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Li L, Wang YW, Chang X, Chen JL, Wang M, Zhu JQ, Li JF, Ren LJ, Dai XY, Yan L, Fan XC, Song Q, Zhu JB, Chen JK, Xu SG. DNAJA1‑knockout alleviates heat stroke‑induced endothelial barrier disruption via improving thermal tolerance and suppressing the MLCK‑MLC signaling pathway. Mol Med Rep 2024; 29:87. [PMID: 38551163 PMCID: PMC10995657 DOI: 10.3892/mmr.2024.13211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Accepted: 03/04/2024] [Indexed: 04/02/2024] Open
Abstract
Endothelial barrier disruption plays a key role in the pathophysiology of heat stroke (HS). Knockout of DNAJA1 (DNAJA1‑KO) is thought to be protective against HS based on a genome‑wide CRISPR‑Cas9 screen experiment. The present study aimed to illustrate the function of DNAJA1‑KO against HS in human umbilical vein endothelial cells. DNAJA1‑KO cells were infected using a lentivirus to investigate the role of DNAJA1‑KO in HS‑induced endothelial barrier disruption. It was shown that DNAJA1‑KO could ameliorate decreased cell viability and increased cell injury, according to the results of Cell Counting Kit‑8 and lactate dehydrogenase assays. Moreover, HS‑induced endothelial cell apoptosis was inhibited by DNAJA1‑KO, as indicated by Annexin V‑FITC/PI staining and cleaved‑caspase‑3 expression using flow cytometry and western blotting, respectively. Furthermore, the endothelial barrier function, as measured by transepithelial electrical resistance and FITC‑Dextran, was sustained during HS. DNAJA1‑KO was not found to have a significant effect on the expression and distribution of cell junction proteins under normal conditions without HS. However, DNAJA1‑KO could effectively protect the HS‑induced decrease in the expression and distribution of cell junction proteins, including zonula occludens‑1, claudin‑5, junctional adhesion molecule A and occludin. A total of 4,394 proteins were identified using proteomic analysis, of which 102 differentially expressed proteins (DEPs) were activated in HS‑induced wild‑type cells and inhibited by DNAJA1‑KO. DEPs were investigated by enrichment analysis, which demonstrated significant enrichment in the 'calcium signaling pathway' and associations with vascular‑barrier regulation. Furthermore, the 'myosin light‑chain kinase (MLCK)‑MLC signaling pathway' was proven to be activated by HS and inhibited by DNAJA1‑KO, as expected. Moreover, DNAJA1‑KO mice and a HS mouse model were established to demonstrate the protective effects on endothelial barrier in vivo. In conclusion, the results of the present study suggested that DNAJA1‑KO alleviates HS‑induced endothelial barrier disruption by improving thermal tolerance and suppressing the MLCK‑MLC signaling pathway.
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Affiliation(s)
- Lei Li
- Department of Emergency, Changhai Hospital, Naval Medical University, Shanghai 200433, P.R. China
- Department of Emergency, The Second Naval Hospital of Southern Theater Command of The People's Liberation Army, Sanya, Hainan 572022, P.R. China
- Heatstroke Treatment and Research Center, Hainan Hospital, Chinese People's Liberation Army General Hospital, Sanya, Hainan 572022, P.R. China
| | - Ya-Wei Wang
- Department of Emergency, Changhai Hospital, Naval Medical University, Shanghai 200433, P.R. China
- Department of Orthopedics Trauma, Changhai Hospital, Shanghai 200433, P.R. China
| | - Xin Chang
- Department of Gastroenterology, Changhai Hospital, Shanghai 200433, P.R. China
| | - Jue-Lin Chen
- Department of Emergency, Changhai Hospital, Naval Medical University, Shanghai 200433, P.R. China
| | - Man Wang
- Department of Rehabilitation, Changhai Hospital, Shanghai 200433, P.R. China
| | - Jia-Qi Zhu
- Department of Cardiology, Changhai Hospital, Shanghai 200433, P.R. China
| | - Jin-Feng Li
- Department of Health Toxicology, Faculty of Naval Medicine, Naval Medical University, Shanghai 200433, P.R. China
| | - Li-Jun Ren
- Department of Health Toxicology, Faculty of Naval Medicine, Naval Medical University, Shanghai 200433, P.R. China
| | - Xiao-Yu Dai
- Department of Health Toxicology, Faculty of Naval Medicine, Naval Medical University, Shanghai 200433, P.R. China
| | - Lang Yan
- Department of Health Toxicology, Faculty of Naval Medicine, Naval Medical University, Shanghai 200433, P.R. China
| | - Xin-Chen Fan
- College of Basic Medical Sciences, Naval Medical University, Shanghai 200433, P.R. China
| | - Qing Song
- Heatstroke Treatment and Research Center, Hainan Hospital, Chinese People's Liberation Army General Hospital, Sanya, Hainan 572022, P.R. China
- Department of Critical Care Medicine, First Medical Center, Chinese People's Liberation Army General Hospital, Beijing 100039, P.R. China
- Department of Critical Care Medicine, Hainan Hospital, Chinese People's Liberation Army General Hospital, Sanya, Hainan 572022, P.R. China
| | - Jiang-Bo Zhu
- Department of Health Toxicology, Faculty of Naval Medicine, Naval Medical University, Shanghai 200433, P.R. China
| | - Ji-Kuai Chen
- Department of Health Toxicology, Faculty of Naval Medicine, Naval Medical University, Shanghai 200433, P.R. China
| | - Shuo-Gui Xu
- Department of Emergency, Changhai Hospital, Naval Medical University, Shanghai 200433, P.R. China
- Department of Orthopedics Trauma, Changhai Hospital, Shanghai 200433, P.R. China
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Mahasneh ZMH, Abuajamieh M, Abedal-Majed MA, Al-Qaisi M, Abdelqader A, Al-Fataftah ARA. Effects of medical plants on alleviating the effects of heat stress on chickens. Poult Sci 2024; 103:103391. [PMID: 38242055 PMCID: PMC10828596 DOI: 10.1016/j.psj.2023.103391] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Revised: 12/13/2023] [Accepted: 12/15/2023] [Indexed: 01/21/2024] Open
Abstract
Over the past decades, global climate change has led to a significant increase in the average ambient temperature causing heat stress (HS) waves. This increase has resulted in more frequent heat waves during the summer periods. HS can have detrimental effects on poultry, including growth retardation, imbalance in immune/antioxidant pathways, inflammation, intestinal dysfunction, and economic losses in the poultry industry. Therefore, it is crucial to find an effective, safe, applicable, and economically efficient method for reducing these negative influences. Medicinal plants (MPs) contain various bioactive compounds with antioxidant, antimicrobial, anti-inflammatory, and immunomodulatory effects. Due to the biological activities of MPs, it could be used as promising thermotolerance agents in poultry diets during HS conditions. Nutritional supplementation with MPs has been shown to improve growth performance, antioxidant status, immunity, and intestinal health in heat-exposed chickens. As a result, several types of herbs have been supplemented to mitigate the harmful effects of heat stress in chickens. Therefore, several types of herbs have been supplemented to mitigate the harmful effects of heat stress in chickens. This review aims to discuss the negative consequences of HS in poultry and explore the use of different traditional MPs to enhance the health status of chickens.
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Affiliation(s)
- Zeinab M H Mahasneh
- Department of Animal Production, School of Agriculture, the University of Jordan, Amman, 11942, Jordan.
| | - Mohannad Abuajamieh
- Department of Animal Production, School of Agriculture, the University of Jordan, Amman, 11942, Jordan
| | - Mohamed A Abedal-Majed
- Department of Animal Production, School of Agriculture, the University of Jordan, Amman, 11942, Jordan
| | - Mohmmad Al-Qaisi
- Department of Animal Production, School of Agriculture, the University of Jordan, Amman, 11942, Jordan
| | - Anas Abdelqader
- Department of Animal Production, School of Agriculture, the University of Jordan, Amman, 11942, Jordan
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Contreras-Méndez LA, Medrano JF, Thomas MG, Enns RM, Speidel SE, Luna-Nevárez G, López-Castro PA, Rivera-Acuña F, Luna-Nevárez P. The Anti-Müllerian Hormone as Endocrine and Molecular Marker Associated with Reproductive Performance in Holstein Dairy Cows Exposed to Heat Stress. Animals (Basel) 2024; 14:213. [PMID: 38254382 PMCID: PMC10812537 DOI: 10.3390/ani14020213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Revised: 12/30/2023] [Accepted: 01/05/2024] [Indexed: 01/24/2024] Open
Abstract
Anti-Müllerian hormone (AMH) is proposed as a biomarker for fertility in cattle, yet this associative relationship appears to be influenced by heat stress (HS). The objective was to test serum AMH and AMH-related single nucleotide polymorphisms (SNPs) as markers potentially predictive of reproductive traits in dairy cows experiencing HS. The study included 300 Holstein cows that were genotyped using BovineSNP50 (54,000 SNP). A genome-wide association study was then executed. Nine intragenic SNPs within the pathways that influence the AMH gene were found important with multiple comparisons adjustment tests (p < 1.09 × 10-6). A further validation study was performed in an independent Holstein cattle population, which was divided into moderate (MH; n = 152) and severe heat-stressed (SH; n = 128) groups and then subjected to a summer reproductive management program. Serum AMH was confirmed as a predictor of fertility measures (p < 0.05) in MH but not in the SH group. Cows were genotyped, which revealed four SNPs as predictive markers for serum AMH (p < 0.01), reproductive traits (p < 0.01), and additional physiological variables (p < 0.05). These SNPs were in the genes AMH, IGFBP1, LGR5, and TLR4. In conclusion, serum AMH concentrations and AMH polymorphisms are proposed as predictive markers that can be used in conjunction with genomic breeding value approaches to improve reproductive performance in Holstein cows exposed to summer HS conditions.
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Affiliation(s)
- Luis A. Contreras-Méndez
- Departamento de Ciencias Agronómicas y Veterinarias, Instituto Tecnológico de Sonora, Ciudad Obregón 85000, Mexico
| | - Juan F. Medrano
- Department of Animal Science, University of California, Davis, CA 95616, USA
| | | | - R. Mark Enns
- Department of Animal Sciences, Colorado State University, Fort Collins, CO 80523, USA
| | - Scott E. Speidel
- Department of Animal Sciences, Colorado State University, Fort Collins, CO 80523, USA
| | - Guillermo Luna-Nevárez
- Departamento de Ciencias Agronómicas y Veterinarias, Instituto Tecnológico de Sonora, Ciudad Obregón 85000, Mexico
| | - Pedro A. López-Castro
- Departamento de Ciencias Agronómicas y Veterinarias, Instituto Tecnológico de Sonora, Ciudad Obregón 85000, Mexico
| | - Fernando Rivera-Acuña
- Departamento de Ciencias Agronómicas y Veterinarias, Instituto Tecnológico de Sonora, Ciudad Obregón 85000, Mexico
| | - Pablo Luna-Nevárez
- Departamento de Ciencias Agronómicas y Veterinarias, Instituto Tecnológico de Sonora, Ciudad Obregón 85000, Mexico
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Chiu MH, Gershkovich B, Yu IL, O'Brien ER, Deng J, McDonald B. Heat shock protein 27 in the pathogenesis of COVID-19 and non-COVID acute respiratory distress syndrome. Cell Stress Chaperones 2023; 28:877-887. [PMID: 37966617 PMCID: PMC10746647 DOI: 10.1007/s12192-023-01381-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2023] [Revised: 09/04/2023] [Accepted: 09/11/2023] [Indexed: 11/16/2023] Open
Abstract
Acute respiratory distress syndrome (ARDS) is a common cause of hypoxemic respiratory failure in intensive care units that has increased dramatically as a result of the COVID-19 pandemic. In both COVID-19 and non-COVID ARDS, the pathogenesis of lung injury involves local (pulmonary) and systemic inflammation, leading to impaired gas exchange, requirement for mechanical ventilation, and a high risk of mortality. Heat shock protein 27 (HSP27) is a chaperone protein expressed in times of cell stress with roles in modulation of systemic inflammation via the NF-κB pathway. Given its important role as a modulator of inflammation, we sought to investigate the role of HSP27 and its associated auto-antibodies in ARDS caused by both SARS-CoV-2 and non-COVID etiologies. A total of 68 patients admitted to the intensive care unit with ARDS requiring mechanical ventilation were enrolled in a prospective, observational study that included 22 non-COVID-19 and 46 COVID-19 patients. Blood plasma levels of HSP27, anti-HSP27 auto-antibody (AAB), and cytokine profiles were measured on days 1 and 3 of ICU admission along with clinical outcome measures. Patients with COVID-19 ARDS displayed significantly higher levels of HSP27 in plasma, and a higher ratio of HSP27:AAB on both day 1 and day 3 of ICU admission. In patients with COVID-19, higher levels of circulating HSP27 and HSP27:AAB ratio were associated with a more severe systemic inflammatory response and adverse clinical outcomes including more severe hypoxemic respiratory failure. These findings implicate HSP27 as a marker of advanced pathogenesis of disease contributing to the dysregulated systemic inflammation and worse clinical outcomes in COVID-19 ARDS, and therefore may represent a potential therapeutic target.
