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Chen L, Su H, Tao Z, Liang C, Liu Z, Dong Y, Zheng P, Liu Y. DUSP22 Ameliorates Endothelial-to-Mesenchymal Transition in HUVECs through Smad2/3 and MAPK Signaling Pathways. Cardiovasc Ther 2024; 2024:5583961. [PMID: 38495810 PMCID: PMC10942825 DOI: 10.1155/2024/5583961] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Revised: 01/27/2024] [Accepted: 02/01/2024] [Indexed: 03/19/2024] Open
Abstract
Endothelial-to-mesenchymal transition (EndMT) is the process by which endothelial cells lose their endothelial properties and acquire mesenchymal characteristics. Dual-specific protein phosphatase 22 (DUSP22) inactivates various protein kinases and transcription factors by dephosphorylating serine/threonine residues: hence, it plays a key role in many diseases. The aim of this study was to explore the functional role of DUSP22 in EndMT. In the transforming growth factor-β-induced EndMT model in human umbilical vein endothelial cells (HUVECs), we observed a downregulation of DUSP22 expression. This DUSP22 deficiency could aggravate EndMT. Conversely, the overexpression of DUSP22 could ameliorate EndMT. We used signaling pathway inhibitors to verify our results and found that DUSP22 could regulate EndMT through the smad2/3 and the mitogen-activated protein kinase (MAPK) signaling pathways. In summary, DUSP22 ameliorates EndMT in HUVECs in vitro through the smad2/3 and MAPK signaling pathways.
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Affiliation(s)
- Lu Chen
- Department of Cardiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Hongyu Su
- Department of Cardiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Zekai Tao
- Department of Cardiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Cui Liang
- Department of Cardiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Zhongzhao Liu
- Department of Cardiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Yiming Dong
- Department of Cardiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Peipei Zheng
- Department of Cardiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Yuan Liu
- Department of Cardiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
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Chen J, Kang G, Lei W, Li J, Wang H, Bi Y, Zhang W, Zhang L, Chai L, Wang P, Li X. DUSP22 suppresses tumor progression by directly dephosphorylating AKT in non-small cell lung cancer. Mol Carcinog 2024; 63:314-325. [PMID: 37937915 DOI: 10.1002/mc.23654] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2023] [Revised: 10/03/2023] [Accepted: 10/23/2023] [Indexed: 11/09/2023]
Abstract
Protein kinase B (AKT) plays a pivotal in regulating cell migration, proliferation, apoptosis, and survival, making it a prominent target for anticancer therapy. While the kinase activity of AKT has been extensively explored, its dephosphorylation have largely remained uncharted. Herein, we aimed to unravel the molecular mechanisms governing AKT dephosphorylation, with a specific emphasis on dual-specificity phosphatases DUSP22. Our investigation sought to shed light on the potential of DUSP22 as a potential therapeutic target for non-small cell lung cancer (NSCLC). To determine the expression level of DUSP22 in NSCLC cell lines, the gene expression profiling interactive analysis (GEPIA) and Oncomine database were searched. Additionally, the effect of DUSP22 on patient survival was analyzed with Kaplan-Meier database. Antitumor effects of DUSP22 were tested in A549 and H1299 cell lines. Experiments are based on: (1) cell viability determined by the cell counting kit-8 assay and colony-formation assay; (2) cell migratory ability assessed through the scratch assay and the transwell migration assay; (3) the mechanism behind the antitumor effects of DUSP22 dissected with co-immunoprecipitation (Co-IP) and in vitro kinase assays. Our study revealed a significant downregulation of DUSP22 in both NSCLC cell lines and tissues. Meanwhile, survival rate analysis results demonstrated that reduced DUSP22 expression was correlated with poorer overall survival in lung cancer patients. Moreover, DUSP22 exhibited an inhibitory effect on the cell viability and migratory capacity of A549 and H1299 cells. This inhibition was accompanied by the decrease in the phosphorylation of AKT and p38. Mechanistically, the phosphatase domain of DUSP22 interacted with AKT, resulting in the inhibition of AKT phosphorylation. This inhibitory effect was contingent upon the phosphatase activity of DUSP22. These findings provide compelling evidence that DUSP22 directly interacted with AKT, leading to the dephosphorylation of AKT at S473 and T308 residues, ultimately curbing the proliferation and migration of lung cancer cells. Additionally, our results also highlight a preclinical rationale for utilizing DUSP22 as a prognostic marker in NSCLC.
