1
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Martins LA, Buša M, Chlastáková A, Kotál J, Beránková Z, Stergiou N, Jmel MA, Schmitt E, Chmelař J, Mareš M, Kotsyfakis M. Protease-bound structure of Ricistatin provides insights into the mechanism of action of tick salivary cystatins in the vertebrate host. Cell Mol Life Sci 2023; 80:339. [PMID: 37898573 PMCID: PMC11071917 DOI: 10.1007/s00018-023-04993-4] [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: 05/12/2023] [Revised: 09/28/2023] [Accepted: 09/29/2023] [Indexed: 10/30/2023]
Abstract
Tick saliva injected into the vertebrate host contains bioactive anti-proteolytic proteins from the cystatin family; however, the molecular basis of their unusual biochemical and physiological properties, distinct from those of host homologs, is unknown. Here, we present Ricistatin, a novel secreted cystatin identified in the salivary gland transcriptome of Ixodes ricinus ticks. Recombinant Ricistatin inhibited host-derived cysteine cathepsins and preferentially targeted endopeptidases, while having only limited impact on proteolysis driven by exopeptidases. Determination of the crystal structure of Ricistatin in complex with a cysteine cathepsin together with characterization of structural determinants in the Ricistatin binding site explained its restricted specificity. Furthermore, Ricistatin was potently immunosuppressive and anti-inflammatory, reducing levels of pro-inflammatory cytokines IL-6, IL-1β, and TNF-α and nitric oxide in macrophages; IL-2 and IL-9 levels in Th9 cells; and OVA antigen-induced CD4+ T cell proliferation and neutrophil migration. This work highlights the immunotherapeutic potential of Ricistatin and, for the first time, provides structural insights into the unique narrow selectivity of tick salivary cystatins determining their bioactivity.
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Affiliation(s)
- Larissa A Martins
- Institute of Parasitology, Branišovská 1160/31, 37005, Ceske Budejovice, Czech Republic
- Laboratory of Neurological Infections and Immunity, Rocky Mountain Laboratories, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Hamilton, MT, 59840, USA
| | - Michal Buša
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Flemingovo N. 2, 16610, Prague, Czech Republic
| | - Adéla Chlastáková
- Department of Medical Biology, Faculty of Science, the University of South Bohemia in České Budějovice, Branišovská 1760C, 37005, Ceske Budejovice, Czech Republic
| | - Jan Kotál
- Institute of Parasitology, Branišovská 1160/31, 37005, Ceske Budejovice, Czech Republic
- Department of Medical Biology, Faculty of Science, the University of South Bohemia in České Budějovice, Branišovská 1760C, 37005, Ceske Budejovice, Czech Republic
| | - Zuzana Beránková
- Department of Medical Biology, Faculty of Science, the University of South Bohemia in České Budějovice, Branišovská 1760C, 37005, Ceske Budejovice, Czech Republic
| | - Natascha Stergiou
- Institute for Immunology, University Medical Center of the Johannes Gutenberg-University Mainz, Langenbeckstrasse 1, 55131, Mainz, Germany
| | - Mohamed Amine Jmel
- Institute of Parasitology, Branišovská 1160/31, 37005, Ceske Budejovice, Czech Republic
| | - Edgar Schmitt
- Institute for Immunology, University Medical Center of the Johannes Gutenberg-University Mainz, Langenbeckstrasse 1, 55131, Mainz, Germany
| | - Jindřich Chmelař
- Department of Medical Biology, Faculty of Science, the University of South Bohemia in České Budějovice, Branišovská 1760C, 37005, Ceske Budejovice, Czech Republic
| | - Michael Mareš
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Flemingovo N. 2, 16610, Prague, Czech Republic.
| | - Michail Kotsyfakis
- Institute of Parasitology, Branišovská 1160/31, 37005, Ceske Budejovice, Czech Republic.
- Institute of Molecular Biology and Biotechnology, Foundation for Research and Technology-Hellas, N. Plastira 100, 70013, Heraklion, Crete, Greece.
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2
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Kapogiannis C, Zaggogianni T, Stergiou N, Kakleas K, Kapogiannis A, Gakiopoulou H, Kanaka-Gantenbein C. Cyclic neutropenia and concomitant IgA nephropathy: a case report. BMC Nephrol 2023; 24:124. [PMID: 37138249 PMCID: PMC10157981 DOI: 10.1186/s12882-023-03179-1] [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: 08/28/2022] [Accepted: 04/20/2023] [Indexed: 05/05/2023] Open
Abstract
BACKGROUND IgA nephropathy (IgAN) is universally recognized as one of the most common primary glomerular diseases in all ages. Cyclic neutropenia (CN) is a rare haematologic disorder that is associated with mutations of the ELANE gene. The co-occurrence of IgAN and CN is extremely rare. This is the first case report of a patient with IgAN and genetically confirmed CN. CASE PRESENTATION We report a case of a 10-year-old boy who presented with recurrent viral upper respiratory tract infections accompanied by several episodes of febrile neutropenia, haematuria, proteinuria and acute kidney injury. Upon first admission, his physical examination was unremarkable. His kidney function was impaired, whereas his urine microscopy showed evidence of macroscopic haematuria and proteinuria. Further workup showed elevated IgA. The renal histology was consistent with mesangial and endocapillary hypercellularity with mild crescentic lesions, while immunofluorescence microscopy showed IgA-positive staining, which was characteristic of IgAN. Moreover, genetic testing confirmed the clinical diagnosis of CN, therefore Granulocyte colony-stimulating factor (G-CSF) was initiated to stabilize the neutrophil count. Regarding proteinuria control, the patient was initially treated with an Angiotensin-converting-enzyme inhibitor for approximately 28 months. However, due to progressive proteinuria (> 1 g/24 h), Corticosteroids (CS) were added for a period of 6 months according to the revised 2021 KDIGO guidelines with favorable outcome. CONCLUSIONS Patients with CN are more susceptible to recurrent viral infections, which can trigger IgAN attacks. In our case CS induced remarkable proteinuria remission. The use of G-CSF contributed to the resolution of severe neutropenic episodes, viral infections and concomitant AKI episodes, contributing to better prognosis of IgAN. Further studies are mandatory to determine whether there is a genetical predisposition for IgAN in children with CN.
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Affiliation(s)
- C Kapogiannis
- Renal Unit, First Department of Paediatrics, National and Kapodistrian University of Athens, Aghia Sophia Children's Hospital, Athens, Greece.
- Renal Unit, Great Ormond Street Hospital, London, UK.
