1
|
Qian S, Wang X, Chen Y, Zai Q, He Y. Inflammation in Steatotic Liver Diseases: Pathogenesis and Therapeutic Targets. Semin Liver Dis 2024. [PMID: 38838739 DOI: 10.1055/a-2338-9261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/07/2024]
Abstract
Alcohol-related liver disease (ALD) and metabolic dysfunction-associated steatotic liver disease (MASLD), two main types of steatotic liver disease (SLDs), are characterized by a wide spectrum of several different liver disorders, including simple steatosis, steatohepatitis, cirrhosis, and hepatocellular carcinoma. Multiple immune cell-mediated inflammatory responses not only orchestrate the killing and removal of infected/damaged cells but also exacerbate the development of SLDs when excessive or persistent inflammation occurs. In recent years, single-cell and spatial transcriptome analyses have revealed the heterogeneity of liver-infiltrated immune cells in ALD and MASLD, revealing a new immunopathological picture of SLDs. In this review, we will emphasize the roles of several key immune cells in the pathogenesis of ALD and MASLD and discuss inflammation-based approaches for effective SLD intervention. In conclusion, the study of immunological mechanisms, especially highly specific immune cell population functions, may provide novel therapeutic opportunities for this life-threatening disease.
Collapse
Affiliation(s)
- Shengying Qian
- Shanghai Institute of Materia Medica (SIMM), Chinese Academy of Sciences, Shanghai, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Xiaolin Wang
- Department of Infectious Diseases, Shanghai Jiao Tong University School of Medicine, Ruijin Hospital, Shanghai, China
| | - Yingfen Chen
- Shanghai Institute of Materia Medica (SIMM), Chinese Academy of Sciences, Shanghai, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Qiuhong Zai
- Shanghai Institute of Materia Medica (SIMM), Chinese Academy of Sciences, Shanghai, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Yong He
- Shanghai Institute of Materia Medica (SIMM), Chinese Academy of Sciences, Shanghai, China
- University of Chinese Academy of Sciences, Beijing, China
| |
Collapse
|
2
|
You Z, Ling S, Zhao S, Han H, Bian Y, He Y, Chen X. Tissue damage from chronic liver injury inhibits peripheral NK cell abundance and proinflammatory function. J Leukoc Biol 2024; 115:1042-1052. [PMID: 38315633 PMCID: PMC11135618 DOI: 10.1093/jleuko/qiae027] [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: 03/19/2023] [Revised: 01/09/2024] [Accepted: 01/12/2024] [Indexed: 02/07/2024] Open
Abstract
One of the difficulties in the treatment of hepatocellular carcinoma is that it is impossible to eliminate the inhibitory effect of the tumor microenvironment on immune response. Therefore, it is particularly important to understand the formation process of the tumor microenvironment. Chronic inflammation is the core factor of cancer occurrence and the leading stage of inflammation-cancer transformation, and the natural killer cell subsets play an important role in it. Our study confirmed that in the stage of chronic liver injury, the local immunosuppressive microenvironment of the liver (i.e. the damaged microenvironment) has been formed, but this inhibitory effect is only for peripheral natural killer cells and has no effect on tissue-resident natural killer subsets. The markers of damage microenvironment are the same as those of tumor microenvironment.
Collapse
Affiliation(s)
- Zonghao You
- College of Pharmaceutical Engineering of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, P. R. China
| | - Shaoxue Ling
- College of Pharmaceutical Engineering of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, P. R. China
| | - Shuwu Zhao
- School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, P. R. China
| | - Haixing Han
- SINOSH (Tianjin) Group Co., Ltd, Tianjin, P. R. China
| | - Yuhong Bian
- School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, P. R. China
| | - Yongzhi He
- College of Pharmaceutical Engineering of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, P. R. China
| | - Xi Chen
- College of Pharmaceutical Engineering of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, P. R. China
| |
Collapse
|
3
|
Zhang L, Ma Z, Zhang X, Wang J, Tian W, Ren Y, Liu Y, Wang T, Li Y, Liu Y, Shen W, Li T, Liu J, Ma J, Zhang X, Yang S, Wang H. Butyrate alleviates alcoholic liver disease-associated inflammation through macrophage regulation and polarization via the HDAC1/miR-155 axis. Int Immunopharmacol 2024; 131:111852. [PMID: 38492338 DOI: 10.1016/j.intimp.2024.111852] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2023] [Revised: 02/25/2024] [Accepted: 03/10/2024] [Indexed: 03/18/2024]
Abstract
BACKGROUND We recently found that butyrate could ameliorate inflammation of alcoholic liver disease (ALD) in mice. However, the exact mechanism remains incompletely comprehended. Here, we examined the role of butyrate on ALD-associated inflammation through macrophage (Mψ) regulation and polarization using in vivo and in vitro experiments. METHODS For in vivo experiments, C57BL/6J mice were fed modified Lieber-DeCarli liquid diets supplemented with or without ethanol and sodium butyrate (NaB). After 6 weeks of treatment, mice were euthanized and associated indicators were analyzed. For in vitro experiments, lipopolysaccharide (LPS)-induced inflammatory murine RAW264.7 cells were treated with NaB or miR-155 inhibitor/mimic to verify the anti-inflammatory effect and underlying mechanism. RESULTS The administration of NaB alleviated pathological damage and associated inflammation, including LPS, tumor necrosis factor (TNF)-α, interleukin (IL)-6 and IL-1β levels in ALD mice. NaB intervention restored the imbalance of macrophage polarization by inhibiting inducible nitric oxide synthase (iNOS) and elevating arginase-1 (Arg-1). Moreover, NaB reduced histone deacetylase-1 (HDAC1), nuclear factor kappa-B (NF-κB), NOD-like receptor thermal protein domain associated protein 3 (NLRP3), and miR-155 expression in ALD mice, but also increased peroxisome proliferator-activated receptor-γ (PPAR-γ). Thus, MiR-155 was identified as a strong regulator of ALD. To further penetrate the role of miR-155, LPS-stimulated RAW264.7 cells co-cultured with NaB were treated with the specific inhibitor or mimic. Intriguingly, miR-155 was capable of negatively regulated inflammation with NaB intervention by targeting SOCS1, SHIP1, and IRAK-M genes. CONCLUSION Butyrate suppresses the inflammation in mice with ALD by regulating macrophage polarization via the HDAC1/miR-155 axis, which may potentially contribute to the novel therapeutic treatment for the disease.
Collapse
Affiliation(s)
- Lina Zhang
- General Hospital of Ningxia Medical University (the First Clinical Medical College of Ningxia Medical University), Yinchuan 750004 Ningxia, China
| | - Zhiguo Ma
- Yinchuan Hospital of Traditional Chinese Medicine, Yinchuan 750004 Ningxia, China
| | - Xiaoxu Zhang
- General Hospital of Ningxia Medical University (the First Clinical Medical College of Ningxia Medical University), Yinchuan 750004 Ningxia, China
| | - Jing Wang
- General Hospital of Ningxia Medical University (the First Clinical Medical College of Ningxia Medical University), Yinchuan 750004 Ningxia, China
| | - Wenyan Tian
- General Hospital of Ningxia Medical University (the First Clinical Medical College of Ningxia Medical University), Yinchuan 750004 Ningxia, China
| | - Yi Ren
- General Hospital of Ningxia Medical University (the First Clinical Medical College of Ningxia Medical University), Yinchuan 750004 Ningxia, China
| | - Yajuan Liu
- General Hospital of Ningxia Medical University (the First Clinical Medical College of Ningxia Medical University), Yinchuan 750004 Ningxia, China
| | - Ting Wang
- School of Basic Medical Sciences, Ningxia Medical University, Yinchuan 750004 Ningxia, China
| | - Yiwei Li
- School of Basic Medical Sciences, Ningxia Medical University, Yinchuan 750004 Ningxia, China
| | - Yuanyuan Liu
- School of Basic Medical Sciences, Ningxia Medical University, Yinchuan 750004 Ningxia, China
| | - Wenke Shen
- School of Basic Medical Sciences, Ningxia Medical University, Yinchuan 750004 Ningxia, China
| | - Ting Li
- General Hospital of Ningxia Medical University (the First Clinical Medical College of Ningxia Medical University), Yinchuan 750004 Ningxia, China
| | - Jian Liu
- General Hospital of Ningxia Medical University (the First Clinical Medical College of Ningxia Medical University), Yinchuan 750004 Ningxia, China
| | - Junbai Ma
- School of Basic Medical Sciences, Ningxia Medical University, Yinchuan 750004 Ningxia, China
| | - Xiaoxia Zhang
- College of Traditional Chinese Medicine, Ningxia Medical University, Yinchuan 750004 Ningxia, China.
| | - Shaoqi Yang
- General Hospital of Ningxia Medical University (the First Clinical Medical College of Ningxia Medical University), Yinchuan 750004 Ningxia, China.
| | - Hao Wang
- School of Basic Medical Sciences, Ningxia Medical University, Yinchuan 750004 Ningxia, China.
| |
Collapse
|
4
|
Wang H, Ma T, Bao Q, Zhu L, Ying T, Yu Y. Knockdown of protein interacting with C α kinase 1 aggravates sepsis-induced acute liver injury by regulating the TLR4/NF-κB pathway. Sci Rep 2023; 13:11913. [PMID: 37488153 PMCID: PMC10366226 DOI: 10.1038/s41598-023-38852-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Accepted: 07/16/2023] [Indexed: 07/26/2023] Open
Abstract
Acute liver injury (ALI) may manifest at any phase of sepsis, yet an explicit therapeutic approach remains elusive. In this study, LPS and cecum ligation and puncture (CLP) were utilized to establish an inflammatory cell model and a murine model of sepsis-induced liver injury, respectively, aiming to explore the potential protective effect of protein interacting with C α kinase 1 (PICK1) on sepsis-induced ALI and its underlying mechanisms. In both the cell supernatant and the murine whole blood, the concentrations of inflammatory factors were quantified by ELISA, while the protein and mRNA expressions of PICK1, cleaved-PARP-1, caspase1, TLR4, IκBα, and NF-κB were assessed via western blot and qRT-PCR. The outcomes revealed that the knockdown of PICK1 increased the levels of inflammatory factors and apoptosis, alongside activation of TLR4/NF-κB signaling pathway-related factors in both in vivo and in vitro models. Moreover, the murine liver samples were subjected to Hematoxylin-Eosin (HE) staining for assessment of histopathological morphology. The HE staining and liver injury scoring results manifested a markedly exacerbated hepatic damage in PICK1 knockout mice as compared to WT mice following CLP. Furthermore, the liver macrophages were isolated from murine livers, and the expression and activity of the factors associated with the TLR4/NF-κB signaling pathway were verified through RT-qPCR and western blot, and EMSA assay demonstrated an augmented NF-κB activity subsequent to PICK1 knockout. Finally, the expression and localization of PICK1 in macrophages were further scrutinized via immunofluorescence, and the interaction between PICK1 and TLR4 was identified through co-immunoprecipitation. In conclusion, the knockdown of PICK1 appeared to modulate inflammatory factors by activating the TLR4/NF-κB signaling pathway, thereby exacerbating hepatic damage induced by sepsis.
Collapse
Affiliation(s)
- Huijun Wang
- Department of Anesthesia, Taizhou Hospital of Zhejiang Province Affiliated to Wenzhou Medical University, 150, Ximen Street, Linhai City, Taizhou, 317000, Zhejiang, China
| | - Ting Ma
- Department of Anesthesia, The First Affiliated Hospital of Zhejiang Chinese Medical University (Zhejiang Provincial Hospital of Chinese Medicine), Hangzhou, 310000, Zhejiang, China
| | - Qianqian Bao
- Department of Operating Room, Taizhou Hospital of Zhejiang Province Affiliated to Wenzhou Medical University, Taizhou, 317000, Zhejiang, China
| | - Lijun Zhu
- Department of Anesthesia, Taizhou Hospital of Zhejiang Province Affiliated to Wenzhou Medical University, 150, Ximen Street, Linhai City, Taizhou, 317000, Zhejiang, China
| | - Tingting Ying
- Department of Anesthesia, Taizhou Hospital of Zhejiang Province Affiliated to Wenzhou Medical University, 150, Ximen Street, Linhai City, Taizhou, 317000, Zhejiang, China
| | - Yulong Yu
- Department of Anesthesia, Taizhou Hospital of Zhejiang Province Affiliated to Wenzhou Medical University, 150, Ximen Street, Linhai City, Taizhou, 317000, Zhejiang, China.
| |
Collapse
|
5
|
Amin A, Morello M, Petrara MR, Rizzo B, Argenton F, De Rossi A, Giunco S. Short-Term TERT Inhibition Impairs Cellular Proliferation via a Telomere Length-Independent Mechanism and Can Be Exploited as a Potential Anticancer Approach. Cancers (Basel) 2023; 15:2673. [PMID: 37345011 DOI: 10.3390/cancers15102673] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Revised: 04/21/2023] [Accepted: 05/04/2023] [Indexed: 06/23/2023] Open
Abstract
Telomerase reverse transcriptase (TERT), the catalytic component of telomerase, may also contribute to carcinogenesis via telomere-length independent mechanisms. Our previous in vitro and in vivo studies demonstrated that short-term telomerase inhibition by BIBR1532 impairs cell proliferation without affecting telomere length. Here, we show that the impaired cell cycle progression following short-term TERT inhibition by BIBR1532 in in vitro models of B-cell lymphoproliferative disorders, i.e., Epstein-Barr virus (EBV)-immortalized lymphoblastoid cell lines (LCLs), and B-cell malignancies, i.e., Burkitt's lymphoma (BL) cell lines, is characterized by a significant reduction in NF-κB p65 nuclear levels leading to the downregulation of its target gene MYC. MYC downregulation was associated with increased expression and nuclear localization of P21, thus promoting its cell cycle inhibitory function. Consistently, treatment with BIBR1532 in wild-type zebrafish embryos significantly decreased Myc and increased p21 expression. The combination of BIBR1532 with antineoplastic drugs (cyclophosphamide or fludarabine) significantly reduced xenografted cells' proliferation rate compared to monotherapy in the zebrafish xenograft model. Overall, these findings indicate that short-term inhibition of TERT impairs cell growth through the downregulation of MYC via NF-κB signalling and supports the use of TERT inhibitors in combination with antineoplastic drugs as an efficient anticancer strategy.