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Affiliation(s)
- Michael H Chiu
- Libin Cardiovascular Institute of Alberta, Department of Cardiac Sciences, University of Calgary, Calgary, Canada.
- Department of Critical Care Medicine, University of Calgary, Calgary, Canada.
- Cumming School of Medicine, University of Calgary, Calgary, AB, Canada.
| | | | - Ian-Ling Yu
- Department of Critical Care Medicine, University of Calgary, Calgary, Canada
- Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
- Snyder Institute for Chronic Diseases, Cumming School of Medicine, University of Calgary, Calgary, Canada
| | - Edward R O'Brien
- Libin Cardiovascular Institute of Alberta, Department of Cardiac Sciences, University of Calgary, Calgary, Canada
| | - Jingti Deng
- Libin Cardiovascular Institute of Alberta, Department of Cardiac Sciences, University of Calgary, Calgary, Canada
| | - Braedon McDonald
- Department of Critical Care Medicine, University of Calgary, Calgary, Canada
- Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
- Snyder Institute for Chronic Diseases, Cumming School of Medicine, University of Calgary, Calgary, Canada
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5
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Li K, Abdelsattar MM, Gu M, Zhao W, Liu H, Li Y, Guo P, Huang C, Fang S, Gan Q. The Effects of Temperature and Humidity Index on Growth Performance, Colon Microbiota, and Serum Metabolome of Ira Rabbits. Animals (Basel) 2023; 13:1971. [PMID: 37370481 DOI: 10.3390/ani13121971] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2023] [Revised: 05/16/2023] [Accepted: 05/16/2023] [Indexed: 06/29/2023] Open
Abstract
This study investigates the effects of different THI values on growth performance, intestinal microbes, and serum metabolism in meat rabbits. The results showed that there were significant differences in THI in different location regions of the rabbit house. The high-THI group (HG) could significantly reduce average daily gain and average daily feed intake in Ira rabbits (p < 0.05). The low-THI group (LG) significantly increased the relative abundance of Blautia (p < 0.05). The HG significantly increased the relative abundance of Lachnospiraceae NK4A136 group and reduced bacterial community interaction (p < 0.05). The cytokine-cytokine receptor interactions, nuclear factor kappa B signaling pathway, and toll-like receptor signaling pathway in each rabbit's gut were activated when the THI was 26.14 (p < 0.05). Metabolic pathways such as the phenylalanine, tyrosine, and tryptophan biosynthesis and phenylalanine metabolisms were activated when the THI was 27.25 (p < 0.05). Meanwhile, the TRPV3 and NGF genes that were associated with heat sensitivity were significantly upregulated (p < 0.05). In addition, five metabolites were found to be able to predict THI levels in the environment with an accuracy of 91.7%. In summary, a THI of 26.14 is more suitable for the growth of meat rabbits than a THI of 27.25, providing a reference for the efficient feeding of meat rabbits.
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Affiliation(s)
- Keyao Li
- College of Animal Science (College of Bee Science), Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Mahmoud M Abdelsattar
- Department of Animal and Poultry Production, Faculty of Agriculture, South Valley University, Qena 83523, Egypt
| | - Mingming Gu
- College of Animal Science (College of Bee Science), Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Wei Zhao
- Key Laboratory of Feed Biotechnology of the Ministry of Agriculture and Rural Affairs, Institute of Feed Research of Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Haoyu Liu
- College of Animal Science (College of Bee Science), Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Yafei Li
- College of Animal Science (College of Bee Science), Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Pingting Guo
- College of Animal Science (College of Bee Science), Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Caiyun Huang
- College of Animal Science (College of Bee Science), Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Shaoming Fang
- College of Animal Science (College of Bee Science), Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Qianfu Gan
- College of Animal Science (College of Bee Science), Fujian Agriculture and Forestry University, Fuzhou 350002, China
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6
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Weaver SRC, Rendeiro C, Lucas RAI, Cable NT, Nightingale TE, McGettrick HM, Lucas SJE. Non-pharmacological interventions for vascular health and the role of the endothelium. Eur J Appl Physiol 2022. [PMID: 36149520 DOI: 10.1007/s00421-022-05041-y.pmid:36149520;pmcid:pmc9613570] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/26/2023]
Abstract
The most common non-pharmacological intervention for both peripheral and cerebral vascular health is regular physical activity (e.g., exercise training), which improves function across a range of exercise intensities and modalities. Numerous non-exercising approaches have also been suggested to improved vascular function, including repeated ischemic preconditioning (IPC); heat therapy such as hot water bathing and sauna; and pneumatic compression. Chronic adaptive responses have been observed across a number of these approaches, yet the precise mechanisms that underlie these effects in humans are not fully understood. Acute increases in blood flow and circulating signalling factors that induce responses in endothelial function are likely to be key moderators driving these adaptations. While the impact on circulating factors and environmental mechanisms for adaptation may vary between approaches, in essence, they all centre around acutely elevating blood flow throughout the circulation and stimulating improved endothelium-dependent vascular function and ultimately vascular health. Here, we review our current understanding of the mechanisms driving endothelial adaptation to repeated exposure to elevated blood flow, and the interplay between this response and changes in circulating factors. In addition, we will consider the limitations in our current knowledge base and how these may be best addressed through the selection of more physiologically relevant experimental models and research. Ultimately, improving our understanding of the unique impact that non-pharmacological interventions have on the vasculature will allow us to develop superior strategies to tackle declining vascular function across the lifespan, prevent avoidable vascular-related disease, and alleviate dependency on drug-based interventions.
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Affiliation(s)
- Samuel R C Weaver
- School of Sport, Exercise and Rehabilitation Sciences, College of Life and Environmental Sciences, University of Birmingham, Birmingham, UK.
- Centre for Human Brain Health, University of Birmingham, Birmingham, UK.
| | - Catarina Rendeiro
- School of Sport, Exercise and Rehabilitation Sciences, College of Life and Environmental Sciences, University of Birmingham, Birmingham, UK
- Centre for Human Brain Health, University of Birmingham, Birmingham, UK
| | - Rebekah A I Lucas
- School of Sport, Exercise and Rehabilitation Sciences, College of Life and Environmental Sciences, University of Birmingham, Birmingham, UK
| | - N Timothy Cable
- Institute of Sport, Manchester Metropolitan University, Manchester, UK
| | - Tom E Nightingale
- School of Sport, Exercise and Rehabilitation Sciences, College of Life and Environmental Sciences, University of Birmingham, Birmingham, UK
| | - Helen M McGettrick
- Institute of Inflammation and Ageing, College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK
| | - Samuel J E Lucas
- School of Sport, Exercise and Rehabilitation Sciences, College of Life and Environmental Sciences, University of Birmingham, Birmingham, UK
- Centre for Human Brain Health, University of Birmingham, Birmingham, UK
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7
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Eom JS, Park DS, Lee SJ, Gu BH, Lee SJ, Lee SS, Kim SH, Kim BW, Lee SS, Kim M. Metabolomic and transcriptomic study to understand changes in metabolic and immune responses in steers under heat stress. ANIMAL NUTRITION 2022; 11:87-101. [PMID: 36189376 PMCID: PMC9483736 DOI: 10.1016/j.aninu.2022.06.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Revised: 05/22/2022] [Accepted: 06/23/2022] [Indexed: 11/27/2022]
Abstract
Heat stress (HS) damages livestock by adversely affecting physiological and immunological functions. However, fundamental understanding of the metabolic and immunological mechanisms in animals under HS remains elusive, particularly in steers. To understand the changes on metabolic and immune responses in steers under HS condition, we performed RNA-sequencing and proton nuclear magnetic resonance spectroscopy-based metabolomics on HS-free (THI value: 64.92 ± 0.56) and HS-exposed (THI value: 79.13 ± 0.56) Jersey steer (n = 8, body weight: 559.67 ± 32.72 kg). This study clarifies the metabolic changes in 3 biofluids (rumen fluid, serum, and urine) and the immune responses observed in the peripheral blood mononuclear cells of HS-exposed steers. This integrated approach allowed the discovery of HS-sensitive metabolic and immunological pathways. The metabolomic analysis indicated that HS-exposed steers showed potential HS biomarkers such as isocitrate, formate, creatine, and riboflavin (P < 0.05). Among them, there were several integrative metabolic pathways between rumen fluid and serum. Furthermore, HS altered mRNA expression and immune-related signaling pathways. A meta-analysis revealed that HS decreased riboflavin metabolism and the expression of glyoxylate and dicarboxylate metabolism-related genes. Moreover, metabolic pathways, such as the hypoxia-inducible factor-1 signaling pathway, were downregulated in immune cells by HS (P < 0.05). These findings, along with the datasets of pathways and phenotypic differences as potential biomarkers in steers, can support more in-depth research to elucidate the inter-related metabolic and immunological pathways. This would help suggest new strategies to ameliorate the effects of HS, including disease susceptibility and metabolic disorders, in Jersey steers.
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Affiliation(s)
- Jun Sik Eom
- Institute of Agriculture and Life Science, Gyeongsang National University, Jinju, 52828, Republic of Korea
| | - Da Som Park
- Department of Animal Science, College of Natural Resources & Life Science, Pusan National University, Miryang, 50463, Republic of Korea
| | - Sang Jin Lee
- Department of Animal Science, College of Natural Resources & Life Science, Pusan National University, Miryang, 50463, Republic of Korea
| | - Bon-Hee Gu
- Life and Industry Convergence Research Institute, Pusan National University, Miryang, 50463, Republic of Korea
| | - Shin Ja Lee
- Institute of Agriculture and Life Science, Gyeongsang National University, Jinju, 52828, Republic of Korea
- University-Centered Labs, Gyeongsang National University, Jinju, 52828, Republic of Korea
| | - Sang-Suk Lee
- Ruminant Nutrition and Anaerobe Laboratory, Department of Animal Science and Technology, Sunchon National University, Suncheon, 57922, Republic of Korea
| | - Seon-Ho Kim
- Ruminant Nutrition and Anaerobe Laboratory, Department of Animal Science and Technology, Sunchon National University, Suncheon, 57922, Republic of Korea
| | - Byeong-Woo Kim
- Department of Animal Science, College of Natural Resources & Life Science, Pusan National University, Miryang, 50463, Republic of Korea
| | - Sung Sill Lee
- Institute of Agriculture and Life Science, Gyeongsang National University, Jinju, 52828, Republic of Korea
- University-Centered Labs, Gyeongsang National University, Jinju, 52828, Republic of Korea
- Division of Applied Life Science (BK21), Gyeongsang National University, Jinju, 52828, Republic of Korea
- Corresponding authors.
| | - Myunghoo Kim
- Department of Animal Science, College of Natural Resources & Life Science, Pusan National University, Miryang, 50463, Republic of Korea
- Life and Industry Convergence Research Institute, Pusan National University, Miryang, 50463, Republic of Korea
- Corresponding authors.
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Heltberg M, von Borries M, Bendix PM, Oddershede LB, Jensen MH. Temperature Controls Onset and Period of NF-κB Oscillations and can Lead to Chaotic Dynamics. Front Cell Dev Biol 2022; 10:910738. [PMID: 35794861 PMCID: PMC9251302 DOI: 10.3389/fcell.2022.910738] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Accepted: 05/18/2022] [Indexed: 12/01/2022] Open
Abstract
The transcription factor NF-κB plays a vital role in the control of the immune system, and following stimulation with TNF-α its nuclear concentration shows oscillatory behaviour. How environmental factors, in particular temperature, can control the oscillations and thereby affect gene stimulation is still remains to be resolved question. In this work, we reveal that the period of the oscillations decreases with increasing temperature. We investigate this using a mathematical model, and by applying results from statistical physics, we introduce temperature dependency to all rates, resulting in a remarkable correspondence between model and experiments. Our model predicts how temperature affects downstream protein production and find a crossover, where high affinity genes upregulates at high temperatures. Finally, we show how or that oscillatory temperatures can entrain NF-κB oscillations and lead to chaotic dynamics presenting a simple path to chaotic conditions in cellular biology.