| | - T Zaggogianni
- First Department of Paediatrics, National and Kapodistrian University of Athens, Aghia Sophia Children's Hospital, Athens, Greece
| | - N Stergiou
- Renal Unit, First Department of Paediatrics, National and Kapodistrian University of Athens, Aghia Sophia Children's Hospital, Athens, Greece
| | - K Kakleas
- First Department of Paediatrics, National and Kapodistrian University of Athens, Aghia Sophia Children's Hospital, Athens, Greece
| | - A Kapogiannis
- Renal Unit, First Department of Paediatrics, National and Kapodistrian University of Athens, Aghia Sophia Children's Hospital, Athens, Greece
| | - H Gakiopoulou
- First Department of Pathology, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - C Kanaka-Gantenbein
- First Department of Paediatrics, National and Kapodistrian University of Athens, Aghia Sophia Children's Hospital, Athens, Greece
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3
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Stergiou N, Wuensche TE, Schreurs M, Mes I, Verlaan M, Kooijman EJM, Windhorst AD, Helboe L, Vergo S, Christensen S, Asuni AA, Jensen A, Van Dongen GAMS, Bang-Andersen B, Vugts DJ, Beaino W. Application of 89Zr-DFO*-immuno-PET to assess improved target engagement of a bispecific anti-amyloid-ß monoclonal antibody. Eur J Nucl Med Mol Imaging 2023; 50:1306-1317. [PMID: 36635462 PMCID: PMC10027647 DOI: 10.1007/s00259-023-06109-3] [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] [Accepted: 01/05/2023] [Indexed: 01/14/2023]
Abstract
PURPOSE The recent conditional FDA approval of Aducanumab (Adu) for treating Alzheimer's disease (AD) and the continued discussions around that decision have increased interest in immunotherapy for AD and other brain diseases. Reliable techniques for brain imaging of antibodies may guide decision-making in the future but needs further development. In this study, we used 89Zr-immuno-PET to evaluate the targeting and distribution of a bispecific brain-shuttle IgG based on Adu with transferrin receptor protein-1 (TfR1) shuttling mechanism, mAbAdu-scFab8D3, designated Adu-8D3, as a candidate theranostic for AD. We also validated the 89Zr-immuno-PET platform as an enabling technology for developing new antibody-based theranostics for brain disorders. METHODS Adu, Adu-8D3, and the non-binding control construct B12-8D3 were modified with DFO*-NCS and radiolabeled with 89Zr. APP/PS1 mice were injected with 89Zr-labeled mAbs and imaged on days 3 and 7 by positron emission tomography (PET). Ex vivo biodistribution was performed on day 7, and ex vivo autoradiography and immunofluorescence staining were done on brain tissue to validate the PET imaging results and target engagement with amyloid-β plaques. Additionally, [89Zr]Zr-DFO*-Adu-8D3 was evaluated in 3, 7, and 10-month-old APP/PS1 mice to test its potential in early stage disease. RESULTS A 7-fold higher brain uptake was observed for [89Zr]Zr-DFO*-Adu-8D3 compared to [89Zr]Zr-DFO*-Adu and a 2.7-fold higher uptake compared to [89Zr]Zr-DFO*-B12-8D3 on day 7. Autoradiography and immunofluorescence of [89Zr]Zr-DFO*-Adu-8D3 showed co-localization with amyloid plaques, which was not the case with the Adu and B12-8D3 conjugates. [89Zr]Zr-DFO*-Adu-8D3 was able to detect low plaque load in 3-month-old APP/PS1 mice. CONCLUSION 89Zr-DFO*-immuno-PET revealed high and specific uptake of the bispecific Adu-8D3 in the brain and can be used for the early detection of Aβ plaque pathology. Here, we demonstrate that 89Zr-DFO*-immuno-PET can be used to visualize and quantify brain uptake of mAbs and contribute to the evaluation of biological therapeutics for brain diseases.
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Affiliation(s)
- N Stergiou
- Radiology & Nuclear Medicine, Amsterdam UMC location Vrije Universiteit Amsterdam, de Boelelaan 1117, Amsterdam, The Netherlands
| | - T E Wuensche
- Radiology & Nuclear Medicine, Amsterdam UMC location Vrije Universiteit Amsterdam, de Boelelaan 1117, Amsterdam, The Netherlands
| | - M Schreurs
- Radiology & Nuclear Medicine, Amsterdam UMC location Vrije Universiteit Amsterdam, de Boelelaan 1117, Amsterdam, The Netherlands
| | - I Mes
- Radiology & Nuclear Medicine, Amsterdam UMC location Vrije Universiteit Amsterdam, de Boelelaan 1117, Amsterdam, The Netherlands
| | - M Verlaan
- Radiology & Nuclear Medicine, Amsterdam UMC location Vrije Universiteit Amsterdam, de Boelelaan 1117, Amsterdam, The Netherlands
| | - E J M Kooijman
- Radiology & Nuclear Medicine, Amsterdam UMC location Vrije Universiteit Amsterdam, de Boelelaan 1117, Amsterdam, The Netherlands
| | - A D Windhorst
- Radiology & Nuclear Medicine, Amsterdam UMC location Vrije Universiteit Amsterdam, de Boelelaan 1117, Amsterdam, The Netherlands
| | - L Helboe
- H. Lundbeck A/S, Copenhagen, Denmark
| | - S Vergo
- H. Lundbeck A/S, Copenhagen, Denmark
| | | | - A A Asuni
- H. Lundbeck A/S, Copenhagen, Denmark
| | - A Jensen
- H. Lundbeck A/S, Copenhagen, Denmark
| | - G A M S Van Dongen
- Radiology & Nuclear Medicine, Amsterdam UMC location Vrije Universiteit Amsterdam, de Boelelaan 1117, Amsterdam, The Netherlands
| | | | - D J Vugts
- Radiology & Nuclear Medicine, Amsterdam UMC location Vrije Universiteit Amsterdam, de Boelelaan 1117, Amsterdam, The Netherlands
| | - W Beaino
- Radiology & Nuclear Medicine, Amsterdam UMC location Vrije Universiteit Amsterdam, de Boelelaan 1117, Amsterdam, The Netherlands.
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4
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Wuensche TE, Stergiou N, Mes I, Verlaan M, Schreurs M, Kooijman EJM, Janssen B, Windhorst AD, Jensen A, Asuni AA, Bang-Andersen B, Beaino W, Dongen GAMS, Vugts DJ. Advancing 89Zr-immuno-PET in neuroscience with a bispecific anti-amyloid-beta monoclonal antibody - The choice of chelator is essential. Theranostics 2022; 12:7067-7079. [PMID: 36276653 PMCID: PMC9576608 DOI: 10.7150/thno.73509] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Accepted: 08/27/2022] [Indexed: 11/05/2022] Open
Abstract
The accelerated approval of the monoclonal antibody (mAb) aducanumab as a treatment option for Alzheimer's Disease and the continued discussions about its efficacy have shown that a better understanding of immunotherapy for the treatment of neurodegenerative diseases is needed. 89Zr-immuno-PET could be a suitable tool to open new avenues for the diagnosis of CNS disorders, monitoring disease progression, and assessment of novel therapeutics. Herein, three different 89Zr-labeling strategies and direct radioiodination with 125I of a bispecific anti-amyloid-beta aducanumab derivate, consisting of aducanumab with a C-terminal fused anti-transferrin receptor binding single chain Fab fragment derived from 8D3 (Adu-8D3), were compared ex vivo and in vivo with regard to brain uptake and target engagement in an APP/PS1 Alzheimer's disease mouse model and wild type animals. Methods: Adu-8D3 and a negative control antibody, based on the HIV specific B12 antibody also carrying C-terminal fused 8D3 scFab (B12-8D3), were each conjugated with NCS-DFO, NCS-DFO*, or TFP-N-suc-DFO-Fe-ester, followed by radiolabeling with 89Zr. 125I was used as a substitute for 124I for labeling of both antibodies. 30 µg of radiolabeled mAb, corresponding to approximately 6 MBq 89Zr or 2.5 MBq 125I, were injected per mouse. PET imaging was performed 1, 3 and 7 days post injection (p.i.). All mice were sacrificed on day 7 p.i. and subjected to ex vivo biodistribution and brain autoradiography. Immunostaining on brain tissue was performed after autoradiography for further validation. Results:Ex vivo biodistribution revealed that the brain uptake of [89Zr]Zr-DFO*-NCS-Adu-8D3 (2.19 ±0.12 %ID/g) was as high as for its 125I-analog (2.21 ±0.15 %ID/g). [89Zr]Zr-DFO-NCS-Adu-8D3 and [89Zr]Zr-DFO-N-suc-Adu-8D3 showed significantly lower uptake (< 0.65 %ID/g), being in the same range as for the 89Zr-labeled controls (B12-8D3). Autoradiography of [89Zr]Zr-DFO*-NCS-Adu-8D3 and [125I]I-Adu-8D3 showed an amyloid-beta related granular uptake pattern of radioactivity. In contrast, the [89Zr]Zr-DFO-conjugates and the control antibody groups did not show any amyloid-beta related uptake pattern, indicating that DFO is inferior for 89Zr-immuno-PET imaging of the brain in comparison to DFO* for Adu-8D3. This was confirmed by day 7 PET images showing only amyloid-beta related brain uptake for [89Zr]Zr-DFO*-NCS-Adu-8D3. In wild type animals, such an uptake was not observed. Immunostaining showed a co-localization of all administered Adu-8D3 conjugates with amyloid-beta plaques. Conclusion: We successfully demonstrated that 89Zr-immuno-PET is suitable for imaging and quantifying amyloid-beta specific brain uptake using a bispecific aducanumab brain shuttling antibody, Adu-8D3, but only when using the novel chelator DFO*, and not DFO, for labeling with 89Zr.
