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Caprio F, Orefice G, Secondulfo F, Carone Fabiani F, Iervolino A, Capasso G, Simeoni M, Zacchia M, Trepiccione F, Capolongo G. Renal Cystinuria and Immune Cells (T Lymphocytes) Dysfunction: What We Know about? Nephron Clin Pract 2024:1-6. [PMID: 38657578 DOI: 10.1159/000538213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Accepted: 03/03/2024] [Indexed: 04/26/2024] Open
Abstract
INTRODUCTION Cystinuria (CYS) is the most common monogenic kidney stone disease. METHODS Starting from an unusual case of CYS associated to primary sclerosing cholangitis, inflammatory bowel disease (IBD), and autoimmune hepatitis in a young male, we carefully review the literature and propose here a working hypothesis regarding the potential risk of cystinuric patients to develop conditions due to immune system dysregulation. To corroborate this hypothesis, we retrospectively evaluate the frequency of dysimmunity in a monocentric cohort including 36 cystinuric patients compared to healthy and disease controls. RESULTS CYS patients have an increased prevalence of atopic disease compared to disease controls (p = 0.03) and 16.7% of CYS subjects were diagnosed with allergic disease to a variety of antigens. CONCLUSION Further studies are needed to define the relationship between proximal tubular transport defect of CYS and dysregulated immunity.
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Affiliation(s)
- Francesca Caprio
- Department of Translational Medical Science, University of Campania Luigi Vanvitelli, Naples, Italy,
| | - Giuseppe Orefice
- Department of Translational Medical Science, University of Campania Luigi Vanvitelli, Naples, Italy
| | - Floriana Secondulfo
- Department of Translational Medical Science, University of Campania Luigi Vanvitelli, Naples, Italy
| | - Filippo Carone Fabiani
- University Milano-Bicocca, Department of Economics Management and Statistics, Milan, Italy
| | - Anna Iervolino
- Department of Translational Medical Science, University of Campania Luigi Vanvitelli, Naples, Italy
| | - Giovambattista Capasso
- Department of Translational Medical Science, University of Campania Luigi Vanvitelli, Naples, Italy
- Biogem S.c.a.r.l., Ariano Irpino, Italy
| | - Mariadelina Simeoni
- Department of Translational Medical Science, University of Campania Luigi Vanvitelli, Naples, Italy
| | - Miriam Zacchia
- Department of Translational Medical Science, University of Campania Luigi Vanvitelli, Naples, Italy
| | - Francesco Trepiccione
- Department of Translational Medical Science, University of Campania Luigi Vanvitelli, Naples, Italy
- Biogem S.c.a.r.l., Ariano Irpino, Italy
| | - Giovanna Capolongo
- Department of Translational Medical Science, University of Campania Luigi Vanvitelli, Naples, Italy
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2
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Li Y, Xie HQ, Liu Y, Xu L, Zheng L, Yu S, Chen G, Ji J, Jiang S, Guo TL, Zhao B. Subacute effects of the chlorinated flame retardant dechlorane 602 on intestinal microenvironment in mice. ENVIRONMENT INTERNATIONAL 2022; 166:107394. [PMID: 35820366 DOI: 10.1016/j.envint.2022.107394] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Revised: 07/04/2022] [Accepted: 07/04/2022] [Indexed: 06/15/2023]
Abstract
BACKGROUND Chlorinated flame retardant Dechlorane 602 (Dec 602) has been detected in daily food, indicating that it may pose a risk to intestinal health. The intestinal microenvironment plays an important role in intestinal health. Intestinal microbiota and metabolites are two important factors for maintaining the microenvironment. However, little is known about the effects of Dec 602 on intestinal microbiota and metabolites. OBJECTIVES We aimed to probe the effects of Dec 602 on the intestine by revealing the changes that Dec 602 caused to the intestinal microbiota and metabolites. METHODS Adult female C57BL/6 mice were exposed to Dec 602 (low/high doses: 1.0/10.0 μg/kg body weight per day) orally for 7 consecutive days, and sacrificed after 7 days of recovery. The composition of colonic microbiota was measured by 16S rRNA gene sequencing, and the colonic metabolites were determined by LC-ESI-MS/MS. Finally, the effects of Dec 602 on the colon were validated by histopathological analysis. RESULTS The intestinal microbiota composition was altered toward a pro-inflammatory status after exposure to Dec 602. Dec 602 exposure also up-regulated oxidative metabolites (glutathione disulfide, taurine and retinoic acid) and pro-inflammatory metabolites (prostaglandin E2). On the other hand, antioxidative metabolites (s-adenosylmethionine and 11-cis-retinol) and anti-inflammatory metabolites (alpha-linolenic acid, eicosapentaenoic acid and docosahexaenoic acid) were down-regulated after exposure to Dec 602. Infiltration of lymphocytes in the colonic lamina propria was observed in the mice treated with Dec 602 for 7 days, and it was not recovered after another 7 days without further treatment. CONCLUSION Dec 602 interfered with the colonic microbiota and metabolome, and exhibited inflammatory features. Histopathological studies confirmed that Dec 602 exposure did induce colonic inflammation.
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Affiliation(s)
- Yunping Li
- School of Environment, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou, Zhejiang 310024, China; State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Heidi Qunhui Xie
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yin Liu
- School of Environment, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou, Zhejiang 310024, China
| | - Li Xu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Liping Zheng
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Shuyuan Yu
- Environment and Health Department, Shenzhen Center for Disease Control and Prevention, Shenzhen, Guangdong 518055, China
| | - Guomin Chen
- Environment and Health Department, Shenzhen Center for Disease Control and Prevention, Shenzhen, Guangdong 518055, China
| | - Jiajia Ji
- Environment and Health Department, Shenzhen Center for Disease Control and Prevention, Shenzhen, Guangdong 518055, China
| | - Shuai Jiang
- Environment and Health Department, Shenzhen Center for Disease Control and Prevention, Shenzhen, Guangdong 518055, China
| | - Tai L Guo
- Department of Veterinary Biomedical Sciences, University of Georgia, Athens, GA 30602, USA.
| | - Bin Zhao
- School of Environment, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou, Zhejiang 310024, China; State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
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3
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Engevik MA, Herrmann B, Ruan W, Engevik AC, Engevik KA, Ihekweazu F, Shi Z, Luck B, Chang-Graham AL, Esparza M, Venable S, Horvath TD, Haidacher SJ, Hoch KM, Haag AM, Schady DA, Hyser JM, Spinler JK, Versalovic J. Bifidobacterium dentium-derived y-glutamylcysteine suppresses ER-mediated goblet cell stress and reduces TNBS-driven colonic inflammation. Gut Microbes 2021; 13:1-21. [PMID: 33985416 PMCID: PMC8128206 DOI: 10.1080/19490976.2021.1902717] [Citation(s) in RCA: 46] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
Endoplasmic reticulum (ER) stress compromises the secretion of MUC2 from goblet cells and has been linked with inflammatory bowel disease (IBD). Although Bifidobacterium can beneficially modulate mucin production, little work has been done investigating the effects of Bifidobacterium on goblet cell ER stress. We hypothesized that secreted factors from Bifidobacterium dentium downregulate ER stress genes and modulates the unfolded protein response (UPR) to promote MUC2 secretion. We identified by mass spectrometry that B. dentium secretes the antioxidant γ-glutamylcysteine, which we speculate dampens ER stress-mediated ROS and minimizes ER stress phenotypes. B. dentium cell-free supernatant and γ-glutamylcysteine were taken up by human colonic T84 cells, increased glutathione levels, and reduced ROS generated by the ER-stressors thapsigargin and tunicamycin. Moreover, B. dentium supernatant and γ-glutamylcysteine were able to suppress NF-kB activation and IL-8 secretion. We found that B. dentium supernatant, γ-glutamylcysteine, and the positive control IL-10 attenuated the induction of UPR genes GRP78, CHOP, and sXBP1. To examine ER stress in vivo, we first examined mono-association of B. dentium in germ-free mice which increased MUC2 and IL-10 levels compared to germ-free controls. However, no changes were observed in ER stress-related genes, indicating that B. dentium can promote mucus secretion without inducing ER stress. In a TNBS-mediated ER stress model, we observed increased levels of UPR genes and pro-inflammatory cytokines in TNBS treated mice, which were reduced with addition of live B. dentium or γ-glutamylcysteine. We also observed increased colonic and serum levels of IL-10 in B. dentium- and γ-glutamylcysteine-treated mice compared to vehicle control. Immunostaining revealed retention of goblet cells and mucus secretion in both B. dentium- and γ-glutamylcysteine-treated animals. Collectively, these data demonstrate positive modulation of the UPR and MUC2 production by B. dentium-secreted compounds.
