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Ye M, Xie M, Zhu J, Wang C, Zhou R, Li X. LPS-Inducible lncRNA TMC3-AS1 Negatively Regulates the Expression of IL-10. Front Immunol 2020; 11:1418. [PMID: 32774335 PMCID: PMC7387720 DOI: 10.3389/fimmu.2020.01418] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Accepted: 06/02/2020] [Indexed: 12/29/2022] Open
Abstract
Long non-coding RNAs are essential regulators of the inflammatory response, especially for transcriptional regulation of inflammatory genes. It has been reported that the expression of transmembrane channel-like 3 (TMC3)–AS1 is increased following lipopolysaccharide stimulation. However, the potential function of TMC3-AS1 in immunity is largely unknown. Herein, we report a specific role for TMC3-AS1 in the regulation of inflammatory gene expression. TMC3-AS1 negatively regulates the expression of interleukin 10 (IL-10) in macrophage and intestinal epithelial cell lines. Mechanistically, TMC3-AS1 may interact with p65 in the nucleus, preventing p65 from binding to the κB consensus site within IL-10 promoter. These findings suggest that TMC3-AS1 may function as an important regulator in the innate immune response.
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Affiliation(s)
- Mengling Ye
- Hubei Province Key Laboratory of Allergy and Immunology, Wuhan University School of Basic Medical Sciences, Wuhan University, Wuhan, China
| | - Minghong Xie
- Institute of Materials Research and Engineering, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, China
| | - Jie Zhu
- Hubei Province Key Laboratory of Allergy and Immunology, Wuhan University School of Basic Medical Sciences, Wuhan University, Wuhan, China
| | - Chen Wang
- Hubei Province Key Laboratory of Allergy and Immunology, Wuhan University School of Basic Medical Sciences, Wuhan University, Wuhan, China
| | - Rui Zhou
- Hubei Province Key Laboratory of Allergy and Immunology, Wuhan University School of Basic Medical Sciences, Wuhan University, Wuhan, China
| | - Xiaoqing Li
- Center for Stem Cell Research and Application, Union Hospital, Tongji Medical School, Huazhong University of Science and Technology, Wuhan, China
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Ying Z, Shiue L, Park K, Kollet J, Bijani P, Goswami M, Duvic M, Ni X. Blood transcriptional profiling reveals IL-1 and integrin signaling pathways associated with clinical response to extracorporeal photopheresis in patients with leukemic cutaneous T-cell lymphoma. Oncotarget 2019; 10:3183-3197. [PMID: 31139332 PMCID: PMC6516711 DOI: 10.18632/oncotarget.26900] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Accepted: 04/14/2019] [Indexed: 01/07/2023] Open
Abstract
Extracorporeal photopheresis (ECP) is a frontline therapy for patients with leukemic cutaneous T-cell lymphoma (L-CTCL), but its mechanisms of action are not fully understood. This study was to explore the molecular mechanisms underlying clinical response versus non-response in patients with L-CTCL. We performed blood transcriptional profiling of ten L-CTCL patients at Day 2 and 1 month post- ECP compared to pre-ECP baseline using Agilent Whole Human Genome Microarray technology. Differentially expressed genes (DEGs) between five clinically-responsive patients and five clinically-resistant patients were cross-compared. Higher numbers of genes were modulated in responders than non-responders after ECP at both Day 2 and 1 month, with two thirds of DEGs down-regulated. The down-regulated DEGs at 1 month post-ECP were related to inflammatory, immune and/or stress responses, platelet functions, and chromatin remodeling. Upregulated DEGs were mainly related to functions of the nucleolus. Pathway analysis revealed that integrin and IL-1 signaling pathways were the top pathways affected in responders, which were minimally affected in non-responders. The top upstream transcription regulators affected were IL1B, EGR1, FAS, and TGFB1. Our results suggest that the modulation of cell adhesion and suppression of IL-1β induced inflammation may underlie the efficacy of ECP in L-CTCL.
