1
|
Roychowdhury S, Pant B, Cross E, Scheraga R, Vachharajani V. Effect of ethanol exposure on innate immune response in sepsis. J Leukoc Biol 2024; 115:1029-1041. [PMID: 38066660 PMCID: PMC11136611 DOI: 10.1093/jleuko/qiad156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Revised: 11/08/2023] [Accepted: 11/17/2023] [Indexed: 01/06/2024] Open
Abstract
Alcohol use disorder, reported by 1 in 8 critically ill patients, is a risk factor for death in sepsis patients. Sepsis, the leading cause of death, kills over 270,000 patients in the United States alone and remains without targeted therapy. Immune response in sepsis transitions from an early hyperinflammation to persistent inflammation and immunosuppression and multiple organ dysfunction during late sepsis. Innate immunity is the first line of defense against pathogen invasion. Ethanol exposure is known to impair innate and adaptive immune response and bacterial clearance in sepsis patients. Specifically, ethanol exposure is known to modulate every aspect of innate immune response with and without sepsis. Multiple molecular mechanisms are implicated in causing dysregulated immune response in ethanol exposure with sepsis, but targeted treatments have remained elusive. In this article, we outline the effects of ethanol exposure on various innate immune cell types in general and during sepsis.
Collapse
Affiliation(s)
- Sanjoy Roychowdhury
- Department of Inflammation and Immunity, Cleveland Clinic Lerner Research Institute, 9500 Euclid Avenue, Cleveland, OH 44195, United States
| | - Bishnu Pant
- Department of Inflammation and Immunity, Cleveland Clinic Lerner Research Institute, 9500 Euclid Avenue, Cleveland, OH 44195, United States
| | - Emily Cross
- Department of Inflammation and Immunity, Cleveland Clinic Lerner Research Institute, 9500 Euclid Avenue, Cleveland, OH 44195, United States
| | - Rachel Scheraga
- Department of Inflammation and Immunity, Cleveland Clinic Lerner Research Institute, 9500 Euclid Avenue, Cleveland, OH 44195, United States
- Department of Pulmonary and Critical Care Medicine, Integrated Hospital-Care Institute, Cleveland Clinic, 9500 Euclid Avenue, Cleveland OH 44195, United States
| | - Vidula Vachharajani
- Department of Inflammation and Immunity, Cleveland Clinic Lerner Research Institute, 9500 Euclid Avenue, Cleveland, OH 44195, United States
- Department of Pulmonary and Critical Care Medicine, Integrated Hospital-Care Institute, Cleveland Clinic, 9500 Euclid Avenue, Cleveland OH 44195, United States
| |
Collapse
|
2
|
Collins CB, Nguyen TT, Leddy RS, Alula KM, Yeckes AR, Strassheim D, Aherne CM, Luck ME, Karoor V, Jedlicka P, Pierce A, de Zoeten EF. Heat shock factor 1 drives regulatory T-cell induction to limit murine intestinal inflammation. Mucosal Immunol 2024; 17:94-110. [PMID: 37944754 PMCID: PMC10953693 DOI: 10.1016/j.mucimm.2023.11.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Revised: 10/13/2023] [Accepted: 11/02/2023] [Indexed: 11/12/2023]
Abstract
The heat shock response is a critical component of the inflammatory cascade that prevents misfolding of new proteins and regulates immune responses. Activation of clusters of differentiation (CD)4+ T cells causes an upregulation of heat shock transcription factor, heat shock factor 1 (HSF1). We hypothesized that HSF1 promotes a pro-regulatory phenotype during inflammation. To validate this hypothesis, we interrogated cell-specific HSF1 knockout mice and HSF1 transgenic mice using in vitro and in vivo techniques. We determined that while HSF1 expression was induced by anti-CD3 stimulation alone, the combination of anti-CD3 and transforming growth factor β, a vital cytokine for regulatory T cell (Treg) development, resulted in increased activating phosphorylation of HSF1, leading to increased nuclear translocation and binding to heat shock response elements. Using chromatin immunoprecipitation (ChIP), we demonstrate the direct binding of HSF1 to foxp3 in isolated murine CD4+ T cells, which in turn coincided with induction of FoxP3 expression. We defined that conditional knockout of HSF1 decreased development and function of Tregs and overexpression of HSF1 led to increased expression of FoxP3 along with enhanced Treg suppressive function. Adoptive transfer of CD45RBHigh CD4 colitogenic T cells along with HSF1 transgenic CD25+ Tregs prevented intestinal inflammation when wild-type Tregs did not. Finally, overexpression of HSF1 provided enhanced barrier function and protection from murine ileitis. This study demonstrates that HSF1 promotes Treg development and function and may represent both a crucial step in the development of induced regulatory T cells and an exciting target for the treatment of inflammatory diseases with a regulatory T-cell component. SIGNIFICANCE STATEMENT: The heat shock response (HSR) is a canonical stress response triggered by a multitude of stressors, including inflammation. Evidence supports the role of the HSR in regulating inflammation, yet there is a paucity of data on its influence in T cells specifically. Gut homeostasis reflects a balance between regulatory clusters of differentiation (CD)4+ T cells and pro-inflammatory T-helper (Th)17 cells. We show that upon activation within T cells, heat shock factor 1 (HSF1) translocates to the nucleus, and stimulates Treg-specific gene expression. HSF1 deficiency hinders Treg development and function and conversely, HSF1 overexpression enhances Treg development and function. While this work, focuses on HSF1 as a novel therapeutic target for intestinal inflammation, the findings have significance for a broad range of inflammatory conditions.
Collapse
Affiliation(s)
- Colm B Collins
- Mucosal Inflammation Program University of Colorado, Anschutz Medical Campus, Aurora, CO, USA; Department of Pediatrics, Division of Gastroenterology, Hepatology and Nutrition University of Colorado, Anschutz Medical Campus, Aurora, CO, USA; Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Dublin, Ireland
| | - Tom T Nguyen
- Mucosal Inflammation Program University of Colorado, Anschutz Medical Campus, Aurora, CO, USA; Department of Pediatrics, Division of Gastroenterology, Hepatology and Nutrition University of Colorado, Anschutz Medical Campus, Aurora, CO, USA
| | - Robert S Leddy
- Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Dublin, Ireland
| | - Kibrom M Alula
- Mucosal Inflammation Program University of Colorado, Anschutz Medical Campus, Aurora, CO, USA; Department of Pediatrics, Division of Gastroenterology, Hepatology and Nutrition University of Colorado, Anschutz Medical Campus, Aurora, CO, USA
| | - Alyson R Yeckes
- Mucosal Inflammation Program University of Colorado, Anschutz Medical Campus, Aurora, CO, USA; Department of Pediatrics, Division of Gastroenterology, Hepatology and Nutrition University of Colorado, Anschutz Medical Campus, Aurora, CO, USA
| | - Derek Strassheim
- Mucosal Inflammation Program University of Colorado, Anschutz Medical Campus, Aurora, CO, USA
| | - Carol M Aherne
- Mucosal Inflammation Program University of Colorado, Anschutz Medical Campus, Aurora, CO, USA; Department of Anesthesiology, University of Colorado Anschutz Medical Campus, Aurora, CO, USA; Department of Medicine, Division of Pulmonary Sciences and Critical Care Medicine, University of Colorado, Anschutz Medical Campus, Aurora, CO, USA
| | - Marisa E Luck
- Mucosal Inflammation Program University of Colorado, Anschutz Medical Campus, Aurora, CO, USA; Department of Pediatrics, Division of Gastroenterology, Hepatology and Nutrition University of Colorado, Anschutz Medical Campus, Aurora, CO, USA
| | - Vijaya Karoor
- Department of Medicine, Division of Pulmonary Sciences and Critical Care Medicine, University of Colorado, Anschutz Medical Campus, Aurora, CO, USA
| | - Paul Jedlicka
- Department of Pathology, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | | | - Edwin F de Zoeten
- Mucosal Inflammation Program University of Colorado, Anschutz Medical Campus, Aurora, CO, USA; Department of Pediatrics, Division of Gastroenterology, Hepatology and Nutrition University of Colorado, Anschutz Medical Campus, Aurora, CO, USA.
| |
Collapse
|
3
|
Li J, Xuan R, Wu W, Zhang H, Zhao J, Zhang S. Geldanamycin ameliorates multiple organ dysfunction and microthrombosis in septic mice by inhibiting the formation of the neutrophil extracellular network by activating heat shock factor 1 HSF1. Clin Exp Pharmacol Physiol 2023; 50:698-707. [PMID: 37308449 DOI: 10.1111/1440-1681.13798] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Revised: 02/13/2023] [Accepted: 05/15/2023] [Indexed: 06/14/2023]
Abstract
Sepsis and septic shock are common critical illnesses in the intensive care unit with a high mortality rate. Geldanamycin (GA) has a broad spectrum of antibacterial and antiviral activity and has inhibitory effects on various viruses. However, whether GA affects sepsis due to infections remains unknown. In this study, alanine aminotransferase, aspartate aminotransferase, blood urea nitrogen and creatinine in serum; neutrophil gelatinase-associated lipocalin and kidney injury molecule-1 in the urine, cytokines (tumour necrosis factor alpha, interleukin-1β and interleukin-6) in the bronchoalveolar lavage fluid and myeloperoxidase in the lung tissues were measured using enzyme-linked immunosorbent assay kits. Pathological injury was measured by hematoxylin and eosin staining and neutrophils were measured by flow cytometry analysis; related expressions were analysed by qPCR, western blot and immunofluorescence assay. The results showed that GA significantly ameliorated cecum ligation and puncture (CLP)-triggered liver, kidney and lung injury in septic mice. In addition, we found that GA dose-dependently inhibited microthrombosis and alleviated coagulopathy in septic mice. Further molecular mechanism analysis suggests that GA may act through upregulation of heat shock factor 1 and tissue-type plasminogen activator. In conclusion, our study elucidated the protective effects of GA in a mouse model established using CLP, and the results reveal that GA may be a promising agent for sepsis.
