/2021] [Accepted: 07/15/2021] [Indexed: 12/13/2022] Open
Abstract
Oxidative stress is a major contributor to the pathogenesis of various inflammatory diseases. Accumulating evidence has shown that oxidative stress is characterized by the overproduction of reactive oxygen species (ROS). Previous reviews have highlighted inflammatory signaling pathways, biomarkers, molecular targets, and pathogenetic functions mediated by oxidative stress in various diseases. The inflammatory signaling cascades are initiated through the recognition of host cell-derived damage associated molecular patterns (DAMPs) and microorganism-derived pathogen associated molecular patterns (PAMPs) by pattern recognition receptors (PRRs). In this review, the effects of PRRs from the Toll-like (TLRs), the retinoic acid-induced gene I (RIG-I)-like receptors (RLRs) and the NOD-like (NLRs) families, and the activation of these signaling pathways in regulating the production of ROS and/or oxidative stress are summarized. Furthermore, important directions for future studies, especially for pathogen-induced signaling pathways through oxidative stress are also reviewed. The present review will highlight potential therapeutic strategies relevant to inflammatory diseases based on the correlations between ROS regulation and PRRs-mediated signaling pathways.
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Affiliation(s)
- Pengwei Li
- State Key Laboratory of Freshwater Ecology and Biotechnology, Key Laboratory of Aquaculture Disease Control, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China;
| | - Mingxian Chang
- State Key Laboratory of Freshwater Ecology and Biotechnology, Key Laboratory of Aquaculture Disease Control, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China;
- Innovation Academy for Seed Design, Chinese Academy of Sciences, Wuhan 430072, China
- University of Chinese Academy of Sciences, Beijing 100049, China
- Correspondence: ; Tel.: +86-027-6878-0760
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56
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Ullah M, Qian NPM, Yannarelli G, Akbar A. Heat shock protein 20 promotes sirtuin 1-dependent cell proliferation in induced pluripotent stem cells. World J Stem Cells 2021; 13:659-669. [PMID: 34249234 PMCID: PMC8246253 DOI: 10.4252/wjsc.v13.i6.659] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/12/2021] [Revised: 03/27/2021] [Accepted: 05/27/2021] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Heat shock proteins (HSPs) are molecular chaperones that protect cells against cellular stresses or injury. However, it has been increasingly recognized that they also play crucial roles in regulating fundamental cellular processes. HSP20 has been implicated in cell proliferation, but conflicting studies have shown that it can either promote or suppress proliferation. The underlying mechanisms by which HSP20 regulates cell proliferation and pluripotency remain unexplored. While the effect of HSP20 on cell proliferation has been recognized, its role in inducing pluripotency in human-induced pluripotent stem cells (iPSCs) has not been addressed.
AIM To evaluate the efficacy of HSP20 overexpression in human iPSCs and evaluate the ability to promote cell proliferation. The purpose of this study was to investigate whether overexpression of HSP20 in iPSCs can increase pluripotency and regeneration.
METHODS We used iPSCs, which retain their potential for cell proliferation. HSP20 overexpression effectively enhanced cell proliferation and pluripotency. Overexpression of HSP20 in iPSCs was characterized by immunocytochemistry staining and real-time polymerase chain reaction. We also used cell culture, cell counting, western blotting, and flow cytometry analyses to validate HSP20 overexpression and its mechanism.
RESULTS This study demonstrated that overexpression of HSP20 can increase the pluripotency in iPSCs. Furthermore, by overexpressing HSP20 in iPSCs, we showed that HSP20 upregulated proliferation markers, induced pluripotent genes, and drove cell proliferation in a sirtuin 1 (SIRT1)-dependent manner. These data have practical applications in the field of stem cell-based therapies where the mass expansion of cells is needed to generate large quantities of stem cell-derived cells for transplantation purposes.
CONCLUSION We found that the overexpression of HSP20 enhanced the proliferation of iPSCs in a SIRT1-dependent manner. Herein, we established the distinct crosstalk between HSP20 and SIRT1 in regulating cell proliferation and pluripotency. Our study provides novel insights into the mechanisms controlling cell proliferation that can potentially be exploited to improve the expansion and pluripotency of human iPSCs for cell transplantation therapies. These results suggest that iPSCs overexpressing HSP20 exert regenerative and proliferative effects and may have the potential to improve clinical outcomes.
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Affiliation(s)
- Mujib Ullah
- Institute for Immunity and Transplantation, Stem Cell Biology and Regenerative Medicine, School of Medicine, Stanford University, Stanford, CA 94304, United States
| | - Nicole Pek Min Qian
- Immunology and School of Medicine, Stanford University, Stanford, CA 94304, United States
| | - Gustavo Yannarelli
- Laboratorio de Regulación Génica y Células Madre, Instituto de Medicina Traslacional, Trasplante y Bioingeniería (IMeTTyB), Universidad Favaloro-CONICET, Buenos Aires 1078, Argentina
| | - Asma Akbar
- Institute for Molecular Medicine, School of Medicine, Stanford University, Stanford, CA 94304, United States
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Badry A, Jaspers VLB, Waugh CA. Environmental pollutants modulate RNA and DNA virus-activated miRNA-155 expression and innate immune system responses: Insights into new immunomodulative mechanisms. J Immunotoxicol 2021; 17:86-93. [PMID: 32233818 DOI: 10.1080/1547691x.2020.1740838] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Many persistent organic pollutants, such as polychlorinated biphenyls (PCBs), have high immunomodulating potentials. Exposure to them, in combination with virus infections, has been shown to aggravate outcomes of the infection, leading to increased viral titers and host mortality. Expression of immune-related microRNA (miR) signaling pathways (by host and/or virus) have been shown to be important in determining these outcomes; there is some evidence to suggest pollutants can cause dysregulation of miRNAs. It was thus hypothesized here that modulation of miRNAs (and associated cytokine genes) by pollutants exerts negative effects during viral infections. To test this, an in vitro study on chicken embryo fibroblasts (CEF) exposed to a PCB mixture (Aroclor 1260) and then stimulated with a synthetic RNA virus (poly(I:C)) or infected with a lymphoma-causing DNA virus (Gallid Herpes Virus 2 [GaHV-2]) was conducted. Using quantitative real-time PCR, expression patterns for mir-155, pro-inflammatory TNFα and IL-8, transcription factor NF-κB1, and anti-inflammatory IL-4 were investigated 8, 12, and 18 h after virus activation. The study showed that Aroclor1260 modulated mir-155 expression, such that a down-regulation of mir-155 in poly(I:C)-treated CEF was seen up to 12 h. Aroclor1260 exposure also increased the mRNA expression of pro-inflammatory genes after 8 h in poly(I:C)-treated cells, but levels in GaHV-2-infected cells were unaffected. In contrast to with Aroclor1260/poly(I:C), Aroclor1260/GaHV-2-infected cells displayed an increase in mir-155 levels after 12 h compared to levels seen with either individual treatment. While after 12 h expression of most evaluated genes was down-regulated (independent of treatment regimen), by 18 h, up-regulation was evident again. In conclusion, this study added evidence that mir-155 signaling represents a sensitive pathway to chemically-induced immunomodulation and indicated that PCBs can modulate highly-regulated innate immune system signaling pathways important in determining host immune response outcomes during viral infections.
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Affiliation(s)
- Alexander Badry
- Department of Biology, Norwegian University of Science and Technology, Trondheim, Norway.,Aquatic Ecology, University of Duisburg-Essen, Essen, Germany
| | - Veerle L B Jaspers
- Department of Biology, Norwegian University of Science and Technology, Trondheim, Norway
| | - Courtney A Waugh
- Department of Biology, Norwegian University of Science and Technology, Trondheim, Norway.,Faculty of Biosciences and Aquaculture, Nord University, Steinkjer, Norway
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Mehri F, Rahbar AH, Ghane ET, Souri B, Esfahani M. The comparison of oxidative markers between Covid-19 patients and healthy subjects. Arch Med Res 2021; 52:843-849. [PMID: 34154831 PMCID: PMC8180845 DOI: 10.1016/j.arcmed.2021.06.004] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Revised: 04/21/2021] [Accepted: 06/02/2021] [Indexed: 02/06/2023]
Abstract
Aim and Background Covid-19 has been as an important human infectious disease that has affected several countries. Cytokine storm has major role is Covid-19 pathogenesis. The association between inflammation and oxidative stress is well stablished. In this article, we aim to assess oxidative stress markers in Covid-19 patients compare to the healthy subjects. Method A total of 48 persons (24 with Covid-19 and 24 controls) were evaluated in this research. Serum oxidative stress markers including Malondialdehyde (MDA), total oxidant status (TOS), activity of catalase (CAT) and super oxide dismutase (SOD) were measured alongside routine laboratory tests. Results Patients group were divided into ICU and Non-ICU groups. ESR, CRP and serum level of ferritin were significantly higher in case group. Serum level of albumin was significantly lower in Covid-19 patients. Serum MDA and TOS was significantly increased in Covid-19 patients. Also, Covid-19 patients had higher serum activity of CAT and GPX. Conclusion Oxidative stress markers are significantly elevated in Covid-19 patients. This may have significant role in mechanism of disease development. In the fight against Covid-19, as a global struggle, all possible treatments demand more attention. So, Covid-19 patients may benefit from strategies for reducing or preventing oxidative stress.
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Affiliation(s)
- Fereshteh Mehri
- Nutrition Health Research Center, Hamadan University of Medical Sciences, Hamadan, Iran.
| | | | | | - Bahram Souri
- Department of Infectious Disease, Ayatollah Bahari Hospital, Hamadan University of Medical Sciences, Hamadan, Iran.
| | - Maryam Esfahani
- Nutrition Health Research Center, Hamadan University of Medical Sciences. Hamadan, Iran.
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Jayawardena TU, Kim HS, Asanka Sanjeewa K, Han EJ, Jee Y, Ahn G, Rho JR, Jeon YJ. Loliolide, isolated from Sargassum horneri; abate LPS-induced inflammation via TLR mediated NF-κB, MAPK pathways in macrophages. ALGAL RES 2021. [DOI: 10.1016/j.algal.2021.102297] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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60
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Forcados GE, Muhammad A, Oladipo OO, Makama S, Meseko CA. Metabolic Implications of Oxidative Stress and Inflammatory Process in SARS-CoV-2 Pathogenesis: Therapeutic Potential of Natural Antioxidants. Front Cell Infect Microbiol 2021; 11:654813. [PMID: 34123871 PMCID: PMC8188981 DOI: 10.3389/fcimb.2021.654813] [Citation(s) in RCA: 51] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2021] [Accepted: 05/10/2021] [Indexed: 12/12/2022] Open
Abstract
COVID-19 is a zoonotic disease with devastating economic and public health impacts globally. Being a novel disease, current research is focused on a clearer understanding of the mechanisms involved in its pathogenesis and viable therapeutic strategies. Oxidative stress and inflammation are intertwined processes that play roles in disease progression and response to therapy via interference with multiple signaling pathways. The redox status of a host cell is an important factor in viral entry due to the unique conditions required for the conformational changes that ensure the binding and entry of a virus into the host cell. Upon entry into the airways, viral replication occurs and the innate immune system responds by activating macrophage and dendritic cells which contribute to inflammation. This review examines available literature and proposes mechanisms by which oxidative stress and inflammation could contribute to COVID-19 pathogenesis. Further, certain antioxidants currently undergoing some form of trial in COVID-19 patients and the corresponding required research gaps are highlighted to show how targeting oxidative stress and inflammation could ameliorate COVID-19 severity.
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Affiliation(s)
| | - Aliyu Muhammad
- Department of Biochemistry, Ahmadu Bello University, Zaria, Nigeria
| | | | - Sunday Makama
- Biochemistry Division, National Veterinary Research Institute (NVRI), Vom, Nigeria
| | - Clement Adebajo Meseko
- Regional Laboratory for Avian Influenza and Other Transboundary Animal Diseases, National Veterinary Research Institute, Vom, Nigeria
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Declerck K, Novo CP, Grielens L, Van Camp G, Suter A, Vanden Berghe W. Echinacea purpurea (L.) Moench treatment of monocytes promotes tonic interferon signaling, increased innate immunity gene expression and DNA repeat hypermethylated silencing of endogenous retroviral sequences. BMC Complement Med Ther 2021; 21:141. [PMID: 33980308 PMCID: PMC8114977 DOI: 10.1186/s12906-021-03310-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2020] [Accepted: 04/27/2021] [Indexed: 12/12/2022] Open
Abstract
Background Herbal remedies of Echinacea purpurea tinctures are widely used today to reduce common cold respiratory tract infections. Methods Transcriptome, epigenome and kinome profiling allowed a systems biology level characterisation of genomewide immunomodulatory effects of a standardized Echinacea purpurea (L.) Moench extract in THP1 monocytes. Results Gene expression and DNA methylation analysis revealed that Echinaforce® treatment triggers antiviral innate immunity pathways, involving tonic IFN signaling, activation of pattern recognition receptors, chemotaxis and immunometabolism. Furthermore, phosphopeptide based kinome activity profiling and pharmacological inhibitor experiments with filgotinib confirm a key role for Janus Kinase (JAK)-1 dependent gene expression changes in innate immune signaling. Finally, Echinaforce® treatment induces DNA hypermethylation at intergenic CpG, long/short interspersed nuclear DNA repeat elements (LINE, SINE) or long termininal DNA repeats (LTR). This changes transcription of flanking endogenous retroviral sequences (HERVs), involved in an evolutionary conserved (epi) genomic protective response against viral infections. Conclusions Altogether, our results suggest that Echinaforce® phytochemicals strengthen antiviral innate immunity through tonic IFN regulation of pattern recognition and chemokine gene expression and DNA repeat hypermethylated silencing of HERVs in monocytes. These results suggest that immunomodulation by Echinaforce® treatment holds promise to reduce symptoms and duration of infection episodes of common cold corona viruses (CoV), Severe Acute Respiratory Syndrome (SARS)-CoV, and new occurring strains such as SARS-CoV-2, with strongly impaired interferon (IFN) response and weak innate antiviral defense. Supplementary Information The online version contains supplementary material available at 10.1186/s12906-021-03310-5.
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Affiliation(s)
- Ken Declerck
- Laboratory of Protein Chemistry, Proteomics and Epigenetic Signaling (PPES), Department of Biomedical Sciences, University of Antwerp (UA), Antwerp, Belgium
| | - Claudina Perez Novo
- Laboratory of Protein Chemistry, Proteomics and Epigenetic Signaling (PPES), Department of Biomedical Sciences, University of Antwerp (UA), Antwerp, Belgium
| | - Lisa Grielens
- Laboratory of Protein Chemistry, Proteomics and Epigenetic Signaling (PPES), Department of Biomedical Sciences, University of Antwerp (UA), Antwerp, Belgium
| | - Guy Van Camp
- Center of Medical Genetics, Department of Biomedical Sciences, University of Antwerp (UA) and University Hospital Antwerp (UZA), Antwerp, Belgium
| | | | - Wim Vanden Berghe
- Laboratory of Protein Chemistry, Proteomics and Epigenetic Signaling (PPES), Department of Biomedical Sciences, University of Antwerp (UA), Antwerp, Belgium.
