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Zhai N, Liu W, Jin CH, Ding Y, Sun L, Zhang D, Wang Z, Tang Y, Zhao W, LeGuern C, Mapara MY, Wang H, Yang YG. Lack of IFN-γ Receptor Signaling Inhibits Graft-versus-Host Disease by Potentiating Regulatory T Cell Expansion and Conversion. J Immunol 2023; 211:885-894. [PMID: 37486211 DOI: 10.4049/jimmunol.2200411] [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] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Accepted: 06/29/2023] [Indexed: 07/25/2023]
Abstract
IFN-γ is a pleiotropic cytokine that plays a controversial role in regulatory T cell (Treg) activity. In this study, we sought to understand how IFN-γ receptor (IFN-γR) signaling affects donor Tregs following allogeneic hematopoietic cell transplant (allo-HCT), a potentially curative therapy for leukemia. We show that IFN-γR signaling inhibits Treg expansion and conversion of conventional T cells (Tcons) to peripheral Tregs in both mice and humans. Mice receiving IFN-γR-deficient allo-HCT showed markedly reduced graft-versus-host disease (GVHD) and graft-versus-leukemia (GVL) effects, a trend associated with increased frequencies of Tregs, compared with recipients of wild-type allo-HCT. In mice receiving Treg-depleted allo-HCT, IFN-γR deficiency-induced peripheral Treg conversion was effective in preventing persistent GVHD while minimally affecting GVL effects. Thus, impairing IFN-γR signaling in Tcons may offer a promising strategy for achieving GVL effects without refractory GVHD. Similarly, in a human PBMC-induced xenogeneic GVHD model, significant inhibition of GVHD and an increase in donor Tregs were observed in mice cotransferred with human CD4 T cells that were deleted of IFN-γR1 by CRISPR/Cas9 technology, providing proof-of-concept support for using IFN-γR-deficient T cells in clinical allo-HCT.
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Affiliation(s)
- Naicui Zhai
- Key Laboratory of Organ Regeneration and Transplantation of the Ministry of Education, National-Local Joint Engineering Laboratory of Animal Models for Human Diseases, The First Hospital of Jilin University, Changchun, China
| | - Wentao Liu
- Key Laboratory of Organ Regeneration and Transplantation of the Ministry of Education, National-Local Joint Engineering Laboratory of Animal Models for Human Diseases, The First Hospital of Jilin University, Changchun, China
| | - Chun-Hui Jin
- Department of Pathology, The First Hospital of Jilin University, Changchun, China
| | - Yanan Ding
- Columbia Center for Translational Immunology, Columbia University Medical Center, New York, NY
| | - Liguang Sun
- Key Laboratory of Organ Regeneration and Transplantation of the Ministry of Education, National-Local Joint Engineering Laboratory of Animal Models for Human Diseases, The First Hospital of Jilin University, Changchun, China
| | - Donghui Zhang
- Key Laboratory of Organ Regeneration and Transplantation of the Ministry of Education, National-Local Joint Engineering Laboratory of Animal Models for Human Diseases, The First Hospital of Jilin University, Changchun, China
| | - Zhaowei Wang
- Key Laboratory of Organ Regeneration and Transplantation of the Ministry of Education, National-Local Joint Engineering Laboratory of Animal Models for Human Diseases, The First Hospital of Jilin University, Changchun, China
| | - Yang Tang
- Key Laboratory of Organ Regeneration and Transplantation of the Ministry of Education, National-Local Joint Engineering Laboratory of Animal Models for Human Diseases, The First Hospital of Jilin University, Changchun, China
| | - Wenjie Zhao
- Key Laboratory of Organ Regeneration and Transplantation of the Ministry of Education, National-Local Joint Engineering Laboratory of Animal Models for Human Diseases, The First Hospital of Jilin University, Changchun, China
| | - Christian LeGuern
- Center for Transplantation Sciences, Department of Surgery, Massachusetts General Hospital and Harvard Medical School, Boston, MA
| | - Markus Y Mapara
- Columbia Center for Translational Immunology, Columbia University Medical Center, New York, NY
| | - Hui Wang
- Columbia Center for Translational Immunology, Columbia University Medical Center, New York, NY
| | - Yong-Guang Yang
- Key Laboratory of Organ Regeneration and Transplantation of the Ministry of Education, National-Local Joint Engineering Laboratory of Animal Models for Human Diseases, The First Hospital of Jilin University, Changchun, China
- International Center of Future Science, Jilin University, Changchun, China
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2
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Zhao H, Zhou X, Yuan G, Hou Z, Sun H, Zhai N, Huang B, Li X. CDC6 is up-regulated and a poor prognostic signature in glioblastoma multiforme. Clin Transl Oncol 2020; 23:565-571. [PMID: 32661826 DOI: 10.1007/s12094-020-02449-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2020] [Accepted: 07/02/2020] [Indexed: 02/06/2023]