Collapse
Affiliation(s)
- Jing Li
- Department of Critical Care Medicine, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Tongji Shanxi Hospital, Third Hospital of Shanxi Medical University, Taiyuan, China
| | - Ruijing Xuan
- Department of Experimental Zoology, Laboratory Animal Center, Shanxi Medical University, Taiyuan, China
| | - Weidong Wu
- Department of Critical Care Medicine, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Tongji Shanxi Hospital, Third Hospital of Shanxi Medical University, Taiyuan, China
| | - Hailong Zhang
- Department of Clinical Laboratory, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Tongji Shanxi Hospital, Third Hospital of Shanxi Medical University, Taiyuan, China
| | - Jie Zhao
- Department of Critical Care Medicine, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Tongji Shanxi Hospital, Third Hospital of Shanxi Medical University, Taiyuan, China
| | - Shan Zhang
- Department of Critical Care Medicine, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Tongji Shanxi Hospital, Third Hospital of Shanxi Medical University, Taiyuan, China
| |
Collapse
|
4
|
Li N, Liu B, He R, Li G, Xiong R, Fu T, Li D, Xu C, Wang B, Geng Q. HDAC3 promotes macrophage pyroptosis via regulating histone deacetylation in acute lung injury. iScience 2023; 26:107158. [PMID: 37404376 PMCID: PMC10316655 DOI: 10.1016/j.isci.2023.107158] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Revised: 04/14/2023] [Accepted: 06/12/2023] [Indexed: 07/06/2023] Open
Abstract
Activated inflammation and pyroptosis in macrophage are closely associated with acute lung injury (ALI). Histone deacetylase 3 (HDAC3) serves as an important enzyme that could repress gene expression by mediating chromatin remodeling. In this study, we found that HDAC3 was highly expressed in lung tissues of lipopolysaccharide (LPS)-treated mice. Lung tissues from macrophage HDAC3-deficient mice stimulated with LPS showed alleviative lung pathological injury and inflammatory response. HDAC3 silencing significantly blocked the activation of cyclic GMP-AMP synthase (cGAS)/stimulator of interferon genes (STING) pathway in LPS-induced macrophage. LPS could recruit HDAC3 and H3K9Ac to the miR-4767 gene promoter, which repressed the expression of miR-4767 to promote the expression of cGAS. Taken together, our findings demonstrated that HDAC3 played a pivotal role in mediating pyroptosis in macrophage and ALI by activating cGAS/STING pathway through its histone deacetylation function. Targeting HDAC3 in macrophage may provide a new therapeutic target for the prevention of LPS-induced ALI.
Collapse
Affiliation(s)
- Ning Li
- Department of Thoracic Surgery, Renmin Hospital of Wuhan University, Wuhan 430060, China
| | - Bohao Liu
- Department of Thoracic Surgery, Renmin Hospital of Wuhan University, Wuhan 430060, China
- Department of Thoracic Surgery, The First Hospital of Jilin University, Changchun 130021, China
| | - Ruyuan He
- Department of Thoracic Surgery, Renmin Hospital of Wuhan University, Wuhan 430060, China
| | - Guorui Li
- Department of Thoracic Surgery, Renmin Hospital of Wuhan University, Wuhan 430060, China
| | - Rui Xiong
- Department of Thoracic Surgery, Renmin Hospital of Wuhan University, Wuhan 430060, China
| | - Tinglv Fu
- Department of Thoracic Surgery, Renmin Hospital of Wuhan University, Wuhan 430060, China
| | - Donghang Li
- Department of Thoracic Surgery, Renmin Hospital of Wuhan University, Wuhan 430060, China
| | - Chenzhen Xu
- Department of Thoracic Surgery, Renmin Hospital of Wuhan University, Wuhan 430060, China
| | - Bo Wang
- Department of Thoracic Surgery, Renmin Hospital of Wuhan University, Wuhan 430060, China
| | - Qing Geng
- Department of Thoracic Surgery, Renmin Hospital of Wuhan University, Wuhan 430060, China
| |
Collapse
|
5
|
HSF1 Attenuates the Release of Inflammatory Cytokines Induced by Lipopolysaccharide through Transcriptional Regulation of Atg10. Microbiol Spectr 2023; 11:e0305922. [PMID: 36598250 PMCID: PMC9927406 DOI: 10.1128/spectrum.03059-22] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
Autophagy plays an important role in endotoxemic mice, and heat shock factor 1 (HSF1) plays a crucial protective role in endotoxemic mice. However, the protective mechanisms of HSF1 are poorly understood. In this text, bioinformatics analysis, chromatin immunoprecipitation, and electrophoresis mobility shift assay were employed to investigate the underlying mechanisms. The results showed that the release of inflammatory cytokines increased and autophagy decreased significantly in Hsf1-/- endotoxemic mice compared with those in Hsf1+/+ endotoxemic mice. HSF1 could directly bind to the noncoding promoter region of the autophagy-related gene 10 (Atg10). The expression of ATG10 and the ratio of LC3-II/LC3-I were obviously decreased in LPS-treated Hsf1-/- peritoneal macrophages (PM) versus those in LPS-treated Hsf1+/+ PM. Overexpression of HSF1 increased the level of the ATG10 protein and enhanced the ratio of LC3-II/LC3-I in RAW264.7 cells. In contrast, silencing of HSF1 decreased the expression of ATG10 and markedly lowered the ratio of LC3-II/LC3-I. In a cotransfected cell experiment, the upregulation of autophagy by overexpression HSF1 was reversed by small interfering RNA (siRNA)-ATG10. Compared with the overexpression HSF1, the release of inflammatory cytokines induced by lipopolysaccharide (LPS) was decreased in pcDNA3.1-HSF1 with siRNA-ATG10 cotransfected RAW264.7 cells. On the other hand, the decrease of autophagy by siRNA-HSF1 was compensated by overexpression of ATG10. Compared with siRNA-HSF1, the release of inflammatory cytokines induced by LPS was increased in siRNA-HSF1 with pcDNA3.1-ATG10 cotransfected RAW264.7 cells. These results presented a novel mechanism that HSF1 attenuated the release of inflammatory cytokines induced by LPS through transcriptional regulation of Atg10. Targeting of HSF1-Atg10-autophagy might be an attractive strategy in endotoxemia therapeutics. IMPORTANCE HSF1 plays an important protective role in endotoxemic mice. However, the protective mechanisms of HSF1 are poorly understood. In the present study, we demonstrated that HSF1 upregulated ATG10 through specifically binding Atg10 promoter's noncoding region in LPS-treated PM and RAW264.7 cells. By depletion of HSF1, the expression of ATG10 was significantly decreased, leading to aggravate releasing of inflammatory cytokines in LPS-treated RAW264.7 cells. These findings provided a new mechanism of HSF1 in endotoxemic mice.
Collapse
|
6
|
The macrophage senescence hypothesis: the role of poor heat shock response in pulmonary inflammation and endothelial dysfunction following chronic exposure to air pollution. Inflamm Res 2022; 71:1433-1448. [PMID: 36264363 DOI: 10.1007/s00011-022-01647-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Revised: 07/18/2022] [Accepted: 09/14/2022] [Indexed: 11/05/2022] Open
Abstract
INTRODUCTION Cardiovascular diseases (CVD) have been associated with high exposure to fine particulate air pollutants (PM2.5). Alveolar macrophages are the first defense against inhaled particles. As soon as they phagocytize the particles, they reach an inflammatory phenotype, which affects the surrounding cells and associates with CVD. Not coincidentally, CVD are marked by a depleted heat shock response (HSR), defined by a deficit in inducing 70-kDa heat shock protein (HSP70) expression during stressful conditions. HSP70 is a powerful anti-inflammatory chaperone, whose reduced levels trigger a pro-inflammatory milieu, cellular senescence, and a senescence-associated secretory phenotype (SASP). However, whether macrophage senescence is the main mechanism by which PM2.5 propagates low-grade inflammation remains unclear. OBJECTIVE AND DESIGN In this article, we review evidence supporting that chronic exposure to PM2.5 depletes HSR and determines the ability to solve the initial stress. RESULTS AND DISCUSSION When exposed to PM2.5, macrophages increase the production of reactive oxygen species, which activate nuclear factor-kappa B (NF-κB). NF-κB is naturally a pro-inflammatory factor that drives prostaglandin E2 (PGE2) synthesis and causes fever. PGE2 can be converted into prostaglandin A2, a powerful inducer of HSR. Therefore, when transiently activated, NF-κB can trigger the anti-inflammatory response through negative feedback, by inducing HSP70 expression. However, when chronically activated, NF-κB heads a set of pathways involved in mitochondrial dysfunction, endoplasmic reticulum stress, unfolded protein response, inflammasome activation, and apoptosis. During chronic exposure to PM2.5, cells cannot properly express sirtuin-1 or activate heat shock factor-1 (HSF-1), which delays the resolution phase of inflammation. Since alveolar macrophages are the first immune defense against PM2.5, we suppose that the pollutant impairs HSR and, consequently, induces cellular senescence. Accordingly, senescent macrophages change its secretory phenotype to a more inflammatory one, known as SASP. Finally, macrophages' SASP would propagate the systemic inflammation, leading to endothelial dysfunction and atherosclerosis.
Collapse
|
7
|
Shi X, Li T, Liu Y, Yin L, Xiao L, Fu L, Zhu Y, Chen H, Wang K, Xiao X, Zhang H, Tan S, Tan S. HSF1 Protects Sepsis-Induced Acute Lung Injury by Inhibiting NLRP3 Inflammasome Activation. Front Immunol 2022; 13:781003. [PMID: 35720321 PMCID: PMC9199371 DOI: 10.3389/fimmu.2022.781003] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Accepted: 04/29/2022] [Indexed: 11/13/2022] Open
Abstract
As an important transcription factor, heat shock factor 1 (HSF1) plays an endogenous anti-inflammation role in the body and can alleviate multiple organ dysfunction caused by sepsis, which contributes to an uncontrolled inflammatory response. The NLRP3 inflammasome is a supramolecular complex that plays key roles in immune surveillance. Inflammation is accomplished by NLRP3 inflammasome activation, which leads to the proteolytic maturation of IL-1β and pyroptosis. However, whether HSF1 is involved in the activation of the NLRP3 inflammasome in septic acute lung injury (ALI) has not been reported. Here, we show that HSF1 suppresses NLRP3 inflammasome activation in transcriptional and post-translational modification levels. HSF1 can repress NLRP3 expression via inhibiting NF-κB phosphorylation. HSF1 can inhibit caspase-1 activation and IL-1β maturation via promoting NLRP3 ubiquitination. Our finding not only elucidates a novel mechanism for HSF1-mediated protection of septic ALI but also identifies new therapeutic targets for septic ALI and related diseases.