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Huang W, Mao L, Xie W, Cai S, Huang Q, Liu Y, Chen Z. Impact of UCP2 depletion on heat stroke-induced mitochondrial function in human umbilical vein endothelial cells. Int J Hyperthermia 2022; 39:287-296. [PMID: 35129048 DOI: 10.1080/02656736.2022.2032846] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
Affiliation(s)
- Wei Huang
- The First School of Clinical Medicine, Southern Medical University, Guangzhou, P.R. China
- Department of Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, P.R. China
| | - Liangfeng Mao
- The First School of Clinical Medicine, Southern Medical University, Guangzhou, P.R. China
- Department of Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, P.R. China
| | - Weidang Xie
- Department of Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, P.R. China
| | - Sumin Cai
- Department of Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, P.R. China
| | - Qiaobing Huang
- Guangdong Provincial Key Lab of Shock and Microcirculation, Department of Pathophysiology, Southern Medical University, Guangzhou, P.R. China
| | - Yanan Liu
- Department of Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, P.R. China
| | - Zhongqing Chen
- The First School of Clinical Medicine, Southern Medical University, Guangzhou, P.R. China
- Department of Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, P.R. China
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10
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Wang S, Wang A, Zhang Y, Zhu K, Wang X, Chen Y, Wu J. The role of MAPK11/12/13/14 (p38 MAPK) protein in dopamine agonist-resistant prolactinomas. BMC Endocr Disord 2021; 21:235. [PMID: 34814904 PMCID: PMC8609849 DOI: 10.1186/s12902-021-00900-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/19/2021] [Accepted: 11/08/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Prolactinoma is a functional pituitary adenoma that secretes excessive prolactin. Dopamine agonists (DAs) such as bromocriptine (BRC) are the first-line treatment for prolactinomas, but the resistance rate is increasing year by year, creating a clinical challenge. Therefore, it is urgent to explore the molecular mechanism of bromocriptine resistance in prolactinomas. Activation of the P38 MAPK pathway affects multidrug resistance in tumours. Our previous studies have demonstrated that inhibiting MAPK14 can suppress the occurrence of prolactinoma, but the role of MAPK11/12/13/14 (p38 MAPK) signalling in dopamine agonist-resistant prolactinomas is still unclear. METHODS A prolactinoma rat model was established to determine the effect of bromocriptine on MAPK11/12/13/14 signalling. DA-resistant GH3 cells and DA-sensitive MMQ cells were used, and the role of MAPK11/12/13/14 in bromocriptine-resistant prolactinomas was preliminarily verified by western blot, RT-qPCR, ELISA, flow cytometry and CCK-8 experiments. The effects of MAPK11 or MAPK14 on bromocriptine-resistant prolactinomas were further verified by siRNA transfection experiments. RESULTS Bromocriptine was used to treat rat prolactinoma by upregulating DRD2 expression and downregulating the expression level of MAPK11/12/13/14 in vivo experiments. The in vitro experiments showed that GH3 cells are resistant to bromocriptine and that MMQ cells are sensitive to bromocriptine. Bromocriptine could significantly reduce the expression of MAPK12 and MAPK13 in GH3 cells and MMQ cells. Bromocriptine could significantly reduce the expression of MAPK11, MAPK14, NF-κB p65 and Bcl2 in MMQ but had no effect on MAPK11, MAPK14, NF-κB p65 and Bcl2 in GH3 cells. In addition, knockdown of MAPK11 and MAPK14 in GH3 cells by siRNA transfection reversed the resistance of GH3 cells to bromocriptine, and haloperidol (HAL) blocked the inhibitory effect of bromocriptine on MAPK14, MAPK11, and PRL in MMQ cells. Our findings show that MAPK11 and MAPK14 proteins are involved in bromocriptine resistance in prolactinomas. CONCLUSION Bromocriptine reduces the expression of MAPK11/12/13/14 in prolactinomas, and MAPK11 and MAPK14 are involved in bromocriptine resistance in prolactinomas by regulating apoptosis. Reducing the expression of MAPK11 or MAPK14 can reverse bromocriptine resistance in prolactinomas.
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Affiliation(s)
- Shuman Wang
- Central lab, Tongren Hospital Affiliated to Wuhan University, The Third Hospital of Wuhan, 241 Pengliuyang Road, Wuchang District, Wuhan, 430060, Hubei, China
- Department of Pharmacy, Tongren Hospital Affiliated to Wuhan University, The Third Hospital of Wuhan, Wuhan, 430060, Hubei, China
- College of Pharmacy, Hubei University of Chinese Medicine, Wuhan, 430065, Hubei, China
| | - Aihua Wang
- Health Examination Center, Tongren Hospital Affiliated to Wuhan University, The Third Hospital of Wuhan, 241 Pengliuyang Road, Wuchang District, Wuhan, 430060, Hubei, China
| | - Yu Zhang
- Central lab, Tongren Hospital Affiliated to Wuhan University, The Third Hospital of Wuhan, 241 Pengliuyang Road, Wuchang District, Wuhan, 430060, Hubei, China
- Department of Pharmacy, Tongren Hospital Affiliated to Wuhan University, The Third Hospital of Wuhan, Wuhan, 430060, Hubei, China
- College of Pharmacy, Hubei University of Chinese Medicine, Wuhan, 430065, Hubei, China
| | - Kejing Zhu
- Central lab, Tongren Hospital Affiliated to Wuhan University, The Third Hospital of Wuhan, 241 Pengliuyang Road, Wuchang District, Wuhan, 430060, Hubei, China
- Department of Pharmacy, Tongren Hospital Affiliated to Wuhan University, The Third Hospital of Wuhan, Wuhan, 430060, Hubei, China
- College of Pharmacy, Hubei University of Chinese Medicine, Wuhan, 430065, Hubei, China
| | - Xiong Wang
- Central lab, Tongren Hospital Affiliated to Wuhan University, The Third Hospital of Wuhan, 241 Pengliuyang Road, Wuchang District, Wuhan, 430060, Hubei, China
- Department of Pharmacy, Tongren Hospital Affiliated to Wuhan University, The Third Hospital of Wuhan, Wuhan, 430060, Hubei, China
| | - Yonggang Chen
- Department of Pharmacy, Tongren Hospital Affiliated to Wuhan University, The Third Hospital of Wuhan, Wuhan, 430060, Hubei, China
| | - Jinhu Wu
- Central lab, Tongren Hospital Affiliated to Wuhan University, The Third Hospital of Wuhan, 241 Pengliuyang Road, Wuchang District, Wuhan, 430060, Hubei, China.
- Department of Pharmacy, Tongren Hospital Affiliated to Wuhan University, The Third Hospital of Wuhan, Wuhan, 430060, Hubei, China.
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11
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Xie W, Huang W, Cai S, Chen H, Fu W, Chen Z, Liu Y. NF‑κB/IκBα signaling pathways are essential for resistance to heat stress‑induced ROS production in pulmonary microvascular endothelial cells. Mol Med Rep 2021; 24:814. [PMID: 34558646 PMCID: PMC8477608 DOI: 10.3892/mmr.2021.12454] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2021] [Accepted: 09/10/2021] [Indexed: 12/14/2022] Open
Abstract
The results of a previous study demonstrated that heat stress (HS) triggered oxidative stress, which in turn induced the apoptosis of epithelial cells. These results uncovered a novel mechanism underlying the activation of NF-κB in primary human umbilical vein endothelial cells. The present study aimed to further investigate the role of NF-κB/IκBα signaling pathways in the inhibition of HS-induced reactive oxygen species (ROS) generation and cytotoxicity in endothelial cells. The results of the present study demonstrated that HS triggered a significant amount of NF-κB and IκBα nuclear translocation without IκBα degradation in a time-dependent manner. Mutant constructs of IκBα phosphorylation sites (Ser32, Ser36) were employed in rat pulmonary microvascular endothelial cells (PMVECs). Cell Counting Kit-8 assays demonstrated that both the small interfering (si)RNA-mediated knockdown of p65 and IκBα mutant constructs significantly decreased cell viability and aggravated ROS accumulation in HS-induced rat PMVECs compared with the control. Additionally, western blot analysis revealed that p65 siRNA attenuated the protein expression of IκBα. However, IκBα mutant constructs failed to attenuate NF-κB activation and nuclear translocation, indicating that IκBα-independent pathways contributed to NF-κB activity and nucleus translocation in a time-dependent manner following HS. Collectively, the results of the present study suggested that the NF-κB/IκBα pathway was essential for resistance to HS-induced ROS production and cytotoxicity in rat PMVECs, and that it could be a potential therapeutic target to reduce the mortality and morbidity of heat stroke.
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Affiliation(s)
- Weidang Xie
- Department of Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
| | - Wei Huang
- Department of Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
| | - Shumin Cai
- Department of Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
| | - Hui Chen
- Department of Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
| | - Weijun Fu
- Department of Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
| | - Zhongqing Chen
- Department of Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
| | - Yanan Liu
- Department of Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
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12
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The Role of Klotho Protein Against Sevoflurane-Induced Neuronal Injury. Neurochem Res 2021; 47:315-326. [PMID: 34498160 DOI: 10.1007/s11064-021-03444-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Revised: 08/07/2021] [Accepted: 08/31/2021] [Indexed: 10/20/2022]
Abstract
The effects of general anesthetics on the developing brain have aroused much attention in recent years. Sevoflurane, a commonly used inhalation anesthetic especially in pediatric anesthesia, can induce developmental neurotoxicity. In this study, the differentially expressed mRNAs in the hippocampus of newborn rats exposed to 3% sevoflurane for 6 h were detected by RNA-Sequencing. Those data indicated that the mRNA of Klotho was increased after exposure to sevoflurane. Moreover, the protein expression of Klotho was assayed by Western Blot. Besides over-expression and under-expression of Klotho protein, we also detected changes of cell proliferation, ROS, JC-1, and Bcl-2/Bax ratio in PC12 cells exposed to sevoflurane. After exposure to 3% sevoflurane, the expression of Klotho protein increased in the hippocampus of neonatal rats. In PC12 cells, exposure to sevoflurane could increase cellular ROS level, reduce mitochondrial membrane potential and Bcl-2/Bax ratio. While overexpression of Klotho alleviated the above changes, knockdown of Klotho aggravated the injury of sevoflurane. Klotho protein could reduce oxidative stress and mitochondrial injury induced by sevoflurane in the neuron.
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13
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Liu J, Xu S, Liu S, Chen B. miR‑3613‑3p/MAP3K2/p38/caspase‑3 pathway regulates the heat‑stress‑induced apoptosis of endothelial cells. Mol Med Rep 2021; 24:633. [PMID: 34278472 PMCID: PMC8280962 DOI: 10.3892/mmr.2021.12272] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Accepted: 05/11/2021] [Indexed: 11/20/2022] Open
Abstract
Previous studies have identified microRNA (miRNA/miR)-3613-3p as a heat stress (HS)-related miRNA in endothelial cells that can lead to apoptosis. However, the mechanism underlying the miR-3613-3p-mediated apoptosis of HS-exposed endothelial cells remains unclear. In the present study, western blot analysis and reverse transcription-quantitative PCR were used to determine protein and miRNA expression levels, respectively. Annexin V-fluorescein isothiocyanate/propidium iodide staining, caspase-3 activity measurements and DNA fragmentation assays were performed to detect apoptosis. To evaluate whether mitogen-activated protein kinase kinase kinase 2 (MAP3K2) was a direct target of miR-3613-3p, a luciferase reporter assay was performed. In addition, transient transfection was used to carry out loss- and gain-of-function experiments. The results revealed that miR-3613-3p expression was reduced in human umbilical vein endothelial cells (HUVECs) following HS, which led to apoptosis. Mechanistically, following HS, a decrease in miR-3613-3p binding to the 3′-untranslated region of MAP3K2 directly upregulated its expression, and the downstream p38 and caspase-3 pathways, thereby leading to apoptosis. Taken together, the results of the present study demonstrated that HS suppressed miR-3613-3p expression, which activated the MAP3K2/p38/caspase-3 pathway, leading to the apoptosis of HUVECs. In conclusion, the miR-3613-3p/MAP3K2/p38/caspase-3 pathway may serve an indispensable role in regulating the progression of apoptosis, indicating a regulatory role of miR-3613-3p in the pathophysiology of HS-exposed endothelial cells.
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Affiliation(s)
- Jie Liu
- Department of Intensive Care Unit, Hefei Boe Hospital Co., Ltd., Hefei, Anhui 230011, P.R. China
| | - Siya Xu
- Department of Emergency, Central Theater General Hospital of The People's Liberation Army of China, Wuhan, Hubei 430070, P.R. China
| | - Shixin Liu
- Department of Emergency, Central Theater General Hospital of The People's Liberation Army of China, Wuhan, Hubei 430070, P.R. China
| | - Bingguan Chen
- Department of General Surgery, Hefei Boe Hospital Co., Ltd., Hefei, Anhui 230011, P.R. China
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14
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Song DQ, Liu J, Wang F, Li XF, Liu MH, Zhang Z, Cao SS, Jiang X. Procyanidin B2 inhibits lipopolysaccharide‑induced apoptosis by suppressing the Bcl‑2/Bax and NF‑κB signalling pathways in human umbilical vein endothelial cells. Mol Med Rep 2021; 23:267. [PMID: 33576443 PMCID: PMC7893691 DOI: 10.3892/mmr.2021.11906] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Accepted: 01/04/2021] [Indexed: 12/23/2022] Open
Abstract
Human umbilical vein endothelial cells (HUVECs) serve a critical role in maintaining normal vascular function. Lipopolysaccharide (LPS), which is released from pathogenic bacteria in the blood, induces HUVEC apoptosis and injury to cause vascular dysfunction and infectious vascular diseases. Procyanidin B2 (PB2) possesses numerous functions, including antioxidant, antitumor, anti‑inflammatory and antiapoptosis effects, but the molecular mechanism is not completely understood. The present study investigated the effects of PB2 on LPS‑induced cytotoxicity and apoptosis in HUVECs, as well as the underlying mechanisms. The effects of PB2 on LPS‑mediated alterations to cytotoxicity, mitochondrial membrane potential, apoptosis were assessed by performing Cell Counting Kit‑8, JC‑1 fluorescence, Hoechst 33258 staining assays, respectively. IL‑1β, IL‑6 and TNF‑α mRNA expression and protein levels were measured by performing reverse transcription‑quantitative PCR and ELISAs, respectively. Bcl‑2, Bax, cleaved caspase‑3, cleaved caspase‑7, cleaved caspase‑9, phosphorylated (p)‑IκB‑α, p‑IκB‑β, p‑NF‑κB‑p65 and total NF‑κB p65 protein expression levels were determined via western blotting. NF‑κB p65 nuclear translocation was assessed via immunofluorescence. PB2 pretreatment markedly attenuated LPS‑induced cytotoxicity and apoptosis in HUVECs. PB2 also significantly downregulated the expression levels of IL‑1β, IL‑6, TNF‑α, Bax, cleaved caspase‑3, cleaved caspase‑7, cleaved caspase‑9 and p‑NF‑κB‑p65, but upregulated the expression levels of Bcl‑2, p‑IκB‑α and p‑IκB‑β in LPS‑induced HUVECs. Moreover, PB2 markedly inhibited LPS‑induced NF‑κB p65 nuclear translocation in HUVECs. The results suggested that the potential molecular mechanism underlying PB2 was associated with the Bax/Bcl‑2 and NF‑κB signalling pathways. Therefore, PB2 may serve as a useful therapeutic for infectious vascular diseases.
