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Khadri L, Ziraksaz MH, Barekzai AB, Ghauri B. T cell responses to SARS-CoV-2. PROGRESS IN MOLECULAR BIOLOGY AND TRANSLATIONAL SCIENCE 2023; 202:183-217. [PMID: 38237986 DOI: 10.1016/bs.pmbts.2023.06.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/23/2024]
Abstract
This chapter provides a comprehensive analysis of T cell responses in COVID-19, focusing on T cell differentiation, specificity, and functional characteristics during SARS-CoV-2 infection. The differentiation of T cells in COVID-19 is explored, highlighting the key factors that influence T cell fate and effector functions. The immunology of the spike protein, a critical component of SARS-CoV-2, is discussed in detail, emphasizing its role in driving T-cell responses. The cellular immune responses against SARS-CoV-2 during acute infection are examined, including the specificity, phenotype, and functional attributes of SARS-CoV-2-specific T-cell responses. Furthermore, the chapter explores T-cell cross-recognition against other human coronaviruses (HCoVs) and the mechanisms of immune regulation mediated by spike proteins. This includes the induction of regulation through the innate immune system, the activation of self-spike protein-cross-reactive regulatory T cells, and the impact of self-tolerance on the regulation of spike proteins. The chapter investigates T cell responses to self-spike proteins and their implications in disease. The role of spike proteins as immunological targets in the context of COVID-19 is examined, shedding light on potential therapeutic interventions and clinical trials in autoimmune diseases. In conclusion, this chapter provides a comprehensive understanding of T cell responses in COVID-19, highlighting their differentiation, immune regulation, and clinical implications. This knowledge contributes to the development of targeted immunotherapies, vaccine strategies, and diagnostic approaches for COVID-19 and other related diseases.
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Affiliation(s)
- Laiqha Khadri
- Department of Biotechnology, Immune Inspired, Bangalore.
| | | | | | - Baber Ghauri
- Department of Biotechnology, Immune Inspired, Bangalore
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Hu D, Mo X, Luo J, Wang F, Huang C, Xie H, Jin L. 17-DMAG ameliorates neuroinflammation and BBB disruption via SOX5 mediated PI3K/Akt pathway after intracerebral hemorrhage in rats. Int Immunopharmacol 2023; 123:110698. [PMID: 37517381 DOI: 10.1016/j.intimp.2023.110698] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 07/13/2023] [Accepted: 07/20/2023] [Indexed: 08/01/2023]
Abstract
Intracerebral hemorrhage (ICH) can result in secondary brain injury due to inflammation and breakdown of the blood-brain barrier (BBB), which are closely associated with patient prognosis. The potential of the heat shock protein 90 (Hsp90) inhibitor 17-DMAG in promoting neuroprotection has been observed in certain vascular diseases. However, the precise role of 17-DMAG treatment in ICH is not yet fully understood. In this study, we found that treatment with 17-DMAG (5 mg/kg) effectively reduced hematoma expansion and resulted in improved neurological outcomes. Meanwhile, the injection of 17-DMAG had a positive effect on reducing BBB disruption in rats with ICH. This effect was achieved by increasing the levels of BBB tight junction proteins (TJPs) such as zo-1, claudin-5, and occludin. As a result, the leakage of EB extravasation, brain edema and IgG in the peri-hematoma tissue were reduced. Furthermore, the injection of 17-DMAG decreased the infiltration of neutrophils into the brain tissues surrounding the hematoma in ICH rats and also reduced the production of proinflammatory cytokines IL-6 and TNF-α. Next, we used integrative mass spectrometry (MS) and molecular docking analysis to confirm that sex determining region Y-box protein 5 (SOX5) is a potential direct target of 17-DMAG in ICH. SOX5 encodes a positive regulator of the PI3K/Akt axis, and treatment with 17-DMAG resulted in a noticeable increase in SOX5 accumulation. To further investigate the role of SOX5, we employed virus-regulated SOX5 silencing and found that suppressing SOX5 blocked the ability of 17-DMAG to suppress neutrophil trafficking. Additionally, silencing SOX5 blocked the protective effects of 17-DMAG on the BBB by inhibiting PI3K, p-Akt, and BBB TJPs levels, which led to an increase in EB and IgG leakage in the peri-hematoma tissue after ICH. Similarly, when SOX5 was knocked down, the protective effects of 17-DMAG were lost. Overall, the results of our study indicate that the injection of 17-DMAG has the potential to mitigate neuroinflammation and prevent the disruption of the BBB caused by ICH, resulting in improved neurological outcomes in rats. These positive effects are attributed to the regulation of SOX5 and activation of the PI3K/Akt pathway. These findings highlight the possibility of targeting SOX5 and the PI3K/Akt pathway as a novel therapeutic approach for ICH.
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Affiliation(s)
- Di Hu
- Department of Neurology and Stroke Centre, the First Affiliated Hospital of Jinan University, Guangzhou, China
| | - Xiaocong Mo
- Department of Oncology, the First Affiliated Hospital of Jinan University, Jinan University, Guangzhou, China
| | - Jihang Luo
- Department of Oncology, the First Affiliated Hospital of Jinan University, Jinan University, Guangzhou, China
| | - Fang Wang
- Department of Neurology and Stroke Centre, the First Affiliated Hospital of Jinan University, Guangzhou, China
| | - Cheng Huang
- Department of Neurology and Stroke Centre, the First Affiliated Hospital of Jinan University, Guangzhou, China
| | - Hesong Xie
- Department of Neurology and Stroke Centre, the First Affiliated Hospital of Jinan University, Guangzhou, China
| | - Ling Jin
- Department of Oncology, the First Affiliated Hospital of Jinan University, Jinan University, Guangzhou, China.
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Zhang S, Rao S, Yang MW, Huang YT, Hong FF, Yang SL. Pharmacological effects of the Cassia Seed on atherosclerosis: A meta-analysis based on network pharmacology. Medicine (Baltimore) 2022; 101:e30411. [PMID: 36086754 PMCID: PMC10980403 DOI: 10.1097/md.0000000000030411] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Accepted: 07/26/2022] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND The aim of this study was to shed light on the active ingredients and potential targets of Cassia Seed about anti-atherosclerosis based on network pharmacology. METHODS The active ingredients and potential targets of Cassia Seed were obtained from traditional Chinese medicine systems pharmacology database and analysis platform (TCMSP) and SwissTargetPrediction database. Then, atherosclerosis-related targets were screened via GeneCards, online mendelian inheritance in man, therapeutic target database and DrugBank database. The common targets and protein-protein interaction (PPI) network was later identified and built. Furthermore, we used the database for annotation, visualization and integrated discovery (DAVID) database server to accomplish the enrichment analysis. The compounds-targets-pathways network was ultimately constructed by Cytoscape. RESULTS A total of 14 active ingredients and 475 related targets were sifted from Cassia Seed. Among 574 potential atherosclerotic targets, there were 99 targets overlapped with those of Cassia Seed. Topological analysis with Cytoscape revealed that proto-oncogene tyrosine-protein kinase proto-oncogene tyrosine-protein kinase Src, transcription factor AP-1 (JUN), mitogen-activated protein kinase 8 (MAPK8), mitogen-activated protein kinase 14 (MAPK14) and catenin beta-1 were considered as the hub gene. Gene ontology (GO) and Kyoto encyclopedia of genes and genomes (KEGG) enrichment analysis suggested that the Cassia Seed had the potential to influence varieties of biological processes and pathways, including positive regulation of smooth muscle cell proliferation, inflammatory response, tumor necrosis factor (TNF) signaling pathway, vascular endothelial growth factor (VEGF) signaling pathway and arachidonic acid (ARA) metabolism. CONCLUSION Taken together, our findings support that anti-atherosclerosis effects of Cassia Seed are characterized by multi-component, multi-target and multi-path mechanism of action.
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Affiliation(s)
- Sen Zhang
- Department of Physiology, College of Medicine, Nanchang University, Nanchang, China
| | - Sijing Rao
- Department of Physiology, College of Medicine, Nanchang University, Nanchang, China
| | - Mei Wen Yang
- Department of Surgery, Fuzhou Medical College, Nanchang University, Jiangxi, Fuzhou, China
| | - Ya-Ting Huang
- Department of Physiology, College of Medicine, Nanchang University, Nanchang, China
| | - Fen-Fang Hong
- Experimental Center of Pathogen Biology, Nanchang University, Nanchang, China
| | - Shu-Long Yang
- Department of Physiology, College of Medicine, Nanchang University, Nanchang, China
- Key Research Laboratory of Chronic Diseases, Fuzhou Medical College, Nanchang University, Fuzhou, China
- Department of Physiology, Fuzhou Medical College, Nanchang University, Jiangxi, Fuzhou, China
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Abstract
Heat shock proteins (HSPs) are a kind of proteins which mostly found in bacterial, plant and animal cells, in which they are involved in the monitoring and regulation of cellular life activities. HSPs protect other proteins under environmental and cellular stress by regulating protein folding and supporting the correctly folded structure of proteins as chaperones. During viral infection, some HSPs can have an antiviral effect by inhibiting viral proliferation through interaction and activating immune pathways to protect the host cell. However, although the biological function of HSPs is to maintain the homeostasis of cells, some HSPs will also be hijacked by viruses to help their invasion, replication, and maturation, thereby increasing the chances of viral survival in unfavorable conditions inside the host cell. In this review, we summarize the roles of the heat shock protein family in various stages of viral infection and the potential uses of these proteins in antiviral therapy.
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Affiliation(s)
- Xizhen Zhang
- Institute of Biochemistry, College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, China
- Zhejiang Provincial Key Laboratory of Silkworm Bioreactor and Biomedicine, Hangzhou, China
| | - Wei Yu
- Institute of Biochemistry, College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, China
- Zhejiang Provincial Key Laboratory of Silkworm Bioreactor and Biomedicine, Hangzhou, China
- *Correspondence: Wei Yu,
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Wang Y, Scarneo SA, Kim SH, Zhang X, Chen J, Yang KW, Hughes P, Haystead T, Nackley AG. Expression of ectopic heat shock protein 90 in male and female primary afferent nociceptors regulates inflammatory pain. Pain 2022; 163:1091-1101. [PMID: 34995041 PMCID: PMC9001751 DOI: 10.1097/j.pain.0000000000002511] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Accepted: 09/24/2021] [Indexed: 10/20/2022]
Abstract
ABSTRACT Heat shock protein 90 (Hsp90) is a ubiquitously expressed integral cellular protein essential for regulating proteomic stress. Previous research has shown that Hsp90 regulates critical signaling pathways underlying chronic pain and inflammation. Recent discovery of membrane bound ectopic Hsp90 (eHsp90) on tumor cells has shown that Hsp90 induction to the plasma membrane can stabilize disease-relevant proteins. Here, we characterize eHsp90 expression in a mouse model of inflammation and demonstrate its role in nociception and pain. We found that intraplantar complete Freund adjuvant (CFA) induced robust expression of eHsp90 on the cell membranes of primary afferent nociceptors located in the L3-L5 dorsal root ganglia (DRG), bilaterally, with minimal to no expression in other tissues. Complete Freund adjuvant-induced increases in eHsp90 expression on lumbar DRG were significantly greater in females compared with males. Furthermore, exogenous Hsp90 applied to primary Pirt-GCaMP3 nociceptors induced increases in calcium responses. Responses were estrogen-dependent such that greater activity was observed in female or estrogen-primed male nociceptors compared with unprimed male nociceptors. Treatment of mice with the selective eHsp90 inhibitor HS-131 (10 nmol) significantly reversed CFA-induced mechanical pain, thermal heat pain, and hind paw edema. Notably, a higher dose (20 nmol) of HS-131 was required to achieve analgesic and anti-inflammatory effects in females. Here, we provide the first demonstration that inflammation leads to an upregulation of eHsp90 on DRG nociceptors in a sex-dependent manner and that inhibition of eHsp90 reduces nociceptor activity, pain, and inflammation. Thus, eHsp90 represents a novel therapeutic axis for the development of gender-tailored treatments for inflammatory pain.