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Affiliation(s)
- Jingying Chen
- Joint National Laboratory for Antibody Drug Engineering, the First Affiliated Hospital, Henan University, Kaifeng, China
- Institute of Translational Medicine, Henan University, Kaifeng, China
| | - Guoqi Kang
- Joint National Laboratory for Antibody Drug Engineering, the First Affiliated Hospital, Henan University, Kaifeng, China
| | - Weidong Lei
- Joint National Laboratory for Antibody Drug Engineering, the First Affiliated Hospital, Henan University, Kaifeng, China
| | - Jizhuo Li
- Joint National Laboratory for Antibody Drug Engineering, the First Affiliated Hospital, Henan University, Kaifeng, China
| | - Huiling Wang
- Joint National Laboratory for Antibody Drug Engineering, the First Affiliated Hospital, Henan University, Kaifeng, China
| | - Yuanlin Bi
- Joint National Laboratory for Antibody Drug Engineering, the First Affiliated Hospital, Henan University, Kaifeng, China
| | - Wanru Zhang
- Joint National Laboratory for Antibody Drug Engineering, the First Affiliated Hospital, Henan University, Kaifeng, China
| | - Liming Zhang
- Joint National Laboratory for Antibody Drug Engineering, the First Affiliated Hospital, Henan University, Kaifeng, China
- Institute of Translational Medicine, Henan University, Kaifeng, China
| | - Lihui Chai
- Joint National Laboratory for Antibody Drug Engineering, the First Affiliated Hospital, Henan University, Kaifeng, China
- Institute of Translational Medicine, Henan University, Kaifeng, China
| | - Peiling Wang
- Joint National Laboratory for Antibody Drug Engineering, the First Affiliated Hospital, Henan University, Kaifeng, China
- Institute of Translational Medicine, Henan University, Kaifeng, China
| | - Xia Li
- Joint National Laboratory for Antibody Drug Engineering, the First Affiliated Hospital, Henan University, Kaifeng, China
- Institute of Translational Medicine, Henan University, Kaifeng, China
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Chen MH, Chuang HC, Yeh YC, Chou CT, Tan TH. Dual-specificity phosphatases 22-deficient T cells contribute to the pathogenesis of ankylosing spondylitis. BMC Med 2023; 21:46. [PMID: 36765305 PMCID: PMC9921195 DOI: 10.1186/s12916-023-02745-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/26/2022] [Accepted: 01/19/2023] [Indexed: 02/12/2023] Open
Abstract
BACKGROUND Dual-specificity phosphatases (DUSPs) can dephosphorylate both tyrosine and serine/threonine residues of their substrates and regulate T cell-mediated immunity and autoimmunity. The aim of this study was to investigate the potential roles of DUSPs in ankylosing spondylitis (AS). METHODS Sixty AS patients and 45 healthy controls were enrolled in this study. Associations of gene expression of 23 DUSPs in peripheral T cells with inflammatory cytokine gene expression and disease activity of AS were analyzed. Finally, we investigated whether the characteristics of AS are developed in DUSP-knockout mice. RESULTS The mRNA levels of DUSP4, DUSP5, DUSP6, DUSP7, and DUSP14 in peripheral T cells were significantly higher in AS group than those of healthy controls (all p < 0.05), while DUSP22 (also named JKAP) mRNA levels were significantly lower in AS group than healthy controls (p < 0.001). The mRNA levels of DUSP4, DUSP5, DUSP6, DUSP7, and DUSP14 in T cells were positively correlated with mRNA levels of tumor necrosis factor-α (TNF-α), whereas DUSP22 was inversely correlated (all p < 0.05). In addition, inverse correlations of DUSP22 gene expression in peripheral T cells with C-reactive protein, erythrocyte sedimentation rate, and Bath Ankylosing Spondylitis Disease Activity Index (BASDAI) were observed (all p < 0.05). More importantly, aged DUSP22 knockout mice spontaneously developed syndesmophyte formation, which was accompanied by an increase of TNF-α+, interleukin-17A+, and interferon-γ+ CD3+ T cells. CONCLUSIONS DUSP22 may play a crucial role in the pathogenesis and regulation of disease activity of AS.