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Affiliation(s)
- Da-Qiang Song
- Department of Pharmacy, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan 646000, P.R. China
| | - Jiao Liu
- Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan 646000, P.R. China
| | - Fang Wang
- Department of Pharmaceutical Analysis, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan 646000, P.R. China
| | - Xiao-Fang Li
- Department of Pharmacy, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan 646000, P.R. China
| | - Ming-Hua Liu
- Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan 646000, P.R. China
| | - Zhuo Zhang
- Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan 646000, P.R. China
| | - Shou-Song Cao
- Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan 646000, P.R. China
| | - Xian Jiang
- Department of Anesthesiology, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan 646000, P.R. China
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15
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Cai GL, Yang ZX, Guo DY, Hu CB, Yan ML, Yan J. Macrophages enhance lipopolysaccharide induced apoptosis via Ang1 and NF-κB pathways in human umbilical vein endothelial cells. Sci Rep 2021; 11:2918. [PMID: 33536546 PMCID: PMC7858588 DOI: 10.1038/s41598-021-82531-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Accepted: 01/20/2021] [Indexed: 01/17/2023] Open
Abstract
Lipopolysaccharide (LPS) could induce apoptosis and dysfunction of endothelial cells. We aimed to reveal the effects of macrophages on cell proliferation and apoptosis in LPS induced human umbilical vein endothelial cells (HUVECs). THP-1 derived macrophages and HUVECs were co-cultured in the presence of LPS. Cell viability was measured by Cell Counting Kit-8 and apoptosis was analyzed by flow cytometry. Expression of Ang1, the NF-κB component p65 was evaluated by western blot and quantitative PCR. Small interfering RNAs (siRNAs) were used to knockdown the expression of proinflammatory cytokines and p65 in HUVECs. Plasmid transfection-mediated overexpression of Ang1 was employed to see its effects on cell proliferation and apoptosis in HUVECs. Macrophages enhanced LPS-induced proliferation impairments and apoptosis in HUVECs, which could be attenuated by siRNA-mediated knockdown of cytokines TNF-α, IL-1β, IL-6 and IL-12p70 in macrophages. The dysfunction of HUVECs was tightly associated with reduced Ang1 expression and increased phosphorylated p65 (p-65). Overexpression of Ang1 in HUVECs significantly decreased p-p65, suggesting negatively regulation of p-p65 by Ang1. Overexpression of Ang1, adding recombinant Ang1 or silencing of p65 substantially attenuated the dysfunction of HUVECs in terms of cell proliferation and apoptosis. In conclusions, THP-1-derived macrophages enhance LPS induced dysfunction of HUVECs via Ang1 and NF-κB pathways, suggesting new therapeutic targets for sepsis.
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Affiliation(s)
- Guo-Long Cai
- Department of Critical Care Medicine, Zhejiang Hospital, Hangzhou, 310013, Zhejiang, China
| | - Zhou-Xin Yang
- Department of Critical Care Medicine, Zhejiang Hospital, Hangzhou, 310013, Zhejiang, China.
| | - Dong-Yang Guo
- Department of Critical Care Medicine, Zhejiang Hospital, Hangzhou, 310013, Zhejiang, China
| | - Cai-Bao Hu
- Department of Critical Care Medicine, Zhejiang Hospital, Hangzhou, 310013, Zhejiang, China
| | - Mo-Lei Yan
- Department of Critical Care Medicine, Zhejiang Hospital, Hangzhou, 310013, Zhejiang, China
| | - Jing Yan
- Department of Critical Care Medicine, Zhejiang Hospital, Hangzhou, 310013, Zhejiang, China.
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16
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Gu H, Li J, Zhang R. Melatonin upregulates DNA-PKcs to suppress apoptosis of human umbilical vein endothelial cells via inhibiting miR-101 under H 2O 2-induced oxidative stress. Mol Cell Biochem 2020; 476:1283-1292. [PMID: 33226571 DOI: 10.1007/s11010-020-03991-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2020] [Accepted: 11/16/2020] [Indexed: 02/07/2023]
Abstract
Melatonin has been implicated in inhibiting oxidative stress-induced apoptosis of endothelial cells. However, the underlying mechanism remains poorly understood. In this study, we examined the effect of melatonin on apoptosis of human umbilical vein endothelial cells (HUVECs) induced by H2O2 and explored the underlying mechanisms. Our results demonstrated that DNA-dependent protein kinase catalytic subunit (DNA-PKcs) upregulation contributed to the protective role of melatonin in HUVECs under oxidative stress with H2O2. Further study showed that melatonin treatment led to a decreased level of miRNA-101, which could be responsible for DNA-PKcs upregulation and DNA-PKcs-mediated apoptosis inhibition in HUVECs under oxidative stress with H2O2. Our results also showed that melatonin increased the activity of PI3K/AKT and DNA-PKcs knockdown in melatonin-treated HUVECs that lead to inactivation of PI3K/AKT signaling under oxidative stress with H2O2. Furthermore, blockade of PI3K/AKT signal with LY294002 significantly reduced melatonin-induced apoptosis inhibition in H2O2-treated HUVECs. Taken together, our findings identify a miR-101/DNA-PKcs/PI3K/AKT signaling pathway in melatonin-induced endothelial cell apoptosis inhibition under oxidative stress with H2O2.
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Affiliation(s)
- Hao Gu
- Department of Pediatrics, The Affiliated Huaian No.1 People's Hospital of Nanjing Medical University, No.1 the Yellow River West Road, Huaiyin District, Huai'an, Jiangsu, 223300, People's Republic of China
| | - Jian Li
- Department of Anesthesiology, The Affiliated Huaian No.1 People's Hospital of Nanjing Medical University, Huai'an, Jiangsu, 223300, People's Republic of China
| | - Rongrong Zhang
- Department of Pediatrics, The Affiliated Huaian No.1 People's Hospital of Nanjing Medical University, No.1 the Yellow River West Road, Huaiyin District, Huai'an, Jiangsu, 223300, People's Republic of China.
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17
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Apoptotic exosome-like vesicles regulate endothelial gene expression, inflammatory signaling, and function through the NF-κB signaling pathway. Sci Rep 2020; 10:12562. [PMID: 32724121 PMCID: PMC7387353 DOI: 10.1038/s41598-020-69548-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Accepted: 07/06/2020] [Indexed: 12/19/2022] Open
Abstract
Persistent endothelial injury promotes maladaptive responses by favoring the release of factors leading to perturbation in vascular homeostasis and tissue architecture. Caspase-3 dependent death of microvascular endothelial cells leads to the release of unique apoptotic exosome-like vesicles (ApoExo). Here, we evaluate the impact of ApoExo on endothelial gene expression and function in the context of a pro-apoptotic stimulus. Endothelial cells exposed to ApoExo differentially express genes involved in cell death, inflammation, differentiation, and cell movement. Endothelial cells exposed to ApoExo showed inhibition of apoptosis, improved wound closure along with reduced angiogenic activity and reduced expression of endothelial markers consistent with the first phase of endothelial-to-mesenchymal transition (endoMT). ApoExo interaction with endothelial cells also led to NF-κB activation. NF-κB is known to participate in endothelial dysfunction in numerous diseases. Silencing NF-κB reversed the anti-apoptotic effect and the pro-migratory state and prevented angiostatic properties and CD31 downregulation in endothelial cells exposed to ApoExo. This study identifies vascular injury-derived extracellular vesicles (ApoExo) as novel drivers of NF-κB activation in endothelial cells and demonstrates the pivotal role of this signaling pathway in coordinating ApoExo-induced functional changes in endothelial cells. Hence, targeting ApoExo-mediated NF-κB activation in endothelial cells opens new avenues to prevent endothelial dysfunction.
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18
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Huang W, Xie W, Gong J, Wang W, Cai S, Huang Q, Chen Z, Liu Y. Heat stress induces RIP1/RIP3-dependent necroptosis through the MAPK, NF-κB, and c-Jun signaling pathways in pulmonary vascular endothelial cells. Biochem Biophys Res Commun 2020; 528:206-212. [PMID: 32471717 DOI: 10.1016/j.bbrc.2020.04.150] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2020] [Accepted: 04/29/2020] [Indexed: 01/30/2023]
Abstract
Necroptosis represents a newly defined form of regulated necrosis and participates in various human inflammatory diseases. It remains unclear whether necroptosis is presented in heatstroke-induced lung injury. We show that heat stress(HS) triggered an significant upregulation of receptor-interacting protein 1 (RIP1) and mixed lineage kinase domain-like protein (MLKL) expression in a time-dependent manner, without a significant change of receptor-interacting protein 3 (RIP3). Furthermore, co-immunoprecipitation assays showed that RIP1 binds to RIP3 to form the necrosome in heat stress-induced PMVECs. In vitro, necrostatin-1 (Nec-1) pre-treatment reduced heat stress-induced PMVECs necroptosis, which also inhibited HMGB1 translocation from the nucleus into the cytoplasm. Similarly, inhibition for ERK (PD98059), NF-κB (BAY11-7082) and c-Jun (c-Jun peptide), respectively, also suppressed the HMGB1 cytoplasm translocation. Furthermore, siRNA-mediated RIP1/RIP3 knockdown negatively regulated the release of HMGB1 in HS-induced necroptosis through the ERK, NF-κB, and c-Jun signaling pathways. Our study reveals that HS induces RIP1/RIP3-dependent necroptosis through the MAPK, NF-κB, and c-Jun signaling pathways in PMVECs.
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Affiliation(s)
- Wei Huang
- Department of Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China; The First School of Clinical Medicine, Southern Medical University, Guangzhou, 510515, China
| | - Weidang Xie
- Department of Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Jian Gong
- The First School of Clinical Medicine, Southern Medical University, Guangzhou, 510515, China; Department of Intensive Care Medicine, The Third People's Hospital of Longgang District, Shenzhen, 518115, China
| | - Wenyan Wang
- Department of Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China; The First School of Clinical Medicine, Southern Medical University, Guangzhou, 510515, China
| | - Sumin Cai
- Department of Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Qiaobing Huang
- Guangdong Provincial Key Lab of Shock and Microcirculation, Department of Pathophysiology, Southern Medical University, Guangzhou, 510515, China
| | - Zhongqing Chen
- Department of Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Yanan Liu
- Department of Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China.
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Orlowski SK, Cauble R, Tabler T, Hiltz JZ, Greene ES, Anthony NB, Dridi S. Processing evaluation of random bred broiler populations and a common ancestor at 55 days under chronic heat stress conditions. Poult Sci 2020; 99:3491-3500. [PMID: 32616244 PMCID: PMC7597841 DOI: 10.1016/j.psj.2020.03.036] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2019] [Revised: 01/24/2020] [Accepted: 03/20/2020] [Indexed: 11/18/2022] Open
Abstract
As a result of genetic selection, the modern broiler is more efficient, higher yielding, and faster growing than the bird of the 1950s. Unfortunately, as a result of improvement in growth rate, the modern broiler has the potential to struggle under heat stress conditions. The present study evaluates 3 different random bred populations and a common ancestor under both a thermal neutral and heat stress conditions after a 54-D grow-out period. The lines used in this study included the Athens Canadian Random Bred (ACRB), a 1995 Random Bred (95RAN), a 2015 Random Bred (MRB), and a Junglefowl (JF). Male chicks (n = 150/line) were placed by line in environmentally controlled chambers. An 8-h daily cyclic heat stress (36°C) was applied to half of the chambers beginning on day 28 (HS) and lasting until processing at day 55, while the remaining chambers remained thermal neutral (TN) at 26°C. Dock weights and carcass weights were lower in the HS-95RAN and HS-MRB, compared to their TN counterparts, while the ACRB and JF had no difference in dock and carcass weights regardless of environmental condition. The MRB line had the highest breast yield (27.79%) while the JF (12.79%) and ACRB (12.42%) had the lowest. The 95RAN line had the highest abdominal fat percentage (2.83%) while the MRB line had the lowest moisture uptake during chill. The HS exposure lowered overall breast yield and breast pH at 15 min and 4 h postmortem but did not have an impact on color (L∗) or 24 h breast drip loss. The MRB was scored for both woody breast and white striping. The TN-MRB group had a higher incidence of moderate and severe woody breast and white striping than the HS-MRB group. Based on the results of this study, it appears that HS has a greater negative impact on the higher yielding lines (MRB and 95RAN) than the ACRB and JF and that clear line differences exist between the random bred lines and their common ancestor.