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Affiliation(s)
- Yaomin Wang
- Center for Translational Pain Medicine, Department of Anesthesiology, Duke University School of Medicine, Durham NC 27705
| | - Scott A Scarneo
- Center for Translational Pain Medicine, Department of Anesthesiology, Duke University School of Medicine, Durham NC 27705
- Department of Pharmacology and Cancer Biology, Duke University School of Medicine, Durham NC 27705
| | - Shin Hyung Kim
- Center for Translational Pain Medicine, Department of Anesthesiology, Duke University School of Medicine, Durham NC 27705
- Department of Anesthesiology and Pain Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - Xin Zhang
- Center for Translational Pain Medicine, Department of Anesthesiology, Duke University School of Medicine, Durham NC 27705
| | - Jiegen Chen
- Center for Translational Pain Medicine, Department of Anesthesiology, Duke University School of Medicine, Durham NC 27705
| | - Kelly W. Yang
- Department of Pharmacology and Cancer Biology, Duke University School of Medicine, Durham NC 27705
| | - Philip Hughes
- Department of Pharmacology and Cancer Biology, Duke University School of Medicine, Durham NC 27705
| | - Timothy Haystead
- Department of Pharmacology and Cancer Biology, Duke University School of Medicine, Durham NC 27705
| | - Andrea G Nackley
- Center for Translational Pain Medicine, Department of Anesthesiology, Duke University School of Medicine, Durham NC 27705
- Department of Pharmacology and Cancer Biology, Duke University School of Medicine, Durham NC 27705
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Lyu M, Wang Y, Chen Q, Qin J, Hou D, Huang S, Shao D, Gong X, Huang G, Zhang S, Zhang Z, Cui H. Molecular Mechanism Underlying Effects of Wumeiwan on Steroid-Dependent Asthma: A Network Pharmacology, Molecular Docking, and Experimental Verification Study. Drug Des Devel Ther 2022; 16:909-929. [PMID: 35386850 PMCID: PMC8978578 DOI: 10.2147/dddt.s349950] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Accepted: 02/15/2022] [Indexed: 12/15/2022] Open
Abstract
Background Steroid-dependent asthma (SDA) is characterized by oral corticosteroid (OCS) resistance and dependence. Wumeiwan (WMW) showed potentials in reducing the dose of OCS of SDA patients based on our previous studies. Methods Network pharmacology was conducted to explore the molecular mechanism of WMW against SDA with the databases of TCMSP, STRING, etcetera. GO annotation and KEGG functional enrichment analysis were conducted by metascape database. Pymol performed the molecular docking. In the experiment, the OVA-induced plus descending dexamethasone intervention chronic asthmatic rat model was conducted. Lung pathological changes were analyzed by H&E, Masson, and IHC staining. Relative expressions of the gene were performed by real-time PCR. Results A total of 102 bioactive ingredients in WMW were identified, as well as 191 common targets were found from 241 predicted targets in WMW and 3539 SDA-related targets. The top five bioactive ingredients were identified as pivotal ingredients, which included quercetin, candletoxin A, palmidin A, kaempferol, and beta-sitosterol. Besides, 35 HUB genes were obtained from the PPI network, namely, TP53, AKT1, MAPK1, JUN, HSP90AA1, TNF, RELA, IL6, CXCL8, EGFR, etcetera. GO biological process analysis indicated that HUB genes were related to bacteria, transferase, cell differentiation, and steroid. KEGG pathway enrichment analysis indicated that the potential mechanism might be associated with IL-17 and MAPK signaling pathways. Molecular docking results supported these findings. H&E and Masson staining proved that WMW could reduce airway inflammation and remodeling of model rats, which might be related to the downward expression of IL-8 proved by IHC staining and real-time PCR. Conclusion WMW could be a complementary and alternative therapy for SDA by reducing airway inflammation.
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Affiliation(s)
- Mingsheng Lyu
- Department of Respiratory, The Third Affiliated Hospital, Beijing University of Chinese Medicine, Beijing, People's Republic of China
| | - Yahui Wang
- Department of Neurology and Stroke Center, Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing, People's Republic of China
| | - Qiuyi Chen
- Department of Respiratory, The Third Affiliated Hospital, Beijing University of Chinese Medicine, Beijing, People's Republic of China
| | - Jingbo Qin
- National Institute of TCM Constitution and Preventive Medicine, School of Chinese Medicine, Beijing University of Chinese Medicine, Beijing, People's Republic of China
| | - Dan Hou
- Department of Respiratory, The Third Affiliated Hospital, Beijing University of Chinese Medicine, Beijing, People's Republic of China
| | - Shuaiyang Huang
- Department of Respiratory, The Third Affiliated Hospital, Beijing University of Chinese Medicine, Beijing, People's Republic of China
| | - Dongmei Shao
- Department of Respiratory, The Third Affiliated Hospital, Beijing University of Chinese Medicine, Beijing, People's Republic of China
| | - Xuefeng Gong
- Department of Traditional Chinese Medicine, Beijing Chaoyang Hospital, Capital Medical University, Beijing, People's Republic of China
| | - Guirui Huang
- Department of Respiratory, The Third Affiliated Hospital, Beijing University of Chinese Medicine, Beijing, People's Republic of China
| | - Shiyu Zhang
- Department of Respiratory, The Third Affiliated Hospital, Beijing University of Chinese Medicine, Beijing, People's Republic of China
| | - Zhijie Zhang
- Department of Respiratory, The Third Affiliated Hospital, Beijing University of Chinese Medicine, Beijing, People's Republic of China
| | - Hongsheng Cui
- Department of Respiratory, The Third Affiliated Hospital, Beijing University of Chinese Medicine, Beijing, People's Republic of China
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Albakova Z, Mangasarova Y. The HSP Immune Network in Cancer. Front Immunol 2021; 12:796493. [PMID: 34917098 PMCID: PMC8669653 DOI: 10.3389/fimmu.2021.796493] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2021] [Accepted: 11/16/2021] [Indexed: 12/12/2022] Open
Abstract
Heat shock proteins are molecular chaperones which support tumor development by regulating various cellular processes including unfolded protein response, mitochondrial bioenergetics, apoptosis, autophagy, necroptosis, lipid metabolism, angiogenesis, cancer cell stemness, epithelial-mesenchymal transition and tumor immunity. Apart from their intracellular activities, HSPs have also distinct extracellular functions. However, the role that HSP chaperones play in the regulation of immune responses inside and outside the cell is not yet clear. Herein, we explore the intracellular and extracellular immunologic functions of HSPs in cancer. A broader understanding of how HSPs modulate immune responses may provide critical insights for the development of effective immunotherapies.
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Affiliation(s)
- Zarema Albakova
- Department of Immunology, Lomonosov Moscow State University, Moscow, Russia
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8
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Chen M, Luo Y, Men L, Lin B, Lin H, Li Y, Zhong G, Zhong X, Fu W, Zhou H, Tong G, Liu Q, Luan J. Investigating the mechanisms of Modified Xiaoyaosan (tiaogan-liqi prescription) in suppressing the progression of atherosclerosis, by means of integrative pharmacology and experimental validation. Aging (Albany NY) 2021; 13:11411-11432. [PMID: 33839698 PMCID: PMC8109114 DOI: 10.18632/aging.202832] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Accepted: 02/16/2021] [Indexed: 01/26/2023]
Abstract
Atherosclerosis (AS)-related diseases remain among the leading causes of death worldwide. Modified Xiaoyaosan (also called Tiaogan-Liqi prescription, TGLQ), a traditional Chinese medical formulation, has been widely applied in the treatment of AS-related diseases. The aim of this study was to investigate the underlying pharmacological mechanisms of TGLQ in acting on AS. A total of 548 chemical compounds contained in TGLQ, and 969 putative targets, were collected from the Computation Platform for Integrative Pharmacology of Traditional Chinese Medicine, while 1005 therapeutic targets for the treatment of AS were obtained from the DisGeNET, TTD and CTD databases. Moreover, the 63 key targets were screened by the intersection of the targets above, and by network topological analysis. Further functional enrichment analysis showed that the key targets were significantly associated with regulation of the immune system and inflammation, improvement of lipid and glucose metabolism, regulation of the neuroendocrine system and anti-thrombosis effect. The in vivo experiments confirmed that TGLQ could reduce plasma lipid profiles and plasma inflammatory cytokines, and also inhibit AS plaque formation, within the AS model ApoE-/- mice. The in vitro experiments validated the hypothesis that TGLQ could significantly reduce intracellular lipid accumulation, suppress the production of inflammatory cytokines of macrophages induced by oxidized-LDL, and inhibit the protein expression of heat shock protein 90 and toll-like receptor 4. This study identified a list of key targets of TGLQ in the treatment of AS by applying an integrative pharmacology approach, which was validated by in vivo and in vitro experimentation.
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Affiliation(s)
- Mingtai Chen
- Department of Cardiovascular Disease, Shenzhen Traditional Chinese Medicine Hospital, Shenzhen, China.,Faculty of Chinese Medicine and State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macao, China
| | - Yong Luo
- Centre for Integrative Medicine, School of Basic Medical Science, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China
| | - Ling Men
- Nephrology Department, Shenzhen Traditional Chinese Medicine Hospital, Shenzhen, China
| | - Bo Lin
- Intensive Care Unit, Shenzhen Traditional Chinese Medicine Hospital, Shenzhen, China
| | - Haidan Lin
- Department of Cardiovascular Disease, Shenzhen Traditional Chinese Medicine Hospital, Shenzhen, China
| | - Ying Li
- Department of Cardiovascular Disease, Shenzhen Traditional Chinese Medicine Hospital, Shenzhen, China
| | - Guofu Zhong
- Intensive Care Unit, Shenzhen Traditional Chinese Medicine Hospital, Shenzhen, China
| | - Xiaoling Zhong
- Reproductive Health Department, Shenzhen Traditional Chinese Medicine Hospital, Shenzhen, China
| | - Wenjun Fu
- Centre for Integrative Medicine, School of Basic Medical Science, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China
| | - Hua Zhou
- Faculty of Chinese Medicine and State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macao, China
| | - Guangdong Tong
- Faculty of Chinese Medicine and State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macao, China.,Department of Liver Disease, Shenzhen Traditional Chinese Medicine Hospital, Guangzhou University of Chinese Medicine, Shenzhen, China
| | - Qiang Liu
- Department of Cardiovascular Disease, Shenzhen Traditional Chinese Medicine Hospital, Shenzhen, China
| | - Jienan Luan
- Department of Cardiovascular Disease, Shenzhen Traditional Chinese Medicine Hospital, Shenzhen, China
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Yang L, Jiménez JA, Earley AM, Hamlin V, Kwon V, Dixon CT, Shiau CE. Drainage of inflammatory macromolecules from the brain to periphery targets the liver for macrophage infiltration. eLife 2020; 9:58191. [PMID: 32735214 PMCID: PMC7434444 DOI: 10.7554/elife.58191] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Accepted: 07/27/2020] [Indexed: 12/16/2022] Open
Abstract
Many brain pathologies are associated with liver damage, but a direct link has long remained elusive. Here, we establish a new paradigm for interrogating brain-periphery interactions by leveraging zebrafish for its unparalleled access to the intact whole animal for in vivo analysis in real time after triggering focal brain inflammation. Using traceable lipopolysaccharides (LPS), we reveal that drainage of these inflammatory macromolecules from the brain led to a strikingly robust peripheral infiltration of macrophages into the liver independent of Kupffer cells. We further demonstrate that this macrophage recruitment requires signaling from the cytokine IL-34 and Toll-like receptor adaptor MyD88, and occurs in coordination with neutrophils. These results highlight the possibility for circulation of brain-derived substances to serve as a rapid mode of communication from brain to the liver. Understanding how the brain engages the periphery at times of danger may offer new perspectives for detecting and treating brain pathologies.
