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Aarsund M, Nyman TA, Stensland ME, Wu Y, Inngjerdingen M. Isolation of a cytolytic subpopulation of extracellular vesicles derived from NK cells containing NKG7 and cytolytic proteins. Front Immunol 2022; 13:977353. [PMID: 36189227 PMCID: PMC9520454 DOI: 10.3389/fimmu.2022.977353] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2022] [Accepted: 08/23/2022] [Indexed: 11/13/2022] Open
Abstract
NK cells can broadly target and kill malignant cells via release of cytolytic proteins. NK cells also release extracellular vesicles (EVs) that contain cytolytic proteins, previously shown to induce apoptosis of a variety of cancer cells in vitro and in vivo. The EVs released by NK cells are likely very heterogeneous, as vesicles can be released from the plasma membrane or from different intracellular compartments. In this study, we undertook a fractionation scheme to enrich for cytolytic NK-EVs. NK-EVs were harvested from culture medium from the human NK-92 cell line or primary human NK cells grown in serum-free conditions. By combining ultracentrifugation with downstream density-gradient ultracentrifugation or size-exclusion chromatography, distinct EV populations were identified. Density-gradient ultracentrifugation led to separation of three subpopulations of EVs. The different EV isolates were characterized by label-free quantitative mass spectrometry and western blotting, and we found that one subpopulation was primarily enriched for plasma membrane proteins and tetraspanins CD37, CD82, and CD151, and likely represents microvesicles. The other major subpopulation was enriched in intracellularly derived markers with high expression of the endosomal tetraspanin CD63 and markers for intracellular organelles. The intracellularly derived EVs were highly enriched in cytolytic proteins, and possessed high apoptotic activity against HCT-116 colon cancer spheroids. To further enrich for cytolytic EVs, immunoaffinity pulldowns led to the isolation of a subset of EVs containing the cytolytic granule marker NKG7 and the majority of vesicular granzyme B content. We therefore propose that EVs containing cytolytic proteins may primarily be released via cytolytic granules.
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2
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Dahlberg D, Rummel J, Distante S, De Souza GA, Stensland ME, Mariussen E, Rootwelt H, Voie Ø, Hassel B. Glioblastoma microenvironment contains multiple hormonal and non-hormonal growth-stimulating factors. Fluids Barriers CNS 2022; 19:45. [PMID: 35659255 PMCID: PMC9166426 DOI: 10.1186/s12987-022-00333-z] [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] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Accepted: 04/28/2022] [Indexed: 12/17/2022] Open
Abstract
Background The growth of malignant tumors is influenced by their microenvironment. Glioblastoma, an aggressive primary brain tumor, may have cysts containing fluid that represents the tumor microenvironment. The aim of this study was to investigate whether the cyst fluid of cystic glioblastomas contains growth-stimulating factors. Identification of such growth factors may pave the way for the development of targeted anti-glioblastoma therapies. Methods We performed hormone analysis of cyst fluid from 25 cystic glioblastomas and proteomics analysis of cyst fluid from another 12 cystic glioblastomas. Results Glioblastoma cyst fluid contained hormones within wide concentration ranges: Insulin-like growth factor 1 (0–13.7 nmol/L), insulin (1.4–133 pmol/L), erythropoietin (4.7–402 IU/L), growth hormone (0–0.93 µg/L), testosterone (0.2–10.1 nmol/L), estradiol (0–1.0 nmol/L), triiodothyronine (1.0–11.5). Tumor volume correlated with cyst fluid concentrations of growth hormone and testosterone. Survival correlated inversely with cyst fluid concentration of erythropoietin. Several hormones were present at concentrations that have been shown to stimulate glioblastoma growth in vitro. Concentrations of erythropoietin and estradiol (in men) were higher in cyst fluid than in serum, suggesting formation by tumor or brain tissue. Quantitatively, glioblastoma cyst fluid was dominated by serum proteins, illustrating blood–brain barrier leakage. Proteomics identified several proteins that stimulate tumor cell proliferation and invasiveness, others that inhibit apoptosis or mediate adaption to hypoxia and some that induce neovascularization or blood–brain barrier leakage. Conclusion The microenvironment of glioblastomas is rich in growth-stimulating factors that may originate from the circulation, the tumor, or the brain. The wide variation in cyst fluid hormone concentrations may differentially influence tumor growth. Supplementary Information The online version contains supplementary material available at 10.1186/s12987-022-00333-z.