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Affiliation(s)
- S K Orlowski
- Division of Agriculture, University of Arkansas, Fayetteville, Arkansas 72701, USA.
| | - R Cauble
- Division of Agriculture, University of Arkansas, Fayetteville, Arkansas 72701, USA
| | - T Tabler
- Division of Agriculture, University of Arkansas, Fayetteville, Arkansas 72701, USA
| | - J Z Hiltz
- Division of Agriculture, University of Arkansas, Fayetteville, Arkansas 72701, USA
| | - E S Greene
- Division of Agriculture, University of Arkansas, Fayetteville, Arkansas 72701, USA
| | - N B Anthony
- Division of Agriculture, University of Arkansas, Fayetteville, Arkansas 72701, USA
| | - S Dridi
- Division of Agriculture, University of Arkansas, Fayetteville, Arkansas 72701, USA
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Sen A, Ta M. Altered Adhesion and Migration of Human Mesenchymal Stromal Cells under Febrile Temperature Stress Involves NF-κβ Pathway. Sci Rep 2020; 10:4473. [PMID: 32161303 PMCID: PMC7066177 DOI: 10.1038/s41598-020-61361-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Accepted: 02/18/2020] [Indexed: 11/23/2022] Open
Abstract
Mesenchymal stromal cells (MSCs) are clinically beneficial for regenerative treatment of chronic inflammation and autoimmune disorders. However, to attain maximum efficacy from the transplanted MSCs, evaluation of its interaction with the microenvironment, becomes critical. Fever being an important hallmark of inflammation, we investigated the effect of febrile temperature stress on adhesion and migration of umbilical cord-derived MSCs. 40 °C-exposure altered cellular morphology with significant cell flattening, delayed cell-matrix de-adhesion response and slower migration of MSCs, accompanied by suppressed directionality ratio and cell trajectory. Corresponding to the observed changes, mRNA expression of extracellular matrix genes like COLs and VTN were upregulated, while matrix metalloproteinase MMP-1, showed a significant downregulation. NF-κβ pathway inhibition at 40 °C, led to reversal of gene expression pattern, cell spreading, de-adhesion dynamics and migration rate. Independent knockdown of p65 and p53 at 40 °C indicated inhibitory role of p65/p53/p21 axis in regulation of MMP-1 expression. P21 inhibits JNK activity, and JNK pathway inhibition at 40 °C resulted in further downregulation of MMP-1. Hence, our study provides the first evidence of cell migration getting adversely affected in MSCs under elevated temperature stress due to an inverse relationship between p65/p53/p21 and MMP1 with a possible involvement of the JNK pathway.
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Affiliation(s)
- Ankita Sen
- Indian Institute of Science Education and Research, Kolkata, India
| | - Malancha Ta
- Indian Institute of Science Education and Research, Kolkata, India.
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21
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Gao J, Kang XY, Sun S, Li L, Gao DS. MES23.5 DA Immortalized Neuroblastoma Cells Self-protect Against Early Injury by Overexpressing Glial Cell–derived Neurotrophic Factor via Akt1/Eya1/Six2 Signaling. J Mol Neurosci 2019; 70:328-339. [DOI: 10.1007/s12031-019-01416-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2019] [Accepted: 10/10/2019] [Indexed: 01/26/2023]
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22
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Wang Q, Jiang H, Wang L, Yi H, Li Z, Liu R. Vitegnoside Mitigates Neuronal Injury, Mitochondrial Apoptosis, and Inflammation in an Alzheimer’s Disease Cell Model via the p38 MAPK/JNK Pathway. J Alzheimers Dis 2019; 72:199-214. [DOI: 10.3233/jad-190640] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Qian Wang
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, P. R. China
| | - Hailun Jiang
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, P. R. China
| | - Linlin Wang
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, P. R. China
| | - Hong Yi
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, P. R. China
| | - Zhuorong Li
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, P. R. China
| | - Rui Liu
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, P. R. China
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Baicalin Protects against Thrombin-Induced Cell Injury in Human Umbilical Vein Endothelial Cells. BIOMED RESEARCH INTERNATIONAL 2019; 2019:2187306. [PMID: 31467874 PMCID: PMC6699368 DOI: 10.1155/2019/2187306] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/14/2019] [Revised: 06/16/2019] [Accepted: 07/11/2019] [Indexed: 01/17/2023]
Abstract
Thrombin plays a pivotal role in the pathogenesis of atherosclerosis. Baicalin, an active flavonoid compound, was shown to attenuate the development of atherosclerosis, but the mechanism remains elusive. In the present study, the role and mechanism of baicalin in thrombin-induced cell injury was investigated in human umbilical vein endothelial cells (HUVECs). Our results showed that baicalin significantly reduced thrombin-induced apoptosis of HUVECs. Additional experiments showed that baicalin inhibited thrombin-induced NF-κB activation and PAR-1 expression. In addition, baicalin decreased thrombin-induced PAR-1 expression by inhibiting ERK pathway. These results indicated that baicalin has protective effects on thrombin-induced cell injury in HUVECs possibly through inhibition of PAR-1 expression and its downstream NF-κB activation, which was mediated by ERK1/2 activation.
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Liu J, Han X, Zhu G, Liu S, Lu Q, Tang Z. Analysis of potential functional significance of microRNA‑3613‑3p in human umbilical vein endothelial cells affected by heat stress. Mol Med Rep 2019; 20:1846-1856. [PMID: 31257536 PMCID: PMC6625459 DOI: 10.3892/mmr.2019.10376] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2018] [Accepted: 04/24/2019] [Indexed: 12/18/2022] Open
Abstract
Dysregulation of microRNA‑3613‑3p (miR‑3613‑3p) was previously reported in endothelial cells (ECs) during heat stress. The aim of the present study was to investigate the precise role of miR‑3613‑3p in heat stress. In the present study, potential gene targets of miR‑3613‑3p in heat‑treated ECs were assessed, and the potential effects of miR‑3613‑3p were determined using Gene Ontology enrichment analysis. Kyoto Encyclopedia of Genes and Genomes pathway analysis was used to identify signaling pathways that may be affected by miR‑3613‑3p in heat‑treated cells. Reverse transcription‑quantitative PCR, western blotting and annexin V‑FITC/propidium iodide staining were performed to detect miRNA expression, protein expression and apoptosis, respectively. Luciferase gene reporter assay was performed to evaluate the association between miR‑3613‑3p and mitogen‑activated protein kinase kinase kinase 2 (MAP3K2). Bioinformatics analysis revealed 865 potential gene targets for miR‑3613‑3p and a series of functions and pathways in heat‑treated ECs. 'Negative regulation of apoptotic process' was identified as a potential function of miR‑3613‑3p. In addition, functional analysis confirmed the downregulated expression levels of miR‑3613‑3p in ECs during heat stress, which was accompanied by an increase in apoptosis; restoration of miR‑3613‑3p expression inhibited apoptosis. MAP3K2 protein was demonstrated to be upregulated in heat‑treated ECs, and overexpression of miR‑3613‑3p reduced MAP3K2 expression levels. Additionally, MAP3K2 was targeted by miR‑3613‑3p. These results indicated that miR‑3613‑3p may have complicated roles in ECs under heat stress. miR‑3613‑3p may serve an important role in the apoptosis of heat‑treated ECs, and this effect may be partly achieved by targeting MAP3K2.
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Affiliation(s)
- Jie Liu
- Department of Emergency, Central Theater General Hospital of People's Liberation Army of China, Wuhan, Hubei 430070, P.R. China
| | - Xuan Han
- Department of Emergency, Central Theater General Hospital of People's Liberation Army of China, Wuhan, Hubei 430070, P.R. China
| | - Guoguo Zhu
- Department of Emergency, Central Theater General Hospital of People's Liberation Army of China, Wuhan, Hubei 430070, P.R. China
| | - Shixin Liu
- Department of Emergency, Central Theater General Hospital of People's Liberation Army of China, Wuhan, Hubei 430070, P.R. China
| | - Qiping Lu
- Department of General Surgery, Central Theater General Hospital of People's Liberation Army of China, Wuhan, Hubei 430070, P.R. China
| | - Zhongzhi Tang
- Department of Emergency, Central Theater General Hospital of People's Liberation Army of China, Wuhan, Hubei 430070, P.R. China
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25
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Li P, Wang G, Zhang XL, He GL, Luo X, Yang J, Luo Z, Shen TT, Yang XS. MicroRNA-155 Promotes Heat Stress-Induced Inflammation via Targeting Liver X Receptor α in Microglia. Front Cell Neurosci 2019; 13:12. [PMID: 30778287 PMCID: PMC6369214 DOI: 10.3389/fncel.2019.00012] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2018] [Accepted: 01/14/2019] [Indexed: 12/12/2022] Open
Abstract
Background: The neuroinflammatory responses of microglial cells play an important role in the process of brain dysfunction caused by heat stroke. MicroRNAs are reportedly involved in a complex signaling network and have been identified as neuroinflammatory regulators. In this study, we determined the biological roles of microRNA-155 in the inflammatory responses in heat-stressed microglia and explored the underlying mechanisms. Methods: MicroRNA-155 mimic and inhibitor were used to separately upregulate or downregulate microRNA-155 expression. The activation state of BV-2 microglial cells (BV-2 cells) was assessed via immunoreactions using the microglial marker CD11b and CD68. Levels of induced interleukin-1β (IL-1β), interleukin-6 (IL-6) and tumor necrosis factor-α (TNF-α) were measured using real-time reverse transcription polymerase chain reaction (RT-PCR) and enzyme linked immunosorbent assays (ELISAs). The activation of nuclear factor kappa B (NF-κB) signaling proteins was evaluated by Western blotting for inhibitory kappa B alpha (IκBα) and NF-κB p65 phosphorylation and indirect immunofluorescence analysis using a p65 phosphorylation antibody. A luciferase reporter assay was used to verify liver X receptor α (LXRα) as a target gene of microRNA-155. Results: Heat stress significantly induced IL-1β, IL-6, and TNF-α release and increased the expression of CD11b and CD68. In addition, IκBα and NF-κB p65 phosphorylation were dramatically increased by heat stress, and microRNA-155 expression was also elevated. High expression of microRNA-155 in heat-stressed microglial cells was inversely correlated with LXRα expression. We then determined the role of microRNA-155 in the heat stress-induced inflammatory responses. The results revealed that by targeting LXRα, microRNA-155 enhanced NF-κB signaling activation and facilitated immune inflammation in heat stress-treated BV-2 cells. Conclusion: MicroRNA-155 promotes heat stress-induced inflammatory responses in microglia. The underlying mechanisms may include facilitating inflammatory factors expression by increasing NF-κB pathway activation via targeting LXRα.