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Affiliation(s)
- Thomas E Wuensche
- Amsterdam UMC location Vrije Universiteit Amsterdam, dept Radiology & Nuclear Medicine, De Boelelaan 1117, Amsterdam, The Netherlands
| | - Natascha Stergiou
- Amsterdam UMC location Vrije Universiteit Amsterdam, dept Radiology & Nuclear Medicine, De Boelelaan 1117, Amsterdam, The Netherlands
| | - Iris Mes
- Amsterdam UMC location Vrije Universiteit Amsterdam, dept Radiology & Nuclear Medicine, De Boelelaan 1117, Amsterdam, The Netherlands
| | - Mariska Verlaan
- Amsterdam UMC location Vrije Universiteit Amsterdam, dept Radiology & Nuclear Medicine, De Boelelaan 1117, Amsterdam, The Netherlands
| | - Maxime Schreurs
- Amsterdam UMC location Vrije Universiteit Amsterdam, dept Radiology & Nuclear Medicine, De Boelelaan 1117, Amsterdam, The Netherlands
| | - Esther J M Kooijman
- Amsterdam UMC location Vrije Universiteit Amsterdam, dept Radiology & Nuclear Medicine, De Boelelaan 1117, Amsterdam, The Netherlands
| | - Bart Janssen
- Amsterdam UMC location Vrije Universiteit Amsterdam, dept Radiology & Nuclear Medicine, De Boelelaan 1117, Amsterdam, The Netherlands
| | - Albert D Windhorst
- Amsterdam UMC location Vrije Universiteit Amsterdam, dept Radiology & Nuclear Medicine, De Boelelaan 1117, Amsterdam, The Netherlands.,Amsterdam Neuroscience, Brain imaging, Amsterdam, The Netherlands
| | - Allan Jensen
- H. Lundbeck A/S, Ottiliavej 9, 2500 Valby, Denmark
| | | | | | - Wissam Beaino
- Amsterdam UMC location Vrije Universiteit Amsterdam, dept Radiology & Nuclear Medicine, De Boelelaan 1117, Amsterdam, The Netherlands.,Amsterdam Neuroscience, Brain imaging, Amsterdam, The Netherlands
| | - Guus A M S Dongen
- Amsterdam UMC location Vrije Universiteit Amsterdam, dept Radiology & Nuclear Medicine, De Boelelaan 1117, Amsterdam, The Netherlands.,Amsterdam Neuroscience, Brain imaging, Amsterdam, The Netherlands
| | - Danielle J Vugts
- Amsterdam UMC location Vrije Universiteit Amsterdam, dept Radiology & Nuclear Medicine, De Boelelaan 1117, Amsterdam, The Netherlands.,Amsterdam Neuroscience, Brain imaging, Amsterdam, The Netherlands
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5
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Wuensche T, Stergiou N, Mes I, Verlaan M, Schreurs M, Kooijman E, Janssen B, Windhorst A, Christensen S, Jensen A, Asuni A, Bang-Andersen B, Beaino W, van Dongen G, Vugts D. Development of 89Zr-antibody-PET imaging to evaluate improved brain targeting via transferrin receptor 1: the chelator matters. Nucl Med Biol 2022. [DOI: 10.1016/s0969-8051(22)00092-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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6
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Stergiou N, Wünsche T, Mes I, Schreurs M, Verlaan M, Kooijman E, Windhorst AD, Dongen GAMS, Helboe L, Vergo S, Christensen S, Asuni AA, Jensen A, Bang‐Andersen B, Vugts D, Beaino W. Visualization of brain targets with
89
Zr‐immuno‐PET using a novel bispecific amyloid ß monoclonal antibody. Alzheimers Dement 2021. [DOI: 10.1002/alz.053052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
| | | | - Iris Mes
- Amsterdam UMC, VU University Amsterdam Netherlands
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7
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Stergiou N, Urschbach M, Gabba A, Schmitt E, Kunz H, Besenius P. The Development of Vaccines from Synthetic Tumor-Associated Mucin Glycopeptides and their Glycosylation-Dependent Immune Response. CHEM REC 2021; 21:3313-3331. [PMID: 34812564 DOI: 10.1002/tcr.202100182] [Citation(s) in RCA: 13] [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: 07/05/2021] [Revised: 10/31/2021] [Accepted: 11/02/2021] [Indexed: 12/15/2022]
Abstract
Tumor-associated carbohydrate antigens are overexpressed as altered-self in most common epithelial cancers. Their glycosylation patterns differ from those of healthy cells, functioning as an ID for cancer cells. Scientists have been developing anti-cancer vaccines based on mucin glycopeptides, yet the interplay of delivery system, adjuvant and tumor associated MUC epitopes in the induced immune response is not well understood. The current state of the art suggests that the identity, abundancy and location of the glycans on the MUC backbone are all key parameters in the cellular and humoral response. This review shares lessons learned by us in over two decades of research in glycopeptide vaccines. By bridging synthetic chemistry and immunology, we discuss efforts in designing synthetic MUC1/4/16 vaccines and focus on the role of glycosylation patterns. We provide a brief introduction into the mechanisms of the immune system and aim to promote the development of cancer subunit vaccines.