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In Pursuit of Healthy Aging: Effects of Nutrition on Brain Function. Int J Mol Sci 2021; 22:ijms22095026. [PMID: 34068525 PMCID: PMC8126018 DOI: 10.3390/ijms22095026] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Revised: 05/05/2021] [Accepted: 05/06/2021] [Indexed: 02/07/2023] Open
Abstract
Consuming a balanced, nutritious diet is important for maintaining health, especially as individuals age. Several studies suggest that consuming a diet rich in antioxidants and anti-inflammatory components such as those found in fruits, nuts, vegetables, and fish may reduce age-related cognitive decline and the risk of developing various neurodegenerative diseases. Numerous studies have been published over the last decade focusing on nutrition and how this impacts health. The main objective of the current article is to review the data linking the role of diet and nutrition with aging and age-related cognitive decline. Specifically, we discuss the roles of micronutrients and macronutrients and provide an overview of how the gut microbiota-gut-brain axis and nutrition impact brain function in general and cognitive processes in particular during aging. We propose that dietary interventions designed to optimize the levels of macro and micronutrients and maximize the functioning of the microbiota-gut-brain axis can be of therapeutic value for improving cognitive functioning, particularly during aging.
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Williams AD, Ha S, Shenassa E, Messer LC, Kanner J, Mendola P. Joint effects of ethnic enclave residence and ambient volatile organic compounds exposure on risk of gestational diabetes mellitus among Asian/Pacific Islander women in the United States. Environ Health 2021; 20:56. [PMID: 33964949 PMCID: PMC8106843 DOI: 10.1186/s12940-021-00738-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Accepted: 04/26/2021] [Indexed: 05/06/2023]
Abstract
BACKGROUND Asian/Pacific Islander (API) communities in the United States often reside in metropolitan areas with distinct social and environmental attributes. Residence in an ethnic enclave, a socially distinct area, is associated with lower gestational diabetes mellitus (GDM) risk, yet exposure to high levels of air pollution, including volatile organic compounds (VOCS), is associated with increased GDM risk. We examined the joint effects of ethnic enclaves and VOCs to better understand GDM risk among API women, the group with the highest prevalence of GDM. METHODS We examined 9069 API births in the Consortium on Safe Labor (19 hospitals, 2002-2008). API ethnic enclaves were defined as areas ≥66th percentile for percent API residents, dissimilarity (geographic dispersal of API and White residents), and isolation (degree that API individuals interact with another API individual). High levels of 14 volatile organic compounds (VOC) were defined as ≥75th percentile. Four joint categories were created for each VOC: Low VOC/Enclave (reference group), Low VOC/No Enclave, High VOC/Enclave, High VOC/No Enclave. GDM was reported in medical records. Hierarchical logistic regression estimated odds ratios (OR) and 95% confidence intervals (95%CI) between joint exposures and GDM, adjusted for maternal factors and area-level poverty. Risk was estimated for 3-months preconception and first trimester exposures. RESULTS Enclave residence was associated with lower GDM risk regardless of VOC exposure. Preconception benzene exposure was associated with increased risk when women resided outside enclaves [High VOC/No Enclave (OR:3.45, 95%CI:1.77,6.72)], and the effect was somewhat mitigated within enclaves, [High VOC/Enclave (OR:2.07, 95%:1.09,3.94)]. Risks were similar for 12 of 14 VOCs during preconception and 10 of 14 during the first trimester. CONCLUSIONS API residence in non-enclave areas is associated with higher GDM risk, regardless of VOC level. Ethnic enclave residence may mitigate effects of VOC exposure, perhaps due to lower stress levels. The potential benefit of ethnic enclaves warrants further study.
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Affiliation(s)
- Andrew D. Williams
- Public Health program, Department of Population Health, School of Medicine & Health Sciences, University of North Dakota, Room E162, 1301 North Columbia Road Stop 9037, Grand Forks, ND 58202-9037 USA
| | - Sandie Ha
- School of Social Sciences, Humanities and Arts, Health Science Research Institute, University of California, 5200 N. Lake Road, Merced, CA USA
| | - Edmond Shenassa
- Maternal and Child Health Program, Department of Family Science, University of Maryland College Park, 4200 Valley Drive, College Park, MD USA
| | - Lynne C. Messer
- OHSU-PSU School of Public Health, Portland State University, 506 SW Mill Street 470H, Portland, OR USA
| | - Jenna Kanner
- Epidemiology Branch, Division of Intramural Population Health Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, 6710B Rockledge Drive, MSC, Bethesda, MD 7004 USA
| | - Pauline Mendola
- Epidemiology Branch, Division of Intramural Population Health Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, 6710B Rockledge Drive, MSC, Bethesda, MD 7004 USA
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64
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Inamo J. Association of differentially expressed genes and autoantibody type in patients with systemic sclerosis. Rheumatology (Oxford) 2021; 60:929-939. [PMID: 32911535 DOI: 10.1093/rheumatology/keaa447] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Revised: 06/21/2020] [Indexed: 12/11/2022] Open
Abstract
OBJECTIVES The aims of this study were to investigate the relationship between the type of autoantibody and gene expression profile in skin lesions from patients with SSc, and to identify specific dysregulated pathways in SSc patients compared with healthy controls. METHODS Sixty-one patients with SSc from the Genetics vs Environment in Scleroderma Outcome Study cohort and 36 healthy controls were included in this study. Differentially expressed genes were extracted and functional enrichment and pathway analysis were conducted. RESULTS Compared with healthy controls, lists containing 2, 71, 10, 144 and 78 differentially expressed genes were created for patients without specific autoantibody, ACA, anti-U1 RNP antibody (RNP), anti-RNA polymerase III antibody (RNAP) and anti-topoisomerase I antibody (ATA), respectively. While part of the enriched pathways overlapped, distinct pathways were identified except in those patients lacking specific autoantibody. The distinct enriched pathways included 'keratinocyte differentiation' for ACA, 'nuclear factor κB signalling' and 'cellular response to TGF-β stimulus' for RNAP, 'interferon α/β signalling' for RNP, and 'cellular response to stress' for ATA. Cell type signature score analysis revealed that macrophages/monocytes, endothelial cells and fibroblasts were associated with ACA, RNAP, ATA and the severity of the SSc skin lesions. CONCLUSION Pathogenic pathways were identified according to the type of autoantibody by leveraging gene expression data of patients and controls from a multicentre cohort. The current study may promote the search for new therapeutic targets for SSc.
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Affiliation(s)
- Jun Inamo
- Division of Rheumatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
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Yang S, Yang Y, Wang F, Luo Q, Zhang Y, Zheng F, Shu Q, Chen Q, Fang X. TREM2 Dictates Antibacterial Defense and Viability of Bone Marrow-derived Macrophages during Bacterial Infection. Am J Respir Cell Mol Biol 2021; 65:176-188. [PMID: 33848212 DOI: 10.1165/rcmb.2020-0521oc] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Macrophages undergo profound metabolic reprogramming to join key immunoregulatory functions, which can be initiated by pattern recognition receptors. TREM2 (triggering receptor expressed on myeloid cells 2), a macrophage phagocytic receptor, plays pivotal roles in sepsis by enhancing bacterial clearance, which is associated with regulation of reactive oxygen species (ROS) production. However, how intracellular ROS participate in TREM2-mediated bactericidal activity remains unclear. This study was designed to investigate the organelle source and biological activity of ROS in the context of TREM2-mediated immune defense during Escherichia coli infection. Bone marrow-derived macrophages (BMDMs) were transfected with TREM2-overexpressing adenoviruses or control viruses and challenged with E. coli. The BMDMs were administered to mouse models with local E. coli infection. In addition, monocytic TREM2 expression, NOX2 concentrations, and pyroptosis were detected in patients with bacterial sepsis. General ROS production was found to be comparable between TREM2-overexpressing and control BMDMs upon E. coli challenge. The deficiency of Nox2 led to impaired phagosome degradation and lack of bactericidal ability and abolished TREM2-mediated protective activity against pulmonary E. coli infection. Overexpression of TREM2 suppressed mitochondrial ROS generation, inhibited NLRP3/caspase-1 inflammasome activation, and finally protected BMDMs from gasdermin D-mediated pyroptosis during pulmonary E. coli infection. The protective role of TREM2 was further confirmed in mice with abdominal E. coli infection. Moreover, monocytic TREM2 expression was positively correlated with NOX2 concentrations and negatively correlated with pyroptosis and disease severity in patients with bacterial sepsis. Collectively, TREM2 controls macrophage immune functions by fine-tuning ROS generation and enhances the host defense against bacterial infection. Our data suggest that TREM2 is a promising candidate target for sepsis therapy.
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Affiliation(s)
- ShiYue Yang
- Department of Anesthesiology and Intensive Care, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China; and
| | - Yang Yang
- Department of Anesthesiology and Intensive Care, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China; and
| | - FeiFei Wang
- Department of Anesthesiology and Intensive Care, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China; and
| | - QinYu Luo
- Department of Clinical Research Center, The Children's Hospital, School of Medicine, Zhejiang University, National Clinical Research Center for Child Health, Hangzhou, China
| | - Yan Zhang
- Department of Clinical Research Center, The Children's Hospital, School of Medicine, Zhejiang University, National Clinical Research Center for Child Health, Hangzhou, China
| | - Fei Zheng
- Department of Clinical Research Center, The Children's Hospital, School of Medicine, Zhejiang University, National Clinical Research Center for Child Health, Hangzhou, China
| | - Qiang Shu
- Department of Clinical Research Center, The Children's Hospital, School of Medicine, Zhejiang University, National Clinical Research Center for Child Health, Hangzhou, China
| | - QiXing Chen
- Department of Clinical Research Center, The Children's Hospital, School of Medicine, Zhejiang University, National Clinical Research Center for Child Health, Hangzhou, China
| | - XiangMing Fang
- Department of Anesthesiology and Intensive Care, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China; and
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In vivo proton magnetic resonance spectroscopy detection of metabolite abnormalities in aged Tat-transgenic mouse brain. GeroScience 2021; 43:1851-1862. [PMID: 33818687 DOI: 10.1007/s11357-021-00354-w] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Accepted: 03/10/2021] [Indexed: 12/18/2022] Open
Abstract
Most individuals living with HIV in the USA are over 45 years old and are vulnerable to the combined effects of HIV and aging. Antiretroviral therapies reduce HIV morbidity and mortality but do not prevent HIV trans-activator of transcription (Tat) protein expression or development of HIV-associated neurocognitive disorder (HAND), which may be caused by Tat. Tat-transgenic (Tat-tg) mice are used to study Tat's effects, typically after transgene induction with doxycycline. However, uninduced Tat-tg mice experience transgene leak and model aspects of HAND when aged, including neuroinflammation. We used in vivo 9.4-tesla proton magnetic resonance spectroscopy to compare neurochemistry in aged versus young female and male uninduced Tat-tg mice. Aged Tat-tg mice demonstrated measurable tat mRNA brain expression and had lower medial prefrontal cortex (MPFC) GABA, glutamate, and taurine levels and lower striatal GABA and taurine levels. Females had lower MPFC glutathione and taurine and lower striatal taurine levels. Brain testosterone levels were negatively correlated with age in aged males but not females. Aged mice had cortical abnormalities not previously reported in aged wild-type mice including lower MPFC GABA and taurine levels. As glutathione and taurine levels reflect inflammation and oxidative stress, our data suggest that Tat may exacerbate these processes in aged Tat-tg mice. However, additional studies in controls not expressing Tat are needed to confirm this point and to deconvolve individual effects of age and Tat expression. Sex steroid hormone supplements, which counter climacteric effects, increase taurine levels, and reduce inflammation and oxidative stress, could attenuate some of the brain abnormalities we identified in aged Tat-tg mice.
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67
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Chattopadhyay P, Srinivasa Vasudevan J, Pandey R. Noncoding RNAs: modulators and modulatable players during infection-induced stress response. Brief Funct Genomics 2021; 20:28-41. [PMID: 33491070 PMCID: PMC7929421 DOI: 10.1093/bfgp/elaa026] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Revised: 12/09/2020] [Accepted: 12/11/2020] [Indexed: 12/16/2022] Open
Abstract
The human genome has an almost equal distribution of unique and transposable genetic elements. Although at the transcriptome level, a relatively higher contribution from transposable elements derived RNA has been reported. This is further highlighted with evidence from pervasive transcription. Of the total RNA, noncoding RNAs (ncRNAs) are significant contributors to the transcriptome pool with sizeable fraction from repetitive elements of the human genome, inclusive of Long Interspersed Nuclear Elements (LINEs) and Short Interspersed Nuclear Elements (SINEs). ncRNAs are increasingly being implicated in diverse functional roles especially during conditions of stress. These stress responses are driven through diverse mediators, inclusive of long and short ncRNAs. ncRNAs such as MALAT1, GAS5, miR-204 and miR-199a-5p have been functionally involved during oxidative stress, endoplasmic reticulum (ER) stress and unfolded protein response (UPR). Also, within SINEs, Alu RNAs derived from primate-specific Alu repeats with ~11% human genome contribution, playing a significant role. Pathogenic diseases, including the recent COVID-19, leads to differential regulation of ncRNAs. Although, limited evidence suggests the need for an inquest into the role of ncRNAs in determining the host response towards pathogen challenge.
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Affiliation(s)
| | | | - Rajesh Pandey
- Corresponding author: Rajesh Pandey, INtegrative GENomics of HOst-PathogEn (INGEN-HOPE) laboratory. CSIR-Institute of Genomics and Integrative Biology (CSIR-IGIB), North Campus, Near Jubilee Hall, Mall Road, Delhi-110007, India. Tel.: +91 9811029551; E-mail:
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Asaad M, Kaisar Ali M, Abo-Kadoum MA, Lambert N, Gong Z, Wang H, Uae M, Nazou SAE, Kuang Z, Xie J. Mycobacterium tuberculosis PPE10 (Rv0442c) alters host cell apoptosis and cytokine profile via linear ubiquitin chain assembly complex HOIP-NF-κB signaling axis. Int Immunopharmacol 2021; 94:107363. [PMID: 33667868 DOI: 10.1016/j.intimp.2020.107363] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2020] [Revised: 12/27/2020] [Accepted: 12/30/2020] [Indexed: 12/20/2022]
Abstract
Tuberculosis caused by Mycobacterium tuberculosis infection remains one of the top ten causes of deaths worldwide. M. tuberculosis genome devoted 10% capacity for highly repeated PE/PPE genes family. To explore the role of PPE10 in host-pathogen interaction, PPE10 encoding gene Rv0442c was heterologously expressed in the nonpathogenic M. smegmatis strain. PPE10 altered the bacterial cell surface properties, colony morphology, and biofilm formation. Ms_PPE10 showed more resistance to stress conditions such as diamide, and low pH, as well as higher survival within the macrophage. Moreover, the host's cell apoptosis was regulated via decreased expression of caspases, IL-1, IL-6, and TNF-α through the Linear Ubiquitin Chain Assembly Complex (LUBAC) HOIP-NF-κB signaling axis. The study revealed novel insights into the mechanism of action of the PPE family.