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Affiliation(s)
- Ping Li
- Laboratory of Extreme Environmental Medicine, Department of Tropical Medicine, Army Medical University, Chongqing, China
| | - Gong Wang
- Laboratory of Extreme Environmental Medicine, Department of Tropical Medicine, Army Medical University, Chongqing, China.,Department of Neurology, Xinqiao Hospital, Army Medical University, Chongqing, China
| | - Xiao-Liang Zhang
- Laboratory of Extreme Environmental Medicine, Department of Tropical Medicine, Army Medical University, Chongqing, China.,Department of Cardiology, Kunming General Hospital of Chengdu Military Command, Yunnan, China
| | - Gen-Lin He
- Laboratory of Extreme Environmental Medicine, Department of Tropical Medicine, Army Medical University, Chongqing, China
| | - Xue Luo
- Laboratory of Extreme Environmental Medicine, Department of Tropical Medicine, Army Medical University, Chongqing, China
| | - Ju Yang
- Laboratory of Extreme Environmental Medicine, Department of Tropical Medicine, Army Medical University, Chongqing, China
| | - Zhen Luo
- Laboratory of Extreme Environmental Medicine, Department of Tropical Medicine, Army Medical University, Chongqing, China
| | - Ting-Ting Shen
- Laboratory of Extreme Environmental Medicine, Department of Tropical Medicine, Army Medical University, Chongqing, China
| | - Xue-Sen Yang
- Laboratory of Extreme Environmental Medicine, Department of Tropical Medicine, Army Medical University, Chongqing, China
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26
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Liu L, Zhao Z, Lu L, Liu J, Sun J, Wu X, Dong J. Icariin and icaritin ameliorated hippocampus neuroinflammation via inhibiting HMGB1-related pro-inflammatory signals in lipopolysaccharide-induced inflammation model in C57BL/6 J mice. Int Immunopharmacol 2019; 68:95-105. [PMID: 30616172 DOI: 10.1016/j.intimp.2018.12.055] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2018] [Revised: 12/12/2018] [Accepted: 12/24/2018] [Indexed: 12/14/2022]
Abstract
Inflammation is a defensive response of the body and is at the center of many diseases' process like depression. High mobility group protein box 1 (HMGB1), has been proved to function as a pro-inflammatory cytokine. We aim to explore the role of HMGB1 played in the neuroinflammation here. In this study, we used LPS to induce an acute inflammatory response, and to measure the anti-neuroinflammation effect of icariin (ICA) and icaritin (ICT). We found that LPS could increase the expression of HMGB1 in serum and hippocampus, along with a high expression of HMGB1 in the cytoplasm and a high expression of RAGE, which could be rescued by ICA and ICT, and ethyl pyruvate (EP) pretreatment showed similar effects here. We speculated that the translocation of HMGB1 from the nucleus to the cytoplasm played an important role in neuroinflammatory process, and HMGB1-RAGE signal was involved in this process. Furthermore, we found that ICA and ICT treatment activated TLR4-XBP1s related NF-κB signal, which we thought was relevant with the neuroprotective effect of ICA and ICT. However, EP pretreatment suppressed TLR4-XBP1s- endoplasmic reticulum stress related NF-κB signal to anti-inflammatory response, which was almost absolutely opposite with ICA and ICT treatment. We speculated that it might be caused by the duration of inflammation. We supposed that ICA and ICT could ameliorate neuroinflammation in hippocampus via suppressing HMGB1-RAGE signaling and might show a neuroprotective effect via activating TLR4-XBP1s related NF-κB signal at the same time, making it possible to act as an anti-neuroinflammatory drugs.
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Affiliation(s)
- Lumei Liu
- Department of Integrative Medicine, Huashan Hospital, Fudan University, Shanghai 200040, PR China; Institutes of Integrative Medicine, Fudan University, Shanghai 200040, PR China
| | - Zhengxiao Zhao
- Department of Integrative Medicine, Huashan Hospital, Fudan University, Shanghai 200040, PR China; Institutes of Integrative Medicine, Fudan University, Shanghai 200040, PR China
| | - Linwei Lu
- Department of Integrative Medicine, Huashan Hospital, Fudan University, Shanghai 200040, PR China; Institutes of Integrative Medicine, Fudan University, Shanghai 200040, PR China
| | - Jiaqi Liu
- Department of Integrative Medicine, Huashan Hospital, Fudan University, Shanghai 200040, PR China; Institutes of Integrative Medicine, Fudan University, Shanghai 200040, PR China
| | - Jing Sun
- Department of Integrative Medicine, Huashan Hospital, Fudan University, Shanghai 200040, PR China; Institutes of Integrative Medicine, Fudan University, Shanghai 200040, PR China
| | - Xiao Wu
- The Respiratory Department of the TCM Hospital of Jiangsu, Nanjing 210000, PR China
| | - Jingcheng Dong
- Department of Integrative Medicine, Huashan Hospital, Fudan University, Shanghai 200040, PR China; Institutes of Integrative Medicine, Fudan University, Shanghai 200040, PR China.
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27
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Liu ZF, Ji JJ, Zheng D, Su L, Peng T. Calpain-2 protects against heat stress-induced cardiomyocyte apoptosis and heart dysfunction by blocking p38 mitogen-activated protein kinase activation. J Cell Physiol 2018; 234:10761-10770. [PMID: 30417356 DOI: 10.1002/jcp.27750] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2018] [Accepted: 10/22/2018] [Indexed: 12/25/2022]
Abstract
Cardiovascular dysfunction is a common complication among heatstroke patients, but its underlying mechanism is unclear. This study was designed to investigate the role of calpain-2 and its downstream signal pathway in heat stress-induced cardiomyocyte apoptosis and heart dysfunction. In cultured primary mouse neonatal cardiomyocytes (MNCs), heat stress (43°C for 2 hr) induced a heat-shock response, as indicated by upregulated heat-shock protein 27 (HSP27) expression and cellular apoptosis, as indicated by increased caspase-3 activity, DNA fragmentation and decreased cell viability. Meanwhile, heat stress decreased calpain activity, which was accompanied by downregulated calpain-2 expression and increased phosphorylation of p38, extraceIIuIar signaI-reguIated protein kinase (ERK1/2) and c-Jun N-terminaI kinase (JNK). Calpain-2 overexpression abrogated heat stress-induced apoptosis and phosphorylation of p38 and JNK, but not of ERK1/2. Blocking only p38 prevented heat stress-induced apoptosis in MNCs. In cardiac-specific calpain-2 overexpressing transgenic mice, p38 phosphorylation and cardiomyocyte apoptosis were decreased in the heart tissue of heatstroke mice, as revealed by western blot and terminal deoxynucleotidyl transferase dUTP nick end labelling assays, respectively. M-mode echocardiography also demonstrated that calpain-2 overexpression significantly improved heatstroke-induced decreases in ventricular end-diastolic volume and cardiac output. In conclusion, our study suggests that heat stress reduces calpain-2 expression, which then activates p38, leading to cardiomyocyte apoptosis and heart dysfunction.
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Affiliation(s)
- Zhi-Feng Liu
- Department of Critical Care Medicine, General Hospital of Guangzhou Military Command, Guangzhou, China.,Department of Medicine, Critical Illness Research Center, Lawson Health Research Institute, University of Western Ontario, London, Ontario, Canada.,Department of Pathology, Critical Illness Research Center, Lawson Health Research Institute, University of Western Ontario, London, Ontario, Canada
| | - Jing-Jing Ji
- Department of Critical Care Medicine, General Hospital of Guangzhou Military Command, Guangzhou, China.,Departement of Pathophysiology, Southern Medical University, Guangzhou, China
| | - Dong Zheng
- Department of Medicine, Critical Illness Research Center, Lawson Health Research Institute, University of Western Ontario, London, Ontario, Canada.,Department of Pathology, Critical Illness Research Center, Lawson Health Research Institute, University of Western Ontario, London, Ontario, Canada
| | - Lei Su
- Department of Critical Care Medicine, General Hospital of Guangzhou Military Command, Guangzhou, China.,Key Laboratory of Hot Zone Trauma Care and Tissue Repair of PLA, General Hospital of Guangzhou Military Command, Guangzhou, China
| | - Tianqing Peng
- Department of Medicine, Critical Illness Research Center, Lawson Health Research Institute, University of Western Ontario, London, Ontario, Canada.,Department of Pathology, Critical Illness Research Center, Lawson Health Research Institute, University of Western Ontario, London, Ontario, Canada
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28
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Pyroptosis of HUVECs can be induced by heat stroke. Biochem Biophys Res Commun 2018; 506:626-631. [PMID: 30454698 DOI: 10.1016/j.bbrc.2018.10.051] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2018] [Accepted: 10/07/2018] [Indexed: 11/24/2022]
Abstract
Heat stroke is a serious pathological condition with high mortality. Vascular endothelial cell injury is a key feature in the pathogenesis of heat stroke, but the specific pathophysiological process whereby this occurs is still unclear. Currently, relevant studies are primarily based upon examination of apoptosis. Recently, pyroptosis, a new form of inflammation-related programmed cell death, was also demonstrated to be involved in heat stroke pathophysiology. Herein, we present evidence that vascular endothelial cell pyroptosis can be induced by heat stress in a time- and temperature-dependent manner. Furthermore, this process can be significantly inhibited by GSDMD siRNA. These findings suggest a new therapeutic target for heat stroke.
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29
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Akbarzadeh A, Günther OP, Houde AL, Li S, Ming TJ, Jeffries KM, Hinch SG, Miller KM. Developing specific molecular biomarkers for thermal stress in salmonids. BMC Genomics 2018; 19:749. [PMID: 30326831 PMCID: PMC6192343 DOI: 10.1186/s12864-018-5108-9] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2018] [Accepted: 09/21/2018] [Indexed: 12/12/2022] Open
Abstract
Background Pacific salmon (Oncorhynchus spp.) serve as good biological indicators of the breadth of climate warming effects on fish because their anadromous life cycle exposes them to environmental challenges in both marine and freshwater environments. Our study sought to mine the extensive functional genomic studies in fishes to identify robust thermally-responsive biomarkers that could monitor molecular physiological signatures of chronic thermal stress in fish using non-lethal sampling of gill tissue. Results Candidate thermal stress biomarkers for gill tissue were identified using comparisons among microarray datasets produced in the Molecular Genetics Laboratory, Pacific Biological Station, Nanaimo, BC, six external, published microarray studies on chronic and acute temperature stress in salmon, and a comparison of significant genes across published studies in multiple fishes using deep literature mining. Eighty-two microarray features related to 39 unique gene IDs were selected as candidate chronic thermal stress biomarkers. Most of these genes were identified both in the meta-analysis of salmon microarray data and in the literature mining for thermal stress markers in salmonids and other fishes. Quantitative reverse transcription PCR (qRT-PCR) assays for 32 unique genes with good efficiencies across salmon species were developed, and their activity in response to thermally challenged sockeye salmon (O. nerka) and Chinook salmon (O. tshawytscha) (cool, 13–14 °C and warm temperatures 18–19 °C) over 5–7 days was assessed. Eight genes, including two transcripts of each SERPINH1 and HSP90AA1, FKBP10, MAP3K14, SFRS2, and EEF2 showed strong and robust chronic temperature stress response consistently in the discovery analysis and both sockeye and Chinook salmon validation studies. Conclusions The results of both discovery analysis and gene expression showed that a panel of genes involved in chaperoning and protein rescue, oxidative stress, and protein biosynthesis were differentially activated in gill tissue of Pacific salmon in response to elevated temperatures. While individually, some of these biomarkers may also respond to other stressors or biological processes, when expressed in concert, we argue that a biomarker panel comprised of some or all of these genes could provide a reliable means to specifically detect thermal stress in field-caught salmon. Electronic supplementary material The online version of this article (10.1186/s12864-018-5108-9) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Arash Akbarzadeh
- Fisheries and Oceans Canada, Pacific Biological Station, 3190 Hammond Bay Road, Nanaimo, BC, V9T 6N7, Canada. .,Department of Fisheries, Faculty of Marine Science and technology, University of Hormozgan, P.O. Box: 3995, Bandar Abbas, Iran.
| | | | - Aimee Lee Houde
- Fisheries and Oceans Canada, Pacific Biological Station, 3190 Hammond Bay Road, Nanaimo, BC, V9T 6N7, Canada
| | - Shaorong Li
- Fisheries and Oceans Canada, Pacific Biological Station, 3190 Hammond Bay Road, Nanaimo, BC, V9T 6N7, Canada
| | - Tobi J Ming
- Fisheries and Oceans Canada, Pacific Biological Station, 3190 Hammond Bay Road, Nanaimo, BC, V9T 6N7, Canada
| | - Kenneth M Jeffries
- Department of Biological Sciences, University of Manitoba, Winnipeg, MB, R3T 2N2, Canada
| | - Scott G Hinch
- Pacific Salmon Ecology and Conservation Laboratory, Department of Forest and Conservation Sciences, University of British Columbia, Vancouver, BC, V6T1Z4, Canada
| | - Kristina M Miller
- Fisheries and Oceans Canada, Pacific Biological Station, 3190 Hammond Bay Road, Nanaimo, BC, V9T 6N7, Canada
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Ali A, Biswas A, Pal M. HSF1 mediated TNF‐α production during proteotoxic stress response pioneers proinflammatory signal in human cells. FASEB J 2018; 33:2621-2635. [DOI: 10.1096/fj.201801482r] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Asif Ali
- Division of Molecular MedicineBose InstituteKolkataIndia
| | | | - Mahadeb Pal
- Division of Molecular MedicineBose InstituteKolkataIndia
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31
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Combination therapy with BH3 mimetic and hyperthermia tends to be more effective on anti-melanoma treatment. Biochem Biophys Res Commun 2018; 503:249-256. [DOI: 10.1016/j.bbrc.2018.06.010] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2018] [Accepted: 06/06/2018] [Indexed: 02/07/2023]
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32
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Wu J, Zhang W, Liu X, Wu L, He G, Li P, Guo X, Chen Z, Huang Q. Apocynin protects endothelial cells from endoplasmic reticulum stress-induced apoptosis via IRE1α engagement. Mol Cell Biochem 2018; 449:257-265. [PMID: 29696609 PMCID: PMC7088535 DOI: 10.1007/s11010-018-3362-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2017] [Accepted: 04/16/2018] [Indexed: 12/22/2022]
Abstract
Endoplasmic reticulum (ER) stress-induced endothelial cell (EC) apoptosis has been implicated in a variety of human diseases. In addition to being regarded as an NADPH oxidase (NOX) inhibitor, apocynin (APO) exhibits an anti-apoptotic effect in various cells. The present study aimed to identify the protective role of apocynin in ER stress-mediated EC apoptosis and the underlying mechanisms. We found that ER stress resulted in a significant increase in c-Jun N-terminal kinase phosphorylation, and elicited caspase 3 cleavage and apoptosis. However, apocynin obviously attenuated EC apoptosis and this effect was partly dependent on ER stress sensor inositol-requiring enzyme 1α (IRE1α). Importantly, apocynin upregulated IRE1α expression in both protein and mRNA levels and promoted the pro-survival XBP1 splicing. Our results suggest that apocynin protects ECs against ER stress-induced apoptosis via IRE1α involvement. These findings may provide a novel mechanistic explanation for the anti-apoptotic effect of apocynin in ER stress.