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Affiliation(s)
- Ming-Han Chen
- Division of Allergy, Immunology & Rheumatology, Taipei Veterans General Hospital, Taipei, Taiwan.,Faculty of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Huai-Chia Chuang
- Immunology Research Center, National Health Research Institutes, Zhunan, Taiwan
| | - Yi-Chen Yeh
- Department of Pathology and Laboratory Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Chung-Tei Chou
- Division of Allergy, Immunology & Rheumatology, Taipei Veterans General Hospital, Taipei, Taiwan.
| | - Tse-Hua Tan
- Immunology Research Center, National Health Research Institutes, Zhunan, Taiwan. .,Department of Pathology & Immunology, Baylor College of Medicine, Houston, Texas, USA.
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Phillips RV, Wei L, Cardenas A, Hubbard AE, McHale CM, Vermeulen R, Wei H, Smith MT, Zhang L, Lan Q, Rothman N. Epigenome-wide association studies of occupational exposure to benzene and formaldehyde. Epigenetics 2022; 17:2259-2277. [PMID: 36017556 PMCID: PMC9665125 DOI: 10.1080/15592294.2022.2115604] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Revised: 08/04/2022] [Accepted: 08/17/2022] [Indexed: 11/03/2022] Open
Abstract
Sufficient evidence supports a relationship between certain myeloid neoplasms and exposure to benzene or formaldehyde. DNA methylation could underlie benzene- and formaldehyde-induced health outcomes, but data in exposed human populations are limited. We conducted two cross-sectional epigenome-wide association studies (EWAS), one in workers exposed to benzene and another in workers exposed to formaldehyde. Using HumanMethylation450 BeadChips, we investigated differences in blood cell DNA methylation among 50 benzene-exposed subjects and 48 controls, and among 31 formaldehyde-exposed subjects and 40 controls. We performed CpG-level and regional-level analyses. In the benzene EWAS, we found genome-wide significant alterations, i.e., FWER-controlled P-values <0.05, in the mean and variance of methylation at 22 and 318 CpG sites, respectively, and in mean methylation of a large genomic region. Pathway analysis of genes corresponding to benzene-associated differential methylation sites revealed an impact on the AMPK signalling pathway. In formaldehyde-exposed subjects compared to controls, 9 CpGs in the DUSP22 gene promoter had genome-wide significant decreased methylation variability and a large region of the HOXA5 promoter with 44 CpGs was hypomethylated. Our findings suggest that DNA methylation may contribute to the pathogenesis of diseases related to benzene and formaldehyde exposure. Aberrant expression and methylation of HOXA5 previously has been shown to be clinically significant in myeloid leukaemias. The tumour suppressor gene DUSP22 is a potential biomarker of exposure to formaldehyde, and irregularities have been associated with multiple exposures and diseases.