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Affiliation(s)
- Melinda A. Engevik
- Department of Pathology & Immunology, Baylor College of Medicine, Houston, Texas, USA,Department of Pathology, Texas Children’s Hospital, Houston, Texas, USA,CONTACT Melinda A. Engevik Department of Pathology & Immunology, Baylor College of Medicine, Houston, Texas, USA
| | - Beatrice Herrmann
- Department of Pathology & Immunology, Baylor College of Medicine, Houston, Texas, USA,Department of Pathology, Texas Children’s Hospital, Houston, Texas, USA
| | - Wenly Ruan
- Department of Pediatrics, Baylor College of Medicine, Houston, Texas, USA,Section of Gastroenterology, Hepatology, and Nutrition, Texas Children’s Hospital, Houston, Texas, USA
| | - Amy C. Engevik
- Department of Surgery, Vanderbilt University Medical Center, NashvilleTN, USA
| | - Kristen A. Engevik
- Department of Molecular Virology & Microbiology, Baylor College of Medicine, Houston, TX, USA
| | - Faith Ihekweazu
- Department of Pediatrics, Baylor College of Medicine, Houston, Texas, USA,Section of Gastroenterology, Hepatology, and Nutrition, Texas Children’s Hospital, Houston, Texas, USA
| | - Zhongcheng Shi
- Department of Pediatrics, Baylor College of Medicine, Houston, Texas, USA,Section of Gastroenterology, Hepatology, and Nutrition, Texas Children’s Hospital, Houston, Texas, USA
| | - Berkley Luck
- Department of Pathology & Immunology, Baylor College of Medicine, Houston, Texas, USA,Department of Pathology, Texas Children’s Hospital, Houston, Texas, USA
| | | | - Magdalena Esparza
- Department of Pathology & Immunology, Baylor College of Medicine, Houston, Texas, USA,Department of Pathology, Texas Children’s Hospital, Houston, Texas, USA
| | - Susan Venable
- Department of Pathology & Immunology, Baylor College of Medicine, Houston, Texas, USA,Department of Pathology, Texas Children’s Hospital, Houston, Texas, USA
| | - Thomas D. Horvath
- Department of Pathology & Immunology, Baylor College of Medicine, Houston, Texas, USA,Department of Pathology, Texas Children’s Hospital, Houston, Texas, USA
| | - Sigmund J. Haidacher
- Department of Pathology & Immunology, Baylor College of Medicine, Houston, Texas, USA,Department of Pathology, Texas Children’s Hospital, Houston, Texas, USA
| | - Kathleen M. Hoch
- Department of Pathology & Immunology, Baylor College of Medicine, Houston, Texas, USA,Department of Pathology, Texas Children’s Hospital, Houston, Texas, USA
| | - Anthony M. Haag
- Department of Pathology & Immunology, Baylor College of Medicine, Houston, Texas, USA,Department of Pathology, Texas Children’s Hospital, Houston, Texas, USA
| | - Deborah A. Schady
- Department of Pathology & Immunology, Baylor College of Medicine, Houston, Texas, USA,Department of Pathology, Texas Children’s Hospital, Houston, Texas, USA
| | - Joseph M. Hyser
- Department of Molecular Virology & Microbiology, Baylor College of Medicine, Houston, TX, USA,Alkek Center for Metagenomics and Microbiome Research, Baylor College of Medicine, Houston, TX, USA
| | - Jennifer K. Spinler
- Department of Pathology & Immunology, Baylor College of Medicine, Houston, Texas, USA,Department of Pathology, Texas Children’s Hospital, Houston, Texas, USA
| | - James Versalovic
- Department of Pediatrics, Baylor College of Medicine, Houston, Texas, USA,Section of Gastroenterology, Hepatology, and Nutrition, Texas Children’s Hospital, Houston, Texas, USA
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4
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Choi J, Li W, Schindell B, Ni L, Liu S, Zhao X, Gong J, Nyachoti M, Yang C. Molecular cloning, tissue distribution and the expression of cystine/glutamate exchanger (xCT, SLC7A11) in different tissues during development in broiler chickens. ACTA ACUST UNITED AC 2020; 6:107-114. [PMID: 32211536 PMCID: PMC7082690 DOI: 10.1016/j.aninu.2019.10.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2019] [Revised: 10/16/2019] [Accepted: 10/17/2019] [Indexed: 01/29/2023]
Abstract
The cystine/glutamate exchanger (xCT, SLC7A11) is a component of the system Xc amino-acid antiporter that is able to export glutamate and import cysteine into cells. The xCT amino acid exchanger has received a lot of attention, due to the fact that cysteine is an essential substrate for the synthesis of glutathione (GSH), an endogenous antioxidant in cells. The objective of this research was to clone the full-length cDNA of chicken xCT, and to investigate the gene expression of xCT in different tissues, including intestinal segments of broiler chickens during development. The full-length cDNA of chicken xCT (2,703 bp) was obtained from the jejunum by reverse transcription-PCR and sequenced. Homology tests showed that chicken xCT had 80.4%, 80.2%, and 71.2% homology at the nucleotide level with humans, cattle, and rats, respectively. Likewise, amino acid sequence analysis showed that chicken xCT protein is 86.4%, 79.3%, and 75.6% homologous with humans, cattle, and rats, respectively. Additionally, phylogenetic analysis indicated that chicken xCT genes share a closer genetic relationship with humans and cattle, than with rats. The chicken xCT protein has 12 transmembrane helixes, 6 extracellular loops, and 5 intracellular loops. The mRNA of xCT was detected in all tissues, including intestinal segments, in which the mRNA expression of xCT was significantly higher (P < 0.05) within the colon, compared to the jejunum and ileum. During development, a linear pattern of changes regarding the levels of the xCT mRNA was found, indicating that there was an abundance of xCT within the duodenum (P < 0.05). Furthermore, there were changes of the xCT mRNA abundance in the colon during development, which displayed linear and cubic patterns (P < 0.05). These results indicated that xCT is widely expressed both in intestinal segments, as well as other organs that are not associated with nutrient absorption. Further investigation is needed to characterize the functional relevance of xCT activity in oxidative stress and inflammation in the small intestine of broiler chickens.