Abstract
PURPOSE Glioblastoma multiforme (GBM) represents the most common and the most malignant type of brain tumor. Cell division cycle 6 (CDC6), a gene associated with DNA replication initiation, has been proven to be associated with the prognosis of multiple tumors. In this study, we aim to explore the association between CDC6 expression and GBM carcinogenesis and prognosis. METHODS CDC6 expression in normal cells and GBM cells was explored by analyzing TCGA dataset, as well as by RT-PCR and western blot methods. Survival analysis was performed by the Kaplan-Meier method. Multivariate Cox-regression analysis was adopted to estimate the independence of CDC6 as a GBM prognostic factor. RESULTS AND CONCLUSIONS Elevated CDC6 levels in GBM tumor tissues compared with those in normal brain tissues were illustrated by analyzing the gene expression profiles from TCGA dataset, and confirmed by RT-PCR and western blot assays in GBM tumor and normal human astrocyte cell lines. Kaplan-Meier analysis indicated the negative influence of high CDC6 expression on GBM overall survival (OS) probability and days to progression (D2P) after initial treatment, but not on days to recurrence (D2R) after initial treatment. Multivariate Cox regression analysis showed CDC6 as an independent signature marker gene for GBM prognosis. In addition, the combination of CDC6 mRNA expression and CpG island methylator phenotype (CIMP) could sensitively predict 3-year OS and D2P. In conclusion, our study uncovered the role of CDC6 in GBM carcinogenesis and prognosis for the first time, which could shed new light on GBM diagnosis and treatment.
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Affiliation(s)
- H Zhao
- Department of Neurosurgery, Qilu Hospital, Cheeloo College of Medicine, Shandong University and Institute of Brain and Brain-Inspired Science, Shandong University, Jinan, 250012, Shandong, China.,Department of Neurosurgery, Zibo Central Hospital Affiliated to Shandong University, Zibo, 255036, Shandong, China
| | - X Zhou
- Department of Paediatric Neurology, Zibo Central Hospital Affiliated to Shandong University, Zibo, 255036, Shandong, China
| | - G Yuan
- Department of Neurosurgery, Zibo Central Hospital Affiliated to Shandong University, Zibo, 255036, Shandong, China
| | - Z Hou
- Department of Pathology, Zibo Central Hospital Affiliated to Shandong University, Zibo, 255036, Shandong, China
| | - H Sun
- Department of Neurosurgery, Zibo Central Hospital Affiliated to Shandong University, Zibo, 255036, Shandong, China
| | - N Zhai
- Department of Neurosurgery, Zibo Central Hospital Affiliated to Shandong University, Zibo, 255036, Shandong, China
| | - B Huang
- Department of Neurosurgery, Qilu Hospital, Cheeloo College of Medicine, Shandong University and Institute of Brain and Brain-Inspired Science, Shandong University, Jinan, 250012, Shandong, China.,Shandong Key Laboratory of Brain Function Remodeling, 250012, Jinan, China
| | - X Li
- Department of Neurosurgery, Qilu Hospital, Cheeloo College of Medicine, Shandong University and Institute of Brain and Brain-Inspired Science, Shandong University, Jinan, 250012, Shandong, China. .,Shandong Key Laboratory of Brain Function Remodeling, 250012, Jinan, China.
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3
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Li D, Zhai N, Xu S, Zhang M, Sun C, Li H. Study the effect of Li + on the ν 2/ν 3+ν 4 Fermi resonance of acetonitrile by Raman Spectroscopy. Spectrochim Acta A Mol Biomol Spectrosc 2019; 206:314-319. [PMID: 30125820 DOI: 10.1016/j.saa.2018.08.016] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2018] [Revised: 07/11/2018] [Accepted: 08/11/2018] [Indexed: 06/08/2023]
Abstract
Raman spectra of the solution of LiClO4 in acetonitrile (CH3CN) at different concentrations have been measured. With increasing the concentration of Li+, it was noted that several vibrational modes of CH3CN had significant changes in Raman shifts and some new Raman peaks emerged due to the CH3CN⋯Li+ complex formation. In addition, Fermi resonance phenomenon between the ν2' and (ν3 + ν4)' Raman bands of CH3CN⋯Li+ complex was observed. Based on the Bertran's equations, Fermi resonance parameters of free CH3CN and CH3CN⋯Li+ complex at different concentrations have been calculated, respectively. Compared the Fermi resonance coupling coefficients W of free CH3CN with CH3CN⋯Li+ complex at different concentrations, the free CH3CN had a little smaller value, which indicated that the ν2'/(ν3 + ν4)' Fermi resonance in CH3CN⋯Li+ complex was much stronger than the ν2/ν3 + ν4 Fermi resonance in CH3CN. From the detailed analysis of the effect of Li+ on the spectral features of CH3CN, the effect mechanism of Li+ coordination to CH3CN at the nitrogen of the CN group on the ν2/ν3 + ν4 Fermi resonance of CH3CN has been elucidated.