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Affiliation(s)
- Linlin Yang
- Department of Biology, University of North Carolina at Chapel Hill, Chapel Hill, United States
| | - Jessica A Jiménez
- Department of Biology, University of North Carolina at Chapel Hill, Chapel Hill, United States
| | - Alison M Earley
- Department of Biology, University of North Carolina at Chapel Hill, Chapel Hill, United States
| | - Victoria Hamlin
- Department of Biology, University of North Carolina at Chapel Hill, Chapel Hill, United States
| | - Victoria Kwon
- Department of Biology, University of North Carolina at Chapel Hill, Chapel Hill, United States
| | - Cameron T Dixon
- Department of Biology, University of North Carolina at Chapel Hill, Chapel Hill, United States
| | - Celia E Shiau
- Department of Biology, University of North Carolina at Chapel Hill, Chapel Hill, United States.,Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, United States
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10
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Su Z, Chang Q, Drelich A, Shelite T, Judy B, Liu Y, Xiao J, Zhou C, He X, Jin Y, Saito T, Tang S, Soong L, Wakamiya M, Fang X, Bukreyev A, Ksiazek T, Russell WK, Gong B. Annexin A2 depletion exacerbates the intracerebral microhemorrhage induced by acute rickettsia and Ebola virus infections. PLoS Negl Trop Dis 2020; 14:e0007960. [PMID: 32687500 PMCID: PMC7392349 DOI: 10.1371/journal.pntd.0007960] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2019] [Revised: 07/30/2020] [Accepted: 06/02/2020] [Indexed: 12/17/2022] Open
Abstract
Intracerebral microhemorrhages (CMHs) are small foci of hemorrhages in the cerebrum. Acute infections induced by some intracellular pathogens, including rickettsia, can result in CMHs. Annexin a2 (ANXA2) has been documented to play a functional role during intracellular bacterial adhesion. Here we report that ANXA2-knockout (KO) mice are more susceptible to CMHs in response to rickettsia and Ebola virus infections, suggesting an essential role of ANXA2 in protecting vascular integrity during these intracellular pathogen infections. Proteomic analysis via mass spectrometry of whole brain lysates and brain-derived endosomes from ANXA2-KO and wild-type (WT) mice post-infection with R. australis revealed that a variety of significant proteins were differentially expressed, and the follow-up function enrichment analysis had identified several relevant cell-cell junction functions. Immunohistology study confirmed that both infected WT and infected ANXA2-KO mice were subjected to adherens junctional protein (VE-cadherin) damages. However, key blood-brain barrier (BBB) components, tight junctional proteins ZO-1 and occludin, were disorganized in the brains from R. australis-infected ANXA2-KO mice, but not those of infected WT mice. Similar ANXA2-KO dependent CMHs and fragments of ZO-1 and occludin were also observed in Ebola virus-infected ANXA2-KO mice, but not found in infected WT mice. Overall, our study revealed a novel role of ANXA2 in the formation of CMHs during R. australis and Ebola virus infections; and the underlying mechanism is relevant to the role of ANXA2-regulated tight junctions and its role in stabilizing the BBB in these deadly infections.
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Affiliation(s)
- Zhengchen Su
- Department of Pathology, University of Texas Medical Branch, Galveston, Texas, United States of America
| | - Qing Chang
- Department of Pathology, University of Texas Medical Branch, Galveston, Texas, United States of America
| | - Aleksandra Drelich
- Department of Pathology, University of Texas Medical Branch, Galveston, Texas, United States of America
| | - Thomas Shelite
- Department of Internal Medicine, Infectious Diseases, University of Texas Medical Branch, Galveston, Texas, United States of America
| | - Barbara Judy
- Department of Pathology, University of Texas Medical Branch, Galveston, Texas, United States of America
| | - Yakun Liu
- Department of Pathology, University of Texas Medical Branch, Galveston, Texas, United States of America
| | - Jie Xiao
- Department of Pathology, University of Texas Medical Branch, Galveston, Texas, United States of America
| | - Changchen Zhou
- Department of Pathology, University of Texas Medical Branch, Galveston, Texas, United States of America
| | - Xi He
- Department of Pathology, University of Texas Medical Branch, Galveston, Texas, United States of America
| | - Yang Jin
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Boston University Medical Campus, Boston, Massachusetts, United States of America
| | - Tais Saito
- Department of Pathology, University of Texas Medical Branch, Galveston, Texas, United States of America
- Galveston National Laboratory, Galveston, Texas, United States of America
| | - Shaojun Tang
- Department of Neuroscience and Cell Biology, University of Texas Medical Branch, Galveston, Texas, United States of America
| | - Lynn Soong
- Galveston National Laboratory, Galveston, Texas, United States of America
- Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston, Texas, United States of America
| | - Maki Wakamiya
- Department of Neurology, University of Texas Medical Branch, Galveston, Texas, United States of America
| | - Xiang Fang
- Department of Neurology, University of Texas Medical Branch, Galveston, Texas, United States of America
| | - Alexander Bukreyev
- Department of Pathology, University of Texas Medical Branch, Galveston, Texas, United States of America
- Galveston National Laboratory, Galveston, Texas, United States of America
- Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston, Texas, United States of America
| | - Thomas Ksiazek
- Department of Pathology, University of Texas Medical Branch, Galveston, Texas, United States of America
- Galveston National Laboratory, Galveston, Texas, United States of America
| | - William K. Russell
- Department of Biochemistry and Molecular Biology, University of Texas Medical Branch, Galveston, Texas, United States of America
| | - Bin Gong
- Department of Pathology, University of Texas Medical Branch, Galveston, Texas, United States of America
- Galveston National Laboratory, Galveston, Texas, United States of America
- * E-mail:
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11
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Aspirin Enhances the Protection of Hsp90 from Heat-Stressed Injury in Cardiac Microvascular Endothelial Cells Through PI3K-Akt and PKM2 Pathways. Cells 2020; 9:cells9010243. [PMID: 31963688 PMCID: PMC7016979 DOI: 10.3390/cells9010243] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2019] [Revised: 01/11/2020] [Accepted: 01/15/2020] [Indexed: 12/27/2022] Open
Abstract
Heat stress (HS) often causes sudden death of humans and animals due to heart failure, mainly resulting from the contraction of cardiac microvasculature followed by myocardial ischemia. Cardiac microvascular endothelial cells (CMVECs) play an important role in maintaining vasodilatation. Aspirin (ASA) is well known for its protective abilities of febrile animals. However, there is little knowledge about molecular resistance mechanisms of CMVECs and which role ASA may play in this context. Therefore, we used a heat stress model of rat cardiac microvascular endothelial cell cultures in vitro and investigated the cell injuries and molecular resistance mechanism of CMVECs caused by heat stress, and the effect of aspirin (ASA) on it. HS induced severe pathological damage of CMVECs and cellular oxidative stress and dysfunction of NO release. Hsp90 was proven to be indispensable for resisting HS-injury of CMVECs through PI3K-Akt and PKM2 signaling pathways. Meanwhile, PKM2 functioned in reducing Akt phosphorylation. ASA treatment of CMVECs induced a significant expression of Hsp90, which promoted both Akt and PKM2 signals, which are beneficial for relieving HS damage and maintaining the function of CMVECs. Akt activation also promoted HSF-1 that regulates the expression of Hsp70, which is known to assist Hsp90′s molecular chaperone function and when released to the extracellular liquid to protect myocardial cells from HS damage. To the best of our knowledge, this is the first study to show that HS damages CMVECs and the protection mechanism of Hsp90 on it, and that ASA provides a new potential strategy for regulating cardiac microcirculation preventing HS-induced heart failure.
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12
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Qiao Y, Wang C, Kou J, Wang L, Han D, Huo D, Li F, Zhou X, Meng D, Xu J, Murtaza G, Artyom B, Ma N, Luo S. MicroRNA-23a suppresses the apoptosis of inflammatory macrophages and foam cells in atherogenesis by targeting HSP90. Gene 2019; 729:144319. [PMID: 31884108 DOI: 10.1016/j.gene.2019.144319] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Accepted: 12/20/2019] [Indexed: 11/25/2022]
Abstract
In previous study, we have found that microRNA-23a is down regulated in atherosclerotic tissues. Here we demonstrate that miR-23a directly binds to 3'UTR of HSP90 mRNA to suppress the expression of HSP90. To investigate the potential roles of miR-23a in macrophage, THP-1 macrophages were transfected with miR-23a mimics or inhibitors. Our results showed inflammatory factors IL-6 and MCP-1 concentrations in cell culture medium of macrophage and foam cell transfected with miR-23a mimics were decreased. Furthermore, we find that apoptosis of macrophage and foam cells transfected with miR-23a mimics were inhibited. Over expression of miR-23a in foam cells could reduced lipid intake and accumulation in foam cells. Meanwhile, we found that in inflammatory macrophages and foam cells transfected with miR-23a mimcs, HSP90 and NF-κB proteins are significantly decreased. Our results have suggested a promising and potential therapeutic target for atherosclerosis.
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Affiliation(s)
- Yu Qiao
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, China; Key Laboratory of Cardiovascular Medicine Research (Harbin Medical University), Ministry of Education, Harbin, China; Medical Science Institute of Hei Longjiang Province, Harbin, China
| | - Chuxuan Wang
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, China; Key Laboratory of Cardiovascular Medicine Research (Harbin Medical University), Ministry of Education, Harbin, China; Translational Medicine Center of Northern China, Harbin Medical University, Harbin, China; Medical Science Institute of Hei Longjiang Province, Harbin, China
| | - Jiayuan Kou
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, China; Key Laboratory of Cardiovascular Medicine Research (Harbin Medical University), Ministry of Education, Harbin, China; Medical Science Institute of Hei Longjiang Province, Harbin, China
| | - Lujing Wang
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, China; Key Laboratory of Cardiovascular Medicine Research (Harbin Medical University), Ministry of Education, Harbin, China; Medical Science Institute of Hei Longjiang Province, Harbin, China
| | - Dong Han
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, China; Key Laboratory of Cardiovascular Medicine Research (Harbin Medical University), Ministry of Education, Harbin, China; Medical Science Institute of Hei Longjiang Province, Harbin, China
| | - Da Huo
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, China; Key Laboratory of Cardiovascular Medicine Research (Harbin Medical University), Ministry of Education, Harbin, China; Medical Science Institute of Hei Longjiang Province, Harbin, China
| | - Fuyan Li
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, China; Key Laboratory of Cardiovascular Medicine Research (Harbin Medical University), Ministry of Education, Harbin, China; Medical Science Institute of Hei Longjiang Province, Harbin, China
| | - Xiaoxi Zhou
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, China; Key Laboratory of Cardiovascular Medicine Research (Harbin Medical University), Ministry of Education, Harbin, China; Medical Science Institute of Hei Longjiang Province, Harbin, China
| | - Dehao Meng
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, China; Key Laboratory of Cardiovascular Medicine Research (Harbin Medical University), Ministry of Education, Harbin, China; Medical Science Institute of Hei Longjiang Province, Harbin, China
| | - Jiaran Xu
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, China; Key Laboratory of Cardiovascular Medicine Research (Harbin Medical University), Ministry of Education, Harbin, China; Medical Science Institute of Hei Longjiang Province, Harbin, China
| | - Ghulam Murtaza
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, China; Key Laboratory of Cardiovascular Medicine Research (Harbin Medical University), Ministry of Education, Harbin, China; Medical Science Institute of Hei Longjiang Province, Harbin, China
| | - Bobkov Artyom
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, China; Key Laboratory of Cardiovascular Medicine Research (Harbin Medical University), Ministry of Education, Harbin, China; Medical Science Institute of Hei Longjiang Province, Harbin, China
| | - Ning Ma
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, China; Key Laboratory of Cardiovascular Medicine Research (Harbin Medical University), Ministry of Education, Harbin, China; Medical Science Institute of Hei Longjiang Province, Harbin, China.
| | - Shanshun Luo
- Department of Gerontology, The First Hospital of Harbin Medical University, Harbin, China.