Collapse
Affiliation(s)
- Aamir Amin
- Department of Surgery, Oncology and Gastroenterology, Section of Oncology and Immunology, University of Padova, 35128 Padova, Italy
| | - Marzia Morello
- Immunology and Diagnostic Molecular Oncology Unit, Veneto Institute of Oncology IOV-IRCCS, 35128 Padova, Italy
| | - Maria Raffaella Petrara
- Department of Surgery, Oncology and Gastroenterology, Section of Oncology and Immunology, University of Padova, 35128 Padova, Italy
| | - Beatrice Rizzo
- Immunology and Diagnostic Molecular Oncology Unit, Veneto Institute of Oncology IOV-IRCCS, 35128 Padova, Italy
| | | | - Anita De Rossi
- Department of Surgery, Oncology and Gastroenterology, Section of Oncology and Immunology, University of Padova, 35128 Padova, Italy
- Immunology and Diagnostic Molecular Oncology Unit, Veneto Institute of Oncology IOV-IRCCS, 35128 Padova, Italy
| | - Silvia Giunco
- Department of Surgery, Oncology and Gastroenterology, Section of Oncology and Immunology, University of Padova, 35128 Padova, Italy
- Immunology and Diagnostic Molecular Oncology Unit, Veneto Institute of Oncology IOV-IRCCS, 35128 Padova, Italy
| |
Collapse
|
6
|
Vitamin D as a Shield against Aging. Int J Mol Sci 2023; 24:ijms24054546. [PMID: 36901976 PMCID: PMC10002864 DOI: 10.3390/ijms24054546] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 02/17/2023] [Accepted: 02/22/2023] [Indexed: 03/02/2023] Open
Abstract
Aging can be seen as a physiological progression of biomolecular damage and the accumulation of defective cellular components, which trigger and amplify the process, toward whole-body function weakening. Senescence initiates at the cellular level and consists in an inability to maintain homeostasis, characterized by the overexpression/aberrant expression of inflammatory/immune/stress responses. Aging is associated with significant modifications in immune system cells, toward a decline in immunosurveillance, which, in turn, leads to chronic elevation of inflammation/oxidative stress, increasing the risk of (co)morbidities. Albeit aging is a natural and unavoidable process, it can be regulated by some factors, like lifestyle and diet. Nutrition, indeed, tackles the mechanisms underlying molecular/cellular aging. Many micronutrients, i.e., vitamins and elements, can impact cell function. This review focuses on the role exerted by vitamin D in geroprotection, based on its ability to shape cellular/intracellular processes and drive the immune response toward immune protection against infections and age-related diseases. To this aim, the main biomolecular paths underlying immunosenescence and inflammaging are identified as biotargets of vitamin D. Topics such as heart and skeletal muscle cell function/dysfunction, depending on vitamin D status, are addressed, with comments on hypovitaminosis D correction by food and supplementation. Albeit research has progressed, still limitations exist in translating knowledge into clinical practice, making it necessary to focus attention on the role of vitamin D in aging, especially considering the growing number of older individuals.
Collapse
|
7
|
Zhang N, Yao H, Zhang Z, Li Z, Chen X, Zhao Y, Ju R, He J, Pan H, Liu X, Lv Y. Ongoing involvers and promising therapeutic targets of hepatic fibrosis: The hepatic immune microenvironment. Front Immunol 2023; 14:1131588. [PMID: 36875101 PMCID: PMC9978172 DOI: 10.3389/fimmu.2023.1131588] [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] [Received: 12/25/2022] [Accepted: 02/02/2023] [Indexed: 02/18/2023] Open
Abstract
Hepatic fibrosis is often secondary to chronic inflammatory liver injury. During the development of hepatic fibrosis, the damaged hepatocytes and activated hepatic stellate cells (HSCs) caused by the pathogenic injury could secrete a variety of cytokines and chemokines, which will chemotactic innate and adaptive immune cells of liver tissue and peripheral circulation infiltrating into the injury site, mediating the immune response against injury and promoting tissue reparation. However, the continuous release of persistent injurious stimulus-induced inflammatory cytokines will promote HSCs-mediated fibrous tissue hyperproliferation and excessive repair, which will cause hepatic fibrosis development and progression to cirrhosis even liver cancer. And the activated HSCs can secrete various cytokines and chemokines, which directly interact with immune cells and actively participate in liver disease progression. Therefore, analyzing the changes in local immune homeostasis caused by immune response under different pathological states will greatly enrich our understanding of liver diseases' reversal, chronicity, progression, and even deterioration of liver cancer. In this review, we summarized the critical components of the hepatic immune microenvironment (HIME), different sub-type immune cells, and their released cytokines, according to their effect on the development of progression of hepatic fibrosis. And we also reviewed and analyzed the specific changes and the related mechanisms of the immune microenvironment in different chronic liver diseases.Moreover, we retrospectively analyzed whether the progression of hepatic fibrosis could be alleviated by modulating the HIME.We aimed to elucidate the pathogenesis of hepatic fibrosis and provide the possibility for exploring the therapeutic targets for hepatic fibrosis.
Collapse
Affiliation(s)
- Nana Zhang
- Institute of Regenerative and Reconstructive Medicine, Med-X Institute, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China.,National Local Joint Engineering Research Center for Precision Surgery and Regenerative Medicine, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China.,Shaanxi Provincial Center for Regenerative Medicine and Surgical Engineering, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Huimin Yao
- Institute of Regenerative and Reconstructive Medicine, Med-X Institute, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China.,National Local Joint Engineering Research Center for Precision Surgery and Regenerative Medicine, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China.,Shaanxi Provincial Center for Regenerative Medicine and Surgical Engineering, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Zhixuan Zhang
- Institute of Regenerative and Reconstructive Medicine, Med-X Institute, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China.,National Local Joint Engineering Research Center for Precision Surgery and Regenerative Medicine, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China.,Shaanxi Provincial Center for Regenerative Medicine and Surgical Engineering, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Zhuoqun Li
- National Local Joint Engineering Research Center for Precision Surgery and Regenerative Medicine, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China.,Shaanxi Provincial Center for Regenerative Medicine and Surgical Engineering, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China.,Department of Hepatobiliary Surgery, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Xue Chen
- National Local Joint Engineering Research Center for Precision Surgery and Regenerative Medicine, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China.,Shaanxi Provincial Center for Regenerative Medicine and Surgical Engineering, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Yan Zhao
- Institute of Regenerative and Reconstructive Medicine, Med-X Institute, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China.,National Local Joint Engineering Research Center for Precision Surgery and Regenerative Medicine, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China.,Shaanxi Provincial Center for Regenerative Medicine and Surgical Engineering, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Ran Ju
- Institute of Regenerative and Reconstructive Medicine, Med-X Institute, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China.,National Local Joint Engineering Research Center for Precision Surgery and Regenerative Medicine, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China.,Shaanxi Provincial Center for Regenerative Medicine and Surgical Engineering, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Jiayi He
- Institute of Regenerative and Reconstructive Medicine, Med-X Institute, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China.,National Local Joint Engineering Research Center for Precision Surgery and Regenerative Medicine, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China.,Shaanxi Provincial Center for Regenerative Medicine and Surgical Engineering, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Heli Pan
- Institute of Regenerative and Reconstructive Medicine, Med-X Institute, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China.,National Local Joint Engineering Research Center for Precision Surgery and Regenerative Medicine, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China.,Shaanxi Provincial Center for Regenerative Medicine and Surgical Engineering, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Xiaoli Liu
- Institute of Regenerative and Reconstructive Medicine, Med-X Institute, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China.,National Local Joint Engineering Research Center for Precision Surgery and Regenerative Medicine, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China.,Shaanxi Provincial Center for Regenerative Medicine and Surgical Engineering, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Yi Lv
- Institute of Regenerative and Reconstructive Medicine, Med-X Institute, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China.,National Local Joint Engineering Research Center for Precision Surgery and Regenerative Medicine, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China.,Shaanxi Provincial Center for Regenerative Medicine and Surgical Engineering, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China.,Department of Hepatobiliary Surgery, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| |
Collapse
|
8
|
González-Giraldo Y, Fonseca ÁYG, Aristizabal-Pachon A. TERT silencing alters the expression of ARG1, GLUL, VIM, NES genes and hsa-miR-29b-3p in the T98G cell line. NUCLEOSIDES, NUCLEOTIDES & NUCLEIC ACIDS 2022; 42:464-477. [PMID: 36533634 DOI: 10.1080/15257770.2022.2155301] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The central function of telomerase is maintaining the telomere length. However, several extra-telomeric roles have been identified for this protein complex. In this study, we evaluated the effect of the silencing of the catalytic subunit of telomerase (TERT) on the expression of candidate microRNAs, cell activation markers and glial-related genes in a glioblastoma cell line (T98G). The silencing was performed by a siRNA and the qPCR method was used to analyze the expression of TERT and downstream genes. Flow cytometry was used to quantify the TERT protein, and bioinformatics analysis was carried out to analyze the functions of microRNA target genes. Here, it was observed that after a 50% reduction of the TERT gene, the expression of ARG1 (Arginase 1) was upregulated, whereas NES (Nestin), GLUL (Glutamate-Ammonia Ligase), VIM (Vimentin) and the hsa-miR-29b-3p microRNA were downregulated (P-value <0.05). A bioinformatic analysis showed that target genes of hsa-miR-29b are associated with focal adhesion, the PI3K-Akt signaling pathway, among others. These results are important because they contribute to the knowledge of extratelomeric functions by providing relevant evidence about novel genes modulated by TERT.
Collapse
Affiliation(s)
- Yeimy González-Giraldo
- Departamento de Nutrición y Bioquímica, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá, Colombia
- School of Medicine, Universidad Antonio Nariño, Bogotá, Colombia
| | - Ángela Y. García Fonseca
- Departamento de Nutrición y Bioquímica, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá, Colombia
| | - Andrés Aristizabal-Pachon
- Departamento de Nutrición y Bioquímica, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá, Colombia
| |
Collapse
|
9
|
Cisneros B, García-Aguirre I, Unzueta J, Arrieta-Cruz I, González-Morales O, Domínguez-Larrieta JM, Tamez-González A, Leyva-Gómez G, Magaña JJ. Immune system modulation in aging: Molecular mechanisms and therapeutic targets. Front Immunol 2022; 13:1059173. [PMID: 36591275 PMCID: PMC9797513 DOI: 10.3389/fimmu.2022.1059173] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2022] [Accepted: 11/28/2022] [Indexed: 12/23/2022] Open
Abstract
The function of the immune system declines during aging, compromising its response against pathogens, a phenomenon termed as "immunosenescence." Alterations of the immune system undergone by aged individuals include thymic involution, defective memory T cells, impaired activation of naïve T cells, and weak memory response. Age-linked alterations of the innate immunity comprise perturbed chemotactic, phagocytic, and natural killing functions, as well as impaired antigen presentation. Overall, these alterations result in chronic low-grade inflammation (inflammaging) that negatively impacts health of elderly people. In this review, we address the most relevant molecules and mechanisms that regulate the relationship between immunosenescence and inflammaging and provide an updated description of the therapeutic strategies aimed to improve immunity in aged individuals.
Collapse
Affiliation(s)
- Bulmaro Cisneros
- Departamento de Genética y Biología Molecular, Centro de Investigación y de Estudios Avanzados, Instituto Politécnico Nacional, Ciudad de México, Mexico
| | - Ian García-Aguirre
- Departamento de Genética y Biología Molecular, Centro de Investigación y de Estudios Avanzados, Instituto Politécnico Nacional, Ciudad de México, Mexico,Departamento de Bioingeniería, Escuela de Ingeniería y Ciencias, Tecnologico de Monterrey, Ciudad de México, Mexico
| | - Juan Unzueta
- Departamento de Genética y Biología Molecular, Centro de Investigación y de Estudios Avanzados, Instituto Politécnico Nacional, Ciudad de México, Mexico
| | - Isabel Arrieta-Cruz
- Departamento de Investigación Básica, División de Investigación, Instituto Nacional de Geriatría, Secretaría de Salud, Ciudad de México, Mexico
| | - Oscar González-Morales
- Departamento de Bioingeniería, Escuela de Ingeniería y Ciencias, Tecnologico de Monterrey, Jalisco, Mexico
| | - Juan M. Domínguez-Larrieta
- Departamento de Bioingeniería, Escuela de Ingeniería y Ciencias, Tecnologico de Monterrey, Nuevo León, Mexico
| | - Aura Tamez-González
- Departamento de Bioingeniería, Escuela de Ingeniería y Ciencias, Tecnologico de Monterrey, Ciudad de México, Mexico
| | - Gerardo Leyva-Gómez
- Departamento de Farmacia, Facultad de Química, Universidad Nacional Autónoma de México, Ciudad de México, Mexico,*Correspondence: Gerardo Leyva-Gómez, ; Jonathan J. Magaña,
| | - Jonathan J. Magaña
- Departamento de Bioingeniería, Escuela de Ingeniería y Ciencias, Tecnologico de Monterrey, Ciudad de México, Mexico,Laboratorio de Medicina Genómica, Departamento de Genética, Instituto Nacional de Rehabilitación “Luis Guillermo Ibarra Ibarra”, Secretaría de Salud, Ciudad de México, Mexico,*Correspondence: Gerardo Leyva-Gómez, ; Jonathan J. Magaña,
| |
Collapse
|
10
|
Niu XN, Zhang YL, Cheng M, Yin NN, Wu YY, Shi W, Yang YL, Zhu L, Huang C, Li J. 7-O-(2- (Propylamino)-2-oxoethyl) hesperetin attenuates inflammation and protects against alcoholic liver injury by NLRP12. Int Immunopharmacol 2022; 110:109006. [DOI: 10.1016/j.intimp.2022.109006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Revised: 06/19/2022] [Accepted: 06/24/2022] [Indexed: 12/01/2022]
|
11
|
Zanotti S, Boot GF, Coto-Llerena M, Gallon J, Hess GF, Soysal SD, Kollmar O, Ng CKY, Piscuoglio S. The Role of Chronic Liver Diseases in the Emergence and Recurrence of Hepatocellular Carcinoma: An Omics Perspective. Front Med (Lausanne) 2022; 9:888850. [PMID: 35814741 PMCID: PMC9263082 DOI: 10.3389/fmed.2022.888850] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Accepted: 05/23/2022] [Indexed: 12/02/2022] Open
Abstract
Hepatocellular carcinoma (HCC) typically develops from a background of cirrhosis resulting from chronic inflammation. This inflammation is frequently associated with chronic liver diseases (CLD). The advent of next generation sequencing has enabled extensive analyses of molecular aberrations in HCC. However, less attention has been directed to the chronically inflamed background of the liver, prior to HCC emergence and during recurrence following surgery. Hepatocytes within chronically inflamed liver tissues present highly activated inflammatory signaling pathways and accumulation of a complex mutational landscape. In this altered environment, cells may transform in a stepwise manner toward tumorigenesis. Similarly, the chronically inflamed environment which persists after resection may impact the timing of HCC recurrence. Advances in research are allowing an extensive epigenomic, transcriptomic and proteomic characterization of CLD which define the emergence of HCC or its recurrence. The amount of data generated will enable the understanding of oncogenic mechanisms in HCC from the CLD perspective and provide the possibility to identify robust biomarkers or novel therapeutic targets for the treatment of primary and recurrent HCC. Importantly, biomarkers defined by the analysis of CLD tissue may permit the early detection or prevention of HCC emergence and recurrence. In this review, we compile the current omics based evidence of the contribution of CLD tissues to the emergence and recurrence of HCC.