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Affiliation(s)
- Dongfei Li
- Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun 130103, Jilin Province, PR China; State Key Laboratory of Superhard Materials, Jilin University, Changchun 130012, Jilin Province, PR China; College of Physics, Jilin University, Changchun 130012, Jilin Province, PR China
| | - Naicui Zhai
- Institute of Translational Medicine, The First Hospital of Jilin University, Changchun 130061, Jilin Province, PR China
| | - Shichong Xu
- Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun 130103, Jilin Province, PR China
| | - Mingzhe Zhang
- State Key Laboratory of Superhard Materials, Jilin University, Changchun 130012, Jilin Province, PR China
| | - Chenglin Sun
- State Key Laboratory of Superhard Materials, Jilin University, Changchun 130012, Jilin Province, PR China; College of Physics, Jilin University, Changchun 130012, Jilin Province, PR China.
| | - Haibo Li
- Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun 130103, Jilin Province, PR China.
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Li H, Zhai N, Wang Z, Song H, Yang Y, Cui A, Li T, Wang G, Niu J, Crispe IN, Su L, Tu Z. Regulatory NK cells mediated between immunosuppressive monocytes and dysfunctional T cells in chronic HBV infection. Gut 2018; 67:2035-2044. [PMID: 28899983 PMCID: PMC6176520 DOI: 10.1136/gutjnl-2017-314098] [Citation(s) in RCA: 77] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/06/2017] [Revised: 07/05/2017] [Accepted: 07/24/2017] [Indexed: 12/13/2022]
Abstract
BACKGROUND AND AIMS HBV infection represents a major health problem worldwide, but the immunological mechanisms by which HBV causes chronic persistent infection remain only partly understood. Recently, cell subsets with suppressive features have been recognised among monocytes and natural killer (NK) cells. Here we examine the effects of HBV on monocytes and NK cells. METHODS Monocytes and NK cells derived from chronic HBV-infected patients and healthy controls were purified and characterised for phenotype, gene expression and cytokines secretion by flow cytometry, quantitative real-time (qRT)-PCR, ELISA and western blotting. Culture and coculture of monocytes and NK cells were used to determine NK cell activation, using intracellular cytokines staining. RESULTS In chronic HBV infection, monocytes express higher levels of PD-L1, HLA-E, interleukin (IL)-10 and TGF-β, and NK cells express higher levels of PD-1, CD94 and IL-10, compared with healthy individuals. HBV employs hepatitis B surface antigen (HBsAg) to induce suppressive monocytes with HLA-E, PD-L1, IL-10 and TGF-β expression via the MyD88/NFκB signalling pathway. HBV-treated monocytes induce NK cells to produce IL-10, via PD-L1 and HLA-E signals. Such NK cells inhibit autologous T cell activation. CONCLUSIONS Our findings reveal an immunosuppressive cascade, in which HBV generates suppressive monocytes, which initiate regulatory NK cells differentiation resulting in T cell inhibition.
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Affiliation(s)
- Haijun Li
- Institute of Translational Medicine, The First Hospital, Jilin University, Changchun, China
| | - Naicui Zhai
- Institute of Translational Medicine, The First Hospital, Jilin University, Changchun, China
| | - Zhongfeng Wang
- Institute of Liver Diseases, The First Hospital, Jilin University, Changchun, China
| | - Hongxiao Song
- Institute of Translational Medicine, The First Hospital, Jilin University, Changchun, China
| | - Yang Yang
- Institute of Translational Medicine, The First Hospital, Jilin University, Changchun, China
| | - An Cui
- Institute of Translational Medicine, The First Hospital, Jilin University, Changchun, China
| | - Tianyang Li
- Institute of Translational Medicine, The First Hospital, Jilin University, Changchun, China
| | - Guangyi Wang
- Department of Liver and Gall Surgery, The First Hospital, Jilin University, Changchun, China
| | - Junqi Niu
- Institute of Liver Diseases, The First Hospital, Jilin University, Changchun, China
| | - Ian Nicholas Crispe
- Institute of Translational Medicine, The First Hospital, Jilin University, Changchun, China
- Department of Pathology, University of Washington, Seattle, Washington, USA
| | - Lishan Su
- Institute of Translational Medicine, The First Hospital, Jilin University, Changchun, China
- Lineberger Comprehensive Cancer Center, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Zhengkun Tu
- Institute of Translational Medicine, The First Hospital, Jilin University, Changchun, China
- Institute of Liver Diseases, The First Hospital, Jilin University, Changchun, China
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Wang Y, Li Y, Li H, Song H, Zhai N, Lou L, Wang F, Zhang K, Bao W, Jin X, Su L, Tu Z. Brucella Dysregulates Monocytes and Inhibits Macrophage Polarization through LC3-Dependent Autophagy. Front Immunol 2017; 8:691. [PMID: 28659924 PMCID: PMC5467008 DOI: 10.3389/fimmu.2017.00691] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [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: 03/31/2017] [Accepted: 05/29/2017] [Indexed: 01/18/2023] Open
Abstract
