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Nilsson J, Rimkute I, Sihlbom C, Tenge VR, Lin SC, Atmar RL, Estes MK, Larson G. N-glycoproteomic analyses of human intestinal enteroids, varying in histo-blood group geno- and phenotypes, reveal a wide repertoire of fucosylated glycoproteins. Glycobiology 2024:cwae029. [PMID: 38590172 DOI: 10.1093/glycob/cwae029] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2023] [Revised: 03/12/2024] [Indexed: 04/10/2024] Open
Abstract
Human noroviruses, globally the main cause of viral gastroenteritis, show strain specific affinity for histo-blood group antigens (HBGA) and can successfully be propagated ex vivo in human intestinal enteroids (HIEs). HIEs established from jejunal stem cells of individuals with different ABO, Lewis and secretor geno- and phenotypes, show varying susceptibility to such infections. Using bottom-up glycoproteomic approaches we have defined and compared the N-linked glycans of glycoproteins of seven jejunal HIEs. Membrane proteins were extracted, trypsin digested, and glycopeptides enriched by hydrophilic interaction liquid chromatography and analyzed by nanoLC-MS/MS. The Byonic software was used for glycopeptide identification followed by hands-on verifications and interpretations. Glycan structures and attachment sites were identified from MS 2 spectra obtained by higher-energy collision dissociation through analysis of diagnostic saccharide oxonium ions (B-ions), stepwise glycosidic fragmentation of the glycans (Y-ions), and peptide sequence ions (b- and y-ions). Altogether 694 unique glycopeptides from 93 glycoproteins were identified. The N-glycans encompassed pauci- and oligomannose, hybrid- and complex-type structures. Notably, polyfucosylated HBGA-containing glycopeptides of the four glycoproteins tetraspanin-8, carcinoembryonic antigen-related cell adhesion molecule 5, sucrose-isomaltase and aminopeptidase N were especially prominent and were characterized in detail and related to donor ABO, Lewis and secretor types of each HIE. Virtually no sialylated N-glycans were identified for these glycoproteins suggesting that terminal sialylation was infrequent compared to fucosylation and HBGA biosynthesis. This approach gives unique site-specific information on the structural complexity of N-linked glycans of glycoproteins of human HIEs and provides a platform for future studies on the role of host glycoproteins in gastrointestinal infectious diseases.
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Affiliation(s)
- Jonas Nilsson
- Department of Laboratory Medicine, Institute of Biomedicine, University of Gothenburg, Gothenburg, Sweden
- Department of Clinical Chemistry, Region Västra Götaland, Sahlgrenska University Hospital, Gothenburg, Sweden
- Proteomics Core Facilities, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Inga Rimkute
- Department of Laboratory Medicine, Institute of Biomedicine, University of Gothenburg, Gothenburg, Sweden
- Department of Microbiology and Immunology, Institute of Biomedicine, University of Gothenburg, Gothenburg, Sweden
| | - Carina Sihlbom
- Proteomics Core Facilities, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Victoria R Tenge
- Department of Molecular Virology, Baylor College School of Medicine, Houston, TX, United States
| | - Shih-Ching Lin
- Department of Molecular Virology, Baylor College School of Medicine, Houston, TX, United States
| | - Robert L Atmar
- Department of Molecular Virology, Baylor College School of Medicine, Houston, TX, United States
- Department of Medicine, Baylor College of Medicine, Houston, TX, United States
| | - Mary K Estes
- Department of Molecular Virology, Baylor College School of Medicine, Houston, TX, United States
- Department of Medicine, Baylor College of Medicine, Houston, TX, United States
| | - Göran Larson
- Department of Laboratory Medicine, Institute of Biomedicine, University of Gothenburg, Gothenburg, Sweden
- Department of Clinical Chemistry, Region Västra Götaland, Sahlgrenska University Hospital, Gothenburg, Sweden
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2
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Nilsson J, Eriksson P, Naguib MM, Jax E, Sihlbom C, Olsson BM, Lundkvist Å, Olsen B, Järhult JD, Larson G, Ellström P. Expression of influenza A virus glycan receptor candidates in mallard, chicken, and tufted duck. Glycobiology 2024; 34:cwad098. [PMID: 38127648 PMCID: PMC10987293 DOI: 10.1093/glycob/cwad098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Revised: 11/09/2023] [Accepted: 11/28/2023] [Indexed: 12/23/2023] Open
Abstract
Influenza A virus (IAV) pandemics result from interspecies transmission events within the avian reservoir and further into mammals including humans. Receptor incompatibility due to differently expressed glycan structures between species has been suggested to limit zoonotic IAV transmission from the wild bird reservoir as well as between different bird species. Using glycoproteomics, we have studied the repertoires of expressed glycan structures with focus on putative sialic acid-containing glycan receptors for IAV in mallard, chicken and tufted duck; three bird species with different roles in the zoonotic ecology of IAV. The methodology used pinpoints specific glycan structures to specific glycosylation sites of identified glycoproteins and was also used to successfully discriminate α2-3- from α2-6-linked terminal sialic acids by careful analysis of oxonium ions released from glycopeptides in tandem MS/MS (MS2), and MS/MS/MS (MS3). Our analysis clearly demonstrated that all three bird species can produce complex N-glycans including α2-3-linked sialyl Lewis structures, as well as both N- and O- glycans terminated with both α2-3- and α2-6-linked Neu5Ac. We also found the recently identified putative IAV receptor structures, Man-6P N-glycopeptides, in all tissues of the three bird species. Furthermore, we found many similarities in the repertoires of expressed receptors both between the bird species investigated and to previously published data from pigs and humans. Our findings of sialylated glycan structures, previously anticipated to be mammalian specific, in all three bird species may have major implications for our understanding of the role of receptor incompatibility in interspecies transmission of IAV.
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Affiliation(s)
- Jonas Nilsson
- Department of Laboratory Medicine, University of Gothenburg, Sahlgrenska University Hospital, Vita Stråket 12, Gothenburg SE-413 45, Sweden
- Laboratory of Clinical Chemistry, Sahlgrenska University Hospital, Bruna Stråket 16, Gothenburg SE-413 45, Sweden
- Proteomics Core Facility, University of Gothenburg, Sahlgrenska Academy, Medicinaregatan 9E, Gothenburg SE-405 30, Sweden
| | - Per Eriksson
- Zoonosis Science Center, Department of Medical Sciences, Husargatan 3, Uppsala University, Uppsala, SE-75185, Sweden
| | - Mahmoud M Naguib
- Zoonosis Science Center, Department of Medical Biochemistry and Microbiology, Husargatan 3, Uppsala University, Uppsala, SE-75237, Sweden
| | - Elinor Jax
- Department of Migration, Max Planck Institute of Animal Behavior, Am Obstberg 1, Radolfzell, Baden-Württemberg DE-78315, Germany
| | - Carina Sihlbom
- Proteomics Core Facility, University of Gothenburg, Sahlgrenska Academy, Medicinaregatan 9E, Gothenburg SE-405 30, Sweden
| | - Britt-Marie Olsson
- Proteomics Core Facility, University of Gothenburg, Sahlgrenska Academy, Medicinaregatan 9E, Gothenburg SE-405 30, Sweden
| | - Åke Lundkvist
- Zoonosis Science Center, Department of Medical Biochemistry and Microbiology, Husargatan 3, Uppsala University, Uppsala, SE-75237, Sweden
| | - Björn Olsen
- Zoonosis Science Center, Department of Medical Sciences, Husargatan 3, Uppsala University, Uppsala, SE-75185, Sweden
| | - Josef D Järhult
- Zoonosis Science Center, Department of Medical Sciences, Husargatan 3, Uppsala University, Uppsala, SE-75185, Sweden
| | - Göran Larson
- Department of Laboratory Medicine, University of Gothenburg, Sahlgrenska University Hospital, Vita Stråket 12, Gothenburg SE-413 45, Sweden
- Laboratory of Clinical Chemistry, Sahlgrenska University Hospital, Bruna Stråket 16, Gothenburg SE-413 45, Sweden
| | - Patrik Ellström
- Zoonosis Science Center, Department of Medical Sciences, Husargatan 3, Uppsala University, Uppsala, SE-75185, Sweden
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Vaid R, Thombare K, Mendez A, Burgos-Panadero R, Djos A, Jachimowicz D, Lundberg K, Bartenhagen C, Kumar N, Tümmler C, Sihlbom C, Fransson S, Johnsen J, Kogner P, Martinsson T, Fischer M, Mondal T. METTL3 drives telomere targeting of TERRA lncRNA through m6A-dependent R-loop formation: a therapeutic target for ALT-positive neuroblastoma. Nucleic Acids Res 2024; 52:2648-2671. [PMID: 38180812 PMCID: PMC10954483 DOI: 10.1093/nar/gkad1242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Revised: 12/08/2023] [Accepted: 12/18/2023] [Indexed: 01/07/2024] Open
Abstract
Telomerase-negative tumors maintain telomere length by alternative lengthening of telomeres (ALT), but the underlying mechanism behind ALT remains poorly understood. A proportion of aggressive neuroblastoma (NB), particularly relapsed tumors, are positive for ALT (ALT+), suggesting that a better dissection of the ALT mechanism could lead to novel therapeutic opportunities. TERRA, a long non-coding RNA (lncRNA) derived from telomere ends, localizes to telomeres in a R-loop-dependent manner and plays a crucial role in telomere maintenance. Here we present evidence that RNA modification at the N6 position of internal adenosine (m6A) in TERRA by the methyltransferase METTL3 is essential for telomere maintenance in ALT+ cells, and the loss of TERRA m6A/METTL3 results in telomere damage. We observed that m6A modification is abundant in R-loop enriched TERRA, and the m6A-mediated recruitment of hnRNPA2B1 to TERRA is critical for R-loop formation. Our findings suggest that m6A drives telomere targeting of TERRA via R-loops, and this m6A-mediated R-loop formation could be a widespread mechanism employed by other chromatin-interacting lncRNAs. Furthermore, treatment of ALT+ NB cells with a METTL3 inhibitor resulted in compromised telomere targeting of TERRA and accumulation of DNA damage at telomeres, indicating that METTL3 inhibition may represent a therapeutic approach for ALT+ NB.
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Affiliation(s)
- Roshan Vaid
- Department of Laboratory Medicine, Institute of Biomedicine, University of Gothenburg, Gothenburg, Sweden
| | - Ketan Thombare
- Department of Laboratory Medicine, Institute of Biomedicine, University of Gothenburg, Gothenburg, Sweden
| | - Akram Mendez
- Department of Laboratory Medicine, Institute of Biomedicine, University of Gothenburg, Gothenburg, Sweden
| | - Rebeca Burgos-Panadero
- Department of Laboratory Medicine, Institute of Biomedicine, University of Gothenburg, Gothenburg, Sweden
| | - Anna Djos
- Department of Laboratory Medicine, Institute of Biomedicine, University of Gothenburg, Gothenburg, Sweden
| | - Daniel Jachimowicz
- Translational Genomics, Discovery Biology, Discovery Sciences, BioPharmaceuticals R&D, AstraZeneca, Gothenburg, Sweden
| | - Kristina Ihrmark Lundberg
- Childhood Cancer Research Unit, Department of Women's and Children's Health, Karolinska Institute, and Pediatric Oncology, Astrid Lindgren Children's Hospital, Karolinska University Hospital, Stockholm, Sweden
| | - Christoph Bartenhagen
- Department of Experimental Pediatric Oncology, University Children's Hospital of Cologne, Medical Faculty, Cologne, Germany, Center for Molecular Medicine Cologne (CMMC), University of Cologne, Cologne, Germany; Department of Pediatric Oncology and Hematology, University of Cologne, Cologne, Germany
| | - Navinder Kumar
- Department of Microbiology and Immunology, Institute of Biomedicine, University of Gothenburg, Gothenburg, Sweden
| | - Conny Tümmler
- Childhood Cancer Research Unit, Department of Women's and Children's Health, Karolinska Institute, and Pediatric Oncology, Astrid Lindgren Children's Hospital, Karolinska University Hospital, Stockholm, Sweden
| | - Carina Sihlbom
- Proteomics Core Facility, Sahlgrenska Academy at the University of Gothenburg, Gothenburg, Sweden
| | - Susanne Fransson
- Department of Laboratory Medicine, Institute of Biomedicine, University of Gothenburg, Gothenburg, Sweden
| | - John Inge Johnsen
- Childhood Cancer Research Unit, Department of Women's and Children's Health, Karolinska Institute, and Pediatric Oncology, Astrid Lindgren Children's Hospital, Karolinska University Hospital, Stockholm, Sweden
| | - Per Kogner
- Childhood Cancer Research Unit, Department of Women's and Children's Health, Karolinska Institute, and Pediatric Oncology, Astrid Lindgren Children's Hospital, Karolinska University Hospital, Stockholm, Sweden
| | - Tommy Martinsson
- Department of Laboratory Medicine, Institute of Biomedicine, University of Gothenburg, Gothenburg, Sweden
| | - Matthias Fischer
- Department of Experimental Pediatric Oncology, University Children's Hospital of Cologne, Medical Faculty, Cologne, Germany, Center for Molecular Medicine Cologne (CMMC), University of Cologne, Cologne, Germany; Department of Pediatric Oncology and Hematology, University of Cologne, Cologne, Germany
| | - Tanmoy Mondal
- Department of Laboratory Medicine, Institute of Biomedicine, University of Gothenburg, Gothenburg, Sweden
- Department of Clinical Chemistry, Sahlgrenska University Hospital, University of Gothenburg, Gothenburg, 41345 Sweden
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Taskinen MR, Matikainen N, Björnson E, Söderlund S, Inkeri J, Hakkarainen A, Parviainen H, Sihlbom C, Thorsell A, Andersson L, Adiels M, Packard CJ, Borén J. Contribution of intestinal triglyceride-rich lipoproteins to residual atherosclerotic cardiovascular disease risk in individuals with type 2 diabetes on statin therapy. Diabetologia 2023; 66:2307-2319. [PMID: 37775612 PMCID: PMC10627993 DOI: 10.1007/s00125-023-06008-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Accepted: 06/30/2023] [Indexed: 10/01/2023]
Abstract
AIMS/HYPOTHESIS This study explored the hypothesis that significant abnormalities in the metabolism of intestinally derived lipoproteins are present in individuals with type 2 diabetes on statin therapy. These abnormalities may contribute to residual CVD risk. METHODS To investigate the kinetics of ApoB-48- and ApoB-100-containing lipoproteins, we performed a secondary analysis of 11 overweight/obese individuals with type 2 diabetes who were treated with lifestyle counselling and on a stable dose of metformin who were from an earlier clinical study, and compared these with 11 control participants frequency-matched for age, BMI and sex. Participants in both groups were on a similar statin regimen during the study. Stable isotope tracers were used to determine the kinetics of the following in response to a standard fat-rich meal: (1) apolipoprotein (Apo)B-48 in chylomicrons and VLDL; (2) ApoB-100 in VLDL, intermediate-density lipoprotein (IDL) and LDL; and (3) triglyceride (TG) in VLDL. RESULTS The fasting lipid profile did not differ significantly between the two groups. Compared with control participants, in individuals with type 2 diabetes, chylomicron TG and ApoB-48 levels exhibited an approximately twofold higher response to the fat-rich meal, and a twofold higher increment was observed in ApoB-48 particles in the VLDL1 and VLDL2 density ranges (all p < 0.05). Again comparing control participants with individuals with type 2 diabetes, in the latter, total ApoB-48 production was 25% higher (556 ± 57 vs 446 ± 57 mg/day; p < 0.001), conversion (fractional transfer rate) of chylomicrons to VLDL was around 40% lower (35 ± 25 vs 82 ± 58 pools/day; p=0.034) and direct clearance of chylomicrons was 5.6-fold higher (5.6 ± 2.2 vs 1.0 ± 1.8 pools/day; p < 0.001). During the postprandial period, ApoB-48 particles accounted for a higher proportion of total VLDL in individuals with type 2 diabetes (44%) compared with control participants (25%), and these ApoB-48 VLDL particles exhibited a fivefold longer residence time in the circulation (p < 0.01). No between-group differences were seen in the kinetics of ApoB-100 and TG in VLDL, or in LDL ApoB-100 production, pool size and clearance rate. As compared with control participants, the IDL ApoB-100 pool in individuals with type 2 diabetes was higher due to increased conversion from VLDL2. CONCLUSIONS/INTERPRETATION Abnormalities in the metabolism of intestinally derived ApoB-48-containing lipoproteins in individuals with type 2 diabetes on statins may help to explain the residual risk of CVD and may be suitable targets for interventions. TRIAL REGISTRATION ClinicalTrials.gov NCT02948777.
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Affiliation(s)
- Marja-Riitta Taskinen
- Research Programs Unit, Clinical and Molecular Medicine, University of Helsinki, Helsinki, Finland
| | - Niina Matikainen
- Research Programs Unit, Clinical and Molecular Medicine, University of Helsinki, Helsinki, Finland
- Endocrinology, Abdominal Center, Helsinki University Hospital, Helsinki, Finland
| | - Elias Björnson
- Department of Molecular and Clinical Medicine, Institute of Medicine, University of Gothenburg, Gothenburg, Sweden
| | - Sanni Söderlund
- Research Programs Unit, Clinical and Molecular Medicine, University of Helsinki, Helsinki, Finland
- Endocrinology, Abdominal Center, Helsinki University Hospital, Helsinki, Finland
| | - Jussi Inkeri
- HUS Medical Imaging Center, Radiology, Helsinki University Hospital, University of Helsinki, Helsinki, Finland
| | - Antti Hakkarainen
- HUS Medical Imaging Center, Radiology, Helsinki University Hospital, University of Helsinki, Helsinki, Finland
| | - Helka Parviainen
- HUS Medical Imaging Center, Radiology, Helsinki University Hospital, University of Helsinki, Helsinki, Finland
| | - Carina Sihlbom
- Proteomic Core Facility at Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Annika Thorsell
- Proteomic Core Facility at Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Linda Andersson
- Department of Molecular and Clinical Medicine, Institute of Medicine, University of Gothenburg, Gothenburg, Sweden
| | - Martin Adiels
- Department of Molecular and Clinical Medicine, Institute of Medicine, University of Gothenburg, Gothenburg, Sweden
| | - Chris J Packard
- Institute of Cardiovascular and Medical Sciences, University of Glasgow, Glasgow, UK
| | - Jan Borén
- Department of Molecular and Clinical Medicine, Institute of Medicine, University of Gothenburg, Gothenburg, Sweden.
- Wallenberg Laboratory, University of Gothenburg, Sahlgrenska University Hospital, Gothenburg, Sweden.
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Bachar-Wikstrom E, Thomsson KA, Sihlbom C, Abbo L, Tartor H, Lindén SK, Wikstrom JD. Identification of Novel Glycans in the Mucus Layer of Shark and Skate Skin. Int J Mol Sci 2023; 24:14331. [PMID: 37762632 PMCID: PMC10532229 DOI: 10.3390/ijms241814331] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Revised: 09/13/2023] [Accepted: 09/16/2023] [Indexed: 09/29/2023] Open
Abstract
The mucus layer covering the skin of fish has several roles, including protection against pathogens and mechanical damage. While the mucus layers of various bony fish species have been investigated, the composition and glycan profiles of shark skin mucus remain relatively unexplored. In this pilot study, we aimed to explore the structure and composition of shark skin mucus through histological analysis and glycan profiling. Histological examination of skin samples from Atlantic spiny dogfish (Squalus acanthias) sharks and chain catsharks (Scyliorhinus retifer) revealed distinct mucin-producing cells and a mucus layer, indicating the presence of a functional mucus layer similar to bony fish mucus albeit thinner. Glycan profiling using liquid chromatography-electrospray ionization tandem mass spectrometry unveiled a diverse repertoire of mostly O-glycans in the mucus of the two sharks as well as little skate (Leucoraja erinacea). Elasmobranch glycans differ significantly from bony fish, especially in being more sulfated, and some bear resemblance to human glycans, such as gastric mucin O-glycans and H blood group-type glycans. This study contributes to the concept of shark skin having unique properties and provides a foundation for further research into the functional roles and potential biomedical implications of shark skin mucus glycans.
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Affiliation(s)
- Etty Bachar-Wikstrom
- Dermatology and Venereology Division, Department of Medicine (Solna), Karolinska Institutet, 17177 Stockholm, Sweden
- Whitman Center, Marine Biological Laboratory, Woods Hole, MA 02543, USA
| | - Kristina A. Thomsson
- Proteomics Core Facility of Sahlgrenska Academy, University of Gothenburg, 41390 Gothenburg, Sweden
| | - Carina Sihlbom
- Proteomics Core Facility of Sahlgrenska Academy, University of Gothenburg, 41390 Gothenburg, Sweden
| | - Lisa Abbo
- Whitman Center, Marine Biological Laboratory, Woods Hole, MA 02543, USA
| | - Haitham Tartor
- Department of Fish Health and Welfare, Norwegian Veterinary Institute, P.O. Box 750, Sentrum, 0106 Oslo, Norway
| | - Sara K. Lindén
- Department of Medical Biochemistry and Cell Biology, Institute of Biomedicine, Sahlgrenska Academy, University of Gothenburg, P.O. Box 440, Medicinaregatan 9C, 40530 Gothenburg, Sweden
| | - Jakob D. Wikstrom
- Dermatology and Venereology Division, Department of Medicine (Solna), Karolinska Institutet, 17177 Stockholm, Sweden
- Whitman Center, Marine Biological Laboratory, Woods Hole, MA 02543, USA
- Dermato-Venereology Clinic, Karolinska University Hospital, 17176 Stockholm, Sweden
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6
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Noborn F, Nilsson J, Sihlbom C, Nikpour M, Kjellén L, Larson G. Mapping the Human Chondroitin Sulfate Glycoproteome Reveals an Unexpected Correlation Between Glycan Sulfation and Attachment Site Characteristics. Mol Cell Proteomics 2023; 22:100617. [PMID: 37453717 PMCID: PMC10424144 DOI: 10.1016/j.mcpro.2023.100617] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Revised: 07/07/2023] [Accepted: 07/12/2023] [Indexed: 07/18/2023] Open
Abstract
Chondroitin sulfate proteoglycans (CSPGs) control key events in human health and disease and are composed of chondroitin sulfate (CS) polysaccharide(s) attached to different core proteins. Detailed information on the biological effects of site-specific CS structures is scarce as the polysaccharides are typically released from their core proteins prior to analysis. Here we present a novel glycoproteomic approach for site-specific sequencing of CS modifications from human urine. Software-assisted and manual analysis revealed that certain core proteins carried CS with abundant sulfate modifications, while others carried CS with lower levels of sulfation. Inspection of the amino acid sequences surrounding the attachment sites indicated that the acidity of the attachment site motifs increased the levels of CS sulfation, and statistical analysis confirmed this relationship. However, not only the acidity but also the sequence and characteristics of specific amino acids in the proximity of the serine glycosylation site correlated with the degree of sulfation. These results demonstrate attachment site-specific characteristics of CS polysaccharides of CSPGs in human urine and indicate that this novel method may assist in elucidating the biosynthesis and functional roles of CSPGs in cellular physiology.
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Affiliation(s)
- Fredrik Noborn
- Department of Laboratory Medicine, Institute of Biomedicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Jonas Nilsson
- Proteomics Core Facility, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Carina Sihlbom
- Proteomics Core Facility, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Mahnaz Nikpour
- Department of Laboratory Medicine, Institute of Biomedicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Lena Kjellén
- Department of Medical Biochemistry and Microbiology, Uppsala University, Uppsala, Sweden
| | - Göran Larson
- Department of Laboratory Medicine, Institute of Biomedicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden; Laboratory of Clinical Chemistry, Sahlgrenska University Hospital, Gothenburg, Sweden.
