1
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Kudelka MR, Gu W, Matsumoto Y, Ju T, Barnes II RH, Kardish RJ, Heimburg-Molinaro J, Lehoux S, Zeng J, Cohen C, Robinson BS, Shah KS, Chaikof EL, Stowell SR, Cummings RD. Targeting altered glycosylation in secreted tumor glycoproteins for broad cancer detection. Glycobiology 2023; 33:567-578. [PMID: 37216646 PMCID: PMC10426321 DOI: 10.1093/glycob/cwad035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Revised: 03/23/2023] [Indexed: 05/24/2023] Open
Abstract
There is an urgent need to develop new tumor biomarkers for early cancer detection, but the variability of tumor-derived antigens has been a limitation. Here we demonstrate a novel anti-Tn antibody microarray platform to detect Tn+ glycoproteins, a near universal antigen in carcinoma-derived glycoproteins, for broad detection of cancer. The platform uses a specific recombinant IgG1 to the Tn antigen (CD175) as a capture reagent and a recombinant IgM to the Tn antigen as a detecting reagent. These reagents were validated by immunohistochemistry in recognizing the Tn antigen using hundreds of human tumor specimens. Using this approach, we could detect Tn+ glycoproteins at subnanogram levels using cell lines and culture media, serum, and stool samples from mice engineered to express the Tn antigen in intestinal epithelial cells. The development of a general cancer detection platform using recombinant antibodies for detection of altered tumor glycoproteins expressing a unique antigen could have a significant impact on cancer detection and monitoring.
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Affiliation(s)
- Matthew R Kudelka
- Department of Biochemistry, Emory University School of Medicine, Atlanta, GA 30033, United States
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, United States
| | - Wei Gu
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, United States
| | - Yasuyuki Matsumoto
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, United States
| | - Tongzhong Ju
- Department of Biochemistry, Emory University School of Medicine, Atlanta, GA 30033, United States
| | - Richard H Barnes II
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, United States
| | - Robert J Kardish
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, United States
| | - Jamie Heimburg-Molinaro
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, United States
| | - Sylvain Lehoux
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, United States
| | - Junwei Zeng
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, United States
| | - Cynthia Cohen
- Department of Pathology and Laboratory Medicine, Emory University School of Medicine, Atlanta, GA 30033, United States
| | - Brian S Robinson
- Department of Pathology and Laboratory Medicine, Emory University School of Medicine, Atlanta, GA 30033, United States
| | - Kinjal S Shah
- Department of Pathology and Laboratory Medicine, Emory University School of Medicine, Atlanta, GA 30033, United States
| | - Elliot L Chaikof
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, United States
| | - Sean R Stowell
- Department of Pathology and Laboratory Medicine, Emory University School of Medicine, Atlanta, GA 30033, United States
| | - Richard D Cummings
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, United States
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2
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Matsumoto Y, Aryal RP, Heimburg-Molinaro J, Park SS, Wever WJ, Lehoux S, Stavenhagen K, van Wijk JAE, Van Die I, Chapman AB, Chaikof EL, Cummings RD. Identification and characterization of circulating immune complexes in IgA nephropathy. Sci Adv 2022; 8:eabm8783. [PMID: 36306365 PMCID: PMC9616497 DOI: 10.1126/sciadv.abm8783] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Accepted: 09/12/2022] [Indexed: 05/14/2023]
Abstract
The underlying pathology of immunoglobulin A (IgA) nephropathy (IgAN), the most common glomerulonephritis worldwide, is driven by the deposition of immune complexes containing galactose-deficient IgA1 [Tn(+)IgA1] in the glomerular mesangium. Here, we report that novel anti-Tn circulating immune complexes (anti-Tn CICs) contain predominantly IgM, representing large macromolecular complexes of ~1.2 megadaltons to several megadalton sizes together with Tn(+)IgA1 and some IgG. These complexes are significantly elevated in sera of patients with IgAN, which contains higher levels of complement C3, compared to healthy individuals. Anti-Tn CICs are bioactive and induce specific proliferation of human renal mesangial cells. We found that these anti-Tn CICs can be dissociated with small glycomimetic compounds, which mimic the Tn antigen of Tn(+)IgA1, releasing IgA1 from anti-Tn CICs. This glycomimetic compound can also significantly inhibit the proliferative activity of anti-Tn CICs of patients with IgAN. These findings could enhance both the diagnosis of IgAN and its treatment, as specific drug treatments are now unavailable.
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Affiliation(s)
- Yasuyuki Matsumoto
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Rajindra P. Aryal
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Jamie Heimburg-Molinaro
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Simon S. Park
- Department of Surgery, Center for Drug Discovery and Translational Research, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
- Wyss Institute of Biologically Inspired Engineering, Harvard University, Boston, MA, USA
| | - Walter J. Wever
- Department of Surgery, Center for Drug Discovery and Translational Research, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
- Wyss Institute of Biologically Inspired Engineering, Harvard University, Boston, MA, USA
| | - Sylvain Lehoux
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Kathrin Stavenhagen
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Joanna A. E. van Wijk
- Department of Pediatric Nephrology, Amsterdam University Medical Centre, location VUmc, Amsterdam, Netherlands
| | - Irma Van Die
- Department of Molecular Cell Biology and Immunology, Amsterdam University Medical Centre, Vrije Universiteit Amsterdam, Amsterdam, Netherlands
| | - Arlene B. Chapman
- Department of Medicine, Section of Nephrology, University of Chicago School of Medicine, Chicago, IL, USA
| | - Elliot L. Chaikof
- Department of Surgery, Center for Drug Discovery and Translational Research, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
- Wyss Institute of Biologically Inspired Engineering, Harvard University, Boston, MA, USA
| | - Richard D. Cummings
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
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3
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Takagi J, Aoki K, Turner BS, Lamont S, Lehoux S, Kavanaugh N, Gulati M, Valle Arevalo A, Lawrence TJ, Kim CY, Bakshi B, Ishihara M, Nobile CJ, Cummings RD, Wozniak DJ, Tiemeyer M, Hevey R, Ribbeck K. Mucin O-glycans are natural inhibitors of Candida albicans pathogenicity. Nat Chem Biol 2022; 18:762-773. [PMID: 35668191 PMCID: PMC7613833 DOI: 10.1038/s41589-022-01035-1] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Accepted: 04/11/2022] [Indexed: 12/13/2022]
Abstract
Mucins are large gel-forming polymers inside the mucus barrier that inhibit the yeast-to-hyphal transition of Candida albicans, a key virulence trait of this important human fungal pathogen. However, the molecular motifs in mucins that inhibit filamentation remain unclear despite their potential for therapeutic interventions. Here, we determined that mucins display an abundance of virulence-attenuating molecules in the form of mucin O-glycans. We isolated and cataloged >100 mucin O-glycans from three major mucosal surfaces and established that they suppress filamentation and related phenotypes relevant to infection, including surface adhesion, biofilm formation and cross-kingdom competition between C. albicans and the bacterium Pseudomonas aeruginosa. Using synthetic O-glycans, we identified three structures (core 1, core 1 + fucose and core 2 + galactose) that are sufficient to inhibit filamentation with potency comparable to the complex O-glycan pool. Overall, this work identifies mucin O-glycans as host molecules with untapped therapeutic potential to manage fungal pathogens.
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Affiliation(s)
- Julie Takagi
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA
- Department of Biology, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Kazuhiro Aoki
- Complex Carbohydrate Research Center, University of Georgia, Athens, GA, USA
| | - Bradley S Turner
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Sabrina Lamont
- Departments of Microbial Infection and Immunity, Microbiology, The Ohio State University, Columbus, OH, USA
| | - Sylvain Lehoux
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, National Center for Functional Glycomics, Boston, MA, USA
| | - Nicole Kavanaugh
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Megha Gulati
- Department of Molecular and Cell Biology, School of Natural Sciences, University of California Merced, Merced, CA, USA
- Molecular Cell, Cell Press, Cambridge, MA, USA
| | - Ashley Valle Arevalo
- Department of Molecular and Cell Biology, School of Natural Sciences, University of California Merced, Merced, CA, USA
- Quantitative and Systems Biology Graduate Program, University of California Merced, Merced, CA, USA
| | - Travis J Lawrence
- Department of Molecular and Cell Biology, School of Natural Sciences, University of California Merced, Merced, CA, USA
- Quantitative and Systems Biology Graduate Program, University of California Merced, Merced, CA, USA
- Oak Ridge National Laboratory, Oak Ridge, TN, USA
| | - Colin Y Kim
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Bhavya Bakshi
- Complex Carbohydrate Research Center, University of Georgia, Athens, GA, USA
| | - Mayumi Ishihara
- Complex Carbohydrate Research Center, University of Georgia, Athens, GA, USA
| | - Clarissa J Nobile
- Department of Molecular and Cell Biology, School of Natural Sciences, University of California Merced, Merced, CA, USA
- Health Sciences Research Institute, University of California Merced, Merced, CA, USA
| | - Richard D Cummings
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, National Center for Functional Glycomics, Boston, MA, USA
| | - Daniel J Wozniak
- Departments of Microbial Infection and Immunity, Microbiology, The Ohio State University, Columbus, OH, USA
| | - Michael Tiemeyer
- Complex Carbohydrate Research Center, University of Georgia, Athens, GA, USA
| | - Rachel Hevey
- Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland.
| | - Katharina Ribbeck
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA.
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4
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Williams SE, Noel M, Lehoux S, Cetinbas M, Xavier RJ, Sadreyev RI, Scolnick EM, Smoller JW, Cummings RD, Mealer RG. Mammalian brain glycoproteins exhibit diminished glycan complexity compared to other tissues. Nat Commun 2022; 13:275. [PMID: 35022400 PMCID: PMC8755730 DOI: 10.1038/s41467-021-27781-9] [Citation(s) in RCA: 32] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Accepted: 12/08/2021] [Indexed: 01/14/2023] Open
Abstract
Glycosylation is essential to brain development and function, but prior studies have often been limited to a single analytical technique and excluded region- and sex-specific analyses. Here, using several methodologies, we analyze Asn-linked and Ser/Thr/Tyr-linked protein glycosylation between brain regions and sexes in mice. Brain N-glycans are less complex in sequence and variety compared to other tissues, consisting predominantly of high-mannose and fucosylated/bisected structures. Most brain O-glycans are unbranched, sialylated O-GalNAc and O-mannose structures. A consistent pattern is observed between regions, and sex differences are minimal compared to those in plasma. Brain glycans correlate with RNA expression of their synthetic enzymes, and analysis of glycosylation genes in humans show a global downregulation in the brain compared to other tissues. We hypothesize that this restricted repertoire of protein glycans arises from their tight regulation in the brain. These results provide a roadmap for future studies of glycosylation in neurodevelopment and disease.
