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Lu ZQ, Zhang C, Zhao LJ, Dong W, Lv L, Lu Y, Chen XY, Zhang J, Liu XY, Xiao Z, Chen LW, Yao YM, Zhao GJ. Matrix metalloproteinase-8 regulates dendritic cell tolerance in late polymicrobial sepsis via the nuclear factor kappa-B p65/β-catenin pathway. BURNS & TRAUMA 2024; 12:tkad025. [PMID: 38425412 PMCID: PMC10903637 DOI: 10.1093/burnst/tkad025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/19/2022] [Revised: 03/24/2023] [Indexed: 03/02/2024]
Abstract
Background Tolerogenic dendritic cells (DCs) are associated with poor prognosis of sepsis. Matrix metalloproteinases (MMPs) have been shown to have immunomodulatory effects. However, whether MMPs are involved in the functional reprogramming of DCs is unknown. The study aims to investigate the role of MMPs in sepsis-induced DCs tolerance and the potential mechanisms. Methods A murine model of late sepsis was induced by cecal ligation and puncture (CLP). The expression levels of members of the MMP family were detected in sepsis-induced tolerogenic DCs by using microarray assessment. The potential roles and mechanisms underlying MMP8 in the differentiation, maturation and functional reprogramming of DCs during late sepsis were assessed both in vitro and in vivo. Results DCs from late septic mice expressed higher levels of MMP8, MMP9, MMP14, MMP19, MMP25 and MMP27, and MMP8 levels were the highest. MMP8 deficiency significantly alleviated sepsis-induced immune tolerance of DCs both in vivo and in vitro. Adoptive transfer of MMP8 knockdown post-septic bone marrow-derived DCs protected mice against sepsis-associated lethality and organ dysfunction, inhibited regulatory T-cell expansion and enhanced Th1 response. Furthermore, the effect of MMP8 on DC tolerance was found to be associated with the nuclear factor kappa-B p65/β-catenin pathway. Conclusions Increased MMP8 levels in septic DCs might serve as a negative feedback loop, thereby suppressing the proinflammatory response and inducing DC tolerance.
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Affiliation(s)
- Zhong-qiu Lu
- Department of Emergency Medicine, The First Affiliated Hospital of Wenzhou Medical University, Fanhai West Road, Ouhai District, Wenzhou 325000, China
| | - Chen Zhang
- Department of Emergency Medicine, The First Affiliated Hospital of Wenzhou Medical University, Fanhai West Road, Ouhai District, Wenzhou 325000, China
| | - Lin-jun Zhao
- Department of Emergency Medicine, The First Affiliated Hospital of Wenzhou Medical University, Fanhai West Road, Ouhai District, Wenzhou 325000, China
- Translational Medicine Research Center, Medical Innovation Research Division and Fourth Medical of the Chinese PLA General Hospital, Fucheng Road, Haidian District, Beijing 100048, China
| | - Wei Dong
- Department of Emergency Medicine, The First Affiliated Hospital of Wenzhou Medical University, Fanhai West Road, Ouhai District, Wenzhou 325000, China
| | - Liang Lv
- Department of Emergency Medicine, The First Affiliated Hospital of Wenzhou Medical University, Fanhai West Road, Ouhai District, Wenzhou 325000, China
| | - Yang Lu
- Department of Emergency Medicine, Affiliated Hangzhou First People’s Hospital, Zhejiang University School of Medicine, Huansha Road,Shangcheng District, Hangzhou 310006, China
| | - Xiao-Yan Chen
- Department of Emergency Medicine, The First Affiliated Hospital of Wenzhou Medical University, Fanhai West Road, Ouhai District, Wenzhou 325000, China
| | - Jie Zhang
- Department of Emergency Medicine, The First Affiliated Hospital of Wenzhou Medical University, Fanhai West Road, Ouhai District, Wenzhou 325000, China
| | - Xin-yong Liu
- Department of Emergency Medicine, The First Affiliated Hospital of Wenzhou Medical University, Fanhai West Road, Ouhai District, Wenzhou 325000, China
| | - Zhong Xiao
- Department of Emergency Medicine, The First Affiliated Hospital of Wenzhou Medical University, Fanhai West Road, Ouhai District, Wenzhou 325000, China
| | - Long-wang Chen
- Department of Emergency Medicine, The First Affiliated Hospital of Wenzhou Medical University, Fanhai West Road, Ouhai District, Wenzhou 325000, China
| | - Yong-ming Yao
- Department of Rheumatology, Wenzhou People's Hospital, Gu'an road, Ouhai district, Wenzhou 325000, China
| | - Guang-ju Zhao
- Department of Emergency Medicine, The First Affiliated Hospital of Wenzhou Medical University, Fanhai West Road, Ouhai District, Wenzhou 325000, China
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2
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Gatica S, Fuentes B, Rivera-Asín E, Ramírez-Céspedes P, Sepúlveda-Alfaro J, Catalán EA, Bueno SM, Kalergis AM, Simon F, Riedel CA, Melo-Gonzalez F. Novel evidence on sepsis-inducing pathogens: from laboratory to bedside. Front Microbiol 2023; 14:1198200. [PMID: 37426029 PMCID: PMC10327444 DOI: 10.3389/fmicb.2023.1198200] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Accepted: 06/05/2023] [Indexed: 07/11/2023] Open
Abstract
Sepsis is a life-threatening condition and a significant cause of preventable morbidity and mortality globally. Among the leading causative agents of sepsis are bacterial pathogens Escherichia coli, Klebsiella pneumoniae, Staphylococcus aureus, Pseudomonas aeruginosa, and Streptococcus pyogenes, along with fungal pathogens of the Candida species. Here, we focus on evidence from human studies but also include in vitro and in vivo cellular and molecular evidence, exploring how bacterial and fungal pathogens are associated with bloodstream infection and sepsis. This review presents a narrative update on pathogen epidemiology, virulence factors, host factors of susceptibility, mechanisms of immunomodulation, current therapies, antibiotic resistance, and opportunities for diagnosis, prognosis, and therapeutics, through the perspective of bloodstream infection and sepsis. A list of curated novel host and pathogen factors, diagnostic and prognostic markers, and potential therapeutical targets to tackle sepsis from the research laboratory is presented. Further, we discuss the complex nature of sepsis depending on the sepsis-inducing pathogen and host susceptibility, the more common strains associated with severe pathology and how these aspects may impact in the management of the clinical presentation of sepsis.