Collapse
Affiliation(s)
- Sofia Zanotti
- Anatomic Pathology Unit, IRCCS Humanitas University Research Hospital, Milan, Italy
| | - Gina F. Boot
- Visceral Surgery and Precision Medicine Research Laboratory, Department of Biomedicine, University of Basel, Basel, Switzerland
| | - Mairene Coto-Llerena
- Visceral Surgery and Precision Medicine Research Laboratory, Department of Biomedicine, University of Basel, Basel, Switzerland
- Institute of Medical Genetics and Pathology, University Hospital Basel, Basel, Switzerland
| | - John Gallon
- Visceral Surgery and Precision Medicine Research Laboratory, Department of Biomedicine, University of Basel, Basel, Switzerland
| | - Gabriel F. Hess
- Clarunis, University Center for Gastrointestinal and Liver Diseases, St. Clara Hospital and University Hospital Basel, Basel, Switzerland
| | - Savas D. Soysal
- Clarunis, University Center for Gastrointestinal and Liver Diseases, St. Clara Hospital and University Hospital Basel, Basel, Switzerland
| | - Otto Kollmar
- Clarunis, University Center for Gastrointestinal and Liver Diseases, St. Clara Hospital and University Hospital Basel, Basel, Switzerland
| | - Charlotte K. Y. Ng
- Department for BioMedical Research, University of Bern, Bern, Switzerland
- Swiss Institute of Bioinformatics, Lausanne, Switzerland
- Bern Center for Precision Medicine, Bern, Switzerland
| | - Salvatore Piscuoglio
- Visceral Surgery and Precision Medicine Research Laboratory, Department of Biomedicine, University of Basel, Basel, Switzerland
- Institute of Medical Genetics and Pathology, University Hospital Basel, Basel, Switzerland
- *Correspondence: Salvatore Piscuoglio
| |
Collapse
|
12
|
Wang C, Ma C, Gong L, Guo Y, Fu K, Zhang Y, Zhou H, Li Y. Macrophage Polarization and Its Role in Liver Disease. Front Immunol 2022; 12:803037. [PMID: 34970275 PMCID: PMC8712501 DOI: 10.3389/fimmu.2021.803037] [Citation(s) in RCA: 197] [Impact Index Per Article: 98.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Accepted: 11/29/2021] [Indexed: 12/12/2022] Open
Abstract
Macrophages are important immune cells in innate immunity, and have remarkable heterogeneity and polarization. Under pathological conditions, in addition to the resident macrophages, other macrophages are also recruited to the diseased tissues, and polarize to various phenotypes (mainly M1 and M2) under the stimulation of various factors in the microenvironment, thus playing different roles and functions. Liver diseases are hepatic pathological changes caused by a variety of pathogenic factors (viruses, alcohol, drugs, etc.), including acute liver injury, viral hepatitis, alcoholic liver disease, metabolic-associated fatty liver disease, liver fibrosis, and hepatocellular carcinoma. Recent studies have shown that macrophage polarization plays an important role in the initiation and development of liver diseases. However, because both macrophage polarization and the pathogenesis of liver diseases are complex, the role and mechanism of macrophage polarization in liver diseases need to be further clarified. Therefore, the origin of hepatic macrophages, and the phenotypes and mechanisms of macrophage polarization are reviewed first in this paper. It is found that macrophage polarization involves several molecular mechanisms, mainly including TLR4/NF-κB, JAK/STATs, TGF-β/Smads, PPARγ, Notch, and miRNA signaling pathways. In addition, this paper also expounds the role and mechanism of macrophage polarization in various liver diseases, which aims to provide references for further research of macrophage polarization in liver diseases, contributing to the therapeutic strategy of ameliorating liver diseases by modulating macrophage polarization.
Collapse
Affiliation(s)
- Cheng Wang
- State Key Laboratory of Southwestern Chinese Medicine Resources, Key Laboratory of Standardization for Chinese Herbal Medicine, Ministry of Education, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Cheng Ma
- State Key Laboratory of Southwestern Chinese Medicine Resources, Key Laboratory of Standardization for Chinese Herbal Medicine, Ministry of Education, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Lihong Gong
- State Key Laboratory of Southwestern Chinese Medicine Resources, Key Laboratory of Standardization for Chinese Herbal Medicine, Ministry of Education, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Yuqin Guo
- State Key Laboratory of Southwestern Chinese Medicine Resources, Key Laboratory of Standardization for Chinese Herbal Medicine, Ministry of Education, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Ke Fu
- State Key Laboratory of Southwestern Chinese Medicine Resources, Key Laboratory of Standardization for Chinese Herbal Medicine, Ministry of Education, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Yafang Zhang
- State Key Laboratory of Southwestern Chinese Medicine Resources, Key Laboratory of Standardization for Chinese Herbal Medicine, Ministry of Education, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Honglin Zhou
- State Key Laboratory of Southwestern Chinese Medicine Resources, Key Laboratory of Standardization for Chinese Herbal Medicine, Ministry of Education, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Yunxia Li
- State Key Laboratory of Southwestern Chinese Medicine Resources, Key Laboratory of Standardization for Chinese Herbal Medicine, Ministry of Education, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| |
Collapse
|
13
|
Li J, Chen XM, Zhou CZ, Fang WW, Lv WF, Cheng DL. Novel roles of lipopolysaccharide and TLR4/NF-κB signaling pathway in inflammatory response to liver injury in Budd-Chiari syndrome. World J Gastrointest Surg 2021; 13:1448-1462. [PMID: 34950433 PMCID: PMC8649562 DOI: 10.4240/wjgs.v13.i11.1448] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/13/2021] [Revised: 08/19/2021] [Accepted: 10/31/2021] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Budd-Chiari syndrome (BCS) is an uncommon disorder characterized by obstruction of hepatic venous outflow. To date, the exact mechanism underlying hepatic injury derived from the hepatic venous outflow obstruction in BCS remains largely unknown.
AIM To assess the role of NF-κB-mediated inflammation in BCS-induced liver injury in humans and rats.
METHODS A total of 180 rats were randomly assigned into nine groups, including four BCS model groups (1, 3, 6 and 12 wk), four sham-operated groups (1, 3, 6 and 12 wk), and a control group. Lipopolysaccharide (LPS) levels in each group were detected by the Tachypleus Amebocyte Lysate assay. The mRNA and protein levels of TLR4, NF-κB, tumor necrosis factor (TNF)-α, interleukin (IL)-2 and interferon (IFN)-γ were quantified. In addition, 60 patients with BCS and 30 healthy controls were enrolled, and their blood samples were analyzed.
RESULTS Hepatic and plasma LPS levels were significantly increased in rats. The mRNA and protein expression levels of TLR4, NF-κB and inflammatory cytokines (TNF-α, IL-2 and IFN-γ) in liver tissues were significantly higher in the BCS model groups compared with the other two groups. In addition, the model groups (1, 3, 6 and 12 wk after BCS induction) showed significant differences in the levels of LPS, TLR4, NF-κB, TNF-α, IL-2 and IFN-γ. Notably, there was a significant correlation between the LPS concentrations and mRNA and protein levels of TLR4, NF-κB and inflammatory cytokines. Importantly, it was revealed that the levels of LPS, TLR4, NF-κB and inflammatory cytokines were significantly greater in chronic BCS patients than healthy controls and acute BCS patients.
CONCLUSION LPS level is markedly elevated in BCS, in turn activating the TLR4/NF-κB signaling pathway, leading to induction of inflammatory cytokines (TNF-α, IL-2 and IFN-γ) in response to BCS-induced liver injury.
Collapse
Affiliation(s)
- Jie Li
- Department of Interventional Radiology, The First Affiliated Hospital of University of Science and Technology of China, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230001, Anhui Province, China
| | - Xiao-Ming Chen
- Department of Gastroenterology, The Second Hospital of Anhui Medical University, Hefei 230000, Anhui Province, China
| | - Chun-Ze Zhou
- Department of Interventional Radiology, The First Affiliated Hospital of University of Science and Technology of China, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230001, Anhui Province, China
| | - Wei-Wei Fang
- Department of Radiology, The Third People’s Hospital of Hefei, Hefei 230022, Anhui Province, China
| | - Wei-Fu Lv
- Department of Interventional Radiology, The First Affiliated Hospital of University of Science and Technology of China, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230001, Anhui Province, China
| | - De-Lei Cheng
- Department of Interventional Radiology, The First Affiliated Hospital of University of Science and Technology of China, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230001, Anhui Province, China
| |
Collapse
|
14
|
Role of NF-κB in Ageing and Age-Related Diseases: Lessons from Genetically Modified Mouse Models. Cells 2021; 10:cells10081906. [PMID: 34440675 PMCID: PMC8394846 DOI: 10.3390/cells10081906] [Citation(s) in RCA: 50] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 07/17/2021] [Accepted: 07/23/2021] [Indexed: 12/21/2022] Open
Abstract
Ageing is a complex process, induced by multifaceted interaction of genetic, epigenetic, and environmental factors. It is manifested by a decline in the physiological functions of organisms and associated to the development of age-related chronic diseases and cancer development. It is considered that ageing follows a strictly-regulated program, in which some signaling pathways critically contribute to the establishment and maintenance of the aged state. Chronic inflammation is a major mechanism that promotes the biological ageing process and comorbidity, with the transcription factor NF-κB (nuclear factor kappa-light-chain-enhancer of activated B cells) as a crucial mediator of inflammatory responses. This, together with the finding that the activation or inhibition of NF-κB can induce or reverse respectively the main features of aged organisms, has brought it under consideration as a key transcription factor that acts as a driver of ageing. In this review, we focused on the data obtained entirely through the generation of knockout and transgenic mouse models of either protein involved in the NF-κB signaling pathway that have provided relevant information about the intricate processes or molecular mechanisms that control ageing. We have reviewed the relationship of NF-κB and premature ageing; the development of cancer associated with ageing and the implication of NF-κB activation in the development of age-related diseases, some of which greatly increase the risk of developing cancer.
Collapse
|
15
|
Robinson NJ, Miyagi M, Scarborough JA, Scott JG, Taylor DJ, Schiemann WP. SLX4IP promotes RAP1 SUMOylation by PIAS1 to coordinate telomere maintenance through NF-κB and Notch signaling. Sci Signal 2021; 14:eabe9613. [PMID: 34187905 PMCID: PMC8353884 DOI: 10.1126/scisignal.abe9613] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The maintenance of telomere length supports repetitive cell division and therefore plays a central role in cancer development and progression. Telomeres are extended by either the enzyme telomerase or the alternative lengthening of telomeres (ALT) pathway. Here, we found that the telomere-associated protein SLX4IP dictates telomere proteome composition by recruiting and activating the E3 SUMO ligase PIAS1 to the SLX4 complex. PIAS1 SUMOylated the telomere-binding protein RAP1, which disrupted its interaction with the telomere-binding protein TRF2 and facilitated its nucleocytoplasmic shuttling. In the cytosol, RAP1 bound to IκB kinase (IKK), resulting in activation of the transcription factor NF-κB and its induction of Jagged-1 expression, which promoted Notch signaling and the institution of ALT. This axis could be targeted therapeutically in ALT-driven cancers and in tumor cells that develop resistance to antitelomerase therapies. Our results illuminate the mechanisms underlying SLX4IP-dependent telomere plasticity and demonstrate the role of telomere proteins in directly coordinating intracellular signaling and telomere maintenance dynamics.
Collapse
Affiliation(s)
- Nathaniel J Robinson
- Department of Pathology, Case Western Reserve University School of Medicine, Cleveland, OH 44106, USA
| | - Masaru Miyagi
- Department of Pharmacology, Case Western Reserve University School of Medicine, Cleveland, OH 44106, USA
| | - Jessica A Scarborough
- Department of Translational Hematology and Oncology Research, Cleveland Clinic, Cleveland, OH 44195, USA
| | - Jacob G Scott
- Department of Translational Hematology and Oncology Research, Cleveland Clinic, Cleveland, OH 44195, USA
| | - Derek J Taylor
- Department of Pharmacology, Case Western Reserve University School of Medicine, Cleveland, OH 44106, USA
| | - William P Schiemann
- Case Comprehensive Cancer Center, Case Western Reserve University, Cleveland, OH 44106, USA.
| |
Collapse
|
16
|
Duraisamy P, Ravi S, Krishnan M, Livya CM, Manikandan B, Arunagirinathan K, Ramar M. Dynamic Role of Macrophage Sub Types for Development of Atherosclerosis and Potential Use of Herbal Immunomodulators as Imminent Therapeutic Strategy. Cardiovasc Hematol Agents Med Chem 2020; 20:2-12. [PMID: 33334298 DOI: 10.2174/1871525718666201217163207] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2020] [Revised: 10/20/2020] [Accepted: 10/27/2020] [Indexed: 11/22/2022]
Abstract
Atherosclerosis, a major contributor to cardiovascular disease is a global alarm causing mortality worldwide. Being a progressive disease in the arteries, it mainly causes recruitment of monocytes to the inflammatory sites and subside pathological conditions. Monocyte-derived macrophage mainly acts in foam cell formation by engorging the LDL molecules, oxidizes it into Ox-LDL and leads to plaque deposit development. Macrophages in general differentiate, proliferate and undergo apoptosis at the inflammatory site. Frequently two subtypes of macrophages M1 and M2 has to act crucially in balancing the micro-environmental conditions of endothelial cells in arteries. The productions of proinflammatory mediators like IL-1, IL-6, TNF-α by M1 macrophage has atherogenic properties majorly produced during the early progression of atherosclerotic plaques. To counteract cytokine productions and M1-M2 balance, secondary metabolites (phytochemicals) from plants act as a therapeutic agent in alleviating atherosclerosis progression. This review summarizes the fundamental role of the macrophage in atherosclerotic lesion formation along with its plasticity characteristic as well as recent therapeutic strategies using herbal components and anti-inflammatory cytokines as potential immunomodulators.