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Affiliation(s)
- Jie Wu
- The First School of Clinical Medicine, Southern Medical University, Guangzhou, China.,Department of Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Weijin Zhang
- The First School of Clinical Medicine, Southern Medical University, Guangzhou, China.,Department of Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Xiaohui Liu
- The First School of Clinical Medicine, Southern Medical University, Guangzhou, China
| | - Lili Wu
- Guangdong Provincial Key Laboratory of Shock and Microcirculation, School of Basic Medical Sciences, Southern Medical University, No. 1023, South Shatai Road, Guangzhou, 510515, Guangdong, China
| | - Guangting He
- The First School of Clinical Medicine, Southern Medical University, Guangzhou, China
| | - Peixin Li
- The First School of Clinical Medicine, Southern Medical University, Guangzhou, China
| | - Xiaohua Guo
- Guangdong Provincial Key Laboratory of Shock and Microcirculation, School of Basic Medical Sciences, Southern Medical University, No. 1023, South Shatai Road, Guangzhou, 510515, Guangdong, China
| | - Zhongqing Chen
- Department of Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Qiaobing Huang
- Guangdong Provincial Key Laboratory of Shock and Microcirculation, School of Basic Medical Sciences, Southern Medical University, No. 1023, South Shatai Road, Guangzhou, 510515, Guangdong, China.
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33
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Jing H, Zou G, Hao F, Wang H, Wang S. Hsp27 reduces cold ischemia-reperfusion injury in heart transplantation through regulation of NF-κB and PUMA signaling. INTERNATIONAL JOURNAL OF CLINICAL AND EXPERIMENTAL PATHOLOGY 2018; 11:281-292. [PMID: 31938111 PMCID: PMC6957943] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 11/10/2017] [Accepted: 11/22/2017] [Indexed: 06/10/2023]
Abstract
BACKGROUND AND OBJECTIVE Global myocardial ischemia-reperfusion (I/R) injury after heart transplantation is believed to impair graft function and aggravate episodes of both acute and chronic rejection. The 27-kDa heat shock protein (Hsp27) has a potent ability to alleviate I/R after cardiac transplantation. The aim of this study was to investigate the anti-I/R injury effect of Hsp27 to elucidate the underling mechanisms. METHODS Heart grafts from BALB/c mice were preserved in University of Wisconsin (UW) solution (control) or UW solution containing pAAV-Hsp27 (Hsp27 solution) at 4°C for 48 h and subsequently transplanted into syngeneic recipients for 72 h. The heart grafts were then collected for histopathological and gene expression analyses. An in vitro I/R model (H9c2 cells or H9c2/Hsp27 cells) was constructed. Then, protein and mRNA expression of Hsp27, p65, p53 upregulated modulator of apoptosis (PUMA), interleukin (IL)-6, IL-1β, and tumor necrosis factor (TNF)-α in heart tissues and H9c2 cells were detected with western blot and reverse transcription polymerase chain reaction analyses. Caspase-3 activity was detected using a commercial assay, while protein levels of IL-6, IL-1β, and TNF-α were detected using specific enzyme-linked immunosorbent assays. NF-κB activity was detected with an electrophoretic mobility shift assay. Cell apoptosis was detected with the terminal deoxynucleotidyl transferase-mediated dUTP nick-end labeling assay and flow cytometric analysis. RESULTS Cold I/R caused severe morphologic myocardial injury of heart grafts from wild type C57BL/c mice, whereas grafts from Hsp27 preservation showed less damage as demonstrated by decreased cell apoptosis/death and the preservation of the normal structure of the heart. Hsp27 inhibited I/R-induced injury as indicated by the reduction in cardiac troponin I activities and decreased cardiac tissue levels of the proinflammatory factors TNF-α, IL-1β, and IL-6. Hsp27 was further demonstrated to significantly inhibit nuclear translocation of p65 and p53 upregulated modulator of apoptosis (PUMA) expression. CONCLUSIONS These results suggested that the cardioprotective effect of Hsp27 could be due to the suppression of the myocardial inflammatory response and apoptosis by blocking the NF-κB-dependent pro-inflammatory and NF-κB-dependent PUMA signaling pathways.
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Affiliation(s)
- Hao Jing
- Department of Cardiovascular Surgery, The Affiliated Hospital of Qingdao UniversityQingdao, China
| | - Guangmei Zou
- Department of Cardiology, Yuhuangding Hospital Affiliated to Qingdao UniversityQingdao, China
| | - Fengji Hao
- Department of Cardiovascular Surgery, The Affiliated Hospital of Qingdao UniversityQingdao, China
| | - Huimin Wang
- Department of Cardiology, Yuhuangding Hospital Affiliated to Qingdao UniversityQingdao, China
| | - Shizhong Wang
- Department of Cardiovascular Surgery, The Affiliated Hospital of Qingdao UniversityQingdao, China
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Li H, Liu Y, Gu Z, Li L, Liu Y, Wang L, Su L. p38 MAPK-MK2 pathway regulates the heat-stress-induced accumulation of reactive oxygen species that mediates apoptotic cell death in glial cells. Oncol Lett 2017; 15:775-782. [PMID: 29387240 PMCID: PMC5768138 DOI: 10.3892/ol.2017.7360] [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: 05/28/2016] [Accepted: 08/15/2017] [Indexed: 11/05/2022] Open
Abstract
Previous studies have demonstratedf that heat stress can induce injury of the central nervous system and lead to neuronal cell apoptosis. However, the molecular mechanisms underlying these cellular changes remain unclear. In the present study, flow cytometry was used to investigate heat-stress-induced apoptosis, and caspase-3 activation was also assessed in neurons. The role of reactive oxygen species (ROS) accumulation in the heat-stress-induced apoptosis of neurons was demonstrated using the antioxidant drug manganese (III) tetrakis (4-benzoic acid)porphyrin. The present study presents evidence that heat stress induces mitogen-activated protein kinase (MAPK) activation in rat malignant glioma F98 cells. Following the inhibition of different MAPKs with a range of specific inhibitors, SB203580 (an inhibitor of p38 MAPK), but not PD98059 (an inhibitor of extracellular signal-regulated kinases) or SP600125 (an inhibitor of c-Jun N-terminal kinases), diminished the production of ROS and apoptosis, and prevented activation of the p38-downstream kinase MAPK-activated protein kinase 2 (MK2) in neurons. Inhibiting MK2 with dominant negative adenoviral constructs or a specific inhibitor significantly decreased normal and heat-stress-induced ROS accumulation and cell apoptosis, whereas inhibition of another kinase downstream of p38 MAPK, MAPK-activated protein kinase 5, by transfection with another adenoviral construct did not exert the same effects. Taken together, these findings indicate that heat stress stimulation induces p38-MK2 pathway activation, which exerts a pro-apoptotic effect by regulating ROS accumulation in neurons.
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Affiliation(s)
- Hongbo Li
- Graduate School Department, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China.,Department of Intensive Care Unit, The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510405, P.R. China
| | - Yanan Liu
- Department of Intensive Care Unit, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
| | - Zhengtao Gu
- Intensive Care Unit, The Third Affiliated Hospital of Southern Medical University, Guangzhou, Guangdong 510630, P.R. China
| | - Li Li
- Intensive Care Unit, The Third Affiliated Hospital of Southern Medical University, Guangzhou, Guangdong 510630, P.R. China
| | - Yunsong Liu
- Intensive Care Unit, General Hospital of Guangzhou Military Command, Key Laboratory of Tropical Zone Trauma Care and Tissue Repair of PLA, Guangzhou, Guangdong 510010, P.R. China
| | - Lin Wang
- Emergency Department, The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510405, P.R. China
| | - Lei Su
- Graduate School Department, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China.,Intensive Care Unit, General Hospital of Guangzhou Military Command, Key Laboratory of Tropical Zone Trauma Care and Tissue Repair of PLA, Guangzhou, Guangdong 510010, P.R. China
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Ji J, Gu Z, Li H, Su L, Liu Z. Cryptdin-2 predicts intestinal injury during heatstroke in mice. Int J Mol Med 2017; 41:137-146. [PMID: 29115396 PMCID: PMC5746321 DOI: 10.3892/ijmm.2017.3229] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2017] [Accepted: 10/27/2017] [Indexed: 12/15/2022] Open
Abstract
Intestinal injury-induced bacterial translocation and endotoxemia are important in the pathophysiological process of heatstroke. However, the underlying mechanism remains to be fully elucidated. Previous studies using 2D-gel electrophoresis found that defensin-related cryptdin-2 (Cry-2), an intestinal α-defensin, is upregulated in intestinal tissues during heatstroke in mice, and that treatment with ulinastatin, a multivalent enzyme inhibitor, reduced heat-induced acute lung injury. To investigate the association between Cry-2 and heat stress (HS)-induced intestinal injury and the probable protective role of ulinastatin, the present study examined the intestinal expression of Cry-2 via histopathologic analysis and reverse transcription-quantitative polymerase chain reaction analysis in mice with heatstroke. The heat-stressed mice were exposed to different core temperatures and cooling treatments, and intestinal pathological changes and Chiu scores were determined. Chemical markers of intestinal injury, serum and intestinal concentrations of diamine oxidase (DAO) and D-lactic acid (D-Lac), and serum and intestinal concentrations of Cry-2 were also determined. Correlations were analyzed using Spearman's correlation analysis. It was found that HS upregulated the expression of Cry-2, and the serum and intestinal concentrations of Cry-2 were correlated with the severity of HS-induced intestinal damage, indicated by pathology scores and concentrations of DAO and D-lac. Ulinastatin protected the intestines from HS-induced injury and downregulated the expression of Cry-2, which was also correlated with the extent of intestinal injury. Therefore, ulinastatin administration may be beneficial for patients with heatstroke, and Cry-2 may be a novel predictor of HS-induced intestinal injury.
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Affiliation(s)
- Jingjing Ji
- Department of Critical Care Medicine, General Hospital of Guangzhou Military Command, Guangzhou, Guangdong 510010, P.R. China
| | - Zhengtao Gu
- Key Laboratory of Hot Zone Trauma Care and Tissue Repair of PLA, General Hospital of Guangzhou Military Command, Guangzhou, Guangdong 510010, P.R. China
| | - Hui Li
- Key Laboratory of Hot Zone Trauma Care and Tissue Repair of PLA, General Hospital of Guangzhou Military Command, Guangzhou, Guangdong 510010, P.R. China
| | - Lei Su
- Department of Critical Care Medicine, General Hospital of Guangzhou Military Command, Guangzhou, Guangdong 510010, P.R. China
| | - Zhifeng Liu
- Department of Critical Care Medicine, General Hospital of Guangzhou Military Command, Guangzhou, Guangdong 510010, P.R. China
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Jin X, Xu Z, Fan R, Wang C, Ji W, Ma Y, Cai W, Zhang Y, Yang N, Zou S, Zhou X, Li Y. HO‑1 alleviates cholesterol‑induced oxidative stress through activation of Nrf2/ERK and inhibition of PI3K/AKT pathways in endothelial cells. Mol Med Rep 2017; 16:3519-3527. [PMID: 28713890 DOI: 10.3892/mmr.2017.6962] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2016] [Accepted: 05/22/2017] [Indexed: 11/06/2022] Open
Abstract
Heme oxygenase‑1 (HO‑1), as an inducible and cytoprotective enzyme, has a protective effect against cellular oxidative stress. In the present study, cholesterol was used to induce lipid overload and increase reactive oxygen species (ROS), leading to oxidative stress in EA.hy926 cells. In the present study, western blotting and immunofluorescence analysis were used to detect the expression level of important molecules in the metabolism process of cholesterol. It was confirmed that cholesterol stimulation upregulated the expression of HO‑1 in a time‑dependent manner via the activation and translocation of nuclear factor erythroid 2‑related factor 2 (Nrf2), activation of the mitogen‑activated protein kinase (MAPK)/extracellular signal‑regulated kinase (ERK) signaling pathway and increasing intercellular Ca2+ ([Ca2+]i) concentration. The results showed that increasing the expression of HO‑1 decreased activation of the phosphoinositide 3‑kinase (PI3K)/AKT signaling pathway and inhibited the expression of c‑Myc. It was confirmed that cholesterol‑mediated oxidative damage in vascular endothelial cells induced an increase in the expression of HO‑1 via the activation of Nrf2 and the MAPK/ERK signaling pathway, and increasing the [Ca2+]i concentration. The overexpression of HO‑1 alleviated oxidative damage through inhibition of the PI3K/AKT signaling pathway and downregulation of the expression of c‑Myc.