Collapse
Affiliation(s)
- Xueyan Shi
- Sepsis Translational Medicine Key Laboratory of Hunan Province, Central South University, Changsha, China.,State Key Laboratory of Molecular Oncology, National Cancer Center/National Clinical Research, Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union, Medical College, Beijing, China
| | - Tao Li
- Sepsis Translational Medicine Key Laboratory of Hunan Province, Central South University, Changsha, China.,Department of Pathophysiology, Medical College of Jiaying University, Meizhou, China
| | - Yanting Liu
- Sepsis Translational Medicine Key Laboratory of Hunan Province, Central South University, Changsha, China.,Department of Pathophysiology, Xiangya School of Medicine, Central South University, Changsha, China
| | - Leijin Yin
- Sepsis Translational Medicine Key Laboratory of Hunan Province, Central South University, Changsha, China.,Department of Pathophysiology, Xiangya School of Medicine, Central South University, Changsha, China
| | - Lan Xiao
- Department of Traditional Chinese Medicine, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Liyao Fu
- Sepsis Translational Medicine Key Laboratory of Hunan Province, Central South University, Changsha, China.,The Second Xiangya Hospital, Central South University, Changsha, China
| | - Yaxi Zhu
- Sepsis Translational Medicine Key Laboratory of Hunan Province, Central South University, Changsha, China.,Department of Pathophysiology, Xiangya School of Medicine, Central South University, Changsha, China
| | - Huan Chen
- Sepsis Translational Medicine Key Laboratory of Hunan Province, Central South University, Changsha, China.,Department of Pathophysiology, Xiangya School of Medicine, Central South University, Changsha, China
| | - Kangkai Wang
- Sepsis Translational Medicine Key Laboratory of Hunan Province, Central South University, Changsha, China.,Department of Pathophysiology, Xiangya School of Medicine, Central South University, Changsha, China
| | - Xianzhong Xiao
- Sepsis Translational Medicine Key Laboratory of Hunan Province, Central South University, Changsha, China.,Department of Pathophysiology, Xiangya School of Medicine, Central South University, Changsha, China
| | - Huali Zhang
- Sepsis Translational Medicine Key Laboratory of Hunan Province, Central South University, Changsha, China.,Department of Pathophysiology, Xiangya School of Medicine, Central South University, Changsha, China
| | - Sichuang Tan
- The Second Xiangya Hospital, Central South University, Changsha, China
| | - Sipin Tan
- Sepsis Translational Medicine Key Laboratory of Hunan Province, Central South University, Changsha, China.,Department of Pathophysiology, Xiangya School of Medicine, Central South University, Changsha, China
| |
Collapse
|
8
|
Li T, Zhao J, Miao S, Chen Y, Xu Y, Liu Y. Protective effect of H 2S on LPS‑induced AKI by promoting autophagy. Mol Med Rep 2022; 25:96. [PMID: 35059738 PMCID: PMC8809055 DOI: 10.3892/mmr.2022.12612] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Accepted: 12/17/2021] [Indexed: 11/06/2022] Open
Abstract
The present study explored the protective effect of exogenous hydrogen sulfide (H2S) on lipopolysaccharide (LPS)‑induced acute kidney injury (AKI) and the underlying mechanisms. To establish an AKI injury mouse model, LPS (10 mg/kg) was intraperitoneally injected into mice pretreated with 0.8 mg/kg sodium hydrosulfide hydrate (NaHS), an H2S donor. The mouse survival rate and the degree of kidney injury were examined. To construct a cell damage model, HK‑2 cells were pretreated with different concentrations (0.1, 0.3 and 0.5 mM) of NaHS, and then the cells were stimulated with LPS (1 µg/ml). The cell viability, autophagy, apoptosis levels and the release of inflammatory factors were examined in mouse kidney tissue and HK‑2 renal tubular epithelial cells. It was found that pretreatment with NaHS significantly improved the survival rate of septic AKI mice, and reduced the renal damage, release of inflammatory factors and apoptosis. In HK‑2 cells, NaHS protected cells from LPS caused damage via promoting autophagy and inhibiting apoptosis and the release of inflammatory factors. In order to clarify the relationship between autophagy and apoptosis and inflammatory factors, this study used 3‑methyladenine (3‑MA) to inhibit autophagy. The results revealed that 3‑MA eliminated the protective effect of NaHS in HK‑2 cells and AKI mice. Overall, NaHS can protect from LPS‑induced AKI by promoting autophagy and inhibiting apoptosis and the release of inflammatory factors.
Collapse
Affiliation(s)
- Ting Li
- Department of Physiology, Changzhi Medical College, Changzhi, Shanxi 046000, P.R. China
| | - Jie Zhao
- Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha, Hunan 410078, P.R. China
| | - Shuying Miao
- Department of Pathophysiology, Xiangya School of Medicine, Central South University, Changsha, Hunan 410078, P.R. China
| | - Yiyang Chen
- Department of Pathophysiology, Xiangya School of Medicine, Central South University, Changsha, Hunan 410078, P.R. China
| | - Yunfei Xu
- Department of Pathophysiology, Xiangya School of Medicine, Central South University, Changsha, Hunan 410078, P.R. China
| | - Ying Liu
- Department of Pathophysiology, Xiangya School of Medicine, Central South University, Changsha, Hunan 410078, P.R. China
| |
Collapse
|
9
|
Jeny F, Bernaudin JF, Valeyre D, Kambouchner M, Pretolani M, Nunes H, Planès C, Besnard V. Hypoxia Promotes a Mixed Inflammatory-Fibrotic Macrophages Phenotype in Active Sarcoidosis. Front Immunol 2021; 12:719009. [PMID: 34456926 PMCID: PMC8385772 DOI: 10.3389/fimmu.2021.719009] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Accepted: 07/26/2021] [Indexed: 11/30/2022] Open
Abstract
Background Macrophages are pivotal cells in sarcoidosis. Monocytes-derived (MD) macrophages have recently been demonstrated to play a major role especially in pulmonary sarcoidosis. From inflammatory tissues to granulomas, they may be exposed to low oxygen tension environments. As hypoxia impact on sarcoidosis immune cells has never been addressed, we designed the present study to investigate MD-macrophages from sarcoidosis patients in this context. We hypothesized that hypoxia may induce functional changes on MD-macrophages which could have a potential impact on the course of sarcoidosis. Methods We studied MD-macrophages, from high active sarcoidosis (AS) (n=26), low active or inactive sarcoidosis (IS) (n=24) and healthy controls (n=34) exposed 24 hours to normoxia (21% O2) or hypoxia (1.5% O2). Different macrophage functions were explored: hypoxia-inducible factor-1α (HIF-1α) and nuclear factor-kappa B (NF-κB) activation, cytokines secretion, phagocytosis, CD80/CD86/HLA-DR expression, profibrotic response. Results We observed that hypoxia, with a significantly more pronounced effect in AS compared with controls and IS, increased the HIF-1α trans-activity, promoted a proinflammatory response (TNFα, IL1ß) without activating NF-κB pathway and a profibrotic response (TGFß1, PDGF-BB) with PAI-1 secretion associated with human lung fibroblast migration inhibition. These results were confirmed by immunodetection of HIF-1α and PAI-1 in granulomas observed in pulmonary biopsies from patients with sarcoidosis. Hypoxia also decreased the expression of CD80/CD86 and HLA-DR on MD-macrophages in the three groups while it did not impair phagocytosis and the expression of CD36 expression on cells in AS and IS at variance with controls. Conclusions Hypoxia had a significant impact on MD-macrophages from sarcoidosis patients, with the strongest effect seen in patients with high active disease. Therefore, hypoxia could play a significant role in sarcoidosis pathogenesis by increasing the macrophage proinflammatory response, maintaining phagocytosis and reducing antigen presentation, leading to a deficient T cell response. In addition, hypoxia could favor fibrosis by promoting profibrotic cytokines response and by sequestering fibroblasts in the vicinity of granulomas.
Collapse
Affiliation(s)
- Florence Jeny
- INSERM UMR 1272, Sorbonne Paris-Nord University, Bobigny, France.,AP-HP, Pulmonology Department, Avicenne Hospital, Bobigny, France
| | - Jean-François Bernaudin
- INSERM UMR 1272, Sorbonne Paris-Nord University, Bobigny, France.,Faculty of Medicine, Sorbonne University, Paris, France
| | - Dominique Valeyre
- INSERM UMR 1272, Sorbonne Paris-Nord University, Bobigny, France.,AP-HP, Pulmonology Department, Avicenne Hospital, Bobigny, France
| | - Marianne Kambouchner
- INSERM UMR 1272, Sorbonne Paris-Nord University, Bobigny, France.,AP-HP, Pathology Department, Avicenne Hospital, Bobigny, France
| | - Marina Pretolani
- Inserm UMR1152, Physiopathology and Epidemiology of Respiratory Diseases, Paris, France.,Faculty of Medicine, Bichat Hospital, Paris University, Paris, France.,Laboratory of Excellence, INFLAMEX, Paris University, DHU FIRE, Paris, France
| | - Hilario Nunes
- INSERM UMR 1272, Sorbonne Paris-Nord University, Bobigny, France.,AP-HP, Pulmonology Department, Avicenne Hospital, Bobigny, France
| | - Carole Planès
- INSERM UMR 1272, Sorbonne Paris-Nord University, Bobigny, France.,AP-HP, Physiology Department, Avicenne Hospital, Bobigny, France
| | - Valérie Besnard
- INSERM UMR 1272, Sorbonne Paris-Nord University, Bobigny, France
| |
Collapse
|
10
|
Li T, Chen H, Shi X, Yin L, Tan C, Gu J, Liu Y, Li C, Xiao G, Liu K, Liu M, Tan S, Xiao Z, Zhang H, Xiao X. HSF1 Alleviates Microthrombosis and Multiple Organ Dysfunction in Mice with Sepsis by Upregulating the Transcription of Tissue-Type Plasminogen Activator. Thromb Haemost 2021; 121:1066-1078. [PMID: 33296942 DOI: 10.1055/a-1333-7305] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Sepsis is a life-threatening complication of infection closely associated with coagulation abnormalities. Heat shock factor 1 (HSF1) is an important transcription factor involved in many biological processes, but its regulatory role in blood coagulation remained unclear. We generated a sepsis model in HSF1-knockout mice to evaluate the role of HSF1 in microthrombosis and multiple organ dysfunction. Compared with septic wild-type mice, septic HSF1-knockout mice exhibited a greater degree of lung, liver, and kidney tissue damage, increased fibrin/: fibrinogen deposition in the lungs and kidneys, and increased coagulation activity. RNA-seq analysis revealed that tissue-type plasminogen activator (t-PA) was upregulated in the lung tissues of septic mice, and the level of t-PA was significantly lower in HSF1-knockout mice than in wild-type mice in sepsis. The effects of HSF1 on t-PA expression were further validated in HSF1-knockout mice with sepsis and in vitro in mouse brain microvascular endothelial cells using HSF1 RNA interference or overexpression under lipopolysaccharide stimulation. Bioinformatics analysis, combined with electromobility shift and luciferase reporter assays, indicated that HSF1 directly upregulated t-PA at the transcriptional level. Our results reveal, for the first time, that HSF1 suppresses coagulation activity and microthrombosis by directly upregulating t-PA, thereby exerting protective effects against multiple organ dysfunction in sepsis.