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7
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Fabrik I, Bilkei-Gorzo O, Öberg M, Fabrikova D, Fuchs J, Sihlbom C, Göransson M, Härtlova A. Lung macrophages utilize unique cathepsin K-dependent phagosomal machinery to degrade intracellular collagen. Life Sci Alliance 2023; 6:e202201535. [PMID: 36697252 PMCID: PMC9877437 DOI: 10.26508/lsa.202201535] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Revised: 12/22/2022] [Accepted: 01/03/2023] [Indexed: 01/26/2023] Open
Abstract
Resident tissue macrophages are organ-specialized phagocytes responsible for the maintenance and protection of tissue homeostasis. It is well established that tissue diversity is reflected by the heterogeneity of resident tissue macrophage origin and phenotype. However, much less is known about tissue-specific phagocytic and proteolytic macrophage functions. Here, using a quantitative proteomics approach, we identify cathepsins as key determinants of phagosome maturation in primary peritoneum-, lung-, and brain-resident macrophages. The data further uncover cathepsin K (CtsK) as a molecular marker for lung phagosomes required for intracellular protein and collagen degradation. Pharmacological blockade of CtsK activity diminished phagosomal proteolysis and collagenolysis in lung-resident macrophages. Furthermore, profibrotic TGF-β negatively regulated CtsK-mediated phagosomal collagen degradation independently from classical endocytic-proteolytic pathways. In humans, phagosomal CtsK activity was reduced in COPD lung macrophages and non-COPD lung macrophages exposed to cigarette smoke extract. Taken together, this study provides a comprehensive map of how peritoneal, lung, and brain tissue environment shapes phagosomal composition, revealing CtsK as a key molecular determinant of lung phagosomes contributing to phagocytic collagen clearance in lungs.
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Affiliation(s)
- Ivo Fabrik
- Institute of Biomedicine, Department of Microbiology, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
- Wallenberg Centre for Molecular and Translational Medicine, University of Gothenburg, Gothenburg, Sweden
- Biomedical Research Centre, University Hospital Hradec Kralove, Hradec Kralove, Czech Republic
| | - Orsolya Bilkei-Gorzo
- Institute of Biomedicine, Department of Microbiology, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
- Wallenberg Centre for Molecular and Translational Medicine, University of Gothenburg, Gothenburg, Sweden
| | - Maria Öberg
- Institute of Biomedicine, Department of Microbiology, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
- Wallenberg Centre for Molecular and Translational Medicine, University of Gothenburg, Gothenburg, Sweden
| | - Daniela Fabrikova
- Institute of Biomedicine, Department of Microbiology, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
- Wallenberg Centre for Molecular and Translational Medicine, University of Gothenburg, Gothenburg, Sweden
| | - Johannes Fuchs
- Proteomics Core Facility, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Carina Sihlbom
- Proteomics Core Facility, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Melker Göransson
- Bioscience COPD/IPF, Research and Early Development, Respiratory and Immunology (R&I), BioPharmaceuticals R&D, AstraZeneca, Gothenburg, Sweden
| | - Anetta Härtlova
- Institute of Biomedicine, Department of Microbiology, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
- Wallenberg Centre for Molecular and Translational Medicine, University of Gothenburg, Gothenburg, Sweden
- Institute of Medical Microbiology and Hygiene, Faculty of Medicine, Medical Center-University of Freiburg, Freiburg, Germany
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8
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Alfredsson J, Fabrik I, Gorreja F, Caër C, Sihlbom C, Block M, Börjesson LG, Lindskog EB, Wick MJ. Isobaric labeling-based quantitative proteomics of FACS-purified immune cells and epithelial cells from the intestine of Crohn's disease patients reveals proteome changes of potential importance in disease pathogenesis. Proteomics 2023; 23:e2200366. [PMID: 36479858 DOI: 10.1002/pmic.202200366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Revised: 11/30/2022] [Accepted: 11/30/2022] [Indexed: 12/13/2022]
Abstract
Crohn's disease (CD) is a chronic condition characterized by recurrent flares of inflammation in the gastrointestinal tract. Disease etiology is poorly understood and is characterized by dysregulated immune activation that progressively destroys intestinal tissue. Key cellular compartments in disease pathogenesis are the intestinal epithelial layer and its underlying lamina propria. While the epithelium contains predominantly epithelial cells, the lamina propria is enriched in immune cells. Deciphering proteome changes in different cell populations is important to understand CD pathogenesis. Here, using isobaric labeling-based quantitative proteomics, we perform an exploratory study to analyze in-depth proteome changes in epithelial cells, immune cells and stromal cells in CD patients compared to controls using cells purified by FACS. Our study revealed increased proteins associated with neutrophil degranulation and mitochondrial metabolism in immune cells of CD intestinal mucosa. We also found upregulation of proteins involved in glycosylation and secretory pathways in epithelial cells of CD patients, while proteins involved in mitochondrial metabolism were reduced. The distinct alterations in protein levels in immune- versus epithelial cells underscores the utility of proteome analysis of defined cell types. Moreover, our workflow allowing concomitant assessment of cell-type specific changes on an individual basis enables deeper insight into disease pathogenesis.
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Affiliation(s)
- Johannes Alfredsson
- Department of Microbiology and Immunology, Institute of Biomedicine, University of Gothenburg, Gothenburg, Sweden
| | - Ivo Fabrik
- Department of Microbiology and Immunology, Institute of Biomedicine, University of Gothenburg, Gothenburg, Sweden.,Wallenberg Centre for Molecular and Translational Medicine, University of Gothenburg, Gothenburg, Sweden
| | - Frida Gorreja
- Department of Microbiology and Immunology, Institute of Biomedicine, University of Gothenburg, Gothenburg, Sweden
| | - Charles Caër
- Department of Microbiology and Immunology, Institute of Biomedicine, University of Gothenburg, Gothenburg, Sweden
| | - Carina Sihlbom
- Proteomics Core Facility, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Mattias Block
- Department of Surgery, Institute of Clinical Sciences, University of Gothenburg, Gothenburg, Sweden
| | - Lars G Börjesson
- Department of Surgery, Institute of Clinical Sciences, University of Gothenburg, Gothenburg, Sweden
| | - Elinor Bexe Lindskog
- Department of Surgery, Institute of Clinical Sciences, University of Gothenburg, Gothenburg, Sweden
| | - Mary Jo Wick
- Department of Microbiology and Immunology, Institute of Biomedicine, University of Gothenburg, Gothenburg, Sweden
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9
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Noborn F, Thomsen C, Vorontsov E, Bobbio E, Sihlbom C, Nilsson J, Polte CL, Bollano E, Vukusic K, Sandstedt J, Dellgren G, Karason K, Oldfors A, Larson G. Subtyping of cardiac amyloidosis by mass spectrometry-based proteomics of endomyocardial biopsies. Amyloid 2023; 30:96-108. [PMID: 36209425 DOI: 10.1080/13506129.2022.2127088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Abstract
BACKGROUND Cardiac amyloidosis is a severe condition leading to restrictive cardiomyopathy and heart failure. Mass spectrometry-based methods for cardiac amyloid subtyping have become important diagnostic tools but are currently used only in a few reference laboratories. Such methods include laser-capture microdissection to ensure the specific analysis of amyloid deposits. Here we introduce a direct proteomics-based method for subtyping of cardiac amyloidosis. METHODS Endomyocardial biopsies were retrospectively analysed from fresh frozen material of 78 patients with cardiac amyloidosis and from 12 biopsies of unused donor heart explants. Cryostat sections were digested with trypsin and analysed with liquid chromatography - mass spectrometry, and data were evaluated by proteomic software. RESULTS With a diagnostic threshold set to 70% for each of the four most common amyloid proteins affecting the heart (LC κ, LC λ, TTR and SAA), 65 of the cases (87%) could be diagnosed, and of these, 61 cases (94%) were in concordance with the original diagnoses. The specimens were also analysed for the summed intensities of the amyloid signature proteins (ApoE, ApoA-IV and SAP). The intensities were significantly higher (p < 0.001) for all assigned cases compared with controls. CONCLUSION Cardiac amyloidosis can be successfully subtyped without the prior enrichment of amyloid deposits with laser microdissection.
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Affiliation(s)
- Fredrik Noborn
- Department of Laboratory Medicine, Institute of Biomedicine, Sahlgrenska Academy at the University of Gothenburg, Gothenburg, Sweden
| | - Christer Thomsen
- Department of Clinical Pathology, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Egor Vorontsov
- Proteomics Core Facility, Sahlgrenska Academy at the University of Gothenburg, Gothenburg, Sweden
| | - Emanuele Bobbio
- Department of Cardiology, Sahlgrenska Academy, University of Gothenburg, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Carina Sihlbom
- Proteomics Core Facility, Sahlgrenska Academy at the University of Gothenburg, Gothenburg, Sweden
| | - Jonas Nilsson
- Department of Laboratory Medicine, Institute of Biomedicine, Sahlgrenska Academy at the University of Gothenburg, Gothenburg, Sweden.,Proteomics Core Facility, Sahlgrenska Academy at the University of Gothenburg, Gothenburg, Sweden
| | - Christian L Polte
- Institute of Medicine, Sahlgrenska Academy at the University of Gothenburg, Gothenburg, Sweden.,Department of Clinical Physiology, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Entela Bollano
- Department of Cardiology, Sahlgrenska Academy, University of Gothenburg, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Kristina Vukusic
- Department of Laboratory Medicine, Institute of Biomedicine, Sahlgrenska Academy at the University of Gothenburg, Gothenburg, Sweden.,Department of Clinical Chemistry, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Joakim Sandstedt
- Department of Laboratory Medicine, Institute of Biomedicine, Sahlgrenska Academy at the University of Gothenburg, Gothenburg, Sweden.,Department of Clinical Chemistry, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Göran Dellgren
- Department of Cardiothoracic Surgery and Transplant Institute, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Kristjan Karason
- Department of Cardiology, Sahlgrenska Academy, University of Gothenburg, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Anders Oldfors
- Department of Laboratory Medicine, Institute of Biomedicine, Sahlgrenska Academy at the University of Gothenburg, Gothenburg, Sweden.,Department of Clinical Pathology, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Göran Larson
- Department of Laboratory Medicine, Institute of Biomedicine, Sahlgrenska Academy at the University of Gothenburg, Gothenburg, Sweden.,Department of Clinical Chemistry, Sahlgrenska University Hospital, Gothenburg, Sweden
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10
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Norén Å, Oltean M, Friman S, Molinaro A, Mölne J, Sihlbom C, Herlenius G, Thorsell A. Liver Graft Proteomics Reveals Potential Incipient Mechanisms behind Early Renal Dysfunction after Liver Transplantation. Int J Mol Sci 2022; 23:ijms231911929. [PMID: 36233231 PMCID: PMC9569532 DOI: 10.3390/ijms231911929] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Revised: 09/30/2022] [Accepted: 10/04/2022] [Indexed: 12/04/2022] Open
Abstract
Acute kidney injury (AKI) is frequent after liver transplantation (LT) and correlates with later development of chronic kidney disease. Its etiology is multifactorial and combines pre-, intra-, and postoperative factors. Additionally, the liver graft itself seems an important element in the development of AKI, yet the detailed mechanisms remain unclear. We hypothesized that grafts of LT recipients developing significant early AKI may show distinct proteomic alterations, and we set out to identify proteome differences between LT recipients developing moderate or severe AKI (n = 7) and LT recipients without early renal injury (n = 7). Liver biopsies obtained one hour after reperfusion were assessed histologically and using quantitative proteomics. Several cytokines and serum amyloid A2 (SAA2) were analyzed in serum samples obtained preoperatively, 2−4 h, and 20−24 h after graft reperfusion, respectively. LT induced mild histological alterations without significant differences between groups but uniformly altered liver function tests peaking on postoperative day 1, with a trend towards more severe alterations in patients developing AKI. Global quantitative proteomic analysis revealed 136 proteins differing significantly in their expression levels (p < 0.05, FC 20%): 80 proteins had higher and 56 had lower levels in the AKI group. Most of these proteins were related to immune and inflammatory responses, host defense, and neutrophil degranulation. No differences between the studied pro- and anti-inflammatory cytokines or SAA2 between groups were found at any moment. Our results suggest that grafts of LT patients who develop early AKI reveal a distinct proteome dominated by an early yet prominent activation of the innate immunity. These findings support the hypothesis that AKI after LT may be favored by certain graft characteristics.
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Affiliation(s)
- Åsa Norén
- The Transplant Institute, Sahlgrenska University Hospital, 41345 Gothenburg, Sweden
- Department of Surgery, Institute of Clinical Sciences, Sahlgrenska Academy at the University of Gothenburg, 41345 Gothenburg, Sweden
| | - Mihai Oltean
- The Transplant Institute, Sahlgrenska University Hospital, 41345 Gothenburg, Sweden
- Department of Surgery, Institute of Clinical Sciences, Sahlgrenska Academy at the University of Gothenburg, 41345 Gothenburg, Sweden
- Correspondence:
| | - Styrbjörn Friman
- The Transplant Institute, Sahlgrenska University Hospital, 41345 Gothenburg, Sweden
- Department of Surgery, Institute of Clinical Sciences, Sahlgrenska Academy at the University of Gothenburg, 41345 Gothenburg, Sweden
| | - Antonio Molinaro
- Wallenberg Laboratory, Department of Molecular and Clinical Medicine, Sahlgrenska Academy at the University of Gothenburg, 41345 Gothenburg, Sweden
| | - Johan Mölne
- Department of Laboratory Medicine, Institute of Biomedicine, Sahlgrenska Academy at the University of Gothenburg, 40530 Gothenburg, Sweden
| | - Carina Sihlbom
- Proteomics Core Facility, Sahlgrenska Academy at the University of Gothenburg, Medicinaregatan 5, 41390 Gothenburg, Sweden
| | - Gustaf Herlenius
- The Transplant Institute, Sahlgrenska University Hospital, 41345 Gothenburg, Sweden
- Department of Surgery, Institute of Clinical Sciences, Sahlgrenska Academy at the University of Gothenburg, 41345 Gothenburg, Sweden
| | - Annika Thorsell
- Proteomics Core Facility, Sahlgrenska Academy at the University of Gothenburg, Medicinaregatan 5, 41390 Gothenburg, Sweden
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11
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Taskinen MR, Björnson E, Matikainen N, Söderlund S, Rämo J, Ainola MM, Hakkarainen A, Sihlbom C, Thorsell A, Andersson L, Bergh PO, Henricsson M, Romeo S, Adiels M, Ripatti S, Laakso M, Packard CJ, Borén J. Postprandial metabolism of apolipoproteins B48, B100, C-III and E in humans with APOC3 loss-of-function mutations. JCI Insight 2022; 7:160607. [PMID: 36040803 DOI: 10.1172/jci.insight.160607] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Accepted: 08/26/2022] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND Apolipoprotein CIII is a regulator of triglyceride (TG) metabolism, and due to its association with risk of cardiovascular disease, is an emergent target for pharmacological intervention. The impact of substantially lowering apoC-III on lipoprotein metabolism is not clear. METHODS We investigated the kinetics of apolipoproteins B48 and B100 in chylomicrons, VLDL1, VLDL2, IDL and LDL in subjects heterozygous for a loss-of-function (LOF) mutation in the APOC3 gene. Studies were conducted in the post-prandial state to provide a more comprehensive view of the influence of this protein on TG transport. RESULTS Compared to non-LOF subjects, a genetically-determined decrease in apoC-III resulted in marked acceleration of lipolysis of triglyceride-rich lipoproteins (TRL), increased removal of VLDL remnants from the bloodstream, and a substantial decrease in circulating levels of VLDL1, VLDL2 and IDL particles. Production rates for apolipoprotein B48-containing chylomicrons and apoB100-containing VLDL1 and VLDL2 were not different between LOF carriers and non-carriers. Likewise, the rate of production of LDL was not affected by the lower apoC-III level, nor was the concentration of LDL-apoB100 or its clearance rate. CONCLUSION These findings indicate that apoC-III lowering will have a marked effect on TRL and remnant metabolism, with possibly significant consequences for cardiovascular disease prevention. TRIAL REGISTRATIONS Clinical Trials NCT04209816 and NCT01445730FUNDING. This project was funded by grants from Swedish Heart-Lung Foundation, Swedish Research Council, ALF grant from the Sahlgrenska University Hospital, Novo Nordisk Foundation, Sigrid Juselius Foundation, Helsinki University Hospital Government Research funds, Finnish Heart Foundation, and Finnish Diabetes Research Foundation.
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Affiliation(s)
- Marja-Riitta Taskinen
- Research Programs Unit, Clinical and Molecular Medicine, University of Helsinki, Helsinki, Finland
| | - Elias Björnson
- Department of Molecular and Clinical Medicine, Institute of Medicine, University of Gothenburg, Gothenburg, Sweden
| | - Niina Matikainen
- Research Programs Unit, Clinical and Molecular Medicine, University of Helsinki, Helsinki, Finland
| | - Sanni Söderlund
- Research Programs Unit, Clinical and Molecular Medicine, University of Helsinki, Helsinki, Finland
| | - Joel Rämo
- Institute for Molecular Medicine Finland, Helsinki Institute of Life Scienc, University of Helsinki, Helsinki, Finland
| | - Mari-Mia Ainola
- Research Programs Unit, Clinical and Molecular Medicine, University of Helsinki, Helsinki, Finland
| | - Antti Hakkarainen
- HUS Medical Imaging Center, Radiology, University of Helsinki, Helsinki, Finland
| | - Carina Sihlbom
- Proteomics Facility, University of Gothenburg, Gothenburg, Sweden
| | - Annika Thorsell
- Proteomics Facility, University of Gothenburg, Gothenburg, Sweden
| | - Linda Andersson
- Department of Molecular and Clinical Medicine, Institute of Medicine, University of Gothenburg, Gothenburg, Sweden
| | - Per-Olof Bergh
- Department of Molecular and Clinical Medicine, Institute of Medicine, University of Gothenburg, Gothenburg, Sweden
| | - Marcus Henricsson
- Department of Molecular and Clinical Medicine, Institute of Medicine, University of Gothenburg, Gothenburg, Sweden
| | - Stefano Romeo
- Department of Molecular and Clinical Medicine, Institute of Medicine, University of Gothenburg, Gothenburg, Sweden
| | - Martin Adiels
- Department of Molecular and Clinical Medicine, Institute of Medicine, University of Gothenburg, Gothenburg, Sweden
| | - Samuli Ripatti
- Institute for Molecular Medicine Finland, Helsinki Institute of Life Scienc, University of Helsinki, Helsinki, Finland
| | - Markku Laakso
- Department of Medicine, University of Kuopio, Kuopio, Finland
| | - Chris J Packard
- Institute of Cardiovascular and Medical Sciences, University of Glasgow, Glasgow, United Kingdom
| | - Jan Borén
- Department of Molecular and Clinical Medicine, Institute of Medicine, University of Gothenburg, Gothenburg, Sweden
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12
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Radwanska A, Cottage CT, Piras A, Overed-Sayer C, Sihlbom C, Budida R, Wrench C, Connor J, Monkley S, Hazon P, Schluter H, Thomas MJ, Hogaboam CM, Murray LA. Increased expression and accumulation of GDF15 in IPF extracellular matrix contribute to fibrosis. JCI Insight 2022; 7:153058. [PMID: 35993367 PMCID: PMC9462497 DOI: 10.1172/jci.insight.153058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Accepted: 07/15/2022] [Indexed: 11/17/2022] Open
Abstract
Idiopathic pulmonary fibrosis (IPF) is a chronic disease of unmet medical need. It is characterized by formation of scar tissue leading to a progressive and irreversible decline in lung function. IPF is associated with repeated injury, which may alter the composition of the extracellular matrix (ECM). Here, we demonstrate that IPF patient–derived pulmonary ECM drives profibrotic response in normal human lung fibroblasts (NHLF) in a 3D spheroid assay. Next, we reveal distinct alterations in composition of the diseased ECM, identifying potentially novel associations with IPF. Growth differentiation factor 15 (GDF15) was identified among the most significantly upregulated proteins in the IPF lung–derived ECM. In vivo, GDF15 neutralization in a bleomycin-induced lung fibrosis model led to significantly less fibrosis. In vitro, recombinant GDF15 (rGDF15) stimulated α smooth muscle actin (αSMA) expression in NHLF, and this was mediated by the activin receptor-like kinase 5 (ALK5) receptor. Furthermore, in the presence of rGDF15, the migration of NHLF in collagen gel was reduced. In addition, we observed a cell type–dependent effect of GDF15 on the expression of cell senescence markers. Our data suggest that GDF15 mediates lung fibrosis through fibroblast activation and differentiation, implicating a potential direct role of this matrix-associated cytokine in promoting aberrant cell responses in disease.
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Affiliation(s)
- Agata Radwanska
- Bioscience COPD/IPF, Research and Early Development, Respiratory and Immunology (R&I), BioPharmaceuticals R&D, AstraZeneca, Gothenburg, Sweden
| | - Christopher Travis Cottage
- Bioscience COPD/IPF, Research and Early Development, R&I, Biopharmaceuticals R&D, AstraZeneca, Gaithersburg, Maryland, USA
| | - Antonio Piras
- Bioscience In Vivo, Research and Early Development, R&I, BioPharmaceuticals R&D, AstraZeneca, Gothenburg, Sweden
| | - Catherine Overed-Sayer
- Bioscience COPD/IPF, Research and Early Development, R&I, BioPharmaceuticals R&D, AstraZeneca, Cambridge, United Kingdom
| | - Carina Sihlbom
- Proteomics Core Facility of Sahlgrenska Academy, University of Gothenburg, Sweden
| | - Ramachandramouli Budida
- Translational Science and Experimental Medicine, Research and Early Development, R&I, BioPharmaceuticals R&D, AstraZeneca, Gothenburg, Sweden
| | - Catherine Wrench
- Bioscience COPD/IPF, Research and Early Development, R&I, BioPharmaceuticals R&D, AstraZeneca, Cambridge, United Kingdom
| | - Jane Connor
- Bioscience COPD/IPF, Research and Early Development, R&I, Biopharmaceuticals R&D, AstraZeneca, Gaithersburg, Maryland, USA
| | - Susan Monkley
- Translational Science and Experimental Medicine, Research and Early Development, R&I, BioPharmaceuticals R&D, AstraZeneca, Gothenburg, Sweden
| | - Petra Hazon
- Bioscience COPD/IPF, Research and Early Development, Respiratory and Immunology (R&I), BioPharmaceuticals R&D, AstraZeneca, Gothenburg, Sweden
| | - Holger Schluter
- Bioscience COPD/IPF, Research and Early Development, Respiratory and Immunology (R&I), BioPharmaceuticals R&D, AstraZeneca, Gothenburg, Sweden
| | - Matthew J. Thomas
- Bioscience COPD/IPF, Research and Early Development, Respiratory and Immunology (R&I), BioPharmaceuticals R&D, AstraZeneca, Gothenburg, Sweden
| | | | - Lynne A. Murray
- Bioscience COPD/IPF, Research and Early Development, R&I, BioPharmaceuticals R&D, AstraZeneca, Cambridge, United Kingdom
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13
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Taskinen MR, Matikainen N, Björnson E, Söderlund S, Ainola M, Hakkarainen A, Lundbom N, Sihlbom C, Thorsell A, Andersson L, Adiels M, Hartmann B, Deacon CF, Holst JJ, Packard CJ, Borén J. Role of endogenous incretins in the regulation of postprandial lipoprotein metabolism. Eur J Endocrinol 2022; 187:75-84. [PMID: 35521766 DOI: 10.1530/eje-21-1187] [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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Accepted: 04/22/2022] [Indexed: 11/08/2022]
Abstract
OBJECTIVE Incretins are known to influence lipid metabolism in the intestine when administered as pharmacologic agents. The aggregate influence of endogenous incretins on chylomicron production and clearance is less clear, particularly in light of opposing effects of co-secreted hormones. Here, we tested the hypothesis that physiological levels of incretins may impact on production or clearances rates of chylomicrons and VLDL. DESIGN AND METHODS A group of 22 overweight/obese men was studied to determine associations between plasma levels of glucagon-like peptides 1 and 2 (GLP-1 and GLP-2) and glucose-dependent insulinotropic polypeptide (GIP) after a fat-rich meal and the production and clearance rates of apoB48- and apoB100-containing triglyceride-rich lipoproteins. Subjects were stratified by above- and below-median incretin response (area under the curve). RESULTS Stratification yielded subgroups that differed about two-fold in incretin response. There were neither differences in apoB48 production rates in chylomicrons or VLDL fractions nor in apoB100 or triglyceride kinetics in VLDL between men with above- vs below-median incretin responses. The men with above-median GLP-1 and GLP-2 responses exhibited higher postprandial plasma and chylomicron triglyceride levels, but this could not be related to altered kinetic parameters. No differences were found between incretin response subgroups and particle clearance rates. CONCLUSION We found no evidence for a regulatory effect of endogenous incretins on contemporaneous chylomicron or VLDL metabolism following a standardised fat-rich meal. The actions of incretins at pharmacological doses may not be reflected at physiological levels of these hormones.