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Affiliation(s)
- Rachael V. Phillips
- School of Public Health, University of California at Berkeley, Berkeley, CA, USA
| | - Linqing Wei
- School of Public Health, University of California at Berkeley, Berkeley, CA, USA
| | - Andres Cardenas
- School of Public Health, University of California at Berkeley, Berkeley, CA, USA
| | - Alan E. Hubbard
- School of Public Health, University of California at Berkeley, Berkeley, CA, USA
| | - Cliona M. McHale
- School of Public Health, University of California at Berkeley, Berkeley, CA, USA
| | - Roel Vermeulen
- Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Universiteit Utrecht (UU), Utrecht, The Netherlands
| | - Hu Wei
- Division of Cancer Epidemiology and Genetics, Occupational and Environmental Epidemiology Branch, NCI, NIH, DHHS, Bethesda, MD, USA
| | - Martyn T. Smith
- School of Public Health, University of California at Berkeley, Berkeley, CA, USA
| | - Luoping Zhang
- School of Public Health, University of California at Berkeley, Berkeley, CA, USA
| | - Qing Lan
- Division of Cancer Epidemiology and Genetics, Occupational and Environmental Epidemiology Branch, NCI, NIH, DHHS, Bethesda, MD, USA
| | - Nathaniel Rothman
- Division of Cancer Epidemiology and Genetics, Occupational and Environmental Epidemiology Branch, NCI, NIH, DHHS, Bethesda, MD, USA
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Ge C, Tan J, Dai X, Kuang Q, Zhong S, Lai L, Yi C, Sun Y, Luo J, Zhang C, Zhu L, Wang B, Xu M. Hepatocyte phosphatase DUSP22 mitigates NASH-HCC progression by targeting FAK. Nat Commun 2022; 13:5945. [PMID: 36209205 DOI: 10.1038/s41467-022-33493-5] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Accepted: 09/21/2022] [Indexed: 11/08/2022] Open
Abstract
Nonalcoholic steatohepatitis (NASH), a common clinical disease, is becoming a leading cause of hepatocellular carcinoma (HCC). Dual specificity phosphatase 22 (DUSP22, also known as JKAP or JSP-1) expressed in numerous tissues plays essential biological functions in immune responses and tumor growth. However, the effects of DUSP22 on NASH still remain unknown. Here, we find a significant decrease of DUSP22 expression in human and murine fatty liver, which is mediated by reactive oxygen species (ROS) generation. Hepatic-specific DUSP22 deletion particularly exacerbates lipid deposition, inflammatory response and fibrosis in liver, facilitating NASH and non-alcoholic fatty liver disease (NAFLD)-associated HCC progression. In contrast, transgenic over-expression, lentivirus or adeno-associated virus (AAV)-mediated DUSP22 gene therapy substantially inhibit NASH-related phenotypes and HCC development in mice. We provide mechanistic evidence that DUSP22 directly interacts with focal adhesion kinase (FAK) and restrains its phosphorylation at Tyr397 (Y397) and Y576 + Y577 residues, subsequently prohibiting downstream activation of extracellular signal-regulated kinase 1/2 (ERK1/2) and nuclear factor-κB (NF-κB) cascades. The binding of DUSP22 to FAK and the dephosphorylation of FAK are indispensable for DUSP22-meliorated NASH progression. Collectively, our findings identify DUSP22 as a key suppressor of NASH-HCC, and underscore the DUSP22-FAK axis as a promising therapeutic target for treatment of the disease.