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Affiliation(s)
- Natascha Stergiou
- Radionuclide Center, Radiology and Nuclear medicine Amsterdam UMC, VU University, De Boelelaan 1085c, 1081 HV, Amsterdam, the Netherlands
| | - Moritz Urschbach
- Department of Chemistry, Johannes Gutenberg University Mainz, Duesbergweg 10-14, 55128, Mainz, Germany
| | - Adele Gabba
- Department of Chemistry, Johannes Gutenberg University Mainz, Duesbergweg 10-14, 55128, Mainz, Germany
| | - Edgar Schmitt
- Institute of Immunology, University Medical Center Mainz, Langenbeckstr. 1, 55131, Mainz, Germany
| | - Horst Kunz
- Department of Chemistry, Johannes Gutenberg University Mainz, Duesbergweg 10-14, 55128, Mainz, Germany
| | - Pol Besenius
- Department of Chemistry, Johannes Gutenberg University Mainz, Duesbergweg 10-14, 55128, Mainz, Germany
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8
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Stergiou N, Wünsche E, Mes I, Schreurs M, Verlaan M, Kooijman E, Windhorst A, Dongen G, Helboe L, Vergo S, Christensen S, Asuni A, Jensen A, Bang-Andersen B, Vugts D, Beaino W. Corrigendum to “SSP-27: 89Zr-immuno-PET of a novel bispecific amyloid β monoclonal antibody reveals improved and high specific brain uptake” [Nucl Med Biol (2020) Volumes 96–97, Supplement. S30-S31]. Nucl Med Biol 2021. [DOI: 10.1016/j.nucmedbio.2021.05.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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9
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Stergiou N, Wünsche T, Mes I, Schreurs M, Verlaan M, Kooijman E, Windhorst A, van Dongen G, Helboe L, Vergo S, Christensen S, Asuni A, Jensen A, Bang-Andersen B, Vugts D, Beaino W. 89Zr-immuno-PET of a novel bispecific amyloid-β monoclonal antibody reveals improved and high specific brain uptake. Nucl Med Biol 2021. [DOI: 10.1016/s0969-8051(21)00314-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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10
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Heimes AS, Fries P, Stergiou N, Attariya R, Hasenburg A, Schmidt M, Schmitt E, Brenner W. (TA)MUC1 as a potential new target for breast cancer therapy. Geburtshilfe Frauenheilkd 2020. [DOI: 10.1055/s-0040-1718204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
Affiliation(s)
- AS Heimes
- Universitätsmedizin der Johannes Gutenberg-Universität Mainz, Klinik und Poliklinik für Geburtshilfe und Frauengesundheit
| | - P Fries
- Universitätsmedizin der Johannes Gutenberg-Universität Mainz, Klinik und Poliklinik für Geburtshilfe und Frauengesundheit
| | - N Stergiou
- UMC, VU University, Radiology and Nuclear Medicine, Radionuclide Center
| | - R Attariya
- Universitätsmedizin der Johannes Gutenberg-Universität Mainz, Institut für Immunologie
| | - A Hasenburg
- Universitätsmedizin der Johannes Gutenberg-Universität Mainz, Klinik und Poliklinik für Geburtshilfe und Frauengesundheit
| | - M Schmidt
- Universitätsmedizin der Johannes Gutenberg-Universität Mainz, Klinik und Poliklinik für Geburtshilfe und Frauengesundheit
| | - E Schmitt
- Universitätsmedizin der Johannes Gutenberg-Universität Mainz, Institut für Immunologie
| | - W Brenner
- Universitätsmedizin der Johannes Gutenberg-Universität Mainz, Klinik und Poliklinik für Geburtshilfe und Frauengesundheit
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11
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Kotál J, Stergiou N, Buša M, Chlastáková A, Beránková Z, Řezáčová P, Langhansová H, Schwarz A, Calvo E, Kopecký J, Mareš M, Schmitt E, Chmelař J, Kotsyfakis M. The structure and function of Iristatin, a novel immunosuppressive tick salivary cystatin. Cell Mol Life Sci 2019; 76:2003-2013. [PMID: 30747251 DOI: 10.1007/s00018-019-03034-3] [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: 11/29/2018] [Revised: 01/14/2019] [Accepted: 01/28/2019] [Indexed: 12/31/2022]
Abstract
To successfully feed, ticks inject pharmacoactive molecules into the vertebrate host including cystatin cysteine protease inhibitors. However, the molecular and cellular events modulated by tick saliva remain largely unknown. Here, we describe and characterize a novel immunomodulatory cystatin, Iristatin, which is upregulated in the salivary glands of feeding Ixodes ricinus ticks. We present the crystal structure of Iristatin at 1.76 Å resolution. Purified recombinant Iristatin inhibited the proteolytic activity of cathepsins L and C and diminished IL-2, IL-4, IL-9, and IFN-γ production by different T-cell populations, IL-6 and IL-9 production by mast cells, and nitric oxide production by macrophages. Furthermore, Iristatin inhibited OVA antigen-induced CD4+ T-cell proliferation and leukocyte recruitment in vivo and in vitro. Our results indicate that Iristatin affects wide range of anti-tick immune responses in the vertebrate host and may be exploitable as an immunotherapeutic.
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Affiliation(s)
- Jan Kotál
- Laboratory of Genomics and Proteomics of Disease Vectors, Biology Centre CAS, Institute of Parasitology, Branišovská 1160/31, 37005, České Budějovice, Czech Republic.,Department of Medical Biology, Faculty of Science, University of South Bohemia in České Budějovice, Branišovská 1760c, 37005, České Budějovice, Czech Republic
| | - Natascha Stergiou
- Institute for Immunology, University Medical Center of the Johannes Gutenberg-University Mainz, Langenbeckstrasse 1, Mainz, 55131, Germany
| | - Michal Buša
- Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo nám. 2, 16610, Prague, Czech Republic
| | - Adéla Chlastáková
- Department of Medical Biology, Faculty of Science, University of South Bohemia in České Budějovice, Branišovská 1760c, 37005, České Budějovice, Czech Republic
| | - Zuzana Beránková
- Department of Medical Biology, Faculty of Science, University of South Bohemia in České Budějovice, Branišovská 1760c, 37005, České Budějovice, Czech Republic
| | - Pavlína Řezáčová
- Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo nám. 2, 16610, Prague, Czech Republic
| | - Helena Langhansová
- Department of Medical Biology, Faculty of Science, University of South Bohemia in České Budějovice, Branišovská 1760c, 37005, České Budějovice, Czech Republic
| | - Alexandra Schwarz
- Laboratory of Genomics and Proteomics of Disease Vectors, Biology Centre CAS, Institute of Parasitology, Branišovská 1160/31, 37005, České Budějovice, Czech Republic
| | - Eric Calvo
- Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, 12735 Twinbrook Parkway, Rockville, MD, 20852, USA
| | - Jan Kopecký
- Department of Medical Biology, Faculty of Science, University of South Bohemia in České Budějovice, Branišovská 1760c, 37005, České Budějovice, Czech Republic
| | - Michael Mareš
- Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo nám. 2, 16610, Prague, Czech Republic
| | - Edgar Schmitt
- Institute for Immunology, University Medical Center of the Johannes Gutenberg-University Mainz, Langenbeckstrasse 1, Mainz, 55131, Germany
| | - Jindřich Chmelař
- Department of Medical Biology, Faculty of Science, University of South Bohemia in České Budějovice, Branišovská 1760c, 37005, České Budějovice, Czech Republic
| | - Michail Kotsyfakis
- Laboratory of Genomics and Proteomics of Disease Vectors, Biology Centre CAS, Institute of Parasitology, Branišovská 1160/31, 37005, České Budějovice, Czech Republic.
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12
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Stergiou N, Nagel J, Pektor S, Heimes AS, Jäkel J, Brenner W, Schmidt M, Miederer M, Kunz H, Roesch F, Schmitt E. Evaluation of a novel monoclonal antibody against tumor-associated MUC1 for diagnosis and prognosis of breast cancer. Int J Med Sci 2019; 16:1188-1198. [PMID: 31588183 PMCID: PMC6775261 DOI: 10.7150/ijms.35452] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [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] [Received: 04/24/2019] [Accepted: 07/09/2019] [Indexed: 12/25/2022] Open
Abstract
There is still a great unmet medical need concerning diagnosis and treatment of breast cancer which could be addressed by utilizing specific molecular targets. Tumor-associated MUC1 is expressed on over 90 % of all breast cancer entities and differs strongly from its physiological form on epithelial cells, therefore presenting a unique target for breast cancer diagnosis and antibody-mediated immune therapy. Utilizing an anti-tumor vaccine based on a synthetically prepared glycopeptide, we generated a monoclonal antibody (mAb) GGSK-1/30, selectively recognizing human tumor-associated MUC1. This antibody targets exclusively tumor-associated MUC1 in the absence of any binding to MUC1 on healthy epithelial cells thus enabling the generation of breast tumor-specific radiolabeled immune therapeutic tools. Methods: MAb GGSK-1/30 was used for immunohistochemical analysis of human breast cancer tissue. Its desferrioxamine (Df')-conjugate was synthesized and labelled with 89Zr. [89Zr]Zr-Df'-GGSK-1/30 was evaluated as a potential PET tracer. Binding and pharmacokinetic properties of [89Zr]Zr-Df'-GGSK-1/30 were analyzed in vitro using human and murine cell lines that express tumor-associated MUC1. Self-generated primary murine breast cancer cells expressing human tumor-associated MUC1 were transplanted subcutaneously in wild type and human MUC1-transgenic mice. The pharmacology of [89Zr]Zr-Df'-GGSK-1/30 was investigated using breast tumor-bearing mice in vivo by PET/MRT imaging as well as by ex vivo organ biodistribution analysis. Results: The mAb GGSK-1/30 stained specifically human breast tumor tissue and can be possibly used to predict the severity of disease progression based on the expression of the tumor-associated MUC1. For in vivo imaging, the Df'-conjugated mAb was radiolabeled with a radiochemical yield of 60 %, a radiochemical purity of 95 % and an apparent specific activity of 6.1 GBq/µmol. After 7 d, stabilities of 84 % in human serum and of 93 % in saline were observed. In vitro cell studies showed strong binding to human tumor-associated MUC1 expressing breast cancer cells. The breast tumor-bearing mice showed an in vivo tumor uptake of >50 %ID/g and clearly visible specific enrichment of the radioconjugate via PET/MRT. Principal conclusions: Tumor-associated MUC1 is a very important biomarker for breast cancer next to the traditional markers estrogen receptor (ER), progesterone receptor (PR) and HER/2-neu. The mAb GGSK-1/30 can be used for the diagnosis of over 90% of breast cancers, including triple negative breast cancer based on biopsy staining. Its radioimmunoconjugate represents a promising PET-tracer for breast cancer imaging selectively targeting breast cancer cells.