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Affiliation(s)
- Marja-Riitta Taskinen
- Research Programs Unit, Clinical and Molecular Metabolism, University of Helsinki, Helsinki, Finland
| | - Niina Matikainen
- Research Programs Unit, Clinical and Molecular Metabolism, University of Helsinki, Helsinki, Finland
- Endocrinology, Abdominal Center, Helsinki University Hospital, Helsinki, Finland
| | - Elias Björnson
- Department of Molecular and Clinical Medicine, Institute of Medicine, University of Gothenburg, Gothenburg, Sweden
| | - Sanni Söderlund
- Research Programs Unit, Clinical and Molecular Metabolism, University of Helsinki, Helsinki, Finland
- Endocrinology, Abdominal Center, Helsinki University Hospital, Helsinki, Finland
| | - Mari Ainola
- Research Programs Unit, Clinical and Molecular Metabolism, University of Helsinki, Helsinki, Finland
| | - Antti Hakkarainen
- HUS Medical Imaging Center, Radiology, Helsinki University Hospital, University of Helsinki, Helsinki, Finland
| | - Nina Lundbom
- HUS Medical Imaging Center, Radiology, Helsinki University Hospital, University of Helsinki, Helsinki, Finland
| | - Carina Sihlbom
- Proteomics Facility, University of Gothenburg, Gothenburg, Sweden
| | - Annika Thorsell
- Proteomics Facility, University of Gothenburg, Gothenburg, Sweden
| | - Linda Andersson
- Department of Molecular and Clinical Medicine, Institute of Medicine, University of Gothenburg, Gothenburg, Sweden
| | - Martin Adiels
- Department of Molecular and Clinical Medicine, Institute of Medicine, University of Gothenburg, Gothenburg, Sweden
| | - Bolette Hartmann
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Carolyn F Deacon
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
- School of Biomedical Sciences, Ulster University, Coleraine, UK
| | - Jens J Holst
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
- Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Chris J Packard
- Institute of Cardiovascular and Medical Sciences, University of Glasgow, Glasgow, UK
| | - Jan Borén
- Department of Molecular and Clinical Medicine, Institute of Medicine, University of Gothenburg, Gothenburg, Sweden
- Wallenberg Laboratory, Sahlgrenska University Hospital, Gothenburg, Sweden
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14
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Cansby E, Kumari S, Caputo M, Xia Y, Porosk R, Robinson J, Wang H, Olsson BM, Vallin J, Grantham J, Soomets U, Svensson LT, Sihlbom C, Marschall HU, Edsfeldt A, Goncalves I, Mahlapuu M. Silencing of STE20-type kinase STK25 in human aortic endothelial and smooth muscle cells is atheroprotective. Commun Biol 2022; 5:379. [PMID: 35440683 PMCID: PMC9018782 DOI: 10.1038/s42003-022-03309-9] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Accepted: 03/22/2022] [Indexed: 02/07/2023] Open
Abstract
Recent studies highlight the importance of lipotoxic damage in aortic cells as the major pathogenetic contributor to atherosclerotic disease. Since the STE20-type kinase STK25 has been shown to exacerbate ectopic lipid storage and associated cell injury in several metabolic organs, we here investigate its role in the main cell types of vasculature. We depleted STK25 by small interfering RNA in human aortic endothelial and smooth muscle cells exposed to oleic acid and oxidized LDL. In both cell types, the silencing of STK25 reduces lipid accumulation and suppresses activation of inflammatory and fibrotic pathways as well as lowering oxidative and endoplasmic reticulum stress. Notably, in smooth muscle cells, STK25 inactivation hinders the shift from a contractile to a synthetic phenotype. Together, we provide several lines of evidence that antagonizing STK25 signaling in human aortic endothelial and smooth muscle cells is atheroprotective, highlighting this kinase as a new potential therapeutic target for atherosclerotic disease. Silencing of STK25, an STE20-type kinase, in human aortic endothelial and smooth muscle cells reduces lipid accumulation and suppresses inflammation and fibrotic pathways, ultimately exerting atheroprotective effects.
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Affiliation(s)
- Emmelie Cansby
- Department of Chemistry and Molecular Biology, University of Gothenburg and Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Sima Kumari
- Department of Chemistry and Molecular Biology, University of Gothenburg and Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Mara Caputo
- Department of Chemistry and Molecular Biology, University of Gothenburg and Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Ying Xia
- Department of Chemistry and Molecular Biology, University of Gothenburg and Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Rando Porosk
- Department of Biochemistry, Institute of Biomedicine and Translational Medicine, University of Tartu, Tartu, Estonia
| | - Jonathan Robinson
- Department of Biology and Biological Engineering, National Bioinformatics Infrastructure Sweden, Science for Life Laboratory, Chalmers University of Technology, Gothenburg, Sweden
| | - Hao Wang
- Department of Biology and Biological Engineering, National Bioinformatics Infrastructure Sweden, Science for Life Laboratory, Chalmers University of Technology, Gothenburg, Sweden
| | | | - Josefine Vallin
- Department of Chemistry and Molecular Biology, University of Gothenburg and Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Julie Grantham
- Department of Chemistry and Molecular Biology, University of Gothenburg and Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Ursel Soomets
- Department of Biochemistry, Institute of Biomedicine and Translational Medicine, University of Tartu, Tartu, Estonia
| | - L Thomas Svensson
- Department of Biology and Biological Engineering, National Bioinformatics Infrastructure Sweden, Science for Life Laboratory, Chalmers University of Technology, Gothenburg, Sweden
| | - Carina Sihlbom
- Proteomics Core Facility, University of Gothenburg, Gothenburg, Sweden
| | - Hanns-Ulrich Marschall
- Department of Molecular and Clinical Medicine/Wallenberg Laboratory, Institute of Medicine, University of Gothenburg and Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Andreas Edsfeldt
- Department of Clinical Sciences Malmö, Clinical Research Center, Lund University, Malmö, Sweden.,Department of Cardiology, Skåne University Hospital, Lund/Malmö, Sweden.,Wallenberg Center for Molecular Medicine, Lund University, Malmö, Sweden
| | - Isabel Goncalves
- Department of Clinical Sciences Malmö, Clinical Research Center, Lund University, Malmö, Sweden.,Department of Cardiology, Skåne University Hospital, Lund/Malmö, Sweden
| | - Margit Mahlapuu
- Department of Chemistry and Molecular Biology, University of Gothenburg and Sahlgrenska University Hospital, Gothenburg, Sweden.
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15
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Mirgorodskaya E, Dransart E, Shafaq-Zadah M, Roderer D, Sihlbom C, Leffler H, Johannes L. Site-specific N-glycan profiles of α 5 β 1 integrin from rat liver. Biol Cell 2022; 114:160-176. [PMID: 35304921 DOI: 10.1111/boc.202200017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Revised: 12/03/2021] [Accepted: 03/14/2022] [Indexed: 11/02/2022]
Abstract
BACKGROUND INFORMATION Like most other cell surface proteins, α5 β1 integrin is glycosylated, which is required for its various activities in ways that mostly remain to be determined. RESULTS Here, we have established the first comprehensive site-specific glycan map of α5 β1 integrin that was purified from a natural source, i.e., rat liver. This analysis revealed striking site selective variations in glycan composition. Complex bi, tri or tetraantennary N-glycans were predominant at various proportions at most potential N-glycosylation sites. A few of these sites were non-glycosylated or contained high mannose or hybrid glycans, indicating that early N-glycan processing was hindered. Almost all complex N-glycans had fully galactosylated and sialylated antennae. Moderate levels of core fucosylation and high levels of O-acetylation of NeuAc residues were observed at certain sites. An O-linked HexNAc was found in an EGF-like domain of β1 integrin. The extensive glycan information that results from our study was projected onto a map of α5 β1 integrin that was obtained by homology modeling. We have used this model for the discussion of how glycosylation might be used in the functional cycle of α5 β1 integrin. A striking example concerns the involvement of glycan-binding galectins in the regulation of the molecular homeostasis of glycoproteins at the cell surface through the formation of lattices or endocytic pits according to the glycolipid-lectin (GL-Lect) hypothesis. CONCLUSION We expect that the glycoproteomics data of the current study will serve as a resource for the exploration of structural mechanisms by which glycans control α5 β1 integrin activity and endocytic trafficking. SIGNIFICANCE Glycosylation of α5 β1 integrin has been implicated in multiple aspects of integrin function and structure. Yet, detailed knowledge of its glycosylation, notably the specific sites of glycosylation, is lacking. Furthermore, the α5 β1 integrin preparation that was analyzed here is from a natural source, which is of importance as there is not a lot of literature in the field about the glycosylation of 'native' glycoproteins. This article is protected by copyright. All rights reserved.
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Affiliation(s)
| | - Estelle Dransart
- Institut Curie, Université PSL, U1143 INSERM, UMR3666 CNRS, Cellular and Chemical Biology unit, 26 rue d'Ulm, 75248, Paris, Cedex, 05, France
| | - Massiullah Shafaq-Zadah
- Institut Curie, Université PSL, U1143 INSERM, UMR3666 CNRS, Cellular and Chemical Biology unit, 26 rue d'Ulm, 75248, Paris, Cedex, 05, France
| | - Daniel Roderer
- Leibniz-Forschungsinstitut für Molekulare Pharmakologie (FMP), Robert-Rössle-Strasse 10, Berlin, 13125, Germany
| | - Carina Sihlbom
- Proteomics Core Facility, Sahlgrenska Academy, University of Gothenburg, Sweden
| | - Hakon Leffler
- Section MIG (Microbiology, Immunology, Glycobiology), Department of Laboratory Medicine, Lund University, Sweden
| | - Ludger Johannes
- Institut Curie, Université PSL, U1143 INSERM, UMR3666 CNRS, Cellular and Chemical Biology unit, 26 rue d'Ulm, 75248, Paris, Cedex, 05, France
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16
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Abstract
In this chapter, we describe a glycoproteomic approach for the identification of novel chondroitin sulfate proteoglycans (CSPGs) using a combination of biochemical enrichments, enzymatic digestions, and nanoscale liquid chromatography tandem mass spectrometry (nLC-MS/MS) analysis. The identification is achieved by trypsin digestion of CSPG-containing samples, followed by enrichment of chondroitin sulfate (CS) glycopeptides by strong anion exchange chromatography (SAX). The enriched CS glycopeptides are then digested with chondroitinase ABC to depolymerize the CS polysaccharides, generating a residual hexasaccharide structure, composed of the linkage region tetrasaccharide extended with a terminal dehydrated disaccharide, still attached to the peptide. The obtained CS glycopeptides are analyzed by nLC-MS/MS, and the generated data sets are evaluated through proteomic software with adjustment in the settings to allow for glycopeptide identification. This approach has enabled the identification of several novel core proteins in human samples and in Caenorhabditis elegans. Here we specifically describe the procedure for the enrichment and characterization of CS glycopeptides from human cerebrospinal fluid (CSF).
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Affiliation(s)
- Fredrik Noborn
- Department of Laboratory Medicine, Institute of Biomedicine, Sahlgrenska Academy at the University of Gothenburg, Gothenburg, Sweden
| | - Mahnaz Nikpour
- Department of Laboratory Medicine, Institute of Biomedicine, Sahlgrenska Academy at the University of Gothenburg, Gothenburg, Sweden
| | - Andrea Persson
- Department of Laboratory Medicine, Institute of Biomedicine, Sahlgrenska Academy at the University of Gothenburg, Gothenburg, Sweden
| | - Carina Sihlbom
- Proteomics Core Facility, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Jonas Nilsson
- Department of Laboratory Medicine, Institute of Biomedicine, Sahlgrenska Academy at the University of Gothenburg, Gothenburg, Sweden.,Laboratory of Clinical Chemistry, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Göran Larson
- Department of Laboratory Medicine, Institute of Biomedicine, Sahlgrenska Academy at the University of Gothenburg, Gothenburg, Sweden. .,Laboratory of Clinical Chemistry, Sahlgrenska University Hospital, Gothenburg, Sweden.
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17
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Banerjee D, Nayakawde NB, Antony D, Deshmukh M, Ghosh S, Sihlbom C, Berger E, Haq UU, Olausson M. Characterization of decellularized implants for ECM integrity and immune response elicitation. Tissue Eng Part A 2021; 28:621-639. [PMID: 34963315 DOI: 10.1089/ten.tea.2021.0146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Biological scaffold is a popular choice for the preparation of tissue-engineered organs and has the potential to address donor shortages in clinics. However, biological scaffolds prepared by physical or chemical agents cause damage to the extracellular matrix by potentially inducing immune responses after implantation. The current study explores the fate of the decellularized scaffolds using a cocktail of chemicals following implantation without using immunosuppressants. Using the syngeneic (Lewis male- Lewis female) and allogeneic (Brown Norway male- Lewis female) models and different tissue routes (subcutaneous vs omentum) for implantation, we applied in-depth quantitative proteomics, genomics along with histology and quantitative image analysis tools to comprehensively describe and compare the proteins following decellularization and post-implantation. Our data helped to identify any alteration post decullarization as well implantation. We could also monitor route-specific modulation of the Extracellular matrix (ECM) and regulation of the immune responses (macrophage and T cells) following implantation. The current approach opens up the possibility to monitor the fate of biological scaffolds in terms of the ECM and immune response against the implants. In addition, the identification of different routes helped us to identify differential immune responses against the implants. This study opens up the potential to identify the changes associated with chemical decellularization both pre and post-implantation, which could further help to promote research in this direction.
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Affiliation(s)
- Debashish Banerjee
- Sahlgrenska University Hospital, 56749, Transplantation Surgery, Goteborg, Sweden;
| | - Nikhil B Nayakawde
- Sahlgrenska University Hospital, 56749, Transplantation Surgery, Goteborg, Sweden;
| | - Deepti Antony
- University of Gothenburg Sahlgrenska Academy, 70712, Transplantation Surgery, Goteborg, Sweden;
| | - Meghshree Deshmukh
- Sahlgrenska University Hospital, 56749, Transplantation Surgery, Goteborg, Sweden;
| | - Sudip Ghosh
- Lunds Universitet, 5193, Proteomic Hematology, Lund Stem Cell Center, Lund University, Lund, Sweden;
| | - Carina Sihlbom
- University of Gothenburg, 3570, Proteomics core facility, Goteborg, Sweden;
| | - Evelin Berger
- Sahlgrenska Academy, 70712, Proteomics core facility, University of Gothenburg, Sweden , Goteborg, Sweden;
| | - Uzair Ul Haq
- Sahlgrenska University Hospital, 56749, Surgery, Goteborg, Sweden;
| | - Michael Olausson
- Goteborgs universitet Sahlgrenska Akademin, 70712, Transplantation Surgery, Goteborg, Sweden.,Sahlgrenska University Hospital, 56749, Transplantation Surgery, Goteborg, Sweden;
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18
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Yu R, Vorontsov E, Sihlbom C, Nielsen J. Quantifying absolute gene expression profiles reveals distinct regulation of central carbon metabolism genes in yeast. eLife 2021; 10:e65722. [PMID: 33720010 PMCID: PMC8016476 DOI: 10.7554/elife.65722] [Citation(s) in RCA: 9] [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: 12/13/2020] [Accepted: 03/13/2021] [Indexed: 12/18/2022] Open
Abstract
In addition to controlled expression of genes by specific regulatory circuits, the abundance of proteins and transcripts can also be influenced by physiological states of the cell such as growth rate and metabolism. Here we examine the control of gene expression by growth rate and metabolism, by analyzing a multi-omics dataset consisting of absolute-quantitative abundances of the transcriptome, proteome, and amino acids in 22 steady-state yeast cultures. We find that transcription and translation are coordinately controlled by the cell growth rate via RNA polymerase II and ribosome abundance, but they are independently controlled by nitrogen metabolism via amino acid and nucleotide availabilities. Genes in central carbon metabolism, however, are distinctly regulated and do not respond to the cell growth rate or nitrogen metabolism as all other genes. Understanding these effects allows the confounding factors of growth rate and metabolism to be accounted for in gene expression profiling studies.
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Affiliation(s)
- Rosemary Yu
- Department of Biology and Biological Engineering, Chalmers University of TechnologyGothenburgSweden
- Novo Nordisk Foundation Center for Biosustainability, Chalmers University of TechnologyGothenburgSweden
| | - Egor Vorontsov
- Proteomics Core Facility, Sahlgrenska Academy, University of GothenburgGothenburgSweden
| | - Carina Sihlbom
- Proteomics Core Facility, Sahlgrenska Academy, University of GothenburgGothenburgSweden
| | - Jens Nielsen
- Department of Biology and Biological Engineering, Chalmers University of TechnologyGothenburgSweden
- Novo Nordisk Foundation Center for Biosustainability, Chalmers University of TechnologyGothenburgSweden
- Novo Nordisk Foundation Center for Biosustainability, Technical University of DenmarkLyngbyDenmark
- BioInnovation InstituteCopenhagenDenmark
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19
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Methe K, Nayakawde NB, Banerjee D, Sihlbom C, Agbajogu C, Travnikova G, Olausson M. Differential Activation of Immune Cells for Genetically Different Decellularized Cardiac Tissues. Tissue Eng Part A 2020; 26:1180-1198. [DOI: 10.1089/ten.tea.2020.0055] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Affiliation(s)
- Ketaki Methe
- Laboratory for Transplantation and Regenerative Medicine, Gothenburg University, Gothenburg, Sweden
| | - Nikhil B. Nayakawde
- Laboratory for Transplantation and Regenerative Medicine, Gothenburg University, Gothenburg, Sweden
| | - Debashish Banerjee
- Laboratory for Transplantation and Regenerative Medicine, Gothenburg University, Gothenburg, Sweden
| | - Carina Sihlbom
- Proteomics Core Facility, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | | | - Galyna Travnikova
- Laboratory for Transplantation and Regenerative Medicine, Gothenburg University, Gothenburg, Sweden
| | - Michael Olausson
- Laboratory for Transplantation and Regenerative Medicine, Gothenburg University, Gothenburg, Sweden
- Department of Transplantation Surgery at Sahlgrenska Academy, University of Gothenburg, Sahlgrenska University Hospital, Gothenburg, Sweden
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20
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Björnson E, Packard CJ, Adiels M, Andersson L, Matikainen N, Söderlund S, Kahri J, Hakkarainen A, Lundbom N, Lundbom J, Sihlbom C, Thorsell A, Zhou H, Taskinen MR, Borén J. Apolipoprotein B48 metabolism in chylomicrons and very low-density lipoproteins and its role in triglyceride transport in normo- and hypertriglyceridemic human subjects. J Intern Med 2020; 288:422-438. [PMID: 31846520 DOI: 10.1111/joim.13017] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
BACKGROUND Renewed interest in triglyceride-rich lipoproteins as causative agents in cardiovascular disease mandates further exploration of the integrated metabolism of chylomicrons and very low-density lipoproteins (VLDL). METHODS Novel tracer techniques and an integrated multi-compartmental model were used to determine the kinetics of apoB48- and apoB100-containing particles in the chylomicron and VLDL density intervals in 15 subjects with a wide range of plasma triglyceride levels. RESULTS Following a fat-rich meal, apoB48 appeared in the chylomicron, VLDL1 and VLDL2 fractions in all subjects. Chylomicrons cleared rapidly from the circulation but apoB48-containing VLDL accumulated, and over the day were 3-fold higher in those with high versus low plasma triglyceride. ApoB48-containing particles were secreted directly into both the chylomicron and VLDL fractions at rates that were similar across the plasma triglyceride range studied. During fat absorption, whilst most triglyceride entered the circulation in chylomicrons, the majority of apoB48 particles were secreted into the VLDL density range. CONCLUSION The intestine secretes apoB48-containing particles not only as chylomicrons but also directly into the VLDL1 and VLDL2 density ranges both in the basal state and during dietary lipid absorption. Over the day, apoB48-containing particles appear to comprise about 20-25% of circulating VLDL and, especially in those with elevated triglycerides, form part of a slowly cleared 'remnant' particle population, thereby potentially increasing CHD risk. These findings provide a metabolic understanding of the potential consequences for increased CHD risk when slowed lipolysis leads to the accumulation of remnants, especially in individuals with hypertriglyceridemia.