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Qian C, Chen J, Xu X, Liu Q, Gu M, Lu S, Bai H, Wang Q, Xue M. Measurement of synovium and serum dual specificity phosphatase 22 level: Their inter-correlation and potency as biomarkers in rheumatoid arthritis. J Clin Lab Anal 2021; 36:e24111. [PMID: 34811816 PMCID: PMC8761394 DOI: 10.1002/jcla.24111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2021] [Revised: 10/17/2021] [Accepted: 10/31/2021] [Indexed: 11/06/2022] Open
Abstract
Background Dual specificity phosphatase 22 (DUSP22), also named as Jun N‐terminal kinase pathway associated phosphatase recently, is reported to be closely engaged in immune and inflammation regulation. This study aimed to investigate the interaction between synovium DUSP22 and serum DUSP22 levels and to explore their correlation with rheumatoid arthritis (RA) risk, inflammation, and disease activity. Methods Synovium and serum samples from 42 RA patients with knee involvement underwent arthroscopy, and 20 knee trauma patients were collected. Besides, serum samples from 40 healthy controls were also obtained. Synovium DUSP22 expression was detected by reverse transcription quantitative polymerase chain reaction, while serum DUSP22 level was detected by enzyme‐linked immunosorbent assay. Results Synovium DUSP22 level was greatly decreased in RA patients compared to trauma controls (p < 0.001), and it was negatively correlated with tender joint count (TJC) (r = −0.318, p = 0.040), C‐reactive protein (CRP) (r = −0.330, p = 0.033), and Lysholm score (r = −0.423, p = 0.005) in RA patients. Serum DUSP22 level was lowest in RA patients, followed by trauma controls, then highest in healthy controls (p < 0.001). Serum DUSP22 level was negatively associated with TJC (r = −0.438, p = 0.004), swollen joint count (SJC) (r = −0.372, p = 0.015), CRP (r = −0.391, p = 0.011), and disease activity score in 28 joints (DAS28ESR) score (r = −0.406, p = 0.008), and it increased after treatment (p = 0.001) in RA patients. In addition, serum DUSP22 level positively related to synovium DUSP22 level in RA patients (r = 0.394, p = 0.010). Conclusion Synovium and serum DUSP22 are intercorrelated and insufficiently expressed in RA patients; meanwhile, their deficiency correlates with increased systemic inflammation, disease activity, and joint dysfunction.
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Affiliation(s)
- Chen Qian
- Department of Clinical Laboratory, Xishan People's Hospital of Wuxi City, Wuxi, China
| | - Jie Chen
- Department of Orthopedics, Huashan Hospital, Fudan University, Shanghai, China
| | - Xiaopeng Xu
- Department of Clinical Laboratory, Xishan People's Hospital of Wuxi City, Wuxi, China
| | - Qingyang Liu
- Department of Clinical Laboratory, Wuxi 9th People's Hospital, Wuxi 9th Affiliated Hospital of Soochow University, Wuxi, China
| | - Minhong Gu
- Department of Clinical Laboratory, Xishan People's Hospital of Wuxi City, Wuxi, China
| | - Sheng Lu
- Department of Clinical Laboratory, Xishan People's Hospital of Wuxi City, Wuxi, China
| | - Hongxia Bai
- Department of Clinical Laboratory, Xishan People's Hospital of Wuxi City, Wuxi, China
| | - Qiubo Wang
- Department of Clinical Laboratory, Wuxi 9th People's Hospital, Wuxi 9th Affiliated Hospital of Soochow University, Wuxi, China
| | - Mingyu Xue
- Department of Clinical Orthopaedics, Wuxi 9th People's Hospital, Wuxi 9th Affiliated Hospital of Soochow University, Wuxi, China
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Abstract
The regulation of aromatase, an enzyme involved in the biosynthesis of estrogen in normal and cancer cells, has been associated with growth factor signaling and immune response modulation. The tissue-specific regulatory roles of these factors are of particular importance as local aromatase expression is strongly linked to cancer development/progression and disease outcomes in patients. Therefore, aromatase has become a chemotherapeutic target and aromatase inhibitors (AIs) are used in the clinic for treating hormone-dependent cancers. Although AIs have shown promising results in the treatment of cancers, the emerging increase in AI-resistance necessitates the development of new and improved targeted therapies. This review discusses the role of tumor and stromal-derived growth factors and immune cell modulators in regulating aromatase. Current single-agent and combination therapies with or without AIs targeting growth factors and immune checkpoints are also discussed. This review highlights recent studies that show new connections between growth factors, mediators of immune response, and aromatase regulation.
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Affiliation(s)
- Deborah Molehin
- Department of Immunology & Molecular Microbiology, Texas Tech University Health Sciences Center, Lubbock, TX, USA
| | - Fahmida Rasha
- Department of Immunology & Molecular Microbiology, Texas Tech University Health Sciences Center, Lubbock, TX, USA
| | | | - Kevin Pruitt
- Department of Immunology & Molecular Microbiology, Texas Tech University Health Sciences Center, Lubbock, TX, USA. .,Department of Immunology & Molecular Microbiology, Texas Tech University Health Sciences Center, 3601 4th Street, Lubbock, TX, 79430-6591, USA.