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Affiliation(s)
- Mohammed Asaad
- State Key Laboratory Breeding Base of Eco-Environment and Bio-Resource of the Three Gorges Area, Key Laboratory of Eco-Environments in Three Gorges Reservoir Region, Ministry of Education, School of Life Sciences, Institute of Modern Biopharmaceuticals, Southwest University, Chongqing, PR China; Department of Biotechnology, Faculty of Science and Technology, Omdurman Islamic University, Omdurman, Khartoum, Sudan
| | - Md Kaisar Ali
- State Key Laboratory Breeding Base of Eco-Environment and Bio-Resource of the Three Gorges Area, Key Laboratory of Eco-Environments in Three Gorges Reservoir Region, Ministry of Education, School of Life Sciences, Institute of Modern Biopharmaceuticals, Southwest University, Chongqing, PR China
| | - M A Abo-Kadoum
- State Key Laboratory Breeding Base of Eco-Environment and Bio-Resource of the Three Gorges Area, Key Laboratory of Eco-Environments in Three Gorges Reservoir Region, Ministry of Education, School of Life Sciences, Institute of Modern Biopharmaceuticals, Southwest University, Chongqing, PR China; Department of Botany and Microbiology, Faculty of Science, Al-Azhar University Assuit branch, Egypt
| | - Nzungize Lambert
- State Key Laboratory Breeding Base of Eco-Environment and Bio-Resource of the Three Gorges Area, Key Laboratory of Eco-Environments in Three Gorges Reservoir Region, Ministry of Education, School of Life Sciences, Institute of Modern Biopharmaceuticals, Southwest University, Chongqing, PR China
| | - Zhen Gong
- State Key Laboratory Breeding Base of Eco-Environment and Bio-Resource of the Three Gorges Area, Key Laboratory of Eco-Environments in Three Gorges Reservoir Region, Ministry of Education, School of Life Sciences, Institute of Modern Biopharmaceuticals, Southwest University, Chongqing, PR China
| | - Hao Wang
- State Key Laboratory Breeding Base of Eco-Environment and Bio-Resource of the Three Gorges Area, Key Laboratory of Eco-Environments in Three Gorges Reservoir Region, Ministry of Education, School of Life Sciences, Institute of Modern Biopharmaceuticals, Southwest University, Chongqing, PR China
| | - Moure Uae
- State Key Laboratory Breeding Base of Eco-Environment and Bio-Resource of the Three Gorges Area, Key Laboratory of Eco-Environments in Three Gorges Reservoir Region, Ministry of Education, School of Life Sciences, Institute of Modern Biopharmaceuticals, Southwest University, Chongqing, PR China
| | - Stech A E Nazou
- State Key Laboratory Breeding Base of Eco-Environment and Bio-Resource of the Three Gorges Area, Key Laboratory of Eco-Environments in Three Gorges Reservoir Region, Ministry of Education, School of Life Sciences, Institute of Modern Biopharmaceuticals, Southwest University, Chongqing, PR China
| | - Zhongmei Kuang
- State Key Laboratory Breeding Base of Eco-Environment and Bio-Resource of the Three Gorges Area, Key Laboratory of Eco-Environments in Three Gorges Reservoir Region, Ministry of Education, School of Life Sciences, Institute of Modern Biopharmaceuticals, Southwest University, Chongqing, PR China
| | - Jianping Xie
- State Key Laboratory Breeding Base of Eco-Environment and Bio-Resource of the Three Gorges Area, Key Laboratory of Eco-Environments in Three Gorges Reservoir Region, Ministry of Education, School of Life Sciences, Institute of Modern Biopharmaceuticals, Southwest University, Chongqing, PR China.
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69
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Green DR. Health and Fitness at the Single-Cell Level. Cancer Immunol Res 2021; 9:130-135. [PMID: 33536268 DOI: 10.1158/2326-6066.cir-20-0418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Revised: 09/14/2020] [Accepted: 11/18/2020] [Indexed: 11/16/2022]
Abstract
Genetically identical cells in a tissue can respond differently to perturbations in their environment or "stress." Such stresses can be physicochemical, mechanical, or infectious or may come from competition with other cells in the tissue. Here, I discuss how the varying responses to stress influence the decision of a cell to repair or die, and how one cell's response can have effects on surrounding cells. Such responses control the health and fitness of single cells and how they compete with other genetically identical cells.See related article on p. 129.
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Affiliation(s)
- Douglas R Green
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, Tennessee.
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Hernandez EP, Talactac MR, Vitor RJS, Yoshii K, Tanaka T. An Ixodes scapularis glutathione S-transferase plays a role in cell survival and viability during Langat virus infection of a tick cell line. Acta Trop 2021; 214:105763. [PMID: 33242485 DOI: 10.1016/j.actatropica.2020.105763] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Revised: 11/15/2020] [Accepted: 11/16/2020] [Indexed: 12/14/2022]
Abstract
Ticks are important vectors of diseases affecting both humans and animals. To be an efficient vector, ticks have to survive infection by pathogens such as the Langat virus (LGTV). One method utilized by ticks is their complex antioxidant mechanism. Included in the vast antioxidant processes are several enzymes involved in redox homeostasis. The ubiquitous glutathione S-transferases (GSTs) belong to the antioxidant family of enzymes. In this study, we evaluated the role of a GST during LGTV infection. ISE6 cells were infected with LGTV with a multiplicity of infection (MOI) of 0.01 and observed daily. The infection success was monitored via indirect immunofluorescent antibody test (IFAT) for LGTV for up to 4 days. The gene expression of IsGST1 was determined by real-time polymerase chain reaction (PCR) using IsGST1 gene-specific primers. Knockdown of the IsGST1 gene with subsequent LGTV infection was also performed. Afterward, ISE6 cell mortality and viability were checked daily until the fourth day. The virus titer from supernatants of IsGST1-knockdown cells was quantified using a focus-formation assay. IFAT data showed that LGTV infects ISE6 cells in a time-dependent manner with increasing infection from day 0 to day 4. The IsGST1 genes showed an increasing expression until day 2 of infection, while decreased expression was observed from day 3 to day 4 post-infection. Knockdown of the IsGST1 resulted in increased mortality on the third day of infection, while the cell viability was also negatively affected by the knockdown of the IsGST1 genes from day 0 to day 4 post-infection. Knockdown of the IsGST1 genes also resulted in a decreased viral titer from the supernatants of the ISE6 cells infected with LGTV. Based on the results, GSTs are possibly utilized both by cells and the virus for mutual survival and proliferation.
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71
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Sharma J, Parsai K, Raghuwanshi P, Ali SA, Tiwari V, Bhargava A, Mishra PK. Emerging role of mitochondria in airborne particulate matter-induced immunotoxicity. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 270:116242. [PMID: 33321436 DOI: 10.1016/j.envpol.2020.116242] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2020] [Revised: 11/23/2020] [Accepted: 12/06/2020] [Indexed: 05/05/2023]
Abstract
The immune system is one of the primary targets of airborne particulate matter. Recent evidence suggests that mitochondria lie at the center of particulate matter-induced immunotoxicity. Particulate matter can directly interact with mitochondrial components (proteins, lipids, and nucleic acids) and impairs the vital mitochondrial processes including redox mechanisms, fusion-fission, autophagy, and metabolic pathways. These disturbances impede different mitochondrial functions including ATP production, which acts as an important platform to regulate immunity and inflammatory responses. Moreover, the mitochondrial DNA released into the cytosol or in the extracellular milieu acts as a danger-associated molecular pattern and triggers the signaling pathways, involving cGAS-STING, TLR9, and NLRP3. In the present review, we discuss the emerging role of mitochondria in airborne particulate matter-induced immunotoxicity and its myriad biological consequences in health and disease.
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Affiliation(s)
- Jahnavi Sharma
- Department of Molecular Biology, ICMR-National Institute for Research in Environmental Health, Bhopal, India
| | - Kamakshi Parsai
- Department of Molecular Biology, ICMR-National Institute for Research in Environmental Health, Bhopal, India
| | - Pragati Raghuwanshi
- Department of Molecular Biology, ICMR-National Institute for Research in Environmental Health, Bhopal, India
| | - Sophiya Anjum Ali
- Department of Molecular Biology, ICMR-National Institute for Research in Environmental Health, Bhopal, India
| | - Vineeta Tiwari
- Department of Molecular Biology, ICMR-National Institute for Research in Environmental Health, Bhopal, India
| | - Arpit Bhargava
- Department of Molecular Biology, ICMR-National Institute for Research in Environmental Health, Bhopal, India
| | - Pradyumna Kumar Mishra
- Department of Molecular Biology, ICMR-National Institute for Research in Environmental Health, Bhopal, India.
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Proteomics analysis of human intestinal organoids during hypoxia and reoxygenation as a model to study ischemia-reperfusion injury. Cell Death Dis 2021; 12:95. [PMID: 33462215 PMCID: PMC7813872 DOI: 10.1038/s41419-020-03379-9] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2020] [Revised: 12/21/2020] [Accepted: 12/22/2020] [Indexed: 12/15/2022]
Abstract
Intestinal ischemia-reperfusion (IR) injury is associated with high mortality rates, which have not improved in the past decades despite advanced insight in its pathophysiology using in vivo animal and human models. The inability to translate previous findings to effective therapies emphasizes the need for a physiologically relevant in vitro model to thoroughly investigate mechanisms of IR-induced epithelial injury and test potential therapies. In this study, we demonstrate the use of human small intestinal organoids to model IR injury by exposing organoids to hypoxia and reoxygenation (HR). A mass-spectrometry-based proteomics approach was applied to characterize organoid differentiation and decipher protein dynamics and molecular mechanisms of IR injury in crypt-like and villus-like human intestinal organoids. We showed successful separation of organoids exhibiting a crypt-like proliferative phenotype, and organoids exhibiting a villus-like phenotype, enriched for enterocytes and goblet cells. Functional enrichment analysis of significantly changing proteins during HR revealed that processes related to mitochondrial metabolism and organization, other metabolic processes, and the immune response were altered in both organoid phenotypes. Changes in protein metabolism, as well as mitophagy pathway and protection against oxidative stress were more pronounced in crypt-like organoids, whereas cellular stress and cell death associated protein changes were more pronounced in villus-like organoids. Profile analysis highlighted several interesting proteins showing a consistent temporal profile during HR in organoids from different origin, such as NDRG1, SDF4 or DMBT1. This study demonstrates that the HR response in human intestinal organoids recapitulates properties of the in vivo IR response. Our findings provide a framework for further investigations to elucidate underlying mechanisms of IR injury in crypt and/or villus separately, and a model to test therapeutics to prevent IR injury.
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Kim HJ, Kim IS, Lee SG, Kim YJ, Silwal P, Kim JY, Kim JK, Seo W, Chung C, Cho HK, Huh HJ, Shim SC, Park C, Jhun BW, Jo EK. MiR-144-3p is associated with pathological inflammation in patients infected with Mycobacteroides abscessus. Exp Mol Med 2021; 53:136-149. [PMID: 33473145 PMCID: PMC8080579 DOI: 10.1038/s12276-020-00552-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Revised: 11/03/2020] [Accepted: 11/09/2020] [Indexed: 01/29/2023] Open
Abstract
Infection with rapidly growing nontuberculous mycobacteria is emerging as a global health issue; however, key host factors remain elusive. Here, we investigated the characteristic immune profiles of peripheral blood mononuclear cells (PBMCs) from patients infected with Mycobacteroides abscessus subsp. abscessus (Mabc) and M. abscessus subsp. massiliense (Mmass). Using an integrated analysis of global mRNA and microRNA expression profiles, we found that several inflammatory cytokines/chemokines [interleukin (IL)-1β, IL-6, C-X-C motif chemokine ligand 2, and C-C motif chemokine ligand 2] and miR-144-3p were significantly upregulated in PBMCs from patients compared with those from healthy controls (HCs). Notably, there was a strong correlation between the expression levels of miR-144-3p and proinflammatory cytokines/chemokines. Similarly, upregulated expression of miR-144-3p and proinflammatory cytokines/chemokines was found in macrophages and lungs from mice after infection with Mabc and Mmass. We showed that the expression of negative regulators of inflammation (SARM1 and TNIP3) was significantly downregulated in PBMCs from the patients, although they were not putative targets of miR-144-3p. Furthermore, overexpression of miR-144-3p led to a marked increase in proinflammatory cytokines/chemokines and promoted bacterial growth in macrophages. Together, our results highlight the importance of miR-144-3p linking to pathological inflammation during M. abscessus infection.
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Affiliation(s)
- Hyeon Ji Kim
- Department of Microbiology, Chungnam National University School of Medicine, Daejeon, 35015, Korea
- Department of Medical Science, Chungnam National University School of Medicine, Daejeon, 35015, Korea
- Infection Control Convergence Research Center, Chungnam National University School of Medicine, Daejeon, 35015, Korea
| | - In Soo Kim
- Department of Microbiology, Chungnam National University School of Medicine, Daejeon, 35015, Korea
- Department of Medical Science, Chungnam National University School of Medicine, Daejeon, 35015, Korea
- Infection Control Convergence Research Center, Chungnam National University School of Medicine, Daejeon, 35015, Korea
| | - Sung-Gwon Lee
- School of Biological Sciences and Technology, Chonnam National University, Gwangju, 61186, Korea
| | - Young Jae Kim
- Department of Microbiology, Chungnam National University School of Medicine, Daejeon, 35015, Korea
- Department of Medical Science, Chungnam National University School of Medicine, Daejeon, 35015, Korea
- Infection Control Convergence Research Center, Chungnam National University School of Medicine, Daejeon, 35015, Korea
| | - Prashanta Silwal
- Department of Microbiology, Chungnam National University School of Medicine, Daejeon, 35015, Korea
- Infection Control Convergence Research Center, Chungnam National University School of Medicine, Daejeon, 35015, Korea
| | - Ji Young Kim
- Division of Rheumatology, Regional Rheumatoid & Degenerative Arthritis Center, Chungnam National University School of Medicine, Daejeon, 35015, Korea
| | - Jin Kyung Kim
- Department of Microbiology, Chungnam National University School of Medicine, Daejeon, 35015, Korea
- Infection Control Convergence Research Center, Chungnam National University School of Medicine, Daejeon, 35015, Korea
| | - Wonhyoung Seo
- Department of Microbiology, Chungnam National University School of Medicine, Daejeon, 35015, Korea
- Department of Medical Science, Chungnam National University School of Medicine, Daejeon, 35015, Korea
- Infection Control Convergence Research Center, Chungnam National University School of Medicine, Daejeon, 35015, Korea
| | - Chaeuk Chung
- Infection Control Convergence Research Center, Chungnam National University School of Medicine, Daejeon, 35015, Korea
- Division of Pulmonary and Critical Care, Department of Internal Medicine, Chungnam National University School of Medicine, Daejeon, 35015, Korea
| | - Hyun Kyu Cho
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, 06351, Korea
| | - Hee Jae Huh
- Department of Laboratory Medicine and Genetics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, 06351, Korea
| | - Seung Cheol Shim
- Division of Rheumatology, Regional Rheumatoid & Degenerative Arthritis Center, Chungnam National University School of Medicine, Daejeon, 35015, Korea
| | - Chungoo Park
- School of Biological Sciences and Technology, Chonnam National University, Gwangju, 61186, Korea.
| | - Byung Woo Jhun
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, 06351, Korea.
| | - Eun-Kyeong Jo
- Department of Microbiology, Chungnam National University School of Medicine, Daejeon, 35015, Korea.