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Affiliation(s)
| | - Johannes Nagel
- Institute for Nuclear chemistry, Johannes-Gutenberg University
| | - Stefanie Pektor
- Clinic and Polyclinic for Nuclear Medicine, University Medical Center
| | - Anne-Sophie Heimes
- Department of Obstetrics and Women's Health, University Medical Center, Johannes Gutenberg-University, Germany
| | - Jörg Jäkel
- Department of Pathology, University Medical Center
| | - Walburgis Brenner
- Department of Obstetrics and Women's Health, University Medical Center, Johannes Gutenberg-University, Germany
| | - Marcus Schmidt
- Department of Obstetrics and Women's Health, University Medical Center, Johannes Gutenberg-University, Germany
| | - Matthias Miederer
- Clinic and Polyclinic for Nuclear Medicine, University Medical Center
| | - Horst Kunz
- Institute for Organic Chemistry, Johannes-Gutenberg University
| | - Frank Roesch
- Institute for Nuclear chemistry, Johannes-Gutenberg University
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13
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Raffalt PC, Vallabhajosula S, Renz JJ, Mukherjee M, Stergiou N. Lower limb joint angle variability and dimensionality are different in stairmill climbing and treadmill walking. R Soc Open Sci 2018; 5:180996. [PMID: 30662723 PMCID: PMC6304153 DOI: 10.1098/rsos.180996] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [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: 06/20/2018] [Accepted: 10/18/2018] [Indexed: 06/09/2023]
Abstract
The present study tested if the quadratic relationship which exists between stepping frequency and gait dynamics in walking can be generalized to stairmill climbing. To accomplish this, we investigated the joint angle dynamics and variability during continuous stairmill climbing at stepping frequencies both above and below the preferred stepping frequency (PSF). Nine subjects performed stairmill climbing at 80, 90, 100, 110 and 120% PSF and treadmill walking at preferred walking speed during which sagittal hip, knee and ankle angles were extracted. Joint angle dynamics were quantified by the largest Lyapunov exponent (LyE) and correlation dimension (CoD). Joint angle variability was estimated by the mean ensemble standard deviation (meanSD). MeanSD and CoD for all joints were significantly higher during stairmill climbing but there were no task differences in LyE. Changes in stepping frequency had only limited effect on joint angle variability and did not affect joint angle dynamics. Thus, we concluded that the quadratic relationship between stepping frequency and gait dynamics observed in walking is not present in stairmill climbing based on the investigated parameters.
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Affiliation(s)
- P. C. Raffalt
- Julius Wolff Institute for Biomechanics and Musculoskeletal Regeneration, Charité – Universitätsmedizin Berlin, Berlin, Germany
- Department of Biomedical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - S. Vallabhajosula
- Department of Physical Therapy Education, School of Health Sciences, Elon University, Elon, NC, USA
| | - J. J. Renz
- Department of Biomechanics, College of Education, University of Nebraska Medical Center, Omaha, NE, USA
| | - M. Mukherjee
- Department of Biomechanics, College of Education, University of Nebraska Medical Center, Omaha, NE, USA
| | - N. Stergiou
- Department of Biomechanics, College of Education, University of Nebraska Medical Center, Omaha, NE, USA
- Department of Environmental Agricultural and Occupational Health, College of Public Health, University of Nebraska Medical Center, Omaha, NE, USA
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14
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Stergiou N, Gaidzik N, Heimes AS, Dietzen S, Besenius P, Jäkel J, Brenner W, Schmidt M, Kunz H, Schmitt E. Reduced Breast Tumor Growth after Immunization with a Tumor-Restricted MUC1 Glycopeptide Conjugated to Tetanus Toxoid. Cancer Immunol Res 2018; 7:113-122. [PMID: 30413430 DOI: 10.1158/2326-6066.cir-18-0256] [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: 04/17/2018] [Revised: 08/07/2018] [Accepted: 11/05/2018] [Indexed: 11/16/2022]
Abstract
Preventive vaccination against tumor-associated endogenous antigens is considered to be an attractive strategy for the induction of a curative immune response concomitant with a long-lasting immunologic memory. The mucin MUC1 is a promising tumor antigen, as its tumor-associated form differs from the glycoprotein form expressed on healthy cells. Due to aberrant glycosylation in tumor cells, the specific peptide epitopes in its backbone are accessible and can be bound by antibodies induced by vaccination. Breast cancer patients develop per se only low levels of T cells and antibodies recognizing tumor-associated MUC1, and clinical trials with tumor-associated MUC1 yielded unsatisfactory therapeutic effects, indicating an urgent need to improve humoral immunity against this tumor entity. Herein, we demonstrate that preventive vaccination against tumor-associated human MUC1 results in a specific humoral immune response, a slowdown of tumor progression and an increase in survival of breast tumor-bearing mice. For preventive vaccination, we used a synthetic vaccine containing a tumor-associated glycopeptide structure of human MUC1 coupled to Tetanus Toxoid. The glycopeptide consists of a 22mer huMUC1 peptide with two immune dominant regions (PDTR and GSTA), glycosylated with the sialylated carbohydrate STN on serine-17. PyMT (polyomavirus middle T-antigen) and human MUC1 double-transgenic mice expressing human tumor-associated MUC1 on breast tumor tissue served as a preclinical breast cancer model.
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Affiliation(s)
- Natascha Stergiou
- Institute of Immunology, University Medical Center, Johannes Gutenberg-University, Mainz, Germany
| | - Nikola Gaidzik
- Institute of Organic Chemistry, Johannes Gutenberg-University, Mainz, Germany
| | - Anne-Sophie Heimes
- Department of Obstetrics and Women's Health, University Medical Center, Johannes Gutenberg-University, Mainz, Germany
| | - Sarah Dietzen
- Institute of Immunology, University Medical Center, Johannes Gutenberg-University, Mainz, Germany
| | - Pol Besenius
- Institute of Organic Chemistry, Johannes Gutenberg-University, Mainz, Germany
| | - Jörg Jäkel
- Institute of Pathology, University Medical Center, Johannes Gutenberg-University, Mainz, Germany
| | - Walburgis Brenner
- Department of Obstetrics and Women's Health, University Medical Center, Johannes Gutenberg-University, Mainz, Germany
| | - Marcus Schmidt
- Department of Obstetrics and Women's Health, University Medical Center, Johannes Gutenberg-University, Mainz, Germany
| | - Horst Kunz
- Institute of Organic Chemistry, Johannes Gutenberg-University, Mainz, Germany
| | - Edgar Schmitt
- Institute of Immunology, University Medical Center, Johannes Gutenberg-University, Mainz, Germany.