Brucellosis is caused by infection with Brucella species and exhibits diverse clinical manifestations in infected humans. Monocytes and macrophages are not only the first line of defense against Brucella infection but also a main reservoir for Brucella. In the present study, we examined the effects of Brucella infection on human peripheral monocytes and monocyte-derived polarized macrophages. We showed that Brucella infection led to an increase in the proportion of CD14++CD16− monocytes and the expression of the autophagy-related protein LC3B, and the effects of Brucella-induced monocytes are inhibited after 6 weeks of antibiotic treatment. Additionally, the production of IL-1β, IL-6, IL-10, and TNF-α from monocytes in patients with brucellosis was suppressed through the LC3-dependent autophagy pathway during Brucella infection. Moreover, Brucella infection inhibited macrophage polarization. Consistently, the addition of 3-MA, an inhibitor of LC3-related autophagy, partially restored macrophage polarization. Intriguingly, we also found that the upregulation of LC3B expression by rapamycin and heat-killed Brucella in vitro inhibits M2 macrophage polarization, which can be reversed partially by 3-MA. Taken together, these findings reveal that Brucella dysregulates monocyte and macrophage polarization through LC3-dependent autophagy. Thus, targeting this pathway may lead to the development of new therapeutics against Brucellosis.
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Affiliation(s)
- Yang Wang
- Institute of Translational Medicine, The First Hospital of Jilin University, Changchun, China.,Department of Infectious Diseases, The First Hospital of Jilin University, Changchun, China
| | - Yuxiang Li
- Department of Infectious Diseases, The First Hospital of Jilin University, Changchun, China
| | - Haijun Li
- Institute of Translational Medicine, The First Hospital of Jilin University, Changchun, China
| | - Hongxiao Song
- Institute of Translational Medicine, The First Hospital of Jilin University, Changchun, China
| | - Naicui Zhai
- Institute of Translational Medicine, The First Hospital of Jilin University, Changchun, China
| | - Lixin Lou
- Department of Infectious Diseases, The First Hospital of Jilin University, Changchun, China
| | - Feng Wang
- Department of Infectious Diseases, The First Hospital of Jilin University, Changchun, China
| | - Kaiyu Zhang
- Department of Infectious Diseases, The First Hospital of Jilin University, Changchun, China
| | - Wanguo Bao
- Department of Infectious Diseases, The First Hospital of Jilin University, Changchun, China
| | - Xia Jin
- CAS Key Laboratory of Molecular Virology and Immunology, Institute Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai, China
| | - Lishan Su
- Institute of Translational Medicine, The First Hospital of Jilin University, Changchun, China.,Lineberger Comprehensive Cancer Center, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
| | - Zhengkun Tu
- Institute of Translational Medicine, The First Hospital of Jilin University, Changchun, China.,Department of Infectious Diseases, The First Hospital of Jilin University, Changchun, China
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Zhai N, Li H, Song H, Yang Y, Cui A, Li T, Niu J, Crispe IN, Su L, Tu Z. Hepatitis C Virus Induces MDSCs-Like Monocytes through TLR2/PI3K/AKT/STAT3 Signaling. PLoS One 2017; 12:e0170516. [PMID: 28114346 PMCID: PMC5256909 DOI: 10.1371/journal.pone.0170516] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2016] [Accepted: 12/14/2016] [Indexed: 12/26/2022] Open
Abstract
BACKGROUND AND AIMS Recent studies reveal the accumulation of myeloid derived suppressor cells (MDSCs) in human peripheral blood mononuclear cells (PBMCs) following HCV infection, which may facilitate and maintain HCV persistent infection. The mechanisms by which HCV induces MDSCs are poorly understood. In the present study, we investigated the mechanisms by which HCV induces MDSCs that lead to suppression of T cell proliferation and expansion of CD4+Foxp3+ regulatory T cells. METHODS Purified monocytes from healthy donors were cultured with HCV core protein (HCVc) or cell culture-derived HCV virions (HCVcc), and characterized the phenotype and function of these monocytes by flow cytometry, quantitative PCR, ELISA and western blot assays. In addition, peripheral blood from healthy donors and chronic HCV infected patients was collected, and MDSCs and CD4+CD25+CD127- regulatory T cells were analyzed by flow cytometry. RESULTS Both HCVc and HCVcc induced expression of IDO1, PD-L1 and IL-10, and significantly down-regulated HLA-DR expression in human monocytes. HCVc-treated monocytes triggered CD4+Foxp3+ Tregs expansion, and inhibited autologous CD4+ T cell activation in an IDO1-dependent fashion. Our results showed that HCV virions or HCV core proteins induced MDSC-like suppressive monocytes via the TLR2/PI3K/AKT/STAT3 signaling pathway. Monocytes derived from patients with chronic HCV infection displayed MDSCs characteristics. Moreover, the percentages of CD14+ MDSCs and CD4+CD25+CD127- Tregs in chronic HCV infected patients were significantly higher than healthy individuals, and the frequency of MDSCs correlated with CD4+CD25+CD127- Tregs. CONCLUSIONS HCV induced MDSC-like suppressive monocytes through TLR2/PI3K/AKT/STAT3 signaling pathway to induce CD4+Foxp3+ regulatory T cells and inhibit autologous CD4+ T cell activation. It will be of interest to test whether antagonizing suppressive functions of MDSCs could enhance immune responses and virus control in chronic HCV infection.