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Chen T, Xu J, Fu W. EGFR/FOXO3A/LXR-α Axis Promotes Prostate Cancer Proliferation and Metastasis and Dual-Targeting LXR-α/EGFR Shows Synthetic Lethality. Front Oncol 2020; 10:1688. [PMID: 33224867 PMCID: PMC7667376 DOI: 10.3389/fonc.2020.01688] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Accepted: 07/29/2020] [Indexed: 01/08/2023] Open
Abstract
Prostate cancer is the second leading cause of cancer-related death in men. Early prostate cancer has a high 5-year survival rate. However, the five-year survival rate is low in progressive prostate cancer, which manifests as bone metastasis. The EGF receptor overexpression increases during disease progression and in the development of castration-resistant disease, and may be a potential therapeutic target. Liver X receptors (LXRs) are ligand-dependent nuclear receptor transcription factors and consist of two subtypes, LXR-α and LXR-β, which can inhibit tumor growth in various cancer cells. We revealed that LXR-α, but not LXR-β, was reduced in prostate cancer tissues compared with adjacent normal tissues. LXRs' agonist GW3965 enhanced the inhibitory action of LXR-α on the proliferation and metastasis of prostate cancer cells. Furthermore, our results support the notion that LXR-α is regulated by the EGFR/AKT/FOXO3A pathway. As an EGFR inhibitor, Afatinib could weaken AKT activation and increase the expression level of FOXO3A in prostate cancer. In addition, we indicated that the combination of Afatinib and GW3965 simultaneously increased and activated LXR-α, which led to an increase of tumor suppressors, and eventually inhibited tumor progression. Therefore, the combination of EGFR inhibitor and LXRs agonist may become a potential treatment strategy for prostate cancer, especially metastatic prostate cancer.
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Affiliation(s)
- Tingting Chen
- Department of Urology, The Second Affiliated Hospital, Third Military Medical University (Army Medical University), Chongqing, China
| | - Jie Xu
- Department of Urology, The Second Affiliated Hospital, Third Military Medical University (Army Medical University), Chongqing, China
| | - Weihua Fu
- Department of Urology, The Second Affiliated Hospital, Third Military Medical University (Army Medical University), Chongqing, China
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Yang CY, Chuang HC, Tsai CY, Xiao YZ, Yang JY, Huang RH, Shih YC, Tan TH. DUSP11 Attenuates Lipopolysaccharide-Induced Macrophage Activation by Targeting TAK1. J Immunol 2020; 205:1644-1652. [PMID: 32796023 DOI: 10.4049/jimmunol.2000334] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Accepted: 07/19/2020] [Indexed: 01/23/2023]
Abstract
Dual-specificity phosphatase 11 (DUSP11, also named as PIR1) is a member of the atypical DUSP protein tyrosine phosphatase family. DUSP11 is only known to be an RNA phosphatase that regulates noncoding RNA stability. To date, the role of DUSP11 in immune cell signaling and immune responses remains unknown. In this study, we generated and characterized the immune cell functions of DUSP11-deficient mice. We identified TGF-β-activated kinase 1 (TAK1) as a DUSP11-targeted protein. DUSP11 interacted directly with TAK1, and the DUSP11-TAK1 interaction was enhanced by LPS stimulation in bone marrow-derived macrophages. DUSP11 deficiency enhanced the LPS-induced TAK1 phosphorylation and cytokine production in bone marrow-derived macrophages. Furthermore, DUSP11-deficient mice were more susceptible to LPS-induced endotoxic shock. The LPS-induced serum levels of IL-1β, TNF-α, and IL-6 were significantly elevated in DUSP11-deficient mice compared with those of wild-type mice. The data indicate that DUSP11 inhibits LPS-induced macrophage activation by targeting TAK1.