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Affiliation(s)
- Sarah E Williams
- Psychiatric and Neurodevelopmental Genetics Unit, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
- Nash Family Department of Neuroscience, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Maxence Noel
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Sylvain Lehoux
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Murat Cetinbas
- Department of Molecular Biology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Ramnik J Xavier
- Department of Molecular Biology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
- Center for Computational and Integrative Biology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Ruslan I Sadreyev
- Department of Molecular Biology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Edward M Scolnick
- Psychiatric and Neurodevelopmental Genetics Unit, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
- The Stanley Center for Psychiatric Research at Broad Institute of Harvard/MIT, Cambridge, MA, USA
| | - Jordan W Smoller
- Psychiatric and Neurodevelopmental Genetics Unit, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
- The Stanley Center for Psychiatric Research at Broad Institute of Harvard/MIT, Cambridge, MA, USA
- Center for Precision Psychiatry, Department of Psychiatry, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Richard D Cummings
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Robert G Mealer
- Psychiatric and Neurodevelopmental Genetics Unit, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA.
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA.
- The Stanley Center for Psychiatric Research at Broad Institute of Harvard/MIT, Cambridge, MA, USA.
- Center for Precision Psychiatry, Department of Psychiatry, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA.
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5
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Ezeabikwa B, Mondal N, Antonopoulos A, Haslam SM, Matsumoto Y, Martin-Caraballo M, Lehoux S, Mandalasi M, Ishaque A, Heimburg-Molinaro J, Cummings RD, Nyame AK. Major differences in glycosylation and Fucosyltransferase expression in low-grade versus high-grade bladder cancer cell lines. Glycobiology 2021; 31:1444-1463. [PMID: 34350945 DOI: 10.1093/glycob/cwab083] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Revised: 05/28/2021] [Accepted: 06/11/2021] [Indexed: 11/14/2022] Open
Abstract
Bladder cancer is the ninth most frequently diagnosed cancer worldwide, and there is a need to develop new biomarkers for staging and prognosis of this disease. Here we report that cell lines derived from low-grade and high-grade bladder cancers exhibit major differences in expression of glycans in surface glycoproteins. We analyzed protein glycosylation in three low-grade bladder cancer cell lines RT4 (grade-1-2), 5637 (grade-2), and SW780 (grade-1), and three high-grade bladder cancer cell lines J82COT (grade-3), T24 (grade-3), and TCCSUP (grade-4), with primary bladder epithelial cells, A/T/N, serving as a normal bladder cell control. Using a variety of approaches including flow cytometry, immunofluorescence, glycomics, and gene expression analysis, we observed that the low-grade bladder cancer cell lines RT4, 5637, and SW780 express high levels of the fucosylated Lewis x (Lex) antigen (CD15) (Galβ1-4(Fucα1-3) GlcNAcβ1-R), while normal bladder epithelial A/T/N cells lack Lex expression. T24 and TCCSUP cells also lack Lex, whereas J82COT cells express low levels of Lex. Glycomics analyses revealed other major differences in fucosylation and sialylation of N-glycans between these cell types. O-glycans are highly differentiated, as RT4 cells synthesize core 2-based O-glycans that are lacking in the T24 cells. These differences in glycan expression correlated with differences in RNA expression levels of their cognate glycosyltransferases, including α1-3/4-fucosyltransferase genes. These major differences in glycan structures and gene expression profiles between low- and high-grade bladder cancer cells suggest that glycans and glycosyltransferases are candidate biomarkers for grading bladder cancers.
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Affiliation(s)
- Bernadette Ezeabikwa
- Department of Natural Sciences, University of Maryland Eastern Shore, Princess Anne, MD
| | - Nandini Mondal
- Department of Surgery, Beth Israel Deaconess Medical Center - Harvard Medical School, Boston, MA
| | | | - Stuart M Haslam
- Department of Life Sciences, Imperial College London SW7 2AZ, UK
| | - Yasuyuki Matsumoto
- Department of Surgery, Beth Israel Deaconess Medical Center - Harvard Medical School, Boston, MA
| | - Miguel Martin-Caraballo
- Department of Pharmaceutical Sciences, School of Pharmacy, University of Maryland Eastern Shore, Princess Anne, MD
| | - Sylvain Lehoux
- Department of Surgery, Beth Israel Deaconess Medical Center - Harvard Medical School, Boston, MA
| | - Msano Mandalasi
- Department of Natural Sciences, University of Maryland Eastern Shore, Princess Anne, MD
| | - Ali Ishaque
- Department of Natural Sciences, University of Maryland Eastern Shore, Princess Anne, MD
| | - Jamie Heimburg-Molinaro
- Department of Surgery, Beth Israel Deaconess Medical Center - Harvard Medical School, Boston, MA
| | - Richard D Cummings
- Department of Surgery, Beth Israel Deaconess Medical Center - Harvard Medical School, Boston, MA
| | - Anthony K Nyame
- Department of Natural Sciences, University of Maryland Eastern Shore, Princess Anne, MD
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6
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Rey N, Ebrahimian T, Gloaguen C, Kereselidze D, Magneron V, Bontemps CA, Demarquay C, Olsson G, Haghdoost S, Lehoux S, Ebrahimian TG. Exposure to Low to Moderate Doses of Ionizing Radiation Induces A Reduction of Pro-Inflammatory Ly6chigh Monocytes and a U-Curved Response of T Cells in APOE -/- Mice. Dose Response 2021; 19:15593258211016237. [PMID: 34163310 PMCID: PMC8191078 DOI: 10.1177/15593258211016237] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Revised: 04/08/2021] [Accepted: 04/15/2021] [Indexed: 12/31/2022] Open
Abstract
Low dose ionizing radiation (LDIR) is known to have a protective effect on atherosclerosis in rodent studies, but how it impacts different cells types involved in lesion formation remains incompletely understood. We investigated the immunomodulatory response of different doses and dose-rates of irradiation in ApoE-/- mice. Mice were exposed to external γ rays at very low (1.4 mGy.h-1) or low (50 mGy.h-1) dose-rates, with cumulative doses spanning 50 to 1000 mGy. Flow cytometry of circulating cells revealed a significant decrease in pro-inflammatory Ly6CHi monocytes at all cumulative doses at low dose-rate, but more disparate effects at very low dose-rate with reductions in Ly6CHi cells at doses of 50, 100 and 750 mGy only. In contrast, Ly6CLo monocytes were not affected by LDIR. Similarly, proportions of CD4+ T cell subsets in the spleen did not differ between irradiated mice and non-irradiated controls, whether assessing CD25+FoxP3+ regulatory or CD69+ activated lymphocytes. In the aorta, gene expression of cytokines such as IL-1 and TGF-ß and adhesion molecules such as E-Selectin, ICAM-1, and VCAM-1 were reduced at the intermediate dose of 200 mGy. These results suggest that LDIR may reduce atherosclerotic plaque formation by selectively reducing blood pro-inflammatory monocytes and by impairing adhesion molecule expression and inflammatory processes in the vessel wall. In contrast, splenic T lymphocytes were not affected by LDIR. Furthermore, some responses to irradiation were nonlinear; reductions in aortic gene expression were significant at intermediate doses, but not at either highest or lowest doses. This work furthers our understanding of the impact of LDIR with different dose-rates on immune system response in the context of atherosclerosis.
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Affiliation(s)
- N Rey
- IRSN, Institut de Radioprotection et de Sûreté Nucléaire, Laboratoire de Radiotoxicologie et Radiobiologie Experimentale, Fontenay-aux-Roses, France
| | - T Ebrahimian
- Lady Davis Institute, McGill University, Montreal, Canada
| | - C Gloaguen
- IRSN, Institut de Radioprotection et de Sûreté Nucléaire, Laboratoire de Radiotoxicologie et Radiobiologie Experimentale, Fontenay-aux-Roses, France
| | - D Kereselidze
- IRSN, Institut de Radioprotection et de Sûreté Nucléaire, Laboratoire de Radiotoxicologie et Radiobiologie Experimentale, Fontenay-aux-Roses, France
| | - V Magneron
- IRSN, Institut de Radioprotection et de Sûreté Nucléaire, Laboratoire de Radiotoxicologie et Radiobiologie Experimentale, Fontenay-aux-Roses, France
| | - C A Bontemps
- IRSN, Institut de Radioprotection et de Sûreté Nucléaire, Laboratoire de Radiotoxicologie et Radiobiologie Experimentale, Fontenay-aux-Roses, France
| | - C Demarquay
- IRSN, Institut de Radioprotection et de Sûreté Nucléaire, Laboratoire de Radiotoxicologie et Radiobiologie Experimentale, Fontenay-aux-Roses, France
| | - G Olsson
- Department of Molecular Biosciences, The Wenner-Gren Institute, Stockholm University, Stockholm, Sweden
| | - S Haghdoost
- Department of Molecular Biosciences, The Wenner-Gren Institute, Stockholm University, Stockholm, Sweden.,University of Caen Normandie, Aria/Cimap, GANIL, Campus Jules Horowitz, Caen, France
| | - S Lehoux
- Lady Davis Institute, McGill University, Montreal, Canada
| | - Teni G Ebrahimian
- IRSN, Institut de Radioprotection et de Sûreté Nucléaire, Laboratoire de Radiotoxicologie et Radiobiologie Experimentale, Fontenay-aux-Roses, France
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7
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Bhargava R, Lehoux S, Maeda K, Tsokos MG, Krishfield S, Ellezian L, Pollak M, Stillman IE, Cummings RD, Tsokos GC. Aberrantly glycosylated IgG elicits pathogenic signaling in podocytes and signifies lupus nephritis. JCI Insight 2021; 6:147789. [PMID: 33784256 PMCID: PMC8262331 DOI: 10.1172/jci.insight.147789] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Accepted: 03/25/2021] [Indexed: 12/27/2022] Open
Abstract
Lupus nephritis (LN) is a serious complication occurring in 50% of patients with systemic lupus erythematosus (SLE) for which there is a lack of biomarkers, a lack of specific medications, and a lack of a clear understanding of its pathogenesis. The expression of calcium/calmodulin kinase IV (CaMK4) is increased in podocytes of patients with LN and lupus-prone mice, and its podocyte-targeted inhibition averts the development of nephritis in mice. Nephrin is a key podocyte molecule essential for the maintenance of the glomerular slit diaphragm. Here, we show that the presence of fucose on N-glycans of IgG induces, whereas the presence of galactose ameliorates, podocyte injury through CaMK4 expression. Mechanistically, CaMK4 phosphorylates NF-κB, upregulates the transcriptional repressor SNAIL, and limits the expression of nephrin. In addition, we demonstrate that increased expression of CaMK4 in biopsy specimens and in urine podocytes from people with LN is linked to active kidney disease. Our data shed light on the role of IgG glycosylation in the development of podocyte injury and propose the development of “liquid kidney biopsy” approaches to diagnose LN.