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13
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Stoeva M. RETRACTED ARTICLE: Apoptotic suppression of inflammatory macrophages and foam cells in vascular tissue by miR-23a. HEALTH AND TECHNOLOGY 2019. [DOI: 10.1007/s12553-019-00301-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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14
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Mellatyar H, Talaei S, Pilehvar-Soltanahmadi Y, Barzegar A, Akbarzadeh A, Shahabi A, Barekati-Mowahed M, Zarghami N. Targeted cancer therapy through 17-DMAG as an Hsp90 inhibitor: Overview and current state of the art. Biomed Pharmacother 2018; 102:608-617. [PMID: 29602128 DOI: 10.1016/j.biopha.2018.03.102] [Citation(s) in RCA: 70] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2018] [Revised: 03/06/2018] [Accepted: 03/17/2018] [Indexed: 12/08/2022] Open
Abstract
Heat shock protein 90 (Hsp90) is an evolutionary preserved molecular chaperone which mediates many cellular processes such as cell transformation, proliferation, and survival in normal and stress conditions. Hsp90 plays an important role in folding, maturation, stabilization and activation of Hsp90 client proteins which all contribute to the development, and proliferation of cancer as well as other inflammatory diseases. Functional inhibition of Hsp90 can have a massive effect on various oncogenic and inflammatory pathways, and will result in the degradation of their client proteins. This turns it into an interesting target in the treatment of different malignancies. 17-dimethylaminoethylamino-17-demethoxygeldanamycin (17-DMAG) as a semi-synthetic derivative of geldanamycin, has several advantages over 17-Allylamino-17-demethoxygeldanamycin (17-AAG) such as higher water solubility, good bioavailability, reduced metabolism, and greater anti-tumour capability. 17-DMAG binds to the Hsp90, and inhibits its function which eventually results in the degradation of Hsp90 client proteins. Here, we reviewed the pre-clinical data and clinical trial data on 17-DMAG as a single agent, in combination with other agents and loaded on nanomaterials in various cancers and inflammatory diseases.
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Affiliation(s)
- Hassan Mellatyar
- Hematology and Oncology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran; Department of Medical Biotechnology, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Sona Talaei
- Hematology and Oncology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran; Department of Medical Biotechnology, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Younes Pilehvar-Soltanahmadi
- Hematology and Oncology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran; Department of Medical Biotechnology, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Abolfazl Barzegar
- Research Institute for Fundamental Sciences (RIFS), University of Tabriz, Tabriz, Iran
| | - Abolfazl Akbarzadeh
- Department of Medical Nanotechnology, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Arman Shahabi
- Department of Molecular Medicine, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mazyar Barekati-Mowahed
- Department of Physiology and Biophysics, School of Medicine, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, OH 44106, USA
| | - Nosratollah Zarghami
- Hematology and Oncology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran; Department of Medical Biotechnology, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran.
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15
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Quantitative proteomics reveals molecular mechanism of gamabufotalin and its potential inhibition on Hsp90 in lung cancer. Oncotarget 2018; 7:76551-76564. [PMID: 27384878 PMCID: PMC5363529 DOI: 10.18632/oncotarget.10388] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2016] [Accepted: 05/05/2016] [Indexed: 12/24/2022] Open
Abstract
Gamabufotalin (CS-6) is a major bufadienolide of Chansu, which shows desirable metabolic stability and less adverse effect in cancer therapy. CS-6 treatment inhibited the proliferation of NSCLC in a nanomolar range. And CS-6 could induce G2/M cell cycle arrest and apoptosis in A549 cells. However, its molecular mechanism in antitumor activity remains poorly understood. We employed a quantitative proteomics approach to identify the potential cellular targets of CS-6, and found 38 possible target-related proteins. Among them, 31 proteins were closely related in the protein-protein interaction network. One of the regulatory nodes in key pathways was occupied by Hsp90. Molecular docking revealed that CS-6 interacted with the ATP-binding sites of Hsp90. In addition, CS-6 inhibited the chaperone function of Hsp90 and reduced expression of Hsp90-dependent client proteins. Moreover, CS-6 markedly down-regulated the protein level of Hsp90 in tumor tissues of the xenograft mice. Taken together, our results suggest that CS-6 might be a novel inhibitor of Hsp90, and the possible network associated with CS-6 target-related proteins was constructed, which provided experimental evidence for the preclinical value of using CS-6 as an effective antitumor agent in treatment of NSCLC.
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16
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Zhang XH, Wu H, Tang S, Li QN, Xu J, Zhang M, Su YN, Yin B, Zhao QL, Kemper N, Hartung J, Bao ED. Apoptosis in response to heat stress is positively associated with heat-shock protein 90 expression in chicken myocardial cells in vitro. J Vet Sci 2018; 18:129-140. [PMID: 27297424 PMCID: PMC5489459 DOI: 10.4142/jvs.2017.18.2.129] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2016] [Revised: 03/24/2016] [Accepted: 05/12/2016] [Indexed: 11/29/2022] Open
Abstract
To determine heat-shock protein (Hsp)90 expression is connected with cellular apoptotic response to heat stress and its mechanism, chicken (Gallus gallus) primary myocardial cells were treated with the Hsp90 promoter, aspirin, and its inhibitor, geldanamycin (GA), before heat stress. Cellular viability, heat-stressed apoptosis and reactive oxygen species level under different treatments were measured, and the expression of key proteins of the signaling pathway related to Hsp90 and their colocalization with Hsp90 were detected. The results showed that aspirin treatment increased the expression of protein kinase B (Akt), the signal transducer and activator of transcription (STAT)-3 and p-IKKα/β and the colocalization of Akt and STAT-3 with Hsp90 during heat stress, which was accompanied by improved viability and low apoptosis. GA significantly inhibited Akt expression and p-IKKα/β level, but not STAT-3 quantity, while the colocalization of Akt and STAT-3 with Hsp90 was weakened, followed by lower cell viability and higher apoptosis. Aspirin after GA treatment partially improved the stress response and apoptosis rate of tested cells caused by the recovery of Akt expression and colocalization, rather than the level of STAT-3 (including its co-localization with Hsp90) and p-IKKα/β. Therefore, Hsp90 expression has a positive effect on cellular capacity to resist heat-stressed injury and apoptosis. Moreover, inhibition of Hsp90 before stress partially attenuated its positive effects.
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Affiliation(s)
- Xiao-Hui Zhang
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China
| | - Hong Wu
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China
| | - Shu Tang
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China
| | - Qiao-Ning Li
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China
| | - Jiao Xu
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China
| | - Miao Zhang
- College of Animal Science and Technology, Jinling Institute of Technology, Nanjing 210038, China
| | - Ya-Nan Su
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China
| | - Bin Yin
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China
| | - Qi-Ling Zhao
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China
| | - Nicole Kemper
- Institute for Animal Hygiene, Animal Welfare and Farm Animal Behaviour, University of Veterinary Medicine Hannover, Foundation, Hannover 30173, Germany
| | - Joerg Hartung
- Institute for Animal Hygiene, Animal Welfare and Farm Animal Behaviour, University of Veterinary Medicine Hannover, Foundation, Hannover 30173, Germany
| | - En-Dong Bao
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China
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17
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Bzowska M, Nogieć A, Bania K, Zygmunt M, Zarębski M, Dobrucki J, Guzik K. Involvement of cell surface 90 kDa heat shock protein (HSP90) in pattern recognition by human monocyte-derived macrophages. J Leukoc Biol 2017; 102:763-774. [PMID: 28550115 DOI: 10.1189/jlb.2ma0117-019r] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2017] [Revised: 04/20/2017] [Accepted: 04/29/2017] [Indexed: 12/25/2022] Open
Abstract
Heat shock proteins (HSPs) are typical intracellular chaperones which also appear on the cell surface and in extracellular milieu. HSP90, which chaperones many proteins involved in signal transduction, is also a regular component of LPS-signaling complexes on Mϕ. As LPS is a prototypical PAMP, we speculated that HSP90 is engaged in pattern recognition by professional phagocytes. In this report, we provide the first evidence, to our knowledge, of the geldanamycin (Ge)-inhibitable HSP90 on the surface of live monocyte-derived Mϕs (hMDMs). Using cytometry and specific Abs, we showed both HSP90 isoforms (α and β) on the surface of human monocytes and hMDMs. The cell-surface HSP90 pool was also labeled with cell-impermeable Ge derivatives. Confocal analysis of hMDMs revealed that HSP90-inhibitor complexes were rapidly clustered on the cell surface and recycled through the endosomal compartment. This finding suggests that the N-terminal (ATPase) domain of HSP90 is exposed and accessible from the extracellular space. To study the role of cell-surface HSP90 in pattern recognition, we used pathogen (PAMPs)- or apoptotic cell-associated molecular patterns (ACAMPs). We showed that blocking the cell-surface HSP90 pool leads to a dramatic decrease in TNF production by monocytes and hMDMs exposed to soluble (TLRs-specific ligands) and particulate [bacteria Staphylococcus aureus (SA) and Porphyromonas gingivalis (PG)] PAMPs. Surprisingly, in hMDMs the functional cell-surface HSP90 was not necessary for the engulfment of either apoptotic neutrophils or bacteria. The presented data suggest that the cell-surface HSP90 is a "signaling complex chaperone," with activity that is essential for cytokine response but not for target engulfment by Mϕ.
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Affiliation(s)
- Małgorzata Bzowska
- Department of Immunology, Faculty of Biochemistry, Biophysics, and Biotechnology, Jagiellonian University, Kraków, Poland; and
| | - Anna Nogieć
- Department of Immunology, Faculty of Biochemistry, Biophysics, and Biotechnology, Jagiellonian University, Kraków, Poland; and
| | - Krystian Bania
- Department of Immunology, Faculty of Biochemistry, Biophysics, and Biotechnology, Jagiellonian University, Kraków, Poland; and
| | - Magdalena Zygmunt
- Department of Immunology, Faculty of Biochemistry, Biophysics, and Biotechnology, Jagiellonian University, Kraków, Poland; and
| | - Mirosław Zarębski
- Department of Cell Biophysics, Faculty of Biochemistry, Biophysics, and Biotechnology, Jagiellonian University, Kraków, Poland
| | - Jerzy Dobrucki
- Department of Cell Biophysics, Faculty of Biochemistry, Biophysics, and Biotechnology, Jagiellonian University, Kraków, Poland
| | - Krzysztof Guzik
- Department of Immunology, Faculty of Biochemistry, Biophysics, and Biotechnology, Jagiellonian University, Kraków, Poland; and
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18
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Anti-Inflammatory Mechanism Involved in Pomegranate-Mediated Prevention of Breast Cancer: the Role of NF-κB and Nrf2 Signaling Pathways. Nutrients 2017; 9:nu9050436. [PMID: 28452959 PMCID: PMC5452166 DOI: 10.3390/nu9050436] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2017] [Accepted: 04/05/2017] [Indexed: 12/14/2022] Open
Abstract
Pomegranate (Punica granatum L.), a nutrient-rich unique fruit, has been used for centuries for the prevention and treatment of various inflammation-driven diseases. Based on our previous study, a characterized pomegranate emulsion (PE) exhibited a striking inhibition of dimethylbenz(a)anthracene (DMBA)-initiated rat mammary tumorigenesis via antiproliferative and apoptosis-inducing mechanisms. The objective of the present work is to investigate the anti-inflammatory mechanism of action of PE during DMBA rat mammary carcinogenesis by evaluating the expression of cyclooxygenase-2 (COX-2), heat shock protein 90 (HSP90), nuclear factor-κB (NF-κB) and nuclear factor erythroid 2p45 (NF-E2)-related factor 2 (Nrf2). Mammary tumor samples were harvested from our previous chemopreventive study in which PE (0.2–5.0 g/kg) was found to reduce mammary tumorigenesis in a dose-dependent manner. The expressions of COX-2, HSP90, NF-κB, inhibitory κBα (IκBα) and Nrf2 were detected by immunohistochemical techniques. PE decreased the expression of COX-2 and HSP90, prevented the degradation of IκBα, hindered the translocation of NF-κB from cytosol to nucleus and increased the expression and nuclear translocation of Nrf2 during DMBA-induced mammary tumorigenesis. These findings, together with our previous results, indicate that PE-mediated prevention of DMBA-evoked mammary carcinogenesis may involve anti-inflammatory mechanisms through concurrent but differential regulation of two interrelated molecular pathways, namely NF-κB and Nrf2 signaling.