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Affiliation(s)
- Chia-Yu Yang
- Immunology Research Center, National Health Research Institutes, 35053 Zhunan, Taiwan.,Department of Microbiology and Immunology, College of Medicine, Chang Gung University, 33302 Tao-Yuan, Taiwan; and
| | - Huai-Chia Chuang
- Immunology Research Center, National Health Research Institutes, 35053 Zhunan, Taiwan
| | - Ching-Yi Tsai
- Immunology Research Center, National Health Research Institutes, 35053 Zhunan, Taiwan
| | - Yu-Zhi Xiao
- Immunology Research Center, National Health Research Institutes, 35053 Zhunan, Taiwan
| | - Jhih-Yu Yang
- Immunology Research Center, National Health Research Institutes, 35053 Zhunan, Taiwan
| | - Rou-Huei Huang
- Immunology Research Center, National Health Research Institutes, 35053 Zhunan, Taiwan
| | - Ying-Chun Shih
- Immunology Research Center, National Health Research Institutes, 35053 Zhunan, Taiwan
| | - Tse-Hua Tan
- Immunology Research Center, National Health Research Institutes, 35053 Zhunan, Taiwan; .,Department of Pathology & Immunology, Baylor College of Medicine, Houston, TX 77030
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Chen L, Wang Y, Luan H, Ma G, Zhang H, Chen G. DUSP6 protects murine podocytes from high glucose‑induced inflammation and apoptosis. Mol Med Rep 2020; 22:2273-2282. [PMID: 32705203 PMCID: PMC7411363 DOI: 10.3892/mmr.2020.11317] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Accepted: 06/15/2020] [Indexed: 11/06/2022] Open
Abstract
Diabetic nephropathy (DN) is one of the most severe complications that can occur in patients with diabetes, and without effective and timely therapeutic intervention, can gradually progress to renal failure. Previous studies have focused on investigating the pathogenesis of DN; however, the role of dual‑specificity phosphatase 6 (DUSP6) in DN is not completely understood. Therefore, the present study aimed to investigate the role of dual‑specificity phosphatase 6 (DUSP6) in DN. DN model mice were established and the expression levels of DUSP6 in the kidney tissues and high glucose (HG)‑induced murine podocytes (MPC5 cells) were determined using immunohistochemistry, reverse transcription‑quantitative PCR and western blotting. In addition, the levels of reactive oxygen species (ROS) and inflammatory cytokines in MPC5 cells were analyzed using commercial assay kits or ELISA kits, respectively, and flow cytometric analysis was performed to analyze the rate of cell apoptosis. The present study indicated that DUSP6 expression levels were significantly decreased in DN model mice compared with control mice, and in HG‑induced MPC5 cells compared with normal glucose‑induced MPC5 cells. DUSP6 overexpression enhanced MPC5 cell viability and increased protein expression levels of cell markers, such as synaptopodin and nephrin, compared with the negative control group. DUSP6 overexpression also reduced the levels of ROS and inflammatory cytokines, including interleukin (IL)‑1β, IL‑6 and tumor necrosis factor‑α secreted by MPC5 cells under HG conditions. Moreover, compared with the HG group, cell apoptosis was inhibited by DUSP6 overexpression under HG conditions, which was further indicated by decreased expression levels of cleaved caspase‑3 and Bax. Thus, these findings indicated that DUSP6 mediated the protection against HG‑induced inflammatory response.