- Department of Medical Science, Chungnam National University School of Medicine, Daejeon, 35015, Korea.
- Infection Control Convergence Research Center, Chungnam National University School of Medicine, Daejeon, 35015, Korea.
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74
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Gamil AAA, Gadan K, Gislefoss E, Evensen Ø. Sea Lice ( Lepeophtheirus salmonis) Infestation Reduces the Ability of Peripheral Blood Monocytic Cells (PBMCs) to Respond to and Control Replication of Salmonid Alphavirus in Atlantic Salmon ( Salmo salar L.). Viruses 2020; 12:v12121450. [PMID: 33339349 PMCID: PMC7766357 DOI: 10.3390/v12121450] [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: 11/04/2020] [Revised: 12/09/2020] [Accepted: 12/14/2020] [Indexed: 12/21/2022] Open
Abstract
Here we have studied the impact of lice (Lepeophtheirus salmonis) infestation of donor fish on the ability of isolated peripheral blood monocytes (PBMCs) to control the replication of salmonid alphavirus (SAV) ex vivo. PBMCs were collected by Percoll gradients at eight and nine weeks post copepodid infestation of Atlantic salmon post smolt. Uninfested fish were controls. PBMCs were then infected ex vivo with SAV (subtype 3), and samples were collected for analysis at two, four, and six days post virus infection. Virus titer in the supernatant was assayed in CHH-1 cells, and in addition, the relative expression of the virus structural protein E2 and selected host antiviral genes, IRF9, ISG15, Mx, and IFIT5, were assayed using real-time PCR. Significantly higher virus replication was detected in cells collected from lice-infested fish compared to controls. Higher virus titer coincided with an inability to upregulate the expression of different immune genes, IFIT5, IRF9, and Mx. These findings point towards compromised ability of PBMCs from lice-infested fish to control virus replication, and, to our knowledge, is the first report showing the direct effect of lice infestation on the interplay between viruses and immune cells. There is a possible impact on the dynamic spread of viral diseases in the aquatic environment.
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75
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Wang S, Ni L, Fu X, Duan D, Xu J, Gao X. A Sulfated Polysaccharide from Saccharina japonica Suppresses LPS-Induced Inflammation Both in a Macrophage Cell Model via Blocking MAPK/NF-κB Signal Pathways In Vitro and a Zebrafish Model of Embryos and Larvae In Vivo. Mar Drugs 2020; 18:E593. [PMID: 33255947 PMCID: PMC7760670 DOI: 10.3390/md18120593] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Revised: 11/19/2020] [Accepted: 11/24/2020] [Indexed: 12/18/2022] Open
Abstract
Inflammation is a complicated host-protective response to stimuli and toxic conditions, and is considered as a double-edged sword. A sulfated Saccharinajaponica polysaccharide (LJPS) with a sulfate content of 9.07% showed significant inhibitory effects against lipopolysaccharide (LPS)-induced inflammation in RAW 264.7 macrophage cells and zebrafish. Its chemical and structural properties were investigated via HPLC, GC, FTIR, and NMR spectroscopy. In vitro experiments demonstrated that LJPS significantly inhibited the generation of nitric oxide (NO) and prostaglandin E2 (PGE2) via the downregulation of inducible nitric oxide synthase (iNOS) and cyclooxygenase-2 (COX-2) expression and suppressed pro-inflammatory cytokines tumor necrosis factor (TNF)-α and interleukin (IL)-1β production via the nuclear factor-kappa B (NF-κB) and mitogen-activated protein kinase (MAPK) signal pathways in LPS-induced RAW 264.7 cells. Moreover, LJPS showed strong protective effects against LPS-induced inflammatory responses in zebrafish, increasing the survival rate, reducing the heart rate and yolk sac edema size, and inhibiting cell death and the production of intracellular reactive oxygen species (ROS) and NO. Its convenience for large-scale production and significant anti-inflammatory activity indicated the potential application of LJPS in functional foods, cosmetics, and pharmaceutical industries.
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Affiliation(s)
- Shengnan Wang
- College of Food Science & Engineering, Ocean University of China, 5th Yushan Road, Qingdao 266003, China; (S.W.); (L.N.); (J.X.); (X.G.)
| | - Liying Ni
- College of Food Science & Engineering, Ocean University of China, 5th Yushan Road, Qingdao 266003, China; (S.W.); (L.N.); (J.X.); (X.G.)
| | - Xiaoting Fu
- College of Food Science & Engineering, Ocean University of China, 5th Yushan Road, Qingdao 266003, China; (S.W.); (L.N.); (J.X.); (X.G.)
| | - Delin Duan
- State Key Lab of Seaweed Bioactive Substances, 1th Daxueyuan Road, Qingdao 266400, China;
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, 7th Nanhai Road, Qingdao 266071, China
| | - Jiachao Xu
- College of Food Science & Engineering, Ocean University of China, 5th Yushan Road, Qingdao 266003, China; (S.W.); (L.N.); (J.X.); (X.G.)
| | - Xin Gao
- College of Food Science & Engineering, Ocean University of China, 5th Yushan Road, Qingdao 266003, China; (S.W.); (L.N.); (J.X.); (X.G.)
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76
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Amorim VE, Gonçalves O, Capela R, Fernández-Boo S, Oliveira M, Dolbeth M, Arenas F, Cardoso PG. Immunological and oxidative stress responses of the bivalve Scrobicularia plana to distinct patterns of heatwaves. FISH & SHELLFISH IMMUNOLOGY 2020; 106:1067-1077. [PMID: 32956807 DOI: 10.1016/j.fsi.2020.09.024] [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: 06/15/2020] [Revised: 09/09/2020] [Accepted: 09/15/2020] [Indexed: 06/11/2023]
Abstract
As a consequence of global warming, extreme events, such as marine heatwaves (MHW), have been increasing in frequency and intensity with negative effects on aquatic organisms. This innovative study evaluated for the first time, the immunological and physiological response of the estuarine edible bivalve Scrobicularia plana to different heatwaves, with distinct duration and recovery periods. So, extensive immune (total haemocyte count - THC, haemocyte viability, phagocytosis rate, respiratory oxidative burst of haemocytes, total protein, protease activity, nitric oxide and bactericidal activity of plasma) and oxidative stress (lipid peroxidation - LPO, superoxide dismutase - SOD, catalase - CAT and glutathione-S-Transferase - GST) analyses were performed in an experimental study that tested the impact of heatwaves during 25 days. The survival and condition of S. plana were not affected by the exposure to the extreme events. However, our data suggested that longer heatwaves with shorter recovery periods can be more challenging for the species, since THC and phagocytic activity were most affected under the temperature increase conditions. Regarding the oxidative status, the species increased its SOD activity while MDA production slightly declined to the increase of temperature, protecting the organism from cellular damage. These results indicate that S. plana has a great capacity to adapt to environmental temperature changes, however, the expected higher frequency/duration of heatwaves with climate change trends can cause some debility of the species face to other stressors, which can compromise its success in the future.
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Affiliation(s)
- V E Amorim
- Group of Endocrine Disruptors and Emergent Compounds, Interdisciplinary Centre of Marine and Environmental Research (CIIMAR/CIMAR), University of Porto, Porto, Portugal
| | - O Gonçalves
- Group of Endocrine Disruptors and Emergent Compounds, Interdisciplinary Centre of Marine and Environmental Research (CIIMAR/CIMAR), University of Porto, Porto, Portugal
| | - R Capela
- Group of Endocrine Disruptors and Emergent Compounds, Interdisciplinary Centre of Marine and Environmental Research (CIIMAR/CIMAR), University of Porto, Porto, Portugal
| | - S Fernández-Boo
- Group of Animal Health and Aquaculture. Interdisciplinary Centre of Marine and Environmental Research (CIIMAR/CIMAR), University of Porto, Porto, Portugal
| | - M Oliveira
- Group of Endocrine Disruptors and Emergent Compounds, Interdisciplinary Centre of Marine and Environmental Research (CIIMAR/CIMAR), University of Porto, Porto, Portugal
| | - M Dolbeth
- Group of Benthic Ecology Team, Interdisciplinary Centre of Marine and Environmental Research (CIIMAR/CIMAR), University of Porto, Porto, Portugal
| | - F Arenas
- Group of Benthic Ecology Team, Interdisciplinary Centre of Marine and Environmental Research (CIIMAR/CIMAR), University of Porto, Porto, Portugal
| | - P G Cardoso
- Group of Endocrine Disruptors and Emergent Compounds, Interdisciplinary Centre of Marine and Environmental Research (CIIMAR/CIMAR), University of Porto, Porto, Portugal.
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77
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Murray KO, Brant JO, Iwaniec JD, Sheikh LH, de Carvalho L, Garcia CK, Robinson GP, Alzahrani JM, Riva A, Laitano O, Kladde MP, Clanton TL. Exertional heat stroke leads to concurrent long-term epigenetic memory, immunosuppression and altered heat shock response in female mice. J Physiol 2020; 599:119-141. [PMID: 33037634 DOI: 10.1113/jp280518] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Accepted: 10/07/2020] [Indexed: 12/21/2022] Open
Abstract
KEY POINTS Exposure to exertional heat stroke (EHS) has been linked to increased long-term decrements of health. Epigenetic reprogramming is involved in the response to heat acclimation; however, whether the long-term effects of EHS are mediated by epigenetic reprogramming is unknown. In female mice, we observed DNA methylation reprogramming in bone marrow-derived (BMD) monocytes as early as 4 days of recovery from EHS and as late as 30 days compared with sham exercise controls. Whole blood, collected after 30 days of recovery from EHS, exhibited an immunosuppressive phenotype when challenged in vitro by lipopolysaccharide. After 30 days of recovery from EHS, BMD monocytes exhibited an altered in vitro heat shock response. The location of differentially methylated CpGs are predictive of both the immunosuppressive phenotype and altered heat shock responses. ABSTRACT Exposure to exertional heat stroke (EHS) has been linked to increased susceptibility to a second heat stroke, infection and cardiovascular disease. Whether these clinical outcomes are mediated by an epigenetic memory is unknown. Using a preclinical mouse model of EHS, we investigated whether EHS exposure produces a lasting epigenetic memory in monocytes and whether there are phenotypic alterations that may be consistent with these epigenetic changes. Female mice underwent forced wheel running at 37.5°C/40% relative humidity until symptom limitation, characterized by CNS dysfunction. Results were compared with matched exercise controls at 22.5°C. Monocytes were isolated from bone marrow after 4 or 30 days of recovery to extract DNA and analyse methylation. Broad-ranging alterations to the DNA methylome were observed at both time points. At 30 days, very specific alterations were observed to the promoter regions of genes involved with immune responsiveness. To test whether these changes might be related to phenotype, whole blood at 30 days was challenged with lipopolysaccharide (LPS) to measure cytokine secretion; monocytes were also challenged with heat shock to quantify mRNA expression. Whole blood collected from EHS mice showed markedly attenuated inflammatory responses to LPS challenge. Furthermore, monocyte mRNA from EHS mice showed significantly altered responses to heat shock challenge. These results demonstrate that EHS leads to a unique DNA methylation pattern in monocytes and altered immune and heat shock responsiveness after 30 days. These data support the hypothesis that EHS exposure can induce long-term physiological changes that may be linked to altered epigenetic profiles.
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Affiliation(s)
- Kevin O Murray
- Department of Applied Physiology and Kinesiology, College of Health and Human Performance, University of Florida, Gainesville, FL, USA
| | - Jason O Brant
- Department of Pathology, Immunology and Laboratory Medicine, University of Florida, Gainesville, FL, USA
| | - John D Iwaniec
- Department of Applied Physiology and Kinesiology, College of Health and Human Performance, University of Florida, Gainesville, FL, USA
| | - Laila H Sheikh
- Department of Applied Physiology and Kinesiology, College of Health and Human Performance, University of Florida, Gainesville, FL, USA
| | - Lucas de Carvalho
- Department of Applied Physiology and Kinesiology, College of Health and Human Performance, University of Florida, Gainesville, FL, USA
| | - Christian K Garcia
- Department of Applied Physiology and Kinesiology, College of Health and Human Performance, University of Florida, Gainesville, FL, USA
| | - Gerard P Robinson
- Department of Applied Physiology and Kinesiology, College of Health and Human Performance, University of Florida, Gainesville, FL, USA
| | - Jamal M Alzahrani
- Department of Applied Physiology and Kinesiology, College of Health and Human Performance, University of Florida, Gainesville, FL, USA
| | - Alberto Riva
- Bioinformatics Core, Interdisciplinary Center for Biotechnology Research, University of Florida, Gainesville, FL, USA
| | - Orlando Laitano
- Department of Applied Physiology and Kinesiology, College of Health and Human Performance, University of Florida, Gainesville, FL, USA
| | - Michael P Kladde
- Department of Biochemistry and Molecular Biology, College of Medicine, University of Florida, Gainesville, FL, USA
| | - Thomas L Clanton
- Department of Applied Physiology and Kinesiology, College of Health and Human Performance, University of Florida, Gainesville, FL, USA
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78
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Egea G, Jiménez-Altayó F, Campuzano V. Reactive Oxygen Species and Oxidative Stress in the Pathogenesis and Progression of Genetic Diseases of the Connective Tissue. Antioxidants (Basel) 2020; 9:antiox9101013. [PMID: 33086603 PMCID: PMC7603119 DOI: 10.3390/antiox9101013] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Revised: 10/14/2020] [Accepted: 10/14/2020] [Indexed: 12/18/2022] Open
Abstract
Connective tissue is known to provide structural and functional “glue” properties to other tissues. It contains cellular and molecular components that are arranged in several dynamic organizations. Connective tissue is the focus of numerous genetic and nongenetic diseases. Genetic diseases of the connective tissue are minority or rare, but no less important than the nongenetic diseases. Here we review the impact of reactive oxygen species (ROS) and oxidative stress on the onset and/or progression of diseases that directly affect connective tissue and have a genetic origin. It is important to consider that ROS and oxidative stress are not synonymous, although they are often closely linked. In a normal range, ROS have a relevant physiological role, whose levels result from a fine balance between ROS producers and ROS scavenge enzymatic systems. However, pathology arises or worsens when such balance is lost, like when ROS production is abnormally and constantly high and/or when ROS scavenge (enzymatic) systems are impaired. These concepts apply to numerous diseases, and connective tissue is no exception. We have organized this review around the two basic structural molecular components of connective tissue: The ground substance and fibers (collagen and elastic fibers).