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Affiliation(s)
- Sebastian Gatica
- Facultad de Ciencias de la Vida, Universidad Andres Bello, Santiago, Chile
- Millennium Institute on Immunology and Immunotherapy, Santiago, Chile
| | - Brandon Fuentes
- Facultad de Ciencias de la Vida, Universidad Andres Bello, Santiago, Chile
- Millennium Institute on Immunology and Immunotherapy, Santiago, Chile
| | - Elizabeth Rivera-Asín
- Facultad de Ciencias de la Vida, Universidad Andres Bello, Santiago, Chile
- Millennium Institute on Immunology and Immunotherapy, Santiago, Chile
| | - Paula Ramírez-Céspedes
- Facultad de Ciencias de la Vida, Universidad Andres Bello, Santiago, Chile
- Millennium Institute on Immunology and Immunotherapy, Santiago, Chile
| | - Javiera Sepúlveda-Alfaro
- Departamento de Genética Molecular y Microbiología, Facultad de Ciencias Biológicas, Millennium Institute on Immunology and Immunotherapy, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Eduardo A. Catalán
- Departamento de Genética Molecular y Microbiología, Facultad de Ciencias Biológicas, Millennium Institute on Immunology and Immunotherapy, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Susan M. Bueno
- Departamento de Genética Molecular y Microbiología, Facultad de Ciencias Biológicas, Millennium Institute on Immunology and Immunotherapy, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Alexis M. Kalergis
- Departamento de Genética Molecular y Microbiología, Facultad de Ciencias Biológicas, Millennium Institute on Immunology and Immunotherapy, Pontificia Universidad Católica de Chile, Santiago, Chile
- Departamento de Endocrinología, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Felipe Simon
- Facultad de Ciencias de la Vida, Universidad Andres Bello, Santiago, Chile
- Millennium Institute on Immunology and Immunotherapy, Santiago, Chile
| | - Claudia A. Riedel
- Facultad de Ciencias de la Vida, Universidad Andres Bello, Santiago, Chile
- Millennium Institute on Immunology and Immunotherapy, Santiago, Chile
| | - Felipe Melo-Gonzalez
- Facultad de Ciencias de la Vida, Universidad Andres Bello, Santiago, Chile
- Millennium Institute on Immunology and Immunotherapy, Santiago, Chile
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3
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Orai1 overexpression improves sepsis-induced T-lymphocyte immunosuppression and acute organ dysfunction in mice. Heliyon 2022; 8:e12082. [PMID: 36568656 PMCID: PMC9768300 DOI: 10.1016/j.heliyon.2022.e12082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Revised: 08/20/2022] [Accepted: 11/25/2022] [Indexed: 12/12/2022] Open
Abstract
Immune paralysis induced by sepsis, especially dysfunction of CD4+ T cells, leads to an increased risk of infection. In sepsis, abnormal differentiation of T lymphocytes is associated with multiorgan dysfunction syndrome. In T lymphocytes, the Orai1/nuclear factor of activated T Cells (NFAT) pathway is a critical mediator of infection, inflammation, and autoimmunity. In this study, we confirmed immunosuppression of splenic CD4+ T cells and abnormal differentiation of T lymphocytes in septic mice. Furthermore, we found that the Orai1/NFAT signaling pathway was inhibited in septic mice; however, the overexpression of Orai1 not only improved immune function of T cells in sepsis but also reduced the mortality and organ damage in septic mice. Moreover, the overexpression of Orai1 could reverse the increases in the numbers of T regulatory and T helper 17 cells in septic mice. These data suggest that the Orai1-mediated NFAT signaling pathway can improve sepsis-induced T-lymphocyte immunosuppression and acute organ dysfunction.