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Affiliation(s)
| | - Sylvain Lehoux
- Department of Surgery, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, Massachusetts, USA.,Beth Israel Deaconess Medical Center Glycomics Core, Boston, Massachusetts, USA
| | | | | | | | | | | | - Isaac E Stillman
- Department of Pathology, Beth Israel Deaconess Medical Center, Boston, Massachusetts, USA
| | - Richard D Cummings
- Department of Surgery, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, Massachusetts, USA.,Beth Israel Deaconess Medical Center Glycomics Core, Boston, Massachusetts, USA
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8
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Wang BX, Wheeler KM, Cady KC, Lehoux S, Cummings RD, Laub MT, Ribbeck K. Mucin Glycans Signal through the Sensor Kinase RetS to Inhibit Virulence-Associated Traits in Pseudomonas aeruginosa. Curr Biol 2021; 31:90-102.e7. [DOI: 10.1016/j.cub.2020.09.088] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Revised: 08/29/2020] [Accepted: 09/29/2020] [Indexed: 12/12/2022]
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9
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Matsumoto Y, Kudelka MR, Hanes MS, Lehoux S, Dutta S, Jones MB, Stackhouse KA, Cervoni GE, Heimburg-Molinaro J, Smith DF, Ju T, Chaikof EL, Cummings RD. Identification of Tn antigen O-GalNAc-expressing glycoproteins in human carcinomas using novel anti-Tn recombinant antibodies. Glycobiology 2020; 30:282-300. [PMID: 31742337 DOI: 10.1093/glycob/cwz095] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Revised: 10/08/2019] [Accepted: 11/02/2019] [Indexed: 12/14/2022] Open
Abstract
The Tn antigen is a neoantigen abnormally expressed in many human carcinomas and expression correlates with metastasis and poor survival. To explore its biomarker potential, new antibodies are needed that specifically recognize this antigen in tumors. Here we generated two recombinant antibodies to the Tn antigen, Remab6 as a chimeric human IgG1 antibody and ReBaGs6 as a murine IgM antibody and characterized their specificities using multiple biochemical and biological approaches. Both Remab6 and ReBaGs6 recognize clustered Tn structures, but most importantly do not recognize glycoforms of human IgA1 that contain potential cross-reactive Tn antigen structures. In flow cytometry and immunofluorescence analyses, Remab6 recognizes human cancer cell lines expressing the Tn antigen, but not their Tn-negative counterparts. In immunohistochemistry (IHC), Remab6 stains many human cancers in tissue array format but rarely stains normal tissues and then mostly intracellularly. We used these antibodies to identify several unique Tn-containing glycoproteins in Tn-positive Colo205 cells, indicating their utility for glycoproteomics in future biomarker studies. Thus, recombinant Remab6 and ReBaGs6 are useful for biochemical characterization of cancer cells and IHC of tumors and represent promising tools for Tn biomarker discovery independently of recognition of IgA1.
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Affiliation(s)
- Yasuyuki Matsumoto
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, CLS 11090, 3 Blackfan Circle, Boston, MA 02115, USA
| | - Matthew R Kudelka
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, CLS 11090, 3 Blackfan Circle, Boston, MA 02115, USA.,Department of Biochemistry, Emory University School of Medicine, 1518 Clifton Rd, Atlanta, GA 30322, USA
| | - Melinda S Hanes
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, CLS 11090, 3 Blackfan Circle, Boston, MA 02115, USA
| | - Sylvain Lehoux
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, CLS 11090, 3 Blackfan Circle, Boston, MA 02115, USA
| | - Sucharita Dutta
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, CLS 11090, 3 Blackfan Circle, Boston, MA 02115, USA
| | - Mark B Jones
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, CLS 11090, 3 Blackfan Circle, Boston, MA 02115, USA
| | - Kathryn A Stackhouse
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, CLS 11090, 3 Blackfan Circle, Boston, MA 02115, USA
| | - Gabrielle E Cervoni
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, CLS 11090, 3 Blackfan Circle, Boston, MA 02115, USA
| | - Jamie Heimburg-Molinaro
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, CLS 11090, 3 Blackfan Circle, Boston, MA 02115, USA
| | - David F Smith
- Department of Biochemistry, Emory University School of Medicine, 1518 Clifton Rd, Atlanta, GA 30322, USA
| | - Tongzhong Ju
- Department of Biochemistry, Emory University School of Medicine, 1518 Clifton Rd, Atlanta, GA 30322, USA.,Office of Biotechnology Products, Center for Drug Evaluation and Research, Food and Drug Administration, Bldg 52/72, Room 2120, 10903 New Hampshire Ave, Silver Spring, MD 20993, USA
| | - Elliot L Chaikof
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, CLS 11090, 3 Blackfan Circle, Boston, MA 02115, USA
| | - Richard D Cummings
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, CLS 11090, 3 Blackfan Circle, Boston, MA 02115, USA.,Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, CLS 11087, 3 Blackfan Circle, Boston, MA 02115, USA
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10
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Matsumoto Y, Kudelka MR, Hanes MS, Lehoux S, Dutta S, Jones MB, Stackhouse KA, Cervoni GE, Heimburg-Molinaro J, Smith DF, Ju T, Chaikof EL, Cummings RD. Erratum to: Identification of Tn antigen O-GalNAc-expressing glycoproteins in human carcinomas using novel anti-Tn recombinant antibodies. Glycobiology 2020; 30:1015. [PMID: 32415964 DOI: 10.1093/glycob/cwaa044] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Revised: 10/08/2019] [Accepted: 11/02/2019] [Indexed: 11/13/2022] Open
Affiliation(s)
- Yasuyuki Matsumoto
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, CLS 11090, 3 Blackfan Circle, Boston, MA 02115, USA
| | - Matthew R Kudelka
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, CLS 11090, 3 Blackfan Circle, Boston, MA 02115, USA.,Department of Biochemistry, Emory University School of Medicine, 1518 Clifton Rd, Atlanta, GA 30322, USA
| | - Melinda S Hanes
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, CLS 11090, 3 Blackfan Circle, Boston, MA 02115, USA
| | - Sylvain Lehoux
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, CLS 11090, 3 Blackfan Circle, Boston, MA 02115, USA
| | - Sucharita Dutta
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, CLS 11090, 3 Blackfan Circle, Boston, MA 02115, USA
| | - Mark B Jones
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, CLS 11090, 3 Blackfan Circle, Boston, MA 02115, USA
| | - Kathryn A Stackhouse
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, CLS 11090, 3 Blackfan Circle, Boston, MA 02115, USA
| | - Gabrielle E Cervoni
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, CLS 11090, 3 Blackfan Circle, Boston, MA 02115, USA
| | - Jamie Heimburg-Molinaro
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, CLS 11090, 3 Blackfan Circle, Boston, MA 02115, USA
| | - David F Smith
- Department of Biochemistry, Emory University School of Medicine, 1518 Clifton Rd, Atlanta, GA 30322, USA
| | - Tongzhong Ju
- Department of Biochemistry, Emory University School of Medicine, 1518 Clifton Rd, Atlanta, GA 30322, USA.,Office of Biotechnology Products, Center for Drug Evaluation and Research, Food and Drug Administration, Bldg 52/72, Room 2120, 10903 New Hampshire Ave, Silver Spring, MD 20993, USA
| | - Elliot L Chaikof
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, CLS 11090, 3 Blackfan Circle, Boston, MA 02115, USA
| | - Richard D Cummings
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, CLS 11090, 3 Blackfan Circle, Boston, MA 02115, USA.,Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, CLS 11087, 3 Blackfan Circle, Boston, MA 02115, USA
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11
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Sumanth MS, Jacob SP, Abhilasha KV, Manne BK, Basrur V, Lehoux S, Campbell RA, Yost CC, McIntyre TM, Cummings RD, Weyrich AS, Rondina MT, Marathe GK. Different glycoforms of alpha-1-acid glycoprotein contribute to its functional alterations in platelets and neutrophils. J Leukoc Biol 2020; 109:915-930. [PMID: 33070381 DOI: 10.1002/jlb.3a0720-422r] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Revised: 09/18/2020] [Accepted: 09/30/2020] [Indexed: 12/23/2022] Open
Abstract
Alpha-1-acid glycoprotein (AGP-1) is a positive acute phase glycoprotein with uncertain functions. Serum AGP-1 (sAGP-1) is primarily derived from hepatocytes and circulates as 12-20 different glycoforms. We isolated a glycoform secreted from platelet-activating factor (PAF)-stimulated human neutrophils (nAGP-1). Its peptide sequence was identical to hepatocyte-derived sAGP-1, but nAGP-1 differed from sAGP-1 in its chromatographic behavior, electrophoretic mobility, and pattern of glycosylation. The function of these 2 glycoforms also differed. sAGP-1 activated neutrophil adhesion, migration, and neutrophil extracellular traps (NETosis) involving myeloperoxidase, peptidylarginine deiminase 4, and phosphorylation of ERK in a dose-dependent fashion, whereas nAGP-1 was ineffective as an agonist for these events. Furthermore, sAGP-1, but not nAGP-1, inhibited LPS-stimulated NETosis. Interestingly, nAGP-1 inhibited sAGP-1-stimulated neutrophil NETosis. The discordant effect of the differentially glycosylated AGP-1 glycoforms was also observed in platelets where neither of the AGP-1 glycoforms alone stimulated aggregation of washed human platelets, but sAGP-1, and not nAGP-1, inhibited aggregation induced by PAF or ADP, but not by thrombin. These functional effects of sAGP-1 correlated with intracellular cAMP accumulation and phosphorylation of the protein kinase A substrate vasodilator-stimulated phosphoprotein and reduction of Akt, ERK, and p38 phosphorylation. Thus, the sAGP-1 glycoform limits platelet reactivity, whereas nAGP-1 glycoform also limits proinflammatory actions of sAGP-1. These studies identify new functions for this acute phase glycoprotein and demonstrate that the glycosylation of AGP-1 controls its effects on 2 critical cells of acute inflammation.