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Affiliation(s)
- Daniel Dahlberg
- Department of Neurosurgery, Oslo University Hospital, Nydalen, PO box 4950, 0424, Oslo, Norway.
| | - Jutta Rummel
- Department of Neurohabilitation and Complex Neurology, Oslo University Hospital, Oslo, Norway
| | - Sonia Distante
- Department of Medical Biochemistry, Oslo University Hospital, Oslo, Norway
| | - Gustavo Antonio De Souza
- Institute of Immunology and Centre for Immune Regulation, Oslo University Hospital, Oslo, Norway.,Department of Biochemistry, Universidade Federal Do Rio Grande Do Norte, Natal, RN, Brazil
| | - Maria Ekman Stensland
- Institute of Immunology and Centre for Immune Regulation, Oslo University Hospital, Oslo, Norway
| | - Espen Mariussen
- Norwegian Defence Research Establishment (FFI), Kjeller, Norway.,Department of Air Quality and Noise, Norwegian Institute of Public Health, Oslo, Norway
| | - Helge Rootwelt
- Department of Medical Biochemistry, Oslo University Hospital, Oslo, Norway
| | - Øyvind Voie
- Norwegian Defence Research Establishment (FFI), Kjeller, Norway
| | - Bjørnar Hassel
- Department of Neurohabilitation and Complex Neurology, Oslo University Hospital, Oslo, Norway.,Norwegian Defence Research Establishment (FFI), Kjeller, Norway.,Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway
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Mirlashari MR, Vetlesen A, Nissen-Meyer LSH, Stensland ME, Singh SK, Nyman TA, Hetland G. Proteomic study of apheresis platelets made HLA class I deficient for transfusion of refractory patients. Proteomics Clin Appl 2021; 15:e2100022. [PMID: 34510746 DOI: 10.1002/prca.202100022] [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: 04/08/2021] [Revised: 08/17/2021] [Accepted: 09/09/2021] [Indexed: 11/06/2022]
Abstract
PURPOSE Refractoriness can occur after repeated platelet (PLT) transfusions because of alloimmunization to HLA class I antigens on transfused PLTs and generation of anti-HLA antibodies that bind to the foreign PLTs and initiate their destruction. Such refractoriness can be overcome by provision of HLA-matched PLTs from HLA typed donors. However, since the procedure is both expensive and time-consuming, an alternative approach is to deplete PLTs of HLA class I molecules by a brief treatment with citric acid, on ice. This is shown to be feasible without damaging PLT function. We used label free quantitative mass spectrometry (MS)-based proteomics to investigate the effect of acid treatment on apheresis PLTs for combatting immunologic PLT refractoriness. EXPERIMENTAL DESIGN Proteomic analyses are undertaken using PLTs from seven apheresis concentrates, which were split in two with or without acid treatment. RESULTS In total 1717 proteins in apheresis PLTs were quantified using proteomics. Data are available via ProteomeXchange with identifier PXD027893 . Of these, the amount of 80 proteins changed significantly after acid treatment, but overall there were not any major differences in proteomes between samples with and without acid treatment. CONCLUSIONS AND CLINICAL RELEVANCE In general, the changes of PLT proteins after treatment with citric acid were quite small and functionally safe. Hence, this result taken together with our previously published data indicates that acid treated PLTs can be used for treatment of patients with PLT refractoriness and opens up for a clinical trial.