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4
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Zhao GJ, Jiang DW, Cai WC, Chen XY, Dong W, Chen LW, Hong GL, Wu B, Yao YM, Lu ZQ. CD71+ Erythroid Cell Expansion in Adult Sepsis: Potential Causes and Role in Prognosis and Nosocomial Infection Prediction. Front Immunol 2022; 13:830025. [PMID: 35251018 PMCID: PMC8896534 DOI: 10.3389/fimmu.2022.830025] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Accepted: 01/26/2022] [Indexed: 12/29/2022] Open
Abstract
Background Immune suppression contributes to nosocomial infections (NIs) and poor prognosis in sepsis. Recent studies revealed that CD71+ erythroid cells had unappreciated immunosuppressive functions. This study aimed to investigate the values of CD71+ erythroid cells (CECs) in predicting NIs and prognosis among adult septic patients. The potential factors associated with the expansion of CECs were also explored. Methods In total, 112 septic patients and 32 critically ill controls were enrolled. The frequencies of CD71+ cells, CD71+CD235a+ cells, and CD45+ CECs were measured by flow cytometry. The associations between CECs and NIs and 30-day mortality were assessed by ROC curve analysis and Cox and competing-risk regression models. Factors associated with the frequency of CECs were identified by linear regression analysis. Results The percentage of CD71+ cells, CECs, and CD45+ CECs were higher in septic patients than critically ill controls. In septic patients, the percentages of CD71+ cells, CECs, and CD45+ CECs were associated with NI development, while CD71+ cells and CECs were independently associated with 30-day mortality. Linear regression analysis showed that the levels of interleukin (IL)-6 and interferon (IFN)-γ were positively associated with the frequencies of CD71+ cells, CECs, and CD45+ CECs, while IL-10 was negatively associated with them. Additionally, the levels of red blood cells (RBCs) were negatively associated with the percentage of CD45+ CECs. Conclusions CECs were expanded in sepsis and can serve as independent predictors of the development of NI and 30-day mortality. Low levels of RBCs and high levels of IL-6 and IFN-γ may contribute to the expansion of CECs in sepsis. Trial Registration ChiCTR, ChiCTR1900024887. Registered 2 August 2019, http://www.chictr.org.cn/showproj.aspx?proj=38645
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Affiliation(s)
- Guang-ju Zhao
- Emergency Intensive Care Unit, Emergency Department, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Dan-wei Jiang
- Emergency Intensive Care Unit, Emergency Department, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Wen-chao Cai
- Emergency Intensive Care Unit, Emergency Department, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Xiao-Yan Chen
- Emergency Intensive Care Unit, Emergency Department, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Wei Dong
- Emergency Intensive Care Unit, Emergency Department, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Long-wang Chen
- Emergency Intensive Care Unit, Emergency Department, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Guang-liang Hong
- Emergency Intensive Care Unit, Emergency Department, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Bin Wu
- Emergency Intensive Care Unit, Emergency Department, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Yong-ming Yao
- Trauma Research Center, Fourth Medical of the Chinese People’s Liberation Army (PLA) General Hospital, Beijing, China
- *Correspondence: Zhong-qiu Lu, ; Yong-ming Yao,
| | - Zhong-qiu Lu
- Emergency Intensive Care Unit, Emergency Department, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
- *Correspondence: Zhong-qiu Lu, ; Yong-ming Yao,
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5
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Ethyl pyruvate, a versatile protector in inflammation and autoimmunity. Inflamm Res 2022; 71:169-182. [PMID: 34999919 PMCID: PMC8742706 DOI: 10.1007/s00011-021-01529-z] [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: 09/14/2021] [Revised: 11/26/2021] [Accepted: 11/27/2021] [Indexed: 12/18/2022] Open
Abstract
Ethyl pyruvate (EP) has potent influence on redox processes, cellular metabolism, and inflammation. It has been intensively studied in numerous animal models of systemic and organ-specific disorders whose pathogenesis involves a strong immune component. Here, basic chemical and biological properties of EP are discussed, with an emphasis on its redox and metabolic activity. Further, its influence on myeloid and T cells is considered, as well as on intracellular signaling beyond its effect on immune cells. Also, the effects of EP on animal models of chronic inflammatory and autoimmune disorders are presented. Finally, a possibility to apply EP as a treatment for such diseases in humans is discussed. Scientific papers cited in this review were identified using the PubMed search engine that relies on the MEDLINE database. The reference list covers the most important findings in the field in the past twenty years.
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6
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Fu M, Guo J, Zhang Y, Zhao Y, Zhang Y, Wang Z, Hou Z. Effect of Wearing Medical Masks on Perioperative Respiratory Complications in Older Adults with Hip Fracture: A Retrospective Cohort Study. Clin Interv Aging 2021; 16:1967-1974. [PMID: 34824528 PMCID: PMC8610772 DOI: 10.2147/cia.s333238] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Accepted: 11/06/2021] [Indexed: 11/23/2022] Open
Abstract
Purpose Respiratory complication is one of the major challenges in the treatment of older adults with hip fractures. However, no study so far has investigated the effect of wearing medical masks on the prevention of perioperative respiratory complications in these patients. Patients and Methods In this retrospective cohort study, 1016 consecutive patients aged ≥65 years with hip fractures were included and assigned to two groups: the control group and the observation group. The two groups received the same perioperative management modalities. In addition, patients in the observation group were asked to wear medical masks for protection. Data of patients’ demographics, fracture type, surgical methods, comorbidities, the incidence of perioperative respiratory and other complications, and hospital outcomes were collected and compared between the two groups. Subgroup analyses were also performed stratified by fracture types. Results A total of 1016 patients (292 females and 724 males) with a mean age of 79.4±7.3 years were analyzed in the study, including 533 in the control group and 483 in the observation group. The overall incidence of perioperative respiratory complication, and the incidence of pulmonary infection, respiratory failure and arrhythmia in the observation group were significantly lower than the control group, especially in winter and spring. There was no difference in other complications, hospital length of stay, and total hospital costs. Further subgroup analyses showed that the incidence of heart failure and arrhythmia in the observation group was lower than that in the control group for patients with femoral neck fractures, which was different from patients with intertrochanteric fractures. Conclusion The incidence of perioperative respiratory complications, including pulmonary infection and respiratory failure, could be reduced in older adults with hip fractures by strengthening personal protection, including wearing medical masks, especially in winter and spring. Wearing medical masks could also effectively reduce the incidence of perioperative heart failure and arrhythmia in femoral neck fracture patients and do not increase the incidence of other complications and the burden of hospitalization.