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Affiliation(s)
- Gustavo Egea
- Department of Biomedical Science, University of Barcelona School of Medicine and Health Sciences, 08036 Barcelona, Spain;
- Institut d’Investigacions Biomédiques August Pi i Sunyer (IDIBAPS), University of Barcelona, 08036 Barcelona, Spain
- Institut de Nanociencies I Nanotecnologia (IN2UB), University of Barcelona, 08028 Barcelona, Spain
- Correspondence: ; Tel.: +34-934-021-909
| | - Francesc Jiménez-Altayó
- Departament of Pharmacology, Therapeutics, and Toxicology, Neuroscience Institute, Autonomous University of Barcelona, 08193 Barcelona, Spain;
| | - Victoria Campuzano
- Department of Biomedical Science, University of Barcelona School of Medicine and Health Sciences, 08036 Barcelona, Spain;
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79
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Apostolova E, Lukova P, Baldzhieva A, Katsarov P, Nikolova M, Iliev I, Peychev L, Trica B, Oancea F, Delattre C, Kokova V. Immunomodulatory and Anti-Inflammatory Effects of Fucoidan: A Review. Polymers (Basel) 2020; 12:polym12102338. [PMID: 33066186 PMCID: PMC7602053 DOI: 10.3390/polym12102338] [Citation(s) in RCA: 100] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Revised: 10/10/2020] [Accepted: 10/11/2020] [Indexed: 02/06/2023] Open
Abstract
Inflammation is the initial response of the immune system to potentially harmful stimuli (e.g., injury, stress, and infections). The process involves activation of macrophages and neutrophils, which produce mediators, such as nitric oxide (NO), prostaglandin E2 (PGE2), pro-inflammatory and anti-inflammatory cytokines. The pro-inflammatory cytokines interleukin-1β (IL-1β), interleukin 6 (IL-6), and tumor necrosis factor-α (TNF-α) are considered as biomarkers of inflammation. Even though it occurs as a physiological defense mechanism, its involvement in the pathogenesis of various diseases is reported. Rheumatoid arthritis, inflammatory bowel disease, Alzheimer's disease, and cardiovascular diseases are only a part of the diseases, in which pathogenesis the chronic inflammation is involved. Fucoidans are complex polysaccharides from brown seaweeds and some marine invertebrates, composed mainly of L-fucose and sulfate ester groups and minor amounts of neutral monosaccharides and uronic acids. Algae-derived fucoidans are studied intensively during the last years regarding their multiple biological activities and possible therapeutic potential. However, the source, species, molecular weight, composition, and structure of the polysaccharides, as well as the route of administration of fucoidans, could be crucial for their effects. Fucoidan is reported to act on different stages of the inflammatory process: (i) blocking of lymphocyte adhesion and invasion, (ii) inhibition of multiple enzymes, and (iii) induction of apoptosis. In this review, we focused on the immunemodulating and anti-inflammatory effects of fucoidans derived from macroalgae and the models used for their evaluation. Additional insights on the molecular structure of the compound are included.
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Affiliation(s)
- Elisaveta Apostolova
- Department of Pharmacology and Drug Toxicology, Faculty of Pharmacy, Medical University-Plovdiv, Vasil Aprilov Str. 15A, 4002 Plovdiv, Bulgaria; (E.A.); (L.P.); (V.K.)
| | - Paolina Lukova
- Department of Pharmacognosy and Pharmaceutical Chemistry, Faculty of Pharmacy, Medical University-Plovdiv, Vasil Aprilov Str. 15A, 4002 Plovdiv, Bulgaria
- Correspondence: ; Tel.: +359-884978727
| | - Alexandra Baldzhieva
- Department of Microbiology and Immunology, Faculty of Pharmacy, Medical University-Plovdiv, Vasil Aprilov Str. 15A, 4002 Plovdiv, Bulgaria;
- Research Institute at Medical University-Plovdiv, Vasil Aprilov Str. 15A, 4002 Plovdiv, Bulgaria;
| | - Plamen Katsarov
- Research Institute at Medical University-Plovdiv, Vasil Aprilov Str. 15A, 4002 Plovdiv, Bulgaria;
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, Medical University-Plovdiv, Vasil Aprilov Str. 15A, 4002 Plovdiv, Bulgaria
| | - Mariana Nikolova
- Department of Biochemistry and Microbiology, Faculty of Biology, Plovdiv University Paisii Hilendarski, Tsar Asen Str. 24, 4000 Plovdiv, Bulgaria; (M.N.); (I.I.)
| | - Ilia Iliev
- Department of Biochemistry and Microbiology, Faculty of Biology, Plovdiv University Paisii Hilendarski, Tsar Asen Str. 24, 4000 Plovdiv, Bulgaria; (M.N.); (I.I.)
| | - Lyudmil Peychev
- Department of Pharmacology and Drug Toxicology, Faculty of Pharmacy, Medical University-Plovdiv, Vasil Aprilov Str. 15A, 4002 Plovdiv, Bulgaria; (E.A.); (L.P.); (V.K.)
| | - Bogdan Trica
- Department of Bioresources, National Institute for Research & Development in Chemistry and Petrochemistry-ICECHIM Bucharest, Splaiul Independenței 202, 060021 Bucharest, Romania; (B.T.); (F.O.)
| | - Florin Oancea
- Department of Bioresources, National Institute for Research & Development in Chemistry and Petrochemistry-ICECHIM Bucharest, Splaiul Independenței 202, 060021 Bucharest, Romania; (B.T.); (F.O.)
| | - Cédric Delattre
- CNRS, SIGMA Clermont, Institut Pascal, Université Clermont Auvergne, F-63000 Clermont-Ferrand, France;
- Institut Universitaire de France (IUF), 1 rue Descartes, 75005 Paris, France
| | - Vesela Kokova
- Department of Pharmacology and Drug Toxicology, Faculty of Pharmacy, Medical University-Plovdiv, Vasil Aprilov Str. 15A, 4002 Plovdiv, Bulgaria; (E.A.); (L.P.); (V.K.)
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80
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Cecchini R, Cecchini AL. SARS-CoV-2 infection pathogenesis is related to oxidative stress as a response to aggression. Med Hypotheses 2020; 143:110102. [PMID: 32721799 PMCID: PMC7357498 DOI: 10.1016/j.mehy.2020.110102] [Citation(s) in RCA: 229] [Impact Index Per Article: 57.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Revised: 07/04/2020] [Accepted: 07/10/2020] [Indexed: 12/11/2022]
Abstract
Since the WHO declared COVID-19 a pandemic, a great effort has been made to understand this serious disease. Thousands of studies are being devoted to understanding its epidemiology, its molecular characteristics, its mechanisms, and the clinical evolution of this viral infection. However, little has been published on its pathogenesis and the host response mechanisms in the progress of the disease. Therefore, we propose a hypothesis based on strong scientific documentation, associating oxidative stress with changes found in patients with COVID-19, such as its participation in the amplification and perpetuation of the cytokine storm, coagulopathy, and cell hypoxia. Finally, we suggest a therapeutic strategy to reduce oxidative stress using antioxidants, NF-κB inhibitors, Nrf2 activators, and iron complexing agents. We believe that this hypothesis can guide new studies and therapeutic strategies on this topic.
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Affiliation(s)
- Rubens Cecchini
- Laboratory of Pathophysiology and Free Radicals, Department of Pathological Sciences, State University of Londrina, UEL, Londrina, PR, Brazil
| | - Alessandra Lourenço Cecchini
- Laboratory of Molecular Pathology, Department of Pathological Sciences, State University of Londrina, UEL, Londrina, PR, Brazil.
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81
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Diaz JE, Ahsen ME, Schaffter T, Chen X, Realubit RB, Karan C, Califano A, Losic B, Stolovitzky G. The transcriptomic response of cells to a drug combination is more than the sum of the responses to the monotherapies. eLife 2020; 9:52707. [PMID: 32945258 PMCID: PMC7546737 DOI: 10.7554/elife.52707] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2019] [Accepted: 08/17/2020] [Indexed: 12/13/2022] Open
Abstract
Our ability to discover effective drug combinations is limited, in part by insufficient understanding of how the transcriptional response of two monotherapies results in that of their combination. We analyzed matched time course RNAseq profiling of cells treated with single drugs and their combinations and found that the transcriptional signature of the synergistic combination was unique relative to that of either constituent monotherapy. The sequential activation of transcription factors in time in the gene regulatory network was implicated. The nature of this transcriptional cascade suggests that drug synergy may ensue when the transcriptional responses elicited by two unrelated individual drugs are correlated. We used these results as the basis of a simple prediction algorithm attaining an AUROC of 0.77 in the prediction of synergistic drug combinations in an independent dataset.
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Affiliation(s)
- Jennifer El Diaz
- Department of Genetics and Genomics Sciences, Icahn School of Medicine at Mount Sinai, New York, United States.,Department of Cell, Developmental, and Regenerative Biology, Icahn School of Medicine at Mount Sinai, New York, United States.,IBM Computational Biology Center, IBM Research, Yorktown Heights, United States
| | - Mehmet Eren Ahsen
- Department of Genetics and Genomics Sciences, Icahn School of Medicine at Mount Sinai, New York, United States.,IBM Computational Biology Center, IBM Research, Yorktown Heights, United States.,Department of Business Administration, University of Illinois at Urbana-Champaign, Champaign, United States
| | - Thomas Schaffter
- Department of Genetics and Genomics Sciences, Icahn School of Medicine at Mount Sinai, New York, United States.,IBM Computational Biology Center, IBM Research, Yorktown Heights, United States
| | - Xintong Chen
- Department of Genetics and Genomics Sciences, Icahn School of Medicine at Mount Sinai, New York, United States
| | - Ronald B Realubit
- Department of Systems Biology, Columbia University, New York, United States.,Sulzberger Columbia Genome Center, High Throughput Screening Facility, Columbia University Medical Center, New York, United States
| | - Charles Karan
- Department of Systems Biology, Columbia University, New York, United States.,Sulzberger Columbia Genome Center, High Throughput Screening Facility, Columbia University Medical Center, New York, United States
| | - Andrea Califano
- Department of Systems Biology, Columbia University, New York, United States.,Department of Biomedical Informatics, Columbia University, New York, United States.,Department of Biochemistry and Molecular Biophysics, Columbia University, New York, United States.,Department of Medicine, Columbia University, New York, United States
| | - Bojan Losic
- Department of Genetics and Genomics Sciences, Icahn School of Medicine at Mount Sinai, New York, United States.,Tisch Cancer Institute, Cancer Immunology, Icahn School of Medicine at Mount Sinai, New York, United States.,Diabetes, Obesity and Metabolism Institute, Icahn School of Medicine at Mount Sinai, New York, United States.,Icahn Institute for Data Science and Genomic Technology, Icahn School of Medicine at Mount Sinai, New York, United States
| | - Gustavo Stolovitzky
- Department of Genetics and Genomics Sciences, Icahn School of Medicine at Mount Sinai, New York, United States.,IBM Computational Biology Center, IBM Research, Yorktown Heights, United States.,Department of Systems Biology, Columbia University, New York, United States.,Department of Biomedical Informatics, Columbia University, New York, United States
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82
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Melgar K, Walker MM, Jones LM, Bolanos LC, Hueneman K, Wunderlich M, Jiang JK, Wilson KM, Zhang X, Sutter P, Wang A, Xu X, Choi K, Tawa G, Lorimer D, Abendroth J, O'Brien E, Hoyt SB, Berman E, Famulare CA, Mulloy JC, Levine RL, Perentesis JP, Thomas CJ, Starczynowski DT. Overcoming adaptive therapy resistance in AML by targeting immune response pathways. Sci Transl Med 2020; 11:11/508/eaaw8828. [PMID: 31484791 DOI: 10.1126/scitranslmed.aaw8828] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2019] [Accepted: 07/24/2019] [Indexed: 12/17/2022]
Abstract
Targeted inhibitors to oncogenic kinases demonstrate encouraging clinical responses early in the treatment course; however, most patients will relapse because of target-dependent mechanisms that mitigate enzyme-inhibitor binding or through target-independent mechanisms, such as alternate activation of survival and proliferation pathways, known as adaptive resistance. Here, we describe mechanisms of adaptive resistance in FMS-like receptor tyrosine kinase (FLT3)-mutant acute myeloid leukemia (AML) by examining integrative in-cell kinase and gene regulatory network responses after oncogenic signaling blockade by FLT3 inhibitors (FLT3i). We identified activation of innate immune stress response pathways after treatment of FLT3-mutant AML cells with FLT3i and showed that innate immune pathway activation via the interleukin-1 receptor-associated kinase 1 and 4 (IRAK1/4) complex contributes to adaptive resistance in FLT3-mutant AML cells. To overcome this adaptive resistance mechanism, we developed a small molecule that simultaneously inhibits FLT3 and IRAK1/4 kinases. The multikinase FLT3-IRAK1/4 inhibitor eliminated adaptively resistant FLT3-mutant AML cells in vitro and in vivo and displayed superior efficacy as compared to current targeted FLT3 therapies. These findings uncover a polypharmacologic strategy for overcoming adaptive resistance to therapy in AML by targeting immune stress response pathways.