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Affiliation(s)
- E Björnson
- Department of Molecular and Clinical Medicine, University of Gothenburg, Gothenburg, Sweden
| | - C J Packard
- Institute of Cardiovascular and Medical Sciences, University of Glasgow, Glasgow, UK
| | - M Adiels
- Department of Molecular and Clinical Medicine, University of Gothenburg, Gothenburg, Sweden
| | - L Andersson
- Department of Molecular and Clinical Medicine, University of Gothenburg, Gothenburg, Sweden
| | - N Matikainen
- Research Programs Unit, Clinical and Molecular Metabolism, University of Helsinki, Helsinki, Finland.,Endocrinology, Abdominal Center, Helsinki University Hospital, Helsinki, Finland
| | - S Söderlund
- Research Programs Unit, Clinical and Molecular Metabolism, University of Helsinki, Helsinki, Finland.,Endocrinology, Abdominal Center, Helsinki University Hospital, Helsinki, Finland
| | - J Kahri
- Department of Internal Medicine and Rehabilitation, Helsinki University Hospital, Helsinki, Finland
| | - A Hakkarainen
- Radiology, HUS Medical Imaging Center, Helsinki University Hospital, University of Helsinki, Helsinki, Finland.,Department of Neuroscience and Biomedical Engineering, Aalto University School of Science, Espoo, Finland
| | - N Lundbom
- Radiology, HUS Medical Imaging Center, Helsinki University Hospital, University of Helsinki, Helsinki, Finland
| | - J Lundbom
- Radiology, HUS Medical Imaging Center, Helsinki University Hospital, University of Helsinki, Helsinki, Finland
| | - C Sihlbom
- Proteomics Facility, University of Gothenburg, Gothenburg, Sweden
| | - A Thorsell
- Proteomics Facility, University of Gothenburg, Gothenburg, Sweden
| | - H Zhou
- Merck Research Laboratories, Merck & Co. Inc., Kenilworth, NJ, USA
| | - M-R Taskinen
- Research Programs Unit, Clinical and Molecular Metabolism, University of Helsinki, Helsinki, Finland
| | - J Borén
- Department of Molecular and Clinical Medicine, University of Gothenburg, Gothenburg, Sweden.,Sahlgrenska University Hospital, Gothenburg, Sweden
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21
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Bergemalm D, Ramström S, Kardeby C, Hultenby K, Eremo AG, Sihlbom C, Bergström J, Palmblad J, Åström M. Platelet proteome and function in X–linked thrombocytopenia with thalassemia and in silico comparisons with gray platelet syndrome. Haematologica 2020; 106:2947-2959. [PMID: 33054111 PMCID: PMC8561286 DOI: 10.3324/haematol.2020.249805] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Indexed: 12/02/2022] Open
Abstract
In X-linked thrombocytopenia with thalassemia (XLTT; OMIM 314050), caused by the mutation p.R216Q in exon 4 of the GATA1 gene, male hemizygous patients display macrothrombocytopenia, bleeding diathesis and a b-thalassemia trait. Herein, we describe findings in two unrelated Swedish XLTT families with a bleeding tendency exceeding what is expected from the thrombocytopenia. Blood tests revealed low P-PAI-1 and P-factor 5, and elevated S-thrombopoietin levels. Transmission electron microscopy showed diminished numbers of platelet a- and dense granules. The proteomes of isolated blood platelets from five male XLTT patients, compared to five sex- and agematched controls, were explored. Quantitative mass spectrometry showed alterations of 83 proteins (fold change ≥±1.2, q<0.05). Of 46 downregulated proteins, 39 were previously reported to be associated with platelet granules. Reduced protein levels of PTGS1 and SLC35D3 were validated in megakaryocytes of XLTT bone marrow biopsies by immunohistochemistry. Platelet function testing by flow cytometry revealed low dense- and a-granule release and fibrinogen binding in response to ligation of receptors for ADP, the thrombin receptor PAR4 and the collagen receptor GPVI. Significant reductions of a number of agranule proteins overlapped with a previous platelet proteomics investigation in the inherited macrothrombocytopenia gray platelet syndrome. In contrast, Ca2+ transporter proteins that facilitate dense granule release were downregulated in XLTT but upregulated in gray platelet syndrome. Ingenuity pathway analysis showed altered coagulation system and protein ubiquitination pathways in the XLTT platelets. Collectively, the results revealed protein and functional alterations affecting platelet a- and dense granules in XLTT, probably contributing to bleeding.
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Affiliation(s)
- Daniel Bergemalm
- Department of Medicine, Faculty of Medicine and Health, Örebro University, Örebro
| | - Sofia Ramström
- Department of Clinical Chemistry, and Department of Biomedical and Clinical Sciences, Linköping University, Linköping, Sweden; Cardiovascular Research Centre, School of Medical Sciences, Örebro University, Örebro
| | - Caroline Kardeby
- Cardiovascular Research Centre, School of Medical Sciences, Örebro University, Örebro
| | - Kjell Hultenby
- Department of Laboratory Medicine, Karolinska Institutet, Karolinska University Hospital Huddinge, Stockholm
| | - Anna Göthlin Eremo
- Department of Clinical Research Laboratory, Faculty of Medicine and Health, Örebro University, Örebro
| | - Carina Sihlbom
- Proteomics Core Facility, University of Gothenburg, Gothenburg
| | | | - Jan Palmblad
- Departments of Medicine and Hematology, Karolinska Institutet, Karolinska University Hospital Huddinge, Stockholm
| | - Maria Åström
- Department of Medicine, Faculty of Medicine and Health, Örebro University, Örebro.
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22
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Lindsay WR, Friesen CR, Sihlbom C, Bergström J, Berger E, Wilson MR, Olsson M. Vitellogenin offsets oxidative costs of reproduction in female painted dragon lizards. J Exp Biol 2020; 223:jeb221630. [PMID: 32393548 DOI: 10.1242/jeb.221630] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Accepted: 05/05/2020] [Indexed: 12/18/2022]
Abstract
Vitellogenesis ('yolking' of follicles) is a bioenergetically costly stage of reproduction requiring enlargement of the liver to produce vitellogenin (VTG) yolk precursor proteins, which are transported and deposited at the ovary. VTG may, however, serve non-nutritive anti-oxidant functions, a hypothesis supported by empirical work on aging and other life-history transitions in several taxa. We test this hypothesis in female painted dragon lizards (Ctenophorus pictus) by examining covariation in VTG with the ovarian cycle, and relative to reactive oxygen species (ROS) including baseline superoxide (bSO). Plasma VTG decreased prior to ovulation, when VTG is deposited into follicles. VTG, however, remained elevated post-ovulation when no longer necessary for yolk provisioning and was unrelated to reproductive investment. Instead, VTG was strongly and positively predicted by prior bSO. ROS, in turn, was negatively predicted by prior VTG, while simultaneously sampled VTG was a positive predictor. These findings are consistent with the hypothesis that VTG functions as an anti-oxidant to counteract oxidative stress associated with vitellogenesis. The relationship between bSO and VTG was strongest in post-ovulatory females, indicating that its function may be largely anti-oxidant at this time. In conclusion, VTG may be under selection to offset oxidative costs of reproduction in egg-producing species.
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Affiliation(s)
- Willow R Lindsay
- Department of Biological and Environmental Sciences, University of Gothenburg, SE 405 30 Gothenburg, Sweden
| | - Christopher R Friesen
- School of Chemistry and Molecular Bioscience and Molecular Horizons Research Institute, The University of Wollongong, Wollongong, NSW 2522, Australia
| | - Carina Sihlbom
- Proteomics Core Facility of Sahlgrenska Academy, University of Gothenburg, SE 405 30 Gothenburg, Sweden
| | - Jörgen Bergström
- Proteomics Core Facility of Sahlgrenska Academy, University of Gothenburg, SE 405 30 Gothenburg, Sweden
| | - Evelin Berger
- Proteomics Core Facility of Sahlgrenska Academy, University of Gothenburg, SE 405 30 Gothenburg, Sweden
| | - Mark R Wilson
- School of Chemistry and Molecular Bioscience and Molecular Horizons Research Institute, The University of Wollongong, Wollongong, NSW 2522, Australia
- Illawarra Health and Medical Research Institute, Wollongong, NSW 2522, Australia
| | - Mats Olsson
- Department of Biological and Environmental Sciences, University of Gothenburg, SE 405 30 Gothenburg, Sweden
- School of Chemistry and Molecular Bioscience and Molecular Horizons Research Institute, The University of Wollongong, Wollongong, NSW 2522, Australia
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23
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Yu R, Campbell K, Pereira R, Björkeroth J, Qi Q, Vorontsov E, Sihlbom C, Nielsen J. Nitrogen limitation reveals large reserves in metabolic and translational capacities of yeast. Nat Commun 2020; 11:1881. [PMID: 32312967 PMCID: PMC7171132 DOI: 10.1038/s41467-020-15749-0] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [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: 09/16/2019] [Accepted: 03/25/2020] [Indexed: 12/22/2022] Open
Abstract
Cells maintain reserves in their metabolic and translational capacities as a strategy to quickly respond to changing environments. Here we quantify these reserves by stepwise reducing nitrogen availability in yeast steady-state chemostat cultures, imposing severe restrictions on total cellular protein and transcript content. Combining multi-omics analysis with metabolic modeling, we find that seven metabolic superpathways maintain >50% metabolic capacity in reserve, with glucose metabolism maintaining >80% reserve capacity. Cells maintain >50% reserve in translational capacity for 2490 out of 3361 expressed genes (74%), with a disproportionately large reserve dedicated to translating metabolic proteins. Finally, ribosome reserves contain up to 30% sub-stoichiometric ribosomal proteins, with activation of reserve translational capacity associated with selective upregulation of 17 ribosomal proteins. Together, our dataset provides a quantitative link between yeast physiology and cellular economics, which could be leveraged in future cell engineering through targeted proteome streamlining. Cells maintain reserves in their metabolic and translational capacities enabling fast response to changing environments. Here, the authors quantify reserves in yeast by stepwise reduction in nitrogen availability and a combination of multi-omic analysis and metabolic modelling.
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Affiliation(s)
- Rosemary Yu
- Department of Biology and Biological Engineering, Chalmers University of Technology, SE-412 96, Gothenburg, Sweden.,Novo Nordisk Foundation Center for Biosustainability, Chalmers University of Technology, SE-412 96, Gothenburg, Sweden
| | - Kate Campbell
- Department of Biology and Biological Engineering, Chalmers University of Technology, SE-412 96, Gothenburg, Sweden.,Novo Nordisk Foundation Center for Biosustainability, Chalmers University of Technology, SE-412 96, Gothenburg, Sweden
| | - Rui Pereira
- Department of Biology and Biological Engineering, Chalmers University of Technology, SE-412 96, Gothenburg, Sweden.,Novo Nordisk Foundation Center for Biosustainability, Chalmers University of Technology, SE-412 96, Gothenburg, Sweden
| | - Johan Björkeroth
- Department of Biology and Biological Engineering, Chalmers University of Technology, SE-412 96, Gothenburg, Sweden.,Novo Nordisk Foundation Center for Biosustainability, Chalmers University of Technology, SE-412 96, Gothenburg, Sweden
| | - Qi Qi
- Department of Biology and Biological Engineering, Chalmers University of Technology, SE-412 96, Gothenburg, Sweden.,Novo Nordisk Foundation Center for Biosustainability, Chalmers University of Technology, SE-412 96, Gothenburg, Sweden
| | - Egor Vorontsov
- Proteomics Core Facility, Sahlgrenska Academy, University of Gothenburg, SE-413 90, Gothenburg, Sweden
| | - Carina Sihlbom
- Proteomics Core Facility, Sahlgrenska Academy, University of Gothenburg, SE-413 90, Gothenburg, Sweden
| | - Jens Nielsen
- Department of Biology and Biological Engineering, Chalmers University of Technology, SE-412 96, Gothenburg, Sweden. .,Novo Nordisk Foundation Center for Biosustainability, Chalmers University of Technology, SE-412 96, Gothenburg, Sweden. .,Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, DK-2800 Kgs, Lyngby, Denmark. .,BioInnovation Institute, Ole Måløes Vej 3, DK-2200, Copenhagen N, Denmark.
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24
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Zakerkish F, Brännström M, Carlsohn E, Sihlbom C, van der Post S, Thoroddsen A. Proteomic analysis of follicular fluid during human ovulation. Acta Obstet Gynecol Scand 2020; 99:917-924. [PMID: 31945183 DOI: 10.1111/aogs.13805] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [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: 07/06/2019] [Revised: 12/10/2019] [Accepted: 12/20/2019] [Indexed: 12/18/2022]
Abstract
INTRODUCTION Human ovulation is a biologically complex process that involves several biochemical factors, promoting follicular rupture and release of a fertilizable oocyte. Proteins which are present in follicular fluid at high concentrations during ovulation are likely to be active participants in the biochemical pathways of ovulation. The aim of the study was to identify, by use of a modern proteomic technique, proteins of human follicular fluid which are differentially regulated during ovulation of the natural menstrual cycle. MATERIAL AND METHODS This prospective experimental study over 3 years included women planned for laparoscopic sterilization. During surgery, retrieval of the dominant follicle was performed either at the preovulatory stage or during ovulation. Four women of preovulatory phase and four women of ovulatory phase met the predetermined criteria of hormone levels for respective phases, and samples of these were finally included out of the 15 women operated. Follicular fluid was aspirated from the excised follicle and subjected to mass spectrometry with the isobaric tags for relative and absolute quantification (iTRAQ) technology for isobaric tagging of peptides. This enables simultaneous identification and quantification of proteins. The protein profiles of the follicular fluid of the preovulatory phase and the ovulatory phase were analyzed, and proteins that were present were identified. RESULTS A total of 502 proteins were identified, several of which previously have not been identified in human follicular fluid. Of the 115 proteins that were found in all samples, 20 proteins were at higher levels during ovulation. These were inflammatory-related proteins, coagulation factors, proteins in lipid metabolism, complement factors and antioxidants. Five proteins were present in lower levels during ovulation, with three being enzymes and the other two proteins of lipid metabolism and iron transport. CONCLUSIONS Twenty-five follicular fluid proteins, with differential regulation during ovulation, were identified in human follicular fluid of the natural menstrual cycle. These proteins may have essential roles in the ovulatory cascade.
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Affiliation(s)
- Farnosh Zakerkish
- Department of Obstetrics and Gynecology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.,Stockholm IVF EUGIN, Stockholm, Sweden
| | - Mats Brännström
- Department of Obstetrics and Gynecology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.,Stockholm IVF EUGIN, Stockholm, Sweden
| | - Elisabet Carlsohn
- Proteomics Core Facility, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Carina Sihlbom
- Proteomics Core Facility, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Sjoerd van der Post
- Proteomics Core Facility, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Asgeir Thoroddsen
- Department of Obstetrics and Gynecology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
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Bobbio E, Bollano E, Esmaily S, Thomsen C, Noborn F, Sihlbom C, Vorontsov E, Dellgren G, Larson G, Oldfors A, Karason K. Clinical Diagnosis and Subtyping of Cardiac Amyloidosis by Mass Spectrometry. J Heart Lung Transplant 2020. [DOI: 10.1016/j.healun.2020.01.897] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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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De Leoz MLA, Duewer DL, Fung A, Liu L, Yau HK, Potter O, Staples GO, Furuki K, Frenkel R, Hu Y, Sosic Z, Zhang P, Altmann F, Grunwald-Grube C, Shao C, Zaia J, Evers W, Pengelley S, Suckau D, Wiechmann A, Resemann A, Jabs W, Beck A, Froehlich JW, Huang C, Li Y, Liu Y, Sun S, Wang Y, Seo Y, An HJ, Reichardt NC, Ruiz JE, Archer-Hartmann S, Azadi P, Bell L, Lakos Z, An Y, Cipollo JF, Pucic-Bakovic M, Štambuk J, Lauc G, Li X, Wang PG, Bock A, Hennig R, Rapp E, Creskey M, Cyr TD, Nakano M, Sugiyama T, Leung PKA, Link-Lenczowski P, Jaworek J, Yang S, Zhang H, Kelly T, Klapoetke S, Cao R, Kim JY, Lee HK, Lee JY, Yoo JS, Kim SR, Suh SK, de Haan N, Falck D, Lageveen-Kammeijer GSM, Wuhrer M, Emery RJ, Kozak RP, Liew LP, Royle L, Urbanowicz PA, Packer NH, Song X, Everest-Dass A, Lattová E, Cajic S, Alagesan K, Kolarich D, Kasali T, Lindo V, Chen Y, Goswami K, Gau B, Amunugama R, Jones R, Stroop CJM, Kato K, Yagi H, Kondo S, Yuen CT, Harazono A, Shi X, Magnelli PE, Kasper BT, Mahal L, Harvey DJ, O'Flaherty R, Rudd PM, Saldova R, Hecht ES, Muddiman DC, Kang J, Bhoskar P, Menard D, Saati A, Merle C, Mast S, Tep S, Truong J, Nishikaze T, Sekiya S, Shafer A, Funaoka S, Toyoda M, de Vreugd P, Caron C, Pradhan P, Tan NC, Mechref Y, Patil S, Rohrer JS, Chakrabarti R, Dadke D, Lahori M, Zou C, Cairo C, Reiz B, Whittal RM, Lebrilla CB, Wu L, Guttman A, Szigeti M, Kremkow BG, Lee KH, Sihlbom C, Adamczyk B, Jin C, Karlsson NG, Örnros J, Larson G, Nilsson J, Meyer B, Wiegandt A, Komatsu E, Perreault H, Bodnar ED, Said N, Francois YN, Leize-Wagner E, Maier S, Zeck A, Heck AJR, Yang Y, Haselberg R, Yu YQ, Alley W, Leone JW, Yuan H, Stein SE. NIST Interlaboratory Study on Glycosylation Analysis of Monoclonal Antibodies: Comparison of Results from Diverse Analytical Methods. Mol Cell Proteomics 2020; 19:11-30. [PMID: 31591262 PMCID: PMC6944243 DOI: 10.1074/mcp.ra119.001677] [Citation(s) in RCA: 67] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Revised: 08/26/2019] [Indexed: 01/24/2023] Open
Abstract
Glycosylation is a topic of intense current interest in the development of biopharmaceuticals because it is related to drug safety and efficacy. This work describes results of an interlaboratory study on the glycosylation of the Primary Sample (PS) of NISTmAb, a monoclonal antibody reference material. Seventy-six laboratories from industry, university, research, government, and hospital sectors in Europe, North America, Asia, and Australia submitted a total of 103 reports on glycan distributions. The principal objective of this study was to report and compare results for the full range of analytical methods presently used in the glycosylation analysis of mAbs. Therefore, participation was unrestricted, with laboratories choosing their own measurement techniques. Protein glycosylation was determined in various ways, including at the level of intact mAb, protein fragments, glycopeptides, or released glycans, using a wide variety of methods for derivatization, separation, identification, and quantification. Consequently, the diversity of results was enormous, with the number of glycan compositions identified by each laboratory ranging from 4 to 48. In total, one hundred sixteen glycan compositions were reported, of which 57 compositions could be assigned consensus abundance values. These consensus medians provide community-derived values for NISTmAb PS. Agreement with the consensus medians did not depend on the specific method or laboratory type. The study provides a view of the current state-of-the-art for biologic glycosylation measurement and suggests a clear need for harmonization of glycosylation analysis methods.
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Affiliation(s)
- Maria Lorna A De Leoz
- Mass Spectrometry Data Center, Biomolecular Measurement Division, Material Measurement Laboratory, National Institute of Standards and Technology, 100 Bureau Drive Gaithersburg, Maryland 20899.