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Affiliation(s)
- Mosale Seetharam Sumanth
- Department of Studies in Biochemistry, University of Mysore, Manasagangothri, Mysuru, Karnataka, India
| | - Shancy P Jacob
- Department of Pediatrics, Division of Allergy and Immunology, University of Utah, Salt Lake City, Utah, USA
| | | | - Bhanu Kanth Manne
- Molecular Medicine Program, and Department of Internal Medicine and Pathology, University of Utah, Salt Lake City, Utah, USA
| | - Venkatesha Basrur
- Department of Pathology, University of Michigan Medical School, Ann Arbor, Michigan, USA
| | - Sylvain Lehoux
- Beth Israel Deaconess Medical Center, Department of Surgery, Harvard Medical School, Boston, Massachusetts, USA
| | - Robert A Campbell
- Molecular Medicine Program, and Department of Internal Medicine and Pathology, University of Utah, Salt Lake City, Utah, USA
| | - Christian C Yost
- Molecular Medicine Program, and Department of Internal Medicine and Pathology, University of Utah, Salt Lake City, Utah, USA.,Department of Pediatrics, University of Utah, Salt Lake City, Utah, USA
| | - Thomas M McIntyre
- Department of Cardiovascular & Metabolic Sciences, Cleveland Clinic Lerner Research Institute, Cleveland, Ohio, USA
| | - Richard D Cummings
- Beth Israel Deaconess Medical Center, Department of Surgery, Harvard Medical School, Boston, Massachusetts, USA
| | - Andrew S Weyrich
- Molecular Medicine Program, and Department of Internal Medicine and Pathology, University of Utah, Salt Lake City, Utah, USA
| | - Matthew T Rondina
- Molecular Medicine Program, and Department of Internal Medicine and Pathology, University of Utah, Salt Lake City, Utah, USA.,The Geriatric Research Education and Clinical Center, Salt Lake City, Utah, USA.,Department of Internal Medicine, George E. Wahlen VAMC, Salt Lake City, Utah, USA
| | - Gopal K Marathe
- Department of Studies in Biochemistry, University of Mysore, Manasagangothri, Mysuru, Karnataka, India.,Department of Studies in Molecular Biology, University of Mysore, Manasagangothri, Mysuru, Karnataka, India
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12
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Zeng J, Eljalby M, Aryal RP, Lehoux S, Stavenhagen K, Kudelka MR, Wang Y, Wang J, Ju T, von Andrian UH, Cummings RD. Cosmc controls B cell homing. Nat Commun 2020; 11:3990. [PMID: 32778659 PMCID: PMC7417590 DOI: 10.1038/s41467-020-17765-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2019] [Accepted: 07/17/2020] [Indexed: 12/15/2022] Open
Abstract
The molecular mechanisms regulating lymphocyte homing into lymph nodes are only partly understood. Here, we report that B cell-specific deletion of the X-linked gene, Cosmc, and the consequent decrease of protein O-glycosylation, induces developmental blocks of mouse B cells. After transfer into wild-type recipient, Cosmc-null B cells fail to home to lymph nodes as well as non-lymphoid organs. Enzymatic desialylation of wild-type B cells blocks their migration into lymph nodes, indicating a requirement of sialylated O-glycans for proper trafficking. Mechanistically, Cosmc-deficient B cells have normal rolling and firm arrest on high endothelium venules (HEV), thereby attributing their inefficient trafficking to alterations in the subsequent transendothelial migration step. Finally, Cosmc-null B cells have defective chemokine signaling responses. Our results thus demonstrate that Cosmc and its effects on O-glycosylation are important for controlling B cell homing.
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Affiliation(s)
- Junwei Zeng
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Mahmoud Eljalby
- Department of Microbiology & Immunobiology, Harvard Medical School, Boston, MA, USA
| | - Rajindra P Aryal
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Sylvain Lehoux
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Kathrin Stavenhagen
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Matthew R Kudelka
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
- Department of Biochemistry, Emory University, Atlanta, GA, USA
| | - Yingchun Wang
- Department of Biochemistry, Emory University, Atlanta, GA, USA
| | - Jianmei Wang
- Department of Biochemistry, Emory University, Atlanta, GA, USA
| | - Tongzhong Ju
- Department of Biochemistry, Emory University, Atlanta, GA, USA
- Office of Biotechnology Products, Center for Drug Evaluation and Research, U. S. Food and Drug Administration, Silver Spring, MD, 20993, USA
| | - Ulrich H von Andrian
- Department of Microbiology & Immunobiology, Harvard Medical School, Boston, MA, USA
- The Ragon Institute of MGH, MIT & Harvard, Cambridge, MA, USA
| | - Richard D Cummings
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA.
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13
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Mealer RG, Jenkins BG, Chen CY, Daly MJ, Ge T, Lehoux S, Marquardt T, Palmer CD, Park JH, Parsons PJ, Sackstein R, Williams SE, Cummings RD, Scolnick EM, Smoller JW. The schizophrenia risk locus in SLC39A8 alters brain metal transport and plasma glycosylation. Sci Rep 2020; 10:13162. [PMID: 32753748 PMCID: PMC7403432 DOI: 10.1038/s41598-020-70108-9] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Accepted: 07/20/2020] [Indexed: 12/15/2022] Open
Abstract
A common missense variant in SLC39A8 is convincingly associated with schizophrenia and several additional phenotypes. Homozygous loss-of-function mutations in SLC39A8 result in undetectable serum manganese (Mn) and a Congenital Disorder of Glycosylation (CDG) due to the exquisite sensitivity of glycosyltransferases to Mn concentration. Here, we identified several Mn-related changes in human carriers of the common SLC39A8 missense allele. Analysis of structural brain MRI scans showed a dose-dependent change in the ratio of T2w to T1w signal in several regions. Comprehensive trace element analysis confirmed a specific reduction of only serum Mn, and plasma protein N-glycome profiling revealed reduced complexity and branching. N-glycome profiling from two individuals with SLC39A8-CDG showed similar but more severe alterations in branching that improved with Mn supplementation, suggesting that the common variant exists on a spectrum of hypofunction with potential for reversibility. Characterizing the functional impact of this variant will enhance our understanding of schizophrenia pathogenesis and identify novel therapeutic targets and biomarkers.
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Affiliation(s)
- Robert G Mealer
- Psychiatric and Neurodevelopmental Genetics Unit, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA.
- The Stanley Center for Psychiatric Research at Broad Institute of Harvard/MIT, Cambridge, MA, USA.
- National Center for Functional Glycomics, Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA.
| | - Bruce G Jenkins
- Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA, USA
| | - Chia-Yen Chen
- Psychiatric and Neurodevelopmental Genetics Unit, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
- The Stanley Center for Psychiatric Research at Broad Institute of Harvard/MIT, Cambridge, MA, USA
- Analytic and Translational Genetics Unit, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Mark J Daly
- The Stanley Center for Psychiatric Research at Broad Institute of Harvard/MIT, Cambridge, MA, USA
- Analytic and Translational Genetics Unit, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Tian Ge
- Psychiatric and Neurodevelopmental Genetics Unit, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
- The Stanley Center for Psychiatric Research at Broad Institute of Harvard/MIT, Cambridge, MA, USA
- Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA, USA
| | - Sylvain Lehoux
- National Center for Functional Glycomics, Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Thorsten Marquardt
- Klinik und Poliklinik für Kinder- und Jugendmedizin-Allgemeine Pädiatrie, Universitätsklinikum Münster, Münster, Germany
| | - Christopher D Palmer
- Laboratory of Inorganic and Nuclear Chemistry, Wadsworth Center, New York State Department of Health, Albany, NY, USA
- Department of Environmental Health Sciences, School of Public Health, University at Albany, Albany, NY, USA
| | - Julien H Park
- Klinik und Poliklinik für Kinder- und Jugendmedizin-Allgemeine Pädiatrie, Universitätsklinikum Münster, Münster, Germany
| | - Patrick J Parsons
- Laboratory of Inorganic and Nuclear Chemistry, Wadsworth Center, New York State Department of Health, Albany, NY, USA
- Department of Environmental Health Sciences, School of Public Health, University at Albany, Albany, NY, USA
| | - Robert Sackstein
- Department of Translational Medicine, Herbert Wertheim College of Medicine, Florida International University, Miami, FL, USA
| | - Sarah E Williams
- Psychiatric and Neurodevelopmental Genetics Unit, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
- National Center for Functional Glycomics, Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Richard D Cummings
- National Center for Functional Glycomics, Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Edward M Scolnick
- The Stanley Center for Psychiatric Research at Broad Institute of Harvard/MIT, Cambridge, MA, USA
| | - Jordan W Smoller
- Psychiatric and Neurodevelopmental Genetics Unit, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
- The Stanley Center for Psychiatric Research at Broad Institute of Harvard/MIT, Cambridge, MA, USA
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14
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Brazil JC, Kelm M, Lehoux S, Azcutia V, Cummings RD, Nusrat A, Parkos CA. Regulation of Neutrophil Function by Selective Targeting of Glycan Epitopes Expressed on the Integrin CD11b/CD18. FASEB J 2020. [DOI: 10.1096/fasebj.2020.34.s1.04566] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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15
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Kelm M, Lehoux S, Azcutia V, Cummings RD, Nusrat A, Parkos CA, Brazil JC. Regulation of neutrophil function by selective targeting of glycan epitopes expressed on the integrin CD11b/CD18. FASEB J 2019; 34:2326-2343. [PMID: 31907993 DOI: 10.1096/fj.201902542r] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2019] [Revised: 11/25/2019] [Accepted: 11/25/2019] [Indexed: 12/30/2022]
Abstract
Polymorphonuclear neutrophils (PMNs) play a critical role in the innate immune response to invading pathogens. However, dysregulated mucosal trafficking of PMNs and associated epithelial tissue damage is a pathological hallmark of numerous inflammatory conditions including inflammatory bowel disease. The glycoprotein CD11b/CD18 plays a well-described role in regulating PMN transepithelial migration and PMN inflammatory functions. Previous studies have demonstrated that targeting of the N-linked glycan Lewis X on CD11b blocks PMN transepithelial migration (TEpM). Given evidence of glycosylation-dependent regulation of CD11b/CD18 function, we performed MALDI TOF Mass Spectrometry (MS) analyses on CD11b/CD18 purified from human PMNs. Unusual glycan epitopes identified on CD11b/CD18 included high Mannose oligosaccharides recognized by the Galanthus Nivalis lectin and biantennary galactosylated N-glycans recognized by the Phaseolus Vulgaris erythroagglutinin lectin. Importantly, we show that selective targeting of glycans on CD11b with such lectins results in altered intracellular signaling events that inhibit TEpM and differentially affect key PMN inflammatory functions including phagocytosis, superoxide release and apoptosis. Taken together, these data demonstrate that discrete glycan motifs expressed on CD11b/CD18 such as biantennary galactose could represent novel targets for selective manipulation of CD11b function and reduction of PMN-associated tissue damage in chronic inflammatory diseases.
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Affiliation(s)
- Matthias Kelm
- Department of Pathology, University of Michigan, Ann Arbor, MI, USA
| | - Sylvain Lehoux
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Veronica Azcutia
- Department of Pathology, University of Michigan, Ann Arbor, MI, USA
| | - Richard D Cummings
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Asma Nusrat
- Department of Pathology, University of Michigan, Ann Arbor, MI, USA
| | - Charles A Parkos
- Department of Pathology, University of Michigan, Ann Arbor, MI, USA
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16
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Tuccinardi D, Farr OM, Upadhyay J, Oussaada SM, Klapa MI, Candela M, Rampelli S, Lehoux S, Lázaro I, Sala-Vila A, Brigidi P, Cummings RD, Mantzoros CS. Mechanisms underlying the cardiometabolic protective effect of walnut consumption in obese people: A cross-over, randomized, double-blind, controlled inpatient physiology study. Diabetes Obes Metab 2019; 21:2086-2095. [PMID: 31087608 PMCID: PMC6684390 DOI: 10.1111/dom.13773] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/12/2019] [Revised: 05/05/2019] [Accepted: 05/09/2019] [Indexed: 12/27/2022]
Abstract
AIMS To assess the effects of walnuts on cardiometabolic outcomes in obese people and to explore the underlying mechanisms using novel methods including metabolomic, lipidomic, glycomic and microbiome analysis, integrated with lipid particle fractionation, appetite-regulating hormones and haemodynamic measurements. MATERIALS AND METHODS A total of 10 obese individuals were enrolled in this cross-over, randomized, double-blind, placebo-controlled clinical trial. The participants had two 5-day inpatient stays, during which they consumed a smoothie containing 48 g walnuts or a macronutrient-matched placebo smoothie without nuts, with a 1-month washout period between the two visits. RESULTS Walnut consumption improved aspects of the lipid profile; it reduced fasting small and dense LDL particles (P < 0.02) and increased postprandial large HDL particles (P < 0.01). Lipoprotein insulin resistance score, glucose and the insulin area under the curve (AUC) decreased significantly after walnut consumption (P < 0.01, P < 0.02 and P < 0.04, respectively). Consuming walnuts significantly increased 10 N-glycans, with eight of them carrying a fucose core. Lipidomic analysis showed a robust reduction in harmful ceramides, hexosylceramides and sphingomyelins, which have been shown to mediate effects on cardiometabolic risk. The peptide YY AUC significantly increased after walnut consumption (P < 0.03). No major significant changes in haemodynamic or metabolomic analysis or in microbiome host health-promoting bacteria such as Faecalibacterium were found. CONCLUSIONS These data provide a more comprehensive mechanistic perspective of the effect of dietary walnut consumption on cardiometabolic variables. Lipidomic and lipid nuclear magnetic resonance spectroscopy analysis showed an early but significant reduction in ceramides and other atherogenic lipids with walnut consumption, which may explain the longer-term benefits of walnuts or other nuts on insulin resistance, cardiovascular risk and mortality.