Collapse
Affiliation(s)
| | - Sangeetha Ravi
- Department of Zoology, University of Madras, Guindy Campus, Chennai - 600 025. India
| | - Mahalakshmi Krishnan
- Department of Zoology, University of Madras, Guindy Campus, Chennai - 600 025. India
| | - Catherene M Livya
- Department of Zoology, University of Madras, Guindy Campus, Chennai - 600 025. India
| | - Beulaja Manikandan
- Department of Biochemistry, Annai Veilankanni's College for Women, Chennai - 600 015. India
| | | | - Manikandan Ramar
- Department of Zoology, University of Madras, Guindy Campus, Chennai - 600 025. India
| |
Collapse
|
17
|
Nowak AJ, Relja B. The Impact of Acute or Chronic Alcohol Intake on the NF-κB Signaling Pathway in Alcohol-Related Liver Disease. Int J Mol Sci 2020; 21:E9407. [PMID: 33321885 PMCID: PMC7764163 DOI: 10.3390/ijms21249407] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Revised: 12/07/2020] [Accepted: 12/08/2020] [Indexed: 02/06/2023] Open
Abstract
Ethanol misuse is frequently associated with a multitude of profound medical conditions, contributing to health-, individual- and social-related damage. A particularly dangerous threat from this classification is coined as alcoholic liver disease (ALD), a liver condition caused by prolonged alcohol overconsumption, involving several pathological stages induced by alcohol metabolic byproducts and sustained cellular intoxication. Molecular, pathological mechanisms of ALD principally root in the innate immunity system and are especially associated with enhanced functionality of the nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB) pathway. NF-κB is an interesting and convoluted DNA transcription regulator, promoting both anti-inflammatory and pro-inflammatory gene expression. Thus, the abundancy of studies in recent years underlines the importance of NF-κB in inflammatory responses and the mechanistic stimulation of inner molecular motifs within the factor components. Hereby, in the following review, we would like to put emphasis on the correlation between the NF-κB inflammation signaling pathway and ALD progression. We will provide the reader with the current knowledge regarding the chronic and acute alcohol consumption patterns, the molecular mechanisms of ALD development, the involvement of the NF-κB pathway and its enzymatic regulators. Therefore, we review various experimental in vitro and in vivo studies regarding the research on ALD, including the recent active compound treatments and the genetic modification approach. Furthermore, our investigation covers a few human studies.
Collapse
Affiliation(s)
- Aleksander J. Nowak
- Experimental Radiology, University Clinic for Radiology and Nuclear Medicine, Leipziger Strasse 44, 39120 Magdeburg, Germany;
- Medical Faculty, Otto-von-Guericke-University Magdeburg, Leipziger Strasse 44, 39120 Magdeburg, Germany
| | - Borna Relja
- Experimental Radiology, University Clinic for Radiology and Nuclear Medicine, Leipziger Strasse 44, 39120 Magdeburg, Germany;
- Medical Faculty, Otto-von-Guericke-University Magdeburg, Leipziger Strasse 44, 39120 Magdeburg, Germany
| |
Collapse
|
18
|
Wan YM, Li ZQ, Liu C, He YF, Wang MJ, Wu XN, Zhang Y, Li YH. Mesenchymal stem cells reduce alcoholic hepatitis in mice via suppression of hepatic neutrophil and macrophage infiltration, and of oxidative stress. PLoS One 2020; 15:e0228889. [PMID: 32045450 PMCID: PMC7012433 DOI: 10.1371/journal.pone.0228889] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2019] [Accepted: 01/24/2020] [Indexed: 12/15/2022] Open
Abstract
Mesenchymal stem cells (MSCs) are a population of pluripotent cells that have been tested for the treatment of many inflammatory diseases. It remains unclear whether MSCs were effective in treating mice with alcoholic hepatitis (AH) and its underlying mechanism. In the present study, MSCs were isolated from bone marrow of 4-6 week-old C57BL/6N male mice. AH was induced in female mice by chronic-binge ethanol feeding for 10 days. Intraperitoneal (i.p.) transplantation of MSCs or saline were performed in mice on day 10. Blood samples and hepatic tissues were harvested on day 11. Biochemical, liver histological and flow cytometric analyses were performed. Compared to the control mice, the AH mice had significantly increased liver/body weight ratio, serum alanine aminotransferase (ALT) and aspartate aminotransferases (AST), hepatic total cholesterol (TC), triglyceride (TG), malondialdehyde (MDA), hepatic neutrophil and macrophage infiltration (P<0.001), which were markedly reduced by i.p. transplantation of MSCs (P<0.01). Compared to the control mice, the hepatic glutathione (GSH) was prominently lower in the AH mice (P<0.001), which was markedly enhanced after i.p. injection of MSCs (P<0.001). MSCs were effective for the treatment of AH mice, which might be associated with their ability in inhibiting hepatic neutrophil and macrophage infiltration, and alleviating oxidative stress.
Collapse
Affiliation(s)
- Yue-Meng Wan
- Public Health Institute of Kunming Medical University, Kunming, Yunnan province, China
- Gastroenterology Department, The 2 Affiliated Hospital of Kunming Medical University, Kunming, Yunnan Province, China
| | - Zhi-qiang Li
- Gastroenterology Department, The 2 Affiliated Hospital of Kunming Medical University, Kunming, Yunnan Province, China
| | - Chang Liu
- Gastroenterology Department, The 2 Affiliated Hospital of Kunming Medical University, Kunming, Yunnan Province, China
| | - Yue-Feng He
- Gastroenterology Department, The 2 Affiliated Hospital of Kunming Medical University, Kunming, Yunnan Province, China
| | - Men-Jie Wang
- Gastroenterology Department, The 2 Affiliated Hospital of Kunming Medical University, Kunming, Yunnan Province, China
| | - Xi-Nan Wu
- Gastroenterology Department, The 2 Affiliated Hospital of Kunming Medical University, Kunming, Yunnan Province, China
- * E-mail:
| | - Yuan Zhang
- The Biomedical engineering research center, Kunming Medical University, Kunming Yunnan, China
| | - Yu-Hua Li
- Gastroenterology Department, The 2 Affiliated Hospital of Kunming Medical University, Kunming, Yunnan Province, China
| |
Collapse
|
19
|
Wan YM, Wu HM, Li YH, Xu ZY, Yang JH, Liu C, He YF, Wang MJ, Wu XN, Zhang Y. TSG-6 Inhibits Oxidative Stress and Induces M2 Polarization of Hepatic Macrophages in Mice With Alcoholic Hepatitis via Suppression of STAT3 Activation. Front Pharmacol 2020; 11:10. [PMID: 32116692 PMCID: PMC7010862 DOI: 10.3389/fphar.2020.00010] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2019] [Accepted: 01/07/2020] [Indexed: 12/19/2022] Open
Abstract
Tumor necrosis factor (TNF)-α-stimulated protein 6 (TSG-6) is a secreted protein with diverse tissue protective and anti-inflammatory properties. We aimed to investigate its effective in treating mice with alcoholic hepatitis (AH) and the associated mechanisms. AH was induced in 8-10 week female C57BL/6N mice by chronic-binge ethanol feeding for 10 days. Intraperitoneal (i.p.) injection of recombinant mouse TSG-6 or saline were performed in mice on day 10. Blood samples and hepatic tissues were collected on day 11. Biochemistry, liver histology, flow cytometry, and cytokine measurements were conducted. Compared to the normal control mice, the AH mice had significantly increased liver/body weight ratio, serum alanine aminotransferase (ALT) and aspartate aminotransferases (AST), hepatic total cholesterol (TC), triglyceride (TG), malondialdehyde (MDA), hepatic macrophage infiltration, serum and hepatic interleukin (IL)-6, and tumor necrosis factor (TNF)-α, which were markedly reduced by i.p. injection of rmTSG-6. Compared to the normal control mice, the hepatic glutathione (GSH), accumulation of M2 macrophages, serum, and hepatic IL-10 and TSG-6 were prominently reduced in the AH mice, which were significantly enhanced after i.p. injection of rmTSG-6. Compared to the normal control mice, hepatic activation of signal transducer and activator of transcription 3 (STAT3) was significantly induced, which was markedly suppressed by rmTSG-6 treatment. TSG-6 were effective for the treatment of AH mice, which might be associated with its ability in inhibiting hepatic oxidative stress and inducing hepatic M2 macrophages polarization via suppressing STAT3 activation.
Collapse
Affiliation(s)
- Yue-Meng Wan
- Gastroenterology Department, the 2 Affiliated Hospital of Kunming Medical University, Kunming, China
- Department of Occupational, Labor and Environmental Health, Public Health Institute of Kunming Medical University, Kunming, China
| | - Hua-Mei Wu
- Gastroenterology Department, the 2 Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Yu-Hua Li
- Gastroenterology Department, the 2 Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Zhi-Yuan Xu
- Gastroenterology Department, the 2 Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Jin-Hui Yang
- Gastroenterology Department, the 2 Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Chang Liu
- Department of Occupational, Labor and Environmental Health, Public Health Institute of Kunming Medical University, Kunming, China
| | - Yue-Feng He
- Department of Occupational, Labor and Environmental Health, Public Health Institute of Kunming Medical University, Kunming, China
| | - Men-Jie Wang
- Department of Occupational, Labor and Environmental Health, Public Health Institute of Kunming Medical University, Kunming, China
| | - Xi-Nan Wu
- Department of Occupational, Labor and Environmental Health, Public Health Institute of Kunming Medical University, Kunming, China
| | - Yuan Zhang
- The Biomedical Engineering Research Center, Kunming Medical University, Kunming, China
| |
Collapse
|
20
|
PTP1B promotes macrophage activation by regulating the NF-κB pathway in alcoholic liver injury. Toxicol Lett 2020; 319:11-21. [DOI: 10.1016/j.toxlet.2019.11.001] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2019] [Revised: 10/25/2019] [Accepted: 11/01/2019] [Indexed: 02/07/2023]
|
21
|
Wan YM, Li ZQ, Zhou Q, Liu C, Wang MJ, Wu HX, Mu YZ, He YF, Zhang Y, Wu XN, Li YH, Xu ZY, Wu HM, Xu Y, Yang JH, Wang XF. Mesenchymal stem cells alleviate liver injury induced by chronic-binge ethanol feeding in mice via release of TSG6 and suppression of STAT3 activation. Stem Cell Res Ther 2020; 11:24. [PMID: 31931878 PMCID: PMC6958598 DOI: 10.1186/s13287-019-1547-8] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Revised: 12/10/2019] [Accepted: 12/29/2019] [Indexed: 12/20/2022] Open
Abstract
Background Mesenchymal stem cells (MSCs) are a population of pluripotent cells that might be used for treatment of liver disease. However, the efficacy of MSCs for mice with alcoholic hepatitis (AH) and its underlying mechanism remains unclear. Methods MSCs were isolated from the bone marrow (BM) of 4–6-week-old male C57BL/6 N mice. AH was induced in female mice by chronic-binge ethanol feeding for 10 days. The mice were given intraperitoneal injections of MSCs with or without transfection or AG490, recombinant mouse tumor necrosis factor (TNF)-α-stimulated gene/protein 6 (rmTSG-6), or saline at day 10. Blood samples and hepatic tissues were collected at day 11. Various assays such as biochemistry, histology, and flow cytometry were performed. Results MSCs reduced AH in mice, decreasing liver/body weight ratio, liver injury, blood and hepatic lipids, malondialdehyde, interleukin (IL)-6, and TNF-ɑ, but increasing glutathione, IL-10, and TSG-6, compared to control mice. Few MSCs engrafted into the inflamed liver. Knockdown of TSG-6 in MSCs significantly attenuated their effects, and injection of rmTSG-6 achieved similar effects to MSCs. The signal transducer and activator of transcription 3 (STAT3) was activated in mice with AH, and MSCs and rmTSG-6 inhibited the STAT3 activation. Injection of MSCs plus AG490 obtained more alleviation of liver injury than MSCs alone. Conclusions BM-MSCs injected into mice with AH do not engraft the liver, but they secrete TSG-6 to reduce liver injury and to inhibit STAT3 activation.
Collapse
Affiliation(s)
- Yue-Meng Wan
- Gastroenterology Department, The 2nd Affiliated Hospital of Kunming Medical University, Kunming City, 650101, Yunnan Province, China.,Public Health Institute of Kunming Medical University, Kunming City, 650500, Yunnan Province, China
| | - Zhi-Qiang Li
- Public Health Institute of Kunming Medical University, Kunming City, 650500, Yunnan Province, China
| | - Qiong Zhou
- Public Health Institute of Kunming Medical University, Kunming City, 650500, Yunnan Province, China
| | - Chang Liu
- Public Health Institute of Kunming Medical University, Kunming City, 650500, Yunnan Province, China
| | - Men-Jie Wang
- Public Health Institute of Kunming Medical University, Kunming City, 650500, Yunnan Province, China
| | - Hui-Xin Wu
- Public Health Institute of Kunming Medical University, Kunming City, 650500, Yunnan Province, China
| | - Yun-Zhen Mu
- Public Health Institute of Kunming Medical University, Kunming City, 650500, Yunnan Province, China
| | - Yue-Feng He
- Public Health Institute of Kunming Medical University, Kunming City, 650500, Yunnan Province, China
| | - Yuan Zhang
- The Biomedical Engineering Research Center, Kunming Medical University, Kunming, 650500, Yunnan, China
| | - Xi-Nan Wu
- Public Health Institute of Kunming Medical University, Kunming City, 650500, Yunnan Province, China.
| | - Yu-Hua Li
- Gastroenterology Department, The 2nd Affiliated Hospital of Kunming Medical University, Kunming City, 650101, Yunnan Province, China
| | - Zhi-Yuan Xu
- Gastroenterology Department, The 2nd Affiliated Hospital of Kunming Medical University, Kunming City, 650101, Yunnan Province, China
| | - Hua-Mei Wu
- Gastroenterology Department, The 2nd Affiliated Hospital of Kunming Medical University, Kunming City, 650101, Yunnan Province, China
| | - Ying Xu
- Gastroenterology Department, The 2nd Affiliated Hospital of Kunming Medical University, Kunming City, 650101, Yunnan Province, China
| | - Jin-Hui Yang
- Gastroenterology Department, The 2nd Affiliated Hospital of Kunming Medical University, Kunming City, 650101, Yunnan Province, China
| | - Xiao-Fang Wang
- Department of Pathology, The 2nd Affiliated Hospital of Kunming Medical University, Kunming City, 65010, Yunnan Province, China
| |
Collapse
|
22
|
Cell cycle-dependent and -independent telomere shortening accompanies murine brain aging. Aging (Albany NY) 2019; 10:3397-3420. [PMID: 30472697 PMCID: PMC6286833 DOI: 10.18632/aging.101655] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2018] [Accepted: 11/15/2018] [Indexed: 12/16/2022]
Abstract
Replication-based telomere shortening during lifetime is species- and tissue-specific, however, its impact on healthy aging is unclear. In particular, the contribution of telomere truncation to the aging process of the CNS, where replicative senescence alone fails to explain organ aging due to low to absent mitotic activity of intrinsic populations, is undefined. Here, we assessed changes in relative telomere length in non-replicative and replicative neural brain populations and telomerase activity as a function of aging in C57BL/6 mice. Telomeres in neural cells and sub-selected neurons shortened with aging in a cell cycle-dependent and -independent manner, with preponderance in replicative moieties, implying that proliferation accelerates, but is not prerequisite for telomere shortening. Consistent with this telomere erosion, telomerase activity and nuclear TERT protein were not induced with aging. Knockdown of the Rela subunit of NF-κB, which controls both telomerase enzyme and subcellular TERT protein allocation, did also not influence telomerase activity or telomere length, in spite of its naive up-regulation selectively under aging conditions. We conclude that telomere instability is intrinsic to physiological brain aging beyond cell replication, and appears to occur independently of a functional interplay with NF-κB, but rather as a failure to induce or relocate telomerase.