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Affiliation(s)
- Xiaohan Jin
- Tianjin Key Laboratory of Cardiovascular Remodeling and Target Organ Injury, Pingjin Hospital Heart Center, Logistics University of People's Armed Police Force, Tianjin 300162, P.R. China
| | - Zhongwei Xu
- Tianjin Key Laboratory of Cardiovascular Remodeling and Target Organ Injury, Pingjin Hospital Heart Center, Logistics University of People's Armed Police Force, Tianjin 300162, P.R. China
| | - Rong Fan
- Central Laboratory, Logistics University of People's Armed Police Force, Tianjin 300309, P.R. China
| | - Chengyan Wang
- Central Laboratory, Logistics University of People's Armed Police Force, Tianjin 300309, P.R. China
| | - Wenjie Ji
- Tianjin Key Laboratory of Cardiovascular Remodeling and Target Organ Injury, Pingjin Hospital Heart Center, Logistics University of People's Armed Police Force, Tianjin 300162, P.R. China
| | - Yongqiang Ma
- Tianjin Key Laboratory of Cardiovascular Remodeling and Target Organ Injury, Pingjin Hospital Heart Center, Logistics University of People's Armed Police Force, Tianjin 300162, P.R. China
| | - Wei Cai
- Tianjin Key Laboratory of Cardiovascular Remodeling and Target Organ Injury, Pingjin Hospital Heart Center, Logistics University of People's Armed Police Force, Tianjin 300162, P.R. China
| | - Yan Zhang
- Central Laboratory, Logistics University of People's Armed Police Force, Tianjin 300309, P.R. China
| | - Ning Yang
- Tianjin Key Laboratory of Cardiovascular Remodeling and Target Organ Injury, Pingjin Hospital Heart Center, Logistics University of People's Armed Police Force, Tianjin 300162, P.R. China
| | - Shuang Zou
- Central Laboratory, Logistics University of People's Armed Police Force, Tianjin 300309, P.R. China
| | - Xin Zhou
- Tianjin Key Laboratory of Cardiovascular Remodeling and Target Organ Injury, Pingjin Hospital Heart Center, Logistics University of People's Armed Police Force, Tianjin 300162, P.R. China
| | - Yuming Li
- Tianjin Key Laboratory of Cardiovascular Remodeling and Target Organ Injury, Pingjin Hospital Heart Center, Logistics University of People's Armed Police Force, Tianjin 300162, P.R. China
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Cheng Q, Zhao Y, Li J. Sodium tanshinone IIA sulfonate suppresses heat stress-induced endothelial cell apoptosis by promoting NO production through upregulating the PI3K/AKT/eNOS pathway. Mol Med Rep 2017. [PMID: 28627664 DOI: 10.3892/mmr.2017.6760] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Heat shock is a life-threatening disease involving systematic inflammation that is closely related to endothelial injury and can lead to multiple organ dysfunction syndrome. Sodium tanshinone IIA sulfonate (STS) has various functions in the vascular endothelium. In the present study, STS is presented to suppress heat stress‑induced apoptosis of human umbilical vein endothelial cells (HUVECs) and high ambient temperature‑induced systematic inflammation in Sprague Dawley rats. In addition, the STS apoptosis‑suppression mechanism was explored. The results presented in the present study demonstrated that the PI3K/AKT pathway was stimulated by STS treatment and that eNOS phosphorylation at Ser‑1177 was also upregulated, resulting in increased nitric oxide production in HUVECs under heat stress. Using specific inhibitors, the authors confirmed that STS‑induced endothelial nitric oxide synthase (eNOS) phosphorylation at Ser‑1177 was activated by protein kinase B phosphorylation at Ser‑473, involving activation of phosphatidylinositol‑3 kinase (PI3K). The results suggested that STS suppresses heat stress‑induced apoptosis of HUVECs via the PI3K/AKT/eNOS pathway and may be used in heat shock treatment as a vascular endothelial protection mechanism.
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Affiliation(s)
- Qing Cheng
- Department of Emergency, Zhongnan Hospital of Wuhan University, Wuhan, Hubei 430071, P.R. China
| | - Yan Zhao
- Department of Emergency, Zhongnan Hospital of Wuhan University, Wuhan, Hubei 430071, P.R. China
| | - Jianguo Li
- Department of Emergency, Zhongnan Hospital of Wuhan University, Wuhan, Hubei 430071, P.R. China
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The role of cPLA2 in Methylglyoxal-induced cell apoptosis of HUVECs. Toxicol Appl Pharmacol 2017; 323:44-52. [DOI: 10.1016/j.taap.2017.03.020] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2016] [Revised: 03/15/2017] [Accepted: 03/20/2017] [Indexed: 11/20/2022]
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Zhang S, Liu Y, Wang Z, Liu J, Gu Z, Xu Q, Su L. PAR1‑mediated c‑Jun activation promotes heat stress‑induced early stage apoptosis of human umbilical vein endothelial cells. Mol Med Rep 2017; 15:2595-2603. [PMID: 28447716 PMCID: PMC5428901 DOI: 10.3892/mmr.2017.6303] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2015] [Accepted: 02/02/2017] [Indexed: 12/29/2022] Open
Abstract
Our previous study indicated that when human umbilical vein endothelial cells (HUVECs), which are involved in endothelial barrier function, are heat stressed, levels of protease-activated receptor 1 (PAR1) are increased significantly. In the present study, it was demonstrated that PAR1 serves a vital role in heat stress-induced HUVEC apoptosis. When the PAR1 inhibitor, SCH79797 (SCH), or a small interfering RNA (siRNA) targeting PAR1 were used to inhibit PAR1 signaling, a marked decrease in cell apoptosis, caspase-3 activity and the expression of the pro-apoptotic protein B-cell lymphoma 2 (Bcl-2) associated X (Bax), as well as increased expression of the anti-apoptotic Bcl-2 family member, myeloid cell leukemia 1 (Mcl-1), were observed. In addition, heat stress-induced apoptosis, caspase-3 activity and the expression of Bax were significantly increased following administration of the PAR1 agonist, TFLLR-NH2 or adenovirus overexpression of PAR1. This was accompanied by decreased protein expression levels of Mcl-1. Furthermore, it was identified that the DNA binding activity of the nuclear factor (NF)-κB p65 subunit increased and c-Jun activation was reduced as a result of inhibition of PAR1 signaling by SCH or siRNA-mediated PAR1 knockdown in heat stress-induced HUVECs. Additionally, our previous study reported that NF-κB p65 activation may have an anti-apoptosis effect on heat stressed HUVECs, whereas in the present study c-Jun activation had a pro-apoptosis effect on heat stressed HUVECs. Taken together, these results indicated that PAR1 signaling-mediated c-Jun activation promotes early apoptosis of HUVEC cells induced by heat stress.
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Affiliation(s)
- Shuang Zhang
- Department of Graduate School, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
| | - Yanan Liu
- Department of Intensive Care Unit, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
| | - Zhenglian Wang
- Department of Graduate School, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510120, P.R. China
| | - Jingxian Liu
- Department of Graduate School, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
| | - Zhengtao Gu
- Department of Intensive Care Unit, The Third Affiliated Hospital of Southern Medical University, Guangzhou, Guangdong 510630, P.R. China
| | - Qiulin Xu
- Department of Intensive Care Unit, General Hospital of Guangzhou Military Command, Key Laboratory of Tropical Zone Trauma Care and Tissue Repair of People's Liberation Army, Guangzhou, Guangdong 510010, P.R. China
| | - Lei Su
- Department of Graduate School, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
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Hazra J, Mukherjee P, Ali A, Poddar S, Pal M. Engagement of Components of DNA-Break Repair Complex and NFκB in Hsp70A1A Transcription Upregulation by Heat Shock. PLoS One 2017; 12:e0168165. [PMID: 28099440 PMCID: PMC5242496 DOI: 10.1371/journal.pone.0168165] [Citation(s) in RCA: 9] [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: 08/11/2016] [Accepted: 11/26/2016] [Indexed: 12/23/2022] Open
Abstract
An involvement of components of DNA-break repair (DBR) complex including DNA-dependent protein kinase (DNA-PK) and poly-ADP-ribose polymerase 1 (PARP-1) in transcription regulation in response to distinct cellular signalling has been revealed by different laboratories. Here, we explored the involvement of DNA-PK and PARP-1 in the heat shock induced transcription of Hsp70A1A. We find that inhibition of both the catalytic subunit of DNA-PK (DNA-PKc), and Ku70, a regulatory subunit of DNA-PK holo-enzyme compromises transcription of Hsp70A1A under heat shock treatment. In immunoprecipitation based experiments we find that Ku70 or DNA-PK holoenzyme associates with NFκB. This NFκB associated complex also carries PARP-1. Downregulation of both NFκB and PARP-1 compromises Hsp70A1A transcription induced by heat shock treatment. Alteration of three bases by site directed mutagenesis within the consensus κB sequence motif identified on the promoter affected inducibility of Hsp70A1A transcription by heat shock treatment. These results suggest that NFκB engaged with the κB motif on the promoter cooperates in Hsp70A1A activation under heat shock in human cells as part of a DBR complex including DNA-PK and PARP-1.
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Affiliation(s)
- Joyita Hazra
- Division of Molecular Medicine, Bose Institute, P1/12, CIT Scheme VIIM, Kolkata, India
| | - Pooja Mukherjee
- Division of Molecular Medicine, Bose Institute, P1/12, CIT Scheme VIIM, Kolkata, India
| | - Asif Ali
- Division of Molecular Medicine, Bose Institute, P1/12, CIT Scheme VIIM, Kolkata, India
| | - Soumita Poddar
- Bioinformatics Center, Bose Institute, P1/12, CIT Scheme VIIM, Kolkata, India
| | - Mahadeb Pal
- Division of Molecular Medicine, Bose Institute, P1/12, CIT Scheme VIIM, Kolkata, India
- * E-mail:
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Nunnari G, Fagone P, Lazzara F, Longo A, Cambria D, Di Stefano G, Palumbo M, Malaguarnera L, Di Rosa M. Vitamin D3 inhibits TNFα-induced latent HIV reactivation in J-LAT cells. Mol Cell Biochem 2016; 418:49-57. [PMID: 27295094 DOI: 10.1007/s11010-016-2732-z] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2015] [Accepted: 06/08/2016] [Indexed: 12/12/2022]
Abstract
1,25-Dihydroxyvitamin D3 (1,25(OH)2D3) is known to suppress NF-kB activity by interfering with its pathways. The aim of this study was to investigate the ability of 1,25(OH)2D3 in reducing the reactivation of the HIV virus J-LAT cells, an established model of latently infected cells, which were treated with TNFalpha (100 ng/ml) for 2 h with or without 24 h 1,25(OH)2D3 (100 nM) pretreatment. Reactivation of HIV RNA in J-LAT was evaluated in terms of green fluorescent protein (GFP) expression. The same experimental setting was repeated on T cells from HIV-infected patients. Treatment with TNFalpha was associated with a 16 % increase in GFP+ cells and a five-fold increase in unspliced HIV RNA expression (p < 0.04). Pretreatment of J-LAT cells with 1,25(OH)2D3 for 24 h followed by TNFalpha (100 ng/ml) for 2 h reduced the percentage of GFP+ cells by 8 %; moreover, a 2.4-fold decrease in unspliced HIV RNA expression was observed (p < 0.002). In T cells from patients, treatment with TNFalpha significantly increased unspliced HIV RNA expression (sixfold increase, p < 0.02), whereas prestimulation with 1,25(OH)2D3 reduced its expression (2.5-fold decrease, p < 0.02) compared to controls.1,25(OH)2D3 is able to reduce the ability of TNFalpha to upregulate the transcription of HIV RNA from latently infected cells. These data provide further understanding of the pathogenic mechanisms regulating viral reactivation from latent reservoirs, along with new insight in viral internalization.
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Affiliation(s)
- G Nunnari
- Unit of Infectious Diseases, Department of Clinical and Molecular Biomedicine, University of Catania, Catania, Italy
| | - P Fagone
- Department of Biomedical and Biotechnological Sciences, University of Catania, Catania, Italy
| | - F Lazzara
- Department of Biomedical and Biotechnological Sciences, University of Catania, Catania, Italy
| | - A Longo
- Department of Biomedical and Biotechnological Sciences, University of Catania, Catania, Italy
| | - D Cambria
- Department of Biomedical and Biotechnological Sciences, University of Catania, Catania, Italy
| | - G Di Stefano
- Department of Biomedical and Biotechnological Sciences, University of Catania, Catania, Italy
| | - M Palumbo
- Department of Biomedical and Biotechnological Sciences, University of Catania, Catania, Italy
| | - L Malaguarnera
- Department of Biomedical and Biotechnological Sciences, University of Catania, Catania, Italy
| | - Michelino Di Rosa
- Department of Biomedical and Biotechnological Sciences, University of Catania, Catania, Italy.
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