| | - David L Duewer
- Chemical Sciences Division, Material Measurement Laboratory, National Institute of Standards and Technology, 100 Bureau Drive Gaithersburg, Maryland 20899
| | - Adam Fung
- Analytical Development, Agensys, Inc., 1800 Steward Street Santa Monica, California 90404
| | - Lily Liu
- Analytical Development, Agensys, Inc., 1800 Steward Street Santa Monica, California 90404
| | - Hoi Kei Yau
- Analytical Development, Agensys, Inc., 1800 Steward Street Santa Monica, California 90404
| | - Oscar Potter
- Agilent Technologies, Inc., 5301 Stevens Creek Blvd Santa Clara, California 95051
| | - Gregory O Staples
- Agilent Technologies, Inc., 5301 Stevens Creek Blvd Santa Clara, California 95051
| | - Kenichiro Furuki
- Astellas Pharma, 5-2-3 Tokodai, Tsukiba, Ibaraki, 300-2698, Japan
| | - Ruth Frenkel
- Analytical Development, Biogen, 14 Cambridge Center Cambridge, Massachusetts 02142
| | - Yunli Hu
- Analytical Development, Biogen, 14 Cambridge Center Cambridge, Massachusetts 02142
| | - Zoran Sosic
- Analytical Development, Biogen, 14 Cambridge Center Cambridge, Massachusetts 02142
| | - Peiqing Zhang
- Bioprocessing Technology Institute, 20 Biopolis Way, Level 3 Singapore 138668
| | - Friedrich Altmann
- Department of Chemistry, University of Natural Resources and Life Science, Vienna (BOKU), Muthgasse 18 1190 Wien, Austria
| | - Clemens Grunwald-Grube
- Department of Chemistry, University of Natural Resources and Life Science, Vienna (BOKU), Muthgasse 18 1190 Wien, Austria
| | - Chun Shao
- Center for Biomedical Mass Spectrometry, Boston University School of Medicine, 670 Albany Street Boston, Massachusetts 02118
| | - Joseph Zaia
- Center for Biomedical Mass Spectrometry, Boston University School of Medicine, 670 Albany Street Boston, Massachusetts 02118
| | - Waltraud Evers
- Bruker Daltonik GmbH, Fahrenheitstr. 4, 28359 Bremen, Germany
| | | | - Detlev Suckau
- Bruker Daltonik GmbH, Fahrenheitstr. 4, 28359 Bremen, Germany
| | - Anja Wiechmann
- Bruker Daltonik GmbH, Fahrenheitstr. 4, 28359 Bremen, Germany
| | - Anja Resemann
- Bruker Daltonik GmbH, Fahrenheitstr. 4, 28359 Bremen, Germany
| | - Wolfgang Jabs
- Bruker Daltonik GmbH, Fahrenheitstr. 4, 28359 Bremen, Germany; Department of Life Sciences & Technology, Beuth Hochschule für Technik Berlin, Seestraβe 64, 13347 Berlin, Germany
| | - Alain Beck
- Centre d'Immunologie Pierre Fabre, 5 Avenue Napoléon III, BP 60497, 74164 St Julien-en-Genevois, France
| | - John W Froehlich
- Department of Urology, Boston Children's Hospital, 300 Longwood Avenue Boston Massachusetts 02115
| | - Chuncui Huang
- Institute of Biophysics, Chinese Academy of Sciences, 15 Da Tun Road, Chaoyang District, Beijing 100101 China
| | - Yan Li
- Institute of Biophysics, Chinese Academy of Sciences, 15 Da Tun Road, Chaoyang District, Beijing 100101 China
| | - Yaming Liu
- Institute of Biophysics, Chinese Academy of Sciences, 15 Da Tun Road, Chaoyang District, Beijing 100101 China
| | - Shiwei Sun
- Key Lab of Intelligent Information Processing, Institute of Computing Technology, Chinese Academy of Sciences, 15 Da Tun Road, Chaoyang District, Beijing 100101 China
| | - Yaojun Wang
- Key Lab of Intelligent Information Processing, Institute of Computing Technology, Chinese Academy of Sciences, 15 Da Tun Road, Chaoyang District, Beijing 100101 China
| | - Youngsuk Seo
- Graduate School of Analytical Science and Technology, Chungnam National University, Gung-dong 220, Yuseong-Gu, Daejeon 305-764, Korea (South)
| | - Hyun Joo An
- Graduate School of Analytical Science and Technology, Chungnam National University, Gung-dong 220, Yuseong-Gu, Daejeon 305-764, Korea (South)
| | | | | | - Stephanie Archer-Hartmann
- Analytical Services, Complex Carbohydrate Research Center, University of Georgia, 315 Riverbend Road Athens, Georgia 30602
| | - Parastoo Azadi
- Analytical Services, Complex Carbohydrate Research Center, University of Georgia, 315 Riverbend Road Athens, Georgia 30602
| | - Len Bell
- BioCMC Solutions (Large Molecules), Covance Laboratories Limited, Otley Road, Harrogate, North Yorks HG3 1PY, United Kingdom
| | - Zsuzsanna Lakos
- Biochemistry Method Development & Validation, Eurofins Lancaster Laboratories, Inc., 2425 New Holland Pike Lancaster, Pennsylvania 17601
| | - Yanming An
- Center for Biologics Evaluation and Research, Food and Drug Administration, 10903 New Hampshire Avenue, Silver Spring, Maryland 20993
| | - John F Cipollo
- Center for Biologics Evaluation and Research, Food and Drug Administration, 10903 New Hampshire Avenue, Silver Spring, Maryland 20993
| | - Maja Pucic-Bakovic
- Glycoscience Research Laboratory, Genos, Borongajska cesta 83h, 10 000 Zagreb, Croatia
| | - Jerko Štambuk
- Glycoscience Research Laboratory, Genos, Borongajska cesta 83h, 10 000 Zagreb, Croatia
| | - Gordan Lauc
- Glycoscience Research Laboratory, Genos, Borongajska cesta 83h, 10 000 Zagreb, Croatia; Faculty of Pharmacy and Biochemistry, University of Zagreb, A. Kovačića 1, 10 000 Zagreb, Croatia
| | - Xu Li
- Department of Chemistry, Georgia State University, 100 Piedmont Avenue, Atlanta, Georgia 30303
| | - Peng George Wang
- Department of Chemistry, Georgia State University, 100 Piedmont Avenue, Atlanta, Georgia 30303
| | - Andreas Bock
- glyXera GmbH, Brenneckestrasse 20 * ZENIT / 39120 Magdeburg, Germany
| | - René Hennig
- glyXera GmbH, Brenneckestrasse 20 * ZENIT / 39120 Magdeburg, Germany
| | - Erdmann Rapp
- glyXera GmbH, Brenneckestrasse 20 * ZENIT / 39120 Magdeburg, Germany; AstraZeneca, Granta Park, Cambridgeshire, CB21 6GH United Kingdom
| | - Marybeth Creskey
- Health Products and Foods Branch, Health Canada, AL 2201E, 251 Sir Frederick Banting Driveway, Ottawa, Ontario, K1A 0K9 Canada
| | - Terry D Cyr
- Health Products and Foods Branch, Health Canada, AL 2201E, 251 Sir Frederick Banting Driveway, Ottawa, Ontario, K1A 0K9 Canada
| | - Miyako Nakano
- Graduate School of Advanced Sciences of Matter, Hiroshima University, 1-3-1 Kagamiyama Higashi-Hiroshima 739-8530 Japan
| | - Taiki Sugiyama
- Graduate School of Advanced Sciences of Matter, Hiroshima University, 1-3-1 Kagamiyama Higashi-Hiroshima 739-8530 Japan
| | | | - Paweł Link-Lenczowski
- Department of Medical Physiology, Jagiellonian University Medical College, ul. Michalowskiego 12, 31-126 Krakow, Poland
| | - Jolanta Jaworek
- Department of Medical Physiology, Jagiellonian University Medical College, ul. Michalowskiego 12, 31-126 Krakow, Poland
| | - Shuang Yang
- Department of Pathology, Johns Hopkins University, 400 N. Broadway Street Baltimore, Maryland 21287
| | - Hui Zhang
- Department of Pathology, Johns Hopkins University, 400 N. Broadway Street Baltimore, Maryland 21287
| | - Tim Kelly
- Mass Spec Core Facility, KBI Biopharma, 1101 Hamlin Road Durham, North Carolina 27704
| | - Song Klapoetke
- Mass Spec Core Facility, KBI Biopharma, 1101 Hamlin Road Durham, North Carolina 27704
| | - Rui Cao
- Mass Spec Core Facility, KBI Biopharma, 1101 Hamlin Road Durham, North Carolina 27704
| | - Jin Young Kim
- Division of Mass Spectrometry, Korea Basic Science Institute, 162 YeonGuDanji-Ro, Ochang-eup, Cheongwon-gu, Cheongju Chungbuk, 363-883 Korea (South)
| | - Hyun Kyoung Lee
- Division of Mass Spectrometry, Korea Basic Science Institute, 162 YeonGuDanji-Ro, Ochang-eup, Cheongwon-gu, Cheongju Chungbuk, 363-883 Korea (South)
| | - Ju Yeon Lee
- Division of Mass Spectrometry, Korea Basic Science Institute, 162 YeonGuDanji-Ro, Ochang-eup, Cheongwon-gu, Cheongju Chungbuk, 363-883 Korea (South)
| | - Jong Shin Yoo
- Division of Mass Spectrometry, Korea Basic Science Institute, 162 YeonGuDanji-Ro, Ochang-eup, Cheongwon-gu, Cheongju Chungbuk, 363-883 Korea (South)
| | - Sa-Rang Kim
- Advanced Therapy Products Research Division, Korea National Institute of Food and Drug Safety, 187 Osongsaengmyeong 2-ro Osong-eup, Heungdeok-gu, Cheongju-si, Chungcheongbuk-do, 363-700, Korea (South)
| | - Soo-Kyung Suh
- Advanced Therapy Products Research Division, Korea National Institute of Food and Drug Safety, 187 Osongsaengmyeong 2-ro Osong-eup, Heungdeok-gu, Cheongju-si, Chungcheongbuk-do, 363-700, Korea (South)
| | - Noortje de Haan
- Center for Proteomics and Metabolomics, Leiden University Medical Center, P.O. Box 9600, 2300 RC Leiden, The Netherlands
| | - David Falck
- Center for Proteomics and Metabolomics, Leiden University Medical Center, P.O. Box 9600, 2300 RC Leiden, The Netherlands
| | | | - Manfred Wuhrer
- Center for Proteomics and Metabolomics, Leiden University Medical Center, P.O. Box 9600, 2300 RC Leiden, The Netherlands
| | - Robert J Emery
- Ludger Limited, Culham Science Centre, Abingdon, Oxfordshire, OX14 3EB, United Kingdom
| | - Radoslaw P Kozak
- Ludger Limited, Culham Science Centre, Abingdon, Oxfordshire, OX14 3EB, United Kingdom
| | - Li Phing Liew
- Ludger Limited, Culham Science Centre, Abingdon, Oxfordshire, OX14 3EB, United Kingdom
| | - Louise Royle
- Ludger Limited, Culham Science Centre, Abingdon, Oxfordshire, OX14 3EB, United Kingdom
| | - Paulina A Urbanowicz
- Ludger Limited, Culham Science Centre, Abingdon, Oxfordshire, OX14 3EB, United Kingdom
| | - Nicolle H Packer
- Biomolecular Discovery and Design Research Centre and ARC Centre of Excellence for Nanoscale BioPhotonics (CNBP), Macquarie University, North Ryde, Australia
| | - Xiaomin Song
- Biomolecular Discovery and Design Research Centre and ARC Centre of Excellence for Nanoscale BioPhotonics (CNBP), Macquarie University, North Ryde, Australia
| | - Arun Everest-Dass
- Biomolecular Discovery and Design Research Centre and ARC Centre of Excellence for Nanoscale BioPhotonics (CNBP), Macquarie University, North Ryde, Australia
| | - Erika Lattová
- Proteomics, Central European Institute for Technology, Masaryk University, Kamenice 5, A26, 625 00 BRNO, Czech Republic
| | - Samanta Cajic
- Max Planck Institute for Dynamics of Complex Technical Systems, Sandtorstrasse 1, 39106 Magdeburg, Germany
| | - Kathirvel Alagesan
- Department of Biomolecular Sciences, Max Planck Institute of Colloids and Interfaces, 14424 Potsdam, Germany
| | - Daniel Kolarich
- Department of Biomolecular Sciences, Max Planck Institute of Colloids and Interfaces, 14424 Potsdam, Germany
| | - Toyin Kasali
- AstraZeneca, Granta Park, Cambridgeshire, CB21 6GH United Kingdom
| | - Viv Lindo
- AstraZeneca, Granta Park, Cambridgeshire, CB21 6GH United Kingdom
| | - Yuetian Chen
- Merck, 2015 Galloping Hill Rd, Kenilworth, New Jersey 07033
| | - Kudrat Goswami
- Merck, 2015 Galloping Hill Rd, Kenilworth, New Jersey 07033
| | - Brian Gau
- Analytical R&D, MilliporeSigma, 2909 Laclede Ave. St. Louis, Missouri 63103
| | - Ravi Amunugama
- MS Bioworks, LLC, 3950 Varsity Drive Ann Arbor, Michigan 48108
| | - Richard Jones
- MS Bioworks, LLC, 3950 Varsity Drive Ann Arbor, Michigan 48108
| | | | - Koichi Kato
- Exploratory Research Center on Life and Living Systems (ExCELLS), National Institutes of Natural Sciences, 5-1 Higashiyama, Myodaiji, Okazaki 444-8787 Japan; Graduate School of Pharmaceutical Sciences, Nagoya City University, 3-1 Tanabe-dori, Mizuhoku, Nagoya 467-8603 Japan
| | - Hirokazu Yagi
- Graduate School of Pharmaceutical Sciences, Nagoya City University, 3-1 Tanabe-dori, Mizuhoku, Nagoya 467-8603 Japan
| | - Sachiko Kondo
- Graduate School of Pharmaceutical Sciences, Nagoya City University, 3-1 Tanabe-dori, Mizuhoku, Nagoya 467-8603 Japan; Medical & Biological Laboratories Co., Ltd, 2-22-8 Chikusa, Chikusa-ku, Nagoya 464-0858 Japan
| | - C T Yuen
- National Institute for Biological Standards and Control, Blanche Lane, South Mimms, Potters Bar, Hertfordshire EN6 3QG United Kingdom
| | - Akira Harazono
- Division of Biological Chemistry & Biologicals, National Institute of Health Sciences, 1-18-1 Kamiyoga, Setagaya-ku, Tokyo 158-8501 Japan
| | - Xiaofeng Shi
- New England Biolabs, Inc., 240 County Road, Ipswich, Massachusetts 01938
| | - Paula E Magnelli
- New England Biolabs, Inc., 240 County Road, Ipswich, Massachusetts 01938
| | - Brian T Kasper
- New York University, 100 Washington Square East New York City, New York 10003
| | - Lara Mahal
- New York University, 100 Washington Square East New York City, New York 10003
| | - David J Harvey
- Target Discovery Institute, Nuffield Department of Medicine, University of Oxford, Roosevelt Drive, Oxford, OX3 7FZ, United Kingdom
| | - Roisin O'Flaherty
- GlycoScience Group, The National Institute for Bioprocessing Research and Training, Fosters Avenue, Mount Merrion, Blackrock, Co. Dublin, Ireland
| | - Pauline M Rudd
- GlycoScience Group, The National Institute for Bioprocessing Research and Training, Fosters Avenue, Mount Merrion, Blackrock, Co. Dublin, Ireland
| | - Radka Saldova
- GlycoScience Group, The National Institute for Bioprocessing Research and Training, Fosters Avenue, Mount Merrion, Blackrock, Co. Dublin, Ireland
| | - Elizabeth S Hecht
- Department of Chemistry, North Carolina State University, 2620 Yarborough Drive Raleigh, North Carolina 27695
| | - David C Muddiman
- Department of Chemistry, North Carolina State University, 2620 Yarborough Drive Raleigh, North Carolina 27695
| | - Jichao Kang
- Pantheon, 201 College Road East Princeton, New Jersey 08540
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- Pfizer Inc., 1 Burtt Road Andover, Massachusetts 01810
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- Proteodynamics, ZI La Varenne 20-22 rue Henri et Gilberte Goudier 63200 RIOM, France
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- ProZyme, Inc., 3832 Bay Center Place Hayward, California 94545
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- ProZyme, Inc., 3832 Bay Center Place Hayward, California 94545
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- ProZyme, Inc., 3832 Bay Center Place Hayward, California 94545
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- Koichi Tanaka Mass Spectrometry Research Laboratory, Shimadzu Corporation, 1 Nishinokyo Kuwabara-cho Nakagyo-ku, Kyoto, 604 8511 Japan
| | - Sadanori Sekiya
- Koichi Tanaka Mass Spectrometry Research Laboratory, Shimadzu Corporation, 1 Nishinokyo Kuwabara-cho Nakagyo-ku, Kyoto, 604 8511 Japan
| | - Aaron Shafer
- Children's GMP LLC, St. Jude Children's Research Hospital, 262 Danny Thomas Place Memphis, Tennessee 38105
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- Sumitomo Bakelite Co., Ltd., 1-5 Muromati 1-Chome, Nishiku, Kobe, 651-2241 Japan
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- Sumitomo Bakelite Co., Ltd., 1-5 Muromati 1-Chome, Nishiku, Kobe, 651-2241 Japan
| | - Peter de Vreugd
- Synthon Biopharmaceuticals, Microweg 22 P.O. Box 7071, 6503 GN Nijmegen, The Netherlands
| | - Cassie Caron
- Takeda Pharmaceuticals International Co., 40 Landsdowne Street Cambridge, Massachusetts 02139
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- Takeda Pharmaceuticals International Co., 40 Landsdowne Street Cambridge, Massachusetts 02139
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- Takeda Pharmaceuticals International Co., 40 Landsdowne Street Cambridge, Massachusetts 02139
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- Department of Chemistry and Biochemistry, Texas Tech University, 2500 Broadway, Lubbock, Texas 79409
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- Thermo Fisher Scientific, 1214 Oakmead Parkway Sunnyvale, California 94085
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- Thermo Fisher Scientific, 1214 Oakmead Parkway Sunnyvale, California 94085
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- United States Pharmacopeia India Pvt. Ltd. IKP Knowledge Park, Genome Valley, Shamirpet, Turkapally Village, Medchal District, Hyderabad 500 101 Telangana, India
| | - Disha Dadke
- United States Pharmacopeia India Pvt. Ltd. IKP Knowledge Park, Genome Valley, Shamirpet, Turkapally Village, Medchal District, Hyderabad 500 101 Telangana, India
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- United States Pharmacopeia India Pvt. Ltd. IKP Knowledge Park, Genome Valley, Shamirpet, Turkapally Village, Medchal District, Hyderabad 500 101 Telangana, India
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- Alberta Glycomics Centre, University of Alberta, Edmonton, Alberta T6G 2G2 Canada; Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2 Canada
| | - Christopher Cairo
- Alberta Glycomics Centre, University of Alberta, Edmonton, Alberta T6G 2G2 Canada; Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2 Canada
| | - Béla Reiz
- Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2 Canada
| | - Randy M Whittal
- Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2 Canada
| | - Carlito B Lebrilla
- Department of Chemistry, University of California, One Shields Ave, Davis, California 95616
| | - Lauren Wu
- Department of Chemistry, University of California, One Shields Ave, Davis, California 95616
| | - Andras Guttman
- Horváth Csaba Memorial Laboratory for Bioseparation Sciences, Research Center for Molecular Medicine, Doctoral School of Molecular Medicine, Faculty of Medicine, University of Debrecen, Debrecen, Egyetem ter 1, Hungary
| | - Marton Szigeti
- Horváth Csaba Memorial Laboratory for Bioseparation Sciences, Research Center for Molecular Medicine, Doctoral School of Molecular Medicine, Faculty of Medicine, University of Debrecen, Debrecen, Egyetem ter 1, Hungary; Translational Glycomics Research Group, Research Institute of Biomolecular and Chemical Engineering, University of Pannonia, Veszprem, Egyetem ut 10, Hungary
| | - Benjamin G Kremkow
- Delaware Biotechnology Institute, University of Delaware, 15 Innovation Way Newark, Delaware 19711
| | - Kelvin H Lee
- Delaware Biotechnology Institute, University of Delaware, 15 Innovation Way Newark, Delaware 19711
| | - Carina Sihlbom
- Proteomics Core Facility, University of Gothenburg, Medicinaregatan 1G SE 41390 Gothenburg, Sweden
| | - Barbara Adamczyk
- Department of Medical Biochemistry and Cell Biology, University of Gothenburg, Institute of Biomedicine, Sahlgrenska Academy, Medicinaregatan 9A, Box 440, 405 30, Gothenburg, Sweden
| | - Chunsheng Jin
- Department of Medical Biochemistry and Cell Biology, University of Gothenburg, Institute of Biomedicine, Sahlgrenska Academy, Medicinaregatan 9A, Box 440, 405 30, Gothenburg, Sweden
| | - Niclas G Karlsson
- Department of Medical Biochemistry and Cell Biology, University of Gothenburg, Institute of Biomedicine, Sahlgrenska Academy, Medicinaregatan 9A, Box 440, 405 30, Gothenburg, Sweden
| | - Jessica Örnros
- Department of Medical Biochemistry and Cell Biology, University of Gothenburg, Institute of Biomedicine, Sahlgrenska Academy, Medicinaregatan 9A, Box 440, 405 30, Gothenburg, Sweden
| | - Göran Larson
- Department of Clinical Chemistry and Transfusion Medicine, Sahlgrenska Academy at the University of Gothenburg, Bruna Straket 16, 41345 Gothenburg, Sweden
| | - Jonas Nilsson
- Department of Clinical Chemistry and Transfusion Medicine, Sahlgrenska Academy at the University of Gothenburg, Bruna Straket 16, 41345 Gothenburg, Sweden
| | - Bernd Meyer
- Department of Chemistry, University of Hamburg, Martin Luther King Pl. 6 20146 Hamburg, Germany
| | - Alena Wiegandt
- Department of Chemistry, University of Hamburg, Martin Luther King Pl. 6 20146 Hamburg, Germany
| | - Emy Komatsu
- Department of Chemistry, University of Manitoba, 144 Dysart Road, Winnipeg, Manitoba, Canada R3T 2N2
| | - Helene Perreault
- Department of Chemistry, University of Manitoba, 144 Dysart Road, Winnipeg, Manitoba, Canada R3T 2N2
| | - Edward D Bodnar
- Department of Chemistry, University of Manitoba, 144 Dysart Road, Winnipeg, Manitoba, Canada R3T 2N2; Agilent Technologies, Inc., 5301 Stevens Creek Blvd Santa Clara, California 95051
| | - Nassur Said
- Laboratory of Mass Spectrometry of Interactions and Systems, University of Strasbourg, UMR Unistra-CNRS 7140, France
| | - Yannis-Nicolas Francois
- Laboratory of Mass Spectrometry of Interactions and Systems, University of Strasbourg, UMR Unistra-CNRS 7140, France
| | - Emmanuelle Leize-Wagner
- Laboratory of Mass Spectrometry of Interactions and Systems, University of Strasbourg, UMR Unistra-CNRS 7140, France
| | - Sandra Maier
- Natural and Medical Sciences Institute, University of Tübingen, Markwiesenstraβe 55, 72770 Reutlingen, Germany
| | - Anne Zeck
- Natural and Medical Sciences Institute, University of Tübingen, Markwiesenstraβe 55, 72770 Reutlingen, Germany
| | - Albert J R Heck
- Bijvoet Center for Biomolecular Research and Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands
| | - Yang Yang
- Bijvoet Center for Biomolecular Research and Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands
| | - Rob Haselberg
- Division of Bioanalytical Chemistry, Amsterdam Institute for Molecules, Medicines and Systems, Vrije Universiteit Amsterdam, de Boelelaan 1085, 1081 HV Amsterdam, The Netherlands
| | - Ying Qing Yu
- Department of Chemistry, Waters Corporation, 34 Maple Street Milford, Massachusetts 01757
| | - William Alley
- Department of Chemistry, Waters Corporation, 34 Maple Street Milford, Massachusetts 01757
| | | | - Hua Yuan
- Zoetis, 333 Portage St. Kalamazoo, Michigan 49007
| | - Stephen E Stein
- Mass Spectrometry Data Center, Biomolecular Measurement Division, Material Measurement Laboratory, National Institute of Standards and Technology, 100 Bureau Drive Gaithersburg, Maryland 20899
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Nerstedt A, Kurhe Y, Cansby E, Caputo M, Gao L, Vorontsov E, Ståhlman M, Nuñez-Durán E, Borén J, Marschall HU, Mashek DG, Saunders DN, Sihlbom C, Hoy AJ, Mahlapuu M. Lipid droplet-associated kinase STK25 regulates peroxisomal activity and metabolic stress response in steatotic liver. J Lipid Res 2019; 61:178-191. [PMID: 31857389 DOI: 10.1194/jlr.ra119000316] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [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: 08/06/2019] [Revised: 11/05/2019] [Indexed: 12/18/2022] Open
Abstract
Nonalcoholic fatty liver disease (NAFLD) and nonalcoholic steatohepatitis (NASH) are emerging as leading causes of liver disease worldwide and have been recognized as one of the major unmet medical needs of the 21st century. Our recent translational studies in mouse models, human cell lines, and well-characterized patient cohorts have identified serine/threonine kinase (STK)25 as a protein that coats intrahepatocellular lipid droplets (LDs) and critically regulates liver lipid homeostasis and progression of NAFLD/NASH. Here, we studied the mechanism-of-action of STK25 in steatotic liver by relative quantification of the hepatic LD-associated phosphoproteome from high-fat diet-fed Stk25 knockout mice compared with their wild-type littermates. We observed a total of 131 proteins and 60 phosphoproteins that were differentially represented in STK25-deficient livers. Most notably, a number of proteins involved in peroxisomal function, ubiquitination-mediated proteolysis, and antioxidant defense were coordinately regulated in Stk25 -/- versus wild-type livers. We confirmed attenuated peroxisomal biogenesis and protection against oxidative and ER stress in STK25-deficient human liver cells, demonstrating the hepatocyte-autonomous manner of STK25's action. In summary, our results suggest that regulation of peroxisomal function and metabolic stress response may be important molecular mechanisms by which STK25 controls the development and progression of NAFLD/NASH.
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Affiliation(s)
- Annika Nerstedt
- Departments of Chemistry and Molecular Biology University of Gothenburg and Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Yeshwant Kurhe
- Departments of Chemistry and Molecular Biology University of Gothenburg and Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Emmelie Cansby
- Departments of Chemistry and Molecular Biology University of Gothenburg and Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Mara Caputo
- Departments of Chemistry and Molecular Biology University of Gothenburg and Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Lei Gao
- Departments of Chemistry and Molecular Biology University of Gothenburg and Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Egor Vorontsov
- Proteomics Core Facility, University of Gothenburg, Gothenburg, Sweden
| | - Marcus Ståhlman
- Molecular and Clinical Medicine/Wallenberg Laboratory, Institute of Medicine, University of Gothenburg and Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Esther Nuñez-Durán
- Departments of Chemistry and Molecular Biology University of Gothenburg and Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Jan Borén
- Molecular and Clinical Medicine/Wallenberg Laboratory, Institute of Medicine, University of Gothenburg and Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Hanns-Ulrich Marschall
- Molecular and Clinical Medicine/Wallenberg Laboratory, Institute of Medicine, University of Gothenburg and Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Douglas G Mashek
- Department of Biochemistry, Molecular Biology, and Biophysics, University of Minnesota, Minneapolis, MN
| | - Darren N Saunders
- School of Medical Sciences, Faculty of Medicine, University of New South Wales, Sydney, NSW, Australia
| | - Carina Sihlbom
- Proteomics Core Facility, University of Gothenburg, Gothenburg, Sweden
| | - Andrew J Hoy
- Discipline of Physiology, School of Medical Sciences, Charles Perkins Centre, University of Sydney, Sydney, NSW, Australia
| | - Margit Mahlapuu
- Departments of Chemistry and Molecular Biology University of Gothenburg and Sahlgrenska University Hospital, Gothenburg, Sweden
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28
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Adiels M, Taskinen MR, Björnson E, Andersson L, Matikainen N, Söderlund S, Kahri J, Hakkarainen A, Lundbom N, Sihlbom C, Thorsell A, Zhou H, Pietiläinen KH, Packard C, Borén J. Role of apolipoprotein C-III overproduction in diabetic dyslipidaemia. Diabetes Obes Metab 2019; 21:1861-1870. [PMID: 30972934 DOI: 10.1111/dom.13744] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/05/2019] [Revised: 04/07/2019] [Accepted: 04/09/2019] [Indexed: 12/14/2022]
Abstract
AIMS To investigate how apolipoprotein C-III (apoC-III) metabolism is altered in subjects with type 2 diabetes, whether the perturbed plasma triglyceride concentrations in this condition are determined primarily by the secretion rate or the removal rate of apoC-III, and whether improvement of glycaemic control using the glucagon-like peptide-1 analogue liraglutide for 16 weeks modifies apoC-III dynamics. MATERIALS AND METHODS Postprandial apoC-III kinetics were assessed after a bolus injection of [5,5,5-2 H3 ]leucine using ultrasensitive mass spectrometry techniques. We compared apoC-III kinetics in two situations: in subjects with type 2 diabetes before and after liraglutide therapy, and in type 2 diabetic subjects with matched body mass index (BMI) non-diabetic subjects. Liver fat content, subcutaneous abdominal and intra-abdominal fat were determined using proton magnetic resonance spectroscopy. RESULTS Improved glycaemic control by liraglutide therapy for 16 weeks significantly reduced apoC-III secretion rate (561 ± 198 vs. 652 ± 196 mg/d, P = 0.03) and apoC-III levels (10.0 ± 3.8 vs. 11.7 ± 4.3 mg/dL, P = 0.035) in subjects with type 2 diabetes. Change in apoC-III secretion rate was significantly associated with the improvement in indices of glucose control (r = 0.67; P = 0.009) and change in triglyceride area under the curve (r = 0.59; P = 0.025). In line with this, the apoC-III secretion rate was higher in subjects with type 2 diabetes compared with BMI-matched non-diabetic subjects (676 ± 208 vs. 505 ± 174 mg/d, P = 0.042). CONCLUSIONS The results reveal that the secretion rate of apoC-III is associated with elevation of triglyceride-rich lipoproteins in subjects with type 2 diabetes, potentially through the influence of glucose homeostasis on the production of apoC-III.