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Affiliation(s)
- Liqiang Chen
- School of Basic Medicine, Jiamusi University, Jiamusi, Heilongjiang 154002, P.R. China
| | - Yaokun Wang
- School of Basic Medicine, Jiamusi University, Jiamusi, Heilongjiang 154002, P.R. China
| | - Haiyan Luan
- School of Basic Medicine, Jiamusi University, Jiamusi, Heilongjiang 154002, P.R. China
| | - Guangyu Ma
- School of Basic Medicine, Jiamusi University, Jiamusi, Heilongjiang 154002, P.R. China
| | - Huiming Zhang
- School of Basic Medicine, Jiamusi University, Jiamusi, Heilongjiang 154002, P.R. China
| | - Guang Chen
- School of Basic Medicine, Jiamusi University, Jiamusi, Heilongjiang 154002, P.R. China
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Li H, Liu S, Yang X, Du Y, Luo J, Tan J, Sun Y. Cellular processes involved in lung cancer cells exposed to direct current electric field. Sci Rep 2020; 10:5289. [PMID: 32210363 DOI: 10.1038/s41598-020-62332-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Accepted: 03/06/2020] [Indexed: 11/08/2022] Open
Abstract
With the rapid breakthrough of electrochemical treatment of tumors, electric field (EF)-sensitive genes, previously rarely exploited, have become an emerging field recently. Here, we reported our work for the identification of EF-sensitive genes in lung cancer cells. The gene expression profile (GSE33845), in which the human lung cancer CL1-0 cells were treated with a direct current electric field (dcEF) (300 mV/mm) for 2 h, was retrieved from GEO database. Differentially expressed genes (DEGs) were acquired, followed by Gene Ontology (GO), Kyoto Encyclopedia of Genes and Genomes pathway (KEGG) and protein-protein interaction (PPI) analysis. Hub genes were acquired and analyzed by various tools including the Human Protein Atlas, Kaplan-Meier analysis, Cytoscape, FunRich, Oncomine and cBioPortal. Subsequently, three-dimensional protein models of hub genes were modeled by Modeller 9.20 and Rosetta 3.9. Finally, a 100 ns molecular dynamics simulation for each hub protein was performed with GROMACS 2018.2. A total of 257 DEGs were acquired and analyzed by GO, KEGG and PPI. Then, 10 hub genes were obtained, and the signal pathway analysis showed that two inflammatory pathways were activated: the FoxO signaling pathway and the AGE-RAGE signaling pathway. The molecular dynamic analysis including RMSD and the radius of gyration hinted that the 3D structures of hub proteins were built. Overall, our work identified EF-sensitive genes in lung cancer cells and identified that the inflammatory state of tumor cells may be involved in the feedback mechanism of lung cancer cells in response to electric field stimulation. In addition, qualified three-dimensional protein models of hub genes were also constructed, which will be helpful in understanding the complex effects of dcEF on human lung cancer CL1-0 cells.
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Chuang HC, Tan TH. MAP4K Family Kinases and DUSP Family Phosphatases in T-Cell Signaling and Systemic Lupus Erythematosus. Cells 2019; 8:cells8111433. [PMID: 31766293 PMCID: PMC6912701 DOI: 10.3390/cells8111433] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2019] [Revised: 11/08/2019] [Accepted: 11/11/2019] [Indexed: 12/21/2022] Open
Abstract
T cells play a critical role in the pathogenesis of systemic lupus erythematosus (SLE), which is a severe autoimmune disease. In the past 60 years, only one new therapeutic agent with limited efficacy has been approved for SLE treatment; therefore, the development of early diagnostic biomarkers and therapeutic targets for SLE is desirable. Mitogen-activated protein kinase kinase kinase kinases (MAP4Ks) and dual-specificity phosphatases (DUSPs) are regulators of MAP kinases. Several MAP4Ks and DUSPs are involved in T-cell signaling and autoimmune responses. HPK1 (MAP4K1), DUSP22 (JKAP), and DUSP14 are negative regulators of T-cell activation. Consistently, HPK1 and DUSP22 are downregulated in the T cells of human SLE patients. In contrast, MAP4K3 (GLK) is a positive regulator of T-cell signaling and T-cell-mediated immune responses. MAP4K3 overexpression-induced RORγt–AhR complex specifically controls interleukin 17A (IL-17A) production in T cells, leading to autoimmune responses. Consistently, MAP4K3 and the RORγt–AhR complex are overexpressed in the T cells of human SLE patients, as are DUSP4 and DUSP23. In addition, DUSPs are also involved in either human autoimmune diseases (DUSP2, DUSP7, DUSP10, and DUSP12) or T-cell activation (DUSP1, DUSP5, and DUSP14). In this review, we summarize the MAP4Ks and DUSPs that are potential biomarkers and/or therapeutic targets for SLE.
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