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Affiliation(s)
- Mingming Fu
- Department of Geriatric Orthopedics, The Third Hospital of Hebei Medical University, Shijiazhuang, Hebei, People's Republic of China
| | - Junfei Guo
- Department of Orthopaedic Surgery, the Third Hospital of Hebei Medical University, Shijiazhuang, Hebei, 050051, People's Republic of China
| | - Yaqian Zhang
- Department of Geriatric Orthopedics, The Third Hospital of Hebei Medical University, Shijiazhuang, Hebei, People's Republic of China
| | - Yuqi Zhao
- Department of Geriatric Orthopedics, The Third Hospital of Hebei Medical University, Shijiazhuang, Hebei, People's Republic of China
| | - Yingze Zhang
- Department of Orthopaedic Surgery, the Third Hospital of Hebei Medical University, Shijiazhuang, Hebei, 050051, People's Republic of China.,NHC Key Laboratory of Intelligent Orthopaedic Equipment (The Third Hospital of Hebei Medical University), Shijiazhuang, China.,Chinese Academy of Engineering, Beijing, 100088, People's Republic of China
| | - Zhiqian Wang
- Department of Geriatric Orthopedics, The Third Hospital of Hebei Medical University, Shijiazhuang, Hebei, People's Republic of China
| | - Zhiyong Hou
- Department of Orthopaedic Surgery, the Third Hospital of Hebei Medical University, Shijiazhuang, Hebei, 050051, People's Republic of China.,NHC Key Laboratory of Intelligent Orthopaedic Equipment (The Third Hospital of Hebei Medical University), Shijiazhuang, China
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7
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Belo VA, Pereira JA, Souza SFD, Tana FDL, Pereira BP, Lopes DDO, Ceron CS, Novaes RD, Corsetti PP, de Almeida LA. The role of IL-10 in immune responses against Pseudomonas aeruginosa during acute lung infection. Cell Tissue Res 2020; 383:1123-1133. [PMID: 33165659 DOI: 10.1007/s00441-020-03308-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Accepted: 09/22/2020] [Indexed: 11/28/2022]
Abstract
Pseudomonas aeruginosa is considered an opportunistic pathogen of great clinical importance. The clearance of this bacterium occurs through recognition of the pathogen by innate immune system receptors, leading to a lung inflammatory response. However, this response must be controlled via immunoregulatory pathways. In this study, we evaluate the role of endogenous murine IL-10 after acute infection with the virulent strain P. aeruginosa PA14. To assess the role of IL-10, intratracheal infection with the PA14 strain was performed in C57BL/6 or IL-10 KO mice. The PA14 strain was recovered in both types of animals, although IL-10 KO mice presented a higher number of viable bacteria in the lung when compared to the C57BL/6 group. Histopathological and stereological analyses showed that IL-10 KO mice had higher tissue damage and inflammatory infiltrate when compared to control animals. The activity of MMP-9 but not MMP-2, as well as IL-6 and TNF-α expression, were augmented in the lungs of infected animals and was much more evident in IL-10 KO animals when compared to the other analyzed groups. This work indicates that endogenous IL-10 control P. aeruginosa infection, the expression of pro-inflammatory genes, MMP-9 activity and histopathological processes of the infectious process in question.
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Affiliation(s)
- Valéria Aparecida Belo
- Departmento de Microbiologia E Imunologia, Universidade Federal de Alfenas, Alfenas, Brazil
| | - Jéssica Assis Pereira
- Departmento de Microbiologia E Imunologia, Universidade Federal de Alfenas, Alfenas, Brazil
| | - Sara Franchin D Souza
- Departmento de Microbiologia E Imunologia, Universidade Federal de Alfenas, Alfenas, Brazil
| | - Fernanda de Lima Tana
- Departmento de Microbiologia E Imunologia, Universidade Federal de Alfenas, Alfenas, Brazil
| | - Bruna P Pereira
- Faculdade de Ciências Farmacêuticas, Universidade Federal de Alfenas, Alfenas, Brazil
| | - Débora de Oliveira Lopes
- Laboratório de Biologia Molecular, Universidade Federal de São João Del-Rei (CCO), Divinópolis, Brazil
| | - Carla S Ceron
- Faculdade de Ciências Farmacêuticas, Universidade Federal de Alfenas, Alfenas, Brazil
| | - Rômulo D Novaes
- Departamento de Biologia Estrutural, Universidade Federal de Alfenas, Alfenas, Brazil
| | - Patrícia Paiva Corsetti
- Laboratório de Imunologia das Doenças Infecciosas E Crônicas, Universidade José Do Rosário Vellano, Alfenas, Minas Gerais, Brazil
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8
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TREML4 receptor regulates inflammation and innate immune cell death during polymicrobial sepsis. Nat Immunol 2020; 21:1585-1596. [DOI: 10.1038/s41590-020-0789-z] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Accepted: 08/21/2020] [Indexed: 12/20/2022]
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9
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Huang Q, Fu Y, Zhang S, Zhang Y, Chen S, Zhang Z. Ethyl pyruvate inhibits glioblastoma cells migration and invasion through modulation of NF-κB and ERK-mediated EMT. PeerJ 2020; 8:e9559. [PMID: 32742812 PMCID: PMC7380274 DOI: 10.7717/peerj.9559] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Accepted: 06/25/2020] [Indexed: 12/20/2022] Open
Abstract
Background Glioblastoma is a grade IV glioma with the highest degree of malignancy and extremely high incidence. Because of the poor therapeutic effect of surgery and radiochemotherapy, glioblastoma has a high recurrence rate and lethality, and is one of the most challenging tumors in the field of oncology. Ethyl pyruvate (EP), a stable lipophilic pyruvic acid derivative, has anti-inflammatory, antioxidant, immunomodulatory and other cellular protective effects. It has been reported that EP has potent anti-tumor effects on many types of tumors, including pancreatic cancer, prostate cancer, liver cancer, gastric cancer. However, whether EP has anti-tumor effect on glioblastoma or not is still unclear. Methods Glioblastoma U87 and U251 cells were treated with different concentrations of EP for 24 h or 48 h. CCK8 assay and Colony-Formation assay were performed to test the viability and proliferation. Wound-healing assay and Transwell assay were carried out to measure cell invasion and migration. Western blot was not only used to detect the protein expression of epithelial-mesenchymal transition (EMT)-related molecules, but also to detect the expression and activation levels of NF-κB (p65) and Extracellular Signal Regulated Kinase (ERK). Results In glioblastoma U87 and U251 cells treated with EP, the viability, proliferation, migration, invasion abilities were inhibited in a dose-dependent manner. EP inhibited EMT and the activation of NF-κB (p65) and ERK. With NF-κB (p65) and ERK activated, EMT, migration and invasion of U87 and U251 cells were promoted. However the activation of NF-κB (p65) and ERK were decreased, EMT, migration and invasion abilities were inhibited in U87 and U251 cells treated with EP. Conclusion EP inhibits glioblastoma cells migration and invasion by blocking NF-κB and ERK-mediated EMT.