Collapse
Affiliation(s)
- Tao Li
- Key Laboratory of Sepsis Translational Medicine of Hunan, Department of Pathophysiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, China
- Department of Pathophysiology, Medical College of Jiaying University, Meizhou, Guangdong, China
| | - Huan Chen
- Postdoctoral Research Station of Clinical Medicine and Department of Hematology, the Third Xiangya Hospital, Central South University, Changsha, Hunan Province, China
| | - Xueyan Shi
- Key Laboratory of Sepsis Translational Medicine of Hunan, Department of Pathophysiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, China
| | - Leijing Yin
- Key Laboratory of Sepsis Translational Medicine of Hunan, Department of Pathophysiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, China
| | - Chuyi Tan
- Key Laboratory of Sepsis Translational Medicine of Hunan, Department of Pathophysiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, China
| | - Jia Gu
- Key Laboratory of Sepsis Translational Medicine of Hunan, Department of Pathophysiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, China
| | - Yanjuan Liu
- Key Laboratory of Sepsis Translational Medicine of Hunan, Department of Pathophysiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, China
| | - Caiyan Li
- Key Laboratory of Sepsis Translational Medicine of Hunan, Department of Pathophysiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, China
| | - Gui Xiao
- Department of Nursing, Hainan Medical University, Haikou, Hainan, China
| | - Ke Liu
- Key Laboratory of Sepsis Translational Medicine of Hunan, Department of Pathophysiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, China
| | - Meidong Liu
- Key Laboratory of Sepsis Translational Medicine of Hunan, Department of Pathophysiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, China
| | - Sipin Tan
- Key Laboratory of Sepsis Translational Medicine of Hunan, Department of Pathophysiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, China
| | - Zihui Xiao
- Key Laboratory of Sepsis Translational Medicine of Hunan, Department of Pathophysiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, China
| | - Huali Zhang
- Key Laboratory of Sepsis Translational Medicine of Hunan, Department of Pathophysiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, China
| | - Xianzhong Xiao
- Key Laboratory of Sepsis Translational Medicine of Hunan, Department of Pathophysiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, China
| |
Collapse
|
11
|
Li T, Chen H, Shi X, Yin L, Tan C, Gu J, Liu Y, Li C, Xiao G, Liu K, Liu M, Tan S, Xiao Z, Zhang H, Xiao X. HSF1 Alleviates Microthrombosis and Multiple Organ Dysfunction in Mice with Sepsis by Upregulating the Transcription of Tissue-Type Plasminogen Activator. Thromb Haemost 2021. [PMID: 33506482 DOI: 10.1055/s-0040-1722627] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Sepsis is a life-threatening complication of infection closely associated with coagulation abnormalities. Heat shock factor 1 (HSF1) is an important transcription factor involved in many biological processes, but its regulatory role in blood coagulation remained unclear. We generated a sepsis model in HSF1-knockout mice to evaluate the role of HSF1 in microthrombosis and multiple organ dysfunction. Compared with septic wild-type mice, septic HSF1-knockout mice exhibited a greater degree of lung, liver, and kidney tissue damage, increased fibrin/: fibrinogen deposition in the lungs and kidneys, and increased coagulation activity. RNA-seq analysis revealed that tissue-type plasminogen activator (t-PA) was upregulated in the lung tissues of septic mice, and the level of t-PA was significantly lower in HSF1-knockout mice than in wild-type mice in sepsis. The effects of HSF1 on t-PA expression were further validated in HSF1-knockout mice with sepsis and in vitro in mouse brain microvascular endothelial cells using HSF1 RNA interference or overexpression under lipopolysaccharide stimulation. Bioinformatics analysis, combined with electromobility shift and luciferase reporter assays, indicated that HSF1 directly upregulated t-PA at the transcriptional level. Our results reveal, for the first time, that HSF1 suppresses coagulation activity and microthrombosis by directly upregulating t-PA, thereby exerting protective effects against multiple organ dysfunction in sepsis.
Collapse
Affiliation(s)
- Tao Li
- Key Laboratory of Sepsis Translational Medicine of Hunan, Department of Pathophysiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, China.,Department of Pathophysiology, Medical College of Jiaying University, Meizhou, Guangdong, China
| | - Huan Chen
- Postdoctoral Research Station of Clinical Medicine and Department of Hematology, the Third Xiangya Hospital, Central South University, Changsha, Hunan Province, China
| | - Xueyan Shi
- Key Laboratory of Sepsis Translational Medicine of Hunan, Department of Pathophysiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, China
| | - Leijing Yin
- Key Laboratory of Sepsis Translational Medicine of Hunan, Department of Pathophysiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, China
| | - Chuyi Tan
- Key Laboratory of Sepsis Translational Medicine of Hunan, Department of Pathophysiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, China
| | - Jia Gu
- Key Laboratory of Sepsis Translational Medicine of Hunan, Department of Pathophysiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, China
| | - Yanjuan Liu
- Key Laboratory of Sepsis Translational Medicine of Hunan, Department of Pathophysiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, China
| | - Caiyan Li
- Key Laboratory of Sepsis Translational Medicine of Hunan, Department of Pathophysiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, China
| | - Gui Xiao
- Department of Nursing, Hainan Medical University, Haikou, Hainan, China
| | - Ke Liu
- Key Laboratory of Sepsis Translational Medicine of Hunan, Department of Pathophysiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, China
| | - Meidong Liu
- Key Laboratory of Sepsis Translational Medicine of Hunan, Department of Pathophysiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, China
| | - Sipin Tan
- Key Laboratory of Sepsis Translational Medicine of Hunan, Department of Pathophysiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, China
| | - Zihui Xiao
- Key Laboratory of Sepsis Translational Medicine of Hunan, Department of Pathophysiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, China
| | - Huali Zhang
- Key Laboratory of Sepsis Translational Medicine of Hunan, Department of Pathophysiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, China
| | - Xianzhong Xiao
- Key Laboratory of Sepsis Translational Medicine of Hunan, Department of Pathophysiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, China
| |
Collapse
|
12
|
Agah S, Akbari A, Sadeghi E, Morvaridzadeh M, Basharat Z, Palmowski A, Heshmati J. Resveratrol supplementation and acute pancreatitis: A comprehensive review. Biomed Pharmacother 2021; 137:111268. [PMID: 33493966 DOI: 10.1016/j.biopha.2021.111268] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Revised: 01/07/2021] [Accepted: 01/10/2021] [Indexed: 12/14/2022] Open
Abstract
Resveratrol, a natural polyphenolic ingredient extracted from herbs, suppresses oxidative stress and inflammation. We performed a comprehensive review to find any evidence about the effects of Resveratrol on acute pancreatitis (AP). Resveratrol has been found to directly impact cytokine generation. As these factors play a crucial role in the pathophysiology of AP, resveratrol might attenuate AP and its complications. Mechanistically, resveratrol exerts its pharmacological effects through anti-inflammatory and antioxidant mechanisms via interaction with different signaling molecules and transcription factors. Indeed, resveratrol might prove to be an effective therapeutic component for AP treatment in the future. In this review, we shed light on potential most recent pathways through which resveratrol might impact the management and control of AP.
Collapse
Affiliation(s)
- Shahram Agah
- Colorectal Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Abolfazl Akbari
- Colorectal Research Center, Iran University of Medical Sciences, Tehran, Iran.
| | - Ehsan Sadeghi
- Research Center for Environmental Determinants of Health (RCEDH), Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Mojgan Morvaridzadeh
- Department of Nutritional Science, School of Nutritional Science and Food Technology, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Zarrin Basharat
- Jamil-ur-Rahman Center for Genome Research, Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi, Karachi, 75270, Pakistan
| | - Andriko Palmowski
- Department of Rheumatology and Clinical Immunology, Charite - University Medicine Berlin, Germany
| | - Javad Heshmati
- Department of Nutritional Science, School of Nutritional Science and Food Technology, Kermanshah University of Medical Sciences, Kermanshah, Iran.
| |
Collapse
|
13
|
HSF1 Attenuates LPS-Induced Acute Lung Injury in Mice by Suppressing Macrophage Infiltration. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2020; 2020:1936580. [PMID: 33381262 PMCID: PMC7762676 DOI: 10.1155/2020/1936580] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Revised: 06/21/2020] [Accepted: 12/01/2020] [Indexed: 12/14/2022]
Abstract
Heat shock factor 1 (HSF1) is a transcription factor involved in the heat shock response and other biological processes. We have unveiled here an important role of HSF1 in acute lung injury (ALI). HSF1 knockout mice were used as a model of lipopolysaccharide- (LPS-) induced ALI. Lung damage was aggravated, and macrophage infiltration increased significantly in the bronchoalveolar lavage fluid (BALF) and lung tissue of HSF-/- mice compared with the damage observed in HSF1+/+ mice. Upon LPS stimulation, HSF-/- mice showed higher levels of monocyte chemoattractant protein-1 (MCP-1) in the serum, BALF, and lung tissue and increased the expression of MCP-1 and chemokine (C-C motif) receptor 2 (CCR2) on the surface of macrophages compared with those in HSF1+/+. Electrophoretic mobility shift assays (EMSA) and dual luciferase reporter assays revealed that HSF1 could directly bind to heat shock elements (HSE) in the promoter regions of MCP-1 and its receptor CCR2, thereby inhibiting the expression of both genes. We concluded that HSF1 attenuated LPS-induced ALI in mice by directly suppressing the transcription of MCP-1/CCR2, which in turn reduced macrophage infiltration.