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Affiliation(s)
- Martin Adiels
- Department of Molecular and Clinical Medicine, University of Gothenburg, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Marja-Riitta Taskinen
- Research Program for Clinical and Molecular Metabolism, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Elias Björnson
- Department of Molecular and Clinical Medicine, University of Gothenburg, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Linda Andersson
- Department of Molecular and Clinical Medicine, University of Gothenburg, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Niina Matikainen
- Research Program for Clinical and Molecular Metabolism, Faculty of Medicine, University of Helsinki, Helsinki, Finland
- Endocrinology, Abdominal Center, Helsinki University Hospital, University of Helsinki, Helsinki, Finland
| | - Sanni Söderlund
- Research Program for Clinical and Molecular Metabolism, Faculty of Medicine, University of Helsinki, Helsinki, Finland
- Endocrinology, Abdominal Center, Helsinki University Hospital, University of Helsinki, Helsinki, Finland
| | - Juhani Kahri
- Department of Internal Medicine and Rehabilitation, Helsinki University Hospital, Helsinki, Finland
| | - Antti Hakkarainen
- HUS Medical Imaging Center, Radiology, Helsinki University Hospital, University of Helsinki, Helsinki, Finland
- Department of Neuroscience and Biomedical Engineering, Aalto University School of Science, Espoo, Finland
| | - Nina Lundbom
- HUS Medical Imaging Center, Radiology, Helsinki University Hospital, University of Helsinki, Helsinki, Finland
| | - Carina Sihlbom
- Proteomics Core Facility, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Annika Thorsell
- Proteomics Core Facility, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Haihong Zhou
- Merck Research Laboratories, Merck & Co. Inc., Kenilworth, New Jersey
| | - Kirsi H Pietiläinen
- Endocrinology, Abdominal Center, Helsinki University Hospital, University of Helsinki, Helsinki, Finland
- HUS Medical Imaging Center, Radiology, Helsinki University Hospital, University of Helsinki, Helsinki, Finland
- Obesity Research Unit, Research Program for Clinical and Molecular Metabolism, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Chris Packard
- Institute of Cardiovascular and Medical Sciences, University of Glasgow, Glasgow, UK
| | - Jan Borén
- Department of Molecular and Clinical Medicine, University of Gothenburg, Sahlgrenska University Hospital, Gothenburg, Sweden
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29
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Cansby E, Kulkarni NM, Magnusson E, Kurhe Y, Amrutkar M, Nerstedt A, Ståhlman M, Sihlbom C, Marschall HU, Borén J, Blüher M, Mahlapuu M. Protein kinase MST3 modulates lipid homeostasis in hepatocytes and correlates with nonalcoholic steatohepatitis in humans. FASEB J 2019; 33:9974-9989. [PMID: 31173506 DOI: 10.1096/fj.201900356rr] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Ectopic lipid storage in the liver is considered the main risk factor for nonalcoholic steatohepatitis (NASH). Understanding the molecular networks controlling hepatocellular lipid deposition is therefore essential for developing new strategies to effectively prevent and treat this complex disease. Here, we describe a new regulator of lipid partitioning in human hepatocytes: mammalian sterile 20-like (MST) 3. We found that MST3 protein coats lipid droplets in mouse and human liver cells. Knockdown of MST3 attenuated lipid accumulation in human hepatocytes by stimulating β-oxidation and triacylglycerol secretion while inhibiting fatty acid influx and lipid synthesis. We also observed that lipogenic gene expression and acetyl-coenzyme A carboxylase protein abundance were reduced in MST3-deficient hepatocytes, providing insight into the molecular mechanisms underlying the decreased lipid storage. Furthermore, MST3 expression was positively correlated with key features of NASH (i.e., hepatic lipid content, lobular inflammation, and hepatocellular ballooning) in human liver biopsies. In summary, our results reveal a role of MST3 in controlling the dynamic metabolic balance of liver lipid catabolism vs. lipid anabolism. Our findings highlight MST3 as a potential drug target for the prevention and treatment of NASH and related complex metabolic diseases.-Cansby, E., Kulkarni, N. M., Magnusson, E., Kurhe, Y., Amrutkar, M., Nerstedt, A., Ståhlman, M., Sihlbom, C., Marschall, H.-U., Borén, J., Blüher, M., Mahlapuu, M. Protein kinase MST3 modulates lipid homeostasis in hepatocytes and correlates with nonalcoholic steatohepatitis in humans.
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Affiliation(s)
- Emmelie Cansby
- Department of Chemistry and Molecular Biology, University of Gothenburg and Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Nagaraj M Kulkarni
- Department of Chemistry and Molecular Biology, University of Gothenburg and Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Elin Magnusson
- Department of Chemistry and Molecular Biology, University of Gothenburg and Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Yeshwant Kurhe
- Department of Chemistry and Molecular Biology, University of Gothenburg and Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Manoj Amrutkar
- Department of Hepato-Pancreato-Biliary Surgery, Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - Annika Nerstedt
- Department of Chemistry and Molecular Biology, University of Gothenburg and Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Marcus Ståhlman
- Department of Molecular and Clinical Medicine/Wallenberg Laboratory, Institute of Medicine, University of Gothenburg and Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Carina Sihlbom
- Proteomics Core Facility, University of Gothenburg, Gothenburg, Sweden
| | - Hanns-Ulrich Marschall
- Department of Molecular and Clinical Medicine/Wallenberg Laboratory, Institute of Medicine, University of Gothenburg and Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Jan Borén
- Department of Molecular and Clinical Medicine/Wallenberg Laboratory, Institute of Medicine, University of Gothenburg and Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Matthias Blüher
- Department of Medicine, University of Leipzig, Leipzig, Germany
| | - Margit Mahlapuu
- Department of Chemistry and Molecular Biology, University of Gothenburg and Sahlgrenska University Hospital, Gothenburg, Sweden
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30
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Björnson E, Packard CJ, Adiels M, Andersson L, Matikainen N, Söderlund S, Kahri J, Sihlbom C, Thorsell A, Zhou H, Taskinen MR, Borén J. Investigation of human apoB48 metabolism using a new, integrated non-steady-state model of apoB48 and apoB100 kinetics. J Intern Med 2019; 285:562-577. [PMID: 30779243 PMCID: PMC6849847 DOI: 10.1111/joim.12877] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
BACKGROUND Triglyceride-rich lipoproteins and their remnants have emerged as major risk factors for cardiovascular disease. New experimental approaches are required that permit simultaneous investigation of the dynamics of chylomicrons (CM) and apoB48 metabolism and of apoB100 in very low-density lipoproteins (VLDL). METHODS Mass spectrometric techniques were used to determine the masses and tracer enrichments of apoB48 in the CM, VLDL1 and VLDL2 density intervals. An integrated non-steady-state multicompartmental model was constructed to describe the metabolism of apoB48- and apoB100-containing lipoproteins following a fat-rich meal, as well as during prolonged fasting. RESULTS The kinetic model described the metabolism of apoB48 in CM, VLDL1 and VLDL2 . It predicted a low level of basal apoB48 secretion and, during fat absorption, an increment in apoB48 release into not only CM but also directly into VLDL1 and VLDL2 . ApoB48 particles with a long residence time were present in VLDL, and in subjects with high plasma triglycerides, these lipoproteins contributed to apoB48 measured during fasting conditions. Basal apoB48 secretion was about 50 mg day-1 , and the increment during absorption was about 230 mg day-1 . The fractional catabolic rates for apoB48 in VLDL1 and VLDL2 were substantially lower than for apoB48 in CM. DISCUSSION This novel non-steady-state model integrates the metabolic properties of both apoB100 and apoB48 and the kinetics of triglyceride. The model is physiologically relevant and provides insight not only into apoB48 release in the basal and postabsorptive states but also into the contribution of the intestine to VLDL pool size and kinetics.
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Affiliation(s)
- E Björnson
- Department of Molecular and Clinical Medicine, University of Gothenburg and Sahlgrenska University Hospital, Gothenburg, Sweden
| | - C J Packard
- Institute of Cardiovascular and Medical Sciences, University of Glasgow, Glasgow, UK
| | - M Adiels
- Department of Molecular and Clinical Medicine, University of Gothenburg and Sahlgrenska University Hospital, Gothenburg, Sweden
| | - L Andersson
- Department of Molecular and Clinical Medicine, University of Gothenburg and Sahlgrenska University Hospital, Gothenburg, Sweden
| | - N Matikainen
- Research Programs Unit, Diabetes and Obesity, University of Helsinki, Helsinki, Finland.,Department of Internal Medicine, Helsinki University Hospital, Helsinki, Finland.,Endocrinology, Abdominal Center, Helsinki University Hospital, Helsinki, Finland
| | - S Söderlund
- Research Programs Unit, Diabetes and Obesity, University of Helsinki, Helsinki, Finland.,Department of Internal Medicine, Helsinki University Hospital, Helsinki, Finland
| | - J Kahri
- Research Programs Unit, Diabetes and Obesity, University of Helsinki, Helsinki, Finland.,Department of Internal Medicine, Helsinki University Hospital, Helsinki, Finland
| | - C Sihlbom
- Proteomics Facility, University of Gothenburg, Gothenburg, Sweden
| | - A Thorsell
- Proteomics Facility, University of Gothenburg, Gothenburg, Sweden
| | - H Zhou
- Merck Research Laboratories, Merck & Co. Inc., Kenilworth, NJ, USA
| | - M-R Taskinen
- Research Programs Unit, Diabetes and Obesity, University of Helsinki, Helsinki, Finland.,Department of Internal Medicine, Helsinki University Hospital, Helsinki, Finland
| | - J Borén
- Department of Molecular and Clinical Medicine, University of Gothenburg and Sahlgrenska University Hospital, Gothenburg, Sweden
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31
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Fornes R, Manti M, Qi X, Vorontsov E, Sihlbom C, Nyström J, Jerlhag E, Maliqueo M, Hirschberg AL, Carlström M, Benrick A, Stener-Victorin E. Mice exposed to maternal androgen excess and diet-induced obesity have altered phosphorylation of catechol-O-methyltransferase in the placenta and fetal liver. Int J Obes (Lond) 2019; 43:2176-2188. [PMID: 30670847 DOI: 10.1038/s41366-018-0314-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/15/2018] [Revised: 11/19/2018] [Accepted: 12/19/2018] [Indexed: 01/01/2023]
Abstract
BACKGROUND/OBJECTIVES Maternal obesity together with androgen excess in mice negatively affects placental function and maternal and fetal liver function as demonstrated by increased triglyceride content with dysfunctional expression of enzymes and transcription factors involved in de novo lipogenesis and fat storage. To identify changes in molecular pathways that might promote diseases in adulthood, we performed a global proteomic analysis using a liquid-chromatography/mass-spectrometry system to investigate total and phosphorylated proteins in the placenta and fetal liver in a mouse model that combines maternal obesity with maternal androgen excess. METHODS After ten weeks on a control diet (CD) or high fat/high sugar-diet, dams were mated with males fed the CD. Between gestational day (GD) 16.5 and GD 18.5, mice were injected with vehicle or dihydrotestosterone (DHT) and sacrificed at GD 18.5 prior to dissection of the placentas and fetal livers. Four pools of female placentas and fetal livers were subjected to a global proteomic analysis. Total and phosphorylated proteins were filtered by ANOVA q < 0.05, and this was followed by two-way ANOVA to determine the effect of maternal obesity and/or androgen exposure. RESULTS In placenta, phosphorylated ATP-citrate synthase was decreased due to maternal obesity, and phosphorylated catechol-O-methyltransferase (COMT) was differentially expressed due to the interaction between maternal diet and DHT exposure. In fetal liver, five total proteins and 48 proteins phosphorylated in one or more sites, were differentially expressed due to maternal obesity or androgen excess. In fetal liver, phosphorylated COMT expression was higher in fetus exposed to maternal obesity. CONCLUSION These results suggest a common regulatory mechanism of catecholamine metabolism in the placenta and the fetal liver as demonstrated by higher phosphorylated COMT expression in the placenta and fetal liver from animals exposed to diet-induced maternal obesity and lower expression of phosphorylated COMT in animals exposed to maternal androgen excess.
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Affiliation(s)
- Romina Fornes
- Department of Physiology and Pharmacology, Karolinska Institutet, Solna, Sweden
| | - Maria Manti
- Department of Physiology and Pharmacology, Karolinska Institutet, Solna, Sweden
| | - Xiaojuan Qi
- Department of Physiology, Qiqihar Medical University, Qiqihar, China
| | - Egor Vorontsov
- Proteomics Core Facility, University of Gothenburg, Gothenburg, Sweden
| | - Carina Sihlbom
- Proteomics Core Facility, University of Gothenburg, Gothenburg, Sweden
| | - Jenny Nyström
- Department of Physiology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Elisabet Jerlhag
- Department of Pharmacology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Manuel Maliqueo
- Endocrinology and Metabolism, Faculty of Medicine, West division, University of Chile, Santiago, Chile
| | | | - Mattias Carlström
- Department of Physiology and Pharmacology, Karolinska Institutet, Solna, Sweden
| | - Anna Benrick
- Department of Physiology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.,School of Health and Education, University of Skövde, Skövde, Sweden
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32
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Pett C, Nasir W, Sihlbom C, Olsson BM, Caixeta V, Schorlemer M, Zahedi RP, Larson G, Nilsson J, Westerlind U. Effective Assignment of α2,3/α2,6-Sialic Acid Isomers by LC-MS/MS-Based Glycoproteomics. Angew Chem Int Ed Engl 2018; 57:9320-9324. [PMID: 29742324 DOI: 10.1002/anie.201803540] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [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: 03/23/2018] [Revised: 05/08/2018] [Indexed: 11/07/2022]
Abstract
Distinct structural changes of the α2,3/α2,6-sialic acid glycosidic linkages on glycoproteins are of importance in cancer biology, inflammatory diseases, and virus tropism. Current glycoproteomic methodologies are, however, not amenable toward high-throughput characterization of sialic acid isomers. To enable such assignments, a mass spectrometry method utilizing synthetic model glycopeptides for the analysis of oxonium ion intensity ratios was developed. This method was successfully applied in large-scale glycoproteomics, thus allowing the site-specific structural characterization of sialic acid isomers.
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Affiliation(s)
- Christian Pett
- Leibniz-Institut für Analytische Wissenschaften-ISAS-e.V., 44227, Dortmund, Germany.,Department of Chemistry, Umeå University, 90187, Umeå, Sweden
| | - Waqas Nasir
- Department of Clinical Chemistry and Transfusion Medicine, Institute of Biomedicine, University of Gothenburg, Gothenburg, Sweden.,Thermo Fischer Scientific, Bremen, Germany
| | - Carina Sihlbom
- Proteomics Core Facility, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Britt-Marie Olsson
- Proteomics Core Facility, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Vanessa Caixeta
- Leibniz-Institut für Analytische Wissenschaften-ISAS-e.V., 44227, Dortmund, Germany
| | - Manuel Schorlemer
- Leibniz-Institut für Analytische Wissenschaften-ISAS-e.V., 44227, Dortmund, Germany.,Department of Chemistry, Umeå University, 90187, Umeå, Sweden
| | - René P Zahedi
- Leibniz-Institut für Analytische Wissenschaften-ISAS-e.V., 44227, Dortmund, Germany.,Segal Cancer Proteomics Centre, Lady Davis Institute, Jewish General Hospital, McGill University, Montreal, Quebec, Canada
| | - Göran Larson
- Department of Clinical Chemistry and Transfusion Medicine, Institute of Biomedicine, University of Gothenburg, Gothenburg, Sweden
| | - Jonas Nilsson
- Department of Clinical Chemistry and Transfusion Medicine, Institute of Biomedicine, University of Gothenburg, Gothenburg, Sweden
| | - Ulrika Westerlind
- Leibniz-Institut für Analytische Wissenschaften-ISAS-e.V., 44227, Dortmund, Germany.,Department of Chemistry, Umeå University, 90187, Umeå, Sweden
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33
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Pett C, Nasir W, Sihlbom C, Olsson BM, Caixeta V, Schorlemer M, Zahedi RP, Larson G, Nilsson J, Westerlind U. Effective Assignment of α2,3/α2,6-Sialic Acid Isomers by LC-MS/MS-Based Glycoproteomics. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201803540] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Christian Pett
- Leibniz-Institut für Analytische Wissenschaften-ISAS-e.V.; 44227 Dortmund Germany
- Department of Chemistry; Umeå University; 90187 Umeå Sweden
| | - Waqas Nasir
- Department of Clinical Chemistry and Transfusion Medicine, Institute of Biomedicine; University of Gothenburg; Gothenburg Sweden
- Thermo Fischer Scientific; Bremen Germany
| | - Carina Sihlbom
- Proteomics Core Facility, Sahlgrenska Academy; University of Gothenburg; Gothenburg Sweden
| | - Britt-Marie Olsson
- Proteomics Core Facility, Sahlgrenska Academy; University of Gothenburg; Gothenburg Sweden
| | - Vanessa Caixeta
- Leibniz-Institut für Analytische Wissenschaften-ISAS-e.V.; 44227 Dortmund Germany
| | - Manuel Schorlemer
- Leibniz-Institut für Analytische Wissenschaften-ISAS-e.V.; 44227 Dortmund Germany
- Department of Chemistry; Umeå University; 90187 Umeå Sweden
| | - René P. Zahedi
- Leibniz-Institut für Analytische Wissenschaften-ISAS-e.V.; 44227 Dortmund Germany
- Segal Cancer Proteomics Centre, Lady Davis Institute; Jewish General Hospital; McGill University; Montreal Quebec Canada
| | - Göran Larson
- Department of Clinical Chemistry and Transfusion Medicine, Institute of Biomedicine; University of Gothenburg; Gothenburg Sweden
| | - Jonas Nilsson
- Department of Clinical Chemistry and Transfusion Medicine, Institute of Biomedicine; University of Gothenburg; Gothenburg Sweden
| | - Ulrika Westerlind
- Leibniz-Institut für Analytische Wissenschaften-ISAS-e.V.; 44227 Dortmund Germany
- Department of Chemistry; Umeå University; 90187 Umeå Sweden
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34
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Mirgorodskaya E, Karlsson NG, Sihlbom C, Larson G, Nilsson CL. Cracking the Sugar Code by Mass Spectrometry : An Invited Perspective in Honor of Dr. Catherine E. Costello, Recipient of the 2017 ASMS Distinguished Contribution Award. J Am Soc Mass Spectrom 2018; 29:1065-1074. [PMID: 29644549 PMCID: PMC6003999 DOI: 10.1007/s13361-018-1912-3] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/30/2017] [Revised: 02/06/2018] [Accepted: 02/07/2018] [Indexed: 06/08/2023]
Abstract
The structural study of glycans and glycoconjugates is essential to assign their roles in homeostasis, health, and disease. Once dominated by nuclear magnetic resonance spectroscopy, mass spectrometric methods have become the preferred toolbox for the determination of glycan structures at high sensitivity. The patterns of such structures in different cellular states now allow us to interpret the sugar codes in health and disease, based on structure-function relationships. Dr. Catherine E. Costello was the 2017 recipient of the American Society for Mass Spectrometry's Distinguished Contribution Award. In this Perspective article, we describe her seminal work in a historical and geographical context and review the impact of her research accomplishments in the field.8 ᅟ Graphical abstract.
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Affiliation(s)
- Ekaterina Mirgorodskaya
- Proteomics Core Facility, University of Gothenburg, Sahlgrenska Academy, Box 413, SE-405 30, Gothenburg, Sweden
| | - Niclas G Karlsson
- Department of Medical Biochemistry, University of Gothenburg, Sahlgrenska Academy, Box 440, SE-405 30, Gothenburg, Sweden
| | - Carina Sihlbom
- Proteomics Core Facility, University of Gothenburg, Sahlgrenska Academy, Box 413, SE-405 30, Gothenburg, Sweden
| | - Göran Larson
- Department of Clinical Chemistry and Transfusion Medicine, University of Gothenburg, Sahlgrenska Academy, Institute of Biomedicine, SE-413 45, Gothenburg, Sweden
| | - Carol L Nilsson
- Department of Experimental Medical Science, Lund University, SE-223 62, Lund, Sweden.
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35
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Pandit S, Ravikumar V, Abdel-Haleem AM, Derouiche A, Mokkapati VRSS, Sihlbom C, Mineta K, Gojobori T, Gao X, Westerlund F, Mijakovic I. Low Concentrations of Vitamin C Reduce the Synthesis of Extracellular Polymers and Destabilize Bacterial Biofilms. Front Microbiol 2017; 8:2599. [PMID: 29317857 PMCID: PMC5748153 DOI: 10.3389/fmicb.2017.02599] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [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: 10/15/2017] [Accepted: 12/13/2017] [Indexed: 11/13/2022] Open
Abstract
Extracellular polymeric substances (EPS) produced by bacteria form a matrix supporting the complex three-dimensional architecture of biofilms. This EPS matrix is primarily composed of polysaccharides, proteins and extracellular DNA. In addition to supporting the community structure, the EPS matrix protects bacterial biofilms from the environment. Specifically, it shields the bacterial cells inside the biofilm, by preventing antimicrobial agents from getting in contact with them, thereby reducing their killing effect. New strategies for disrupting the formation of the EPS matrix can therefore lead to a more efficient use of existing antimicrobials. Here we examined the mechanism of the known effect of vitamin C (sodium ascorbate) on enhancing the activity of various antibacterial agents. Our quantitative proteomics analysis shows that non-lethal concentrations of vitamin C inhibit bacterial quorum sensing and other regulatory mechanisms underpinning biofilm development. As a result, the EPS biosynthesis in reduced, and especially the polysaccharide component of the matrix is depleted. Once the EPS content is reduced beyond a critical point, bacterial cells get fully exposed to the medium. At this stage, the cells are more susceptible to killing, either by vitamin C-induced oxidative stress as reported here, or by other antimicrobials or treatments.