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Affiliation(s)
- Dario Tuccinardi
- Division of Endocrinology, Department of Medicine, Beth Israel Deaconess Medical Centre/Harvard Medical School, Boston, Massachusetts
- Unit of Endocrinology and Diabetes, Department of Medicine, Campus Bio-Medico University of Rome, Rome, Italy
| | - Olivia M Farr
- Division of Endocrinology, Department of Medicine, Beth Israel Deaconess Medical Centre/Harvard Medical School, Boston, Massachusetts
| | - Jagriti Upadhyay
- Division of Endocrinology, Department of Medicine, Beth Israel Deaconess Medical Centre/Harvard Medical School, Boston, Massachusetts
| | - Sabrina M Oussaada
- Division of Endocrinology, Department of Medicine, Beth Israel Deaconess Medical Centre/Harvard Medical School, Boston, Massachusetts
| | - Maria I Klapa
- Department of Chemical & Biomolecular Engineering & Bioengineering, Metabolic Engineering and Systems Biology Laboratory, Institute of Chemical Engineering Sciences, Foundation for Research and Technology-Hellas, Patras, Greece
| | - Marco Candela
- Department of Pharmacy and Biotechnology, University of Bologna, Bologna, Italy
| | - Simone Rampelli
- Department of Pharmacy and Biotechnology, University of Bologna, Bologna, Italy
| | - Sylvain Lehoux
- Department of Surgery, Beth Israel Deaconess Medical Centre, Harvard Medical School, Boston, Massachusetts
- Department of Surgery, Beth Israel Deaconess Medical Centre Glycomics Core, Boston, Massachusetts
| | - Iolanda Lázaro
- CIBERde Fisiopatología de la Obesidad y la Nutrición (CIBEROBN), Instituto de Salud Carlos III, Madrid, Spain
- Lipid Clinic, Department of Endocrinology and Nutrition, Institut d'Investigacions Biomediques August PiSunyer (IDIBAPS), Hospital Clinic, University of Barcelona, Barcelona, Spain
| | - Aleix Sala-Vila
- CIBERde Fisiopatología de la Obesidad y la Nutrición (CIBEROBN), Instituto de Salud Carlos III, Madrid, Spain
- Lipid Clinic, Department of Endocrinology and Nutrition, Institut d'Investigacions Biomediques August PiSunyer (IDIBAPS), Hospital Clinic, University of Barcelona, Barcelona, Spain
| | - Patrizia Brigidi
- Department of Pharmacy and Biotechnology, University of Bologna, Bologna, Italy
| | - Richard D Cummings
- Department of Pharmacy and Biotechnology, University of Bologna, Bologna, Italy
| | - Christos S Mantzoros
- Division of Endocrinology, Department of Medicine, Beth Israel Deaconess Medical Centre/Harvard Medical School, Boston, Massachusetts
- Section of Endocrinology, Department of Medicine, VA Boston Healthcare System, Boston, Massachusetts
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17
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Pettinato G, Lehoux S, Ramanathan R, Salem MM, He LX, Muse O, Flaumenhaft R, Thompson MT, Rouse EA, Cummings RD, Wen X, Fisher RA. Generation of fully functional hepatocyte-like organoids from human induced pluripotent stem cells mixed with Endothelial Cells. Sci Rep 2019; 9:8920. [PMID: 31222080 PMCID: PMC6586904 DOI: 10.1038/s41598-019-45514-3] [Citation(s) in RCA: 92] [Impact Index Per Article: 18.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2019] [Accepted: 06/10/2019] [Indexed: 12/16/2022] Open
Abstract
Despite advances in stem cell research, cell transplantation therapy for liver failure is impeded by a shortage of human primary hepatocytes (HPH), along with current differentiation protocol limitations. Several studies have examined the concept of co-culture of human induced pluripotent cells (hiPSCs) with various types of supporting non-parenchymal cells to attain a higher differentiation yield and to improve hepatocyte-like cell functions both in vitro and in vivo. Co-culturing hiPSCs with human endothelial cells (hECs) is a relatively new technique that requires more detailed studies. Using our 3D human embryoid bodies (hEBs) formation technology, we interlaced Human Adipose Microvascular Endothelial Cells (HAMEC) with hiPSCs, leading to a higher differentiation yield and notable improvements across a wide range of hepatic functions. We conducted a comprehensive gene and protein secretion analysis of our HLCs coagulation factors profile, showing promising results in comparison with HPH. Furthermore, a stage-specific glycomic analysis revealed that the differentiated hepatocyte-like clusters (HLCs) resemble the glycan features of a mature tissue rather than cells in culture. We tested our HLCs in animal models, where the presence of HAMEC in the clusters showed a consistently better performance compared to the hiPSCs only group in regard to persistent albumin secretion post-transplantation.
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Affiliation(s)
- Giuseppe Pettinato
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA.
| | - Sylvain Lehoux
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA.,Glycomics Core, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Rajesh Ramanathan
- Department of Surgery, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - Mohamed M Salem
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA.,Neurosurgical Service, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Li-Xia He
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Oluwatoyosi Muse
- Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Robert Flaumenhaft
- Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Melissa T Thompson
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Emily A Rouse
- Glycomics Core, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Richard D Cummings
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Xuejun Wen
- Department of Chemical and Life Science Engineering, Virginia Commonwealth University, Richmond, VA, USA
| | - Robert A Fisher
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA.
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18
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Behrens AJ, Duke RM, Petralia LM, Harvey DJ, Lehoux S, Magnelli PE, Taron CH, Foster JM. Glycosylation profiling of dog serum reveals differences compared to human serum. Glycobiology 2019; 28:825-831. [PMID: 30137320 PMCID: PMC6192460 DOI: 10.1093/glycob/cwy070] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2018] [Accepted: 07/30/2018] [Indexed: 12/12/2022] Open
Abstract
Glycosylation is the most common post-translational modification of serum proteins, and changes in the type and abundance of glycans in human serum have been correlated with a growing number of human diseases. While the glycosylation pattern of human serum is well studied, little is known about the profiles of other mammalian species. Here, we report detailed glycosylation profiling of canine serum by hydrophilic interaction chromatography-ultraperformance liquid chromatography (HILIC-UPLC) and mass spectrometry. The domestic dog (Canis familiaris) is a widely used model organism and of considerable interest for a large veterinary community. We found significant differences in the serum N-glycosylation profile of dogs compared to that of humans, such as a lower abundance of galactosylated and sialylated glycans. We also compare the N-glycan profile of canine serum to that of canine IgG – the most abundant serum glycoprotein. Our data will serve as a baseline reference for future studies when performing serum analyses of various health and disease states in dogs.
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Affiliation(s)
| | - Rebecca M Duke
- New England Biolabs Inc., 240 County Road, Ipswich, MA, USA
| | | | - David J Harvey
- Target Discovery Institute, Nuffield Department of Medicine, University of Oxford, Old Road Campus.,Centre for Biological Sciences, Faculty of Natural and Environmental Sciences, University of Southampton, University Road, Southampton, UK
| | - Sylvain Lehoux
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, 330 Brookline Avenue, Boston, MA, USA
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Woodward AM, Lehoux S, Mantelli F, Di Zazzo A, Brockhausen I, Bonini S, Argüeso P. Inflammatory Stress Causes N-Glycan Processing Deficiency in Ocular Autoimmune Disease. Am J Pathol 2018; 189:283-294. [PMID: 30448401 DOI: 10.1016/j.ajpath.2018.10.012] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2018] [Revised: 09/10/2018] [Accepted: 10/16/2018] [Indexed: 12/19/2022]
Abstract
High levels of proinflammatory cytokines have been associated with a loss of tissue function in ocular autoimmune diseases, but the basis for this relationship remains poorly understood. Here we investigate a new role for tumor necrosis factor α in promoting N-glycan-processing deficiency at the surface of the eye through inhibition of N-acetylglucosaminyltransferase expression in the Golgi. Using mass spectrometry, complex-type biantennary oligosaccharides were identified as major N-glycan structures in differentiated human corneal epithelial cells. Remarkably, significant differences were detected between the efficacies of cytokines in regulating the expression of glycogenes involved in the biosynthesis of N-glycans. Tumor necrosis factor α but not IL-1β had a profound effect in suppressing the expression of enzymes involved in the Golgi branching pathway, including N-acetylglucosaminyltransferases 1 and 2, which are required for the formation of biantennary structures. This decrease in gene expression was correlated with a reduction in enzymatic activity and impaired N-glycan branching. Moreover, patients with ocular mucous membrane pemphigoid were characterized by marginal N-acetylglucosaminyltransferase expression and decreased N-glycan branching in the conjunctiva. Together, these data indicate that proinflammatory cytokines differentially influence the expression of N-glycan-processing enzymes in the Golgi and set the stage for future studies to explore the pathophysiology of ocular autoimmune diseases.
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Affiliation(s)
- Ashley M Woodward
- Schepens Eye Research Institute of Massachusetts Eye and Ear, Department of Ophthalmology, Harvard Medical School, Boston, Massachusetts
| | - Sylvain Lehoux
- Beth Israel Deaconess Medical Center, Department of Surgery, Harvard Medical School, Boston, Massachusetts
| | | | - Antonio Di Zazzo
- Ophthalmology Complex Unit, Campus Bio-Medico University of Rome, Rome, Italy
| | - Inka Brockhausen
- Department of Biomedical and Molecular Sciences, Queen's University, Kingston, Ontario, Canada
| | - Stefano Bonini
- Ophthalmology Complex Unit, Campus Bio-Medico University of Rome, Rome, Italy
| | - Pablo Argüeso
- Schepens Eye Research Institute of Massachusetts Eye and Ear, Department of Ophthalmology, Harvard Medical School, Boston, Massachusetts.