Collapse
|
14
|
Astragalus membranaceus Injection Suppresses Production of Interleukin-6 by Activating Autophagy through the AMPK-mTOR Pathway in Lipopolysaccharide-Stimulated Macrophages. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2020; 2020:1364147. [PMID: 32724488 PMCID: PMC7364262 DOI: 10.1155/2020/1364147] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/23/2020] [Revised: 05/06/2020] [Accepted: 05/07/2020] [Indexed: 12/18/2022]
Abstract
Astragalus membranaceus (AM), used in traditional Chinese medicine, has been shown to enhance immune functions, and recently, its anti-inflammatory effects were identified. However, the mechanisms of action remain unclear. Most studies have shown that autophagy might be involved in the immune response of the body, including inflammation. Here, we developed an inflammatory model by stimulating macrophages with lipopolysaccharides (LPS) to explore the anti-inflammatory effect and mechanisms of AM injection from the perspective of the regulation of autophagy. Immunoblot, immunofluorescence, and ELISA were used to determine the effects of AM injection on the production of interleukin-6 (IL-6) and alterations of autophagy markers. It was found that AM injection reduced the expression of IL-6 in LPS-stimulated macrophages and reversed the LPS-induced inhibition of cellular autophagy. After treatment with inhibitors of signaling pathways, it was shown that LPS downregulated autophagy and upregulated the production of IL-6 in macrophages via the protein kinase B (Akt)/mammalian target of rapamycin (mTOR) pathway. AM injection reversed the effects of LPS by activating the AMP-activated protein kinase (AMPK) instead of inhibiting Akt. These results were further confirmed by testing activators and siRNA silencing of AMPK. Hence, these 2 distinct signaling molecules appear to exert opposite effects on mTOR, which integrates information from multiple upstream signaling pathways, negatively regulating autophagy. In addition, we demonstrated that autophagy might play a key role in regulating the production of IL-6 by testing activators and inhibitors of autophagy and siRNA silencing of ATG5. These findings showed that AM injection might enhance autophagy by activating AMPK and might further play a repressive effect on the LPS-stimulated expression of IL-6. This study explored the relationship between autophagy, signaling pathways, and the production of inflammatory factors in a model of endotoxin infection and treatment with AM injection.
Collapse
|
15
|
Zhang F, Wang W, Niu J, Yang G, Luo J, Lan D, Wu J, Li M, Sun Y, Wang K, Miao Y. Heat-shock transcription factor 2 promotes sodium butyrate-induced autophagy by inhibiting mTOR in ulcerative colitis. Exp Cell Res 2020; 388:111820. [PMID: 31923427 DOI: 10.1016/j.yexcr.2020.111820] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Revised: 12/24/2019] [Accepted: 01/06/2020] [Indexed: 12/13/2022]
Abstract
Butyrate-induced autophagy and anti-inflammatory effects of IECs plays an important role in UC. HSP has been proved to be associated with autophagy. HSF2, as an important regulator of HSP, has been determined to be highly expressed in UC. This study was designed to elucidate the relationship between HSF2, butyrate and epithelial autophagy and the potential mechanism of HSF2-related autophagy in UC. The autophagy levels and HSF2 expression in intestinal mucosa were increased in UC patients compared to controls. In DSS colitis models, hsf2-/- mice exhibited more severe intestinal inflammation and lower autophagy levels than wild-type mice. HSF2 expression could be induced by sodium butyrate and LPS as a dose-response relationship in HT-29 cells, epigenetically via increasing histone acetylation levels at the promoter region by sodium butyrate. Autophagy induced by sodium butyrate was promoted by overexpression HSF2 in HT-29 cells. Moreover, overexpression HSF2 decreased the expression and phosphorylation levels of PI3K, Akt and mTOR induced by sodium butyrate. HSF2 might induced by sodium butyrate and inflammation and played protective roles in UC by enhancing autophagy of IECs. This indicated that HSF2 may be a critical target for autophagy modulation and a new potential therapeutic target in UC.
Collapse
Affiliation(s)
- Fengrui Zhang
- Department of Gastroenterology, First Affiliated Hospital of Kunming Medical University, Yunnan Institute of Digestive Diseases, Kunming, 650032, China.
| | - Wen Wang
- Department of Gastroenterology, First Affiliated Hospital of Kunming Medical University, Yunnan Institute of Digestive Diseases, Kunming, 650032, China.
| | - Junkun Niu
- Department of Gastroenterology, First Affiliated Hospital of Kunming Medical University, Yunnan Institute of Digestive Diseases, Kunming, 650032, China.
| | - Gang Yang
- Department of Gastroenterology, First Affiliated Hospital of Kunming Medical University, Yunnan Institute of Digestive Diseases, Kunming, 650032, China.
| | - Juan Luo
- Department of Gastroenterology, First Affiliated Hospital of Kunming Medical University, Yunnan Institute of Digestive Diseases, Kunming, 650032, China.
| | - Danfeng Lan
- Department of Gastroenterology, First Affiliated Hospital of Kunming Medical University, Yunnan Institute of Digestive Diseases, Kunming, 650032, China.
| | - Jing Wu
- Department of Gastroenterology, First Affiliated Hospital of Kunming Medical University, Yunnan Institute of Digestive Diseases, Kunming, 650032, China.
| | - Maojuan Li
- Department of General Surgery, First Affiliated Hospital of Kunming Medical University, Yunnan Institute of Digestive Diseases, Kunming, 650032, China.
| | - Yang Sun
- Department of Gastroenterology, First Affiliated Hospital of Kunming Medical University, Yunnan Institute of Digestive Diseases, Kunming, 650032, China.
| | - Kunhua Wang
- Department of Gastroenterology, First Affiliated Hospital of Kunming Medical University, Yunnan Institute of Digestive Diseases, Kunming, 650032, China.
| | - Yinglei Miao
- Department of Gastroenterology, First Affiliated Hospital of Kunming Medical University, Yunnan Institute of Digestive Diseases, Kunming, 650032, China.
| |
Collapse
|
16
|
Wu Y, Hu Y, Zhou H, Zhu J, Tong Z, Qin S, Liu D. Organosulfur compounds induce cytoprotective autophagy against apoptosis by inhibiting mTOR phosphorylation activity in macrophages. Acta Biochim Biophys Sin (Shanghai) 2018; 50:1085-1093. [PMID: 30260385 DOI: 10.1093/abbs/gmy114] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2018] [Indexed: 12/14/2022] Open
Abstract
Organosulfur compounds (OSCs) are the bioactive components of garlic. Some OSCs have apoptotic or autophagy-inducing effects. Autophagy plays roles in both cytoprotection and apoptosis-related cell death, and the interaction between autophagy and apoptosis is important in the modulation of immune responses. The mechanism of an OSC-mediated effect via the interaction of autophagy and apoptosis is unknown. In this study, the effects of five OSC compounds on autophagy in the macrophage cell line RAW264.7 and primary macrophages were investigated. We found that S-allylcysteine (SAC), diallyl disulde (DADS) and diallyl tetrasulfide (DTS) treatment increased the number of autophagosomes of RAW264.7 cells, inhibited the phosphorylation of ribosomal protein S6 kinase beta-1 (p70S6K/S6K1) which is a substrate of mammalian target of rapamycin (mTOR), and significantly enhanced autophagy flux. The induction of autophagy by SAC, DADS and DTS was inhibited by stably knocking down the expression of autophagy-related gene 5 (ATG5) with short hairpin RNA (shRNA). Further experiments confirmed that SAC, DADS and DTS also induced apoptosis in RAW264.7 cells. The induction of apoptosis and Caspase 3 activity by SAC, DADS and DTS were increased by stably knocking down of ATG5 expression with shRNA in RAW264.7 cells or treating with 5 mM 3-MA in primary macrophages. Our results suggest that SAC, DADS and DTS induce both autophagy and apoptosis. The autophagy induction protects macrophages from apoptosis by inhibiting mTOR phosphorylation activity to maintain the mass of immune cells.
Collapse
Affiliation(s)
- Yanyang Wu
- College of Food Science and Technology, Hunan Agricultural University, Changsha, China
| | - Yongquan Hu
- Horticulture and Landscape College, Hunan Agricultural University, Changsha, China
- Hunan Co-Innovation Center for Utilization of Botanical Functional Ingredients, Changsha, China
- State Key Laboratory of Subhealth Intervention Technology, Changsha, China
| | - Haiyan Zhou
- Horticulture and Landscape College, Hunan Agricultural University, Changsha, China
- Hunan Co-Innovation Center for Utilization of Botanical Functional Ingredients, Changsha, China
- State Key Laboratory of Subhealth Intervention Technology, Changsha, China
| | - Jiayu Zhu
- Horticulture and Landscape College, Hunan Agricultural University, Changsha, China
- Hunan Co-Innovation Center for Utilization of Botanical Functional Ingredients, Changsha, China
- State Key Laboratory of Subhealth Intervention Technology, Changsha, China
| | - Zhongyi Tong
- Department of Pathology, the Second Xiangya Hospital of Central South University, Changsha, China
| | - Si Qin
- College of Food Science and Technology, Hunan Agricultural University, Changsha, China
| | - Dongbo Liu
- Horticulture and Landscape College, Hunan Agricultural University, Changsha, China
- Hunan Co-Innovation Center for Utilization of Botanical Functional Ingredients, Changsha, China
- State Key Laboratory of Subhealth Intervention Technology, Changsha, China
| |
Collapse
|
17
|
Deng Y, Dai Z. Concise Commentary: The Benefits of Recycling-How Autophagy Regulation Affects Acute Pancreatitis. Dig Dis Sci 2018; 63:2651-2652. [PMID: 29767388 DOI: 10.1007/s10620-018-5115-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Yujiao Deng
- Department of Oncology, Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710004, Shaanxi, China
| | - Zhijun Dai
- Department of Oncology, Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710004, Shaanxi, China.
| |
Collapse
|
18
|
Du P, Chang Y, Dai F, Wei C, Zhang Q, Li J. Role of heat shock transcription factor 1(HSF1)-upregulated macrophage in ameliorating pressure overload-induced heart failure in mice. Gene 2018; 667:10-17. [PMID: 29678661 DOI: 10.1016/j.gene.2018.04.042] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2018] [Revised: 04/09/2018] [Accepted: 04/16/2018] [Indexed: 02/06/2023]
Abstract
In order to explore the role of macrophages in HSF1-mediated alleviation of heart failure, mice model of pressure overload-induced heart failure was established using transverse aortic constriction (TAC). Changes in cardiac function and morphology were studied in TAC and SHAM groups using ultrasonic device, tissue staining, electron microscopy, real-time quantitative polymerase chain reaction (RT-QPCR), and Western blotting. We found that mice in the TAC group showed evidence of impaired cardiac function and aggravation of fibrosis on ultrasonic and histopathological examination when compared to those in the SHAM group. The expressions of HSF1, LC3II/LC3I, Becline-1 and HIF-1, as well as autophagosome formation in TAC group were greater than that in SHAM group. On sub-group analyses in the TAC group, improved cardiac function and alleviation of fibrosis was observed in the HSF1 TG subgroup as compared to that in the wild type subgroup. Expressions of LC3II/LC3I, Becline-1 and HIF-1, too showed an obvious increase; and increased autophagosome formation was observed on electron microscopy. Opposite results were observed in the HSF1 KO subgroup. These results collectively suggest that in the pressure overload heart failure model, HSF1 promoted formation of macrophages by inducing upregulation of HIF-1 expression, through which heart failure was ameliorated.