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Affiliation(s)
- Qing Huang
- Department of Pathogen Biology, School of Basic Medicine, Central South University, Changsha, China
| | - Yongming Fu
- Department of Infectious Diseases and Hunan Key Laboratory of Viral Hepatitis, Xiangya Hospital, Central South University, Changsha, China
| | - Shan Zhang
- Department of Pathogen Biology, School of Basic Medicine, Central South University, Changsha, China
| | - Youxiang Zhang
- Department of Pathogen Biology, School of Basic Medicine, Central South University, Changsha, China
| | - Simin Chen
- Department of Pathogen Biology, School of Basic Medicine, Central South University, Changsha, China
| | - Zuping Zhang
- Department of Pathogen Biology, School of Basic Medicine, Central South University, Changsha, China
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10
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Baicalin suppresses Th1 and Th17 responses and promotes Treg response to ameliorate sepsis-associated pancreatic injury via the RhoA-ROCK pathway. Int Immunopharmacol 2020; 86:106685. [PMID: 32570032 DOI: 10.1016/j.intimp.2020.106685] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Revised: 05/24/2020] [Accepted: 06/04/2020] [Indexed: 12/23/2022]
Abstract
Recent studies have reported that the imbalance of T helper 1 cell (Th1), Th17 and regulatory T cell (Treg) have been confirmed to play a vital role in the development of sepsis and other inflammatory diseases. Baicalin (BA) has anti-inflammatory properties and improves survival in sepsis. We investigated whether baicalin could regulate Th1, Th17 and Treg responses to ameliorate sepsis-associated pancreatic injury through the ras homolog family member A (RhoA)-Rho kinase (ROCK) pathway. The sepsis model was established by using the cecal ligation and puncture (CLP) method. Fifty mice were randomly divided into five groups (n = 10): sham group, model group, low-dose group (BA-L, 100 mg/kg of baicalin), medium-dose group (BA-M, 200 mg/kg of baicalin) and highdose group (BA-H, 300 mg/kg of baicalin). The effects of baicalin on the pancreatic injury, on changes of Th1, Th17 and Treg cells in vivo and in vitro, on RhoA, ROCK1 and signal transducer and activator of transcription (STAT) signaling pathways, and on levels of interferon-γ (IFN-γ), interleukin-17 (IL-17) and IL-10 were examined. Treatment of the CLP mice with baicalin significantly reduced the extent, scope and severity of the pathological changes of sepsis-associated pancreatic injury. Baicalin evidently reduced Th1 and Th17 cells and increased Treg cells in peripheral blood, spleen, pancreatic tissue and significantly inhibited T-box protein expressed in T cells (T-bet), retinoic acid receptor-related orphan receptor γt (RORγt) and increased forkhead/winged helix transcription factor (Foxp3) expressions in the pancreatic tissue. Baicalin reduced the expressions of RhoA, ROCK1, phosphorylated STAT4 (p-STAT4), p-STAT3 and increased the expression of p-STAT5 in peripheral blood, spleen and pancreatic tissue. Baicalin reduced the expressions of IFN-γ and IL-17 and increased the IL-10 in serum and pancreatic tissue. Baicalin is capable of ameliorating sepsis-associated pancreatic injury and regulating Th1, Th17 and Treg responses in sepsis. The present study provided a potential adjunctive therapy for treating pancreatic injury in sepsis, and further study is needed to reveal its deeper mechanisms.