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Affiliation(s)
| | - Annette Vetlesen
- Department of Immunology and Transfusion Medicine, Oslo University Hospital, Oslo, Norway
| | | | - Maria Ekman Stensland
- Department of Immunology and Transfusion Medicine, Oslo University Hospital, Oslo, Norway
| | - Sachin Kumar Singh
- Department of Immunology and Transfusion Medicine, Oslo University Hospital, Oslo, Norway
| | - Tuula Anneli Nyman
- Department of Immunology and Transfusion Medicine, Oslo University Hospital, Oslo, Norway.,Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - Geir Hetland
- Department of Immunology and Transfusion Medicine, Oslo University Hospital, Oslo, Norway.,Institute of Clinical Medicine, University of Oslo, Oslo, Norway
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Ramberg H, Richardsen E, de Souza GA, Rakaee M, Stensland ME, Braadland PR, Nygård S, Ögren O, Guldvik IJ, Berge V, Svindland A, Taskén KA, Andersen S. Proteomic analyses identify major vault protein as a prognostic biomarker for fatal prostate cancer. Carcinogenesis 2021; 42:685-693. [PMID: 33609362 PMCID: PMC8163044 DOI: 10.1093/carcin/bgab015] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [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: 10/09/2020] [Revised: 01/25/2021] [Accepted: 02/17/2021] [Indexed: 12/13/2022] Open
Abstract
The demographic shift toward an older population will increase the number of prostate cancer cases. A challenge in the treatment of prostate cancer is to avoid undertreatment of patients at high risk of progression following curative treatment. These men can benefit from early salvage treatment. An explorative cohort consisting of tissue from 16 patients who underwent radical prostatectomy, and were either alive or had died from prostate cancer within 10 years postsurgery, was analyzed by mass spectrometry analysis. Following proteomic and bioinformatic analyses, major vault protein (MVP) was identified as a putative prognostic biomarker. A publicly available tissue proteomics dataset and a retrospective cohort of 368 prostate cancer patients were used for validation. The prognostic value of the MVP was verified by scoring immunohistochemical staining of a tissue microarray. High level of MVP was associated with more than 4-fold higher risk for death from prostate cancer (hazard ratio = 4.41, 95% confidence interval: 1.45–13.38; P = 0.009) in a Cox proportional hazard models, adjusted for Cancer of the Prostate Risk Assessments Post-surgical (CAPRA-S) score and perineural invasion. Decision curve analyses suggested an improved standardized net benefit, ranging from 0.06 to 0.18, of adding MVP onto CAPRA-S score. This observation was confirmed by receiver operator characteristics curve analyses for the CAPRA-S score versus CAPRA-S and MVP score (area under the curve: 0.58 versus 0.73). From these analyses, one can infer that MVP levels in combination with CAPRA-S score might add onto established risk parameters to identify patients with lethal prostate cancer.