Collapse
Affiliation(s)
- Peizhao Du
- Department of Cardiovascular Medicine, Shanghai East Hospital, Tongji University School of Medicine, Shanghai 200120, China
| | - Yaowei Chang
- Department of Cardiovascular Medicine, Shanghai East Hospital, Tongji University School of Medicine, Shanghai 200120, China
| | - Fangjie Dai
- Department of Cardiovascular Medicine, Shanghai East Hospital, Tongji University School of Medicine, Shanghai 200120, China
| | - Chunyan Wei
- Department of Cardiovascular Medicine, Shanghai East Hospital, Tongji University School of Medicine, Shanghai 200120, China
| | - Qi Zhang
- Department of Cardiovascular Medicine, Shanghai East Hospital, Tongji University School of Medicine, Shanghai 200120, China.
| | - Jiming Li
- Department of Cardiovascular Medicine, Shanghai East Hospital, Tongji University School of Medicine, Shanghai 200120, China.
| |
Collapse
|
19
|
Xia F, Deng C, Jiang Y, Qu Y, Deng J, Cai Z, Ding Y, Guo Z, Wang J. IL4 (interleukin 4) induces autophagy in B cells leading to exacerbated asthma. Autophagy 2018; 14:450-464. [PMID: 29297752 DOI: 10.1080/15548627.2017.1421884] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Allergic asthma is a common airway inflammatory disease in which B cells play important roles through IgE production and antigen presentation. SNP (single nucleotide polymorphism) analysis showed that Atg (autophagy-related) allele mutations are involved in asthma. It has been demonstrated that macroautophagy/autophagy is essential for B cell survival, plasma cell differentiation and immunological memory maintenance. However, whether B cell autophagy participates in asthma pathogenesis remains to be investigated. In this report, we found that autophagy was enhanced in pulmonary B cells from asthma-prone mice. Autophagy deficiency in B cells led to attenuated immunopathological symptoms in asthma-prone mice. Further investigation showed that IL4 (interleukin 4), a key effector Th2 cytokine in allergic asthma, was critical for autophagy induction in B cells both in vivo and in vitro, which further sustained B cell survival and enhanced antigen presentation by B cells. Moreover, IL4-induced autophagy depended on JAK signaling via an MTOR-independent, PtdIns3K-dependent pathway. Together, our data indicate that B cell autophagy aggravates experimental asthma through multiple mechanisms.
Collapse
Affiliation(s)
- Fucan Xia
- a Institute of Immunology , Zhejiang University School of Medicine , Hangzhou , China
| | - Changwen Deng
- b Department of Respiratory Medicine , Changhai Hospital , Second Military Medical University , Shanghai , China
| | - Yanyan Jiang
- c National Key Laboratory of Medical Immunology & Institute of Immunology , Second Military Medical University , Shanghai , China
| | - Yulan Qu
- b Department of Respiratory Medicine , Changhai Hospital , Second Military Medical University , Shanghai , China
| | - Jiewen Deng
- c National Key Laboratory of Medical Immunology & Institute of Immunology , Second Military Medical University , Shanghai , China
| | - Zhijian Cai
- a Institute of Immunology , Zhejiang University School of Medicine , Hangzhou , China
| | - Yuanyuan Ding
- d National Key Laboratory of Medical Molecular Biology & Department of Immunology , Institute of Basic Medical Sciences , Peking Union Medical College , Chinese Academy of Medical Sciences , Beijing , China
| | - Zhenhong Guo
- c National Key Laboratory of Medical Immunology & Institute of Immunology , Second Military Medical University , Shanghai , China
| | - Jianli Wang
- a Institute of Immunology , Zhejiang University School of Medicine , Hangzhou , China
| |
Collapse
|
20
|
Hu J, Hu Z, Wang X, Gu M, Gao Z, Liang Y, Ma C, Liu X, Hu S, Chen S, Peng D, Jiao X, Liu X. Deep sequencing of the mouse lung transcriptome reveals distinct long non-coding RNAs expression associated with the high virulence of H5N1 avian influenza virus in mice. Virulence 2018; 9:1092-1111. [PMID: 30052469 PMCID: PMC6086314 DOI: 10.1080/21505594.2018.1475795] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2018] [Accepted: 05/08/2018] [Indexed: 01/22/2023] Open
Abstract
Long non-coding RNAs (lncRNAs) play multiple key regulatory roles in various biological processes. However, their function in influenza A virus (IAV) pathogenicity remains largely unexplored. Here, using next generation sequencing, we systemically compared the whole-transcriptome response of the mouse lung infected with either the highly pathogenic (A/Chicken/Jiangsu/k0402/2010, CK10) or the nonpathogenic (A/Goose/Jiangsu/k0403/2010, GS10) H5N1 virus. A total of 126 significantly differentially expressed (SDE) lncRNAs from three replicates were identified to be associated with the high virulence of CK10, whereas 94 SDE lncRNAs were related with GS10. Functional category analysis suggested that the SDE lncRNAs-coexpressed mRNAs regulated by CK10 were highly related with aberrant and uncontrolled inflammatory responses. Further canonical pathway analysis also confirmed that these targets were highly enriched for inflammatory-related pathways. Moreover, 9 lncRNAs and 17 lncRNAs-coexpressed mRNAs associated with a large number of targeted genes were successfully verified by qRT-PCR. One targeted lncRNA (NONMMUT011061) that was markedly activated and correlated with a great number of mRNAs was selected for further in-depth analysis, including predication of transcription factors, potential interacting proteins, genomic location, coding ability and construction of the secondary structure. More importantly, NONMMUT011061 was also distinctively stimulated during the highly pathogenic H5N8 virus infection in mice, suggesting a potential universal role of NONMMUT011061 in the pathogenesis of different H5 IAV. Altogether, these results provide a subset of lncRNAs that might play important roles in the pathogenesis of influenza virus and add the lncRNAs to the vast repertoire of host factors utilized by IAV for infection and persistence.
Collapse
Affiliation(s)
- Jiao Hu
- Animal Infectious Disease Laboratory, School of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, China
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonosis, Yangzhou University, Yangzhou, Jiangsu, China
- Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agri-food Safety and Quality, Ministry of Agriculture of China (26116120), Yangzhou University, Yangzhou, China
| | - Zenglei Hu
- Animal Infectious Disease Laboratory, School of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, China
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonosis, Yangzhou University, Yangzhou, Jiangsu, China
- Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agri-food Safety and Quality, Ministry of Agriculture of China (26116120), Yangzhou University, Yangzhou, China
| | - Xiaoquan Wang
- Animal Infectious Disease Laboratory, School of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, China
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonosis, Yangzhou University, Yangzhou, Jiangsu, China
- Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agri-food Safety and Quality, Ministry of Agriculture of China (26116120), Yangzhou University, Yangzhou, China
| | - Min Gu
- Animal Infectious Disease Laboratory, School of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, China
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonosis, Yangzhou University, Yangzhou, Jiangsu, China
- Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agri-food Safety and Quality, Ministry of Agriculture of China (26116120), Yangzhou University, Yangzhou, China
| | - Zhao Gao
- Animal Infectious Disease Laboratory, School of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, China
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonosis, Yangzhou University, Yangzhou, Jiangsu, China
- Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agri-food Safety and Quality, Ministry of Agriculture of China (26116120), Yangzhou University, Yangzhou, China
| | - Yanyan Liang
- Animal Infectious Disease Laboratory, School of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, China
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonosis, Yangzhou University, Yangzhou, Jiangsu, China
- Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agri-food Safety and Quality, Ministry of Agriculture of China (26116120), Yangzhou University, Yangzhou, China
| | - Chunxi Ma
- Animal Infectious Disease Laboratory, School of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, China
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonosis, Yangzhou University, Yangzhou, Jiangsu, China
- Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agri-food Safety and Quality, Ministry of Agriculture of China (26116120), Yangzhou University, Yangzhou, China
| | - Xiaowen Liu
- Animal Infectious Disease Laboratory, School of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, China
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonosis, Yangzhou University, Yangzhou, Jiangsu, China
- Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agri-food Safety and Quality, Ministry of Agriculture of China (26116120), Yangzhou University, Yangzhou, China
| | - Shunlin Hu
- Animal Infectious Disease Laboratory, School of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, China
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonosis, Yangzhou University, Yangzhou, Jiangsu, China
- Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agri-food Safety and Quality, Ministry of Agriculture of China (26116120), Yangzhou University, Yangzhou, China
| | - Sujuan Chen
- Animal Infectious Disease Laboratory, School of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, China
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonosis, Yangzhou University, Yangzhou, Jiangsu, China
- Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agri-food Safety and Quality, Ministry of Agriculture of China (26116120), Yangzhou University, Yangzhou, China
| | - Daxing Peng
- Animal Infectious Disease Laboratory, School of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, China
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonosis, Yangzhou University, Yangzhou, Jiangsu, China
- Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agri-food Safety and Quality, Ministry of Agriculture of China (26116120), Yangzhou University, Yangzhou, China
| | - Xinan Jiao
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonosis, Yangzhou University, Yangzhou, Jiangsu, China
- Jiangsu Key Laboratory of Zoonosis, Yangzhou University, Yangzhou, China
- Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agri-food Safety and Quality, Ministry of Agriculture of China (26116120), Yangzhou University, Yangzhou, China
| | - Xiufan Liu
- Animal Infectious Disease Laboratory, School of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, China
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonosis, Yangzhou University, Yangzhou, Jiangsu, China
- Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agri-food Safety and Quality, Ministry of Agriculture of China (26116120), Yangzhou University, Yangzhou, China
| |
Collapse
|
21
|
HSF1 upregulates ATG4B expression and enhances epirubicin-induced protective autophagy in hepatocellular carcinoma cells. Cancer Lett 2017; 409:81-90. [DOI: 10.1016/j.canlet.2017.08.039] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2017] [Revised: 08/21/2017] [Accepted: 08/28/2017] [Indexed: 12/19/2022]
|
22
|
Xu YC, Luo CQ, Li X. Systemic inflammatory response syndrome following burns is mediated by brain natriuretic peptide/natriuretic peptide A receptor-induced shock factor 1 signaling pathway. Clin Exp Pharmacol Physiol 2017; 43:921-9. [PMID: 27385584 DOI: 10.1111/1440-1681.12620] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2016] [Revised: 07/01/2016] [Accepted: 07/05/2016] [Indexed: 01/15/2023]
Abstract
The aim of this study was to determine whether systemic inflammatory response syndrome (SIRS) in burn patients is mediated by the brain natriuretic peptide (BNP)/natriuretic peptide A receptor (NPRA)-induced heat shock factor 1 (HSF-1) signalling pathway. Mononuclear cells (MNCs) that were isolated from patients with burn injuries and SIRS mouse models and a RAW264.7 cell line were treated with normal serum or serum obtained from animals with burn injuries. In parallel, small hairpin RNAs (shRNAs) against BNP or NPRA were transfected in both cell types. Western blotting (WB) and enzyme-linked immunosorbent assay (ELISA) were used to detect protein expression and inflammatory factor levels, respectively. We found that interleukin (IL)-12, tumour necrosis factor (TNF)-α, C-reactive protein (CRP), and BNP levels were increased and IL-10 levels were decreased in the plasma and MNCs in vivo in the animal model of SIRS. Additionally, NPRA was upregulated, whereas HSF-1 was downregulated in monocytes in vivo. Treatment of RAW264.7 cells with burn serum or BNP induced IL-12, TNF-α, and CRP secretion as well as HSF-1 expression. Finally, silencing BNP with shRNA interrupted the effect of burn serum on RAW264.7 cells, and silencing NPRA blocked burn serum- and BNP-mediated changes in RAW264.7 cells. These results suggest that the interaction of NPRA with BNP secreted from circulatory MNCs as well as mononuclear macrophages leads to inflammation via HSF-1 during SIRS development following serious burn injury.