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20
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Behrens AJ, Duke RM, Petralia LMC, Lehoux S, Carlow CKS, Taron CH, Foster JM. Changes in canine serum N-glycosylation as a result of infection with the heartworm parasite Dirofilaria immitis. Sci Rep 2018; 8:16625. [PMID: 30413744 PMCID: PMC6226445 DOI: 10.1038/s41598-018-35038-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2018] [Accepted: 10/28/2018] [Indexed: 01/07/2023] Open
Abstract
Filariases are diseases caused by infection with filarial nematodes and transmitted by insect vectors. The filarial roundworm Dirofilaria immitis causes heartworm disease in dogs and other carnivores. D. immitis is closely related to Onchocerca volvulus, Wuchereria bancrofti and Brugia malayi, which cause onchocerciasis (river blindness) and lymphatic filariasis (elephantiasis) in humans and are neglected tropical diseases. Serum N-glycosylation is very sensitive to both pathological infections and changes in mammalian biology due to normal aging or lifestyle choices. Here, we report significant changes in the serum N-glycosylation profiles of dogs infected with D. immitis. Our data derive from analysis of serum from dogs with established patent infections and from a longitudinal infection study. Overall, galactosylation and core fucosylation increase, while sialylation decreases in infected dog sera. We also identify individual glycan structures that change significantly in their relative abundance during infection. Notably, the abundance of the most dominant N-glycan in canine serum (biantennary, disialylated A2G2S2) decreases by over 10 percentage points during the first 6 months of infection in each dog analyzed. This is the first longitudinal study linking changes in mammalian serum N-glycome to progression of a parasitic infection.
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Affiliation(s)
| | - Rebecca M Duke
- New England Biolabs Inc., Ipswich, Massachusetts, 01938, USA
| | | | - Sylvain Lehoux
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, 02115, USA
| | | | | | - Jeremy M Foster
- New England Biolabs Inc., Ipswich, Massachusetts, 01938, USA.
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21
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Dierick F, Ebrahimian T, Michaud V, Simeone S, Simon D, Lehoux S. THE CCR7+ PDGFRA+ CELL POPULATION IS INCREASED IN REGRESSING ATHEROSCLEROTIC PLAQUES. Can J Cardiol 2017. [DOI: 10.1016/j.cjca.2017.07.360] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
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22
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Taniguchi T, Woodward AM, Magnelli P, McColgan NM, Lehoux S, Jacobo SMP, Mauris J, Argüeso P. N-Glycosylation affects the stability and barrier function of the MUC16 mucin. J Biol Chem 2017; 292:11079-11090. [PMID: 28487369 DOI: 10.1074/jbc.m116.770123] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2016] [Revised: 05/03/2017] [Indexed: 11/06/2022] Open
Abstract
Transmembrane mucins are highly O-glycosylated glycoproteins that coat the apical glycocalyx on mucosal surfaces and represent the first line of cellular defense against infection and injury. Relatively low levels of N-glycans are found on transmembrane mucins, and their structure and function remain poorly characterized. We previously reported that carbohydrate-dependent interactions of transmembrane mucins with galectin-3 contribute to maintenance of the epithelial barrier at the ocular surface. Now, using MALDI-TOF mass spectrometry, we report that transmembrane mucin N-glycans in differentiated human corneal epithelial cells contain primarily complex-type structures with N-acetyllactosamine, a preferred galectin ligand. In N-glycosylation inhibition experiments, we find that treatment with tunicamycin and siRNA-mediated knockdown of the Golgi N-acetylglucosaminyltransferase I gene (MGAT1) induce partial loss of both total and cell-surface levels of the largest mucin, MUC16, and a concomitant reduction in glycocalyx barrier function. Moreover, we identified a distinct role for N-glycans in promoting MUC16's binding affinity toward galectin-3 and in causing retention of the lectin on the epithelial cell surface. Taken together, these studies define a role for N-linked oligosaccharides in supporting the stability and function of transmembrane mucins on mucosal surfaces.
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Affiliation(s)
- Takazumi Taniguchi
- From the Schepens Eye Research Institute and Massachusetts Eye and Ear, Department of Ophthalmology, Harvard Medical School, Boston, Massachusetts 02114
| | - Ashley M Woodward
- From the Schepens Eye Research Institute and Massachusetts Eye and Ear, Department of Ophthalmology, Harvard Medical School, Boston, Massachusetts 02114
| | | | - Nicole M McColgan
- From the Schepens Eye Research Institute and Massachusetts Eye and Ear, Department of Ophthalmology, Harvard Medical School, Boston, Massachusetts 02114
| | - Sylvain Lehoux
- the Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts 02215
| | - Sarah Melissa P Jacobo
- From the Schepens Eye Research Institute and Massachusetts Eye and Ear, Department of Ophthalmology, Harvard Medical School, Boston, Massachusetts 02114
| | - Jérôme Mauris
- From the Schepens Eye Research Institute and Massachusetts Eye and Ear, Department of Ophthalmology, Harvard Medical School, Boston, Massachusetts 02114
| | - Pablo Argüeso
- From the Schepens Eye Research Institute and Massachusetts Eye and Ear, Department of Ophthalmology, Harvard Medical School, Boston, Massachusetts 02114,
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Abstract
Human immunoglobulin A1 (IgA1), which carries four to six mucin-type O-glycans (O-glycans) on its hinge region (HR), is the most abundant O-glycoprotein in plasma or serum. While normal O-glycans from hematopoietic-originated cells are core 1-based complex structures, many reports showed that the IgA1 from patients with IgA nephropathy (IgAN) carries undergalactosylated or truncated O-glycans such as the Tn antigen and its sialylated version the SialylTn (STn) antigen on the HR. Yet, there is still a debate whether Tn/STn on the HR of IgA1 is specific to the IgA1 from patients with IgAN since these antigens have also been seen in serum IgA1 of healthy individuals. An additional question is whether the O-glycans at all sites on the two HRs of one IgA1 molecule are homogeneous (either all normal or all Tn/STn) or heterogeneous (both normal and Tn/STn O-glycans). To address these questions, we conducted a systematic study on the O-glycans of plasma IgA1 from both IgAN patients and healthy controls using serial HPA and PNA lectin chromatography followed by western blotting and further analysis of O-glycans from HPA-bound and PNA-bound IgA1 fractions by mass spectrometry. Unexpectedly, we found that a variable minor fraction of IgA1 from both IgAN patients and healthy controls had Tn/STn antigens, and that the O-glycoprotein IgA1 molecules from most samples had only two distinct O-glycoforms: one major glycoform with homogeneous normal core 1-based O-glycans and one minor glycoform with homogeneous Tn/STn antigens. These results raised a serious question about the role of Tn/STn antigens on IgA1 in pathogenesis of IgAN, and there is a demand for a practical methodology that any laboratory can utilize to analyze the O-glycans of IgA1. Herein, we describe the methodology we developed in more detail. The method could also be applied to the analysis of any other O-glycosylated proteins.
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Affiliation(s)
- S Lehoux
- Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, United States.
| | - T Ju
- Emory University School of Medicine, Atlanta, GA, United States.
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Ebrahimian T, Simon D, Heidari M, Mann K, Lehoux S. FOUR-AND-A-HALF LIM DOMAIN PROTEIN 2 PLAYS A CRITICAL ROLE IN SPLEEN GERMINAL CENTER DEVELOPMENT AND ANTIBODY RESPONSE. Can J Cardiol 2016. [DOI: 10.1016/j.cjca.2016.07.375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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25
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Silva LN, Lemaire M, Plourde D, Lemarié C, Lehoux S, Mann K. Prenatal exposure to methylated arsenicals enhances atherosclerosis in the ApoE−/− mouse model. Toxicol Lett 2015. [DOI: 10.1016/j.toxlet.2015.08.753] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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26
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Simeone S, Ebrahimian T, Michaud V, Lehoux S. SHEAR STRESS-INDUCED ATHEROSCLEROTIC PLAQUE REGRESSION EXPLAINED BY INCREASED MACROPHAGE EFFEROCYTOSIS & MIGRATION. Can J Cardiol 2015. [DOI: 10.1016/j.cjca.2015.07.250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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27
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Heidari M, Ebrahimian T, Simon D, Vali H, Mandato C, Lehoux S. SEMAPHORIN3A REDUCES ATHEROSCLEROTIC PLAQUE FORMATION IN APOE-/- MICE. Can J Cardiol 2015. [DOI: 10.1016/j.cjca.2015.07.585] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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28
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Le Gallic C, Phalente Y, Manens L, Dublineau I, Gueguen Y, Benderitter M, Lehoux S, Ebrahimian T. Chronic internal exposure to low dose 137CS induces positive impact on the stability of atherosclerotic plaques by reducing inflammation in APOE-/- MICE. Atherosclerosis 2015. [DOI: 10.1016/j.atherosclerosis.2015.04.152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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29
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Ebrahimian T, Simon D, Lemarié C, Simeone S, Heidari M, Mann K, Wassmann S, Lehoux S. ABSENCE OF FOUR-AND-A-HALF LIM DOMAIN PROTEIN 2 DECREASES ATHEROSCLEROSIS IN APOE-/- MICE: ROLE OF MONOCYTIC IMMUNE CELLS. Can J Cardiol 2014. [DOI: 10.1016/j.cjca.2014.07.575] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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30
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Lehoux S, Mi R, Aryal RP, Wang Y, Schjoldager KTBG, Clausen H, van Die I, Han Y, Chapman AB, Cummings RD, Ju T. Identification of distinct glycoforms of IgA1 in plasma from patients with immunoglobulin A (IgA) nephropathy and healthy individuals. Mol Cell Proteomics 2014; 13:3097-113. [PMID: 25071157 DOI: 10.1074/mcp.m114.039693] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Immunoglobulin A nephropathy (IgAN) is the most common form of glomerulonephritis worldwide and is histologically characterized by the deposition of IgA1 and consequent inflammation in the glomerular mesangium. Prior studies suggested that serum IgA1 from IgAN patients contains aberrant, undergalactosylated O-glycans, for example, Tn antigen and its sialylated version, SialylTn (STn), but the mechanisms underlying aberrant O-glycosylation are not well understood. Here we have used serial lectin separation technologies, Western blot, enzymatic modifications, and mass spectrometry to explore whether there are different glycoforms of IgA1 in plasma from patients with IgAN and healthy individuals. Although total plasma IgA in IgAN patients was elevated ∼ 1.6-fold compared with that in healthy donors, IgA1 in all samples was unexpectedly separable into two distinct glycoforms: one with core 1 based O-glycans, and the other exclusively containing Tn/STn structures. Importantly, Tn antigen present on IgA1 from IgAN patients and controls was convertible into the core 1 structure in vitro by recombinant T-synthase. Our results demonstrate that undergalactosylation of O-glycans in IgA1 is not restricted to IgAN and suggest that in vivo inefficiency of T-synthase toward IgA1 in a subpopulation of B or plasma cells, as well as overall elevation of IgA, may contribute to IgAN pathogenesis.