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Affiliation(s)
- Zuolin Ying
- Department of Dermatology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Lisa Shiue
- Department of Dermatology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Katherine Park
- Department of Dermatology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Jutta Kollet
- Bioinformatics, Miltenyi Biotec GmbH, Beigisch Gladbach, 51429, Germany
| | - Pedram Bijani
- Department of Dermatology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Meghali Goswami
- Department of Dermatology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Madeleine Duvic
- Department of Dermatology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Xiao Ni
- Department of Dermatology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
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Zou Y, Uddin MM, Padmanabhan S, Zhu Y, Bu P, Vancura A, Vancurova I. The proto-oncogene Bcl3 induces immune checkpoint PD-L1 expression, mediating proliferation of ovarian cancer cells. J Biol Chem 2018; 293:15483-15496. [PMID: 30135206 DOI: 10.1074/jbc.ra118.004084] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2018] [Revised: 08/03/2018] [Indexed: 12/12/2022] Open
Abstract
The proto-oncogene Bcl3 induces survival and proliferation in cancer cells; however, its function and regulation in ovarian cancer (OC) remain unknown. Here, we show that Bcl3 expression is increased in human OC tissues. Surprisingly, however, we found that in addition to promoting survival, proliferation, and migration of OC cells, Bcl3 promotes both constitutive and interferon-γ (IFN)-induced expression of the immune checkpoint molecule PD-L1. The Bcl3 expression in OC cells is further increased by IFN, resulting in increased PD-L1 transcription. The mechanism consists of an IFN-induced, Bcl3- and p300-dependent PD-L1 promoter occupancy by Lys-314/315 acetylated p65 NF-κB. Blocking PD-L1 by neutralizing antibody reduces proliferation of OC cells overexpressing Bcl3, suggesting that the pro-proliferative effect of Bcl3 in OC cells is partly mediated by PD-L1. Together, this work identifies PD-L1 as a novel target of Bcl3, and links Bcl3 to IFNγ signaling and PD-L1-mediated immune escape.
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Affiliation(s)
- Yue Zou
- From the Department of Biological Sciences, St. John's University, New York, New York 11439
| | - Mohammad M Uddin
- From the Department of Biological Sciences, St. John's University, New York, New York 11439
| | - Sveta Padmanabhan
- From the Department of Biological Sciences, St. John's University, New York, New York 11439
| | - Yan Zhu
- From the Department of Biological Sciences, St. John's University, New York, New York 11439
| | - Pengli Bu
- From the Department of Biological Sciences, St. John's University, New York, New York 11439
| | - Ales Vancura
- From the Department of Biological Sciences, St. John's University, New York, New York 11439
| | - Ivana Vancurova
- From the Department of Biological Sciences, St. John's University, New York, New York 11439
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Jhou JP, Chen SJ, Huang HY, Lin WW, Huang DY, Tzeng SJ. Upregulation of FcγRIIB by resveratrol via NF-κB activation reduces B-cell numbers and ameliorates lupus. Exp Mol Med 2017; 49:e381. [PMID: 28960214 PMCID: PMC5628277 DOI: 10.1038/emm.2017.144] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2016] [Revised: 03/22/2017] [Accepted: 03/29/2017] [Indexed: 12/14/2022] Open
Abstract
Resveratrol, an anti-inflammatory agent, can inhibit pro-inflammatory mediators by activating Sirt1, which is a class III histone deacetylase. However, whether resveratrol can regulate inhibitory or anti-inflammatory molecules has been less studied. FcγRIIB, a receptor for IgG, is an essential inhibitory receptor of B cells for blocking B-cell receptor-mediated activation and for directly inducing apoptosis of B cells. Because mice deficient in either Sirt1 or FcγRIIB develop lupus-like diseases, we investigated whether resveratrol can alleviate lupus through FcγRIIB. We found that resveratrol enhanced the expression of FcγRIIB in B cells, resulting in a marked depletion of plasma cells in the spleen and notably in the bone marrow, thereby decreasing serum autoantibody titers in MRL/lpr mice. The upregulation of FcγRIIB by resveratrol involved an increase of Sirt1 protein and deacetylation of p65 NF-κB (K310). Moreover, increased binding of phosphor-p65 NF-κB (S536) but decreased association of acetylated p65 NF-κB (K310) and phosphor-p65 NF-κB (S468) to the −480 promoter region of Fcgr2b gene was responsible for the resveratrol-mediated enhancement of FcγRIIB gene transcription. Consequently, B cells, especially plasma cells, were considerably reduced in MRL/lpr mice, leading to improvement of nephritis and prolonged survival. Taken together, we provide evidence that pharmacological upregulation of FcγRIIB expression in B cells via resveratrol can selectively reduce B cells, decrease serum autoantibodies and ameliorate lupus nephritis. Our findings lead us to propose FcγRIIB as a new target for therapeutic exploitation, particularly for lupus patients whose FcγRIIB expression levels in B cells are downregulated.