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19
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Mu H, Wang L, Zhao L. HSP90 inhibition suppresses inflammatory response and reduces carotid atherosclerotic plaque formation in ApoE mice. Cardiovasc Ther 2017; 35. [PMID: 28009484 DOI: 10.1111/1755-5922.12243] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Affiliation(s)
- Hongmei Mu
- Department of Ultrasonography; Cangzhou Central Hospital; Cangzhou Hebei China
| | - Liyong Wang
- Department of Neurology; Cangzhou People's Hospital; Cangzhou Hebei China
| | - Lei Zhao
- Department of Cardiology; Cangzhou Central Hospital; Cangzhou Hebei China
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20
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Zhang H, Zhang X, Huang J, Fan X. Identification of key genes and pathways for peri-implantitis through the analysis of gene expression data. Exp Ther Med 2017; 13:1832-1840. [PMID: 28565775 PMCID: PMC5443169 DOI: 10.3892/etm.2017.4176] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2015] [Accepted: 11/25/2016] [Indexed: 12/11/2022] Open
Abstract
The present study attempted to identify potential key genes and pathways of peri-implantitis, and to investigate the possible mechanisms associated with it. An array data of GSE57631 was downloaded, including six samples of peri-implantitis tissue and two samples of normal tissue from the Gene Expression Omnibus (GEO) database. The differentially expressed genes (DEGs) in the peri-implantitis samples compared with normal ones were analyzed with the limma package. Moreover, Gene Ontology annotation and the Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment analyses for DEGs were performed by DAVID. A protein-protein interaction (PPI) network was established using Cytoscape software, and significant modules were analyzed using Molecular Complex Detection. A total of 819 DEGs (759 upregulated and 60 downregulated) were identified in the peri-implantitis samples compared with normal ones. Moreover, the PPI network was constructed with 413 nodes and 1,114 protein pairs. Heat shock protein HSP90AA1 (90 kDa α, member 1), a hub node with higher node degrees in module 4, was significantly enriched in antigen processing, in the presentation pathway and nucleotide-binding oligomerization domain (NOD)-like receptor-signaling pathway. In addition, nuclear factor-κ-B1 (NFKB1) was enriched in the NOD-like receptor-signaling pathway in KEGG pathway enrichment analysis for upregulated genes. The proteasome is the most significant pathway in module 1 with the highest P-value. Therefore, the results of the present study suggested that HSP90AA1 and NFKB1 may be potential key genes, and the NOD-like receptor signaling pathway and proteasome may be potential pathways associated with peri-implantitis development.
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Affiliation(s)
- Huang Zhang
- Department of Stomatology, Hangzhou First People's Hospital, Nanjing Medical University, Hangzhou, Zhejiang 310006, P.R. China
| | - Xiong Zhang
- Department of Stomatology, Hangzhou First People's Hospital, Nanjing Medical University, Hangzhou, Zhejiang 310006, P.R. China
| | - Jie Huang
- Department of Stomatology, Hangzhou First People's Hospital, Nanjing Medical University, Hangzhou, Zhejiang 310006, P.R. China
| | - Xusheng Fan
- Department of Stomatology, Hangzhou First People's Hospital, Nanjing Medical University, Hangzhou, Zhejiang 310006, P.R. China
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21
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Wang YL, Shen HH, Cheng PY, Chu YJ, Hwang HR, Lam KK, Lee YM. 17-DMAG, an HSP90 Inhibitor, Ameliorates Multiple Organ Dysfunction Syndrome via Induction of HSP70 in Endotoxemic Rats. PLoS One 2016; 11:e0155583. [PMID: 27224288 PMCID: PMC4880344 DOI: 10.1371/journal.pone.0155583] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2015] [Accepted: 05/02/2016] [Indexed: 01/14/2023] Open
Abstract
Sepsis is a systemic inflammatory disorder, accompanied with elevated oxidative stress, leading to multiple organ dysfunction syndrome (MODS), and disseminated intravascular coagulation. 17-Dimethylaminoethylamino- 17-demethoxygeldanamycin (17-DMAG), a heat shock protein (HSP) 90 inhibitor, has been reported to possess anti-inflammatory effects. In this study, the beneficial effects of 17-DMAG on lipopolysaccharide (LPS) induced MODS and DIC was evaluated in anesthetized rats. 17-DMAG (5 mg/kg, i.p.) was significantly increased survival rate, and prevented hypotension in LPS (30 mg/kg i.v. infused for 4 h) induced endotoxemia. The elevated levels of alanine aminotransferase (ALT), creatine phosphokinase (CPK), lactate dehydrogenase, creatinine, nitric oxide (NO) metabolites, IL-6, and TNF-α in LPS-exposed rat plasma were significantly reduced by 17-DMAG. Moreover, 17-DMAG suppressed LPS-induced superoxide anion production and caspase 3 activation in heart tissues. LPS induced the prolongation of prothrombin time, and a pronounced decrease in platelet count, which were improved by 17-DMAG. 17-DMAG markedly induced HSP70 and heme oxygenase (HO)-1, and suppressed inducible nitric oxide synthase (iNOS) and phosphorylated NF-κB p65 protein expression in organs 6 h after LPS initiation. Pretreatment with high dose of quercetin (300 mg/kg, i.p.), as an HSP70 inhibitor, reversed the beneficial effects of 17-DMAG on survival rate, plasma levels of ALT, CPK, creatinine, IL-6, and NO metabolites, iNOS induction, and caspase-3 activation in LPS-treated rats. In conclusion, 17-DMAG possesses the anti-inflammatory and antioxidant effects that were proved through LPS-induced acute inflammation, which is associated with induction of HSP70 and HO-1, leading to prevent MODS in sepsis.
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Affiliation(s)
- Yi-Li Wang
- Graduate Institute of Life Sciences, National Defense Medical Center, Taipei, Taiwan
| | - Hsin-Hsueh Shen
- Department of Pharmacology, National Defense Medical Center, Taipei, Taiwan
| | - Pao-Yun Cheng
- Department of Physiology & Biophysics, National Defense Medical Center, Taipei, Taiwan
| | - Yen-Ju Chu
- Department of Pharmacology, National Defense Medical Center, Taipei, Taiwan
| | - Hwong-Ru Hwang
- Division of Cardiology, Department of Medicine, Kaohsiung Veterans General Hospital, Kaohsiung, Taiwan
| | - Kwok-Keung Lam
- Department of Pharmacology, Taipei Medical University, Taipei, Taiwan
- Department of Anesthesiology, Catholic Mercy Hospital, Hsinchu, Taiwan
- * E-mail: (YML); (KKL)
| | - Yen-Mei Lee
- Graduate Institute of Life Sciences, National Defense Medical Center, Taipei, Taiwan
- Department of Pharmacology, National Defense Medical Center, Taipei, Taiwan
- * E-mail: (YML); (KKL)
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22
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FNDC4 acts as an anti-inflammatory factor on macrophages and improves colitis in mice. Nat Commun 2016; 7:11314. [PMID: 27066907 PMCID: PMC4832079 DOI: 10.1038/ncomms11314] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2016] [Accepted: 03/11/2016] [Indexed: 02/07/2023] Open
Abstract
FNDC4 is a secreted factor sharing high homology with the exercise-associated myokine irisin (FNDC5). Here we report that Fndc4 is robustly upregulated in several mouse models of inflammation as well as in human inflammatory conditions. Specifically, FNDC4 levels are increased locally at inflamed sites of the intestine of inflammatory bowel disease patients. Interestingly, administration of recombinant FNDC4 in the mouse model of induced colitis markedly reduces disease severity compared with mice injected with a control protein. Conversely, mice lacking Fndc4 develop more severe colitis. Analysis of binding of FNDC4 to different immune cell types reveals strong and specific binding to macrophages and monocytes. FNDC4 treatment of bone marrow-derived macrophages in vitro results in reduced phagocytosis, increased cell survival and reduced proinflammatory chemokine expression. Hence, treatment with FNDC4 results in a state of dampened macrophage activity, while enhancing their survival. Thus, we have characterized FNDC4 as a factor with direct therapeutic potential in inflammatory bowel disease and possibly other inflammatory diseases. FDNC4 is a poorly characterized homologue of FNDC5/irisin, a myokine induced by exercise. Here the authors show that FDNC4 increases macrophage survival in growth factor deprivation, inhibits phagocytosis and transcriptional responses to M1 and M2 polarizing stimuli, and protects mice from DSS-induced colitis.
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23
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Abstract
Heat-shock protein 90 (HSP90) is a highly conserved molecular chaperone that plays prominent functional roles in nearly all aspects of cell biology. As a chaperone, it interacts with literally hundreds of "clients," many of which are important drivers, regulators, and promoters of cancer. Thus, HSP90 is a high-value target in the development of anticancer therapeutics. Despite its popularity, our overall knowledge of HSP90 in immune function has lagged behind its well-recognized tumor-supportive roles. The use of inhibitors of HSP90 as chemical biological probes has been invaluable in revealing important roles for the chaperone in multiple aspects of immune function. Given this critical link, we must now consider the question of how immune outcomes may be affected by the HSP90 inhibitors currently in clinical development for the treatment of cancer. This chapter will review some of the immunological aspects of HSP90 function in terms of its intracellular and extracellular roles in antigen presentation, immune effector cell tasks, and regulation of inflammatory processes. This review will further examine the value of HSP90 inhibitors within the context of cancer immunotherapy and will discuss how these drugs might be optimally utilized in combination with immune stimulatory approaches against cancer.
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24
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Regna NL, Vieson MD, Gojmerac AM, Luo XM, Caudell DL, Reilly CM. HDAC expression and activity is upregulated in diseased lupus-prone mice. Int Immunopharmacol 2015; 29:494-503. [PMID: 26471208 DOI: 10.1016/j.intimp.2015.10.006] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2015] [Revised: 10/01/2015] [Accepted: 10/05/2015] [Indexed: 01/04/2023]
Abstract
Prior studies have shown that pan-HDAC inhibition can decrease disease in lupus mice; however, the mechanisms(s) remain to be elucidated. MRL/MpJ-Fas(lpr) (MRL/lpr) mice develop a lupus-like disease characterized by anti-dsDNA production, lymphoproliferation, and immune complex-mediated glomerulonephritis. Early- and late-disease (12 and 20weeks-of-age respectively) female MRL/lpr mice were compared to age-matched, healthy C57BL/6 mice for HDAC expression and activity in bone marrow (BM) B cells, splenic B and T cells, and glomerular cells. We found that HDAC6 was significantly overexpressed in B cells, splenic T cells and glomerular cells, whereas HDAC9 expression was significantly increased in splenic T cells, BM B cells and glomerular cells. Due to the overexpression of HDAC6, we tested whether treatment with a selective HDAC6 inhibitor (ACY-738) or a pan-HDAC inhibitor (TsA) would decrease HDAC activity. ACY-738 significantly reduced cytoplasmic HDAC activity whereas TsA significantly decreased both nuclear and cytoplasmic HDAC activity. In vitro studies in mesangial cells showed that ACY-738 increased α-tubulin and Hsp90 acetylation resulting in decreased nuclear activation of NF-κB. Treatment of pre-B cells with ACY-738 decreased the Bcl-2:Bax ratio leading to a pro-apoptotic environment. These results suggest that increased HDAC6 expression and activity contribute to SLE pathogenesis, and isoform-selective HDAC inhibitors may prove beneficial in the treatment of SLE by acetylating key signaling and transcription factors in inflammation and cell activation.
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Affiliation(s)
- Nicole L Regna
- Department of Biomedical Sciences & Pathobiology, Virginia-Maryland Regional College of Veterinary Medicine, Virginia Polytechnic Institute and State University, Blacksburg, VA 24060, United States
| | - Miranda D Vieson
- Department of Biomedical Sciences & Pathobiology, Virginia-Maryland Regional College of Veterinary Medicine, Virginia Polytechnic Institute and State University, Blacksburg, VA 24060, United States
| | - Alexander M Gojmerac
- Department of Biomedical Sciences & Pathobiology, Virginia-Maryland Regional College of Veterinary Medicine, Virginia Polytechnic Institute and State University, Blacksburg, VA 24060, United States
| | - Xin M Luo
- Department of Biomedical Sciences & Pathobiology, Virginia-Maryland Regional College of Veterinary Medicine, Virginia Polytechnic Institute and State University, Blacksburg, VA 24060, United States
| | - David L Caudell
- Wake Forest University Primate Center, Wake Forest School of Medicine, Winston-Salem, NC 27157, United States; Department of Pathology/Comparative Medicine, Wake Forest School of Medicine, Winston-Salem, NC 27157, United States
| | - Christopher M Reilly
- Department of Biomedical Sciences & Pathobiology, Virginia-Maryland Regional College of Veterinary Medicine, Virginia Polytechnic Institute and State University, Blacksburg, VA 24060, United States; Edward Via College of Osteopathic Medicine, Blacksburg, VA, 24060, United States.