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Affiliation(s)
- Santosh Pandit
- Systems and Synthetic Biology Division, Department of Biology and Biological Engineering, Chalmers University of Technology, Gothenburg, Sweden
| | - Vaishnavi Ravikumar
- Systems and Synthetic Biology Division, Department of Biology and Biological Engineering, Chalmers University of Technology, Gothenburg, Sweden
| | - Alyaa M Abdel-Haleem
- Computational Bioscience Research Center, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia.,Biological and Environmental Sciences and Engineering Division, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
| | - Abderahmane Derouiche
- Systems and Synthetic Biology Division, Department of Biology and Biological Engineering, Chalmers University of Technology, Gothenburg, Sweden
| | - V R S S Mokkapati
- Systems and Synthetic Biology Division, Department of Biology and Biological Engineering, Chalmers University of Technology, Gothenburg, Sweden
| | - Carina Sihlbom
- Proteomics Core Facility, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Katsuhiko Mineta
- Computational Bioscience Research Center, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
| | - Takashi Gojobori
- Computational Bioscience Research Center, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
| | - Xin Gao
- Computational Bioscience Research Center, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
| | - Fredrik Westerlund
- Systems and Synthetic Biology Division, Department of Biology and Biological Engineering, Chalmers University of Technology, Gothenburg, Sweden
| | - Ivan Mijakovic
- Systems and Synthetic Biology Division, Department of Biology and Biological Engineering, Chalmers University of Technology, Gothenburg, Sweden.,Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, Kongens Lyngby, Denmark
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Buvall L, Hedman H, Khramova A, Najar D, Bergwall L, Ebefors K, Sihlbom C, Lundstam S, Herrmann A, Wallentin H, Roos E, Nilsson UA, Johansson M, Törnell J, Haraldsson B, Nyström J. Orellanine specifically targets renal clear cell carcinoma. Oncotarget 2017; 8:91085-91098. [PMID: 29207627 PMCID: PMC5710908 DOI: 10.18632/oncotarget.19555] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2017] [Accepted: 07/11/2017] [Indexed: 11/25/2022] Open
Abstract
Renal cell carcinoma (RCC), arising from the proximal tubule in the kidney, accounts for approximately 85% of kidney cancers and causes over 140,000 annual deaths worldwide. In the last decade, several new therapies have been identified for treatment of metastatic RCC. Although these therapies increase survival time compared to standard care, none of them has curative properties. The nephrotoxin orellanine specifically targets proximal tubular epithelial cells, leaving other organs unaffected. We therefore hypothesized that the selective toxicity of orellanine extends to clear cell RCC (ccRCC) cells since they emanate from proximal tubular cells. Orellanine would thus target both primary and metastatic ccRCC in vitro and in vivo. We found that orellanine induces dose-dependent cell death in proximal tubular cells and in all ccRCC cells tested, both primary and cell lines, with no toxicity detected in control cells. The toxic action of orellanine involve decreased protein synthesis, disrupted cell metabolism and induction of apoptosis. In nude rats carrying human ccRCC xenografts, brief orellanine treatment eliminated more than 90% of viable tumor mass compared to control rats. This identifies orellanine as a potential treatment concept for ccRCC patients on dialysis, due to its unique selective toxicity towards ccRCC.
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Affiliation(s)
- Lisa Buvall
- Institute of Neuroscience and Physiology, Gothenburg, Sweden
| | | | - Alina Khramova
- Institute of Neuroscience and Physiology, Gothenburg, Sweden
| | - Deman Najar
- Institute of Neuroscience and Physiology, Gothenburg, Sweden
| | - Lovisa Bergwall
- Institute of Neuroscience and Physiology, Gothenburg, Sweden
| | - Kerstin Ebefors
- Institute of Neuroscience and Physiology, Gothenburg, Sweden
| | - Carina Sihlbom
- Proteomics Core Facility at Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Sven Lundstam
- Institute of Clinical Sciences at University of Gothenburg, Gothenburg, Sweden
| | | | - Hanna Wallentin
- Institute of Neuroscience and Physiology, Gothenburg, Sweden
| | - Emelie Roos
- Institute of Neuroscience and Physiology, Gothenburg, Sweden
| | | | - Martin Johansson
- Department of Laboratory Medicine, Pathology, Lund University, Malmö, Sweden
| | - Jan Törnell
- Institute of Neuroscience and Physiology, Gothenburg, Sweden
| | | | - Jenny Nyström
- Institute of Neuroscience and Physiology, Gothenburg, Sweden
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37
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Liu P, Lassén E, Nair V, Berthier CC, Suguro M, Sihlbom C, Kretzler M, Betsholtz C, Haraldsson B, Ju W, Ebefors K, Nyström J. Transcriptomic and Proteomic Profiling Provides Insight into Mesangial Cell Function in IgA Nephropathy. J Am Soc Nephrol 2017. [PMID: 28646076 DOI: 10.1681/asn.2016101103] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
IgA nephropathy (IgAN), the most common GN worldwide, is characterized by circulating galactose-deficient IgA (gd-IgA) that forms immune complexes. The immune complexes are deposited in the glomerular mesangium, leading to inflammation and loss of renal function, but the complete pathophysiology of the disease is not understood. Using an integrated global transcriptomic and proteomic profiling approach, we investigated the role of the mesangium in the onset and progression of IgAN. Global gene expression was investigated by microarray analysis of the glomerular compartment of renal biopsy specimens from patients with IgAN (n=19) and controls (n=22). Using curated glomerular cell type-specific genes from the published literature, we found differential expression of a much higher percentage of mesangial cell-positive standard genes than podocyte-positive standard genes in IgAN. Principal coordinate analysis of expression data revealed clear separation of patient and control samples on the basis of mesangial but not podocyte cell-positive standard genes. Additionally, patient clinical parameters (serum creatinine values and eGFRs) significantly correlated with Z scores derived from the expression profile of mesangial cell-positive standard genes. Among patients grouped according to Oxford MEST score, patients with segmental glomerulosclerosis had a significantly higher mesangial cell-positive standard gene Z score than patients without segmental glomerulosclerosis. By investigating mesangial cell proteomics and glomerular transcriptomics, we identified 22 common pathways induced in mesangial cells by gd-IgA, most of which mediate inflammation. The genes, proteins, and corresponding pathways identified provide novel insights into the pathophysiologic mechanisms leading to IgAN.
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Affiliation(s)
- Peidi Liu
- Department of Physiology, Institute of Neuroscience and Physiology
| | - Emelie Lassén
- Department of Physiology, Institute of Neuroscience and Physiology
| | - Viji Nair
- Division of Nephrology, Department of Internal Medicine and Department of Computational Medicine and Bioinformatics, University of Michigan, Ann Arbor, Michigan
| | - Celine C Berthier
- Division of Nephrology, Department of Internal Medicine and Department of Computational Medicine and Bioinformatics, University of Michigan, Ann Arbor, Michigan
| | - Miyuki Suguro
- Division of Molecular Medicine, Aichi Cancer Center Research Institute, Nagoya, Japan
| | - Carina Sihlbom
- Proteomics Core Facility at University of Gothenburg, University of Gothenburg, Gothenburg, Sweden
| | - Matthias Kretzler
- Division of Nephrology, Department of Internal Medicine and Department of Computational Medicine and Bioinformatics, University of Michigan, Ann Arbor, Michigan
| | - Christer Betsholtz
- Department of Immunology, Genetics and Pathology, Uppsala University, Uppsala, Sweden; and.,Integrated Cardio Metabolic Centre, Karolinska Institutet Novum, Huddinge, Sweden
| | - Börje Haraldsson
- Department of Physiology, Institute of Neuroscience and Physiology
| | - Wenjun Ju
- Division of Nephrology, Department of Internal Medicine and Department of Computational Medicine and Bioinformatics, University of Michigan, Ann Arbor, Michigan
| | - Kerstin Ebefors
- Department of Physiology, Institute of Neuroscience and Physiology
| | - Jenny Nyström
- Department of Physiology, Institute of Neuroscience and Physiology,
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38
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Oras J, Redfors B, Ali A, Lundgren J, Sihlbom C, Thorsell A, Seeman-Lodding H, Omerovic E, Ricksten SE. Anaesthetic-induced cardioprotection in an experimental model of the Takotsubo syndrome - isoflurane vs. propofol. Acta Anaesthesiol Scand 2017; 61:309-321. [PMID: 28111740 DOI: 10.1111/aas.12857] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2016] [Revised: 12/20/2016] [Accepted: 12/22/2016] [Indexed: 12/30/2022]
Abstract
BACKGROUND Takotsubo syndrome (TS) is an acute cardiac condition with a substantial mortality for which no specific treatment is available. We have previously shown that isoflurane attenuates the development of left ventricular (LV) dysfunction in an experimental TS-model. We compared the effects of equi-anaesthetic doses of isoflurane, propofol and ketamine+midazolam on haemodynamics, global and regional LV systolic function and the activation of intracellular metabolic pathways in experimental TS. We hypothesized that cardioprotection in experimental TS is specific for isoflurane. METHODS Forty-five rats were randomized to isoflurane (0.6 MAC, n = 15), propofol (bolus 200 mg/kg+360 mg/kg/h, n = 15) or ketamine (100 mg/kg)+midazolam (10 mg/kg, n = 15) anaesthesia. Arterial pressure, heart rate and body temperature were continuously measured and arterial blood gas analysis was performed intermittently. TS was induced by intraperitoneal injection of isoprenaline, 50 mg/kg. LV echocardiography was performed 90 min after isoprenaline injection. Apical cardiac tissue was analysed by global discovery proteomics and pathway analysis. RESULTS Isoprenaline-induced changes in arterial blood pressure, heart rate or body temperature did not differ between groups. LV ejection fraction was higher and extent of LV akinesia was lower with isoflurane, when compared with the propofol and the ketamine+midazolam groups. In this TS-model, the proteomic analysis revealed an up-regulation of pathways involved in inflammation, coagulation, endocytosis and lipid metabolism. This up-regulation was clearly attenuated with isoflurane compared to propofol. CONCLUSION In an experimental model of TS, isoflurane, but not propofol, exerts a cardioprotective effect. The proteomic analysis suggests that inflammation might be involved in pathogenesis of TS.
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Affiliation(s)
- J. Oras
- The Department of Anaesthesiology and Intensive Care Medicine; Institute of Clinical Sciences; Sahlgrenska Academy; University of Gothenburg; Gothenburg Sweden
| | - B. Redfors
- Department of Molecular and Clinical Medicine; Wallenberg Laboratory; Institute of Medicine; Sahlgrenska Academy; University of Gothenburg; Gothenburg Sweden
- Department of Cardiology; Institute of Medicine; Sahlgrenska Academy; University of Gothenburg; Gothenburg Sweden
| | - A. Ali
- Department of Molecular and Clinical Medicine; Wallenberg Laboratory; Institute of Medicine; Sahlgrenska Academy; University of Gothenburg; Gothenburg Sweden
- Department of Cardiology; Institute of Medicine; Sahlgrenska Academy; University of Gothenburg; Gothenburg Sweden
| | - J. Lundgren
- Department of Molecular and Clinical Medicine; Wallenberg Laboratory; Institute of Medicine; Sahlgrenska Academy; University of Gothenburg; Gothenburg Sweden
- Department of Cardiology; Institute of Medicine; Sahlgrenska Academy; University of Gothenburg; Gothenburg Sweden
| | - C. Sihlbom
- Proteomics Core Facility; Sahlgrenska Academy; University of Gothenburg; Gothenburg Sweden
| | - A. Thorsell
- Proteomics Core Facility; Sahlgrenska Academy; University of Gothenburg; Gothenburg Sweden
| | - H. Seeman-Lodding
- The Department of Anaesthesiology and Intensive Care Medicine; Institute of Clinical Sciences; Sahlgrenska Academy; University of Gothenburg; Gothenburg Sweden
| | - E. Omerovic
- Department of Molecular and Clinical Medicine; Wallenberg Laboratory; Institute of Medicine; Sahlgrenska Academy; University of Gothenburg; Gothenburg Sweden
- Department of Cardiology; Institute of Medicine; Sahlgrenska Academy; University of Gothenburg; Gothenburg Sweden
| | - S.-E. Ricksten
- The Department of Anaesthesiology and Intensive Care Medicine; Institute of Clinical Sciences; Sahlgrenska Academy; University of Gothenburg; Gothenburg Sweden
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39
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Chursa U, Nuñez-Durán E, Cansby E, Amrutkar M, Sütt S, Ståhlman M, Olsson BM, Borén J, Johansson ME, Bäckhed F, Johansson BR, Sihlbom C, Mahlapuu M. Overexpression of protein kinase STK25 in mice exacerbates ectopic lipid accumulation, mitochondrial dysfunction and insulin resistance in skeletal muscle. Diabetologia 2017; 60:553-567. [PMID: 27981357 PMCID: PMC6518105 DOI: 10.1007/s00125-016-4171-5] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/25/2016] [Accepted: 11/14/2016] [Indexed: 12/11/2022]
Abstract
AIMS/HYPOTHESIS Understanding the molecular networks controlling ectopic lipid deposition and insulin responsiveness in skeletal muscle is essential for developing new strategies to treat type 2 diabetes. We recently identified serine/threonine protein kinase 25 (STK25) as a critical regulator of liver steatosis, hepatic lipid metabolism and whole body glucose and insulin homeostasis. Here, we assessed the role of STK25 in control of ectopic fat storage and insulin responsiveness in skeletal muscle. METHODS Skeletal muscle morphology was studied by histological examination, exercise performance and insulin sensitivity were assessed by treadmill running and euglycaemic-hyperinsulinaemic clamp, respectively, and muscle lipid metabolism was analysed by ex vivo assays in Stk25 transgenic and wild-type mice fed a high-fat diet. Lipid accumulation and mitochondrial function were also studied in rodent myoblasts overexpressing STK25. Global quantitative phosphoproteomics was performed in skeletal muscle of Stk25 transgenic and wild-type mice fed a high-fat diet to identify potential downstream mediators of STK25 action. RESULTS We found that overexpression of STK25 in transgenic mice fed a high-fat diet increases intramyocellular lipid accumulation, impairs skeletal muscle mitochondrial function and sarcomeric ultrastructure, and induces perimysial and endomysial fibrosis, thereby reducing endurance exercise capacity and muscle insulin sensitivity. Furthermore, we observed enhanced lipid accumulation and impaired mitochondrial function in rodent myoblasts overexpressing STK25, demonstrating an autonomous action for STK25 within cells. Global phosphoproteomic analysis revealed alterations in the total abundance and phosphorylation status of different target proteins located predominantly to mitochondria and sarcomeric contractile elements in Stk25 transgenic vs wild-type muscle, respectively, providing a possible molecular mechanism for the observed phenotype. CONCLUSIONS/INTERPRETATION STK25 emerges as a new regulator of the complex interplay between lipid storage, mitochondrial energetics and insulin action in skeletal muscle, highlighting the potential of STK25 antagonists for type 2 diabetes treatment.
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Affiliation(s)
- Urszula Chursa
- Lundberg Laboratory for Diabetes Research, Department of Molecular and Clinical Medicine, University of Gothenburg, Sahlgrenska University Hospital, Blå stråket 5, SE-41345, Gothenburg, Sweden
| | - Esther Nuñez-Durán
- Lundberg Laboratory for Diabetes Research, Department of Molecular and Clinical Medicine, University of Gothenburg, Sahlgrenska University Hospital, Blå stråket 5, SE-41345, Gothenburg, Sweden
| | - Emmelie Cansby
- Lundberg Laboratory for Diabetes Research, Department of Molecular and Clinical Medicine, University of Gothenburg, Sahlgrenska University Hospital, Blå stråket 5, SE-41345, Gothenburg, Sweden
| | - Manoj Amrutkar
- Lundberg Laboratory for Diabetes Research, Department of Molecular and Clinical Medicine, University of Gothenburg, Sahlgrenska University Hospital, Blå stråket 5, SE-41345, Gothenburg, Sweden
| | - Silva Sütt
- Lundberg Laboratory for Diabetes Research, Department of Molecular and Clinical Medicine, University of Gothenburg, Sahlgrenska University Hospital, Blå stråket 5, SE-41345, Gothenburg, Sweden
| | - Marcus Ståhlman
- Wallenberg Laboratory, Department of Molecular and Clinical Medicine, University of Gothenburg, Sahlgrenska University Hospital, Gothenburg, Sweden
| | | | - Jan Borén
- Wallenberg Laboratory, Department of Molecular and Clinical Medicine, University of Gothenburg, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Maria E Johansson
- Department of Physiology, Institute of Neuroscience and Physiology, University of Gothenburg, Gothenburg, Sweden
| | - Fredrik Bäckhed
- Wallenberg Laboratory, Department of Molecular and Clinical Medicine, University of Gothenburg, Sahlgrenska University Hospital, Gothenburg, Sweden
- Novo Nordisk Foundation Center for Basic Metabolic Research, University of Copenhagen, Copenhagen, Denmark
| | - Bengt R Johansson
- Institute of Biomedicine, Electron Microscopy Unit, University of Gothenburg, Gothenburg, Sweden
| | - Carina Sihlbom
- Proteomics Core Facility, University of Gothenburg, Gothenburg, Sweden
| | - Margit Mahlapuu
- Lundberg Laboratory for Diabetes Research, Department of Molecular and Clinical Medicine, University of Gothenburg, Sahlgrenska University Hospital, Blå stråket 5, SE-41345, Gothenburg, Sweden.
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40
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Skiöldebrand E, Ekman S, Mattsson Hultén L, Svala E, Björkman K, Lindahl A, Lundqvist A, Önnerfjord P, Sihlbom C, Rüetschi U. Cartilage oligomeric matrix protein neoepitope in the synovial fluid of horses with acute lameness: A new biomarker for the early stages of osteoarthritis. Equine Vet J 2017; 49:662-667. [PMID: 28097685 PMCID: PMC5573946 DOI: 10.1111/evj.12666] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [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: 06/16/2016] [Revised: 12/19/2016] [Accepted: 01/04/2017] [Indexed: 12/23/2022]
Abstract
Background Clinical tools to diagnose the early changes of osteoarthritis (OA) that occur in the articular cartilage are lacking. Objectives We sought to identify and quantify a novel cartilage oligomeric matrix protein (COMP) neoepitope in the synovial fluid from the joints of healthy horses and those with different stages of OA. Study design In vitro quantitative proteomics and assay development with application in synovial fluids samples obtained from biobanks of well‐characterised horses. Methods Articular cartilage explants were incubated with or without interleukin‐1β for 25 days. Media were analysed via quantitative proteomics. Synovial fluid was obtained from either normal joints (n = 15) or joints causing lameness (n = 17) or with structural OA lesions (n = 7) and analysed for concentrations of the COMP neoepitope using a custom‐developed inhibition enzyme‐linked immunosorbent assay (ELISA). Explants were immunostained with polyclonal antibodies against COMP and the COMP neoepitopes. Results Semitryptic COMP peptides were identified and quantified in cell culture media from cartilage explants. A rabbit polyclonal antibody was raised against the neoepitope of the N‐terminal portion of one COMP fragment (sequence SGPTHEGVC). An inhibition ELISA was developed to quantify the COMP neoepitope in synovial fluid. The mean concentration of the COMP neoepitope significantly increased in the synovial fluid from the joints responsible for acute lameness compared with normal joints and the joints of chronically lame horses and in joints with chronic structural OA. Immunolabelling for the COMP neoepitope revealed a pericellular staining in the interleukin‐1β‐stimulated explants. Main limitations The ELISA is based on polyclonal antisera rather than a monoclonal antibody. Conclusions The increase in the COMP neoepitope in the synovial fluid from horses with acute lameness suggests that this neoepitope has the potential to be a unique candidate biomarker for the early molecular changes in articular cartilage associated with OA.
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Affiliation(s)
- E Skiöldebrand
- Department of Clinical Chemistry and Transfusion Medicine, Institute of Biomedicine, Sahlgrenska University Hospital, Gothenburg University, Gothenburg, Sweden.,Division of Pathology, Pharmacology and Toxicology, Department of Biomedical Sciences and Veterinary Public Health, Swedish University of Agricultural Sciences, Uppsala, Sweden
| | - S Ekman
- Division of Pathology, Pharmacology and Toxicology, Department of Biomedical Sciences and Veterinary Public Health, Swedish University of Agricultural Sciences, Uppsala, Sweden
| | - L Mattsson Hultén
- Department of Clinical Chemistry, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - E Svala
- Department of Clinical Chemistry and Transfusion Medicine, Institute of Biomedicine, Sahlgrenska University Hospital, Gothenburg University, Gothenburg, Sweden.,Division of Pathology, Pharmacology and Toxicology, Department of Biomedical Sciences and Veterinary Public Health, Swedish University of Agricultural Sciences, Uppsala, Sweden
| | - K Björkman
- Department of Clinical Chemistry, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - A Lindahl
- Department of Clinical Chemistry and Transfusion Medicine, Institute of Biomedicine, Sahlgrenska University Hospital, Gothenburg University, Gothenburg, Sweden
| | - A Lundqvist
- Department of Clinical Chemistry, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - P Önnerfjord
- Section for Rheumatology and Molecular Skeletal Biology, Department of Clinical Sciences Lund, Lund University, Lund, Sweden
| | - C Sihlbom
- Proteomics Core Facility, Sahlgrenska Academy, Gothenburg University, Gothenburg, Sweden
| | - U Rüetschi
- Department of Clinical Chemistry and Transfusion Medicine, Institute of Biomedicine, Sahlgrenska University Hospital, Gothenburg University, Gothenburg, Sweden
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41
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Nilsson J, Noborn F, Gomez Toledo A, Nasir W, Sihlbom C, Larson G. Characterization of Glycan Structures of Chondroitin Sulfate-Glycopeptides Facilitated by Sodium Ion-Pairing and Positive Mode LC-MS/MS. J Am Soc Mass Spectrom 2017; 28:229-241. [PMID: 27873218 PMCID: PMC5227003 DOI: 10.1007/s13361-016-1539-1] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/01/2016] [Revised: 10/13/2016] [Accepted: 10/20/2016] [Indexed: 06/06/2023]
Abstract
Purification and liquid chromatography-tandem mass spectrometry (LC-MS/MS) characterization of glycopeptides, originating from protease digests of glycoproteins, enables site-specific analysis of protein N- and O-glycosylations. We have described a protocol to enrich, hydrolyze by chondroitinase ABC, and characterize chondroitin sulfate-containing glycopeptides (CS-glycopeptides) using positive mode LC-MS/MS. The CS-glycopeptides, originating from the Bikunin proteoglycan of human urine samples, had ΔHexAGalNAcGlcAGalGalXyl-O-Ser hexasaccharide structure and were further substituted with 0-3 sulfate and 0-1 phosphate groups. However, it was not possible to exactly pinpoint sulfate attachment residues, for protonated precursors, due to extensive fragmentation of sulfate groups using high-energy collision induced dissociation (HCD). To circumvent the well-recognized sulfate instability, we now introduced Na+ ions to form sodiated precursors, which protected sulfate groups from decomposition and facilitated the assignment of sulfate modifications. Sulfate groups were pinpointed to both Gal residues and to the GalNAc of the hexasaccharide structure. The intensities of protonated and sodiated saccharide oxonium ions were very prominent in the HCD-MS2 spectra, which provided complementary structural analysis of sulfate substituents of CS-glycopeptides. We have demonstrated a considerable heterogeneity of the bikunin CS linkage region. The realization of these structural variants should be beneficial in studies aimed at investigating the importance of the CS linkage region with regards to the biosynthesis of CS and potential interactions to CS binding proteins. Also, the combined use of protonated and sodiated precursors for positive mode HCD fragmentation analysis will likely become useful for additional classes of sulfated glycopeptides. Graphical Abstract ᅟ.