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15
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Straßburger D, Stergiou N, Urschbach M, Yurugi H, Spitzer D, Schollmeyer D, Schmitt E, Besenius P. Cover Feature: Mannose-Decorated Multicomponent Supramolecular Polymers Trigger Effective Uptake into Antigen-Presenting Cells (ChemBioChem 9/2018). Chembiochem 2018. [DOI: 10.1002/cbic.201800191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- David Straßburger
- Institute of Organic Chemistry; Johannes Gutenberg-University Mainz; Duesbergweg 10-14 55128 Mainz Germany
| | - Natascha Stergiou
- Institute of Immunology; University Medical Center Mainz; Langenbeckstrasse 1, Gebäude 708 55131 Mainz Germany
| | - Moritz Urschbach
- Institute of Organic Chemistry; Johannes Gutenberg-University Mainz; Duesbergweg 10-14 55128 Mainz Germany
| | - Hajime Yurugi
- Molecular Signaling Unit-FZI; Research Center for Immune Therapy; University Medical Center Mainz; Langenbeckstrasse 1, Gebäude 708 55131 Mainz Germany
| | - Daniel Spitzer
- Institute of Organic Chemistry; Johannes Gutenberg-University Mainz; Duesbergweg 10-14 55128 Mainz Germany
| | - Dieter Schollmeyer
- Institute of Organic Chemistry; Johannes Gutenberg-University Mainz; Duesbergweg 10-14 55128 Mainz Germany
| | - Edgar Schmitt
- Institute of Immunology; University Medical Center Mainz; Langenbeckstrasse 1, Gebäude 708 55131 Mainz Germany
| | - Pol Besenius
- Institute of Organic Chemistry; Johannes Gutenberg-University Mainz; Duesbergweg 10-14 55128 Mainz Germany
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16
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Straßburger D, Stergiou N, Urschbach M, Yurugi H, Spitzer D, Schollmeyer D, Schmitt E, Besenius P. Mannose-Decorated Multicomponent Supramolecular Polymers Trigger Effective Uptake into Antigen-Presenting Cells. Chembiochem 2018; 19:912-916. [PMID: 29486092 DOI: 10.1002/cbic.201800114] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Indexed: 11/05/2022]
Abstract
A modular route to prepare functional self-assembling dendritic peptide amphiphiles decorated with mannosides, to effectively target antigen-presenting cells, such as macrophages, is reported. The monomeric building blocks were equipped with tetra(ethylene glycol)s (TEGs) or labeled with a Cy3 fluorescent probe. Experiments on the uptake of the multifunctional supramolecular particles into murine macrophages (Mφs) were monitored by confocal microscopy and fluorescence-activated cell sorting. Mannose-decorated supramolecular polymers trigger a significantly higher cellular uptake and distribution, relative to TEG carrying bare polymers. No cytotoxicity or negative impact on cytokine production of the treated Mφs was observed, which emphasized their biocompatibility. The modular nature of the multicomponent supramolecular polymer coassembly protocol is a promising platform to develop fully synthetic multifunctional vaccines, for example, in cancer immunotherapy.
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Affiliation(s)
- David Straßburger
- Institute of Organic Chemistry, Johannes Gutenberg-University Mainz, Duesbergweg 10-14, 55128, Mainz, Germany
| | - Natascha Stergiou
- Institute of Immunology, University Medical Center Mainz, Langenbeckstrasse 1, Gebäude 708, 55131, Mainz, Germany
| | - Moritz Urschbach
- Institute of Organic Chemistry, Johannes Gutenberg-University Mainz, Duesbergweg 10-14, 55128, Mainz, Germany
| | - Hajime Yurugi
- Molecular Signaling Unit-FZI, Research Center for Immune Therapy, University Medical Center Mainz, Langenbeckstrasse 1, Gebäude 708, 55131, Mainz, Germany
| | - Daniel Spitzer
- Institute of Organic Chemistry, Johannes Gutenberg-University Mainz, Duesbergweg 10-14, 55128, Mainz, Germany
| | - Dieter Schollmeyer
- Institute of Organic Chemistry, Johannes Gutenberg-University Mainz, Duesbergweg 10-14, 55128, Mainz, Germany
| | - Edgar Schmitt
- Institute of Immunology, University Medical Center Mainz, Langenbeckstrasse 1, Gebäude 708, 55131, Mainz, Germany
| | - Pol Besenius
- Institute of Organic Chemistry, Johannes Gutenberg-University Mainz, Duesbergweg 10-14, 55128, Mainz, Germany
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17
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Straßburger D, Glaffig M, Stergiou N, Bialas S, Besenius P, Schmitt E, Kunz H. Synthetic MUC1 Antitumor Vaccine with Incorporated 2,3-Sialyl-T Carbohydrate Antigen Inducing Strong Immune Responses with Isotype Specificity. Chembiochem 2018; 19:1142-1146. [PMID: 29633523 DOI: 10.1002/cbic.201800148] [Citation(s) in RCA: 12] [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] [Subscribe] [Scholar Register] [Received: 03/17/2018] [Indexed: 11/10/2022]
Abstract
The endothelial glycoprotein MUC1 is known to underlie alterations in cancer by means of aberrant glycosylation accompanied by changes in morphology. The heavily shortened glycans induce a collapse of the peptide backbone and enable accessibility of the latter to immune cells, rendering it a tumor-associated antigen. Synthetic vaccines based on MUC1 tandem repeat motifs, comprising tumor-associated 2,3-sialyl-T antigen, conjugated to the immunostimulating tetanus toxoid, are reported herein. Immunization with these vaccines in a simple water/oil emulsion produced a strong immune response in mice to which stimulation with complete Freund's adjuvant (CFA) was not superior. In both cases, high levels of IgG1 and IgG2a/b were induced in C57BL/6 mice. Additional glycosylation in the immunodominant PDTRP domain led to improved binding of the induced antisera to MCF-7 breast tumor cells, compared with that of the monoglycosylated peptide vaccine.
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Affiliation(s)
- David Straßburger
- Institut für Organische Chemie, Johannes Gutenberg-Universität Mainz, Duesbergweg 10-14, 55128, Mainz, Germany
| | - Markus Glaffig
- Institut für Organische Chemie, Johannes Gutenberg-Universität Mainz, Duesbergweg 10-14, 55128, Mainz, Germany
| | - Natascha Stergiou
- Institut für Immunologie, Johannes Gutenberg-Universität Mainz, Obere Zahlbacher Strasse 67, 55101, Mainz, Germany
| | - Sabrina Bialas
- Institut für Organische Chemie, Johannes Gutenberg-Universität Mainz, Duesbergweg 10-14, 55128, Mainz, Germany
| | - Pol Besenius
- Institut für Organische Chemie, Johannes Gutenberg-Universität Mainz, Duesbergweg 10-14, 55128, Mainz, Germany
| | - Edgar Schmitt
- Institut für Immunologie, Johannes Gutenberg-Universität Mainz, Obere Zahlbacher Strasse 67, 55101, Mainz, Germany
| | - Horst Kunz
- Institut für Organische Chemie, Johannes Gutenberg-Universität Mainz, Duesbergweg 10-14, 55128, Mainz, Germany
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18
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Glaffig M, Stergiou N, Hartmann S, Schmitt E, Kunz H. A Synthetic MUC1 Anticancer Vaccine Containing Mannose Ligands for Targeting Macrophages and Dendritic Cells. ChemMedChem 2017; 13:25-29. [PMID: 29193802 DOI: 10.1002/cmdc.201700646] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2017] [Revised: 11/27/2017] [Indexed: 01/28/2023]
Abstract
A MUC1 anticancer vaccine equipped with covalently linked divalent mannose ligands was found to improve the antigen uptake and presentation by targeting mannose-receptor-positive macrophages and dendritic cells. It induced much stronger specific IgG immune responses in mice than the non-mannosylated reference vaccine. Mannose coupling also led to increased numbers of macrophages, dendritic cells, and CD4+ T cells in the local lymph organs. Comparison of di- and tetravalent mannose ligands revealed an increased binding of the tetravalent version, suggesting that higher valency improves binding to the mannose receptor. The mannose-coupled vaccine and the non-mannosylated reference vaccine induced IgG antibodies that exhibited similar binding to human breast tumor cells.