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25
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Abstract
HIV-1 replication has been intensively investigated over the past 30 years. Hsp90 is one of the most abundant proteins in human cells, important in the formation and function of several protein complexes that maintain cell homeostasis. Remarkably, the impact of Hsp90 on HIV-1 infection has started to be appreciated only recently. Hsp90 has been shown to (a) promote HIV-1 gene expression in acutely infected cells, (b) localize at the viral promoter DNA, (c) mediate enhanced replication in conditions of hyperthermia and (d) activate the P-TEFb complex, which is essential for efficient HIV-1 transcription. Hsp90 has been implicated in buffering deleterious mutations of the viral core and in the regulation of innate and acquired immune responses to HIV-1 infection. Therefore, Hsp90 is an important host factor promoting several steps of the HIV-1 life cycle. Several small Hsp90 inhibitors are in Phase II clinical trials for human cancers and might potentially be used to inhibit HIV-1 infection at multiple levels.
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Mandal A, Bishayee A. Trianthema portulacastrum Linn. displays anti-inflammatory responses during chemically induced rat mammary tumorigenesis through simultaneous and differential regulation of NF-κB and Nrf2 signaling pathways. Int J Mol Sci 2015; 16:2426-45. [PMID: 25622256 PMCID: PMC4346844 DOI: 10.3390/ijms16022426] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2014] [Accepted: 01/13/2015] [Indexed: 12/19/2022] Open
Abstract
Trianthema portulacastrum, a medicinal and dietary plant, has gained substantial importance due to its various pharmacological properties, including anti-inflammatory and anticarcinogenic activities. We have recently reported that a characterized T. portulacastrum extract (TPE) affords a considerable chemoprevention of 7,12-dimethylbenz(a)anthracene (DMBA)-induced rat mammary tumorigenesis though the underlying mechanisms are not completely understood. The objective of this study was to investigate anti-inflammatory mechanisms of TPE during DMBA mammary carcinogenesis in rats by monitoring cyclooxygenase-2 (COX-2), heat shock protein 90 (HSP90), nuclear factor-kappaB (NF-κB) and nuclear factor erythroid 2-related factor 2 (Nrf2). Mammary tumors were harvested from our previous study in which TPE (50-200 mg/kg) was found to inhibit mammary tumorigenesis in a dose-response manner. The expressions of intratumor COX-2, HSP90, NF-κB, inhibitory kappaB-alpha (IκBα) and Nrf2 were determined by immunohistochemistry. TPE downregulated the expression of COX-2 and HSP90, blocked the degradation of IκBα, hampered the translocation of NF-κB from cytosol to nucleus and upregulated the expression and nuclear translocation of Nrf2 during DMBA mammary carcinogenesis. These results in conjunction with our previous findings suggest that TPE prevents DMBA-induced breast neoplasia by anti-inflammatory mechanisms mediated through simultaneous and differential modulation of two interconnected molecular circuits, namely NF-κB and Nrf2 signaling pathways.
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Affiliation(s)
- Animesh Mandal
- Cancer Therapeutics and Chemoprevention Group, Department of Pharmaceutical Sciences, College of Pharmacy, Northeast Ohio Medical University, Rootstown, OH 44272, USA.
| | - Anupam Bishayee
- Department of Pharmaceutical and Biomedical Sciences, College of Pharmacy, California Northstate University, Elk Grove, CA 95757, USA.
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Lee SL, Dempsey-Hibbert NC, Vimalachandran D, Wardle TD, Sutton P, Williams JHH. Targeting Heat Shock Proteins in Colorectal Cancer. ACTA ACUST UNITED AC 2015. [DOI: 10.1007/978-3-319-17211-8_17] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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28
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Lee MY, Sun KH, Chiang CP, Huang CF, Sun GH, Tsou YC, Liu HY, Tang SJ. Nitric oxide suppresses LPS-induced inflammation in a mouse asthma model by attenuating the interaction of IKK and Hsp90. Exp Biol Med (Maywood) 2014; 240:498-507. [PMID: 25519430 DOI: 10.1177/1535370214554880] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2014] [Accepted: 08/16/2014] [Indexed: 02/01/2023] Open
Abstract
A feature of allergic airway disease is the observed increase of nitric oxide (NO) in exhaled breath. Gram-negative bacterial infections have also been linked with asthma exacerbations. However, the role of NO in asthma exacerbations with gram-negative bacterial infections is still unclear. In this study, we examined the role of NO in lipopolysaccharide (LPS)-induced inflammation in an ovalbumin (OVA)-challenged mouse asthma model. To determine whether NO affected the LPS-induced response, a NO donor (S-nitroso-N-acetylpenicillamine, SNAP) or a selective inhibitor of NO synthase (1400W) was injected intraperitoneally into the mice before the LPS stimulation. Decreased levels of proinflammatory cytokines were demonstrated in the bronchoalveolar lavage fluid from mice treated with SNAP, whereas increased levels of cytokines were found in the 1400W-treated mice. To further explore the molecular mechanism of NO-mediated inhibition of proinflammatory responses in macrophages, RAW 264.7 cells were treated with 1400W or SNAP before LPS stimulation. LPS-induced inflammation in the cells was attenuated by the presence of NO. The LPS-induced IκB kinase (IKK) activation and the expression of IKK were reduced by NO through attenuation of the interaction between Hsp90 and IKK in the cells. The IKK decrease in the lung immunohistopathology was verified in SNAP-treated asthma mice, whereas IKK increased in the 1400W-treated group. We report for the first time that NO attenuates the interaction between Hsp90 and IKK, decreasing the stability of IKK and causing the down-regulation of the proinflammatory response. Furthermore, the results suggest that NO may repress LPS-stimulated innate immunity to promote pulmonary bacterial infection in asthma patients.
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Affiliation(s)
- Ming-Yung Lee
- Institute of Bioscience and Biotechnology, Center of Excellence for the Oceans, National Taiwan Ocean University, Keelung 20224, Taiwan, Republic of China Department of Pediatrics, Tri-service General Hospital, National Defense Medical Center, Taipei 114, Taiwan, Republic of China
| | - Kuang-Hui Sun
- Department of Biotechnology and Laboratory Science in Medicine, National Yang-Ming University, Taipei 112, Taiwan, Republic of China Department of Education and Research, Taipei City Hospital, Taipei 100, Taiwan
| | - Chien-Ping Chiang
- Department of Dermatology, Tri-service General Hospital, National Defense Medical Center, Taipei 114, Taiwan, Republic of China
| | - Ching-Feng Huang
- Department of Pediatrics, Tri-service General Hospital, National Defense Medical Center, Taipei 114, Taiwan, Republic of China
| | - Guang-Huan Sun
- Division of Urology, Department of Surgery, Tri-service General Hospital, National Defense Medical Center, Taipei 114, Taiwan, Republic of China
| | - Yu-Chi Tsou
- Institute of Bioscience and Biotechnology, Center of Excellence for the Oceans, National Taiwan Ocean University, Keelung 20224, Taiwan, Republic of China
| | - Huan-Yun Liu
- Division of Urology, Department of Surgery, Taoyuan Armed Forces General Hospital 32551, Taiwan, Republic of China
| | - Shye-Jye Tang
- Institute of Bioscience and Biotechnology, Center of Excellence for the Oceans, National Taiwan Ocean University, Keelung 20224, Taiwan, Republic of China
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Tukaj S, Grüner D, Zillikens D, Kasperkiewicz M. Hsp90 blockade modulates bullous pemphigoid IgG-induced IL-8 production by keratinocytes. Cell Stress Chaperones 2014; 19:887-94. [PMID: 24796797 PMCID: PMC4389849 DOI: 10.1007/s12192-014-0513-8] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2014] [Revised: 04/17/2014] [Accepted: 04/22/2014] [Indexed: 12/20/2022] Open
Abstract
Bullous pemphigoid (BP) is the most common subepidermal autoimmune blistering skin disease characterized by autoantibodies against the hemidesmosomal proteins BP180 and BP230. The cell stress chaperone heat shock protein 90 (Hsp90) has been implicated in inflammatory responses, and recent evidence suggests that it represents a novel treatment target in autoimmune bullous diseases. The aim of the study was to investigate the contribution of Hsp90 to the proinflammatory cytokine production in keratinocytes induced by autoantibodies to BP180 from BP patient serum. HaCaT cells were treated with purified human BP or normal IgG in the absence or presence of the Hsp90 blocker 17-DMAG and effects on viability, interleukin 6 (IL-6) and IL-8 (cytokines critical for BP pathology), NFκB (their major transcription factor), and Hsp70 (marker of effective Hsp90 inhibition and potent negative regulator of inflammatory responses) were investigated. We found that BP IgG stimulated IL-6 and IL-8 release from HaCaT cells and that non-toxic doses of 17-DMAG inhibited this IL-8, but not IL-6 secretion in a dose- and time-dependent fashion. Inhibition of this IL-8 production was also observed at the transcriptional level. In addition, 17-DMAG treatment blunted BP IgG-mediated upregulation of NFκB activity and was associated with Hsp70 induction. This study provides important insights that Hsp90 is involved as crucial regulator in anti-BP180 IgG-induced production of keratinocyte-derived IL-8. By adding to the knowledge of the multimodal anti-inflammatory effects of Hsp90 blockade, our data further support the introduction of Hsp90 inhibitors into the clinical setting for treatment of autoimmune diseases, especially for BP.
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Affiliation(s)
- Stefan Tukaj
- Department of Dermatology, University of Lübeck, Ratzeburger Allee 160, 23538 Lübeck, Germany
| | - Denise Grüner
- Department of Dermatology, University of Lübeck, Ratzeburger Allee 160, 23538 Lübeck, Germany
| | - Detlef Zillikens
- Department of Dermatology, University of Lübeck, Ratzeburger Allee 160, 23538 Lübeck, Germany
| | - Michael Kasperkiewicz
- Department of Dermatology, University of Lübeck, Ratzeburger Allee 160, 23538 Lübeck, Germany
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30
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Santos DM, Petersen ALOA, Celes FS, Borges VM, Veras PST, de Oliveira CI. Chemotherapeutic potential of 17-AAG against cutaneous leishmaniasis caused by Leishmania (Viannia) braziliensis. PLoS Negl Trop Dis 2014; 8:e3275. [PMID: 25340794 PMCID: PMC4207694 DOI: 10.1371/journal.pntd.0003275] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2014] [Accepted: 09/16/2014] [Indexed: 01/21/2023] Open
Abstract
BACKGROUND Leishmaniasis remains a worldwide public health problem. The limited therapeutic options, drug toxicity and reports of resistance, reinforce the need for the development of new treatment options. Previously, we showed that 17-(allylamino)-17-demethoxygeldanamycin (17-AAG), a Heat Shock Protein 90 (HSP90)-specific inhibitor, reduces L. (L.) amazonensis infection in vitro. Herein, we expand the current knowledge on the leishmanicidal activity of 17-AAG against cutaneous leishmaniasis, employing an experimental model of infection with L. (V.) braziliensis. METHODOLOGY/PRINCIPAL FINDINGS Exposure of axenic L. (V.) braziliensis promastigotes to 17-AAG resulted in direct dose-dependent parasite killing. These results were extended to L. (V.) braziliensis-infected macrophages, an effect that was dissociated from the production of nitric oxide (NO), superoxide (O(-2)) or inflammatory mediators such as TNF-α, IL-6 and MCP-1. The leishmanicidal effect was then demonstrated in vivo, employing BALB/c mice infected with L. braziliensis. In this model, 17-AAG treatment resulted in smaller skin lesions and parasite counts were also significantly reduced. Lastly, 17-AAG showed a similar effect to amphotericin B regarding the ability to reduce parasite viability. CONCLUSION/SIGNIFICANCE 17-AAG effectively inhibited the growth of L. braziliensis, both in vitro and in vivo. Given the chronicity of L. (V.) braziliensis infection and its association with mucocutaneous leishmaniasis, 17-AAG can be envisaged as a new chemotherapeutic alternative for cutaneous Leishmaniasis.