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Affiliation(s)
| | | | | | | | - Katrine T-B G Schjoldager
- §Department of Cellular and Molecular Medicine, Copenhagen Center for Glycomics, Copenhagen, Denmark
| | - Henrik Clausen
- §Department of Cellular and Molecular Medicine, Copenhagen Center for Glycomics, Copenhagen, Denmark
| | - Irma van Die
- ¶Department of Molecular Cell Biology & Immunology, VU University Medical Center, Amsterdam, The Netherlands
| | - Yoosun Han
- ‖Medicine, Emory University School of Medicine, Atlanta, GA 30322
| | - Arlene B Chapman
- ‖Medicine, Emory University School of Medicine, Atlanta, GA 30322
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Simeone S, Ebrahimian T, Michaud V, Lehoux S. Shear Stress-Induced Atherosclerotic Plaque Regression Is Reversed by Regulation of Macrophage Mobility Via Matrix Metalloproteinase Inhibition. Can J Cardiol 2013. [DOI: 10.1016/j.cjca.2013.07.442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
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32
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Ebrahimian T, Heidari M, Lemarie CA, Simon D, Rivas D, Mann K, Lehoux S, Wassmann S. Four-and-a-half LIM domain protein-2 (FHL-2) inhibition reduces atherosclerosis in apolipoprotein E-deficient mice. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht308.970] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Mi R, Song L, Wang Y, Ding X, Zeng J, Lehoux S, Aryal RP, Wang J, Crew VK, van Die I, Chapman AB, Cummings RD, Ju T. Epigenetic silencing of the chaperone Cosmc in human leukocytes expressing Tn antigen. J Biol Chem 2013. [DOI: 10.1074/jbc.a112.371989] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
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34
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Mi R, Song L, Wang Y, Ding X, Zeng J, Lehoux S, Aryal RP, Wang J, Crew VK, van Die I, Chapman AB, Cummings RD, Ju T. Epigenetic silencing of the chaperone Cosmc in human leukocytes expressing tn antigen. J Biol Chem 2012; 287:41523-33. [PMID: 23035125 DOI: 10.1074/jbc.m112.371989] [Citation(s) in RCA: 243] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Cosmc is the specific molecular chaperone in the endoplasmic reticulum for T-synthase, a Golgi β3-galactosyltransferase that generates the core 1 O-glycan, Galβ1-3GalNAcα-Ser/Thr, in glycoproteins. Dysfunctional Cosmc results in the formation of inactive T-synthase and consequent expression of the Tn antigen (GalNAcα1-Ser/Thr), which is associated with several human diseases. However, the molecular regulation of expression of Cosmc, which is encoded by a single gene on Xq24, is poorly understood. Here we show that epigenetic silencing of Cosmc through hypermethylation of its promoter leads to loss of Cosmc transcripts in Tn4 cells, an immortalized B cell line from a male patient with a Tn-syndrome-like phenotype. These cells lack T-synthase activity and express the Tn antigen. Treatment of cells with 5-aza-2'-deoxycytidine causes restoration of Cosmc transcripts, restores T-synthase activity, and reduces Tn antigen expression. Bisulfite sequencing shows that CG dinucleotides in the Cosmc core promoter are hypermethylated. Interestingly, several other X-linked genes associated with glycosylation are not silenced in Tn4 cells, and we observed no correlation of a particular DNA methyltransferase to aberrant methylation of Cosmc in these cells. Thus, hypermethylation of the Cosmc promoter in Tn4 cells is relatively specific. Epigenetic silencing of Cosmc provides another mechanism underlying the abnormal expression of the Tn antigen, which may be important in understanding aberrant Tn antigen expression in human diseases, including IgA nephropathy and cancer.
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Affiliation(s)
- Rongjuan Mi
- Department of Biochemistry, Emory University School of Medicine, Atlanta, Georgia 30322, USA
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35
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Simeone S, Ebrahimian T, Michaud V, Lehoux S. 525 Shear Stress-Induced Atherosclerotic Plaque Regression is Reversed by Matrix Metalloproteinase Inhibition. Can J Cardiol 2012. [DOI: 10.1016/j.cjca.2012.07.479] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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36
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Guber S, Ebrahimian T, Wassmann S, Lehoux S. 034 Endothelial Nitric Oxide Synthase-Overexpressing Human Early Outgrowth Endothelial Progenitor Cells Decrease Human Coronary Artery Smooth Muscle Cell Migration Through Paracrine Functions. Can J Cardiol 2012. [DOI: 10.1016/j.cjca.2012.07.047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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White S, Hayes E, Lehoux S, Jeremy J, Horrevoets A, Newby A. Response of the endothelial cell transcriptome to supraphysiological laminar shear stress. Atherosclerosis 2010. [DOI: 10.1016/j.atherosclerosis.2010.08.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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39
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Lehoux S, Groux-Degroote S, Cazet A, Dhaenens CM, Maurage CA, Caillet-Boudin ML, Delannoy P, Krzewinski-Recchi MA. Transcriptional regulation of the human ST6GAL2 gene in cerebral cortex and neuronal cells. Glycoconj J 2009; 27:99-114. [PMID: 19768537 DOI: 10.1007/s10719-009-9260-y] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2009] [Revised: 08/26/2009] [Accepted: 09/01/2009] [Indexed: 11/27/2022]
Abstract
The second human beta-galactoside alpha-2,6-sialyltransferase (hST6Gal II) differs from hST6Gal I, the first member of ST6Gal family, in substrate specificity and tissue expression pattern. While ST6GAL1 gene is expressed in almost all human tissues, ST6GAL2 shows a restricted tissue-specific pattern of expression, mostly expressed in embryonic and adult brain. In order to understand the mechanisms involved in the transcriptional regulation of ST6GAL2, we first characterized the transcription start sites (TSS) in SH-SY5Y neuroblastoma cells. 5' RACE experiments revealed multiple TSS located on three first alternative 5' exons, termed EX, EY and EZ, which are unusually close on the genomic sequence and are all located more than 42 kbp upstream of the first common coding exon. Using Taqman duplex Q-PCR, we showed that the ST6GAL2 transcripts initiated by EX or EY are mainly expressed in both brain-related cell lines and human cerebral cortex, testifying for the use of a similar transcriptional regulation in vivo. Furthermore, we also showed for the first time hST6Gal II protein expression in the different lobes of the human cortex. Luciferase reporter assays allowed us to define two sequences upstream EX and EY with a high and moderate promoter activity, respectively. Bioinformatics analysis and site-directed mutagenesis showed that NF-kappaB and NRSF are likely to act as transcriptional repressors, whereas neuronal-related development factors Sox5, Puralpha and Olf1, are likely to act as transcriptional activators of ST6GAL2. This suggests that ST6GAL2 transcription could be potentially activated for specific neuronal functions.
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Affiliation(s)
- Sylvain Lehoux
- Structural and Functional Glycobiology Unit, UMR CNRS 8576, University of Sciences and Technologies of Lille, 59655, Villeneuve d'Ascq, France
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40
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Cazet A, Groux-Degroote S, Teylaert B, Kwon KM, Lehoux S, Slomianny C, Kim CH, Le Bourhis X, Delannoy P. GD3 synthase overexpression enhances proliferation and migration of MDA-MB-231 breast cancer cells. Biol Chem 2009; 390:601-9. [PMID: 19335207 DOI: 10.1515/bc.2009.054] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The disialoganglioside G(D3) is an oncofetal marker of a variety of human tumors including melanoma and neuroblastoma, playing a key role in tumor progression. G(D3) and 9-O-acetyl-G(D3) are overexpressed in approximately 50% of invasive ductal breast carcinoma, but no relationship has been established between disialoganglioside expression and breast cancer progression. In order to determine the effect of G(D3) expression on breast cancer development, we analyzed the biosynthesis of gangliosides in several breast epithelial cell lines including MDA-MB-231, MCF-7, BT-20, T47-D, and MCF10A, by immunocytochemistry, flow cytometry, and real-time PCR. Our results show that, in comparison to tumors, cultured breast cancer cells express a limited pattern of gangliosides. Disialogangliosides were not detected in any cell line and G(M3) was only observed at the cell surface of MDA-MB-231 cells. To evaluate the influence of G(D3) in breast cancer cell behavior, we established and characterized MDA-MB-231 cells overexpressing G(D3) synthase. We show that G(D3) synthase expressing cells accumulate G(D3), G(D2), and G(T3) at the cell surface. Moreover, G(D3) synthase overexpression bypasses the need of serum for cell growth and increases cell migration. This suggests that G(D3) synthase overexpression may contribute to increasing the malignant properties of breast cancer cells.
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Affiliation(s)
- Aurélie Cazet
- Structural and Functional Glycobiology Unit, UMR CNRS 8576, University of Sciences and Technologies of Lille, F-59655 Villeneuve d'Ascq, France
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41
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Ramkhelawon B, Lehoux S, Devue C, Rautou PE, Tedgui A, Boulanger C. E003 Shear stress modulates endothelial microparticles shedding. Arch Cardiovasc Dis 2009. [DOI: 10.1016/s1875-2136(09)72242-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Lompré AM, Lehoux S, Esposito B, Le Prince P, Bonnet N, Le Feuvre C, Hajjar R, Lipskaia L. SERCA2a gene transfer reduces vascular smooth muscle cell proliferation in human arteries: A new target for restenosis? J Mol Cell Cardiol 2007. [DOI: 10.1016/j.yjmcc.2007.03.663] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Castier Y, Lehoux S, Hu Y, Foteinos G, Fonteinos G, Tedgui A, Xu Q. Characterization of neointima lesions associated with arteriovenous fistulas in a mouse model. Kidney Int 2006; 70:315-20. [PMID: 16760906 DOI: 10.1038/sj.ki.5001569] [Citation(s) in RCA: 65] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Arteriovenous fistulas (AVFs) are usually used for vascular access in the provision of hemodialysis, but AVFs have a 1-year patency rate of only about 60% owing to stenosis. As the molecular mechanisms behind AVF neointimal hyperplasia remain largely unknown, representative models in transgenic mice could be useful to study this process at the genetic level. Hence, we characterized neointimal lesion formation in a model of AVF recently developed in the mouse, where the common carotid artery was end-to-side sutured to jugular vein in C57BL/6J mice. At the site of anastomosis, arterial wall thickening was observed as early as 1 week after surgery (fourfold) and progressed to six- and 10-fold original thickness in carotid arteries after 2 and 3 weeks, respectively. The lumen of the carotid artery was significantly narrowed owing to neointima hyperplasia, and thrombosis was observed in the vein wall opposite to the anastomosed artery. Histological and immunohistochemical analyses revealed that 3-week neointimal lesions consisted of abundant smooth muscle cells (alpha-actin(+)) and a small number of membrane attack complex-1+ macrophages. Furthermore, using chimeric mice receiving bone marrow from transgenic mice expressing the LacZ gene in smooth muscle (SM-LacZ), it was found that bone marrow stem cells did not contribute to smooth muscle cell accumulation in neointimal lesions of AVF arteries. Thus, this model, which reproduces many of the features of human AVF, should prove useful for our understanding of the mechanism of neointimal formation and to evaluate the effects of drugs and gene therapy on this disease.