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11
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Baudesson de Chanville C, Chousterman BG, Hamon P, Laviron M, Guillou N, Loyher PL, Meghraoui-Kheddar A, Barthelemy S, Deterre P, Boissonnas A, Combadière C. Sepsis Triggers a Late Expansion of Functionally Impaired Tissue-Vascular Inflammatory Monocytes During Clinical Recovery. Front Immunol 2020; 11:675. [PMID: 32425929 PMCID: PMC7212400 DOI: 10.3389/fimmu.2020.00675] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Accepted: 03/25/2020] [Indexed: 12/20/2022] Open
Abstract
Sepsis is characterized by a systemic inflammation that can cause an immune dysfunction, for which the underlying mechanisms are unclear. We investigated the impact of cecal ligature and puncture (CLP)-mediated polymicrobial sepsis on monocyte (Mo) mobilization and functions. Our results show that CLP led to two consecutive phases of Mo deployment. The first one occurred within the first 3 days after the induction of the peritonitis, while the second phase was of a larger amplitude and extended up to a month after apparent clinical recovery. The latter was associated with the expansion of Mo in the tissue reservoirs (bone marrow and spleen), their release in the blood and their accumulation in the vasculature of peripheral non-lymphoid tissues. It occurred even after antibiotic treatment but relied on inflammatory-dependent pathways and inversely correlated with increased susceptibility and severity to a secondary infection. The intravascular lung Mo displayed limited activation capacity, impaired phagocytic functions and failed to transfer efficient protection against a secondary infection into monocytopenic CCR2-deficient mice. In conclusion, our work unveiled key dysfunctions of intravascular inflammatory Mo during the recovery phase of sepsis and provided new insights to improve patient protection against secondary infections.
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Affiliation(s)
| | - Benjamin Glenn Chousterman
- Inserm UMRS 1160, Département d'Anesthésie-Réanimation, Hôpitaux Universitaires Lariboisière-Saint-Louis, Paris, France
| | - Pauline Hamon
- Sorbonne Université, Inserm, CNRS, Centre d'Immunologie et des Maladies Infectieuses, Cimi-Paris, Paris, France
| | - Marie Laviron
- Sorbonne Université, Inserm, CNRS, Centre d'Immunologie et des Maladies Infectieuses, Cimi-Paris, Paris, France
| | - Noelline Guillou
- Sorbonne Université, Inserm, CNRS, Centre d'Immunologie et des Maladies Infectieuses, Cimi-Paris, Paris, France
| | - Pierre Louis Loyher
- Sorbonne Université, Inserm, CNRS, Centre d'Immunologie et des Maladies Infectieuses, Cimi-Paris, Paris, France
| | - Aida Meghraoui-Kheddar
- Sorbonne Université, Inserm, CNRS, Centre d'Immunologie et des Maladies Infectieuses, Cimi-Paris, Paris, France
| | - Sandrine Barthelemy
- Sorbonne Université, Inserm, CNRS, Centre d'Immunologie et des Maladies Infectieuses, Cimi-Paris, Paris, France
| | - Philippe Deterre
- Sorbonne Université, Inserm, CNRS, Centre d'Immunologie et des Maladies Infectieuses, Cimi-Paris, Paris, France
| | - Alexandre Boissonnas
- Sorbonne Université, Inserm, CNRS, Centre d'Immunologie et des Maladies Infectieuses, Cimi-Paris, Paris, France
| | - Christophe Combadière
- Sorbonne Université, Inserm, CNRS, Centre d'Immunologie et des Maladies Infectieuses, Cimi-Paris, Paris, France
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12
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Wang M, Gauthier A, Daley L, Dial K, Wu J, Woo J, Lin M, Ashby C, Mantell LL. The Role of HMGB1, a Nuclear Damage-Associated Molecular Pattern Molecule, in the Pathogenesis of Lung Diseases. Antioxid Redox Signal 2019; 31:954-993. [PMID: 31184204 PMCID: PMC6765066 DOI: 10.1089/ars.2019.7818] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Accepted: 06/07/2019] [Indexed: 12/11/2022]
Abstract
Significance: High-mobility group protein box 1 (HMGB1), a ubiquitous nuclear protein, regulates chromatin structure and modulates the expression of many genes involved in the pathogenesis of lung cancer and many other lung diseases, including those that regulate cell cycle control, cell death, and DNA replication and repair. Extracellular HMGB1, whether passively released or actively secreted, is a danger signal that elicits proinflammatory responses, impairs macrophage phagocytosis and efferocytosis, and alters vascular remodeling. This can result in excessive pulmonary inflammation and compromised host defense against lung infections, causing a deleterious feedback cycle. Recent Advances: HMGB1 has been identified as a biomarker and mediator of the pathogenesis of numerous lung disorders. In addition, post-translational modifications of HMGB1, including acetylation, phosphorylation, and oxidation, have been postulated to affect its localization and physiological and pathophysiological effects, such as the initiation and progression of lung diseases. Critical Issues: The molecular mechanisms underlying how HMGB1 drives the pathogenesis of different lung diseases and novel therapeutic approaches targeting HMGB1 remain to be elucidated. Future Directions: Additional research is needed to identify the roles and functions of modified HMGB1 produced by different post-translational modifications and their significance in the pathogenesis of lung diseases. Such studies will provide information for novel approaches targeting HMGB1 as a treatment for lung diseases.