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Affiliation(s)
- Naicui Zhai
- Institute of Translational Medicine, the First Hospital of Jilin University, Changchun, China
| | - Haijun Li
- Institute of Translational Medicine, the First Hospital of Jilin University, Changchun, China
| | - Hongxiao Song
- Institute of Translational Medicine, the First Hospital of Jilin University, Changchun, China
| | - Yang Yang
- Institute of Translational Medicine, the First Hospital of Jilin University, Changchun, China
| | - An Cui
- Institute of Translational Medicine, the First Hospital of Jilin University, Changchun, China
| | - Tianyang Li
- Institute of Translational Medicine, the First Hospital of Jilin University, Changchun, China
| | - Junqi Niu
- Department of Hepatobiliary and Pancreatic Diseases, the First Hospital of Jilin University, Changchun, China
| | - Ian Nicholas Crispe
- Institute of Translational Medicine, the First Hospital of Jilin University, Changchun, China.,Department of Pathology, University of Washington, Seattle, Washington, United States of America
| | - Lishan Su
- Institute of Translational Medicine, the First Hospital of Jilin University, Changchun, China.,Lineberger Comprehensive Cancer Center, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
| | - Zhengkun Tu
- Institute of Translational Medicine, the First Hospital of Jilin University, Changchun, China.,Department of Hepatobiliary and Pancreatic Diseases, the First Hospital of Jilin University, Changchun, China
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7
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Pang X, Wang Z, Zhai N, Zhang Q, Song H, Zhang Y, Li T, Li H, Su L, Niu J, Tu Z. IL-10 plays a central regulatory role in the cytokines induced by hepatitis C virus core protein and polyinosinic acid:polycytodylic acid. Int Immunopharmacol 2016; 38:284-90. [PMID: 27337528 DOI: 10.1016/j.intimp.2016.06.013] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2016] [Revised: 06/15/2016] [Accepted: 06/17/2016] [Indexed: 12/24/2022]
Abstract
Hepatitis C virus (HCV) can cause persistent infection and chronic liver disease, and viral factors are involved in HCV persistence. HCV core protein, a highly conserved viral protein, not only elicits an immunoresponse, but it also regulates it. In addition, HCV core protein interacts with toll-like receptors (TLRs) on monocytes, inducing them to produce cytokines. Polyinosinic acid:polycytodylic acid (polyI:C) is a synthetic analogue of double-stranded RNA that binds to TLR3 and can induce secretion of type I IFN from monocytes. Cytokine response against HCV is likely to affect the natural course of infection as well as HCV persistence. However, possible effects of cytokines induced by HCV core protein and polyI:C remain to be investigated. In this study, we isolated CD14(+) monocytes from healthy donors, cultured them in the presence of HCV core protein and/or polyI:C, and characterized the induced cytokines, phenotypes and mechanisms. We demonstrated that HCV core protein- and polyI:C-stimulated CD14(+) monocytes secreted tumor necrosis factor-α (TNF-α), interleukin (IL)-1β, IL-10, and type I interferon (IFN). Importantly, TNF-α and IL-1β regulated the secretion of IL-10, which then influenced the expression of signal transducer and activator of transcription 1 (STAT1) and interferon regulatory factor 1 (IRF1) and subsequently the production of type I IFN. Interestingly, type I IFN also regulated the production of IL-10, which in turn inhibited the nuclear factor (NF)-κB subunit, reducing TNF-α and IL-1β levels. Therefore, IL-10 appears to play a central role in regulating the production of cytokines induced by HCV core protein and polyI:C.