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Affiliation(s)
- Markus Glaffig
- Johannes Gutenberg University Mainz, Institute of Organic Chemistry, Duesbergweg 10-14, 55128, Mainz, Germany
| | - Natascha Stergiou
- Johannes Gutenberg University Mainz, University Medical Center Institute of Immunology, Langenbeckstraße 1, Building 708, 55131, Mainz, Germany
| | - Sebastian Hartmann
- Johannes Gutenberg University Mainz, Institute of Organic Chemistry, Duesbergweg 10-14, 55128, Mainz, Germany
| | - Edgar Schmitt
- Johannes Gutenberg University Mainz, University Medical Center Institute of Immunology, Langenbeckstraße 1, Building 708, 55131, Mainz, Germany
| | - Horst Kunz
- Johannes Gutenberg University Mainz, Institute of Organic Chemistry, Duesbergweg 10-14, 55128, Mainz, Germany
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19
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Wurdeman SR, Raffalt PC, Stergiou N. Reduced vertical displacement of the center of mass is not accompanied by reduced oxygen uptake during walking. Sci Rep 2017; 7:17182. [PMID: 29215063 PMCID: PMC5719393 DOI: 10.1038/s41598-017-17532-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2017] [Accepted: 11/23/2017] [Indexed: 11/09/2022] Open
Abstract
The six determinants of gait proposed that the goal of gait is to minimize vertical displacement of the body’s center of mass (CoM) with the objective to optimize energy expenditure. On the contrary, recent investigations suggest that reduced vertical displacement leads to an increase in energy expenditure. However, these investigations had the included subjects deliberately changing their gait, which could bias the endpoint measures. The present study investigated the effect of reduced vertical displacement of the CoM on oxygen uptake and walking economy without imposing altered gait patterns. This was accomplished by having subjects walk on a curved treadmill and on a flat treadmill. Vertical displacement of the CoM (sacrum marker displacement), oxygen uptake, walking economy, stride characteristics and lower limb joint angles were measured. There were significant differences in stride characteristics and phase dependent differences in lower limb movement pattern between the two conditions which in size were comparable to the changes observed between different speeds. The vertical displacement of the CoM was significantly reduced on the curved treadmill. This was accompanied by an increase in oxygen uptake and walking economy. These results support recent assertions that the six determinants of gait do not serve to improve walking economy.
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Affiliation(s)
- S R Wurdeman
- Department of Clinical and Scientific Affairs, Hanger Clinic, 11155S, Main St., Houston, TX, 77025, USA.,Department of Biomechanics and Center for Research in Human Movement Variability, University of Nebraska at Omaha, 6160 University Drive, Omaha, NE, 68182-0860, USA
| | - P C Raffalt
- Julius Wolff Institute for Biomechanics and Musculoskeletal Regeneration, Charité - Universitätsmedizin Berlin, Augustenburger Platz 1, 13353, Berlin, Germany.,Department of Biomedical Sciences, University of Copenhagen, Blegdamsvej 3B, 2200, Copenhagen N, Denmark
| | - N Stergiou
- Department of Biomechanics and Center for Research in Human Movement Variability, University of Nebraska at Omaha, 6160 University Drive, Omaha, NE, 68182-0860, USA. .,College of Public Health, 984355 University of Nebraska Medical Center, Omaha, NE, 68198-4355, USA.
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20
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Stergiou N, Glaffig M, Jonuleit H, Schmitt E, Kunz H. Immunization with a Synthetic Human MUC1 Glycopeptide Vaccine against Tumor‐Associated MUC1 Breaks Tolerance in Human MUC1 Transgenic Mice. ChemMedChem 2017; 12:1424-1428. [DOI: 10.1002/cmdc.201700387] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2017] [Indexed: 11/09/2022]
Affiliation(s)
- Natascha Stergiou
- Johannes Gutenberg University MainzUniversity Medical Center – Institute of Immunology Langenbeckstraße 1, Building 708 55131 Mainz Germany
| | - Markus Glaffig
- Johannes Gutenberg University MainzInstitute of Organic Chemistry Duesbergweg 10–14 55128 Mainz Germany
| | - Helmut Jonuleit
- Johannes Gutenberg University MainzUniversity Medical Center – Dermatology Langenbeckstraße 1, Building 401 55116 Mainz Germany
| | - Edgar Schmitt
- Johannes Gutenberg University MainzUniversity Medical Center – Institute of Immunology Langenbeckstraße 1, Building 708 55131 Mainz Germany
| | - Horst Kunz
- Johannes Gutenberg University MainzInstitute of Organic Chemistry Duesbergweg 10–14 55128 Mainz Germany
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21
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Klinker K, Schäfer O, Huesmann D, Bauer T, Capelôa L, Braun L, Stergiou N, Schinnerer M, Dirisala A, Miyata K, Osada K, Cabral H, Kataoka K, Barz M. Sekundärstrukturbildung als Triebkraft für die Selbstorganisation reaktiver Polypept(o)ide: Steuerung von Größe, Form und Funktion kernvernetzter Nanostrukturen. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201702624] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Kristina Klinker
- Institut für Organische Chemie; Johannes Gutenberg-Universität Mainz; Duesbergweg 10-14 55128 Mainz Deutschland
- Graduiertenschule MAterials Science IN MainZ; Deutschland
| | - Olga Schäfer
- Institut für Organische Chemie; Johannes Gutenberg-Universität Mainz; Duesbergweg 10-14 55128 Mainz Deutschland
| | - David Huesmann
- Institut für Organische Chemie; Johannes Gutenberg-Universität Mainz; Duesbergweg 10-14 55128 Mainz Deutschland
| | - Tobias Bauer
- Institut für Organische Chemie; Johannes Gutenberg-Universität Mainz; Duesbergweg 10-14 55128 Mainz Deutschland
| | - Leon Capelôa
- Institut für Organische Chemie; Johannes Gutenberg-Universität Mainz; Duesbergweg 10-14 55128 Mainz Deutschland
| | - Lydia Braun
- Institut für Organische Chemie; Johannes Gutenberg-Universität Mainz; Duesbergweg 10-14 55128 Mainz Deutschland
| | - Natascha Stergiou
- Universitätsmedizin Mainz - Institut für Immunologie; Johannes Gutenberg-Universität Mainz; Deutschland
| | - Meike Schinnerer
- Institut für Organische Chemie; Johannes Gutenberg-Universität Mainz; Duesbergweg 10-14 55128 Mainz Deutschland
| | - Anjaneyulu Dirisala
- Innovation Center of NanoMedicine; KAWASAKI Institute of Industrial Promotion; Kawasaki 210-0821 Japan
| | - Kanjiro Miyata
- Department of Materials Engineering, Graduate School of Engineering; The University of Tokyo; Japan
| | - Kensuke Osada
- Department of Bioengineering, Graduate School of Engineering; The University of Tokyo; Japan
| | - Horacio Cabral
- Department of Bioengineering, Graduate School of Engineering; The University of Tokyo; Japan
| | - Kazunori Kataoka
- Innovation Center of NanoMedicine; KAWASAKI Institute of Industrial Promotion; Kawasaki 210-0821 Japan
- Policy Alternatives Research Institute; The University of Tokyo; Japan
| | - Matthias Barz
- Institut für Organische Chemie; Johannes Gutenberg-Universität Mainz; Duesbergweg 10-14 55128 Mainz Deutschland
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22
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Klinker K, Schäfer O, Huesmann D, Bauer T, Capelôa L, Braun L, Stergiou N, Schinnerer M, Dirisala A, Miyata K, Osada K, Cabral H, Kataoka K, Barz M. Secondary-Structure-Driven Self-Assembly of Reactive Polypept(o)ides: Controlling Size, Shape, and Function of Core Cross-Linked Nanostructures. Angew Chem Int Ed Engl 2017; 56:9608-9613. [PMID: 28544124 DOI: 10.1002/anie.201702624] [Citation(s) in RCA: 63] [Impact Index Per Article: 9.0] [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: 03/13/2017] [Revised: 05/12/2017] [Indexed: 12/20/2022]
Abstract
Achieving precise control over the morphology and function of polymeric nanostructures during self-assembly remains a challenge in materials as well as biomedical science, especially when independent control over particle properties is desired. Herein, we report on nanostructures derived from amphiphilic block copolypept(o)ides by secondary-structure-directed self-assembly, presenting a strategy to adjust core polarity and function separately from particle preparation in a bioreversible manner. The peptide-inherent process of secondary-structure formation allows for the synthesis of spherical and worm-like core-cross-linked architectures from the same block copolymer, introducing a simple yet powerful approach to versatile peptide-based core-shell nanostructures.