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Affiliation(s)
- Jyun-Pei Jhou
- Department of Pharmacology, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Se-Jie Chen
- Department of Pharmacology, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Ho-Yin Huang
- Department of Pharmacology, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Wan-Wan Lin
- Department of Pharmacology, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Duen-Yi Huang
- Department of Pharmacology, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Shiang-Jong Tzeng
- Department of Pharmacology, College of Medicine, National Taiwan University, Taipei, Taiwan
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Zhang T, Bu P, Zeng J, Vancura A. Increased heme synthesis in yeast induces a metabolic switch from fermentation to respiration even under conditions of glucose repression. J Biol Chem 2017; 292:16942-16954. [PMID: 28830930 DOI: 10.1074/jbc.m117.790923] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2017] [Revised: 08/18/2017] [Indexed: 01/13/2023] Open
Abstract
Regulation of mitochondrial biogenesis and respiration is a complex process that involves several signaling pathways and transcription factors as well as communication between the nuclear and mitochondrial genomes. Under aerobic conditions, the budding yeast Saccharomyces cerevisiae metabolizes glucose predominantly by glycolysis and fermentation. We have recently shown that altered chromatin structure in yeast induces respiration by a mechanism that requires transport and metabolism of pyruvate in mitochondria. However, how pyruvate controls the transcriptional responses underlying the metabolic switch from fermentation to respiration is unknown. Here, we report that this pyruvate effect involves heme. We found that heme induces transcription of HAP4, the transcriptional activation subunit of the Hap2/3/4/5p complex, required for growth on nonfermentable carbon sources, in a Hap1p- and Hap2/3/4/5p-dependent manner. Increasing cellular heme levels by inactivating ROX1, which encodes a repressor of many hypoxic genes, or by overexpressing HEM3 or HEM12 induced respiration and elevated ATP levels. Increased heme synthesis, even under conditions of glucose repression, activated Hap1p and the Hap2/3/4/5p complex and induced transcription of HAP4 and genes required for the tricarboxylic acid (TCA) cycle, electron transport chain, and oxidative phosphorylation, leading to a switch from fermentation to respiration. Conversely, inhibiting metabolic flux into the TCA cycle reduced cellular heme levels and HAP4 transcription. Together, our results indicate that the glucose-mediated repression of respiration in budding yeast is at least partly due to the low cellular heme level.
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Affiliation(s)
- Tiantian Zhang
- From the Department of Biological Sciences, St. John's University, Queens, New York 11439
| | - Pengli Bu
- From the Department of Biological Sciences, St. John's University, Queens, New York 11439
| | - Joey Zeng
- From the Department of Biological Sciences, St. John's University, Queens, New York 11439
| | - Ales Vancura
- From the Department of Biological Sciences, St. John's University, Queens, New York 11439
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Wang W, Fu L, Li S, Xu Z, Qiu P, Xu TJ, Yang W, Zhang YB, Xu GM, Lu XD, Li X. Vitamin D insufficiency correlates with peripheral B10 cells in patients with pituitary tumours. Cell Biochem Funct 2017; 35:254-259. [PMID: 28749078 DOI: 10.1002/cbf.3270] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2016] [Revised: 04/06/2017] [Accepted: 05/20/2017] [Indexed: 01/03/2023]
Affiliation(s)
- Weimin Wang
- School of Medicine; Shandong University; Jinan China
- Departments of Neurosurgery and Surgery Room, Qingdao Municipal Hospital; Qingdao China
| | - Li Fu
- Departments of Neurosurgery and Surgery Room, Qingdao Municipal Hospital; Qingdao China
| | - Shengli Li
- Departments of Neurosurgery and Surgery Room, Qingdao Municipal Hospital; Qingdao China
| | - Zhiming Xu
- Departments of Neurosurgery and Surgery Room, Qingdao Municipal Hospital; Qingdao China
| | - Peng Qiu
- Department of Neurosurgery; Shandong Provincial Hospital affiliated to Shandong University; Jinan China
| | - Tong-Jiang Xu
- Department of Neurosurgery; Shandong Provincial Hospital affiliated to Shandong University; Jinan China
| | - Wei Yang
- Department of Neurosurgery; Shandong Provincial Hospital affiliated to Shandong University; Jinan China
| | - Yu-Bao Zhang
- Department of Neurosurgery; Shandong Provincial Hospital affiliated to Shandong University; Jinan China
| | - Guang-Ming Xu