Collapse
|
23
|
Kotla S, Le NT, Vu HT, Ko KA, Gi YJ, Thomas TN, Giancursio C, Lusis AJ, Cooke JP, Fujiwara K, Abe JI. Endothelial senescence-associated secretory phenotype (SASP) is regulated by Makorin-1 ubiquitin E3 ligase. Metabolism 2019; 100:153962. [PMID: 31476350 PMCID: PMC7059097 DOI: 10.1016/j.metabol.2019.153962] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Revised: 08/02/2019] [Accepted: 08/21/2019] [Indexed: 12/23/2022]
Abstract
BACKGROUND Disturbed flow (d-flow)-induced senescence and activation of endothelial cells (ECs) have been suggested to have critical roles in promoting atherosclerosis. Telomeric repeat-binding factor 2 (TERF2)-interacting protein (TERF2IP), a member of the shelterin complex at the telomere, regulates the senescence-associated secretory phenotype (SASP), in which EC activation and senescence are engendered simultaneously by p90RSK-induced phosphorylation of TERF2IP S205 and subsequent nuclear export of the TERF2IP-TERF2 complex. In this study, we investigated TERF2IP-dependent gene expression and its role in regulating d-flow-induced SASP. METHODS A principal component analysis and hierarchical clustering were used to identify genes whose expression is regulated by TERF2IP in ECs under d-flow conditions. Senescence was determined by reduced telomere length, increased p53 and p21 expression, and increased apoptosis; EC activation was detected by NF-κB activation and the expression of adhesion molecules. The involvement of TERF2IP S205 phosphorylation in d-flow-induced SASP was assessed by depletion of TERF2IP and mutation of the phosphorylation site. RESULTS Our unbiased transcriptome analysis showed that TERF2IP caused alteration in the expression of a distinct set of genes, including rapamycin-insensitive companion of mTOR (RICTOR) and makorin-1 (MKRN1) ubiquitin E3 ligase, under d-flow conditions. In particular, both depletion of TERF2IP and overexpression of the TERF2IP S205A phosphorylation site mutant in ECs increased the d-flow and p90RSK-induced MKRN1 expression and subsequently inhibited apoptosis, telomere shortening, and NF-κB activation in ECs via suppression of p53, p21, and telomerase (TERT) induction. CONCLUSIONS MKRN1 and RICTOR belong to a distinct reciprocal gene set that is both negatively and positively regulated by p90RSK. TERF2IP S205 phosphorylation, a downstream event of p90RSK activation, uniquely inhibits MKRN1 expression and contributes to EC activation and senescence, which are key events for atherogenesis.
Collapse
Affiliation(s)
- Sivareddy Kotla
- Department of Cardiology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.
| | - Nhat-Tu Le
- Center for Cardiovascular Regeneration, Department of Cardiovascular Sciences, Houston Methodist Research Institute, Houston, TX, USA
| | - Hang Thi Vu
- Department of Cardiology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Kyung Ae Ko
- Department of Cardiology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Young Jin Gi
- Department of Cardiology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Tamlyn N Thomas
- Department of Cardiology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Carolyn Giancursio
- Department of Cardiology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Aldos J Lusis
- Department of Human Genetics, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, California, USA
| | - John P Cooke
- Center for Cardiovascular Regeneration, Department of Cardiovascular Sciences, Houston Methodist Research Institute, Houston, TX, USA
| | - Keigi Fujiwara
- Department of Cardiology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Jun-Ichi Abe
- Department of Cardiology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.
| |
Collapse
|
24
|
González-Giraldo Y, Garzón-Benitez AV, Forero DA, Barreto GE. TERT inhibition leads to reduction of IL-6 expression induced by palmitic acid and interferes with the protective effects of tibolone in an astrocytic cell model. J Neuroendocrinol 2019; 31:e12768. [PMID: 31278797 DOI: 10.1111/jne.12768] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/02/2019] [Revised: 07/02/2019] [Accepted: 07/03/2019] [Indexed: 01/04/2023]
Abstract
Although it has been shown that telomerase has neuroprotective effects, mainly as a result of its non-canonical functions in neuronal cells, its role with respect to glial cells remains unknown. There is growing evidence indicating that telomerase plays an important role with respect to inflammation, especially in the regulation of pro-inflammatory cytokine gene expression. The present study aimed to evaluate the role of telomerase in an astrocyte cell model treated with palmitic acid (PA) and tibolone. Cell death, reactive oxygen species production and interleukin-6 expression were evaluated under telomerase inhibition with the BIBR1532 compound in T98G cells treated with tibolone and PA, using fluorometry, flow cytometry, enzyme-linked immunosorbent assays and the quantitative polymerase chain reaction. The results obtained showed that telomerase protein was increased by PA after 36 hours, alone or in combination with tibolone, and that its activity was affected by PA. Telomerase inhibition reduced interleukin-6 expression and it interfered with the protective effects of tibolone on cell death. Moreover, tibolone increased Tyr707 phosphorylation in PA-treated cells. In the present study, we provide novel findings about the regulation of telomerase by PA and tibolone. Telomerase was involved in inflammation by PA and in protective effects of tibolone. Therefore, we conclude that telomerase could play a dual role in these cells.
Collapse
Affiliation(s)
- Yeimy González-Giraldo
- Departamento de Nutrición y Bioquímica, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá DC, Colombia
| | - Angie V Garzón-Benitez
- Departamento de Nutrición y Bioquímica, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá DC, Colombia
| | - Diego A Forero
- Laboratory of Neuropsychiatric Genetics, Biomedical Sciences Research Group, School of Medicine, Universidad Antonio Nariño, Bogotá, Colombia
| | - George E Barreto
- Departamento de Nutrición y Bioquímica, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá DC, Colombia
| |
Collapse
|
25
|
Lu X, Liu Y, Xuan W, Ye J, Yao H, Huang C, Li J. Circ_1639 induces cells inflammation responses by sponging miR-122 and regulating TNFRSF13C expression in alcoholic liver disease. Toxicol Lett 2019; 314:89-97. [PMID: 31325635 DOI: 10.1016/j.toxlet.2019.07.021] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2019] [Revised: 07/08/2019] [Accepted: 07/15/2019] [Indexed: 12/19/2022]
Abstract
Ethanol is a key factor in the pathogenesis of alcoholic liver disease (ALD), commonly characterized as liver inflammation. Recently, circular (circ)RNAs have emerged as important targets to cure liver diseases. However, there are no studies investigating the role of circ_1639 in reducing inflammatory responses in ALD. In this study, we found that circ_1639 was upregulated in Kupffer cells from the livers of alcohol fed mice. We hypothesized that circ_1639 inhibition is a potential novel therapy for treating ALD. To test this hypothesis, RAW 264.7 cells were treated with ethanol and transfected with circ_1639 overexpression or knockdown plasmids. We present western blotting, qRT-PCR, and ELISA data that suggest that circ_1639 is a proinflammatory factor in the liver and is involved in the activation of the NF-κB signaling pathway. Using luciferase reporter assay, we confirmed that microRNA (miR)-122 is a target gene of circ_1639. We also show that TNFRSF13C is a key regulator of RAW 264.7 cell activation, and acts as a downstream target for miR-122. In summary, our results suggest that inhibition of circ_1639 expression may reduce inflammatory responses in ALD.
Collapse
Affiliation(s)
- Xinyi Lu
- The Key Laboratory of Major Autoimmune Diseases, Anhui Province, Anhui Institute of Innovative Drug, School of Pharmacy, Anhui Medical University, No. 81 Meishan Road, Hefei 230032, Anhui, China
| | - Yaru Liu
- The Key Laboratory of Major Autoimmune Diseases, Anhui Province, Anhui Institute of Innovative Drug, School of Pharmacy, Anhui Medical University, No. 81 Meishan Road, Hefei 230032, Anhui, China
| | - Wenting Xuan
- First affiliated hospital of Anhui Medical University, Hefei city, Anhui province, People's Republic of China
| | - Jun Ye
- First affiliated hospital of Anhui Medical University, Hefei city, Anhui province, People's Republic of China
| | - Hongwei Yao
- The Key Laboratory of Major Autoimmune Diseases, Anhui Province, Anhui Institute of Innovative Drug, School of Pharmacy, Anhui Medical University, No. 81 Meishan Road, Hefei 230032, Anhui, China; Molecular Biology, Cell biology, and Biochemistry, Brown University, Rhode Island, US
| | - Cheng Huang
- The Key Laboratory of Major Autoimmune Diseases, Anhui Province, Anhui Institute of Innovative Drug, School of Pharmacy, Anhui Medical University, No. 81 Meishan Road, Hefei 230032, Anhui, China.
| | - Jun Li
- The Key Laboratory of Major Autoimmune Diseases, Anhui Province, Anhui Institute of Innovative Drug, School of Pharmacy, Anhui Medical University, No. 81 Meishan Road, Hefei 230032, Anhui, China.
| |
Collapse
|
26
|
Li S, Tan HY, Wang N, Feng Y, Wang X, Feng Y. Recent Insights Into the Role of Immune Cells in Alcoholic Liver Disease. Front Immunol 2019; 10:1328. [PMID: 31244862 PMCID: PMC6581703 DOI: 10.3389/fimmu.2019.01328] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2019] [Accepted: 05/24/2019] [Indexed: 12/12/2022] Open
Abstract
Accumulating clinical and experimental evidences have demonstrated that both innate and adaptive immunity are involved in the pathogenesis of alcoholic liver disease (ALD), in which the role of immunity is to fuel the inflammation and to drive the progression of ALD. Various immune cells are implicated in the pathogenesis of ALD. The activation of innate immune cells induced by alcohol and adaptive immune response triggered by oxidative modification of hepatic constituents facilitate the persistent hepatic inflammation. Meanwhile, the suppressed antigen-presenting capability of various innate immune cells and impaired function of T cells may consequently lead to an increased risk of infection in the patients with advanced ALD. In this review, we summarized the significant recent findings of immune cells participating in ALD. The pathways and molecules involved in the regulation of specific immune cells, and novel mediators protecting the liver from alcoholic injury via affecting these cells are particularly highlighted. This review aims to update the knowledge about immunity in the pathogenesis of ALD, which may facilitate to enhancement of currently available interventions for ALD treatment.
Collapse
Affiliation(s)
- Sha Li
- Li Ka Shing Faculty of Medicine, School of Chinese Medicine, The University of Hong Kong, Hong Kong, China
| | - Hor-Yue Tan
- Li Ka Shing Faculty of Medicine, School of Chinese Medicine, The University of Hong Kong, Hong Kong, China
| | - Ning Wang
- Li Ka Shing Faculty of Medicine, School of Chinese Medicine, The University of Hong Kong, Hong Kong, China
| | - Yigang Feng
- Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Xuanbin Wang
- Laboratory of Chinese Herbal Pharmacology, Laboratory of Wudang Local Chinese Medicine Research, Oncology Center, Renmin Hospital, Hubei University of Medicine, Shiyan, China
| | - Yibin Feng
- Li Ka Shing Faculty of Medicine, School of Chinese Medicine, The University of Hong Kong, Hong Kong, China
| |
Collapse
|
27
|
4-Methylcoumarin-[5,6-g]-hesperetin attenuates inflammatory responses in alcoholic hepatitis through PPAR-γ activation. Toxicology 2019; 421:9-21. [PMID: 30951781 DOI: 10.1016/j.tox.2019.04.004] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2018] [Revised: 03/29/2019] [Accepted: 04/01/2019] [Indexed: 12/19/2022]
Abstract
4-Methylcoumarin-[5,6-g]-hesperetin (4-MCH) is a hesperidin derivative produced by the structural modification of hesperetin. Alcoholic hepatitis (AH) is the origin of many serious liver diseases that are accompanied by hepatic inflammation. In this study, we detected the anti-inflammatory activity of 4-MCH in EtOH fed mice and examined the potential molecular mechanism of this activity. We found that 4-MCH suppressed the release of inflammatory cytokines such as interleukin-6 (IL-6) and tumor necrosis factor-α (TNF-α) in primary liver macrophages isolated from mice and in EtOH-treated RAW264.7 cells. In addition, we showed that the expression of peroxisome proliferator-activated receptor-γ (PPAR-γ) was down-regulated in vivo and in vitro in AH. Furthermore, 4-MCH acted as an activator of PPAR-γ, which could therefore ameliorate the inhibitory effects of EtOH on the expression of PPAR-γ. The impairment of PPAR-γ function (T0070907 or PPAR-γ siRNA treatment) resulted in greater inflammation than that in the control group. Conversely, over-expression of PPAR-γ further reduced the release of inflammatory cytokines from EtOH-stimulated RAW264.7 cells. Additional investigations showed that 4-MCH significantly inhibited the phosphorylation of p65. Collectively, these results indicate that 4-MCH alleviated the inflammatory reaction through PPAR-γ activation via the NF-κB-p65 signaling pathway, which regulates the expression of IL-6 and TNF-α in AH.