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Affiliation(s)
- Janghan Choi
- Department of Animal Science, University of Manitoba, Winnipeg, MB, R3T 2N2, Canada
| | - Weiqi Li
- Department of Animal Science, University of Manitoba, Winnipeg, MB, R3T 2N2, Canada
| | - Brayden Schindell
- Department of Animal Science, University of Manitoba, Winnipeg, MB, R3T 2N2, Canada
| | - Liju Ni
- Department of Animal Science, University of Manitoba, Winnipeg, MB, R3T 2N2, Canada.,Shanghai Lab-Animal Research Center, Shanghai, 201203, China
| | - Shangxi Liu
- Department of Animal Science, University of Manitoba, Winnipeg, MB, R3T 2N2, Canada
| | - Xiaoya Zhao
- Department of Animal Science, University of Manitoba, Winnipeg, MB, R3T 2N2, Canada
| | - Joshua Gong
- Guelph Research and Development Centre, Agriculture Agri-Food Canada, Guelph, ON, N1G 5C9, Canada
| | - Martin Nyachoti
- Department of Animal Science, University of Manitoba, Winnipeg, MB, R3T 2N2, Canada
| | - Chengbo Yang
- Department of Animal Science, University of Manitoba, Winnipeg, MB, R3T 2N2, Canada
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5
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Prestipino A, Emhardt AJ, Aumann K, O'Sullivan D, Gorantla SP, Duquesne S, Melchinger W, Braun L, Vuckovic S, Boerries M, Busch H, Halbach S, Pennisi S, Poggio T, Apostolova P, Veratti P, Hettich M, Niedermann G, Bartholomä M, Shoumariyeh K, Jutzi JS, Wehrle J, Dierks C, Becker H, Schmitt-Graeff A, Follo M, Pfeifer D, Rohr J, Fuchs S, Ehl S, Hartl FA, Minguet S, Miething C, Heidel FH, Kröger N, Triviai I, Brummer T, Finke J, Illert AL, Ruggiero E, Bonini C, Duyster J, Pahl HL, Lane SW, Hill GR, Blazar BR, von Bubnoff N, Pearce EL, Zeiser R. Oncogenic JAK2 V617F causes PD-L1 expression, mediating immune escape in myeloproliferative neoplasms. Sci Transl Med 2019; 10:10/429/eaam7729. [PMID: 29467301 DOI: 10.1126/scitranslmed.aam7729] [Citation(s) in RCA: 162] [Impact Index Per Article: 32.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2017] [Revised: 09/19/2017] [Accepted: 12/08/2017] [Indexed: 12/14/2022]
Abstract
Recent evidence has revealed that oncogenic mutations may confer immune escape. A better understanding of how an oncogenic mutation affects immunosuppressive programmed death ligand 1 (PD-L1) expression may help in developing new therapeutic strategies. We show that oncogenic JAK2 (Janus kinase 2) activity caused STAT3 (signal transducer and activator of transcription 3) and STAT5 phosphorylation, which enhanced PD-L1 promoter activity and PD-L1 protein expression in JAK2V617F-mutant cells, whereas blockade of JAK2 reduced PD-L1 expression in myeloid JAK2V617F-mutant cells. PD-L1 expression was higher on primary cells isolated from patients with JAK2V617F-myeloproliferative neoplasms (MPNs) compared to healthy individuals and declined upon JAK2 inhibition. JAK2V617F mutational burden, pSTAT3, and PD-L1 expression were highest in primary MPN patient-derived monocytes, megakaryocytes, and platelets. PD-1 (programmed death receptor 1) inhibition prolonged survival in human MPN xenograft and primary murine MPN models. This effect was dependent on T cells. Mechanistically, PD-L1 surface expression in JAK2V617F-mutant cells affected metabolism and cell cycle progression of T cells. In summary, we report that in MPN, constitutive JAK2/STAT3/STAT5 activation, mainly in monocytes, megakaryocytes, and platelets, caused PD-L1-mediated immune escape by reducing T cell activation, metabolic activity, and cell cycle progression. The susceptibility of JAK2V617F-mutant MPN to PD-1 targeting paves the way for immunomodulatory approaches relying on PD-1 inhibition.
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Affiliation(s)
- Alessandro Prestipino
- Department of Hematology and Oncology, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg 79106, Germany.,Faculty of Biology, Albert Ludwigs University of Freiburg, Freiburg 79104, Germany
| | - Alica J Emhardt
- Department of Hematology and Oncology, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg 79106, Germany
| | - Konrad Aumann
- Institute of Surgical Pathology, Faculty of Medicine, University of Freiburg, Freiburg 79106, Germany
| | - David O'Sullivan
- Max Planck Institute for Immunobiology and Epigenetics, Freiburg 79108, Germany
| | - Sivahari P Gorantla
- Department of Hematology and Oncology, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg 79106, Germany
| | - Sandra Duquesne
- Department of Hematology and Oncology, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg 79106, Germany
| | - Wolfgang Melchinger
- Department of Hematology and Oncology, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg 79106, Germany
| | - Lukas Braun
- Department of Hematology and Oncology, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg 79106, Germany
| | - Slavica Vuckovic
- Department of Immunology, QIMR Berghofer Medical Research Institute, Brisbane, Queensland 4006, Australia.,School of Medicine, University of Queensland, Herston, Queensland 4006, Australia
| | - Melanie Boerries
- Institute of Molecular Medicine and Cell Research, Faculty of Medicine, University of Freiburg, Freiburg 79085, Germany.,German Cancer Consortium (DKTK) partner site Freiburg, Freiburg, Germany.,German Cancer Research Center (DKFZ), Heidelberg 69120, Germany
| | - Hauke Busch
- Institute of Molecular Medicine and Cell Research, Faculty of Medicine, University of Freiburg, Freiburg 79085, Germany.,Institute of Experimental Dermatology, Institute of Cardiogenetics, University of Lübeck, Lübeck 23562, Germany
| | - Sebastian Halbach
- Institute of Molecular Medicine and Cell Research, Faculty of Medicine, University of Freiburg, Freiburg 79085, Germany
| | - Sandra Pennisi
- Department of Hematology and Oncology, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg 79106, Germany.,Faculty of Biology, Albert Ludwigs University of Freiburg, Freiburg 79104, Germany
| | - Teresa Poggio
- Department of Hematology and Oncology, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg 79106, Germany.,Faculty of Biology, Albert Ludwigs University of Freiburg, Freiburg 79104, Germany
| | - Petya Apostolova
- Department of Hematology and Oncology, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg 79106, Germany.,Berta-Ottenstein Programme, Faculty of Medicine, University of Freiburg, Freiburg 79106, Germany
| | - Pia Veratti
- Department of Hematology and Oncology, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg 79106, Germany.,German Cancer Consortium (DKTK) partner site Freiburg, Freiburg, Germany.,German Cancer Research Center (DKFZ), Heidelberg 69120, Germany
| | - Michael Hettich
- Department of Radiation Oncology, Faculty of Medicine, University of Freiburg, Freiburg 79106, Germany
| | - Gabriele Niedermann
- Department of Radiation Oncology, Faculty of Medicine, University of Freiburg, Freiburg 79106, Germany
| | - Mark Bartholomä
- Department of Nuclear Medicine, Faculty of Medicine, University of Freiburg, Freiburg 79106, Germany
| | - Khalid Shoumariyeh
- Department of Hematology and Oncology, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg 79106, Germany
| | - Jonas S Jutzi
- Department of Hematology and Oncology, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg 79106, Germany.,Spemann Graduate School of Biology and Medicine, University of Freiburg, Freiburg 79085, Germany
| | - Julius Wehrle
- Department of Hematology and Oncology, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg 79106, Germany.,German Cancer Consortium (DKTK) partner site Freiburg, Freiburg, Germany.,German Cancer Research Center (DKFZ), Heidelberg 69120, Germany.,Berta-Ottenstein Programme, Faculty of Medicine, University of Freiburg, Freiburg 79106, Germany
| | - Christine Dierks
- Department of Hematology and Oncology, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg 79106, Germany
| | - Heiko Becker
- Department of Hematology and Oncology, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg 79106, Germany
| | - Annette Schmitt-Graeff
- Institute of Surgical Pathology, Faculty of Medicine, University of Freiburg, Freiburg 79106, Germany
| | - Marie Follo
- Department of Hematology and Oncology, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg 79106, Germany
| | - Dietmar Pfeifer
- Department of Hematology and Oncology, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg 79106, Germany
| | - Jan Rohr