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Affiliation(s)
- Håkon Ramberg
- Department of Tumor Biology, Institute for Cancer Research, Oslo University Hospital, Oslo, Norway
| | - Elin Richardsen
- Department of Medical Biology, The Arctic University of Norway, Tromsø, Norway.,Department of Clinical Pathology, University Hospital of North Norway, Tromsø, Norway
| | - Gustavo A de Souza
- Department of Immunology and Transfusion Medicine, Oslo University Hospital, Oslo, Norway.,Department of Immunology, Proteomics Core Facility, Oslo University Hospital, Oslo, Norway
| | - Mehrdad Rakaee
- Department of Medical Biology, The Arctic University of Norway, Tromsø, Norway.,Department of Clinical Medicine, The Arctic University of Norway, Tromsø, Norway
| | - Maria Ekman Stensland
- Department of Immunology and Transfusion Medicine, Oslo University Hospital, Oslo, Norway.,Department of Immunology, Proteomics Core Facility, Oslo University Hospital, Oslo, Norway
| | - Peder Rustøen Braadland
- Department of Tumor Biology, Institute for Cancer Research, Oslo University Hospital, Oslo, Norway
| | - Ståle Nygård
- Department of Tumorbiology, Bioinformatic Core Facility, Institute for Cancer Research, Oslo University Hospital, Oslo, Norway.,Center for Bioinformatics, Department of Informatics, University of Oslo, Oslo, Norway
| | - Olov Ögren
- Department of Tumor Biology, Institute for Cancer Research, Oslo University Hospital, Oslo, Norway
| | - Ingrid J Guldvik
- Department of Tumor Biology, Institute for Cancer Research, Oslo University Hospital, Oslo, Norway
| | - Viktor Berge
- Department of Urology, Oslo University Hospital, Oslo, Norway
| | - Aud Svindland
- Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - Kristin A Taskén
- Department of Tumor Biology, Institute for Cancer Research, Oslo University Hospital, Oslo, Norway.,Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - Sigve Andersen
- Department of Clinical Medicine, The Arctic University of Norway, Tromsø, Norway.,Department of Oncology, University Hospital of North Norway, Tromsø, Norway
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Sikorski K, Mehta A, Inngjerdingen M, Thakor F, Kling S, Kalina T, Nyman TA, Stensland ME, Zhou W, de Souza GA, Holden L, Stuchly J, Templin M, Lund-Johansen F. A high-throughput pipeline for validation of antibodies. Nat Methods 2018; 15:909-912. [PMID: 30377371 DOI: 10.1038/s41592-018-0179-8] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2017] [Accepted: 09/14/2018] [Indexed: 11/09/2022]
Abstract
Western blotting (WB) is widely used to test antibody specificity, but the assay has low throughput and precision. Here we used preparative gel electrophoresis to develop a capture format for WB. Fractions with soluble, size-separated proteins facilitated parallel readout with antibody arrays, shotgun mass spectrometry (MS) and immunoprecipitation followed by MS (IP-MS). This pipeline provided the means for large-scale implementation of antibody validation concepts proposed by an international working group on antibody validation (IWGAV).
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Affiliation(s)
- Krzysztof Sikorski
- Department of Immunology, University of Oslo and Oslo University Hospital, Oslo, Norway.,K.G. Jebsen Center for Cancer Immunotherapy, University of Oslo, Oslo, Norway
| | - Adi Mehta
- Department of Immunology, University of Oslo and Oslo University Hospital, Oslo, Norway.,Department of Pathology, Oslo University Hospital, Oslo, Norway.,K.G. Jebsen Inflammation Research Centre, University of Oslo, Oslo, Norway
| | - Marit Inngjerdingen
- Department of Immunology, University of Oslo and Oslo University Hospital, Oslo, Norway
| | - Flourina Thakor
- Department of Pathology, Oslo University Hospital, Oslo, Norway.,K.G. Jebsen Inflammation Research Centre, University of Oslo, Oslo, Norway
| | - Simon Kling
- NMI Natural and Medical Sciences Institute, University of Tübingen, Reutlingen, Germany
| | - Tomas Kalina
- CLIP-Childhood Leukemia Investigation Prague, Department of Pediatric Hematology and Oncology, 2nd Faculty of Medicine, Charles University Prague and University Hospital Motol, Prague, Czech Republic
| | - Tuula A Nyman
- Department of Immunology, University of Oslo and Oslo University Hospital, Oslo, Norway
| | - Maria Ekman Stensland
- Department of Immunology, University of Oslo and Oslo University Hospital, Oslo, Norway
| | - Wei Zhou
- SeekQuence, Mountain View, CA, USA
| | - Gustavo A de Souza
- The Brain Institute, Universidade Federal do Rio Grande do Norte, Natal, Brazil
| | | | - Jan Stuchly
- CLIP-Childhood Leukemia Investigation Prague, Department of Pediatric Hematology and Oncology, 2nd Faculty of Medicine, Charles University Prague and University Hospital Motol, Prague, Czech Republic
| | - Markus Templin
- NMI Natural and Medical Sciences Institute, University of Tübingen, Reutlingen, Germany
| | - Fridtjof Lund-Johansen
- Department of Immunology, University of Oslo and Oslo University Hospital, Oslo, Norway. .,K.G. Jebsen Center for Cancer Immunotherapy, University of Oslo, Oslo, Norway.