Collapse
|
28
|
Zhang J, Li N, Yang L, Xie H, Yang Y, Wang H, Wu C, Shen T, Zhu Q. Bradykinin contributes to immune liver injury via B2R receptor-mediated pathways in trichloroethylene sensitized mice: A role in Kupffer cell activation. Toxicology 2019; 415:37-48. [PMID: 30685357 DOI: 10.1016/j.tox.2019.01.015] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2018] [Revised: 12/18/2018] [Accepted: 01/23/2019] [Indexed: 01/20/2023]
Abstract
We have previously shown trichloroethylene (TCE) induced occupational medicamentosa-like dermatitis due to TCE (OMLDT) with immune liver injury, and kallikrein-kinin system (KKS) activation as a probably mechanism underlying the immune damage. Bradykinin (BK) is an important active component of KKS system function, but the specific role of BK in the immune liver injury has never been examined. The present study aimed to explore the important role of BK and mechanisms of action in immune liver injury induced by TCE. TCE sensitization significantly increased the expression of BK receptor (B2R) in the liver. Compared to blank and vehicle control group, TCE sensitization positive mice developed exacerbated liver injury evidenced by elevated AST, ALT levels and hepatocyte damage. TCE sensitization also stimulated MAPK and STAT3 activation in liver tissue. B2R antagonist HOE140 ameliorated these changes. Kupffer cells (KCs) of the liver were also activated following TCE sensitization; both CD68+ KCs and CD16/CD32+ M1 type KCs were increased in TCE positive group. Further experiments isolated the KCs from the liver in each group and showed that TCE sensitization resulted activation of MAPK signal pathway which in turn caused release of the pro-inflammatory cytokines, IL-1β, IL-6, TNF-α, in KCs; the antagonist HOE140 again decreased these changes in KCs. These results uncover a novel role of BK and B2R cross-talk in KCs activation in TCE sensitized mice, mediated by pro-inflammatory cytokine release via MAPK and STAT3 activation, contributing to the immune liver injury.
Collapse
Affiliation(s)
- Jiaxiang Zhang
- Institute of Dermatology, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China; Department of Occupational Health and Environment Health, School of Public Health, Anhui Medical University, Hefei, Anhui, China
| | - Na Li
- Department of Occupational Health and Environment Health, School of Public Health, Anhui Medical University, Hefei, Anhui, China
| | - Ling Yang
- Institute of Dermatology, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
| | - Haibo Xie
- Department of Occupational Health and Environment Health, School of Public Health, Anhui Medical University, Hefei, Anhui, China
| | - Yi Yang
- Department of Occupational Health and Environment Health, School of Public Health, Anhui Medical University, Hefei, Anhui, China
| | - Hui Wang
- Department of Nutrition, Chaohu Hospital of Anhui Medical University, Hefei, Anhui, China
| | - Changhao Wu
- School of Biosciences and Medicine, Faculty of Health and Medical Sciences, University of Surrey, Guildford, UK
| | - Tong Shen
- Department of Occupational Health and Environment Health, School of Public Health, Anhui Medical University, Hefei, Anhui, China.
| | - Qixing Zhu
- Institute of Dermatology, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China.
| |
Collapse
|
29
|
Sun YY, Zhao YX, Li XF, Huang C, Meng XM, Li J. β-Arrestin 2 Promotes Hepatocyte Apoptosis by Inhibiting Akt Pathway in Alcoholic Liver Disease. Front Pharmacol 2018; 9:1031. [PMID: 30283336 PMCID: PMC6156347 DOI: 10.3389/fphar.2018.01031] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2018] [Accepted: 08/24/2018] [Indexed: 12/20/2022] Open
Abstract
Alcoholic liver disease (ALD) is a complex process that includes a wide range of hepatic lesions, from steatosis to cirrhosis, and even hepatocellular carcinoma (HCC). Accumulating evidence shows that the cytotoxic effects of ethanol metabolism lead to cell apoptosis and necrosis in ALD. Recently, several studies revealed that multifunctional protein β-arrestin 2 (Arrb2) modulated cell apoptosis in liver fibrosis and HCC, but its role in ALD has not been fully understood. The aim of this study is to explore the function and underlying mechanism of Arrb2 in hepatocyte survival and apoptosis in ALD. In our study, the primary hepatocytes were isolated from the livers of C57BL/6 mice fed EtOH-containing diet, it showed an increased level of Arrb2. EtOH also significantly up-regulated Arrb2 production in AML-12 cells in vitro. Furthermore, TUNEL (terminal deoxynucleotidyl transferase-mediated dUTP nick end labeling) and FCM results demonstrated that knockdown of Arrb2 could inhibit hepatocyte apoptosis induced by EtOH in vivo and vitro while over-expression of Arrb2 induced apoptosis in ALD. In addition, western blot results revealed that Arrb2 remarkably suppressed the Akt signaling. Taken together, our data suggested that Arrb2 may serve as a potential therapeutic target for ALD by promoting hepatocyte apoptosis via Akt suppression.
Collapse
Affiliation(s)
- Ying-Yin Sun
- Anhui Key Laboratory of Bioactivity of Natural Products, School of Pharmacy, Anhui Medical University, Hefei, China
| | - Yu-Xin Zhao
- Anhui Key Laboratory of Bioactivity of Natural Products, School of Pharmacy, Anhui Medical University, Hefei, China
| | - Xiao-Feng Li
- Anhui Key Laboratory of Bioactivity of Natural Products, School of Pharmacy, Anhui Medical University, Hefei, China
| | - Cheng Huang
- Anhui Key Laboratory of Bioactivity of Natural Products, School of Pharmacy, Anhui Medical University, Hefei, China
| | - Xiao-Ming Meng
- Anhui Key Laboratory of Bioactivity of Natural Products, School of Pharmacy, Anhui Medical University, Hefei, China
| | - Jun Li
- Anhui Key Laboratory of Bioactivity of Natural Products, School of Pharmacy, Anhui Medical University, Hefei, China
| |
Collapse
|
30
|
Staffaroni AM, Tosun D, Lin J, Elahi FM, Casaletto KB, Wynn MJ, Patel N, Neuhaus J, Walters SM, Epel ES, Blackburn EH, Kramer JH. Telomere attrition is associated with declines in medial temporal lobe volume and white matter microstructure in functionally independent older adults. Neurobiol Aging 2018; 69:68-75. [PMID: 29859365 PMCID: PMC6430612 DOI: 10.1016/j.neurobiolaging.2018.04.021] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2018] [Revised: 03/29/2018] [Accepted: 04/28/2018] [Indexed: 12/24/2022]
Abstract
Although leukocyte telomere length (TL) shortens over the lifespan and is associated with diseases of aging, little is known about the relationships between TL, memory, and brain structure. Sixty-nine functionally normal older adults (mean age = 71.7) were assessed at 2 time points (mean interval = 2.9 years). Linear mixed models assessed relationships between TL and hippocampal volume, fractional anisotropy, and mean diffusivity (MD) of the fornix and verbal and visual episodic memory. Unstandardized coefficients are reported in the following, and p values are not corrected for multiple comparisons. A negative baseline trend was observed between TL and fornix MD (b = -0.01, p = 0.06), but no other cross-sectional associations were significant (ps > 0.16). Greater TL shortening at follow-up was associated with greater hippocampal volume loss (b = 27.09, p < 0.001), even after controlling for global volume loss (b = 10.83, p = 0.002). Greater telomere attrition was also associated with larger increases in fornix MD (b = -0.01, p = 0.012) and decreases in fornix fractional anisotropy (b = 0.004, p = 0.002). TL was not associated with changes in episodic memory (ps > 0.23). These relationships may reflect neurobiological influences that affect both TL and brain structure, as well as the effect of TL on brain aging via mechanisms such as cellular senescence and inflammation.
Collapse
Affiliation(s)
- Adam M Staffaroni
- Department of Neurology, Memory and Aging Center, University of California at San Francisco, San Francisco, CA, USA.
| | - Duygu Tosun
- Department of Veteran Affairs Medical Center, San Francisco, CA, USA; Department of Radiology and Biomedical Imaging, University of California at San Francisco, San Francisco, CA, USA
| | - Jue Lin
- Department of Biochemistry and Biophysics, University of California at San Francisco, San Francisco, CA, USA
| | - Fanny M Elahi
- Department of Neurology, Memory and Aging Center, University of California at San Francisco, San Francisco, CA, USA
| | - Kaitlin B Casaletto
- Department of Neurology, Memory and Aging Center, University of California at San Francisco, San Francisco, CA, USA
| | - Matthew J Wynn
- Department of Neurology, Memory and Aging Center, University of California at San Francisco, San Francisco, CA, USA
| | - Nihar Patel
- Department of Neurology, Memory and Aging Center, University of California at San Francisco, San Francisco, CA, USA
| | - John Neuhaus
- Department of Epidemiology and Biostatistics, University of California, San Francisco, USA
| | - Samantha M Walters
- Department of Neurology, Memory and Aging Center, University of California at San Francisco, San Francisco, CA, USA
| | - Elissa S Epel
- Department of Psychiatry, University of California at San Francisco, San Francisco, CA, USA
| | | | - Joel H Kramer
- Department of Neurology, Memory and Aging Center, University of California at San Francisco, San Francisco, CA, USA
| |
Collapse
|
31
|
Activating the PGC-1 α/TERT Pathway by Catalpol Ameliorates Atherosclerosis via Modulating ROS Production, DNA Damage, and Telomere Function: Implications on Mitochondria and Telomere Link. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2018; 2018:2876350. [PMID: 30046372 PMCID: PMC6036816 DOI: 10.1155/2018/2876350] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/14/2018] [Accepted: 03/15/2018] [Indexed: 12/17/2022]
Abstract
Catalpol, an iridoid glucoside, has been found present in large quantities in the root of Rehmannia glutinosa L. and showed a strong antioxidant capacity in the previous study. In the present work, the protective effect of catalpol against AS via inhibiting oxidative stress, DNA damage, and telomere shortening was found in LDLr-/- mice. This study also shows that activation of the peroxisome proliferator-activated receptor-γ coactivator-1α (PGC-1α)/telomerase reverse transcriptase (TERT) pathway, which is the new link between mitochondria and telomere, was involved in the protective effects of catalpol. Further, by using PGC-1α or TERT siRNA in oxLDL-treated macrophages, it is proved that catalpol reduced oxidative stress, telomere function, and related DNA damage at least partly through activating the PGC-1α/TERT pathway. Moreover, dual luciferase activity assay-validated catalpol directly enhanced PGC-1α promoter activity. In conclusion, our study revealed that the PGC-1α/TERT pathway might be a possible therapeutic target in AS and catalpol has highly favorable characteristics for the treatment of AS via modulating this pathway.
Collapse
|
32
|
Yan A, Zhang Y, Lin J, Song L, Wang X, Liu Z. Partial Depletion of Peripheral M1 Macrophages Reverses Motor Deficits in MPTP-Treated Mouse by Suppressing Neuroinflammation and Dopaminergic Neurodegeneration. Front Aging Neurosci 2018; 10:160. [PMID: 29922149 PMCID: PMC5996129 DOI: 10.3389/fnagi.2018.00160] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2018] [Accepted: 05/14/2018] [Indexed: 01/16/2023] Open
Abstract
Background: Neuroinflammation plays an important role in the pathogenesis of Parkinson's disease (PD). Inflammatory cytokines in the peripheral immune system can induce neuroinflammation in central nervous system (CNS). Whether the peripheral immune system is involved in PD is unclear. The present study investigated the contribution of the peripheral immune system to the neuronal loss in the 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine(MPTP) model of PD. Methods: MPTP was intraperitoneally injected into mice to generate a PD model. Mice received clodronate liposomes every 3 days to deplete peripheral macrophages. The percentages of macrophages were measured by flow cytometry at 1, 3, and 7 days after MPTP injection. Neurobehavioral parameters, protein expression, inflammatory cytokines release, and microglia activation were measured by the open field test, western blotting, quantitative polymerase chain reaction (qPCR), and immunofluorescence staining, respectively at 7 days after MPTP injection. Results: Our study revealed that intraperitoneal injection of MPTP could increase peripheral M1 macrophages levels. It also can induce T cells infiltration and cytokine release. Depletion of M1 macrophages by clodronate liposomes suppressed these inflammatory effects and blunted the loss of TH+ nigral neurons and functional impairments caused by MPTP. Conclusion: Our results indicated the critical role of M1 macrophages in the pathogenesis of PD and proposed inhibition of M1 macrophages as a promising therapeutic approach for neurodegeneration.
Collapse
Affiliation(s)
- Aijuan Yan
- Department of Neurology, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yu Zhang
- Department of Neurology, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jingya Lin
- Department of Neurology, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Lu Song
- Department of Neurology, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xijin Wang
- Department of Neurology, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Zhenguo Liu
- Department of Neurology, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| |
Collapse
|
33
|
Wang Q, Liang Y, Qiao Y, Zhao X, Yang Y, Yang S, Li B, Zhao Q, Dong L, Quan S, Tian R, Liu Z. Expression of soluble epoxide hydrolase in renal tubular epithelial cells regulates macrophage infiltration and polarization in IgA nephropathy. Am J Physiol Renal Physiol 2018; 315:F915-F926. [PMID: 29717935 DOI: 10.1152/ajprenal.00534.2017] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Tubulointerstitial inflammatory cell infiltration and activation contribute to kidney inflammation and fibrosis. Epoxyeicosatrienoic acids (EETs), which are rapidly metabolized to dihydroxyeicosatrienoic acids by the soluble epoxide hydrolase (sEH), have multiple biological functions, including vasodilation, anti-inflammatory action, and others. Inhibition of sEH has been demonstrated to attenuate inflammation in many renal disease models. However, the relationship between sEH expression and macrophage polarization in the kidney remains unknown. In this study, we investigated the relationships between the level of sEH and clinical and pathological parameters in IgA nephropathy. The level of sEH expression positively correlated with proteinuria and infiltration of macrophages. sEH-positive tubules were found to be surrounded by macrophages. Furthermore, we found that incubation of immortalized human proximal tubular HK-2 cells with total urinary protein and overexpression of sEH promoted inflammatory factor production, which was associated with M1 polarization. We also exposed RAW264.7 mouse leukemic monocytes/macrophages to different HK-2 cell culture media conditioned by incubation with various substances affecting sEH amount or activity. We found that the upregulation of sEH promoted M1 polarization. However, pharmacological inhibition of sEH and supplementation with EETs reversed the conditioning effects of urinary proteins by inhibiting M1 polarization through the NF-κB pathway and stimulating M2 polarization through the phosphatidylinositol 3-kinase pathway. These data suggest that inhibition of sEH could be a new strategy to prevent the progression of inflammation and to attenuate renal tubulointerstitial fibrosis.