- Center for Chronic Immunodeficiency, Medical Center, University of Freiburg, Freiburg 79106, Germany
| | - Sebastian Fuchs
- Center for Chronic Immunodeficiency, Medical Center, University of Freiburg, Freiburg 79106, Germany
| | - Stephan Ehl
- Center for Chronic Immunodeficiency, Medical Center, University of Freiburg, Freiburg 79106, Germany
| | - Frederike A Hartl
- Faculty of Biology, Albert Ludwigs University of Freiburg, Freiburg 79104, Germany.,BIOSS Centre for Biological Signalling Studies, University of Freiburg, Freiburg 79104, Germany
| | - Susana Minguet
- Faculty of Biology, Albert Ludwigs University of Freiburg, Freiburg 79104, Germany.,Center for Chronic Immunodeficiency, Medical Center, University of Freiburg, Freiburg 79106, Germany.,BIOSS Centre for Biological Signalling Studies, University of Freiburg, Freiburg 79104, Germany
| | - Cornelius Miething
- Department of Hematology and Oncology, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg 79106, Germany.,German Cancer Consortium (DKTK) partner site Freiburg, Freiburg, Germany.,German Cancer Research Center (DKFZ), Heidelberg 69120, Germany
| | - Florian H Heidel
- Internal Medicine II, Department of Hematology and Oncology, University Hospital of Jena, Jena 07745, Germany.,Leibniz Institute on Aging-Fritz Lipmann Institute, Jena 07745, Germany
| | - Nicolaus Kröger
- Department of Stem Cell Transplantation, University Medical Center Hamburg-Eppendorf, Hamburg 20246, Germany
| | - Ioanna Triviai
- Department of Stem Cell Transplantation, University Medical Center Hamburg-Eppendorf, Hamburg 20246, Germany
| | - Tilman Brummer
- Institute of Molecular Medicine and Cell Research, Faculty of Medicine, University of Freiburg, Freiburg 79085, Germany.,German Cancer Consortium (DKTK) partner site Freiburg, Freiburg, Germany.,German Cancer Research Center (DKFZ), Heidelberg 69120, Germany.,BIOSS Centre for Biological Signalling Studies, University of Freiburg, Freiburg 79104, Germany
| | - Jürgen Finke
- Department of Hematology and Oncology, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg 79106, Germany
| | - Anna L Illert
- Department of Hematology and Oncology, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg 79106, Germany
| | - Eliana Ruggiero
- Unit of Experimental Hematology, San Raffaele Scientific Institute, and University of Vita-Salute San Raffaele, Milano 20132, Italy
| | - Chiara Bonini
- Unit of Experimental Hematology, San Raffaele Scientific Institute, and University of Vita-Salute San Raffaele, Milano 20132, Italy
| | - Justus Duyster
- Department of Hematology and Oncology, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg 79106, Germany.,German Cancer Consortium (DKTK) partner site Freiburg, Freiburg, Germany.,German Cancer Research Center (DKFZ), Heidelberg 69120, Germany
| | - Heike L Pahl
- Department of Hematology and Oncology, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg 79106, Germany
| | - Steven W Lane
- Department of Immunology, QIMR Berghofer Medical Research Institute, Brisbane, Queensland 4006, Australia.,Royal Brisbane and Women's Hospital, Brisbane, Queensland, Australia.,University of Queensland, Herston, Queensland 4072, Australia
| | - Geoffrey R Hill
- Department of Immunology, QIMR Berghofer Medical Research Institute, Brisbane, Queensland 4006, Australia.,Royal Brisbane and Women's Hospital, Brisbane, Queensland, Australia.,University of Queensland, Herston, Queensland 4072, Australia
| | - Bruce R Blazar
- Division of Blood and Marrow Transplantation, Department of Pediatrics, University of Minnesota, Minneapolis, MN 55455, USA
| | - Nikolas von Bubnoff
- Department of Hematology and Oncology, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg 79106, Germany.,German Cancer Consortium (DKTK) partner site Freiburg, Freiburg, Germany.,German Cancer Research Center (DKFZ), Heidelberg 69120, Germany
| | - Erika L Pearce
- Max Planck Institute for Immunobiology and Epigenetics, Freiburg 79108, Germany
| | - Robert Zeiser
- Department of Hematology and Oncology, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg 79106, Germany. .,German Cancer Consortium (DKTK) partner site Freiburg, Freiburg, Germany.,German Cancer Research Center (DKFZ), Heidelberg 69120, Germany.,BIOSS Centre for Biological Signalling Studies, University of Freiburg, Freiburg 79104, Germany
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6
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Seelige R, Searles S, Bui JD. Mechanisms regulating immune surveillance of cellular stress in cancer. Cell Mol Life Sci 2018; 75:225-240. [PMID: 28744671 PMCID: PMC11105730 DOI: 10.1007/s00018-017-2597-7] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2017] [Revised: 06/28/2017] [Accepted: 07/17/2017] [Indexed: 12/19/2022]
Abstract
The purpose of this review is to explore immune-mediated mechanisms of stress surveillance in cancer, with particular emphasis on the idea that all cancers have classical hallmarks (Hanahan and Weinberg in Cell 100:57-70, 67; Cell 144:646-674, 68) that could be interrelated. We postulate that hallmarks of cancer associated with cellular stress pathways (Luo et al. in Cell 136:823-837, 101) including oxidative stress, proteotoxic stress, mitotic stress, DNA damage, and metabolic stress could define and modulate the inflammatory component of cancer. As such, the overarching goal of this review is to define the types of cellular stress that cancer cells undergo, and then to explore mechanisms by which immune cells recognize, respond to, and are affected by each stress response.
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Affiliation(s)
- Ruth Seelige
- Department of Pathology, University of California, 9500 Gilman Dr MC 0612, La Jolla, CA, 92093-0612, USA
| | - Stephen Searles
- Department of Pathology, University of California, 9500 Gilman Dr MC 0612, La Jolla, CA, 92093-0612, USA
| | - Jack D Bui
- Department of Pathology, University of California, 9500 Gilman Dr MC 0612, La Jolla, CA, 92093-0612, USA.
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7
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Lasitschka F, Giese T, Paparella M, Kurzhals SR, Wabnitz G, Jacob K, Gras J, Bode KA, Heninger AK, Sziskzai T, Samstag Y, Leszinski C, Jocher B, Al-Saeedi M, Meuer SC, Schröder-Braunstein J. Human monocytes downregulate innate response receptors following exposure to the microbial metabolite n-butyrate. IMMUNITY INFLAMMATION AND DISEASE 2017; 5:480-492. [PMID: 28681454 PMCID: PMC5691313 DOI: 10.1002/iid3.184] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/01/2016] [Revised: 05/26/2017] [Accepted: 06/12/2017] [Indexed: 12/23/2022]
Abstract
Introduction Hyporesponsiveness of human lamina propria immune cells to microbial and nutritional antigens represents one important feature of intestinal homeostasis. It is at least partially mediated by low expression of the innate response receptors CD11b, CD14, CD16 as well as the cystine‐glutamate transporter xCT on these cells. Milieu‐specific mechanisms leading to the down‐regulation of these receptors on circulating monocytes, the precursor cells of resident macrophages, are mostly unknown. Methods Here, we addressed the question whether the short chain fatty acid n‐butyrate, a fermentation product of the mammalian gut microbiota exhibiting histone deacetylase inhibitory activity, is able to modulate expression of these receptors in human circulating monocytes. Results Exposure to n‐butyrate resulted in the downregulation of CD11b, CD14, as well as CD16 surface expression on circulating monocytes. XCT transcript levels in circulating monocytes were also reduced following exposure to n‐butyrate. Importantly, treatment resulted in the downregulation of protein and gene expression of the transcription factor PU.1, which was shown to be at least partially required for the expression of CD16 in circulating monocytes. PU.1 expression in resident macrophages in situ was observed to be substantially lower in healthy when compared to inflamed colonic mucosa. Conclusions In summary, the intestinal microbiota may support symbiosis with the human host organism by n‐butyrate mediated downregulation of protein and gene expression of innate response receptors as well as xCT on circulating monocytes following recruitment to the lamina propria. Downregulation of CD16 gene expression may at least partially be caused at the transcriptional level by the n‐butyrate mediated decrease in expression of the transcription factor PU.1 in circulating monocytes.