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Hassel B, De Souza GA, Stensland ME, Ivanovic J, Voie Ø, Dahlberg D. The proteome of pus from human brain abscesses: host-derived neurotoxic proteins and the cell-type diversity of CNS pus. J Neurosurg 2018; 129:829-837. [DOI: 10.3171/2017.4.jns17284] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
OBJECTIVEWhat determines the extent of tissue destruction during brain abscess formation is not known. Pyogenic brain infections cause destruction of brain tissue that greatly exceeds the area occupied by microbes, as seen in experimental studies, pointing to cytotoxic factors other than microbes in pus. This study examined whether brain abscess pus contains cytotoxic proteins that might explain the extent of tissue destruction.METHODSPus proteins from 20 human brain abscesses and, for comparison, 7 subdural empyemas were analyzed by proteomics mass spectrometry. Tissue destruction was determined from brain abscess volumes as measured by MRI.RESULTSBrain abscess volume correlated with extracellular pus levels of antibacterial proteins from neutrophils and macrophages: myeloperoxidase (r = 0.64), azurocidin (r = 0.61), lactotransferrin (r = 0.57), and cathelicidin (r = 0.52) (p values 0.002–0.018), suggesting an association between leukocytic activity and tissue damage. In contrast, perfringolysin O, a cytotoxic protein from Streptococcus intermedius that was detected in 16 patients, did not correlate with abscess volume (r = 0.12, p = 0.66). The median number of proteins identified in each pus sample was 870 (range 643–1094). Antibiotic or steroid treatment prior to pus evacuation did not reduce the number or levels of pus proteins. Some of the identified proteins have well-known neurotoxic effects, e.g., eosinophil cationic protein and nonsecretory ribonuclease (also known as eosinophil-derived neurotoxin). The cellular response to brain infection was highly complex, as reflected by the presence of proteins that were specific for neutrophils, eosinophils, macrophages, platelets, fibroblasts, or mast cells in addition to plasma and erythrocytic proteins. Other proteins (neurofilaments, myelin basic protein, and glial fibrillary acidic protein) were specific for brain cells and reflected damage to neurons, oligodendrocytes, and astrocytes, respectively. Pus from subdural empyemas had significantly higher levels of plasma proteins and lower levels of leukocytic proteins than pus from intracerebral abscesses, suggesting greater turnover of the extracellular fluid of empyemas and washout of pus constituents.CONCLUSIONSBrain abscess pus contains leukocytic proteins that are neurotoxic and likely participate actively in the excessive tissue destruction inherent in brain abscess formation. These findings underscore the importance of rapid evacuation of brain abscess pus.
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Affiliation(s)
- Bjørnar Hassel
- 1Department of Complex Neurology and Neurohabilitation,
- 2Norwegian Defence Research Establishment (FFI), Kjeller, Norway; and
| | - Gustavo Antonio De Souza
- 3Institute of Immunology and Centre for Immune Regulation, and
- 4The Brain Institute, Universidade Federal do Rio Grande do Norte, Natal, Rio Grande do Norte, Brazil
| | | | - Jugoslav Ivanovic
- 5Department of Neurosurgery, Oslo University Hospital, University of Oslo
| | - Øyvind Voie
- 2Norwegian Defence Research Establishment (FFI), Kjeller, Norway; and
| | - Daniel Dahlberg
- 5Department of Neurosurgery, Oslo University Hospital, University of Oslo
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