Collapse
Affiliation(s)
- Qian Wang
- Department of Geriatric Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China.,Institute of Nephrology, Zhengzhou University , Zhengzhou , China
| | - Yan Liang
- Institute of Nephrology, Zhengzhou University , Zhengzhou , China.,Department of Nephrology, The First Affiliated Hospital of Zhengzhou University , Zhengzhou , China
| | - Yingjin Qiao
- Institute of Nephrology, Zhengzhou University , Zhengzhou , China.,Blood Purification Center, The First Affiliated Hospital of Zhengzhou University , Zhengzhou , China
| | - Xiangya Zhao
- Department of Geriatric Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Yi Yang
- Department of Geriatric Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Shengnan Yang
- Department of Geriatric Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Bing Li
- Department of Geriatric Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Qianru Zhao
- Department of Geriatric Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Ling Dong
- Department of Geriatric Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Songxia Quan
- Department of Pathology, The First Affiliated Hospital of Zhengzhou University , Zhengzhou , China
| | - Rui Tian
- Department of Geriatric Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Zhangsuo Liu
- Institute of Nephrology, Zhengzhou University , Zhengzhou , China.,Department of Nephrology, The First Affiliated Hospital of Zhengzhou University , Zhengzhou , China
| |
Collapse
|
34
|
Jiao J, Watt GP, Stevenson HL, Calderone TL, Fisher-Hoch SP, Ye Y, Wu X, Vierling JM, Beretta L. Telomerase reverse transcriptase mutations in plasma DNA in patients with hepatocellular carcinoma or cirrhosis: Prevalence and risk factors. Hepatol Commun 2018; 2:718-731. [PMID: 29881823 PMCID: PMC5983165 DOI: 10.1002/hep4.1187] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/11/2018] [Revised: 03/02/2018] [Accepted: 03/28/2018] [Indexed: 02/06/2023] Open
Abstract
Telomerase reverse transcriptase (TERT) mutation is the most frequent genetic alteration in hepatocellular carcinoma (HCC). Our aims were to investigate whether TERT mutations can be detected in circulating cell‐free DNA (cfDNA) of patients with HCC and/or cirrhosis and characterize clinical parameters associated with these mutations. We retrieved data on TERT C228T and C250T promoter mutations in 196 HCCs from The Cancer Genome Atlas. We measured these TERT mutations in plasma cfDNA in 218 patients with HCC and 81 patients with cirrhosis without imaging evidence of HCC. The prevalence of TERT mutations in The Cancer Genome Atlas HCC specimens was 44.4%. TERT mutations were detected with similar prevalence (47.7%) in plasma cfDNAs from 218 patients with HCC. TERT mutations, either within the HCC or in cfDNA, were associated with male sex, hepatitis C virus (HCV), alcoholic cirrhosis, family history of cancer, and poor prognosis. The high prevalence of TERT mutations in HCCs in male patients with cirrhosis caused by HCV and/or alcohol was confirmed in an independent set of HCCs (86.6%). Finally, TERT mutations were detected in cfDNA of 7 out of 81 (8.6%) patients with cirrhosis without imaging evidence of HCC, including 5 male patients with cirrhosis due to HCV and/or alcohol. Genes involved in xenobiotic and alcohol metabolism were enriched in HCCs with TERT mutations, and vitamin K2 was identified as an upstream regulator. Conclusion: TERT mutations are detectable in plasma cfDNA. Long‐term imaging surveillance of patients with cirrhosis with cfDNA TERT mutations without evidence of HCC is required to assess their potential as early biomarkers of HCC. (Hepatology Communications 2018;2:718‐731)
Collapse
Affiliation(s)
- Jingjing Jiao
- Department of Molecular and Cellular Oncology University of Texas MD Anderson Cancer Center Houston TX
| | - Gordon P Watt
- Department of Molecular and Cellular Oncology University of Texas MD Anderson Cancer Center Houston TX.,School of Public Health University of Texas Health Science Center at Houston Brownsville Regional Campus Brownsville TX
| | | | - Tiffany L Calderone
- Department of Molecular and Cellular Oncology University of Texas MD Anderson Cancer Center Houston TX
| | - Susan P Fisher-Hoch
- School of Public Health University of Texas Health Science Center at Houston Brownsville Regional Campus Brownsville TX
| | - Yuanqing Ye
- Department of Epidemiology University of Texas MD Anderson Cancer Center Houston TX
| | - Xifeng Wu
- Department of Epidemiology University of Texas MD Anderson Cancer Center Houston TX
| | - John M Vierling
- Departments of Medicine and Surgery Baylor College of Medicine Houston TX
| | - Laura Beretta
- Department of Molecular and Cellular Oncology University of Texas MD Anderson Cancer Center Houston TX
| |
Collapse
|
35
|
Cheng XY, Liu JD, Lu XY, Yan X, Huang C, Meng XM, Li J. miR-203 Inhibits Alcohol-Induced Hepatic Steatosis by Targeting Lipin1. Front Pharmacol 2018; 9:275. [PMID: 29670525 PMCID: PMC5893905 DOI: 10.3389/fphar.2018.00275] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2017] [Accepted: 03/12/2018] [Indexed: 12/16/2022] Open
Abstract
Alcoholic liver disease (ALD) is a global liver disease which characterized by liver inflammation, fatty liver, alcoholic hepatitis, or liver cirrhosis. Alcohol abuse is one of the main reasons for liver disease. Alcoholic fatty liver (AFL) disease is the early stage of ALD and associated with the excessive lipids accumulation in hepatocytes as well as oxidative stress. MicroRNA-203 (miR-203) is known to suppress the proliferation and metastasis of hepatocellular carcinoma, but the role in the progression of alcoholic liver disease is not clear and is warranted for further investigation. In the present study, we have found the expression of miR-203 is down-regulated in Gao-Binge alcoholic mice model and ethanol-induced AML-12 cell lines in vitro. Furthermore, over-expression of miR-203 decrease the lipids accumulation in liver and ethanol-induced AML-12 cells. Mechanistically, we identified that Lipin1 is a key regulator of hepatic lipid metabolism, and acts as a downstream target for miR-203. In summary, our results suggested that over-expression of miR-203 inhibited the liver lipids accumulation and the progression of AFL by targeting Lipin1.
Collapse
Affiliation(s)
- Xiao-Yu Cheng
- The Key Laboratory of Major Autoimmune Diseases, The Key Laboratory of Anti-inflammatory and Immune Medicines, Ministry of Education, Anhui Institute of Innovative Drugs, Institute for Liver Diseases, School of Pharmacy, Anhui Medical University, Hefei, China
| | - Jun-Da Liu
- The Key Laboratory of Major Autoimmune Diseases, The Key Laboratory of Anti-inflammatory and Immune Medicines, Ministry of Education, Anhui Institute of Innovative Drugs, Institute for Liver Diseases, School of Pharmacy, Anhui Medical University, Hefei, China
| | - Xin-Yi Lu
- The Key Laboratory of Major Autoimmune Diseases, The Key Laboratory of Anti-inflammatory and Immune Medicines, Ministry of Education, Anhui Institute of Innovative Drugs, Institute for Liver Diseases, School of Pharmacy, Anhui Medical University, Hefei, China
| | - Xing Yan
- The Key Laboratory of Major Autoimmune Diseases, The Key Laboratory of Anti-inflammatory and Immune Medicines, Ministry of Education, Anhui Institute of Innovative Drugs, Institute for Liver Diseases, School of Pharmacy, Anhui Medical University, Hefei, China
| | - Cheng Huang
- The Key Laboratory of Major Autoimmune Diseases, The Key Laboratory of Anti-inflammatory and Immune Medicines, Ministry of Education, Anhui Institute of Innovative Drugs, Institute for Liver Diseases, School of Pharmacy, Anhui Medical University, Hefei, China
| | - Xiao-Ming Meng
- The Key Laboratory of Major Autoimmune Diseases, The Key Laboratory of Anti-inflammatory and Immune Medicines, Ministry of Education, Anhui Institute of Innovative Drugs, Institute for Liver Diseases, School of Pharmacy, Anhui Medical University, Hefei, China
| | - Jun Li
- The Key Laboratory of Major Autoimmune Diseases, The Key Laboratory of Anti-inflammatory and Immune Medicines, Ministry of Education, Anhui Institute of Innovative Drugs, Institute for Liver Diseases, School of Pharmacy, Anhui Medical University, Hefei, China
| |
Collapse
|
36
|
Sun C, Chen SY. RGC32 Promotes Bleomycin-Induced Systemic Sclerosis in a Murine Disease Model by Modulating Classically Activated Macrophage Function. THE JOURNAL OF IMMUNOLOGY 2018; 200:2777-2785. [PMID: 29507108 DOI: 10.4049/jimmunol.1701542] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2017] [Accepted: 02/10/2018] [Indexed: 12/20/2022]
Abstract
Systemic sclerosis (SSc) is a multisystem autoimmune disorder that is characterized by inflammation and fibrosis in the skin and internal organs. Previous studies indicate that inflammatory cells and cytokines play essential roles in the pathogenesis of SSc; however, the mechanisms that underlie the inflammation-driven development of SSc are not fully understood. In this study, we show that response gene to complement 32 (RGC32) is abundantly expressed in mouse macrophages in the early stage of bleomycin-induced SSc. Importantly, RGC32 is required to induce the inflammatory response during the onset of SSc, because RGC32 deficiency in mice significantly ameliorates skin and lung sclerosis and inhibits the expression of inflammatory mediators inducible NO synthase (iNOS) and IL-1β in macrophages. RGC32 appears to be a novel regulator for the differentiation of classically activated macrophages (M1 macrophages). IFN-γ and LPS stimulation induces RGC32 expression in primary peritoneal macrophages and bone marrow-derived macrophages. RGC32 deficiency impairs the polarization of M1 macrophages and attenuates iNOS and IL-1β production. Mechanistically, RGC32 interacts with NF-κB proteins and promotes iNOS and IL-1β expression by binding to their promoters. Collectively, our data reveal that RGC32 promotes the onset of SSc by regulating the inflammatory response of M1 macrophages, and it may serve as a promising therapeutic target for treating SSc.
Collapse
Affiliation(s)
- Chenming Sun
- Department of Physiology and Pharmacology, University of Georgia, Athens, GA 30602
| | - Shi-You Chen
- Department of Physiology and Pharmacology, University of Georgia, Athens, GA 30602
| |
Collapse
|
37
|
Wang D, Gao Q, Wang T, Zhao G, Qian F, Huang J, Wang H, Zhang X, Wang Y. Green tea infusion protects against alcoholic liver injury by attenuating inflammation and regulating the PI3K/Akt/eNOS pathway in C57BL/6 mice. Food Funct 2018; 8:3165-3177. [PMID: 28782772 DOI: 10.1039/c7fo00791d] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Alcohol intake is a major risk factor for the pathogenesis of alcoholic liver diseases. Accumulating evidence suggests that green tea protects against alcoholic liver injury; however, the underlying mechanisms remain unclear. The present study investigated the role of endothelial nitric oxide synthase (eNOS) in the protective effects of green tea against alcohol-induced liver injury and inflammation. Ethanol was intragastrically administered to male C57BL/6 mice once a day, and the mice were allowed free access to green tea infusion or water for two weeks. We assessed the plasma levels of alanine aminotransferase and aspartate aminotransferase, hepatic contents of thiobarbituric acid reactive substances, malondialdehyde and triglyceride and hepatic mRNA expression of pro-inflammatory cytokines (interleukin-1β, tumor necrosis factor-α, and interleukin-6). Our results showed that compared with water alone, green tea infusion markedly reduced liver damage, hepatic oxidative stress, hepatic lipid accumulation and inflammatory response. Green tea infusion also significantly reduced hepatic nuclear factor-κB expression and its downstream inflammatory mediators (inducible nitric oxide synthase and cyclooxygenase-2) mRNA levels in ethanol-treated mice. Additionally, green tea infusion significantly activated hepatic phosphorylated phosphatidylinositol 3-kinase (PI3K) and phosphorylated protein kinase B (Akt), which are associated with the upregulation of phosphorylated eNOS expression and the increase of plasma nitric oxide levels in ethanol-treated mice. Furthermore, the protective effects of green tea infusion were considerably inhibited by the eNOS inhibitor NG-nitro-l-arginine methyl ester in ethanol-treated mice. In conclusion, our study demonstrated that the protective effects of green tea infusion on alcohol-induced liver injury and inflammation involve the modulation of the PI3K/AKT/eNOS pathway.
Collapse
Affiliation(s)
- Dongxu Wang
- State Key Laboratory of Tea Plant Biology and Utilization, School of Tea and Food Science & Technology, Anhui Agricultural University, Hefei, Anhui, PR China.
| | | | | | | | | | | | | | | | | |
Collapse
|
38
|
Jose SS, Bendickova K, Kepak T, Krenova Z, Fric J. Chronic Inflammation in Immune Aging: Role of Pattern Recognition Receptor Crosstalk with the Telomere Complex? Front Immunol 2017; 8:1078. [PMID: 28928745 PMCID: PMC5591428 DOI: 10.3389/fimmu.2017.01078] [Citation(s) in RCA: 64] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2017] [Accepted: 08/18/2017] [Indexed: 12/22/2022] Open
Abstract
Age-related decline in immunity is characterized by stem cell exhaustion, telomere shortening, and disruption of cell-to-cell communication, leading to increased patient risk of disease. Recent data have demonstrated that chronic inflammation exerts a strong influence on immune aging and is closely correlated with telomere length in a range of major pathologies. The current review discusses the impact of inflammation on immune aging, the likely molecular mediators of this process, and the various disease states that have been linked with immunosenescence. Emerging findings implicate NF-κB, the major driver of inflammatory signaling, in several processes that regulate telomere maintenance and/or telomerase activity. While prolonged triggering of pattern recognition receptors is now known to promote immunosenescence, it remains unclear how this process is linked with the telomere complex or telomerase activity. Indeed, enzymatic control of telomere length has been studied for many decades, but alternative roles of telomerase and potential influences on inflammatory responses are only now beginning to emerge. Crosstalk between these pathways may prove to be a key molecular mechanism of immunosenescence. Understanding how components of immune aging interact and modify host protection against pathogens and tumors will be essential for the design of new vaccines and therapies for a wide range of clinical scenarios.