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Affiliation(s)
- Mao Wang
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, Queens, New York
| | - Alex Gauthier
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, Queens, New York
| | - LeeAnne Daley
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, Queens, New York
| | - Katelyn Dial
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, Queens, New York
| | - Jiaqi Wu
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, Queens, New York
| | - Joanna Woo
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, Queens, New York
| | - Mosi Lin
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, Queens, New York
| | - Charles Ashby
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, Queens, New York
| | - Lin L. Mantell
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, Queens, New York
- Center for Inflammation and Immunology, The Feinstein Institute for Medical Research, Northwell Health, Manhasset, New York
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13
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Kartchner LB, Gode CJ, Dunn JLM, Glenn LI, Duncan DN, Wolfgang MC, Cairns BA, Maile R. One-hit wonder: Late after burn injury, granulocytes can clear one bacterial infection but cannot control a subsequent infection. Burns 2019; 45:627-640. [PMID: 30833100 DOI: 10.1016/j.burns.2018.08.019] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2018] [Revised: 07/04/2018] [Accepted: 08/07/2018] [Indexed: 12/14/2022]
Abstract
OBJECTIVE Burn injury induces an acute hyperactive immune response followed by a chronic immune dysregulation that leaves those afflicted susceptible to multiple secondary infections. Many murine models are able to recapitulate the acute immune response to burn injury, yet few models are able to recapitulate long-term immune suppression and thus chronic susceptibility to bacterial infections seen in burn patients. This has hindered the field, making evaluation of the mechanisms responsible for these susceptibilities difficult to study. Herein we describe a novel mouse model of burn injury that promotes chronic immune suppression allowing for susceptibility to primary and secondary infections and thus allows for the evaluation of associated mechanisms. METHODS C57Bl/6 mice receiving a full-thickness contact burn were infected with Pseudomonas aeruginosa 14 days (primary infection) and/or 17 days (secondary infection) after burn or sham injury. The survival, pulmonary and systemic bacterial load as well as frequency and function of innate immune cells (neutrophils and macrophages) were evaluated. RESULTS Following secondary infection, burn mice were less effective in clearance of bacteria compared to sham injured or burn mice following a primary infection. Following secondary infection both neutrophils and macrophages recruited to the airways exhibited reduced production of anti-bacterial reactive oxygen and nitrogen species and the pro-inflammatory cytokineIL-12 while macrophages demonstrated increased expression of the anti-inflammatory cytokine interleukin-10 compared to those from sham burned mice and/or burn mice receiving a primary infection. In addition the BALF from these mice contained significantly higher level so of the anti-inflammatory cytokine IL-4 compared to those from sham burned mice and/or burn mice receiving a primary infection. CONCLUSIONS Burn-mediated protection from infection is transient, with a secondary infection inducing immune protection to collapse. Repeated infection leads to increased neutrophil and macrophage numbers in the lungs late after burn injury, with diminished innate immune cell function and an increased anti-inflammatory cytokine environment.
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Affiliation(s)
- Laurel B Kartchner
- Department of Microbiology and Immunology, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Cindy J Gode
- Department of Microbiology and Immunology, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA; Marsico Lung Institute/Cystic Fibrosis Research Center, USA
| | - Julia L M Dunn
- Department of Microbiology and Immunology, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Lindsey I Glenn
- Department of Surgery, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Danté N Duncan
- Department of Microbiology and Immunology, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA; Department of Surgery, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Matthew C Wolfgang
- Department of Microbiology and Immunology, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA; Marsico Lung Institute/Cystic Fibrosis Research Center, USA
| | - Bruce A Cairns
- Department of Microbiology and Immunology, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA; Department of Surgery, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA; Jaycee Burn Center, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Robert Maile
- Department of Microbiology and Immunology, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA; Department of Surgery, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA; Jaycee Burn Center, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA.
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14
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Serum miR-146a and miR-150 as Potential New Biomarkers for Hip Fracture-Induced Acute Lung Injury. Mediators Inflamm 2018; 2018:8101359. [PMID: 30510490 PMCID: PMC6230404 DOI: 10.1155/2018/8101359] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2018] [Revised: 07/19/2018] [Accepted: 07/31/2018] [Indexed: 12/15/2022] Open
Abstract
Background Acute lung injury (ALI) and subsequent pulmonary infection are the most severe and usually fatal complications for elderly hip fracture patients. It is necessary to find some biomarkers for early diagnosis and prognosis of it. Objective This study is aimed at examining the differential expression of miR-146a, miR-150, and cytokines (IL-6 and IL-10) between younger and elderly rats suffering from hip fracture and investigating the possible meaning of them in early diagnosis and prognosis of ALI after hip fracture. Methods and Subjects Elderly rats and younger rats were randomly divided into sham group and fracture group, respectively. Two fracture groups received hip fracture operations. The damage degree of ALI was evaluated by histological observation and pathological score. Cytokines were measured by ELISA; miR-146a and miR-150 were analysed by qRT-PCR. Results After treatment, compared with the corresponding sham groups, the pulmonary histological score, the serum miR-146a concentrations, and the cytokine (IL-6 and IL-10) levels in serum and BALF were significantly higher (the miR-150 were lower) in the fracture groups (with the exception of IL-6 of the younger fracture group at 72 h, all P < 0.05). Meanwhile, compared with the younger fracture group, the aforementioned variables were significantly higher (the miR-150 levels were lower) in the elderly fracture group (with the exception of serum IL-10 and pulmonary histological score at 8 h, all P < 0.05). The results of linear regression analysis showed that serum miR-146a and miR-150 were significantly associated with pulmonary histological score. Conclusion Hip fracture can result in significant systemic inflammation and ALI in the rats. Compared to the younger rats, the elderly rats suffered a more remarkable ALI after hip fracture. It may be related to the abnormal expression of miR-146a and miR-150. Serum miR-146a and miR-150 are potential biomarkers for diagnosis and prognosis of ALI after hip fracture.