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Affiliation(s)
- Xiaoli Pang
- Department of Hepatology, The First Hospital of Jilin University, Changchun, Jilin 130021, China; Department of Pediatric Gastroenterology, The First Hospital of Jilin University, Changchun, Jilin 130021, China
| | - Zhaoxia Wang
- Department of Pediatric Gastroenterology, The First Hospital of Jilin University, Changchun, Jilin 130021, China
| | - Naicui Zhai
- Translational Medicine Research Institute, The First Hospital of Jilin University, Changchun, Jilin 130021, China
| | - Qianqian Zhang
- Department of Hepatology, The First Hospital of Jilin University, Changchun, Jilin 130021, China
| | - Hongxiao Song
- Translational Medicine Research Institute, The First Hospital of Jilin University, Changchun, Jilin 130021, China
| | - Yujiao Zhang
- Department of Hepatology, The First Hospital of Jilin University, Changchun, Jilin 130021, China
| | - Tianyang Li
- Translational Medicine Research Institute, The First Hospital of Jilin University, Changchun, Jilin 130021, China
| | - Haijun Li
- Translational Medicine Research Institute, The First Hospital of Jilin University, Changchun, Jilin 130021, China
| | - Lishan Su
- Lineberger Comprehensive Cancer Center, The University of North Carolina at Chapel Hill, Chapel Hill, NC, United States; Department of Microbiology and Immunology, The University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
| | - Junqi Niu
- Department of Hepatology, The First Hospital of Jilin University, Changchun, Jilin 130021, China.
| | - Zhengkun Tu
- Translational Medicine Research Institute, The First Hospital of Jilin University, Changchun, Jilin 130021, China.
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Zhai N, Chi X, Li T, Song H, Li H, Jin X, Crispe IN, Su L, Niu J, Tu Z. Hepatitis C virus core protein triggers expansion and activation of CD4(+)CD25(+) regulatory T cells in chronic hepatitis C patients. Cell Mol Immunol 2014; 12:743-9. [PMID: 25531392 DOI: 10.1038/cmi.2014.119] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2014] [Revised: 11/06/2014] [Accepted: 11/07/2014] [Indexed: 01/08/2023] Open
Abstract
CD4(+)CD25(+)FoxP3(+) regulatory T cells (Tregs) are increased in patients with chronic hepatitis C, which may contribute to the sustained suppression of hepatitis C virus (HCV)-specific T-cell responses and viral persistence in HCV-infected individuals. We postulated that HCV core protein (HCVc) directly contributes to the expansion of Tregs in HCV-infected patients, and we provide evidence to support this hypothesis in the report. Peripheral blood mononuclear cells (PBMCs) and sera were collected from 87 treatment-naïve chronic HCV-infected patients, CD4(+)CD25(+) Tregs were measured by flow cytometry, and HCV RNA and HCVc levels were detected using qPCR and enzyme-linked immunosorbent assay (ELISA), respectively. CD4(+), CD8(+), CD4(+)CD25(+) and CD4(+)CD25(-) T cells were purified from healthy donors and cultured with recombinant HCVc and Toll-like receptor (TLR) ligands. Flow cytometry was used to analyze cell proliferation, and ELISA was performed to measure cytokine production. In the 87 chronic HCV-infected patients, HCVc showed a significant correlation with HCV RNA and CD4(+)CD25(+) Tregs. Mechanistic studies showed that HCVc, together with anti-CD3 antibody, augmented CD4(+)CD25(+) Treg proliferation, but inhibited CD4(+)CD25(-) T-cell proliferation and IFN-γ production, in a dose-dependent and Treg-dependent manner. Moreover, unlike the TLR3 ligand (poly I:C) and the TLR4 ligand (lipopolysaccharide, LPS), the TLR2 ligand (lipoteichoic acid, LTA) and HCVc both inhibited TCR-induced CD4(+) T-cell proliferation and IFN-γ secretion in a Treg-dependent manner. These data indicate that HCVc, like other TLR2 ligands, triggers CD4(+)CD25(+) Treg activation and expansion to inhibit host immune responses, which may play a critical role in viral persistence in HCV-infected patients.