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Affiliation(s)
- Katelyn Melgar
- Division of Experimental Hematology and Cancer Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229, USA.,Immunology Graduate Program, Cincinnati Children's Hospital Medical Center and the University of Cincinnati College of Medicine, Cincinnati, OH 45229, USA
| | - Morgan M Walker
- Division of Preclinical Innovation, National Center for Advancing Translational Sciences, National Institutes of Health, Bethesda, MD 20892, USA
| | | | - Lyndsey C Bolanos
- Division of Experimental Hematology and Cancer Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229, USA
| | - Kathleen Hueneman
- Division of Experimental Hematology and Cancer Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229, USA
| | - Mark Wunderlich
- Division of Experimental Hematology and Cancer Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229, USA
| | - Jian-Kang Jiang
- Division of Preclinical Innovation, National Center for Advancing Translational Sciences, National Institutes of Health, Bethesda, MD 20892, USA
| | - Kelli M Wilson
- Division of Preclinical Innovation, National Center for Advancing Translational Sciences, National Institutes of Health, Bethesda, MD 20892, USA
| | - Xiaohu Zhang
- Division of Preclinical Innovation, National Center for Advancing Translational Sciences, National Institutes of Health, Bethesda, MD 20892, USA
| | - Patrick Sutter
- Division of Preclinical Innovation, National Center for Advancing Translational Sciences, National Institutes of Health, Bethesda, MD 20892, USA
| | - Amy Wang
- Division of Preclinical Innovation, National Center for Advancing Translational Sciences, National Institutes of Health, Bethesda, MD 20892, USA
| | - Xin Xu
- Division of Preclinical Innovation, National Center for Advancing Translational Sciences, National Institutes of Health, Bethesda, MD 20892, USA
| | - Kwangmin Choi
- Division of Experimental Hematology and Cancer Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229, USA
| | - Gregory Tawa
- Division of Preclinical Innovation, National Center for Advancing Translational Sciences, National Institutes of Health, Bethesda, MD 20892, USA
| | | | | | - Eric O'Brien
- Division of Oncology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229, USA
| | - Scott B Hoyt
- Division of Preclinical Innovation, National Center for Advancing Translational Sciences, National Institutes of Health, Bethesda, MD 20892, USA
| | - Ellin Berman
- Leukemia Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | - Christopher A Famulare
- Center for Hematologic Malignancies, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | - James C Mulloy
- Division of Experimental Hematology and Cancer Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229, USA
| | - Ross L Levine
- Leukemia Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA.,Center for Hematologic Malignancies, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA.,Human Oncology and Pathogenesis Program, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | - John P Perentesis
- Division of Oncology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229, USA
| | - Craig J Thomas
- Division of Preclinical Innovation, National Center for Advancing Translational Sciences, National Institutes of Health, Bethesda, MD 20892, USA. .,Lymphoid Malignancies Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20829, USA
| | - Daniel T Starczynowski
- Division of Experimental Hematology and Cancer Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229, USA. .,Department of Cancer Biology, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA
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83
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Zheng W, Liu B, Hu W, Cui Y. Effects of transport stress on pathological injury and main heat shock protein expression in the respiratory system of goats. J Anim Physiol Anim Nutr (Berl) 2020; 105:1-13. [PMID: 32744367 DOI: 10.1111/jpn.13430] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Revised: 06/01/2020] [Accepted: 06/18/2020] [Indexed: 12/29/2022]
Abstract
The aim of the present study was to investigate the pathological injury and the expression of heat shock proteins in the caprine lung, trachea and bronchus under transport stress. 12 healthy male goats were selected and randomly divided into three groups. The control group (non-transported group), 2 hr transport-treated group and 6 hr transport-treated group. Morphological changes as well as the expression of heat shock proteins (HSPs, mainly HSP27, HSP70 and HSP90) in three parts of the respiratory tract were examined. Our results showed swollen mucosa and congestive blood vessels in mucous layer and submucosa, inflammatory cell infiltration as well as degeneration and necrosis of mucosal epithelial cells in trachea and bronchus of the transport-treated groups. The epithelial cells were degenerated, and the exfoliated cells and debris could be seen in the alveolar cavity. The results of immunohistochemistry showed that HSP27 and HSP70 were strongly expressed in tracheal and bronchial epithelium, glandular epithelium, vascular endothelium and bronchiole epithelium. And the amount of positive inflammatory cells was increased in transport-treated groups. Western blot results indicated that the expression of all three proteins had no obvious difference among the three groups in bronchi (p > .05). In trachea, there was no significant difference in the expression of heat shock proteins among the three groups except that the expression of HSP70 which was obviously higher in the two transported groups than the control group (p < .05). The expression level of HSP70 in the 2 hr transport-treated group was significantly higher than the 6 hr group (p < .05) and control groups (p < .05). However, there was no significant difference in the expression level of HSP27 and HSP90 in three groups (p > .05). In conclusion, our data showed that transport stress could damage the caprine respiratory system.
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Affiliation(s)
- Wenya Zheng
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou, China.,College of Life Science and Resources and Environment, Yichun University, Yichun, China
| | - Ben Liu
- College of Life Science and Resources and Environment, Yichun University, Yichun, China.,Jiangxi Lvke Agriculture and Animal Husbandry Technology Co. Ltd, Yichun, China
| | - Wei Hu
- College of Life Science and Resources and Environment, Yichun University, Yichun, China
| | - Yan Cui
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou, China
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84
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Harnessing the Proteostasis Network in Alcohol-associated Liver Disease. CURRENT PATHOBIOLOGY REPORTS 2020. [DOI: 10.1007/s40139-020-00211-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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85
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Martinez MN, Greene J, Kenna L, Kissell L, Kuhn M. The Impact of Infection and Inflammation on Drug Metabolism, Active Transport, and Systemic Drug Concentrations in Veterinary Species. Drug Metab Dispos 2020; 48:631-644. [PMID: 32503881 DOI: 10.1124/dmd.120.090704] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Accepted: 05/27/2020] [Indexed: 12/19/2022] Open
Abstract
Within human medicine, it is recognized that the pharmacokinetics (PK) of many compounds can be altered by the presence of inflammation or infection. Research into the reason for these changes has identified pathways that can influence drug absorption, clearance, and tissue distribution. In contrast, far less is known about these relationships within the framework of veterinary medicine. Rather, most of the PK data generated in veterinary species employs healthy subjects, raising the question of whether these studies are founded on an assumption that healthy animal PK reflect that of the diseased animal population. Accordingly, there is a need to explore the PK changes that might be overlooked in studies that recruit only healthy animals to assesses drug PK. To meet this objective, we surveyed the published literature for studies focusing on the impact of disease on the dose-exposure relationships in food-producing and companion animal species. We found that, consistent with humans and laboratory species, both up- and downregulation of the various cytochrome isoenzymes and/or transporters have occurred in response to an increase in inflammatory mediators. These findings suggest that, as observed in human medicine, the potential for differences in the drug PK in healthy versus animal patients points to a need for acquiring a greater understanding of these changes and how they may influence the dose-exposure-response relationships of veterinary pharmaceuticals. SIGNIFICANCE STATEMENT: This review delivers a much-needed summary of published information that provides insights into how disease and inflammation can influence the appropriateness of extrapolating laboratory-based dose-exposure-response relationships to what will occur in the actual veterinary patient. As part of this review, we also examine some of the method-associated issues to be considered when assessing the reported nature and magnitude of these changes.
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Affiliation(s)
- Marilyn N Martinez
- Office of New Animal Drug Evaluation, Center for Veterinary Medicine, Rockville, Maryland (M.N.M., J.G., L.Ke., L.Ki.) and Department of Large Animal Clinical Sciences, Michigan State University College of Veterinary Medicine, East Lansing, Michigan (M.K.)
| | - Jonathan Greene
- Office of New Animal Drug Evaluation, Center for Veterinary Medicine, Rockville, Maryland (M.N.M., J.G., L.Ke., L.Ki.) and Department of Large Animal Clinical Sciences, Michigan State University College of Veterinary Medicine, East Lansing, Michigan (M.K.)
| | - Leslie Kenna
- Office of New Animal Drug Evaluation, Center for Veterinary Medicine, Rockville, Maryland (M.N.M., J.G., L.Ke., L.Ki.) and Department of Large Animal Clinical Sciences, Michigan State University College of Veterinary Medicine, East Lansing, Michigan (M.K.)
| | - Lindsey Kissell
- Office of New Animal Drug Evaluation, Center for Veterinary Medicine, Rockville, Maryland (M.N.M., J.G., L.Ke., L.Ki.) and Department of Large Animal Clinical Sciences, Michigan State University College of Veterinary Medicine, East Lansing, Michigan (M.K.)
| | - Matt Kuhn
- Office of New Animal Drug Evaluation, Center for Veterinary Medicine, Rockville, Maryland (M.N.M., J.G., L.Ke., L.Ki.) and Department of Large Animal Clinical Sciences, Michigan State University College of Veterinary Medicine, East Lansing, Michigan (M.K.)
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86
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Gong L, Yu L, Gong X, Wang C, Hu N, Dai X, Peng C, Li Y. Exploration of anti-inflammatory mechanism of forsythiaside A and forsythiaside B in CuSO 4-induced inflammation in zebrafish by metabolomic and proteomic analyses. J Neuroinflammation 2020; 17:173. [PMID: 32493433 PMCID: PMC7271515 DOI: 10.1186/s12974-020-01855-9] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2019] [Accepted: 05/25/2020] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Inflammation is a general pathological phenomenon during severe disturbances to the homeostasis. Forsythiaside A (FA) and forsythiaside B (FB), isolated from the dried fruit of Forsythia suspensa (Thunb.) Vahl, are phenylethanoid compounds that show a significant anti-inflammatory effect. However, the properties and therapeutic mechanisms of this effect have not yet been systematically elucidated. METHODS In this study, the anti-inflammatory effects of FA and FB were investigated in CuSO4-induced inflammation in zebrafish larvae. Intracellular generation of reactive oxygen species (ROS) and nitric oxide (NO) was investigated using fluorescence probes. Metabolomic and proteomic analyses using liquid chromatography-mass spectrometry were carried out to identify the expressions of metabolites and proteins associated with the anti-inflammatory mechanism of FA and FB. Quantitative polymerase chain reaction (PCR) was performed to detect the progressive changes in gene expression. RESULTS FA and FB inhibited neutrophils migration to the damaged neuromasts and remarkably reduced CuSO4-induced ROS and NO generation in zebrafish larvae. Metabolomic analysis pointed to the involvement of nicotinate and nicotinamide metabolism, energy metabolism, pyrimidine metabolism, and purine metabolism. Proteomic analysis identified 146 differentially expressed proteins between the control and model groups. These included collagen [collagen type II alpha 1b precursor (col2a1b), collagen alpha-2(IX) chain precursor (col9a2), collagen type IX alpha I precursor (col9a1b)], nucleoside diphosphate kinase 3 isoform X1 (Nme3), WD repeat-containing protein 3 (Wdr3), and 28S ribosomal protein S7 mitochondrial precursor (Mrps7). FA and FB were shown to reverse the abnormal expressions of potential metabolite and protein biomarkers and alleviate CuSO4-induced damage to the neuromasts in the zebrafish lateral line. CONCLUSIONS Our results indicate that FA and FB possess remarkable anti-inflammatory properties, protecting against CuSO4-induced neuromasts damage in zebrafish larvae. The results also suggest a multi-component and multi-regulatory therapeutic mechanism for FA and FB.
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Affiliation(s)
- Lihong Gong
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Key Laboratory of Standardization for Chinese Herbal Medicine, Ministry of Education, National Key Laboratory Breeding Base of Systematic Research, Development and Utilization of Chinese Medicine Resources, Chengdu, 611137, China
| | - Linyuan Yu
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Key Laboratory of Standardization for Chinese Herbal Medicine, Ministry of Education, National Key Laboratory Breeding Base of Systematic Research, Development and Utilization of Chinese Medicine Resources, Chengdu, 611137, China
| | - Xiaohong Gong
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Key Laboratory of Standardization for Chinese Herbal Medicine, Ministry of Education, National Key Laboratory Breeding Base of Systematic Research, Development and Utilization of Chinese Medicine Resources, Chengdu, 611137, China
| | - Cheng Wang
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Key Laboratory of Standardization for Chinese Herbal Medicine, Ministry of Education, National Key Laboratory Breeding Base of Systematic Research, Development and Utilization of Chinese Medicine Resources, Chengdu, 611137, China
| | - Naihua Hu
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Key Laboratory of Standardization for Chinese Herbal Medicine, Ministry of Education, National Key Laboratory Breeding Base of Systematic Research, Development and Utilization of Chinese Medicine Resources, Chengdu, 611137, China
| | - Xuyang Dai
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Key Laboratory of Standardization for Chinese Herbal Medicine, Ministry of Education, National Key Laboratory Breeding Base of Systematic Research, Development and Utilization of Chinese Medicine Resources, Chengdu, 611137, China
| | - Cheng Peng
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Key Laboratory of Standardization for Chinese Herbal Medicine, Ministry of Education, National Key Laboratory Breeding Base of Systematic Research, Development and Utilization of Chinese Medicine Resources, Chengdu, 611137, China.
| | - Yunxia Li
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Key Laboratory of Standardization for Chinese Herbal Medicine, Ministry of Education, National Key Laboratory Breeding Base of Systematic Research, Development and Utilization of Chinese Medicine Resources, Chengdu, 611137, China.
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87
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Klein Y, Fleissig O, Polak D, Barenholz Y, Mandelboim O, Chaushu S. Immunorthodontics: in vivo gene expression of orthodontic tooth movement. Sci Rep 2020; 10:8172. [PMID: 32424121 PMCID: PMC7235241 DOI: 10.1038/s41598-020-65089-8] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2019] [Accepted: 04/15/2020] [Indexed: 02/04/2023] Open
Abstract
Orthodontic tooth movement (OTM) is a “sterile” inflammatory process. The present study aimed to reveal the underlying biological mechanisms, by studying the force associated-gene expression changes, in a time-dependent manner. Ni-Ti springs were set to move the upper 1st-molar in C57BL/6 mice. OTM was measured by μCT. Total-RNA was extracted from tissue blocks at 1,3,7 and 14-days post force application, and from two control groups: naïve and inactivated spring. Gene-expression profiles were generated by next-generation-RNA-sequencing. Gene Set Enrichment Analysis, K-means algorithm and Ingenuity pathway analysis were used for data interpretation. Genes of interest were validated with qRT-PCR. A total of 3075 differentially expressed genes (DEGs) were identified, with the greatest number at day 3. Two distinct clusters patterns were recognized: those in which DEGs peaked in the first days and declined thereafter (tissue degradation, phagocytosis, leukocyte extravasation, innate and adaptive immune system responses), and those in which DEGs were initially down-regulated and increased at day 14 (cell proliferation and migration, cytoskeletal rearrangement, tissue homeostasis, angiogenesis). The uncovering of novel innate and adaptive immune processes in OTM led us to propose a new term “Immunorthodontics”. This genomic data can serve as a platform for OTM modulation future approaches.
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Affiliation(s)
- Yehuda Klein
- Institute of Dental Sciences, Faculty of Dental Medicine, The Hebrew University and Hadassah Medical Center, Jerusalem, Israel.,Department of Orthodontics, Faculty of Dental Medicine, The Hebrew University and Hadassah Medical Center, Jerusalem, Israel.,Department of Biochemistry, Institute for Medical Research Israel-Canada, Hebrew University and Hadassah Medical Center, Jerusalem, Israel
| | - Omer Fleissig
- Department of Orthodontics, Faculty of Dental Medicine, The Hebrew University and Hadassah Medical Center, Jerusalem, Israel. .,Lautenberg Center for Cancer Immunology, Faculty of Medicine, The Hebrew University and Hadassah Medical Center, Jerusalem, Israel.
| | - David Polak
- Department of Periodontics, Faculty of Dental Medicine, The Hebrew University and Hadassah Medical Center, Jerusalem, Israel
| | - Yechezkel Barenholz
- Department of Biochemistry, Institute for Medical Research Israel-Canada, Hebrew University and Hadassah Medical Center, Jerusalem, Israel
| | - Ofer Mandelboim
- Lautenberg Center for Cancer Immunology, Faculty of Medicine, The Hebrew University and Hadassah Medical Center, Jerusalem, Israel
| | - Stella Chaushu
- Department of Orthodontics, Faculty of Dental Medicine, The Hebrew University and Hadassah Medical Center, Jerusalem, Israel
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88
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Glencross DA, Ho TR, Camiña N, Hawrylowicz CM, Pfeffer PE. Air pollution and its effects on the immune system. Free Radic Biol Med 2020; 151:56-68. [PMID: 32007522 DOI: 10.1016/j.freeradbiomed.2020.01.179] [Citation(s) in RCA: 269] [Impact Index Per Article: 67.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Revised: 01/21/2020] [Accepted: 01/22/2020] [Indexed: 12/22/2022]
Abstract
A well-functioning immune system is vital for a healthy body. Inadequate and excessive immune responses underlie diverse pathologies such as serious infections, metastatic malignancies and auto-immune conditions. Therefore, understanding the effects of ambient pollutants on the immune system is vital to understanding how pollution causes disease, and how that pathology could be abrogated. The immune system itself consists of multiple types of immune cell that act together to generate (or fail to generate) immune responses and in this article we review evidence of how air pollutants can affect different immune cell types such as particle-clearing macrophages, inflammatory neutrophils, dendritic cells that orchestrate adaptive immune responses and lymphocytes that enact those responses. Common themes that emerge are of the capacity of air pollutants to stimulate pro-inflammatory immune responses across multiple classes of immune cell. Air pollution can enhance T helper lymphocyte type 2 (Th2) and T helper lymphocyte type 17 (Th17) adaptive immune responses, as seen in allergy and asthma, and dysregulate anti-viral immune responses. The clinical effects of air pollution, in particular the known association between elevated ambient pollution and exacerbations of asthma and chronic obstructive pulmonary disease (COPD), are consistent with these identified immunological mechanisms. Further to this, as inhaled air pollution deposits primarily on the respiratory mucosa this review focuses on mechanisms of respiratory disease. However, as discussed in the article, air pollution also affects the wider immune system for example in the neonate and gastrointestinal tract. Whilst the many identified actions of air pollution on the immune system are notably diverse, immunological research does suggest potential strategies to ameliorate such effects, for example with vitamin D supplementation. An in-depth understanding of the immunological effects of ambient pollutants should hopefully yield new ideas on how to reduce the adverse health effects of air pollution.