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Affiliation(s)
- Felix Lasitschka
- Institute of Pathology, University Hospital Heidelberg, Im Neuenheimer Feld 224, 69120, Heidelberg, Germany.,Institute of Immunology, University Hospital Heidelberg, Im Neuenheimer Feld 305, 69120, Heidelberg, Germany
| | - Thomas Giese
- Institute of Immunology, University Hospital Heidelberg, Im Neuenheimer Feld 305, 69120, Heidelberg, Germany
| | - Marco Paparella
- Institute of Immunology, University Hospital Heidelberg, Im Neuenheimer Feld 305, 69120, Heidelberg, Germany
| | - Stefan R Kurzhals
- Institute of Immunology, University Hospital Heidelberg, Im Neuenheimer Feld 305, 69120, Heidelberg, Germany
| | - Guido Wabnitz
- Institute of Immunology, University Hospital Heidelberg, Im Neuenheimer Feld 305, 69120, Heidelberg, Germany
| | - Katrin Jacob
- Institute of Immunology, University Hospital Heidelberg, Im Neuenheimer Feld 305, 69120, Heidelberg, Germany
| | - Judith Gras
- Institute of Immunology, University Hospital Heidelberg, Im Neuenheimer Feld 305, 69120, Heidelberg, Germany
| | - Konrad A Bode
- Department of Infectious Diseases, Medical Microbiology and Hygiene, University Hospital Heidelberg, Im Neuenheimer Feld 324, 69120, Heidelberg, Germany
| | - Anne-Kristin Heninger
- Institute of Immunology, University Hospital Heidelberg, Im Neuenheimer Feld 305, 69120, Heidelberg, Germany
| | - Timea Sziskzai
- Department of Anesthesiology, University Hospital Heidelberg, Im Neuenheimer Feld 110, 69120, Heidelberg, Germany
| | - Yvonne Samstag
- Institute of Immunology, University Hospital Heidelberg, Im Neuenheimer Feld 305, 69120, Heidelberg, Germany
| | - Cornelia Leszinski
- Department of Surgery, St. Vincentius Hospital, Holzstr. 4a, 67346, Speyer, Germany
| | - Bettina Jocher
- Department of Surgery, University Hospital Heidelberg, Im Neuenheimer Feld 110, 69120, Heidelberg, Germany
| | - Mohammed Al-Saeedi
- Department of Surgery, University Hospital Heidelberg, Im Neuenheimer Feld 110, 69120, Heidelberg, Germany
| | - Stefan C Meuer
- Institute of Immunology, University Hospital Heidelberg, Im Neuenheimer Feld 305, 69120, Heidelberg, Germany
| | - Jutta Schröder-Braunstein
- Institute of Immunology, University Hospital Heidelberg, Im Neuenheimer Feld 305, 69120, Heidelberg, Germany
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8
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Heninger AK, Wentrup S, Al-Saeedi M, Schiessling S, Giese T, Wartha F, Meuer S, Schröder-Braunstein J. Immunomodulation of human intestinal T cells by the synthetic CD80 antagonist RhuDex®. IMMUNITY INFLAMMATION AND DISEASE 2014; 2:166-80. [PMID: 25505551 PMCID: PMC4257762 DOI: 10.1002/iid3.34] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/04/2014] [Revised: 08/13/2014] [Accepted: 08/25/2014] [Indexed: 12/17/2022]
Abstract
Deregulated activation of mucosal lamina propria T cells plays a central role in the pathogenesis of intestinal inflammation. One of the means to attenuate T cell activation is by blocking the CD28/CD80 co-stimulatory pathway. Here we investigate RhuDex®, a small molecule that binds to human CD80, for its effects on the activation of lamina propria T cells employing a gut-culture model of inflammation. To this end, lamina propria leukocytes (LPL) and peripheral blood lymphocytes (PBL) were stimulated either through the CD3/T-cell-receptor complex or the CD2-receptor (CD2) employing agonistic monoclonal antibodies. Co-stimulatory signals were provided by CD80/CD86 present on lamina propria myeloid cells or LPS-activated peripheral blood monocytes. Results show that RhuDex® caused a profound reduction of LPL and PBL proliferation, while Abatacept (CTLA-4-Ig) inhibited LPL proliferation to a small degree, and had no effect on PBL proliferation. Furthermore, Abatacept significantly inhibited IL-2, TNF-α, and IFN-γ release from LPL, primarily produced by CD4+ T cells, where IL-2 blockage was surprisingly strong, suggesting a down-regulating effect on regulatory T cells. In contrast, in the presence of RhuDex®, secretion of IL-17, again mostly by CD4+ T cells, and IFN-γ was inhibited in LPL and PBL, yet IL-2 remained unaffected. Thus, RhuDex® efficiently inhibited lamina propria and peripheral blood T-cell activation in this pre-clinical study making it a promising drug candidate for the treatment of intestinal inflammation.
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Affiliation(s)
- Anne-Kristin Heninger
- Institute for Immunology, University Hospital Heidelberg Im Neuenheimer Feld 305, 69120, Heidelberg, Germany
| | - Sabine Wentrup
- Institute for Immunology, University Hospital Heidelberg Im Neuenheimer Feld 305, 69120, Heidelberg, Germany
| | - Mohammed Al-Saeedi
- Department of General, Visceral and Transplant Surgery, University Hospital Heidelberg Im Neuenheimer Feld 110, 69120, Heidelberg, Germany
| | - Serin Schiessling
- Institute for Immunology, University Hospital Heidelberg Im Neuenheimer Feld 305, 69120, Heidelberg, Germany ; Department of General, Visceral and Transplant Surgery, University Hospital Heidelberg Im Neuenheimer Feld 110, 69120, Heidelberg, Germany
| | - Thomas Giese
- Institute for Immunology, University Hospital Heidelberg Im Neuenheimer Feld 305, 69120, Heidelberg, Germany
| | - Florian Wartha
- Medigene AG Lochhamer Str. 11, 82152, Planegg/Martinsried, Germany
| | - Stefan Meuer
- Institute for Immunology, University Hospital Heidelberg Im Neuenheimer Feld 305, 69120, Heidelberg, Germany
| | - Jutta Schröder-Braunstein
- Institute for Immunology, University Hospital Heidelberg Im Neuenheimer Feld 305, 69120, Heidelberg, Germany
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9
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Amino acids and immune response: a role for cysteine, glutamine, phenylalanine, tryptophan and arginine in T-cell function and cancer? Pathol Oncol Res 2014; 21:9-17. [PMID: 25351939 DOI: 10.1007/s12253-014-9860-0] [Citation(s) in RCA: 101] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/22/2014] [Accepted: 10/22/2014] [Indexed: 01/16/2023]
Abstract
While proteins are critical for immunity, T-cells constitute a critical component of adaptive immunity by clearing cancerous cells among other abnormal cells. However, cancer cells exhibit a potential to escape T-cell control by employing mechanisms not completely delineated. Interesting work has investigated how certain amino acids affect the proliferation rate of T-cells as well as their effectiveness in clearing tumors. The role of amino acids cysteine, glutamine, phenylalanine, tryptophan and arginine in immunomodulation and particularly regarding T-cell proliferation and activation is discussed. The redox balance is reported to affect T-cell proliferation via modulation of cysteine availability. In addition antigen presenting cells (APCs), similar to myeloid cells determine the availability of amino acids in the extracellular microenvironment affecting T-cell proliferation and activation. A better mechanistic understanding of T-cell function modulation via amino acid signaling or metabolic properties may be helpful towards optimization of adaptive immunity with implications for cancer prognosis and treatment.
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10
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Schröder-Braunstein J, Gras J, Brors B, Schwarz S, Szikszai T, Lasitschka F, Wabnitz G, Heidtmann A, Lee YS, Schiessling S, Leowardi C, Al-Saeedi M, Ulrich A, Engelke A, Winter J, Samstag Y, Giese T, Meuer S. Initiation of an inflammatory response in resident intestinal lamina propria cells -use of a human organ culture model. PLoS One 2014; 9:e97780. [PMID: 24841635 PMCID: PMC4026413 DOI: 10.1371/journal.pone.0097780] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2014] [Accepted: 04/22/2014] [Indexed: 01/30/2023] Open
Abstract
Resident human lamina propria immune cells serve as powerful effectors in host defense. Molecular events associated with the initiation of an intestinal inflammatory response in these cells are largely unknown. Here, we aimed to characterize phenotypic and functional changes induced in these cells at the onset of intestinal inflammation using a human intestinal organ culture model. In this model, healthy human colonic mucosa was depleted of epithelial cells by EDTA treatment. Following loss of the epithelial layer, expression of the inflammatory mediators IL1B, IL6, IL8, IL23A, TNFA, CXCL2, and the surface receptors CD14, TLR2, CD86, CD54 was rapidly induced in resident lamina propria cells in situ as determined by qRT-PCR and immunohistology. Gene microarray analysis of lamina propria cells obtained by laser-capture microdissection provided an overview of global changes in gene expression occurring during the initiation of an intestinal inflammatory response in these cells. Bioinformatic analysis gave insight into signalling pathways mediating this inflammatory response. Furthermore, comparison with published microarray datasets of inflamed mucosa in vivo (ulcerative colitis) revealed a significant overlap of differentially regulated genes underlining the in vivo relevance of the organ culture model. Furthermore, genes never been previously associated with intestinal inflammation were identified using this model. The organ culture model characterized may be useful to study molecular mechanisms underlying the initiation of an intestinal inflammatory response in normal mucosa as well as potential alterations of this response in inflammatory bowel disease.