Collapse
Affiliation(s)
- Yang-Cheng Xu
- Department of Burns and Plastic Surgery, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Cheng-Qun Luo
- Department of Burns and Plastic Surgery, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Xiong Li
- Department of Burns and Plastic Surgery, The Third Xiangya Hospital, Central South University, Changsha, China
| |
Collapse
|
23
|
Zhang J, Zhao P, Quan N, Wang L, Chen X, Cates C, Rousselle T, Li J. The endotoxemia cardiac dysfunction is attenuated by AMPK/mTOR signaling pathway regulating autophagy. Biochem Biophys Res Commun 2017; 492:520-527. [PMID: 28807827 DOI: 10.1016/j.bbrc.2017.08.034] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2017] [Accepted: 08/10/2017] [Indexed: 12/11/2022]
Abstract
AMP-activated protein kinase (AMPK), an enzyme that plays a role in cellular energy homeostasis, modulates myocardial signaling in the heart. Myocardial dysfunction is a common complication of sepsis. Autophagy is involved in the aging related cardiac dysfunction. However, the role of AMPK in sepsis-induced cardiotoxicity has yet to be clarified, especially in aging. In this study, we explored the role of AMPK in lipopolysaccharide (LPS)-induced myocardial dysfunction and elucidated the potential mechanisms of AMPK/mTOR pathway regulating autophagy in young and aged mice. We harvested cardiac tissues by intraperitoneal injection of LPS treatment. The results by echocardiography, pathology, contractile and intracellular Ca2+ property as well as western blot analysis revealed that LPS induced remarkable cardiac dysfunction and cardiotoxicity in mice hearts and cardiomyocytes, which were more seriously in the aged mice. Western blot analysis indicated that the underlying mechanisms included inhibition autophagy mediated by AMPK/mTOR activation. LPS overtly promoted the expression of AMPK upstream regulator PP2A and PP2Cα. Pharmacological activation of AMPK improved cardiac function and upregulated cardiac autophagy induced by LPS in the aged mice. Collectively, our findings suggest that upregulation of autophagy by administration of AMPK could attenuate LPS-induced cardiotoxicity, which enhances our knowledge to explore new drugs and strategies for combating cardiac dysfunction induced by sepsis.
Collapse
Affiliation(s)
- Jie Zhang
- Department of Nutrition, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, China; Department of Physiology and Biophysics, Mississippi Center for Heart Research, University of Mississippi Medical Center, Jackson, MS, USA
| | - Peng Zhao
- Department of Cardiology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, China
| | - Nanhu Quan
- Department of Physiology and Biophysics, Mississippi Center for Heart Research, University of Mississippi Medical Center, Jackson, MS, USA
| | - Lin Wang
- Department of Physiology and Biophysics, Mississippi Center for Heart Research, University of Mississippi Medical Center, Jackson, MS, USA
| | - Xu Chen
- Department of Physiology and Biophysics, Mississippi Center for Heart Research, University of Mississippi Medical Center, Jackson, MS, USA
| | - Courtney Cates
- Department of Physiology and Biophysics, Mississippi Center for Heart Research, University of Mississippi Medical Center, Jackson, MS, USA
| | - Thomas Rousselle
- Department of Physiology and Biophysics, Mississippi Center for Heart Research, University of Mississippi Medical Center, Jackson, MS, USA
| | - Ji Li
- Department of Physiology and Biophysics, Mississippi Center for Heart Research, University of Mississippi Medical Center, Jackson, MS, USA.
| |
Collapse
|
24
|
Wang N, Zhang F, Yang L, Zou J, Wang H, Liu K, Liu M, Zhang H, Xiao X, Wang K. Resveratrol protects against L-arginine-induced acute necrotizing pancreatitis in mice by enhancing SIRT1-mediated deacetylation of p53 and heat shock factor 1. Int J Mol Med 2017; 40:427-437. [PMID: 28586010 PMCID: PMC5504992 DOI: 10.3892/ijmm.2017.3012] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2017] [Accepted: 05/31/2017] [Indexed: 12/13/2022] Open
Abstract
Acute necrotizing pancreatitis (ANP) is a common severe critical illness with a high mortality rate. Resveratrol, a polyphenol compound derived from various plants such as grape skin, peanut, berry and veratrum, exhibits multiple biological activities, especially potent anti‑inflammatory activity, but its effect on ANP has not yet been fully elucidated. The present study aimed to investigate the effects of resveratrol on L-arginine-induced ANP and the possible mechanisms. A mouse model of ANP was established by 2 hourly intraperitoneal injections of 8% L-arginine (4 g/kg). Then the mice were treated by intragastric administration of resveratrol (80 mg/kg) every 12 h immediately after the second injection of L-arginine. Mice with ANP showed increased apoptosis of pancreatic acinar cells, pancreatic myeloperoxidase activity, serum lactate dehydrogenase activity, amylase, tumor necrosis factor-α (TNF-α), interleukin-6 (IL-6) levels as well as decreased serum IL-10 level, pancreatic expression of heat shock factor 1 (HSF1), sirtuin 1 (SIRT1) and p53, but the ratio of acetylated HSF1 and p53 was markedly increased. Resveratrol enhanced the survival rate of mice with ANP from 47.8 to 71.4% and obviously restored the changes in mice with ANP as mentioned above. Additionally, interactions between SIRT1 and p53 and between SIRT1 and HSF1 in the pancreas of the mice were confirmed by co-immunoprecipitation. These data suggest that resveratrol protects against L-arginine-induced ANP, which may be related to the enhancement of SIRT1-mediated deacetylation of p53 and HSF1.
Collapse
Affiliation(s)
- Nian Wang
- Translational Medicine Center of Sepsis, Department of Pathophysiology, Xiangya School of Medicine, Central South University, Changsha, Hunan 410078, P.R. China
| | - Fen Zhang
- Translational Medicine Center of Sepsis, Department of Pathophysiology, Xiangya School of Medicine, Central South University, Changsha, Hunan 410078, P.R. China
| | - Liu Yang
- Translational Medicine Center of Sepsis, Department of Pathophysiology, Xiangya School of Medicine, Central South University, Changsha, Hunan 410078, P.R. China
| | - Jiang Zou
- Translational Medicine Center of Sepsis, Department of Pathophysiology, Xiangya School of Medicine, Central South University, Changsha, Hunan 410078, P.R. China
| | - Hao Wang
- Translational Medicine Center of Sepsis, Department of Pathophysiology, Xiangya School of Medicine, Central South University, Changsha, Hunan 410078, P.R. China
| | - Ke Liu
- Translational Medicine Center of Sepsis, Department of Pathophysiology, Xiangya School of Medicine, Central South University, Changsha, Hunan 410078, P.R. China
| | - Meidong Liu
- Translational Medicine Center of Sepsis, Department of Pathophysiology, Xiangya School of Medicine, Central South University, Changsha, Hunan 410078, P.R. China
| | - Huali Zhang
- Translational Medicine Center of Sepsis, Department of Pathophysiology, Xiangya School of Medicine, Central South University, Changsha, Hunan 410078, P.R. China
| | - Xianzhong Xiao
- Translational Medicine Center of Sepsis, Department of Pathophysiology, Xiangya School of Medicine, Central South University, Changsha, Hunan 410078, P.R. China
| | - Kangkai Wang
- Translational Medicine Center of Sepsis, Department of Pathophysiology, Xiangya School of Medicine, Central South University, Changsha, Hunan 410078, P.R. China
| |
Collapse
|
25
|
Interferon-γ Aggravated L-Arginine-Induced Acute Pancreatitis in Sprague-Dawley Rats and Its Possible Mechanism: Trypsinogen Activation and Autophagy Up-regulation. Pancreas 2017; 46:619-625. [PMID: 28375949 DOI: 10.1097/mpa.0000000000000826] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
OBJECTIVES It has been confirmed that the initiation of acute pancreatitis (AP) involves intracellular trypsinogen activation and local cytokines release during its early stage. The former is related to autophagic disorder, and the latter is resulting from nuclear factor-κB activation. Although great efforts have been exerted, there is still nonspecific treatment currently. Recent data showed that immunomodulatory therapy is always promising. However, the effects of interferon-γ (IFN-γ) on AP are controversial. This study is designed to elucidate the effects of IFN-γ on AP severity and explore its impacts on the major mechanisms of AP. METHODS Sprague-Dawley rats were used to establish AP model by intraperitoneal injection of 20% L-arginine (4 g/kg) twice with an interval of 1 hour. The effects of IFN-γ on the severity of AP, trypsinogen activation peptide, and tumor necrosis factor α, Interleukin-1, Interleukin-6 levels, and autophagy activity were detected. RESULTS Compared with AP rats without IFN-γ administration, AP rats with IFN-γ administration had more severe pathological changes in pancreata, greater levels of trypsinogen activation concomitant with autophagy up-regulation, and higher levels of cytokine release. CONCLUSIONS Interferon-γ aggravated L-arginine-induced AP in Sprague-Dawley rats and led to intracellular trypsinogen activation and inflammatory response. The former may be related to autophagy up-regulation.