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Affiliation(s)
- Drew A Glencross
- Asthma UK Centre in Allergic Mechanisms of Asthma, King's College London, Guy's Hospital, London, SE1 9RT, UK; MRC Centre for Environment and Health, King's College London, Franklin Wilkins Building, London, SE1 9NH, UK
| | - Tzer-Ren Ho
- Asthma UK Centre in Allergic Mechanisms of Asthma, King's College London, Guy's Hospital, London, SE1 9RT, UK; MRC Centre for Environment and Health, King's College London, Franklin Wilkins Building, London, SE1 9NH, UK
| | - Nuria Camiña
- MRC Centre for Environment and Health, King's College London, Franklin Wilkins Building, London, SE1 9NH, UK
| | - Catherine M Hawrylowicz
- Asthma UK Centre in Allergic Mechanisms of Asthma, King's College London, Guy's Hospital, London, SE1 9RT, UK.
| | - Paul E Pfeffer
- Barts and the London School of Medicine and Dentistry, Queen Mary University of London, Charterhouse Square, London, EC1M 6BQ, UK
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89
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Gifford JJ, Norton SA, Kusnecov AW, Wagner GC. Valproic acid induces nuclear factor erythroid 2-related factor 2 expression in fetal and neonatal brains but not in adult brain: evidence of the gamma-aminobutyric acid-shift hypothesis. Neuroreport 2020; 31:433-436. [PMID: 32168103 DOI: 10.1097/wnr.0000000000001421] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The gamma-aminobutyric acid (GABA)-shift hypothesis proposes that GABA agonist action is excitatory early in development and transitions to an inhibitory role later in life. In experiment 1, the nonspecific GABA agonist, valproic acid (VPA), was administered to pregnant C57BL/6 mice on embryonic day 13. Fetal and maternal brains were harvested 2 h post-VPA exposure and assayed for nuclear factor erythroid 2-related factor 2 (NRF2) and H3 expression through western blot analysis. In experiment 2, VPA was administered to neonatal pups on P14 and adult mice on P60. In both experiments, it was observed that NRF2 expression was increased in fetal and neonatal brains, but not in the adult brain. Because NRF2 expression is activated by oxidative stress, these results imply support of the GABA-shift hypothesis in that VPA may exert its developmental damage in the fetal and neonatal periods through excitotoxicity.
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Affiliation(s)
- Janace J Gifford
- Psychology, Rutgers University, 152 Frelinghuysen Road, New Brunswick, New Jersey, USA
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90
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Li Y, Li S, Xia Y, Li X, Chen T, Yan J, Wang Y. Alteration of liver immunity by increasing inflammatory response during co-administration of methamphetamine and atazanavir. Immunopharmacol Immunotoxicol 2020; 42:237-245. [PMID: 32249638 DOI: 10.1080/08923973.2020.1745829] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
Objective: Use of methamphetamine (METH) is prevalent among HIV-infected individuals. Previous research has shown that both METH and HIV protease inhibitors exert influences on mitochondrial respiratory metabolism and hepatic nervous system. This study aims to study the joint effect of METH and HIV protease inhibitors on hepatic immune function.Materials and methods: Based on the differentially expressed genes obtained from RNA-seq of the liver from mouse model, the expression levels of CD48 and Macrophage Receptor with Collagenous Structure (MARCO) were examined using qRT-PCR and flow cytometry, and the expression and secretion of cytokines IL-1β, IL-6, IL-8, IL-10, IFN-γ, IFN-β, and TNF-α were determined using qRT-PCR and ELISA in THP-1-derived macrophages.Results: Our results indicated that compared with the control group, CD48 molecules were significantly down-regulated by METH-atazanavir co-treatment, and the expression level of CD48 decreased as METH concentration increases. MARCO molecules were increased, especially at larger doses of METH and atazanavir treatment. In addition, in the presence of METH-atazanavir, the expression and secretion of a series of pro-inflammatory cytokines TNF-α, IL-1β, IL-6, and IL-8 increased while the expression and secretion of anti-inflammatory cytokine IL-10 decreased.Conclusion: These results demonstrated that METH and atazanavir had a combined impact on the liver immunity, suggesting that the co-treatment could enhance inflammatory response and suppress NK cell activation via CD48.
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Affiliation(s)
- Yanfei Li
- Department of Forensic Science, School of Basic Medical Science, Central South University, Changsha, Hunan, P.R. China.,Department of Immunology, School of Basic Medical Science, Central South University, Changsha, Hunan, P.R. China
| | - Sangsang Li
- Department of Immunology, School of Basic Medical Science, Central South University, Changsha, Hunan, P.R. China
| | - Yang Xia
- Department of Forensic Science, School of Basic Medical Science, Central South University, Changsha, Hunan, P.R. China
| | - Xiangrong Li
- Department of Forensic Science, School of Basic Medical Science, Central South University, Changsha, Hunan, P.R. China
| | - Tingjun Chen
- Department of Forensic Science, School of Basic Medical Science, Central South University, Changsha, Hunan, P.R. China
| | - Jie Yan
- Department of Forensic Science, School of Basic Medical Science, Central South University, Changsha, Hunan, P.R. China
| | - Yong Wang
- Department of Forensic Science, School of Basic Medical Science, Central South University, Changsha, Hunan, P.R. China
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91
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Intratumoral Gene Electrotransfer of Plasmid DNA Encoding shRNA against Melanoma Cell Adhesion Molecule Radiosensitizes Tumors by Antivascular Effects and Activation of an Immune Response. Vaccines (Basel) 2020; 8:vaccines8010135. [PMID: 32204304 PMCID: PMC7157247 DOI: 10.3390/vaccines8010135] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Revised: 03/17/2020] [Accepted: 03/17/2020] [Indexed: 12/12/2022] Open
Abstract
In this study, radiotherapy was combined with the gene electrotransfer (GET) of plasmid encoding shRNA against melanoma cell adhesion molecule (pMCAM) with dual action, which was a vascular-targeted effect mediated by the silencing of MCAM and an immunological effect mediated by the presence of plasmid DNA in the cytosol-activating DNA sensors. The effects and underlying mechanisms of therapy were evaluated in more immunogenic B16F10 melanoma and less immunogenic TS/A carcinoma. The silencing of MCAM potentiated the effect of irradiation (IR) in both tumor models. Combined therapy resulted in 81% complete responses (CR) in melanoma and 27% CR in carcinoma. Moreover, after the secondary challenge of cured mice, 59% of mice were resistant to challenge with melanoma cells, and none were resistant to carcinoma. Combined therapy reduced the number of blood vessels; induced hypoxia, apoptosis, and necrosis; and reduced cell proliferation in both tumor models. In addition, the significant increase of infiltrating immune cells was observed in both tumor models but more so in melanoma, where the expression of IL-12 and TNF-α was determined as well. Our results indicate that the combined therapy exerts both antiangiogenic and immune responses that contribute to the antitumor effect. However, tumor immunological status is crucial for a sufficient immune system contribution to the overall antitumor effect.
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92
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Gusev EY, Zotova NV. Cellular Stress and General Pathological Processes. Curr Pharm Des 2020; 25:251-297. [PMID: 31198111 DOI: 10.2174/1381612825666190319114641] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Accepted: 03/13/2019] [Indexed: 02/06/2023]
Abstract
From the viewpoint of the general pathology, most of the human diseases are associated with a limited number of pathogenic processes such as inflammation, tumor growth, thrombosis, necrosis, fibrosis, atrophy, pathological hypertrophy, dysplasia and metaplasia. The phenomenon of chronic low-grade inflammation could be attributed to non-classical forms of inflammation, which include many neurodegenerative processes, pathological variants of insulin resistance, atherosclerosis, and other manifestations of the endothelial dysfunction. Individual and universal manifestations of cellular stress could be considered as a basic element of all these pathologies, which has both physiological and pathophysiological significance. The review examines the causes, main phenomena, developmental directions and outcomes of cellular stress using a phylogenetically conservative set of genes and their activation pathways, as well as tissue stress and its role in inflammatory and para-inflammatory processes. The main ways towards the realization of cellular stress and its functional blocks were outlined. The main stages of tissue stress and the classification of its typical manifestations, as well as its participation in the development of the classical and non-classical variants of the inflammatory process, were also described. The mechanisms of cellular and tissue stress are structured into the complex systems, which include networks that enable the exchange of information with multidirectional signaling pathways which together make these systems internally contradictory, and the result of their effects is often unpredictable. However, the possible solutions require new theoretical and methodological approaches, one of which includes the transition to integral criteria, which plausibly reflect the holistic image of these processes.
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Affiliation(s)
- Eugeny Yu Gusev
- Laboratory of the Immunology of Inflammation, Institute of Immunology and Physiology, Yekaterinburg, Russian Federation
| | - Natalia V Zotova
- Laboratory of the Immunology of Inflammation, Institute of Immunology and Physiology, Yekaterinburg, Russian Federation.,Department of Medical Biochemistry and Biophysics, Ural Federal University named after B.N.Yeltsin, Yekaterinburg, Russian Federation
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93
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Di Marco T, Bianchi F, Sfondrini L, Todoerti K, Bongarzone I, Maffioli EM, Tedeschi G, Mazzoni M, Pagliardini S, Pellegrini S, Neri A, Anania MC, Greco A. COPZ1 depletion in thyroid tumor cells triggers type I IFN response and immunogenic cell death. Cancer Lett 2020; 476:106-119. [PMID: 32061953 DOI: 10.1016/j.canlet.2020.02.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2019] [Revised: 02/07/2020] [Accepted: 02/10/2020] [Indexed: 12/23/2022]
Abstract
The coatomer protein complex zeta 1 (COPZ1) represents a non-oncogene addiction for thyroid cancer (TC); its depletion impairs the viability of thyroid tumor cells, leads to abortive autophagy, ER stress, UPR and apoptosis, and reduces tumor growth of TC xenograft models. In this study we investigated the molecular pathways activated by COPZ1 depletion and the paracrine effects on cellular microenvironment and immune response. By comprehensive and target approaches we demonstrated that COPZ1 depletion in TPC-1 and 8505C thyroid tumor cell lines activates type I IFN pathway and viral mimicry responses. The secretome from COPZ1-depleted cells was enriched for several inflammatory molecules and damage-associated molecular patterns (DAMPs). Moreover, we found that dendritic cells, exposed to these secretomes, expressed high levels of differentiation and maturation markers, and stimulated the proliferation of naïve T cells. Interestingly, T cells stimulated with COPZ1-depleted cells showed increased cytotoxic activity against parental tumor cells. Collectively, our findings support the notion that targeting COPZ1 may represent a promising therapeutic approach for TC, considering its specificity for cancer cells, the lack of effect on normal cells, and the capacity to prompt an anti-tumor immune response.
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Affiliation(s)
- Tiziana Di Marco
- Molecular Mechanisms Unit, Department of Research, Fondazione IRCCS Istituto Nazionale Dei Tumori, Via G.A. Amadeo, 42, 20133, Milan, Italy.
| | - Francesca Bianchi
- Molecular Targeting Unit, Department of Research, Fondazione IRCCS Istituto Nazionale Dei Tumori, Via G.A. Amadeo, 42, 20133, Milan, Italy.
| | - Lucia Sfondrini
- Dipartimento di Scienze Biomediche per La Salute, University of Milan, Via Mangiagalli, 31, 20133, Milan, Italy.
| | - Katia Todoerti
- Hematology Unit, Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, Via Francesco Sforza, 35, 20122, Milan, Italy.
| | - Italia Bongarzone
- Molecular Mechanisms Unit, Department of Research, Fondazione IRCCS Istituto Nazionale Dei Tumori, Via G.A. Amadeo, 42, 20133, Milan, Italy.
| | | | - Gabriella Tedeschi
- Department of Veterinary Medicine, University of Milan, Via Celoria, 10, 20133, Milan, Italy; Fondazione Filarete, Via Celoria, 10, 20133, Milan, Italy.
| | - Mara Mazzoni
- Molecular Mechanisms Unit, Department of Research, Fondazione IRCCS Istituto Nazionale Dei Tumori, Via G.A. Amadeo, 42, 20133, Milan, Italy.
| | - Sonia Pagliardini
- Molecular Mechanisms Unit, Department of Research, Fondazione IRCCS Istituto Nazionale Dei Tumori, Via G.A. Amadeo, 42, 20133, Milan, Italy.
| | - Sandra Pellegrini
- Institut Pasteur, Unit of Cytokine Signaling, Inserm U1221, 75724, Paris, France.
| | - Antonino Neri
- Hematology Unit, Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, Via Francesco Sforza, 35, 20122, Milan, Italy; Department of Oncology and Hemato-oncology, University of Milan, Italy Via Francesco Sforza, 35, 20122, Milan, Italy.
| | - Maria Chiara Anania
- Molecular Mechanisms Unit, Department of Research, Fondazione IRCCS Istituto Nazionale Dei Tumori, Via G.A. Amadeo, 42, 20133, Milan, Italy.
| | - Angela Greco
- Molecular Mechanisms Unit, Department of Research, Fondazione IRCCS Istituto Nazionale Dei Tumori, Via G.A. Amadeo, 42, 20133, Milan, Italy.
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94
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He S, Chen L, He Y, Chen F, Ma Y, Xiao D, He J. Resveratrol alleviates heat stress-induced impairment of intestinal morphology, barrier integrity and inflammation in yellow-feather broilers. ANIMAL PRODUCTION SCIENCE 2020. [DOI: 10.1071/an19218] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Context
Heat stress is one of the problems commonly found in broiler industry in tropic and subtropic regions that results in impairment of intestinal integrity, leading to inflammation and poor performance.
Aims
This study aimed to investigate the effect of dietary resveratrol supplementation on growth performance, intestinal morphology and barrier integrity, and inflammation response of yellow-feather broilers under heat stress.
Methods
In total, 288 birds (28-day-old) were randomly allotted to three treatment groups, with six replicates. A thermo-neutral group (24 ± 2°C) received a basal diet and two heat-stressed groups (37 ± 2°C for 8 h/day and 24 ± 2°C for the remaining time) were fed the basal diet (HT) or basal diet supplemented with 500 mg/kg resveratrol for 14 consecutive days.