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Affiliation(s)
- Y Castier
- INSERM Centre de Recherche Cardiovasculaire Lariboisiere, Paris, France
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Abstract
Blood vessels are permanently subjected to mechanical forces in the form of stretch, encompassing cyclic mechanical strain due to the pulsatile nature of blood flow and shear stress. Significant variations in mechanical forces, of physiological or physiopathological nature, occur in vivo. These are accompanied by phenotypical modulation of smooth muscle cells and endothelial cells, producing structural modifications of the arterial wall. In all the cases, vascular remodelling can be allotted to a modification of the tensional strain or shear, and underlie a trend to reestablish baseline mechanical conditions. Vascular cells are equipped with numerous receptors that allow them to detect and respond to the mechanical forces generated by pressure and shear stress. The cytoskeleton and other structural components have an established role in mechanotransduction, being able to transmit and modulate tension within the cell via focal adhesion sites, integrins, cellular junctions and the extracellular matrix. Mechanical forces also initiate complex signal transduction cascades, including nuclear factor-kappaB and mitogen-activated protein kinase pathways, leading to functional changes within the cell.
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Affiliation(s)
- S Lehoux
- From the INSERM U589, Hôpital Lariboisière, Paris, France
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Lehoux S. Unraveling hypertensive transduction cascades in the vasculature. J Biomech 2006. [DOI: 10.1016/s0021-9290(06)84335-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Berk B, Yamawaki H, Lehoux S, Yoshizumi M, Min W, Abe J, Yan C. 4SY09-2 Atheroprotective mechanisms activated by flow. ATHEROSCLEROSIS SUPP 2003. [DOI: 10.1016/s1567-5688(03)91145-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Lehoux S, Florian JA, Berk BC. 14-3-3 Binding to Na+/H+ exchanger isoform-1 is associated with serum-dependent activation of Na+/H+ exchange. J Biol Chem 2001; 276:15794-800. [PMID: 11279064 DOI: 10.1074/jbc.m100410200] [Citation(s) in RCA: 95] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Na(+)/H(+) exchanger isoform-1 (NHE1), the ubiquitous form of the Na(+)/H(+) exchanger, has increased activity in hypertensive patients and in animal models of hypertension. Furthermore, NHE1 is activated in cells stimulated with growth factors. We showed previously that activation of the exchanger is dependent on phosphorylation of serine 703 (Ser(P)(703)) by p90 ribosomal S6 kinase (RSK). Because the NHE1 sequence at Ser(P)(703) (RIGSDP) is similar to a consensus sequence (RSXSXP) specific for 14-3-3 ligands, we evaluated whether serum stimulated 14-3-3 binding to NHE1. Five different GST-NHE1 fusion proteins spanning amino acids 515-815 were phosphorylated by RSK and used as ligands in a far Western analysis; only those containing Ser(P)(703) exhibited high affinity 14-3-3 binding. In PS127A cells (NHE1-overexpressing Chinese hamster fibroblasts) stimulated with 20% serum, NHE1 co-precipitation with GST-14-3-3 fusion protein increased at 5 min (5.2 +/- 0.4-fold versus control; p < 0.01) and persisted at 40 min (3.9 +/- 0.3-fold; p < 0.01). We confirmed that binding occurs at the RIGSDP motif using PS120 (NHE1 null) cells transfected with S703A-NHE1 or P705A-NHE1 (based on data indicating that 14-3-3 binding requires phosphoserine and +2 proline). Serum failed to stimulate association of 14-3-3 with these mutants. A GST-NHE1 fusion protein was phosphorylated by RSK and used as a ligand to assess the effect of 14-3-3 on protein phosphatase 1-mediated dephosphorylation of Ser(P)(703). GST-14-3-3 limited dephosphorylation (66% of initial state at 60 min) compared with GST alone (27% of initial state; p < 0.01). The protective effect of GST-14-3-3 was lost in the GST-NHE1 P705A mutant. Finally, the base-line rate of pH recovery in acid-loaded cells was equal in unstimulated cells expressing wild-type or P705A-NHE1. However, activation of NHE1 by serum was dramatically inhibited in cells expressing P705A-NHE1 compared with wild-type (0.13 +/- 0.02 versus 0.48 +/- 0.06 mmol of H(+)/min/liter, p < 0.01). These data suggest that 14-3-3 binding to NHE1 participates in serum-stimulated exchanger activation, a new function for 14-3-3.
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Affiliation(s)
- S Lehoux
- Center for Cardiovascular Research and Department of Medicine, University of Rochester School of Medicine and Dentistry, Rochester, New York 14642, USA
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Tronc F, Mallat Z, Lehoux S, Wassef M, Esposito B, Tedgui A. Role of matrix metalloproteinases in blood flow-induced arterial enlargement: interaction with NO. Arterioscler Thromb Vasc Biol 2000; 20:E120-6. [PMID: 11116076 DOI: 10.1161/01.atv.20.12.e120] [Citation(s) in RCA: 209] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Tears in the internal elastic lamina (IEL) can be observed after chronic increases in arterial blood flow, suggesting a potential role for matrix metalloproteinases (MMPs) in flow-induced vascular remodeling. We undertook to study this phenomenon by constructing an arteriovenous fistula (AVF) between the left common carotid artery (CCA) and the external jugular vein in rabbits. The diameter of the flow-loaded left CCA increased by 13.6+/-1.8% by day 3 after construction of the AVF compared with the right CCA (n=4, P:<0.01) and by 40.7+/-7.5% by day-15 (n=10, P:<0.0001). Increased CCA diameter also coincided with IEL fragmentation. Three days after construction of the AVF, gelatin zymography of protein extracts from left CCAs of untreated rabbits showed a significant increase in the 62-kDa (active MMP-2) activity and the appearance of a lytic band at 92 kDa (pro-MMP-9). In further experiments, MMP activity was inhibited by treatment with doxycycline (DOX) or BB-94, a specific MMP inhibitor. The increase in the 62-kDa gelatinolytic band was abolished in DOX- and BB-94-treated rabbits. The 92-kDa gelatinolytic band was also reduced in DOX-treated animals. Furthermore, both increased left CCA diameter and IEL fragmentation were abolished in DOX- and BB-94-treated rabbits. To evaluate whether nitric oxide was involved in blood flow-induced MMP activation, the rabbits were treated with N:(G)-nitro-L-arginine methyl ester to inhibit nitric oxide synthesis. MMP activities were significantly decreased in the left CCAs of N:(G)-nitro-L-arginine methyl ester-treated animals. Hence, blood flow-induced MMP activation is critical in flow-induced vascular enlargement and IEL fragmentation, and blood flow-induced nitric oxide participates in MMP activation.
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Affiliation(s)
- F Tronc
- Institut National de la Santé et de la Recherche Médicale (INSERM) U541, Paris, France
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Lehoux S, Esposito B, Merval R, Loufrani L, Tedgui A. Pulsatile stretch-induced extracellular signal-regulated kinase 1/2 activation in organ culture of rabbit aorta involves reactive oxygen species. Arterioscler Thromb Vasc Biol 2000; 20:2366-72. [PMID: 11073839 DOI: 10.1161/01.atv.20.11.2366] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Increased steady intraluminal pressure in blood vessels activates the extracellular signal-regulated kinase (ERK)1/2 pathway. However, signal transduction of pulsatile stretch has not been elucidated. Using an organ culture model of rabbit aorta, we studied ERK1/2 activation by pulsatility in vessels maintained at 80 mm Hg for 24 hours. ERK1/2 activity was evaluated by in-gel kinase assays and by Western blot. Compared with control aortas without pulsatility, aortas submitted to a pulsatile 10% variation in vessel diameter displayed a significant increase in ERK1/2 activity (207+/-12%, P<0.001), which remained high after removal of the endothelium. Unlike steady overstretch, pulsatile stretch-induced activation of ERK1/2 was not modified by herbimycin A, a Src family tyrosine kinase inhibitor, but was reduced by other tyrosine kinase inhibitors, tyrphostin A48 and genistein (162+/-27% and 144+/-14%, respectively). Conversely, ERK1/2 activity was markedly decreased in pulsatile vessels treated with staurosporine (114+/-18%) although neither of the more specific protein kinase C inhibitors, Ro-31-8220 or Gö-6976, blocked ERK1/2 activation (209+/-24% and 238+/-34%, respectively), whereas staurosporine had no effect on steady overstretch-induced ERK1/2 activation. Pulsatility induced superoxide anion generation, which was prevented by the NADPH oxidase inhibitor diphenyleneiodonium. Furthermore, polyethylene glycol-superoxide dismutase completely abolished ERK1/2 activation by pulsatility (114+/-12%). Finally, ERK1/2 and O(2)(-) levels in freshly isolated vessels were equivalent to the levels found in pulsatile vessels. In conclusion, pulsatile stretch activates ERK1/2 in the arterial wall via pathways different from those induced by steady overstretch. Pulsatility might be considered a physiological stimulus that maintains a certain degree of ERK1/2 activation via oxygen-derived free radical production.
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Affiliation(s)
- S Lehoux
- INSERM U541 and IFR "Circulation," Hôpital Lariboisière, Paris, France
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Bernard C, Merval R, Lebret M, Delerive P, Dusanter-Fourt I, Lehoux S, Créminon C, Staels B, Maclouf J, Tedgui A. Oncostatin M induces interleukin-6 and cyclooxygenase-2 expression in human vascular smooth muscle cells : synergy with interleukin-1beta. Circ Res 1999; 85:1124-31. [PMID: 10590238 DOI: 10.1161/01.res.85.12.1124] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Oncostatin M (OSM), a cytokine first identified from activated monocytes and T lymphocytes, is one of the most potent autocrine growth factor for AIDS and Kaposi's sarcoma. Little is known about the effects of OSM on normal vascular cells. We thus exposed human aortic smooth muscle cells (hASMCs) to OSM, examined cell proliferation and morphology, and determined interleukin-6 (IL-6) and cyclooxygenase-2 (COX-2) expression. OSM had a weak antiproliferative effect. After a 4-day incubation with 100 ng/mL OSM, cell count decreased to 69+/-3% of control. However, OSM induced striking changes in hASMC morphology, characterized by a polyclonal shape, in contrast to the spindle morphological feature of control hASMCs. OSM stimulated the release of IL-6 by hASMCs in a dose-dependent way; after a 48-hour exposure, values were 8.5+/-0.7, 29.7+/-3.5, 50.9+/-4.4, and 73.8+/-7.6x10(3) U/mL (n=6) at OSM concentrations of 0, 1, 10, and 100 ng/mL, respectively. OSM induced marked expression of COX-2 protein and mRNA. Leukemia inhibitory factor had no effect on hASMCs, indicating that OSM effects on hASMCs were mediated by the OSM type II receptor and not by the leukemia inhibitory factor receptor. OSM used the JAK/STAT signaling pathway, as demonstrated by rapid phosphorylation of JAK1 and specific activation of STAT1. Interestingly, OSM acted in synergy with IL-1beta on IL-6 production and COX-2 expression. In conclusion, OSM is a novel regulator of human smooth muscle cell functions, acting in concert with IL-1beta, and OSM may play a role in major vascular diseases such as atherosclerosis.
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Affiliation(s)
- C Bernard
- Institut National de la Santé et de la Recherche Médicale U141, Paris, France
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