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Affiliation(s)
- Diego M. Santos
- Centro de Pesquisas Gonçalo Moniz, Fundação Oswaldo Cruz (FIOCRUZ), Salvador, Bahia, Brazil
| | | | - Fabiana S. Celes
- Centro de Pesquisas Gonçalo Moniz, Fundação Oswaldo Cruz (FIOCRUZ), Salvador, Bahia, Brazil
| | - Valeria M. Borges
- Centro de Pesquisas Gonçalo Moniz, Fundação Oswaldo Cruz (FIOCRUZ), Salvador, Bahia, Brazil
- Instituto Nacional de Ciência e Tecnologia de Investigação em Imunologia (iii-INCT), Salvador, Bahia, Brazil
| | - Patricia S. T. Veras
- Centro de Pesquisas Gonçalo Moniz, Fundação Oswaldo Cruz (FIOCRUZ), Salvador, Bahia, Brazil
| | - Camila I. de Oliveira
- Centro de Pesquisas Gonçalo Moniz, Fundação Oswaldo Cruz (FIOCRUZ), Salvador, Bahia, Brazil
- Instituto Nacional de Ciência e Tecnologia de Investigação em Imunologia (iii-INCT), Salvador, Bahia, Brazil
- * E-mail:
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31
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Miao J, Niu J, Wang K, Xiao Y, Du Y, Zhou L, Duan L, Li S, Yang G, Chen L, Tong M, Miao Y. Heat shock factor 2 levels are associated with the severity of ulcerative colitis. PLoS One 2014; 9:e88822. [PMID: 24533153 PMCID: PMC3923051 DOI: 10.1371/journal.pone.0088822] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2013] [Accepted: 01/12/2014] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND AND AIMS The morbidity of ulcerative colitis (UC) is increasing in China every year. In addition, there is a lack of accurate diagnostic indices with which to evaluate the activity of the disease. The aim of this study was to identify UC-associated proteins as biomarkers for the diagnosis, and objective assessment of disease activity. METHODS Differential expression of serum proteins from UC patients compared to normal controls was analyzed by two-dimensional electrophoresis (2-DE) and matrix-assisted laser desorption/ionization-time-of-flight mass spectrometry (MALDI-TOF-MS). The expression of heat shock factor 2(HSF2)in colonic mucosa in Crohn's disease, Behcet's disease, ulcerative colitis, intestinal tuberculosis, infective enteritis, intestinal lymphoma, and normal controls was investigated by immunohistochemistry (IHC). The expression of the HSF2 in colonic mucosa of UC subjects with varying severity of disease was measured by real time-PCR and Western Blots. The expression of HSF2 was inhibited by HSF2 small interfering RNA (siRNA) transfection in Caco-2 cells. The concentrations of HSF2, IL-1β, and TNF-α in serum and IL-1β, and TNF-α in the supernatants of transfected Caco-2 cells were determined by ELISA. RESULTS HSF2 was differentially expressed in UC patients compared to normal controls. HSF2 expression was significantly higher in the intestinal mucosa of UC patients compared to other six groups. The results of immunohistochemistry, real time-PCR, Western Blots, and ELISA showed that the expression of HSF2 increased in parallel with the severity of UC. The serum concentration of HSF2 also positively correlated with levels of IL-1β and TNF-α. After down-regulation expression of HSF2 in Caco-2 cells by RNA interference, the productions of IL-1β and TNF-α stimulated by lipopolysaccharide (LPS) increased dramatically. CONCLUSIONS HSF2 appears to be a potential novel molecular marker for UC activity, and may provide a basis for studies on the pathogenesis and novel therapeutic targets for UC.
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Affiliation(s)
- Jiarong Miao
- Department of Gastroenterology, The First Affiliated Hospital of Kunming Medical University, Kunming, P. R. China
| | - Junkun Niu
- Department of Gastroenterology, The First Affiliated Hospital of Kunming Medical University, Kunming, P. R. China
| | - Kunhua Wang
- Department of General Surgery, The First Affiliated Hospital of Kunming Medical University, Kunming, P. R. China
| | - Yuliang Xiao
- Department of Gastroenterology, The First Affiliated Hospital of Kunming Medical University, Kunming, P. R. China
| | - Yan Du
- Department of Clinical Laboratory, The First Affiliated Hospital of Kunming Medical University, Kunming, P. R. China
| | - Lifeng Zhou
- Department of Gastroenterology, The First Affiliated Hospital of Kunming Medical University, Kunming, P. R. China
| | - Liping Duan
- Department of Gastroenterology, The First Affiliated Hospital of Kunming Medical University, Kunming, P. R. China
| | - Shuan Li
- Department of Gastroenterology, The First Affiliated Hospital of Kunming Medical University, Kunming, P. R. China
| | - Gang Yang
- Department of Gastroenterology, The First Affiliated Hospital of Kunming Medical University, Kunming, P. R. China
| | - Lifang Chen
- Department of Gastroenterology, The First Affiliated Hospital of Kunming Medical University, Kunming, P. R. China
| | - Mingxia Tong
- Department of Gastroenterology, The First Affiliated Hospital of Kunming Medical University, Kunming, P. R. China
| | - Yinglei Miao
- Department of Gastroenterology, The First Affiliated Hospital of Kunming Medical University, Kunming, P. R. China
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MicroRNA-let-7a promotes E2F-mediated cell proliferation and NFκB activation in vitro. Cell Mol Immunol 2013; 11:79-83. [PMID: 24240124 DOI: 10.1038/cmi.2013.51] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2013] [Revised: 09/03/2013] [Accepted: 09/04/2013] [Indexed: 02/06/2023] Open
Abstract
Epigenetic factors, including altered microRNA (miRNA) expression, may contribute to aberrant immune cell function in systemic lupus erythematosus (SLE). MiRNA-let-7a (let-7a) has been shown to directly alter cell cycle progression and proinflammatory cytokine production. Due to the crucial role of let-7a in cell division and inflammation, we investigated let-7a-mediated proliferation and NFκB translocation in J774A.1 macrophages and MES 13 mesangial cells in vitro. In immune-stimulated cells transfected with let-7a, cell proliferation was significantly increased over time. There was a significant increase in the number of immune-stimulated cells in S and G2 phases. Immune-stimulated cells overexpressing let-7a had increased nuclear translocation of NFκB. Bioinformatical analysis revealed that the E2F family, critical regulators of the G1-S transition, has potential binding sites for let-7a in their mRNA transcripts. Let-7a overexpression significantly increased the expression of the cell cycle activator E2F2 and increased retinoblastoma protein (Rb) phosphorylation in immune-stimulated cells. The cell cycle inhibitor E2F5 was significantly decreased in let-7a-transfected cells that were immune-stimulated. Bioinformatical analysis revealed E2F2 and NFκB are transcription factors predicted to regulate the let-7a promoter. We analyzed transcriptional regulation of let-7a by real-time RT-PCR using chromatin immunoprecipitation with E2F2 and NFκB antibodies. There was an increase in E2F2 and NFκB binding in DNA enriched for the let-7a promoter in immune-stimulated cells. Silencing E2F2 or NFκB significantly decreased let-7a expression and IL-6 production in immune-stimulated cells. Taken together, our results suggest that overexpression of let-7a may contribute to hyperplasia and the proinflammatory response in SLE.
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Henderson B, Kaiser F. Do reciprocal interactions between cell stress proteins and cytokines create a new intra-/extra-cellular signalling nexus? Cell Stress Chaperones 2013; 18:685-701. [PMID: 23884786 PMCID: PMC3789882 DOI: 10.1007/s12192-013-0444-9] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2013] [Revised: 06/16/2013] [Accepted: 06/17/2013] [Indexed: 12/22/2022] Open
Abstract
Cytokine biology began in the 1950s, and by 1988, a large number of cytokines, with a myriad of biological actions, had been discovered. In 1988, the basis of the protein chaperoning function of the heat shock, or cell stress, proteins was identified, and it was assumed that this was their major activity. However, since this time, evidence has accumulated to show that cell stress proteins are secreted by cells and can stimulate cellular cytokine synthesis with the generation of pro- and/or anti-inflammatory cytokine networks. Cell stress can also control cytokine synthesis, and cytokines are able to induce, or even inhibit, the synthesis of selected cell stress proteins and may also promote their release. How cell stress proteins control the formation of cytokines is not understood and how cytokines control cell stress protein synthesis depends on the cellular compartment experiencing stress, with cytoplasmic heat shock factor 1 (HSF1) having a variety of actions on cytokine gene transcription. The endoplasmic reticulum unfolded protein response also exhibits a complex set of behaviours in terms of control of cytokine synthesis. In addition, individual intracellular cell stress proteins, such as Hsp27 and Hsp90, have major roles in controlling cellular responses to cytokines and in controlling cytokine synthesis in response to exogenous factors. While still confusing, the literature supports the hypothesis that cell stress proteins and cytokines may generate complex intra- and extra-cellular networks, which function in the control of cells to external and internal stressors and suggests the cell stress response as a key parameter in cytokine network generation and, as a consequence, in control of immunity.
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Affiliation(s)
- Brian Henderson
- />Department of Microbial Diseases, Eastman Dental Institute, University College London, London, UK
| | - Frank Kaiser
- />Department of Microbial Diseases, Eastman Dental Institute, University College London, London, UK
- />Division of Microbial Diseases, Eastman Dental Institute, University College London, 256 Gray’s Inn Road, London, WC1X 8LD UK
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Tukaj S, Kleszczyński K, Vafia K, Groth S, Meyersburg D, Trzonkowski P, Ludwig RJ, Zillikens D, Schmidt E, Fischer TW, Kasperkiewicz M. Aberrant expression and secretion of heat shock protein 90 in patients with bullous pemphigoid. PLoS One 2013; 8:e70496. [PMID: 23936217 PMCID: PMC3728143 DOI: 10.1371/journal.pone.0070496] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2013] [Accepted: 06/19/2013] [Indexed: 11/18/2022] Open
Abstract
The cell stress chaperone heat shock protein 90 (Hsp90) has been implicated in inflammatory responses and its inhibition has proven successful in different mouse models of autoimmune diseases, including epidermolysis bullosa acquisita. Here, we investigated expression levels and secretory responses of Hsp90 in patients with bullous pemphigoid (BP), the most common subepidermal autoimmune blistering skin disease. In comparison to healthy controls, the following observations were made: (i) Hsp90 was highly expressed in the skin of BP patients, whereas its serum levels were decreased and inversely associated with IgG autoantibody levels against the NC16A immunodominant region of the BP180 autoantigen, (ii) in contrast, neither aberrant levels of circulating Hsp90 nor any correlation of this protein with serum autoantibodies was found in a control cohort of autoimmune bullous disease patients with pemphigus vulgaris, (iii) Hsp90 was highly expressed in and restrictedly released from peripheral blood mononuclear cells of BP patients, and (iv) Hsp90 was potently induced in and restrictedly secreted from human keratinocyte (HaCaT) cells by BP serum and isolated anti-BP180 NC16A IgG autoantibodies, respectively. Our results reveal an upregulated Hsp90 expression at the site of inflammation and an autoantibody-mediated dysregulation of the intracellular and extracellular distribution of this chaperone in BP patients. These findings suggest that Hsp90 may play a pathophysiological role and represent a novel potential treatment target in BP.