Collapse
Affiliation(s)
- Shyam Sushama Jose
- Cellular and Molecular Immunoregulation Group (CMI), Center for Translational Medicine (CTM), International Clinical Research Center (ICRC), St. Anne’s University Hospital Brno, Brno, Czechia
- Department of Biology, Faculty of Medicine, Masaryk University, Czechia
| | - Kamila Bendickova
- Cellular and Molecular Immunoregulation Group (CMI), Center for Translational Medicine (CTM), International Clinical Research Center (ICRC), St. Anne’s University Hospital Brno, Brno, Czechia
| | - Tomas Kepak
- Pediatric Oncology Translational Research (POTR), International Clinical Research Center (ICRC), St. Anne’s University Hospital Brno, Brno, Czechia
- Pediatric Hematology and Oncology, University Hospital Brno, Brno, Czechia
| | - Zdenka Krenova
- Pediatric Oncology Translational Research (POTR), International Clinical Research Center (ICRC), St. Anne’s University Hospital Brno, Brno, Czechia
- Pediatric Hematology and Oncology, University Hospital Brno, Brno, Czechia
| | - Jan Fric
- Cellular and Molecular Immunoregulation Group (CMI), Center for Translational Medicine (CTM), International Clinical Research Center (ICRC), St. Anne’s University Hospital Brno, Brno, Czechia
| |
Collapse
|
39
|
Sun YY, Li XF, Meng XM, Huang C, Zhang L, Li J. Macrophage Phenotype in Liver Injury and Repair. Scand J Immunol 2017; 85:166-174. [PMID: 27491503 DOI: 10.1111/sji.12468] [Citation(s) in RCA: 69] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2016] [Accepted: 07/19/2016] [Indexed: 12/14/2022]
Abstract
Macrophages hold a critical position in the pathogenesis of liver injury and repair, in which their infiltrations is regarded as a main feature for both acute and chronic liver diseases. It is noted that, based on the distinct phenotypes and origins, hepatic macrophages are capable of clearing pathogens, promoting/or inhibiting liver inflammation, while regulating liver fibrosis and fibrolysis through interplaying with hepatocytes and hepatic stellate cells (HSC) via releasing different types of pro- or anti-inflammatory cytokines and growth factors. Macrophages are typically categorized into M1 or M2 phenotypes by adapting to local microenvironment during the progression of liver injury. In most occasions, M1 macrophages play a pro-inflammatory role in liver injury, while M2 macrophages exert an anti-inflammatory or pro-fibrotic role during liver repair and fibrosis. In this review, we focused on the up-to-date information about the phenotypic and functional plasticity of the macrophages and discussed the detailed mechanisms through which the phenotypes and functions of macrophages are regulated in different stages of liver injury and repair. Moreover, their roles in determining the fate of liver diseases were also summarized. Finally, the macrophage-targeted therapies against liver diseases were also be evaluated.
Collapse
Affiliation(s)
- Y-Y Sun
- School of Pharmacy, Anhui Key Laboratory of Bioactivity of Natural Products, Anhui Medical University, Hefei, China.,Institute for Liver Diseases of Anhui Medical University (AMU), Anhui Medical University, Hefei, China.,Anhui Institute of Innovative Drugs, Hefei, China
| | - X-F Li
- School of Pharmacy, Anhui Key Laboratory of Bioactivity of Natural Products, Anhui Medical University, Hefei, China.,Institute for Liver Diseases of Anhui Medical University (AMU), Anhui Medical University, Hefei, China.,Anhui Institute of Innovative Drugs, Hefei, China
| | - X-M Meng
- School of Pharmacy, Anhui Key Laboratory of Bioactivity of Natural Products, Anhui Medical University, Hefei, China.,Institute for Liver Diseases of Anhui Medical University (AMU), Anhui Medical University, Hefei, China.,Anhui Institute of Innovative Drugs, Hefei, China
| | - C Huang
- School of Pharmacy, Anhui Key Laboratory of Bioactivity of Natural Products, Anhui Medical University, Hefei, China.,Institute for Liver Diseases of Anhui Medical University (AMU), Anhui Medical University, Hefei, China.,Anhui Institute of Innovative Drugs, Hefei, China
| | - L Zhang
- School of Pharmacy, Anhui Key Laboratory of Bioactivity of Natural Products, Anhui Medical University, Hefei, China.,Institute for Liver Diseases of Anhui Medical University (AMU), Anhui Medical University, Hefei, China.,Anhui Institute of Innovative Drugs, Hefei, China
| | - J Li
- School of Pharmacy, Anhui Key Laboratory of Bioactivity of Natural Products, Anhui Medical University, Hefei, China.,Institute for Liver Diseases of Anhui Medical University (AMU), Anhui Medical University, Hefei, China.,Anhui Institute of Innovative Drugs, Hefei, China
| |
Collapse
|
40
|
The role of PTEN in regulation of hepatic macrophages activation and function in progression and reversal of liver fibrosis. Toxicol Appl Pharmacol 2017; 317:51-62. [PMID: 28095306 DOI: 10.1016/j.taap.2017.01.005] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2016] [Revised: 12/02/2016] [Accepted: 01/12/2017] [Indexed: 12/25/2022]
Abstract
Activation of Kupffer cells (KCs) plays a pivotal role in the pathogenesis of liver fibrosis. The progression and reversal of CCl4-induced mouse liver fibrosis showed a mixed induction of hepatic classical (M1) and alternative (M2) macrophage markers. Although the role of phosphatase and tensin homolog deleted on chromosome 10 (PTEN) in modulating myeloid cell activation has recently been identified, its function in macrophage activation during hepatic fibrosis remains to be fully appreciated. In our study, PTEN expression of KCs was remarkably decreased in CCl4-induced mice but increased to a near-normal level in reversed mice. Moreover, PTEN was significantly decreased in IL4-induced RAW 264.7 cells in vitro and lower expression of PTEN was observed in M2 macrophages in vivo. In addition, loss- and gain-of-function studies suggested that PTEN regulates M2 macrophages polarization via activation of PI3K/Akt/STAT6 signaling, but had a limited effect on M1 macrophages polarization in vitro. Additionally, Ly294002, a chemical inhibitor of PI3K/Akt, could dramatically down-regulate the hallmarks of M2 macrophages. In conclusion, PTEN mediates macrophages activation by PI3K/Akt/STAT6 signaling pathway, which provides novel compelling evidences on the potential of PTEN in liver injury and opens new cellular target for the pharmacological therapy of liver fibrosis.
Collapse
|
41
|
Zeng T, Zhang CL, Xiao M, Yang R, Xie KQ. Critical Roles of Kupffer Cells in the Pathogenesis of Alcoholic Liver Disease: From Basic Science to Clinical Trials. Front Immunol 2016; 7:538. [PMID: 27965666 PMCID: PMC5126119 DOI: 10.3389/fimmu.2016.00538] [Citation(s) in RCA: 89] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2016] [Accepted: 11/15/2016] [Indexed: 12/12/2022] Open
Abstract
Alcoholic liver disease (ALD) encompasses a spectrum of liver injury ranging from steatosis to steatohepatitis, fibrosis, and finally cirrhosis. Accumulating evidences have demonstrated that Kupffer cells (KCs) play critical roles in the pathogenesis of both chronic and acute ALD. It has become clear that alcohol exposure can result in increased hepatic translocation of gut-sourced endotoxin/lipopolysaccharide, which is a strong M1 polarization inducer of KCs. The activated KCs then produce a large amount of reactive oxygen species (ROS), pro-inflammatory cytokines, and chemokines, which finally lead to liver injury. The critical roles of KCs and related inflammatory cascade in the pathogenesis of ALD make it a promising target in pharmaceutical drug developments for ALD treatment. Several drugs (such as rifaximin, pentoxifylline, and infliximab) have been evaluated or are under evaluation for ALD treatment in randomized clinical trials. Furthermore, screening pharmacological regulators for KCs toward M2 polarization may provide additional therapeutic agents. The combination of these potentially therapeutic drugs with hepatoprotective agents (such as zinc, melatonin, and silymarin) may bring encouraging results.
Collapse
Affiliation(s)
- Tao Zeng
- Institute of Toxicology, School of Public Health, Shandong University , Jinan , China
| | - Cui-Li Zhang
- Institute of Toxicology, School of Public Health, Shandong University , Jinan , China
| | - Mo Xiao
- Institute of Toxicology, School of Public Health, Shandong University , Jinan , China
| | - Rui Yang
- Institute of Toxicology, School of Public Health, Shandong University , Jinan , China
| | - Ke-Qin Xie
- Institute of Toxicology, School of Public Health, Shandong University , Jinan , China
| |
Collapse
|
42
|
Xie J, Wu X, Zhou Q, Yang Y, Tian Y, Huang C, Meng X, Li J. PICK1 confers anti-inflammatory effects in acute liver injury via suppressing M1 macrophage polarization. Biochimie 2016; 127:121-32. [PMID: 27157267 DOI: 10.1016/j.biochi.2016.05.002] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2016] [Accepted: 05/02/2016] [Indexed: 12/11/2022]
Abstract
Protein interacting with C kinase 1 (PICK1) is a scaffolding protein mainly implicated in neurological diseases, however, the function of PICK1 in acute liver injury (ALI) remains unknown. Our study found a dramatical decrease in mRNA and protein levels of PICK1 in liver tissues and isolated Kupffer cells (KCs) from the liver in mice with ALI. Furthermore, pretreatment the mice with ALI with FSC-231, a pharmacological inhibitor of PICK1, could significantly augment inflammatory response. Furthermore, in vitro studies showed that both lipopolysaccharide (LPS) and interferon gamma (IFN-γ) significantly reduced the expression of PICK1, while IL-4 elevated its expression in RAW 264.7 cells. Additionally, over-expression of PICK1 inhibited the expression of M1 biomarkers by suppressing NF-κB activity, and enhanced the expression of M2 biomarkers by promoting STAT6 activity. In contrast, knockdown of PICK1 or FSC-231 pretreatment promoted M1 polarization and suppressed M2 polarization. Besides, caveolin-1 was identified as a potential target gene controlled by PICK1 in RAW 264.7 cells. Mechanistic investigation revealed a dual role of PICK1 in regulating macrophage polarization and implied PICK1 as a potential therapeutic target in ALI.
Collapse
Affiliation(s)
- Juan Xie
- School of Pharmacy, Anhui Medical University, Meishan Road, Hefei, 230032, China; Institute for Liver Diseases of Anhui Medical University (AMU), China; Anhui Key Laboratory of Bioactivity of Natural Products, Anhui Medical University, Hefei, 230032, China
| | - Xiaoqin Wu
- School of Pharmacy, Anhui Medical University, Meishan Road, Hefei, 230032, China; Institute for Liver Diseases of Anhui Medical University (AMU), China; Anhui Key Laboratory of Bioactivity of Natural Products, Anhui Medical University, Hefei, 230032, China
| | - Qun Zhou
- School of Pharmacy, Anhui Medical University, Meishan Road, Hefei, 230032, China; Institute for Liver Diseases of Anhui Medical University (AMU), China; Anhui Key Laboratory of Bioactivity of Natural Products, Anhui Medical University, Hefei, 230032, China
| | - Yang Yang
- School of Pharmacy, Anhui Medical University, Meishan Road, Hefei, 230032, China; Institute for Liver Diseases of Anhui Medical University (AMU), China; Anhui Key Laboratory of Bioactivity of Natural Products, Anhui Medical University, Hefei, 230032, China
| | - Yuanyao Tian
- School of Pharmacy, Anhui Medical University, Meishan Road, Hefei, 230032, China; Institute for Liver Diseases of Anhui Medical University (AMU), China; Anhui Key Laboratory of Bioactivity of Natural Products, Anhui Medical University, Hefei, 230032, China
| | - Cheng Huang
- School of Pharmacy, Anhui Medical University, Meishan Road, Hefei, 230032, China; Institute for Liver Diseases of Anhui Medical University (AMU), China; Anhui Key Laboratory of Bioactivity of Natural Products, Anhui Medical University, Hefei, 230032, China
| | - Xiaoming Meng
- School of Pharmacy, Anhui Medical University, Meishan Road, Hefei, 230032, China; Institute for Liver Diseases of Anhui Medical University (AMU), China; Anhui Key Laboratory of Bioactivity of Natural Products, Anhui Medical University, Hefei, 230032, China
| | - Jun Li
- School of Pharmacy, Anhui Medical University, Meishan Road, Hefei, 230032, China; Institute for Liver Diseases of Anhui Medical University (AMU), China; Anhui Key Laboratory of Bioactivity of Natural Products, Anhui Medical University, Hefei, 230032, China.
| |
Collapse
|
43
|
Wu XQ, Dai Y, Yang Y, Huang C, Meng XM, Wu BM, Li J. Emerging role of microRNAs in regulating macrophage activation and polarization in immune response and inflammation. Immunology 2016; 148:237-48. [PMID: 27005899 DOI: 10.1111/imm.12608] [Citation(s) in RCA: 79] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2016] [Revised: 03/05/2016] [Accepted: 03/16/2016] [Indexed: 02/06/2023] Open
Abstract
Diversity and plasticity are hallmarks of macrophages. Classically activated macrophages are considered to promote T helper type 1 responses and have strong microbicidal, pro-inflammatory activity, whereas alternatively activated macrophages are supposed to be associated with promotion of tissue remodelling and responses to anti-inflammatory reactions. Transformation of different macrophage phenotypes is reflected in their different, sometimes even opposite, roles in various diseases or inflammatory conditions. MicroRNAs (miRNAs) have emerged as critical regulators of macrophage polarization (MP). Several miRNAs are induced by Toll-like receptors signalling in macrophages and target the 3'-untranslated regions of mRNAs encoding key molecules involved in MP. Therefore, identification of miRNAs related to the dynamic changes of MP and understanding their functions in regulating this process are important for discussing the molecular basis of disease progression and developing novel miRNA-targeted therapeutic strategies. Here, we review the current knowledge of the role of miRNAs in MP with relevance to immune response and inflammation.
Collapse
Affiliation(s)
- Xiao-Qin Wu
- School of Pharmacy, Institute for Liver Diseases of Anhui Medical University, ILD-AMU, Key Laboratory of Anti-inflammatory and Immune Medicine, Anhui Medical University, Hefei, China
| | - Yao Dai
- School of Pharmacy, Institute for Liver Diseases of Anhui Medical University, ILD-AMU, Key Laboratory of Anti-inflammatory and Immune Medicine, Anhui Medical University, Hefei, China.,Department of Medicine, Central Arkansas Veterans Healthcare System and the University of Arkansas for Medical Sciences, Little Rock, AR, USA
| | - Yang Yang
- School of Pharmacy, Institute for Liver Diseases of Anhui Medical University, ILD-AMU, Key Laboratory of Anti-inflammatory and Immune Medicine, Anhui Medical University, Hefei, China
| | - Cheng Huang
- School of Pharmacy, Institute for Liver Diseases of Anhui Medical University, ILD-AMU, Key Laboratory of Anti-inflammatory and Immune Medicine, Anhui Medical University, Hefei, China
| | - Xiao-Ming Meng
- School of Pharmacy, Institute for Liver Diseases of Anhui Medical University, ILD-AMU, Key Laboratory of Anti-inflammatory and Immune Medicine, Anhui Medical University, Hefei, China
| | - Bao-Ming Wu
- School of Pharmacy, Institute for Liver Diseases of Anhui Medical University, ILD-AMU, Key Laboratory of Anti-inflammatory and Immune Medicine, Anhui Medical University, Hefei, China
| | - Jun Li
- School of Pharmacy, Institute for Liver Diseases of Anhui Medical University, ILD-AMU, Key Laboratory of Anti-inflammatory and Immune Medicine, Anhui Medical University, Hefei, China
| |
Collapse
|