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Affiliation(s)
- Naicui Zhai
- Institute of Translational Medicine, The First Hospital, Jilin University, Changchun, China
| | - Xiumei Chi
- Department of Hepatology, The First Hospital, Jilin University, Changchun, China
| | - Tianyang Li
- Institute of Translational Medicine, The First Hospital, Jilin University, Changchun, China
| | - Hongxiao Song
- Institute of Translational Medicine, The First Hospital, Jilin University, Changchun, China
| | - Haijun Li
- Institute of Translational Medicine, The First Hospital, Jilin University, Changchun, China
| | - Xia Jin
- Institute Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai, China
| | | | - Lishan Su
- Institute of Translational Medicine, The First Hospital, Jilin University, Changchun, China.,Lineberger Comprehensive Cancer Center, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Junqi Niu
- Department of Hepatology, The First Hospital, Jilin University, Changchun, China
| | - Zhengkun Tu
- Institute of Translational Medicine, The First Hospital, Jilin University, Changchun, China.,Department of Hepatology, The First Hospital, Jilin University, Changchun, China
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Huang Y, He L, Li G, Zhai N, Jiang H, Chen Y. Role of helicity of α-helical antimicrobial peptides to improve specificity. Protein Cell 2014; 5:631-42. [PMID: 24805306 PMCID: PMC4130925 DOI: 10.1007/s13238-014-0061-0] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2014] [Accepted: 04/03/2014] [Indexed: 11/26/2022] Open
Abstract
A major barrier to the use of antimicrobial peptides as antibiotics is the toxicity or ability to lyse eukaryotic cells. In this study, a 26-residue amphipathic α-helical antimicrobial peptide A12L/A20L (Ac-KWKSFLKTFKSLKKTVLHTLLKAISS-amide) was used as the framework to design a series of D- and L-diastereomeric peptides and study the relationships of helicity and biological activities of α-helical antimicrobial peptides. Peptide helicity was measured by circular dichroism spectroscopy and demonstrated to correlate with the hydrophobicity of peptides and the numbers of D-amino acid substitutions. Therapeutic index was used to evaluate the selectivity of peptides against prokaryotic cells. By introducing D-amino acids to replace the original L-amino acids on the non-polar face or the polar face of the helix, the hemolytic activity of peptide analogs have been significantly reduced. Compared to the parent peptide, the therapeutic indices were improved of 44-fold and 22-fold against Gram-negative and Gram-positive bacteria, respectively. In addition, D- and L-diastereomeric peptides exhibited lower interaction with zwitterionic eukaryotic membrane and showed the significant membrane damaging effect to bacterial cells. Helicity was proved to play a crucial role on peptide specificity and biological activities. By simply replacing the hydrophobic or the hydrophilic amino acid residues on the non-polar or the polar face of these amphipathic derivatives of the parent peptide with D-amino acids, we demonstrated that this method could have excellent potential for the rational design of antimicrobial peptides with enhanced specificity.
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Affiliation(s)
- Yibing Huang
- Key Laboratory for Molecular Enzymology and Engineering of the Ministry of Education, Jilin University, Changchun, 130012 China
- National Engineering Laboratory for AIDS Vaccine, Jilin University, Changchun, 130012 China
- School of Life Sciences, Jilin University, Changchun, 130012 China
| | - Liyan He
- Key Laboratory for Molecular Enzymology and Engineering of the Ministry of Education, Jilin University, Changchun, 130012 China
| | - Guirong Li
- Key Laboratory for Molecular Enzymology and Engineering of the Ministry of Education, Jilin University, Changchun, 130012 China
| | - Naicui Zhai
- Key Laboratory for Molecular Enzymology and Engineering of the Ministry of Education, Jilin University, Changchun, 130012 China
- The First Hospital, Jilin University, Changchun, 130021 China
| | - Hongyu Jiang
- The First Hospital, Jilin University, Changchun, 130021 China
| | - Yuxin Chen
- Key Laboratory for Molecular Enzymology and Engineering of the Ministry of Education, Jilin University, Changchun, 130012 China
- National Engineering Laboratory for AIDS Vaccine, Jilin University, Changchun, 130012 China
- School of Life Sciences, Jilin University, Changchun, 130012 China
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Shang YB, Zhai N, Li JP, Han SX, Ren QS, Song FJ, Chen HD. Study on association between polymorphism of HLA-DRB1 alleles and Behçet's disease. J Eur Acad Dermatol Venereol 2010; 23:1419-22. [PMID: 20205319 DOI: 10.1111/j.1468-3083.2009.03335.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
BACKGROUND Behçet's disease (BD) is known to be associated with human leucocyte antigen (HLA)-B*51 in many ethnic groups. However, the association of HLA class II gene with BD has been described to be different according to different countries and regions. OBJECTIVE This study aims to investigate the association between polymorphism of HLA-DRB1 alleles and BD. METHODS Forty patients with BD and 100 healthy controls were typed for HLA-DRB1 alleles by the LABType SSO method. RESULTS The frequency of HLA-DRB1*14 was significantly higher in BD patients than in controls (P < 0.05), while the frequency of HLA-DRB1*15 was markedly lower in BD patients (P < 0.05). Regarding clinical manifestations, the frequency of HLA-DRB1*15 was significantly decreased in BD patients with genital ulcerations compared with controls (P < 0.05); the frequency of HLA-DRB1*14 was significantly increased in BD patients with erythema nodosum-like lesions and in BD patients with folliculitis-like lesions when compared to controls (P < 0.05, respectively). Moreover, the frequency of HLA-DRB1*14 was significantly increased in BD patients under 20 years of age at the onset of disease (P < 0.01), while the frequency of HLA-DRB1*15 was significantly decreased in them (P < 0.05), compared with controls. CONCLUSION The results suggested that HLA-DRB1 alleles might play an important role in the onset and clinical manifestations of BD.