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15
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Chen L, Lu Y, Zhao L, Hu L, Qiu Q, Zhang Z, Li M, Hong G, Wu B, Zhao G, Lu Z. Curcumin attenuates sepsis-induced acute organ dysfunction by preventing inflammation and enhancing the suppressive function of Tregs. Int Immunopharmacol 2018; 61:1-7. [PMID: 29778842 DOI: 10.1016/j.intimp.2018.04.041] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2017] [Revised: 04/23/2018] [Accepted: 04/24/2018] [Indexed: 02/06/2023]
Abstract
Sepsis is characterized by the extensive release of cytokines and other mediators. It results in a dysregulated immune response and can lead to organ damage and death. Curcumin has anti-inflammatory properties and immunoregulation functions in various disorders such as sepsis, cancer, rheumatoid arthritis, cardiovascular diseases, lung fibrosis, gallstone formation, and diabetes. This paper investigates the effects of curcumin on immune status and inflammatory response in mice subjected to cecal ligation and puncture (CLP). Inflammatory tissue injury was evaluated by histological observation. Magnetic microbeads were used to isolate splenic CD4+CD25+regulatory T cells (Tregs), and phenotypes were then analyzed by flow cytometry. The levels of Foxp3 were detected by Western blot and real-time PCR and cytokine levels were determined by enzyme-linked immunosorbent assay. We found that the administration of curcumin significantly alleviated inflammatory injury of the lung and kidney in septic mice. The suppressive function of Treg cells was enhanced and the plasma levels of IL-10 increased after treatment with curcumin. Furthermore, the secretion of plasma TNF-α and IL-6 was notably inhibited in septic mice treated with curcumin and administration with curcumin could improve survival after CLP. These data suggest that curcumin could be used as a potential therapeutic agent for sepsis.
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Affiliation(s)
- Longwang Chen
- Emergency Department, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, China; Wenzhou Key Laboratory of Emergency, Critical care, and Disaster Medicine, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, China
| | - Yang Lu
- Department of Rheumatology, Wenzhou People's Hospital, Wenzhou 325000, China
| | - Linjun Zhao
- Emergency Department, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, China; Wenzhou Key Laboratory of Emergency, Critical care, and Disaster Medicine, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, China
| | - Lili Hu
- Central Blood Station of Wenzhou, Wenzhou 325000, China
| | - Qiaomeng Qiu
- Emergency Department, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, China; Wenzhou Key Laboratory of Emergency, Critical care, and Disaster Medicine, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, China
| | - Zhuoling Zhang
- Emergency Department, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, China; Wenzhou Key Laboratory of Emergency, Critical care, and Disaster Medicine, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, China
| | - Mengfang Li
- Emergency Department, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, China; Wenzhou Key Laboratory of Emergency, Critical care, and Disaster Medicine, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, China
| | - Guangliang Hong
- Emergency Department, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, China; Wenzhou Key Laboratory of Emergency, Critical care, and Disaster Medicine, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, China
| | - Bing Wu
- Emergency Department, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, China
| | - Guangju Zhao
- Emergency Department, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, China; Wenzhou Key Laboratory of Emergency, Critical care, and Disaster Medicine, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, China.
| | - Zhongqiu Lu
- Emergency Department, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, China; Wenzhou Key Laboratory of Emergency, Critical care, and Disaster Medicine, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, China; College of Nursing, Wenzhou Medical University, Wenzhou 325000, China.
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16
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Huang B, Lv DJ, Wang C, Shu FP, Gong ZC, Xie T, Yu YZ, Song XL, Xie JJ, Li S, Liu YM, Qi H, Zhao SC. Suppressed epithelial-mesenchymal transition and cancer stem cell properties mediate the anti-cancer effects of ethyl pyruvate via regulation of the AKT/nuclear factor-κB pathway in prostate cancer cells. Oncol Lett 2018; 16:2271-2278. [PMID: 30008929 PMCID: PMC6036506 DOI: 10.3892/ol.2018.8958] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2018] [Accepted: 05/31/2018] [Indexed: 01/05/2023] Open
Abstract
Castration-resistant prostate cancer (CRPC) is a leading cause of mortality among cases of prostate cancer (PCa). Current treatment options for CRPC are limited. Ethyl pyruvate (EP), a lipophilic derivative of pyruvic acid, has been reported to have antitumor activities. In the present study, the efficacy of EP against PCa was investigated using two human PCa cell lines and a mouse xenograft tumor model. PC3 and CWR22RV1 cells were treated with EP, and cytotoxicity was evaluated via Cell Counting Kit-8 and colony formation assays, while cell cycle distribution was assessed by flow cytometry. Changes in cell migration and invasion caused by EP treatment were also evaluated with Transwell and wound healing assays, and changes in the expression of intracellular signaling pathway components were detected by western blotting. EP treatment reduced cell viability, induced G1 arrest, and activated the intrinsic apoptosis pathway. Additionally, the in vivo experiments revealed that EP administration markedly inhibited tumor growth. EP also reversed epithelial-mesenchymal transition and suppressed cancer stem cell properties in part through negative regulation of AKT/nuclear factor-κB signaling. These results indicate that EP has anticancer activity in vitro and in vivo, and is therefore a promising therapeutic agent for the treatment of PCa.
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Affiliation(s)
- Bin Huang
- Department of Urology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
| | - Dao-Jun Lv
- Department of Urology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
| | - Chong Wang
- Department of Urology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
| | - Fang-Peng Shu
- Department of Urology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
| | - Zhi-Cheng Gong
- Department of Urology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
| | - Tao Xie
- Department of Urology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
| | - Yu-Zhong Yu
- Department of Urology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
| | - Xian-Lu Song
- Department of Radiation Oncology, Affiliated Cancer Hospital and Institute of Guangzhou Medical University, Guangzhou, Guangdong 510095, P.R. China
| | - Jia-Jia Xie
- The First School of Clinical Medicine, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
| | - Sen Li
- The First School of Clinical Medicine, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
| | - Ya-Meng Liu
- The First School of Clinical Medicine, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
| | - Huan Qi
- Department of Urology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China.,The First School of Clinical Medicine, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
| | - Shan-Chao Zhao
- Department of Urology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China.,The First School of Clinical Medicine, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
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