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Affiliation(s)
| | - Judith Gras
- Institute of Immunology, University Hospital Heidelberg, Heidelberg, Germany
| | - Benedikt Brors
- Division of Theoretical Bioinformatics, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Sonja Schwarz
- Institute of Immunology, University Hospital Heidelberg, Heidelberg, Germany
| | - Timea Szikszai
- Institute of Immunology, University Hospital Heidelberg, Heidelberg, Germany
- Department of Anesthesiology, University Hospital Heidelberg, Heidelberg, Germany
| | - Felix Lasitschka
- Institute of Pathology, University Hospital Heidelberg, Heidelberg, Germany
| | - Guido Wabnitz
- Institute of Immunology, University Hospital Heidelberg, Heidelberg, Germany
| | - Antje Heidtmann
- Institute of Immunology, University Hospital Heidelberg, Heidelberg, Germany
| | - Young-Seon Lee
- Institute of Immunology, University Hospital Heidelberg, Heidelberg, Germany
- Department of Gastroenterology, Hepatology, and Endocrinology, Hannover Medical School, Hannover, Germany
| | - Serin Schiessling
- Institute of Immunology, University Hospital Heidelberg, Heidelberg, Germany
- Department of Surgery, University Hospital Heidelberg, Heidelberg, Germany
| | - Christine Leowardi
- Department of Surgery, University Hospital Heidelberg, Heidelberg, Germany
| | - Mohammed Al-Saeedi
- Department of Surgery, University Hospital Heidelberg, Heidelberg, Germany
| | - Alexis Ulrich
- Department of Surgery, University Hospital Heidelberg, Heidelberg, Germany
| | | | - Johannes Winter
- Department of Surgery, St. Vincentius Hospital, Speyer, Germany
| | - Yvonne Samstag
- Institute of Immunology, University Hospital Heidelberg, Heidelberg, Germany
| | - Thomas Giese
- Institute of Immunology, University Hospital Heidelberg, Heidelberg, Germany
| | - Stefan Meuer
- Institute of Immunology, University Hospital Heidelberg, Heidelberg, Germany
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11
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Abstract
Reactive oxygen species (ROS) react preferentially with certain atoms to modulate functions ranging from cell homeostasis to cell death. Molecular actions include both inhibition and activation of proteins, mutagenesis of DNA and activation of gene transcription. Cellular actions include promotion or suppression of inflammation, immunity and carcinogenesis. ROS help the host to compete against microorganisms and are also involved in intermicrobial competition. ROS chemistry and their pleiotropy make them difficult to localize, to quantify and to manipulate - challenges we must overcome to translate ROS biology into medical advances.
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12
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Stegmann M, Metcalfe C, Barclay AN. Immunoregulation through membrane proteins modified by reducing conditions induced by immune reactions. Eur J Immunol 2013; 43:15-21. [PMID: 23233323 PMCID: PMC7163605 DOI: 10.1002/eji.201242849] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2012] [Revised: 10/22/2012] [Accepted: 12/05/2012] [Indexed: 01/19/2023]
Abstract
Selected disulfide bonds in membrane proteins are labile and are thus susceptible to changes in redox potential and/or the presence of thiol isomerase enzymes. Modification of these disulfide bonds can lead to conformational changes of the protein that in turn may alter protein activity and function. This occurs in the entry of several enveloped viruses into their host cells, e.g. HIV, hepatitis C virus and Newcastle disease virus. Labile disulfide bonds are also important in platelet activation, cytokine signalling and in a variety of diseases including cancer and arthritis. In this review we will concentrate on recent advances in understanding the conditions that lead to disulfide bond reduction in membrane proteins and their effects in regulating immune function.
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Affiliation(s)
- Monika Stegmann
- Oxford Molecular Pathology Institute, Sir William Dunn School of Pathology, University of Oxford, South Parks Road, Oxford, United Kingdom
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13
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Lewerenz J, Hewett SJ, Huang Y, Lambros M, Gout PW, Kalivas PW, Massie A, Smolders I, Methner A, Pergande M, Smith SB, Ganapathy V, Maher P. The cystine/glutamate antiporter system x(c)(-) in health and disease: from molecular mechanisms to novel therapeutic opportunities. Antioxid Redox Signal 2013; 18:522-55. [PMID: 22667998 PMCID: PMC3545354 DOI: 10.1089/ars.2011.4391] [Citation(s) in RCA: 652] [Impact Index Per Article: 59.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
The antiporter system x(c)(-) imports the amino acid cystine, the oxidized form of cysteine, into cells with a 1:1 counter-transport of glutamate. It is composed of a light chain, xCT, and a heavy chain, 4F2 heavy chain (4F2hc), and, thus, belongs to the family of heterodimeric amino acid transporters. Cysteine is the rate-limiting substrate for the important antioxidant glutathione (GSH) and, along with cystine, it also forms a key redox couple on its own. Glutamate is a major neurotransmitter in the central nervous system (CNS). By phylogenetic analysis, we show that system x(c)(-) is a rather evolutionarily new amino acid transport system. In addition, we summarize the current knowledge regarding the molecular mechanisms that regulate system x(c)(-), including the transcriptional regulation of the xCT light chain, posttranscriptional mechanisms, and pharmacological inhibitors of system x(c)(-). Moreover, the roles of system x(c)(-) in regulating GSH levels, the redox state of the extracellular cystine/cysteine redox couple, and extracellular glutamate levels are discussed. In vitro, glutamate-mediated system x(c)(-) inhibition leads to neuronal cell death, a paradigm called oxidative glutamate toxicity, which has successfully been used to identify neuroprotective compounds. In vivo, xCT has a rather restricted expression pattern with the highest levels in the CNS and parts of the immune system. System x(c)(-) is also present in the eye. Moreover, an elevated expression of xCT has been reported in cancer. We highlight the diverse roles of system x(c)(-) in the regulation of the immune response, in various aspects of cancer and in the eye and the CNS.
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Affiliation(s)
- Jan Lewerenz
- Department of Neurology, University of Ulm, Ulm, Germany.
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14
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Circu ML, Aw TY. Intestinal redox biology and oxidative stress. Semin Cell Dev Biol 2012; 23:729-37. [PMID: 22484611 DOI: 10.1016/j.semcdb.2012.03.014] [Citation(s) in RCA: 204] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2012] [Revised: 03/13/2012] [Accepted: 03/14/2012] [Indexed: 12/19/2022]
Abstract
The intestinal epithelium sits at the interface between an organism and its luminal environment, and as such is prone to oxidative damage induced by luminal oxidants. Mucosal integrity is maintained by the luminal redox status of the glutathione/glutathione disulfide (GSH/GSSG) and cysteine/cystine (Cys/CySS) couples which also support luminal nutrient absorption, mucus fluidity, and a diverse microbiota. The epithelial layer is uniquely organized for rapid self-renewal that is achieved by the well-regulated processes of crypt stem cell proliferation and crypt-to-villus cell differentiation. The GSH/GSSG and Cys/CySS redox couples, known to modulate intestinal cell transition through proliferation, differentiation or apoptosis, could govern the regenerative potential of the mucosa. These two couples, together with that of the thioredoxin/thioredoxin disulfide (Trx/TrxSS) couple are the major intracellular redox systems, and it is proposed that they each function as distinctive redox control nodes or circuitry in the control of metabolic processes and networks of enzymatic reactions. Specificity of redox signaling is accomplished in part by subcellular compartmentation of the individual redox systems within the mitochondria, nucleus, endoplasmic reticulum, and cytosol wherein each defined redox environment is suited to the specific metabolic function within that compartment. Mucosal oxidative stress would result from the disruption of these unique redox control nodes, and the subsequent alteration in redox signaling can contribute to the development of degenerative pathologies of the intestine, such as inflammation and cancer.