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Affiliation(s)
- Jonas Nilsson
- Department of Clinical Chemistry and Transfusion Medicine, Institute of Biomedicine, Sahlgrenska Academy at the University of Gothenburg, Gothenburg, Sweden
| | - Fredrik Noborn
- Department of Clinical Chemistry and Transfusion Medicine, Institute of Biomedicine, Sahlgrenska Academy at the University of Gothenburg, Gothenburg, Sweden
| | - Alejandro Gomez Toledo
- Department of Clinical Chemistry and Transfusion Medicine, Institute of Biomedicine, Sahlgrenska Academy at the University of Gothenburg, Gothenburg, Sweden
| | - Waqas Nasir
- Department of Clinical Chemistry and Transfusion Medicine, Institute of Biomedicine, Sahlgrenska Academy at the University of Gothenburg, Gothenburg, Sweden
| | - Carina Sihlbom
- The Proteomics Core Facility, Core Facilities, Sahlgrenska Academy at the University of Gothenburg, Gothenburg, Sweden
| | - Göran Larson
- Department of Clinical Chemistry and Transfusion Medicine, Institute of Biomedicine, Sahlgrenska Academy at the University of Gothenburg, Gothenburg, Sweden.
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Zettergren A, Karlsson S, Studer E, Sarvimäki A, Kettunen P, Thorsell A, Sihlbom C, Westberg L. Proteomic analyses of limbic regions in neonatal male, female and androgen receptor knockout mice. BMC Neurosci 2017; 18:9. [PMID: 28056817 PMCID: PMC5217640 DOI: 10.1186/s12868-016-0332-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [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: 01/26/2016] [Accepted: 12/28/2016] [Indexed: 11/10/2022] Open
Abstract
Background It is well-established that organizational effects of sex steroids during early development are fundamental for sex-typical displays of, for example, mating and aggressive behaviors in rodents and other species. Male and female brains are known to differ with respect to neuronal morphology in particular regions of the brain, including the number and size of neurons, and the density and length of dendrites in nuclei of hypothalamus and amygdala. The aim of the present study was to use global proteomics to identify proteins differentially expressed in hypothalamus/amygdala during early development (postnatal day 8) of male, female and conditional androgen receptor knockout (ARNesDel) male mice, lacking androgen receptors specifically in the brain. Furthermore, verification of selected sexually dimorphic proteins was performed using targeted proteomics. Results Our proteomic approach, iTRAQ, allowed us to investigate expression differences in the 2998 most abundantly expressed proteins in our dissected tissues. Approximately 170 proteins differed between the sexes, and 38 proteins between ARNesDel and control males (p < 0.05). In line with previous explorative studies of sexually dimorphic gene expression we mainly detected subtle protein expression differences (fold changes <1.3). The protein MARCKS (myristoylated alanine rich C kinase substrate), having the largest fold change of the proteins selected from the iTRAQ analyses and of known importance for synaptic transmission and dendritic branching, was confirmed by targeted proteomics as differentially expressed between the sexes. Conclusions Overall, our results provide solid evidence that a large number of proteins show sex differences in their brain expression and could potentially be involved in brain sexual differentiation. Furthermore, our finding of a sexually dimorphic expression of MARCKS in the brain during development warrants further investigation on the involvement in sexual differentiation of this protein. Electronic supplementary material The online version of this article (doi:10.1186/s12868-016-0332-1) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Anna Zettergren
- Department of Pharmacology, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, POB 431, 405 30, Göteborg, Sweden.,Department of Psychiatry and Neurochemistry, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, Göteborg, Sweden
| | - Sara Karlsson
- Department of Pharmacology, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, POB 431, 405 30, Göteborg, Sweden
| | - Erik Studer
- Department of Pharmacology, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, POB 431, 405 30, Göteborg, Sweden
| | - Anna Sarvimäki
- Department of Pharmacology, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, POB 431, 405 30, Göteborg, Sweden
| | - Petronella Kettunen
- Department of Psychiatry and Neurochemistry, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, Göteborg, Sweden.,Department of Neuropathology, Nuffield Department of Clinical Neurosciences, University of Oxford, John Radcliffe Hospital, Oxford, UK
| | - Annika Thorsell
- The Proteomics Core Facility, Sahlgrenska Academy, University of Gothenburg, Göteborg, Sweden
| | - Carina Sihlbom
- The Proteomics Core Facility, Sahlgrenska Academy, University of Gothenburg, Göteborg, Sweden
| | - Lars Westberg
- Department of Pharmacology, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, POB 431, 405 30, Göteborg, Sweden.
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43
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Seifert T, Malo M, Lengqvist J, Sihlbom C, Jarho EM, Luthman K. Identification of the Binding Site of Chroman-4-one-Based Sirtuin 2-Selective Inhibitors using Photoaffinity Labeling in Combination with Tandem Mass Spectrometry. J Med Chem 2016; 59:10794-10799. [PMID: 27933951 DOI: 10.1021/acs.jmedchem.6b01117] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Photoaffinity labeling (PAL) was used to identify the binding site of chroman-4-one-based SIRT2-selective inhibitors. The photoactive diazirine 4, a potent SIRT2 inhibitor, was subjected to detailed photochemical characterization. In PAL experiments with SIRT2, a tryptic peptide originating from the covalent attachment of photoactivated 4 was identified. The peptide covers both the active site of SIRT2 and the proposed binding site of chroman-4-one-based inhibitors. A high-power LED was used as source for the monochromatic UV light enabling rapid photoactivation.
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Affiliation(s)
- Tina Seifert
- Department of Chemistry and Molecular Biology, Medicinal Chemistry, University of Gothenburg , Kemivagen 10, SE-41296 Göteborg, Sweden
| | - Marcus Malo
- Department of Chemistry and Molecular Biology, Medicinal Chemistry, University of Gothenburg , Kemivagen 10, SE-41296 Göteborg, Sweden
| | - Johan Lengqvist
- The Proteomics Core Facility, Sahlgrenska Academy, University of Gothenburg , SE-41390 Göteborg, Sweden
| | - Carina Sihlbom
- The Proteomics Core Facility, Sahlgrenska Academy, University of Gothenburg , SE-41390 Göteborg, Sweden
| | - Elina M Jarho
- School of Pharmacy, University of Eastern Finland , P.O. Box 1627, 70211 Kuopio, Finland
| | - Kristina Luthman
- Department of Chemistry and Molecular Biology, Medicinal Chemistry, University of Gothenburg , Kemivagen 10, SE-41296 Göteborg, Sweden
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44
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Karlsson R, Thorell K, Hosseini S, Kenny D, Sihlbom C, Sjöling Å, Karlsson A, Nookaew I. Comparative Analysis of Two Helicobacter pylori Strains using Genomics and Mass Spectrometry-Based Proteomics. Front Microbiol 2016; 7:1757. [PMID: 27891114 PMCID: PMC5104757 DOI: 10.3389/fmicb.2016.01757] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2016] [Accepted: 10/19/2016] [Indexed: 12/20/2022] Open
Abstract
Helicobacter pylori, a gastroenteric pathogen believed to have co-evolved with humans over 100,000 years, shows significant genetic variability. This motivates the study of different H. pylori strains and the diseases they cause in order to identify determinants for disease evolution. In this study, we used proteomics tools to compare two H. pylori strains. Nic25_A was isolated in Nicaragua from a patient with intestinal metaplasia, and P12 was isolated in Europe from a patient with duodenal ulcers. Differences in the abundance of surface proteins between the two strains were determined with two mass spectrometry-based methods, label-free quantification (MaxQuant) or the use of tandem mass tags (TMT). Each approach used a lipid-based protein immobilization (LPITM) technique to enrich peptides of surface proteins. Using the MaxQuant software, we found 52 proteins that differed significantly in abundance between the two strains (up- or downregulated by a factor of 1.5); with TMT, we found 18 proteins that differed in abundance between the strains. Strain P12 had a higher abundance of proteins encoded by the cag pathogenicity island, while levels of the acid response regulator ArsR and its regulatory targets (KatA, AmiE, and proteins involved in urease production) were higher in strain Nic25_A. Our results show that differences in protein abundance between H. pylori strains can be detected with proteomic approaches; this could have important implications for the study of disease progression.
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Affiliation(s)
- Roger Karlsson
- Nanoxis Consulting ABGothenburg, Sweden; Department of Infectious Diseases, Sahlgrenska Academy, University of GothenburgGothenburg, Sweden
| | - Kaisa Thorell
- Department of Microbiology and Immunology, University of GothenburgGothenburg, Sweden; Department of Biology and Biological Engineering, Chalmers University of TechnologyGothenburg, Sweden
| | - Shaghayegh Hosseini
- Department of Biology and Biological Engineering, Chalmers University of Technology Gothenburg, Sweden
| | - Diarmuid Kenny
- Proteomics Core Facility, Sahlgrenska Academy, University of Gothenburg Gothenburg, Sweden
| | - Carina Sihlbom
- Proteomics Core Facility, Sahlgrenska Academy, University of Gothenburg Gothenburg, Sweden
| | - Åsa Sjöling
- Department of Microbiology and Immunology, University of Gothenburg Gothenburg, Sweden
| | | | - Intawat Nookaew
- Department of Biology and Biological Engineering, Chalmers University of TechnologyGothenburg, Sweden; Department of Biomedical Informatics, College of Medicine, University of Arkansas for Medical Sciences, Little RockAR, USA
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45
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Cvjetkovic A, Jang SC, Konečná B, Höög JL, Sihlbom C, Lässer C, Lötvall J. Detailed Analysis of Protein Topology of Extracellular Vesicles-Evidence of Unconventional Membrane Protein Orientation. Sci Rep 2016; 6:36338. [PMID: 27821849 PMCID: PMC5099568 DOI: 10.1038/srep36338] [Citation(s) in RCA: 99] [Impact Index Per Article: 12.4] [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: 07/08/2016] [Accepted: 10/14/2016] [Indexed: 12/13/2022] Open
Abstract
Extracellular vesicles (EVs) are important mediators of intercellular communication that change the recipient cell by shuttling lipids, RNA, or protein cargo between cells. Here, we investigate the topology of the protein cargo found in EVs, as this topology can fundamentally influence the biological effects of EVs. A multiple proteomics approach, combining proteinase treatment and biotin tagging, shows that many proteins of cytosolic origin are localized on the surface of EVs. A detailed analysis of the EV proteome at the peptide level revealed that a number of EV membrane proteins are present in a topologically reversed orientation compared to what is annotated. Two examples of such proteins, SCAMP3 and STX4, were confirmed to have a reversed topology. This reversed typology was determined using flow cytometry and fluorescent microscopy with antibodies directed toward their cytoplasmic epitopes. These results describe a novel workflow to define the EV proteome and the orientation of each protein, including membrane protein topology. These data are fundamentally important to understanding the EV proteome and required to fully explain EV biogenesis as well as biological function in recipient cells.
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Affiliation(s)
- Aleksander Cvjetkovic
- Krefting Research Center, Institute of Medicine, University of Gothenburg, Gothenburg, Sweden
| | - Su Chul Jang
- Krefting Research Center, Institute of Medicine, University of Gothenburg, Gothenburg, Sweden
| | - Barbora Konečná
- Krefting Research Center, Institute of Medicine, University of Gothenburg, Gothenburg, Sweden.,Institute of Molecular Biomedicine, Faculty of Medicine, Comenius University, Bratislava, Slovakia
| | - Johanna L Höög
- Krefting Research Center, Institute of Medicine, University of Gothenburg, Gothenburg, Sweden.,Department of Chemistry and Molecular Biology, Faculty of Natural Sciences, University of Gothenburg, Gothenburg, Sweden
| | - Carina Sihlbom
- Proteomics Core Facility, University of Gothenburg, Gothenburg, Sweden
| | - Cecilia Lässer
- Krefting Research Center, Institute of Medicine, University of Gothenburg, Gothenburg, Sweden
| | - Jan Lötvall
- Krefting Research Center, Institute of Medicine, University of Gothenburg, Gothenburg, Sweden
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Lässer C, O'Neil SE, Shelke GV, Sihlbom C, Hansson SF, Gho YS, Lundbäck B, Lötvall J. Exosomes in the nose induce immune cell trafficking and harbour an altered protein cargo in chronic airway inflammation. J Transl Med 2016; 14:181. [PMID: 27320496 PMCID: PMC4913423 DOI: 10.1186/s12967-016-0927-4] [Citation(s) in RCA: 92] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2015] [Accepted: 05/30/2016] [Indexed: 01/12/2023] Open
Abstract
Background Exosomes are nano-sized extracellular vesicles participating in cell-to-cell communication both in health and disease. However, the knowledge about the functions and molecular composition of exosomes in the upper airways is limited. The aim of the current study was therefore to determine whether nasal exosomes can influence inflammatory cells and to establish the proteome of nasal lavage fluid-derived exosomes in healthy subjects, as well as its alterations in individuals with chronic airway inflammatory diseases [asthma and chronic rhinosinusitis (CRS)]. Methods Nasal lavage fluid was collected from 14 healthy subjects, 15 subjects with asthma and 13 subjects with asthma/CRS. Exosomes were isolated with differential centrifugation and the proteome was analysed by LC–MS/MS with the application of two exclusion lists as well as using quantitative proteomics. Ingenuity Pathways Analysis and GO Term finder was used to predict the functions associated with the exosomal proteome and a migration assay was used to analyse the effect on immune cells by nasal exosomes. Results Firstly, we demonstrate that nasal exosomes can induce migration of several immune cells, such as monocytes, neutrophils and NK cells in vitro. Secondly, a mass spectrometry approach, with the application of exclusion lists, was utilised to generate a comprehensive protein inventory of the exosomes from healthy subjects. The use of exclusion lists resulted in the identification of ~15 % additional proteins, and increased the confidence in ~20 % of identified proteins. In total, 604 proteins were identified in nasal exosomes and the nasal exosomal proteome showed strong associations with immune-related functions, such as immune cell trafficking. Thirdly, a quantitative proteomics approach was used to determine alterations in the exosome proteome as a result of airway inflammatory disease. Serum-associated proteins and mucins were more abundant in the exosomes from subjects with respiratory diseases compared to healthy controls while proteins with antimicrobial functions and barrier-related proteins had decreased expression. Conclusions Nasal exosomes were shown to induce the migration of innate immune cells, which may be important as the airway epithelium is the first line of defence against pathogens and allergens. The decreased expression in barrier and antimicrobial exosomal proteins in subjects with airway diseases, could possibly contribute to an increased susceptibility to infections, which have important clinical implications in disease progression. Electronic supplementary material The online version of this article (doi:10.1186/s12967-016-0927-4) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Cecilia Lässer
- Krefting Research Centre, Department of Internal Medicine and Clinical Nutrition, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.
| | - Serena E O'Neil
- Krefting Research Centre, Department of Internal Medicine and Clinical Nutrition, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Ganesh V Shelke
- Krefting Research Centre, Department of Internal Medicine and Clinical Nutrition, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Carina Sihlbom
- Proteomics Core Facility, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Sara F Hansson
- Proteomics Core Facility, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Yong Song Gho
- Department of Life Sciences, Pohang University of Science and Technology, Pohang, Republic of Korea
| | - Bo Lundbäck
- Krefting Research Centre, Department of Internal Medicine and Clinical Nutrition, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Jan Lötvall
- Krefting Research Centre, Department of Internal Medicine and Clinical Nutrition, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.
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47
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Yu J, Schorlemer M, Gomez Toledo A, Pett C, Sihlbom C, Larson G, Westerlind U, Nilsson J. Distinctive MS/MS Fragmentation Pathways of Glycopeptide-Generated Oxonium Ions Provide Evidence of the Glycan Structure. Chemistry 2015; 22:1114-24. [DOI: 10.1002/chem.201503659] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2015] [Indexed: 01/14/2023]
Affiliation(s)
- Jin Yu
- Gesellschaft zur Förderung der Analytischen Wissenschaften e.V. ISAS-Leibniz Institute for Analytical Sciences; 44227 Dortmund Germany
| | - Manuel Schorlemer
- Gesellschaft zur Förderung der Analytischen Wissenschaften e.V. ISAS-Leibniz Institute for Analytical Sciences; 44227 Dortmund Germany
| | - Alejandro Gomez Toledo
- Department of Clinical Chemistry and Transfusion Medicine; Institute of Biomedicine; University of Gothenburg; 40530 Gothenburg Sweden
| | - Christian Pett
- Gesellschaft zur Förderung der Analytischen Wissenschaften e.V. ISAS-Leibniz Institute for Analytical Sciences; 44227 Dortmund Germany
| | - Carina Sihlbom
- Proteomics Core Facility; University of Gothenburg; 40530 Gothenburg Sweden
| | - Göran Larson
- Department of Clinical Chemistry and Transfusion Medicine; Institute of Biomedicine; University of Gothenburg; 40530 Gothenburg Sweden
| | - Ulrika Westerlind
- Gesellschaft zur Förderung der Analytischen Wissenschaften e.V. ISAS-Leibniz Institute for Analytical Sciences; 44227 Dortmund Germany
| | - Jonas Nilsson
- Department of Clinical Chemistry and Transfusion Medicine; Institute of Biomedicine; University of Gothenburg; 40530 Gothenburg Sweden
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48
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Gomez Toledo A, Nilsson J, Noborn F, Sihlbom C, Larson G. Positive Mode LC-MS/MS Analysis of Chondroitin Sulfate Modified Glycopeptides Derived from Light and Heavy Chains of The Human Inter-α-Trypsin Inhibitor Complex. Mol Cell Proteomics 2015; 14:3118-31. [PMID: 26407992 DOI: 10.1074/mcp.m115.051136] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2015] [Indexed: 01/06/2023] Open
Abstract
The inter-α-trypsin inhibitor complex is a macromolecular arrangement of structurally related heavy chain proteins covalently cross-linked to the chondroitin sulfate (CS) chain of the proteoglycan bikunin. The inter-α-trypsin inhibitor complex is abundant in plasma and associated with inflammation, kidney diseases, cancer and diabetes. Bikunin is modified at Ser-10 by a single low-sulfated CS chain of 23-55 monosaccharides with 4-9 sulfate groups. The innermost four monosaccharides (GlcAβ3Galβ3Galβ4Xylβ-O-) compose the linkage region, believed to be uniform with a 4-O-sulfation to the outer Gal. The cross-linkage region of the bikunin CS chain is located in the nonsulfated nonreducing end, (GalNAcβ4GlcAβ3)(n), to which heavy chains (H1-H3) may be bound in GalNAc to Asp ester linkages. In this study we employed a glycoproteomics protocol to enrich and analyze light and heavy chain linkage and cross-linkage region CS glycopeptides derived from the IαI complex of human plasma, urine and cerebrospinal fluid samples. The samples were trypsinized, enriched by strong anion exchange chromatography, partially depolymerized with chondroitinase ABC and analyzed by LC-MS/MS using higher-energy collisional dissociation. The analyses demonstrated that the CS linkage region of bikunin is highly heterogeneous. In addition to sulfation of the Gal residue, Xyl phosphorylation was observed although exclusively in urinary samples. We also identified novel Neu5Ac and Fuc modifications of the linkage region as well as the presence of mono- and disialylated core 1 O-linked glycans on Thr-17. Heavy chains H1 and H2 were identified cross-linked to GalNAc residues one or two GlcA residues apart and H1 was found linked to either the terminal or subterminal GalNAc residues. The fragmentation behavior of CS glycopeptides under variable higher-energy collisional dissociation conditions displays an energy dependence that may be used to obtain complementary structural details. Finally, we show that the analysis of sodium adducts provides confirmatory information about the positions of glycan substituents.
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Affiliation(s)
- Alejandro Gomez Toledo
- From the ‡Department of Clinical Chemistry and Transfusion Medicine, Institute of Biomedicine, Sahlgrenska Academy at the University of Gothenburg, Sweden
| | - Jonas Nilsson
- From the ‡Department of Clinical Chemistry and Transfusion Medicine, Institute of Biomedicine, Sahlgrenska Academy at the University of Gothenburg, Sweden
| | - Fredrik Noborn
- From the ‡Department of Clinical Chemistry and Transfusion Medicine, Institute of Biomedicine, Sahlgrenska Academy at the University of Gothenburg, Sweden
| | - Carina Sihlbom
- §The Proteomics Core Facility, Core Facilities, Sahlgrenska Academy at the University of Gothenburg, Sweden
| | - Göran Larson
- From the ‡Department of Clinical Chemistry and Transfusion Medicine, Institute of Biomedicine, Sahlgrenska Academy at the University of Gothenburg, Sweden;
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49
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Svala E, Löfgren M, Sihlbom C, Rüetschi U, Lindahl A, Ekman S, Skiöldebrand E. An inflammatory equine model demonstrates dynamic changes of immune response and cartilage matrix molecule degradation in vitro. Connect Tissue Res 2015; 56:315-25. [PMID: 25803623 DOI: 10.3109/03008207.2015.1027340] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
The molecular aspects of inflammation were investigated in equine articular cartilage explants using quantitative proteomics. Articular cartilage explants were stimulated with interleukin (IL)-1β in vitro for 25 days, and proteins released into cell culture media were chemically labeled with isobaric mass tags and analyzed by liquid chromatography-tandem mass spectrometry. A total of 127 proteins were identified and quantified in media from explants. IL-1β-stimulation resulted in an abundance of proteins related to inflammation, including matrix metalloproteinases, acute phase proteins, complement components and IL-6. Extracellular matrix (ECM) molecules were released at different time points, and fragmentation of aggrecan and cartilage oligomeric matrix protein was observed at days 3 and 6, similar to early-stage OA in vivo. Degradation products of the collagenous network were observed at days 18 and 22, similar to late-stage OA. This model displays a longitudinal quantification of released molecules from the ECM of articular cartilage. Identification of dynamic changes of extracellular matrix molecules in the secretome of equine explants stimulated with IL-1β over time may be useful for identifying components released at different time points during the spontaneous OA process.
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Affiliation(s)
- Emilia Svala
- Section of Pathology, Department of Biomedical Sciences and Veterinary Public Health, Swedish University of Agricultural Sciences , Uppsala , Sweden
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50
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Hellström M, El-Akouri R, Sihlbom C, Olsson B, Lengqvist J, Bäckdahl H, Johansson B, Olausson M, Sumitran-Holgersson S, Brännström M. Towards the development of a bioengineered uterus: comparison of different protocols for rat uterus decellularization. Acta Biomater 2014; 10:5034-5042. [PMID: 25169258 DOI: 10.1016/j.actbio.2014.08.018] [Citation(s) in RCA: 72] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2014] [Revised: 07/17/2014] [Accepted: 08/18/2014] [Indexed: 10/24/2022]
Abstract
Uterus transplantation (UTx) may be the only possible curative treatment for absolute uterine factor infertility, which affects 1 in every 500 females of fertile age. We recently presented the 6-month results from the first clinical UTx trial, describing nine live-donor procedures. This routine involves complicated surgery and requires potentially harmful immune suppression to prevent rejection. However, tissue engineering applications using biomaterials and stem cells may replace the need for a live donor, and could prevent the required immunosuppressive treatment. To investigate the basic aspects of this, we developed a novel whole-uterus scaffold design for uterus tissue engineering experiments in the rat. Decellularization was achieved by perfusion of detergents and ionic solutions. The remaining matrix and its biochemical and mechanical properties were quantitatively compared from using three different protocols. The constructs were further compared with native uterus tissue composition. Perfusion with Triton X-100/dimethyl sulfoxide/H2O led to a compact, weaker scaffold that showed evidence of a compromised matrix organization. Sodium deoxycholate/dH2O perfusion gave rise to a porous scaffold that structurally and mechanically resembled native uterus better. An innovative combination of two proteomic analyses revealed higher fibronectin and versican content in these porous scaffolds, which may explain the improved scaffold organization. Together with other important protocol-dependent differences, our results can contribute to the development of improved decellularization protocols for assorted organs. Furthermore, our study shows the first available data on decellularized whole uterus, and creates new opportunities for numerous in vitro and in vivo whole-uterus tissue engineering applications.
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