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Affiliation(s)
- Y-B Shang
- Department of Dermatology, No 1 Affiliated Hospital of China Medical University, Shenyang, China
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Gao XH, Winsey S, Li G, Barnardo M, Zhu XJ, Chen HD, Song F, Zhai N, Fuggle S, Wojnarowska F. HLA-DR and DQ polymorphisms in bullous pemphigoid from northern China. Clin Exp Dermatol 2002; 27:319-21. [PMID: 12139680 DOI: 10.1046/j.1365-2230.2002.01037.x] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Bullous pemphigoid (BP) is an autoimmune disease mediated by autoantibodies against hemidesmosome components. This study used PCR-sequence-specific primers to genotype polymorphisms in HLA-DR and DQ in 25 BP patients and 57 normal controls from northern China. We found lower frequencies of DRB1*08 (DR8) and DRB1*08/DQB1*06 (DR8/DQ6) haplotypes in BP patients than in controls (4.08% vs. 15.19% and 1.54% vs. 13.82%, respectively; P < 0.05), suggesting a protective role for DR8 and DR8/DQ6 haplotypes in BP patients from northern China; there were no statistical differences among other alleles tested. This result is strikingly different from previous reports that DQB1*0301 is associated with BP in Caucasian patients and DRB1*1101, DQB1*0302, DRB1*04/DQA1*0301/DQB1*0302 and DRB1*1101/ DQA1*0505/DQB1*0302 with Japanese BP patients. Ethnic differences in the polymorphic composition of the HLA-DR and DQ genes may influence genetic susceptibility to BP.
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Affiliation(s)
- X-H Gao
- Department of Dermatology, No. 1 Hospital of China Medical University, Shenyang, China
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Zhang Q, Zhai N, Geng L, Song F. DNA typing system for HLA-A2 alleles by polymerase chain reaction with sequence-specific primers. Chin Med Sci J 2001; 16:161-4. [PMID: 12899329] [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] [Subscribe] [Scholar Register] [Indexed: 03/04/2023]
Abstract
OBJECTIVE To establish a PCR-SSP method for discriminating as many HLA-A*02 alleles, which could easily be introduced into a routine laboratory. METHODS In this study we typed HLA-A*02 polymorphisms by a sequence-specific primer (SSP) method, which involved round 1 and round 2 PCR reactions to detect 17 HLA-A*02 alleles (they are HLA-A*0201-0217 alleles) covering exon 2 and exon 3. RESULTS We have found that DNA sample concentration and purity were the most important variable in determining the quality of the result. For identifying correct band size, the size marker used was important. We noticed that different PCR machines performed differently. By this method, we detected 20 HLA-A*02 positive genomic DNA samples and found 4 kinds of HLA-A*02 alleles. They were HLA-A*0201, 0203, 0206 and 0210. CONCLUSION The HLA-A*02 PCR-SSP method was proven to be a reliable and easily applicable typing method. Our results suggest that the SSP described here provides an optimal HLA-A*02 typing technique that may be useful in selecting donor-recipient pairs in bone marrow transplantation between unrelated individuals.
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Affiliation(s)
- Q Zhang
- Department of Dermatology, the 202 Hospital of PLA, Shenyang 110003
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Zhang Q, Zhai N, Feng H, Song F. The relationship of HLA-DRB1 * 0701 allele with the psoriasis vulgaris. Chin Med Sci J 1999; 14:70. [PMID: 12901611] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 03/04/2023]
Affiliation(s)
- Q Zhang
- Department of Dermatology, The 202th Hospital of PLA, Shenyang 110003
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Futaesaku Y, Zhai N, Ono M, Watanabe M, Zhao J, Zhang C, Li L, Shi X. Brain activity of a rat reflects apparently the stimulation of acupuncture. A radioautography using 2-deoxyglucose. Cell Mol Biol (Noisy-le-grand) 1995; 41:161-70. [PMID: 7773130] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
To confirm a relationship between the central nervous system and the acupuncture, the response was examined in the rat brain using radioautography with tritiated 2-deoxyglucose, after stimulation of some acupoints. Eight groups, of a total of 27 rats were submitted to acupuncture at 6 different acupoints (Zusanli, Renzhong, Tianshu, Shenmen, Neiguan, Yongquan) and control, with or without electric pulses or with anesthesia respectively, prior to the injection with isotopic deoxyglucose. A hundred twenty cryosections were cut from a freshly frozen brain and exposed on single-coated X-ray films. The results showed that the acupuncture on the four acupoints of Zusanli, Tianshu, Shenmen and Neiguan enhanced the activity of the neocortex, the limbic cortex and the thalamic nuclei in comparison with the control group. The acupoints on Renzhong and Yongquan depressed the activity on the thalamic nuclei and the midbrain. The anesthesia with pentobarbital concealed the most activity on the whole area of the brain, which hardly responded to any stimulation of acupuncture. These results lead to the suggestion that the brain may reflect the signals by the stimulation of acupuncture and change the activity depending upon each acupoint.
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Affiliation(s)
- Y Futaesaku
- Dept. of Histology and Analytical Morphology, School of Allied Health Science, Kitasato University, Kanagawa, Japan
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