Key results
Compared with the thermo-neutral group, birds in the HT group had a decreased (P < 0.05) average daily feed intake, average daily gain, villus height, villus height to crypt depth ratio, mRNA concentrations of mucin-2, secreted immunoglobulin A (sIgA), claudin-1,zona occludens-1 and serum concentrations of interferon γ, and increased (P < 0.05) feed to gain ratio, crypt depth, mRNA levels of expression of heat-shock protein (HSP) 70, HSP90, nuclear factor kappa B, mucin-4, claudin-2 and serum concentrations of endotoxin, interleukin (IL)-1β, IL-4, IL-6 and tumour necrosis factor (TNF)-α on Day 3 and Day 14, except for claudin-1 on Day 14 and TNF-α on Day 3 (P > 0.05). Compared with HT group, birds in HT supplemented with resveratrol group decreased (P < 0.05) crypt depth (in jejunum on Day 3, ileum on Day 14), mRNA levels of expression of HSP70, HSP90, nuclear factor kappa B, mucin-4, claudin-2 and serum concentrations of endotoxin, IL-1β, IL-4, IL-6 and TNF-α, and increased (P < 0.05) average daily feed intake (+11%), average daily gain (+22%) and villus height, villus height to crypt depth ratio, mRNA levels of expression of mucin-2, sIgA, claudin-1,zona occludens-1 and serum concentrations of interferon γ, although with few fluctuations between Day 3 and Day 14.
Conclusions
Dietary supplementation of resveratrol was effective in partially alleviating the adverse effects of heat stress on growth performance and intestinal barrier function in yellow-feather broilers, by restoring the impaired villus-crypt structure, altering the mRNA expression of intestinal HSPs, mucins, sIgA and tight junction-related gene, and inhibiting secretion of pro-inflammation cytokines.
Implications
Dietary resveratrol supplementation is a considerable nutritional strategy to anti-stress in animal production.
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95
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Rutting S, Zakarya R, Bozier J, Xenaki D, Horvat JC, Wood LG, Hansbro PM, Oliver BG. Dietary Fatty Acids Amplify Inflammatory Responses to Infection through p38 MAPK Signaling. Am J Respir Cell Mol Biol 2019; 60:554-568. [PMID: 30648905 DOI: 10.1165/rcmb.2018-0215oc] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Obesity is an important risk factor for severe asthma exacerbations, which are mainly caused by respiratory infections. Dietary fatty acids, which are increased systemically in obese patients and are further increased after high-fat meals, affect the innate immune system and may contribute to dysfunctional immune responses to respiratory infection. In this study we investigated the effects of dietary fatty acids on immune responses to respiratory infection in pulmonary fibroblasts and a bronchial epithelial cell line (BEAS-2B). Cells were challenged with BSA-conjugated fatty acids (ω-6 polyunsaturated fatty acids [PUFAs], ω-3 PUFAs, or saturated fatty acids [SFAs]) +/- the viral mimic polyinosinic:polycytidylic acid (poly[I:C]) or bacterial compound lipoteichoic acid (LTA), and release of proinflammatory cytokines was measured. In both cell types, challenge with arachidonic acid (AA) (ω-6 PUFA) and poly(I:C) or LTA led to substantially greater IL-6 and CXCL8 release than either challenge alone, demonstrating synergy. In epithelial cells, palmitic acid (SFA) combined with poly(I:C) also led to greater IL-6 release. The underlying signaling pathways of AA and poly(I:C)- or LTA-induced cytokine release were examined using specific signaling inhibitors and IB. Cytokine production in pulmonary fibroblasts was prostaglandin dependent, and synergistic upregulation occurred via p38 mitogen-activated protein kinase signaling, whereas cytokine production in bronchial epithelial cell lines was mainly mediated through JNK and p38 mitogen-activated protein kinase signaling. We confirmed these findings using rhinovirus infection, demonstrating that AA enhances rhinovirus-induced cytokine release. This study suggests that during respiratory infection, increased levels of dietary ω-6 PUFAs and SFAs may lead to more severe airway inflammation and may contribute to and/or increase the severity of asthma exacerbations.
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Affiliation(s)
- Sandra Rutting
- 1 Respiratory Cellular and Molecular Biology, Woolcock Institute of Medical Research, The University of Sydney, Sydney, Australia.,2 Priority Research Centre for Healthy Lungs, Hunter Medical Research Institute and University of Newcastle, Newcastle, Australia
| | - Razia Zakarya
- 1 Respiratory Cellular and Molecular Biology, Woolcock Institute of Medical Research, The University of Sydney, Sydney, Australia.,3 School of Life Sciences and
| | - Jack Bozier
- 1 Respiratory Cellular and Molecular Biology, Woolcock Institute of Medical Research, The University of Sydney, Sydney, Australia.,3 School of Life Sciences and
| | - Dia Xenaki
- 1 Respiratory Cellular and Molecular Biology, Woolcock Institute of Medical Research, The University of Sydney, Sydney, Australia
| | - Jay C Horvat
- 2 Priority Research Centre for Healthy Lungs, Hunter Medical Research Institute and University of Newcastle, Newcastle, Australia
| | - Lisa G Wood
- 2 Priority Research Centre for Healthy Lungs, Hunter Medical Research Institute and University of Newcastle, Newcastle, Australia
| | - Philip M Hansbro
- 2 Priority Research Centre for Healthy Lungs, Hunter Medical Research Institute and University of Newcastle, Newcastle, Australia.,5 University of Technology Sydney, Faculty of Science, Ultimo, Australia; and.,4 Centre for Inflammation, Centenary Institute, Sydney, Australia
| | - Brian G Oliver
- 1 Respiratory Cellular and Molecular Biology, Woolcock Institute of Medical Research, The University of Sydney, Sydney, Australia.,3 School of Life Sciences and
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96
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He S, Yu Q, He Y, Hu R, Xia S, He J. Dietary resveratrol supplementation inhibits heat stress-induced high-activated innate immunity and inflammatory response in spleen of yellow-feather broilers. Poult Sci 2019; 98:6378-6387. [PMID: 31406997 PMCID: PMC8913767 DOI: 10.3382/ps/pez471] [Citation(s) in RCA: 61] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2019] [Accepted: 07/30/2019] [Indexed: 12/13/2022] Open
Abstract
The aim of this study was to investigate the effect of dietary resveratrol supplementation on innate immunity and inflammatory responses in the spleen of yellow-feather broilers under heat stress. A total of 288 yellow-feather broilers of 28-day-old were randomly assigned to 3 treatment groups with 6 replicates. A thermo-neutral group (TN) (24 ± 2°C) received a basal diet and another 2 heat-stressed groups (37 ± 2°C for 8 h/D and 24 ± 2°C for the remaining time) were fed the basal diet (HT) or basal diet with 500 mg/kg resveratrol (HT+Res) for 14 consecutive days. The results showed that heat stress decreased (P < 0.05) the growth index of thymus, spleen, and bursa of Fabricius, reduced (P < 0.05) the levels of complement C3 and C4 in serum. Heat stress also caused activation of inflammatory immune responses evidenced by increased (P < 0.05) the mRNA abundance of HSP (heat shock protein) 70, toll-like receptor (TLR)1, TLR4, TLR5, myeloid differentiation factor-88 (MyD88), nucleotide-binding oligomerization domain 1 (NOD1), Dectin-1, transforming growth factor-β-activated kinase 1 (TAK1), interleukin (IL)-1, IL-4, IL-6, and tumor necrosis factor (TNF)-α, but decreased the mRNA abundance of interferon (IFN)-γ, activated nuclear factor kappa B (NF-κB), mitogen-activated protein kinases (MAPK), and phosphoinositide-3 kinases-protein kinase B (PI3K/AKT) signaling pathways. Dietary supplementation with resveratrol improved (P < 0.05) the growth index of thymus, spleen and bursa Fabricius, and increased (P < 0.05) the serum level of complement C3 under heat stress. In addition, resveratrol reduced (P < 0.05) the mRNA abundance of HSP70, TLR4, TLR5, NOD1, Dectin-1, and TAK1, and inhibited the NF-κB, MAPK and PI3K/AKT signaling pathway via down-regulated the phosphorylation of p65, extracellular signal-regulated kinases 1/2, c-Jun N-terminal protein kinase and AKT, as well as decreased the inflammatory cytokines expression, including IL-1, IL-4, IL-6, and TNF-α in the spleen under heat stress. Collectively, dietary resveratrol could have beneficial effects to regulate innate immunity and inflammatory response, via inhibiting the activation of NF-κB, MAPK, and PI3K/AKT signaling pathways induced by heat stress in the spleen.
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97
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Lee YM, Son E, Kim SH, Kim DS. Effect of Alpinia oxyphylla extract in vitro and in a monosodium iodoacetate-induced osteoarthritis rat model. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2019; 65:153095. [PMID: 31568919 DOI: 10.1016/j.phymed.2019.153095] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2018] [Revised: 09/10/2019] [Accepted: 09/20/2019] [Indexed: 05/15/2023]
Abstract
BACKGROUND Osteoarthritis (OA) affects the articular cartilage and subchondral bone of synovial joints and induces proinflammatory and anti-inflammatory pathway dysregulation, leading to pain. This study evaluated the anti-inflammatory and antiosteoarthritis effects of Alpinia oxyphylla extract (AOE) in vitro and in vivo. METHODS The anti-inflammatory effect of AOE was evaluated in vitro in lipopolysaccharide (LPS)-treated RAW264.7 cells. The antiosteoarthritis effect of AOE was investigated in a monosodium iodoacetate (MIA)-induced rat model of OA. Rats were orally administered AOE (150 mg/kg or 300 mg/kg) or the positive control drug indomethacin (1 mg/kg) 3 days before MIA injection and once daily for 21 days thereafter. RESULTS AOE significantly decreased the production of nitric oxide (NO, 68.2%), prostaglandin E2 (PGE2, 92.8%), interleukin-1β (IL-1β, 77.2%), interleukin-6 (IL-6, 39.9%), and tumor necrosis factor-alpha (TNF-α, 20.7%) and the activation of extracellular signal-regulated kinase (ERK), Jun N-terminal kinase (JNK) and p38 mitogen-activated protein kinase (MAPK) in LPS-treated RAW264.7 cells at a dose of 100 µg/ml. In addition, AOE attenuated joint pain, suppressed proinflammatory cytokine and mediator production and inhibited cartilage degradation in the MIA-induced rat OA model. CONCLUSION These results demonstrate that AOE exerts potent anti-inflammatory effects and may be a useful therapeutic candidate against OA.
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Affiliation(s)
- Yun Mi Lee
- Herbal Medicine Research Division, Korea Institute of Oriental Medicine, Daejeon 34054, South Korea.
| | - Eunjung Son
- Herbal Medicine Research Division, Korea Institute of Oriental Medicine, Daejeon 34054, South Korea.
| | - Seung-Hyung Kim
- Institute of Traditional Medicine and Bioscience, Daejeon University, Daejeon 34520, South Korea.
| | - Dong-Seon Kim
- Herbal Medicine Research Division, Korea Institute of Oriental Medicine, Daejeon 34054, South Korea.
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98
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Hernandez EP, Talactac MR, Fujisaki K, Tanaka T. The case for oxidative stress molecule involvement in the tick-pathogen interactions -an omics approach. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2019; 100:103409. [PMID: 31200008 DOI: 10.1016/j.dci.2019.103409] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Revised: 05/30/2019] [Accepted: 06/03/2019] [Indexed: 06/09/2023]
Abstract
The blood-feeding behavior of ticks has resulted in them becoming one of the most important vectors of disease-causing pathogens. Ticks possess a well-developed innate immune system to counter invading pathogens. However, the coevolution of ticks with tick-borne pathogens has adapted these pathogens to the tick's physiology and immune response through several mechanisms including transcriptional regulation. The recent development in tick and tick-borne disease research greatly involved the "omics" approach. The omics approach takes a look en masse at the different genes, proteins, metabolomes, and the microbiome of the ticks that could be differentiated during pathogen infection. Data from this approach revealed that oxidative stress-related molecules in ticks are differentiated and possibly being exploited by the pathogens to evade the tick's immune response. In this study, we review and discuss transcriptomic and proteomic data for some oxidative stress molecules differentially expressed during pathogen infection. We also discuss metabolomics and microbiome data as well as functional genomics in order to provide insight into the tick-pathogen interaction.
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Affiliation(s)
- Emmanuel Pacia Hernandez
- Laboratory of Infectious Diseases, Joint Faculty of Veterinary Medicine, Kagoshima University, 1-21-24 Korimoto, Kagoshima, 890-0056, Japan; Department of Pathological and Preventive Veterinary Science, The United Graduate School of Veterinary Science, Yamaguchi University, Yoshida, Yamaguchi, 753-8515, Japan
| | - Melbourne Rio Talactac
- Laboratory of Infectious Diseases, Joint Faculty of Veterinary Medicine, Kagoshima University, 1-21-24 Korimoto, Kagoshima, 890-0056, Japan; Department of Clinical and Population Health, College of Veterinary Medicine and Biomedical Sciences, Cavite State University, Cavite, 4122, Philippines
| | - Kozo Fujisaki
- National Agricultural and Food Research Organization, 3-1-5 Kannondai, Tsukuba, Ibaraki, 305-0856, Japan
| | - Tetsuya Tanaka
- Laboratory of Infectious Diseases, Joint Faculty of Veterinary Medicine, Kagoshima University, 1-21-24 Korimoto, Kagoshima, 890-0056, Japan; Department of Pathological and Preventive Veterinary Science, The United Graduate School of Veterinary Science, Yamaguchi University, Yoshida, Yamaguchi, 753-8515, Japan.
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100
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Perturbation of ubiquitin homeostasis promotes macrophage oxidative defenses. Sci Rep 2019; 9:10245. [PMID: 31308397 PMCID: PMC6629656 DOI: 10.1038/s41598-019-46526-9] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2018] [Accepted: 06/25/2019] [Indexed: 11/12/2022] Open
Abstract
The innate immune system senses microbial ligands through pattern recognition and triggers downstream signaling cascades to promote inflammation and immune defense mechanisms. Emerging evidence suggests that cells also recognize alterations in host processes induced by infection as triggers. Protein ubiquitination and deubiquitination are post-translational modification processes essential for signaling and maintenance of cellular homeostasis, and infections can cause global alterations in the host ubiquitin proteome. Here we used a chemical biology approach to perturb the cellular ubiquitin proteome as a simplified model to study the impact of ubiquitin homeostasis alteration on macrophage function. Perturbation of ubiquitin homeostasis led to a rapid and transient burst of reactive oxygen species (ROS) that promoted macrophage inflammatory and anti-infective capacity. Moreover, we found that ROS production was dependent on the NOX2 phagocyte NADPH oxidase. Global alteration of the ubiquitin proteome also enhanced proinflammatory cytokine production in mice stimulated with a sub-lethal dose of LPS. Collectively, our findings suggest that major changes in the host ubiquitin landscape may be a potent signal to rapidly deploy innate immune defenses.
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