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Affiliation(s)
- Magdalena L Circu
- Department of Molecular & Cellular Physiology, Louisiana State University Health Sciences Center, Shreveport, LA 71130, USA
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15
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Abstract
The intestinal tract, known for its capability for self-renew, represents the first barrier of defence between the organism and its luminal environment. The thiol/disulfide redox systems comprising the glutathione/glutathione disulfide (GSH/GSSG), cysteine/cystine (Cys/CySS) and reduced and oxidized thioredoxin (Trx/TrxSS) redox couples play important roles in preserving tissue redox homeostasis, metabolic functions, and cellular integrity. Control of the thiol-disulfide status at the luminal surface is essential for maintaining mucus fluidity and absorption of nutrients, and protection against chemical-induced oxidant injury. Within intestinal cells, these redox couples preserve an environment that supports physiological processes and orchestrates networks of enzymatic reactions against oxidative stress. In this review, we focus on the intestinal redox and antioxidant systems, their subcellular compartmentation, redox signalling and epithelial turnover, and contribution of luminal microbiota, key aspects that are relevant to understanding redox-dependent processes in gut biology with implications for degenerative digestive disorders, such as inflammation and cancer.
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Affiliation(s)
- Magdalena L Circu
- Department of Molecular & Cellular Physiology, Louisiana State University Health Sciences Center, Shreveport, LA, USA
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16
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Rubartelli A, Gattorno M, Netea MG, Dinarello CA. Interplay between redox status and inflammasome activation. Trends Immunol 2011; 32:559-66. [PMID: 21962746 DOI: 10.1016/j.it.2011.08.005] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2011] [Revised: 08/25/2011] [Accepted: 08/28/2011] [Indexed: 12/29/2022]
Abstract
Several inflammation-related processes, including inflammasome activation and interleukin (IL)-1β secretion, are dependent on redox signaling. However, the type of redox response involved as well as the relevant role of pro-oxidant and antioxidant events are matters of intense debate. By comparing leukemic myeloid cells, healthy monocytes and macrophages, as well as monocytes from patients carrying mutations in members of the Nod-like receptor (NLR) gene family, we have drawn a model that reconciles previous conflicting hypotheses. We propose that the redox state of resting inflammatory cells determines the type and extent of redox response to pattern recognition receptor stimulation, which in turn dictates the efficiency of inflammasome activation. The impact on genetic and acquired inflammatory diseases will be discussed.
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Affiliation(s)
- Anna Rubartelli
- Cell Biology Unit, National Cancer Research Institute, 16132 Genova, Italy.
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17
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Carta S, Tassi S, Pettinati I, Delfino L, Dinarello CA, Rubartelli A. The rate of interleukin-1beta secretion in different myeloid cells varies with the extent of redox response to Toll-like receptor triggering. J Biol Chem 2011; 286:27069-80. [PMID: 21628463 PMCID: PMC3149300 DOI: 10.1074/jbc.m110.203398] [Citation(s) in RCA: 76] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
Human myeloid cells activate the NLRP3 inflammasome and secrete interleukin (IL)-1β in response to various Toll-like receptor (TLR) ligands, but the rate of secretion is much higher in primary human monocytes than in cultured macrophages or THP-1 cells. The different myeloid cells also display different redox status under resting conditions and redox response to TLR activation. Resting monocytes display a balanced redox state, with low production of reactive oxygen species (ROS) and antioxidants. TLR engagement induces an effective redox response with increased ROS generation followed by a sustained antioxidant response, parallelled by efficient IL-1β secretion. Drugs blocking ROS production or the antioxidant response prevent the secretion of mature IL-1β but not the biosynthesis of pro-IL-1β, indicating that redox remodeling is responsible for IL-1β processing and release. Unlike monocytes, THP-1 cells and cultured macrophages have up-regulated antioxidant systems that buffer the oxidative hit provided by TLR triggering and suppress the consequent redox response. This aborted redox remodeling is paralleled by low efficiency IL-1β processing and secretion. High doses (5 mM) of H(2)O(2) overcome the high antioxidant capacity of THP-1 cells, restore an efficient redox response, and increase the rate of IL-1β secretion. Together these data indicate that a tightly controlled redox homeostasis in resting cells is a prerequisite for a robust redox response to TLR ligands, in turn necessary for the efficient inflammasome activation. Inflammasome activation by bacterial DNA is not modulated by redox responses, suggesting that redox-dependent regulation of IL-1β secretion is restricted to some inflammasomes including NLRP3 but excluding AIM-2.
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Affiliation(s)
- Sonia Carta
- Cell Biology Unit, National Cancer Research Institute, 16132 Genova, Italy
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18
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Yan Z, Garg SK, Banerjee R. Regulatory T cells interfere with glutathione metabolism in dendritic cells and T cells. J Biol Chem 2010; 285:41525-32. [PMID: 21037289 DOI: 10.1074/jbc.m110.189944] [Citation(s) in RCA: 87] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Naturally occurring CD4(+)CD25(+)Foxp3(+) regulatory T cells (Tregs) suppress proliferation of CD4(+)CD25(-) effector T cells (Teffs) by mechanisms that are not well understood. We have previously demonstrated a novel mechanism of Treg suppression, i.e. interference with extracellular redox remodeling that occurs during activation of T cells by dendritic cells. In this study, we demonstrate that Treg-mediated redox perturbation is antigen-dependent but not antigen-specific, is CTLA-4-dependent, and requires cell-cell contact. Furthermore, we show that Tregs use multiple strategies for extracellular redox remodeling, including diminished GSH synthesis in dendritic cells via decreased expression of γ-glutamylcysteine synthetase, the limiting enzyme for GSH synthesis. Tregs also consume extracellular cysteine and partition it more proficiently to the oxidation product (sulfate), whereas Teffs divert more of the cysteine pool toward protein and GSH synthesis. Tregs appear to block GSH redistribution from the nucleus to the cytoplasm in Teffs, which is abrogated by the addition of exogenous cysteine. Together, these data provide novel insights into modulation of sulfur-based redox metabolism by Tregs, leading to suppression of T cell activation and proliferation.
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Affiliation(s)
- Zhonghua Yan
- Department of Biological Chemistry, University of Michigan Medical Center, Ann Arbor, Michigan 48109-5606, USA
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19
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Abstract
Activation and proliferation of T cells require a reducing extracellular microenvironment in the immune synapse that is provided by antigen presenting cells, especially dendritic cells. Stimulation of dendritic cells by T cells activates the NF-kappaB pathway in dendritic cells and induces an antioxidant response. It also enhances system x(c)(-)-dependent cystine uptake, leading to enhanced glutathione synthesis, export, and, finally, degradation to cysteine outside the cell. Accumulation of extracellular cysteine supports glutathione synthesis in T cells while also leading to a more reducing redox potential that is needed for T cell proliferation. Naturally occurring regulatory T cells, a suppressor subpopulation of T cells, prevent autoimmune diseases and maintain peripheral tolerance by suppressing self-reactive effector T cells. They also suppress beneficial immune responses to parasites, viruses, and tumors. However, their mechanism of suppression is still not fully understood. Recently, we have found that inhibition by regulatory T cells of dendritic cell-induced extracellular redox remodeling is a component of the regulatory T cell suppression mechanism. In this review, we describe recent advances in our understanding of redox regulation and signaling in the adaptive immune system with a focus on T cell activation by dendritic cells. The role of regulatory T cells in perturbing redox remodeling by dendritic cells and its implications as a general regulatory T cell suppression mechanism are discussed.