- Department of Neurosurgery; Shandong Provincial Hospital affiliated to Shandong University; Jinan China
| | - Xiang-Dong Lu
- Department of Neurosurgery; Laiwu City People's Hospital; Laiwu China
| | - Xinggang Li
- Department of Neurosurgery; Qilu Hospital of Shandong University; Jinan China
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Dimethyl fumarate restores apoptosis sensitivity and inhibits tumor growth and metastasis in CTCL by targeting NF-κB. Blood 2016; 128:805-15. [PMID: 27268084 DOI: 10.1182/blood-2016-01-694117] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2016] [Accepted: 05/26/2016] [Indexed: 12/19/2022] Open
Abstract
Despite intensive efforts in recent years, a curative therapy for cutaneous T-cell lymphoma (CTCL) has not yet been developed. Therefore, the establishment of new therapeutic approaches with higher efficacy rates and milder side effects is strongly desired. A characteristic feature of the malignant T-cell population in CTCL is resistance toward cell death resulting from constitutive NF-κB activation. Therefore, NF-κB-dependent cell death resistance represents an interesting therapeutic target in CTCL because an NF-κB-directed therapy would leave bystander T cells widely unaffected. We investigated the effects of dimethyl fumarate (DMF) on CTCL cells in vitro and in vivo. DMF induced cell death in primary patient-derived CD4(+) cells and CTCL cell lines, but hardly in T cells from healthy donors. DMF-induced cell death was linked specifically to NF-κB inhibition. To study the impact of DMF in vivo, we developed 2 CTCL xenograft mouse models with different cutaneous localizations of the T-cell infiltrate. DMF treatment delayed the growth of CTCL tumors and prevented formation of distant metastases. In addition, DMF induced increased cell death in primary CTCL tumors and in liver metastases. In summary, DMF treatment represents a remarkable therapeutic option in CTCL because it restores CTCL apoptosis in vitro and in preclinical models in vivo and prevents spreading of the disease to distant sites. DMF treatment is of particular promise in CTCL because DMF is already in successful clinical use in the treatment of psoriasis and multiple sclerosis allowing fast translation into clinical studies in CTCL.
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Chang TP, Poltoratsky V, Vancurova I. Bortezomib inhibits expression of TGF-β1, IL-10, and CXCR4, resulting in decreased survival and migration of cutaneous T cell lymphoma cells. THE JOURNAL OF IMMUNOLOGY 2015; 194:2942-53. [PMID: 25681335 DOI: 10.4049/jimmunol.1402610] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Increased expression of the immunosuppressive cytokines, TGF-β1 and IL-10, is a hallmark of the advanced stages of cutaneous T cell lymphoma (CTCL), where it has been associated with suppressed immunity, increased susceptibility to infections, and diminished antitumor responses. Yet, little is known about the transcriptional regulation of TGF-β1 and IL-10 in CTCL, and about their function in regulating the CTCL cell responses. In this article, we show that TGF-β1 and IL-10 expression in CTCL cells is regulated by NF-κB and suppressed by bortezomib (BZ), which has shown promising results in the treatment of CTCL. However, although the TGF-β1 expression is IκBα dependent and is regulated by the canonical pathway, the IL-10 expression is IκBα independent, and its inhibition by BZ is associated with increased promoter recruitment of p52 that characterizes the noncanonical pathway. TGF-β1 suppression decreases CTCL cell viability and increases apoptosis, and adding exogenous TGF-β1 increases viability of BZ-treated CTCL cells, indicating TGF-β1 prosurvival function in CTCL cells. In addition, TGF-β1 suppression increases expression of the proinflammatory cytokines IL-8 and IL-17 in CTCL cells, suggesting that TGF-β1 also regulates the IL-8 and IL-17 expression. Importantly, our results demonstrate that BZ inhibits expression of the chemokine receptor CXCR4 in CTCL cells, resulting in their decreased migration, and that the CTCL cell migration is mediated by TGF-β1. These findings provide the first insights into the BZ-regulated TGF-β1 and IL-10 expression in CTCL cells, and indicate that TGF-β1 has a key role in regulating CTCL survival, inflammatory gene expression, and migration.
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Affiliation(s)
- Tzu-Pei Chang
- Department of Biological Sciences, St. John's University, New York, NY 11439; and
| | - Vladimir Poltoratsky
- Department of Pharmaceutical Sciences, St. John's University, New York, NY 11439
| | - Ivana Vancurova
- Department of Biological Sciences, St. John's University, New York, NY 11439; and
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