Collapse
|
26
|
Kumsta C, Chang JT, Schmalz J, Hansen M. Hormetic heat stress and HSF-1 induce autophagy to improve survival and proteostasis in C. elegans. Nat Commun 2017; 8:14337. [PMID: 28198373 PMCID: PMC5316864 DOI: 10.1038/ncomms14337] [Citation(s) in RCA: 149] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2016] [Accepted: 12/19/2016] [Indexed: 12/13/2022] Open
Abstract
Stress-response pathways have evolved to maintain cellular homeostasis and to ensure the survival of organisms under changing environmental conditions. Whereas severe stress is detrimental, mild stress can be beneficial for health and survival, known as hormesis. Although the universally conserved heat-shock response regulated by transcription factor HSF-1 has been implicated as an effector mechanism, the role and possible interplay with other cellular processes, such as autophagy, remains poorly understood. Here we show that autophagy is induced in multiple tissues of Caenorhabditis elegans following hormetic heat stress or HSF-1 overexpression. Autophagy-related genes are required for the thermoresistance and longevity of animals exposed to hormetic heat shock or HSF-1 overexpression. Hormetic heat shock also reduces the progressive accumulation of PolyQ aggregates in an autophagy-dependent manner. These findings demonstrate that autophagy contributes to stress resistance and hormesis, and reveal a requirement for autophagy in HSF-1-regulated functions in the heat-shock response, proteostasis and ageing. Mild heat stress has beneficial effects on organismal health and survival. Here, Kumsta et al. show that a mild heat shock and HSF-1 overexpression induce autophagy in multiple tissues of C. elegans and autophagy-related genes are essential for both heat shock-induced and HSF-1–mediated stress resistance and longevity.
Collapse
Affiliation(s)
- Caroline Kumsta
- Development, Aging, and Regeneration Program, Sanford Burnham Prebys Medical Discovery Institute, 10901 North Torrey Pines Road, La Jolla, California 92037, USA
| | - Jessica T Chang
- Development, Aging, and Regeneration Program, Sanford Burnham Prebys Medical Discovery Institute, 10901 North Torrey Pines Road, La Jolla, California 92037, USA
| | - Jessica Schmalz
- Development, Aging, and Regeneration Program, Sanford Burnham Prebys Medical Discovery Institute, 10901 North Torrey Pines Road, La Jolla, California 92037, USA
| | - Malene Hansen
- Development, Aging, and Regeneration Program, Sanford Burnham Prebys Medical Discovery Institute, 10901 North Torrey Pines Road, La Jolla, California 92037, USA
| |
Collapse
|
27
|
Ferreira N, Gonçalves NP, Saraiva MJ, Almeida MR. Curcumin: A multi-target disease-modifying agent for late-stage transthyretin amyloidosis. Sci Rep 2016; 6:26623. [PMID: 27197872 PMCID: PMC4873750 DOI: 10.1038/srep26623] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2015] [Accepted: 05/04/2016] [Indexed: 12/21/2022] Open
Abstract
Transthyretin amyloidoses encompass a variety of acquired and hereditary diseases triggered by systemic extracellular accumulation of toxic transthyretin aggregates and fibrils, particularly in the peripheral nervous system. Since transthyretin amyloidoses are typically complex progressive disorders, therapeutic approaches aiming multiple molecular targets simultaneously, might improve therapy efficacy and treatment outcome. In this study, we evaluate the protective effect of physiologically achievable doses of curcumin on the cytotoxicity induced by transthyretin oligomers in vitro by showing reduction of caspase-3 activity and the levels of endoplasmic reticulum-resident chaperone binding immunoglobulin protein. When given to an aged Familial Amyloidotic Polyneuropathy mouse model, curcumin not only reduced transthyretin aggregates deposition and toxicity in both gastrointestinal tract and dorsal root ganglia but also remodeled congophilic amyloid material in tissues. In addition, curcumin enhanced internalization, intracellular transport and degradation of transthyretin oligomers by primary macrophages from aged Familial Amyloidotic Polyneuropathy transgenic mice, suggesting an impaired activation of naïve phagocytic cells exposed to transthyretin toxic intermediate species. Overall, our results clearly support curcumin or optimized derivatives as promising multi-target disease-modifying agent for late-stage transthyretin amyloidosis.
Collapse
Affiliation(s)
- Nelson Ferreira
- IBMC - Instituto de Biologia Molecular e Celular, Universidade do Porto, Rua Alfredo Allen, 208, 4200 - 135 Porto, Portugal.,i3S - Instituto de Investigação e Inovação em Saúde da Universidade do Porto, Rua Alfredo Allen, 208, 4200 - 135 Porto, Portugal
| | - Nádia P Gonçalves
- IBMC - Instituto de Biologia Molecular e Celular, Universidade do Porto, Rua Alfredo Allen, 208, 4200 - 135 Porto, Portugal.,i3S - Instituto de Investigação e Inovação em Saúde da Universidade do Porto, Rua Alfredo Allen, 208, 4200 - 135 Porto, Portugal.,ICBAS, Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Rua Jorge Viterbo Ferreira 228, 4050 - 313 Porto, Portugal
| | - Maria J Saraiva
- IBMC - Instituto de Biologia Molecular e Celular, Universidade do Porto, Rua Alfredo Allen, 208, 4200 - 135 Porto, Portugal.,i3S - Instituto de Investigação e Inovação em Saúde da Universidade do Porto, Rua Alfredo Allen, 208, 4200 - 135 Porto, Portugal.,ICBAS, Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Rua Jorge Viterbo Ferreira 228, 4050 - 313 Porto, Portugal
| | - Maria R Almeida
- IBMC - Instituto de Biologia Molecular e Celular, Universidade do Porto, Rua Alfredo Allen, 208, 4200 - 135 Porto, Portugal.,i3S - Instituto de Investigação e Inovação em Saúde da Universidade do Porto, Rua Alfredo Allen, 208, 4200 - 135 Porto, Portugal.,ICBAS, Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Rua Jorge Viterbo Ferreira 228, 4050 - 313 Porto, Portugal
| |
Collapse
|
28
|
Jiang Y, Gao M, Wang W, Lang Y, Tong Z, Wang K, Zhang H, Chen G, Liu M, Yao Y, Xiao X. Sinomenine hydrochloride protects against polymicrobial sepsis via autophagy. Int J Mol Sci 2015; 16:2559-73. [PMID: 25625512 PMCID: PMC4346851 DOI: 10.3390/ijms16022559] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2014] [Revised: 12/09/2014] [Accepted: 12/29/2014] [Indexed: 12/16/2022] Open
Abstract
Sepsis, a systemic inflammatory response to infection, is the major cause of death in intensive care units (ICUs). The mortality rate of sepsis remains high even though the treatment and understanding of sepsis both continue to improve. Sinomenine (SIN) is a natural alkaloid extracted from Chinese medicinal plant Sinomenium acutum, and its hydrochloride salt (Sinomenine hydrochloride, SIN-HCl) is widely used to treat rheumatoid arthritis (RA). However, its role in sepsis remains unclear. In the present study, we investigated the role of SIN-HCl in sepsis induced by cecal ligation and puncture (CLP) in BALB/c mice and the corresponding mechanism. SIN-HCl treatment improved the survival of BALB/c mice that were subjected to CLP and reduced multiple organ dysfunction and the release of systemic inflammatory mediators. Autophagy activities were examined using Western blotting. The results showed that CLP-induced autophagy was elevated, and SIN-HCl treatment further strengthened the autophagy activity. Autophagy blocker 3-methyladenine (3-MA) was used to investigate the mechanism of SIN-HCl in vitro. Autophagy activities were determined by examining the autophagosome formation, which was shown as microtubule-associated protein light chain 3 (LC3) puncta with green immunofluorescence. SIN-HCl reduced lipopolysaccharide (LPS)-induced inflammatory cytokine release and increased autophagy in peritoneal macrophages (PM). 3-MA significantly decreased autophagosome formation induced by LPS and SIN-HCl. The decrease of inflammatory cytokines caused by SIN-HCl was partially aggravated by 3-MA treatment. Taken together, our results indicated that SIN-HCl could improve survival, reduce organ damage, and attenuate the release of inflammatory cytokines induced by CLP, at least in part through regulating autophagy activities.
Collapse
Affiliation(s)
- Yu Jiang
- Laboratory of Shock, Department of Pathophysiology, Xiangya School of Medicine, Central South University, Changsha 410008, China.
| | - Min Gao
- Department of Critical Care Medicine, the Third Xiangya Hospital, Central South University, Changsha 410013, China.
| | - Wenmei Wang
- Laboratory of Shock, Department of Pathophysiology, Xiangya School of Medicine, Central South University, Changsha 410008, China.
| | - Yuejiao Lang
- Laboratory of Shock, Department of Pathophysiology, Xiangya School of Medicine, Central South University, Changsha 410008, China.
| | - Zhongyi Tong
- Laboratory of Shock, Department of Pathophysiology, Xiangya School of Medicine, Central South University, Changsha 410008, China.
| | - Kangkai Wang
- Laboratory of Shock, Department of Pathophysiology, Xiangya School of Medicine, Central South University, Changsha 410008, China.
| | - Huali Zhang
- Laboratory of Shock, Department of Pathophysiology, Xiangya School of Medicine, Central South University, Changsha 410008, China.
| | - Guangwen Chen
- Laboratory of Shock, Department of Pathophysiology, Xiangya School of Medicine, Central South University, Changsha 410008, China.
| | - Meidong Liu
- Laboratory of Shock, Department of Pathophysiology, Xiangya School of Medicine, Central South University, Changsha 410008, China.
| | - Yongming Yao
- Department of Microbiology and Immunology, Burns Institute, First Hospital Affiliated to the Chinese PLA General Hospital, Beijing 100037, China.
| | - Xianzhong Xiao
- Laboratory of Shock, Department of Pathophysiology, Xiangya School of Medicine, Central South University, Changsha 410008, China.
| |
Collapse
|
29
|
What’s New in Shock? May 2014. Shock 2014; 41:369-72. [DOI: 10.1097/shk.0000000000000157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|