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Affiliation(s)
- Zhonghua Yan
- Department of Biological Chemistry, University of Michigan Medical Center, University of Michigan, Ann Arbor, Michigan 48109-5606, USA
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20
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Nägler DK, Kraus S, Feierler J, Mentele R, Lottspeich F, Jochum M, Faussner A. A cysteine-type carboxypeptidase, cathepsin X, generates peptide receptor agonists. Int Immunopharmacol 2009; 10:134-9. [PMID: 19800993 DOI: 10.1016/j.intimp.2009.09.018] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2009] [Revised: 09/17/2009] [Accepted: 09/24/2009] [Indexed: 01/06/2023]
Abstract
The kallikrein-kinin system and the renin-angiotensin system interact at different levels and are linked by various molecules such as angiotensin-converting enzyme which degrades bradykinin into inactive peptides. Here we report that a cysteine-type carboxypeptidase, cathepsin X, is able to modulate the kallikrein-kinin system through carboxyterminal processing of the small peptide hormones bradykinin and kallidin. Both peptides are thereby converted from bradykinin B(2) receptor ligands to bradykinin B(1) receptor specific ligands. Cathepsin X, which has previously been recognized as an inflammatory marker may therefore act as a type I kininase. In addition, we have identified cathepsin X as an alternative possible link between the kallikrein-kinin system and the renin-angiotensin system in that it not only cleaves kinins C-terminally, but also converts angiotensin I to angiotensin II.
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Affiliation(s)
- Dorit K Nägler
- Division of Clinical Chemistry and Clinical Biochemistry, Surgical Department, Ludwig-Maximilians-University, Munich, Germany.
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Perminow G, Reikvam DH, Lyckander LG, Brandtzaeg P, Vatn MH, Carlsen HS. Increased number and activation of colonic macrophages in pediatric patients with untreated Crohn's disease. Inflamm Bowel Dis 2009; 15:1368-78. [PMID: 19322902 DOI: 10.1002/ibd.20916] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
BACKGROUND Pediatric inflammatory bowel disease (IBD) may be phenotypically different from adult IBD. In IBD lesions, macrophages are overactivated, suggesting involvement of innate immunity in the pathogenesis. Here, mucosal macrophages were studied in selected untreated pediatric patients compared with adults from a population-based Norwegian cohort of IBD patients. Age-matched non-IBD controls were also included. METHODS Untreated children (<18 years) and adults (> or =18 years) were included at diagnosis with colonic and ileal biopsies. Controls were symptomatic non-IBD patients with histologically normal gut. Frozen mucosal sections were examined by immunohistochemistry for cellular expression of the pan-macrophage marker CD68 and the costimulatory molecule CD40. Two-color immunofluorescence staining in situ was performed to identify CD40(+) macrophages. RESULTS Non-IBD adults had significantly higher mucosal density of colonic CD68(+) macrophages than non-IBD children. In pediatric Crohn's disease (CD), macrophages were significantly increased in the colon (but not in the ileum) compared with controls. Their mucosal density in pediatric CD was significantly higher than in pediatric ulcerative colitis. The number of CD40(+) (activated) macrophages was significantly elevated in both histologically inflamed and uninflamed colon and ileum of IBD children. CONCLUSIONS Histologically normal colon mucosa contains fewer macrophages in children than in adults. However, in colon of children with untreated CD the mucosal macrophage density is increased. Activated mucosal macrophages are increased in untreated pediatric IBD regardless of inflammatory grade. Such upregulated innate mucosal immune activation may contribute to the colonic phenotype of childhood CD.
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Affiliation(s)
- Gøri Perminow
- Department of Pediatrics, Akershus University Hospital, Nordbyhagen and Oslo University Hospital, Ullevål, Oslo, Norway.
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Hoffmann JC, Peters K, Pawlowski NN, Grollich K, Henschke S, Herrmann B, Zeitz M, Westermann J. In vivoProliferation of Rat Lamina Propria T Lymphocytes: General Hyporesponsiveness but Increased Importance of the CD2 and CD28 Pathways. Immunol Invest 2009; 38:466-82. [DOI: 10.1080/08820130902888342] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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van Ampting MTJ, Schonewille AJ, Vink C, Brummer RJM, van der Meer R, Bovee-Oudenhoven IMJ. Intestinal barrier function in response to abundant or depleted mucosal glutathione in Salmonella-infected rats. BMC PHYSIOLOGY 2009; 9:6. [PMID: 19374741 PMCID: PMC2678068 DOI: 10.1186/1472-6793-9-6] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/01/2008] [Accepted: 04/17/2009] [Indexed: 12/24/2022]
Abstract
Background Glutathione, the main antioxidant of intestinal epithelial cells, is suggested to play an important role in gut barrier function and prevention of inflammation-related oxidative damage as induced by acute bacterial infection. Most studies on intestinal glutathione focus on oxidative stress reduction without considering functional disease outcome. Our aim was to determine whether depletion or maintenance of intestinal glutathione changes susceptibility of rats to Salmonella infection and associated inflammation. Rats were fed a control diet or the same diet supplemented with buthionine sulfoximine (BSO; glutathione depletion) or cystine (glutathione maintenance). Inert chromium ethylenediamine-tetraacetic acid (CrEDTA) was added to the diets to quantify intestinal permeability. At day 4 after oral gavage with Salmonella enteritidis (or saline for non-infected controls), Salmonella translocation was determined by culturing extra-intestinal organs. Liver and ileal mucosa were collected for analyses of glutathione, inflammation markers and oxidative damage. Faeces was collected to quantify diarrhoea. Results Glutathione depletion aggravated ileal inflammation after infection as indicated by increased levels of mucosal myeloperoxidase and interleukin-1β. Remarkably, intestinal permeability and Salmonella translocation were not increased. Cystine supplementation maintained glutathione in the intestinal mucosa but inflammation and oxidative damage were not diminished. Nevertheless, cystine reduced intestinal permeability and Salmonella translocation. Conclusion Despite increased infection-induced mucosal inflammation upon glutathione depletion, this tripeptide does not play a role in intestinal permeability, bacterial translocation and diarrhoea. On the other hand, cystine enhances gut barrier function by a mechanism unlikely to be related to glutathione.
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Castellani P, Angelini G, Delfino L, Matucci A, Rubartelli A. The thiol redox state of lymphoid organs is modified by immunization: role of different immune cell populations. Eur J Immunol 2008; 38:2419-25. [PMID: 18792398 DOI: 10.1002/eji.200838439] [Citation(s) in RCA: 61] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Resting T lymphocytes can internalize reduced cysteine (Cys) but not cystine, the oxidized form of the amino acid that predominates extracellularly. In vitro studies have shown that DC provide Cys to T cells during antigen presentation, allowing their activation. Here, we show that increased thiol production is a hallmark of immune response in vivo. Indeed, the thiol content of LN increases dramatically after antigen injection. Non-protein thiols co-distribute with DC and are highly abundant in germinal centers. In agreement, activated but not resting B lymphocytes and macrophages release free thiols. Increased thiol release following activation requires thioredoxin and is paralleled by increased thioredoxin expression. The T zones of LN are consistently less stained, and both resting and activated T cells are unable to release thiols. Interestingly, the cystine/glutamate transporter x(c) (-) is absent in resting T lymphocytes but is rapidly induced by TCR triggering in vitro, indicating that the release of T cells from the need of exogenous Cys occurs early after activation. These results indicate that a reducing microenvironment is essential to start the immune response but dispensable for its evolution, and support the emerging concept that extracellular redox is implicated in the control of crucial cellular functions.
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Oxidation of cofilin mediates T cell hyporesponsiveness under oxidative stress conditions. Immunity 2008; 29:404-13. [PMID: 18771940 DOI: 10.1016/j.immuni.2008.06.016] [Citation(s) in RCA: 115] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2008] [Revised: 06/02/2008] [Accepted: 06/23/2008] [Indexed: 02/03/2023]
Abstract
Oxidative stress leads to impaired T cell activation. A central integrator of T cell activation is the actin-remodelling protein cofilin. Cofilin is activated through dephosphorylation at Ser3. Activated cofilin enables actin dynamics through severing and depolymerization of F-actin. Binding of cofilin to actin is required for formation of the immune synapse and T cell activation. Here, we showed that oxidatively stressed human T cells were impaired in chemotaxis- and costimulation-induced F-actin modulation. Although cofilin was dephosphorylated, steady-state F-actin levels increased under oxidative stress conditions. Mass spectrometry revealed that cofilin itself was a target for oxidation. Cofilin oxidation induced formation of an intramolecular disulfide bridge and loss of its Ser3 phosphorylation. Importantly, dephosphorylated oxidized cofilin, although still able to bind to F-actin, did not mediate F-actin depolymerization. Impairing actin dynamics through oxidation of cofilin provides a molecular explanation for the T cell hyporesponsiveness caused by oxidative stress.
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