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Affiliation(s)
- Stefan Tukaj
- Department of Dermatology, University of Lübeck, Lübeck, Germany
| | | | - Katerina Vafia
- Department of Dermatology, University of Lübeck, Lübeck, Germany
| | - Stephanie Groth
- Department of Dermatology, University of Lübeck, Lübeck, Germany
| | | | - Piotr Trzonkowski
- Department of Clinical Immunology and Transplantology, Medical University of Gdańsk, Gdańsk, Poland
| | - Ralf J. Ludwig
- Department of Dermatology, University of Lübeck, Lübeck, Germany
| | - Detlef Zillikens
- Department of Dermatology, University of Lübeck, Lübeck, Germany
| | - Enno Schmidt
- Department of Dermatology, University of Lübeck, Lübeck, Germany
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35
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Alarcon SV, Mollapour M, Lee MJ, Tsutsumi S, Lee S, Kim YS, Prince T, Apolo AB, Giaccone G, Xu W, Neckers LM, Trepel JB. Tumor-intrinsic and tumor-extrinsic factors impacting hsp90- targeted therapy. Curr Mol Med 2013; 12:1125-41. [PMID: 22804236 DOI: 10.2174/156652412803306729] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2012] [Revised: 05/18/2012] [Accepted: 07/07/2012] [Indexed: 01/19/2023]
Abstract
In 1994 the first heat shock protein 90 (Hsp90) inhibitor was identified and Hsp90 was reported to be a target for anticancer therapeutics. In the past 18 years there have been 17 distinct Hsp90 inhibitors entered into clinical trial, and the small molecule Hsp90 inhibitors have been highly valuable as probes of the role of Hsp90 and its client proteins in cancer. Although no Hsp90 inhibitor has achieved regulatory approval, recently there has been significant progress in Hsp90 inhibitor clinical development, and in the past year RECIST responses have been documented in HER2-positive breast cancer and EML4-ALK-positive non-small cell lung cancer. All of the clinical Hsp90 inhibitors studied to date are specific in their target, i.e. they bind exclusively to Hsp90 and two related heat shock proteins. However, Hsp90 inhibitors are markedly pleiotropic, causing degradation of over 200 client proteins and impacting critical multiprotein complexes. Furthermore, it has only recently been appreciated that Hsp90 inhibitors can, paradoxically, cause transient activation of the protein kinase clients they are chaperoning, resulting in initiation of signal transduction and significant physiological events in both tumor and tumor microenvironment. An additional area of recent progress in Hsp90 research is in studies of the posttranslational modifications of Hsp90 itself and Hsp90 co-chaperone proteins. Together, a picture is emerging in which the impact of Hsp90 inhibitors is shaped by the tumor intracellular and extracellular milieu, and in which Hsp90 inhibitors impact tumor and host on a microenvironmental and systems level. Here we review the tumor intrinsic and extrinsic factors that impact the efficacy of small molecules engaging the Hsp90 chaperone machine.
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Affiliation(s)
- S V Alarcon
- Medical Oncology Branch, CCR, NCI, NIH, Bldg 10, Rm 12N230, 10 Center Drive, Bethesda, MD 20816, USA
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Mandal A, Bhatia D, Bishayee A. Suppression of inflammatory cascade is implicated in methyl amooranin-mediated inhibition of experimental mammary carcinogenesis. Mol Carcinog 2013; 53:999-1010. [PMID: 23846978 DOI: 10.1002/mc.22067] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2013] [Revised: 06/02/2013] [Accepted: 06/17/2013] [Indexed: 12/13/2022]
Abstract
Breast cancer represents the second leading cause of cancer-related deaths among women worldwide and preventive therapy could reverse or delay the devastating impact of this disease. Methyl-amooranin (methyl-25-hydroxy-3-oxoolean-12-en-28-oate, AMR-Me), a novel synthetic oleanane triterpenoid, reduced the incidence and burden of 7,12-dimethylbenz(a)anthracene (DMBA)-induced mammary tumors in rats through antiproliferative and proapoptotic effects. Since chronic inflammation plays an important role in the pathogenesis of breast cancer and several synthetic oleanane compounds are known potent anti-inflammatory agents, we aim to investigate anti-inflammatory mechanisms of AMR-Me by monitoring various proinflammatory and stress markers, such as cyclooxygenase-2 (COX-2) and heat shock protein 90 (HSP90), and nuclear factor-κB (NF-κB) signaling during DMBA mammary tumorigenesis in rats. Mammary tumors were harvested from a chemopreventive study in which AMR-Me (0.8-1.6 mg/kg) was found to inhibit mammary carcinogenesis in a dose-response manner. The expressions of COX-2, HSP90, NF-κB, and inhibitory κB-α (IκB-α) were determined by immunohistochemistry and reverse transcription-polymerase chain reaction. AMR-Me downregulated the expression of intratumor COX-2 and HSP90, suppressed the degradation of IκB-α, and reduced the translocation of NF-κB from cytosol to nucleus. Our present study provides the first in vivo evidence that NF-κB-evoked inflammatory cascade is a major target of AMR-Me in breast cancer. Our current results together with our previous findings suggest that disruption of NF-κB signaling contributes to anti-inflammatory, antiproliferative, and apoptosis-inducing mechanisms involved in AMR-Me-mediated chemoprevention of rat mammary carcinogenesis. These encouraging mechanistic results coupled with a safety profile should facilitate the clinical development of AMR-Me as breast cancer chemopreventive drug.
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Affiliation(s)
- Animesh Mandal
- Department of Pharmaceutical Sciences College of Pharmacy, Northeast Ohio Medical University, Rootstown, Ohio
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Barabutis N, Handa V, Dimitropoulou C, Rafikov R, Snead C, Kumar S, Joshi A, Thangjam G, Fulton D, Black SM, Patel V, Catravas JD. LPS induces pp60c-src-mediated tyrosine phosphorylation of Hsp90 in lung vascular endothelial cells and mouse lung. Am J Physiol Lung Cell Mol Physiol 2013; 304:L883-93. [PMID: 23585225 DOI: 10.1152/ajplung.00419.2012] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Heat shock protein 90 (Hsp90) inhibitors were initially developed as anticancer agents; however, it is becoming increasing clear that they also possess potent anti-inflammatory properties. Posttranslational modifications of Hsp90 have been reported in tumors and have been hypothesized to affect client protein- and inhibitor-binding activities. In the present study we investigated the posttranslational modification of Hsp90 in inflammation. LPS, a prototypical inflammatory agent, induced concentration- and time-dependent tyrosine (Y) phosphorylation of Hsp90α and Hsp90β in bovine pulmonary arterial and human lung microvascular endothelial cells (HLMVEC). Mass spectrometry identified Y309 as a major site of Y phosphorylation on Hsp90α (Y300 of Hsp90β). LPS-induced Hsp90 phosphorylation was prevented by the Hsp90 inhibitor 17-allyl-amino-demethoxy-geldanamycin (17-AAG) in vitro as well as in lungs from LPS-treated mice, in vivo. Furthermore, 17-AAG prevented LPS-induced pp60src activation. LPS-induced Hsp90 phosphorylation was also prevented by the pp60src inhibitor PP2. Additionally, Hsp90 phosphorylation was induced by infecting cells with a constitutively active pp60src adenovirus, whereas either a dominant-negative pp60src adenovirus or reduced expression of pp60src by a specific siRNA prevented the LPS-induced Y phosphorylation of Hsp90. Transfection of HLMVEC with the nonphosphorylatable Hsp90β Y300F mutant prevented LPS-induced Hsp90β tyrosine phosphorylation but not pp60src activation. Furthermore, the Hsp90β Y300F mutant showed a reduced ability to bind the Hsp90 client proteins eNOS and pp60src and HLMVEC transfected with the mutant exhibited reduced LPS-induced barrier dysfunction. We conclude that inflammatory stimuli cause posttranslational modifications of Hsp90 that are Hsp90-inhibitor sensitive and may be important to the proinflammatory actions of Hsp90.
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Affiliation(s)
- Nektarios Barabutis
- Vascular Biology Center, Medical College of Georgia, Georgia Regents University, Augusta, GA 30912, USA
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Tsai MJ, Hsu YL, Wu KY, Yang RC, Chen YJ, Yu HS, Kuo PL. Heat Effect Induces Production of Inflammatory Cytokines Through Heat Shock Protein 90 Pathway in Cornea Cells. Curr Eye Res 2013; 38:464-71. [DOI: 10.3109/02713683.2012.763103] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Identification of regulators of the innate immune response to cytosolic DNA and retroviral infection by an integrative approach. Nat Immunol 2012; 14:179-85. [PMID: 23263557 DOI: 10.1038/ni.2509] [Citation(s) in RCA: 85] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2012] [Accepted: 11/28/2012] [Indexed: 02/07/2023]
Abstract
The innate immune system senses viral DNA that enters mammalian cells, or in aberrant situations self-DNA, and triggers type I interferon production. Here we present an integrative approach that combines quantitative proteomics, genomics and small molecule perturbations to identify genes involved in this pathway. We silenced 809 candidate genes, measured the response to dsDNA and connected resulting hits with the known signaling network. We identified ABCF1 as a critical protein that associates with dsDNA and the DNA-sensing components HMGB2 and IFI204. We also found that CDC37 regulates the stability of the signaling molecule TBK1 and that chemical inhibition of the CDC37-HSP90 interaction and several other pathway regulators potently modulates the innate immune response to DNA and retroviral infection.
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Miao YL, Niu JK, Zhou LF, Tong MX. Construction of a eukaryotic expression plasmid encoding the human HSF2 gene and its expression in Caco-2 cells. Shijie Huaren Xiaohua Zazhi 2012; 20:2453-2459. [DOI: 10.11569/wcjd.v20.i26.2453] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To construct a eukaryotic expression plasmid encoding the human heat shock factor 2 (HSF2) gene and to examine its expression and localization in Caco-2 cells, a human colon adenocarcinoma cell line using FLAG tag as a reporter.
METHODS: The coding sequence of the HSF2 gene was amplified by PCR using human HSF2 cDNA as the template and subcloned into pCMV-Myc vector after digestion with EcoR I and Knp I. After the identity of recombinant plasmid was verified by direct sequencing, the plasmid was transfected into Caco-2 cells using Lipofectamine. Total RNA was extracted, reverse transcribed into cDNA, and tested by PCR. The expression of HSF2 and the recombinant fusion protein in Caco-2 cells was detected by Western blot. The expression and localization of HSF2 and the recombinant fusion protein in Caco-2 cells were observed by laser scanning confocal microscopy.
RESULTS: The coding sequence of the HSF2 gene was successfully inserted into the pCMV-Myc vector. Restriction enzyme digestion analysis showed that the length of the insert was 1557 bp, matching the expected size. The mRNA level of HSF2 in cells transfected with the recombinant plasmid was higher than those in non-transfected cells and cells transfected with empty vector. The expression of recombinant HSF2-FLAG fusion protein, which had a molecular weight of 70 kDa, was detected by Western blot. The expression of HSF2 in cells transfected with the recombinant plasmid increased dramatically in comparison with matched groups. The HSF2 and recombinant HSF2-FLAG protein were localized predominantly to the cytoplasm but partially aggregated around the nuclear envelope in Caco-2 cells.
CONCLUSION: The recombinant plasmid pCMV-HSF2-FLAG has been successfully constructed, which provides the basis for further study of possible roles of HSF2 in ulcerative colitis.
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Shimp SK, Chafin CB, Regna NL, Hammond SE, Read MA, Caudell DL, Rylander M, Reilly CM. Heat shock protein 90 inhibition by 17-DMAG lessens disease in the MRL/lpr mouse model of systemic lupus erythematosus. Cell Mol Immunol 2012; 9:255-66. [PMID: 22543833 DOI: 10.1038/cmi.2012.5] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Elevated expression of heat shock protein 90 (HSP90) has been found in kidneys and serum of systemic lupus erythematosus (SLE) patients and MRL/Mp-Fas(lpr)/Fas(lpr) (MRL/lpr) autoimmune mice. We investigated if inhibition of HSP90 would reduce disease in MRL/lpr mice. In vitro, pretreatment of mesangial cells with HSP90 inhibitor Geldanamycin prior to immune-stimulation showed reduced expression of IL-6, IL-12 and NO. In vivo, we found HSP90 expression was elevated in MRL/lpr kidneys when compared to C57BL/6 mice and MRL/lpr mice treated with HSP90 inhibitor 17-DMAG. MRL/lpr mice treated with 17-DMAG showed decreased proteinuria and reduced serum anti-dsDNA antibody production. Glomerulonephritis and glomerular IgG and C3 were not significantly affected by administration of 17-DMAG in MRL/lpr. 17-DMAG increased CD8(+) T cells, reduced double-negative T cells, decreased the CD4/CD8 ratio and reduced follicular B cells. These studies suggest that HSP90 may play a role in regulating T-cell differentiation and activation and that HSP90 inhibition may reduce inflammation in lupus.
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Affiliation(s)
- Samuel K Shimp
- Virginia Tech-Wake Forest School of Biomedical Engineering and Science, Virginia Polytechnic Institute and State University, Blacksburg, VA 21061, USA.
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