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Affiliation(s)
- Kristina Klinker
- Institut für Organische Chemie, Johannes Gutenberg-Universität Mainz, Duesbergweg 10-14, 55128, Mainz, Germany
- Graduiertenschule MAterials Science IN MainZ, Germany
| | - Olga Schäfer
- Institut für Organische Chemie, Johannes Gutenberg-Universität Mainz, Duesbergweg 10-14, 55128, Mainz, Germany
| | - David Huesmann
- Institut für Organische Chemie, Johannes Gutenberg-Universität Mainz, Duesbergweg 10-14, 55128, Mainz, Germany
| | - Tobias Bauer
- Institut für Organische Chemie, Johannes Gutenberg-Universität Mainz, Duesbergweg 10-14, 55128, Mainz, Germany
| | - Leon Capelôa
- Institut für Organische Chemie, Johannes Gutenberg-Universität Mainz, Duesbergweg 10-14, 55128, Mainz, Germany
| | - Lydia Braun
- Institut für Organische Chemie, Johannes Gutenberg-Universität Mainz, Duesbergweg 10-14, 55128, Mainz, Germany
| | - Natascha Stergiou
- Universitätsmedizin Mainz, Institut für Immunologie, Johannes Gutenberg-Universität Mainz, Germany
| | - Meike Schinnerer
- Institut für Organische Chemie, Johannes Gutenberg-Universität Mainz, Duesbergweg 10-14, 55128, Mainz, Germany
| | - Anjaneyulu Dirisala
- Innovation Center of NanoMedicine, KAWASAKI Institute of Industrial Promotion, Kawasaki, 210-0821, Japan
| | - Kanjiro Miyata
- Department of Materials Engineering, Graduate School of Engineering, The University of Tokyo, Japan
| | - Kensuke Osada
- Department of Bioengineering, Graduate School of Engineering, The University of Tokyo, Japan
| | - Horacio Cabral
- Department of Bioengineering, Graduate School of Engineering, The University of Tokyo, Japan
| | - Kazunori Kataoka
- Innovation Center of NanoMedicine, KAWASAKI Institute of Industrial Promotion, Kawasaki, 210-0821, Japan
- Policy Alternatives Research Institute, The University of Tokyo, Japan
| | - Matthias Barz
- Institut für Organische Chemie, Johannes Gutenberg-Universität Mainz, Duesbergweg 10-14, 55128, Mainz, Germany
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23
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Affiliation(s)
- W. Denton
- Biomechanics, University of Nebraska at Omaha, Omaha, Nebraska
| | - M. Mukherjee
- Biomechanics, University of Nebraska at Omaha, Omaha, Nebraska
| | - N. Stergiou
- Biomechanics, University of Nebraska at Omaha, Omaha, Nebraska
| | - J. Yentes
- Biomechanics, University of Nebraska at Omaha, Omaha, Nebraska
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Glaffig M, Stergiou N, Schmitt E, Kunz H. Immunogenicity of a Fully Synthetic MUC1 Glycopeptide Antitumor Vaccine Enhanced by Poly(I:C) as a TLR3-Activating Adjuvant. ChemMedChem 2017; 12:722-727. [PMID: 28440596 DOI: 10.1002/cmdc.201700254] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2017] [Indexed: 11/08/2022]
Abstract
Fully synthetic MUC1 glycopeptide antitumor vaccines have a precisely specified structure and induce a targeted immune response without suppression of the immune response when using an immunogenic carrier protein. However, tumor-associated aberrantly glycosylated MUC1 glycopeptides are endogenous structures, "self-antigens", that exhibit only low immunogenicity. To overcome this obstacle, a fully synthetic MUC1 glycopeptide antitumor vaccine was combined with poly(inosinic acid:cytidylic acid), poly(I:C), as a structurally defined Toll-like receptor 3 (TLR3)-activating adjuvant. This vaccine preparation elicited extraordinary titers of IgG antibodies which strongly bound human breast cancer cells expressing tumor-associated MUC1. Beside the humoral response, the poly(I:C) glycopeptide vaccine induced a pro-inflammatory environment, very important to overcome the immune-suppressive mechanisms, and elicited a strong cellular immune response crucial for tumor elimination.
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Affiliation(s)
- Markus Glaffig
- Johannes Gutenberg University Mainz, Institute of Organic Chemistry, Duesbergweg 10-14, 55128, Mainz, Germany
| | - Natascha Stergiou
- Johannes Gutenberg University Mainz, University Medical Center, Institute of Immunology, Langenbeckstrasse 1, Geb. 708, 55101, Mainz, Germany
| | - Edgar Schmitt
- Johannes Gutenberg University Mainz, University Medical Center, Institute of Immunology, Langenbeckstrasse 1, Geb. 708, 55101, Mainz, Germany
| | - Horst Kunz
- Johannes Gutenberg University Mainz, Institute of Organic Chemistry, Duesbergweg 10-14, 55128, Mainz, Germany
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25
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Pett C, Cai H, Liu J, Palitzsch B, Schorlemer M, Hartmann S, Stergiou N, Lu M, Kunz H, Schmitt E, Westerlind U. Inside Back Cover: Microarray Analysis of Antibodies Induced with Synthetic Antitumor Vaccines: Specificity against Diverse Mucin Core Structures (Chem. Eur. J. 16/2017). Chemistry 2017. [DOI: 10.1002/chem.201605998] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Christian Pett
- Gesellschaft zur Förderung der Analytischen Wissenschaften e.V. ISAS-Leibniz Institute for Analytical Sciences; Otto-Hahn-Str. 6b 44227 Dortmund Germany
| | - Hui Cai
- Gesellschaft zur Förderung der Analytischen Wissenschaften e.V. ISAS-Leibniz Institute for Analytical Sciences; Otto-Hahn-Str. 6b 44227 Dortmund Germany
| | - Jia Liu
- Institute for Virology; University Hospital of Essen, University of Duisburg-Essen; Essen Germany
| | - Björn Palitzsch
- Institute of Organic Chemistry; Johannes Gutenberg, University of Mainz; Duesbergweg 10-14 55128 Mainz Germany
| | - Manuel Schorlemer
- Gesellschaft zur Förderung der Analytischen Wissenschaften e.V. ISAS-Leibniz Institute for Analytical Sciences; Otto-Hahn-Str. 6b 44227 Dortmund Germany
| | - Sebastian Hartmann
- Institute of Organic Chemistry; Johannes Gutenberg, University of Mainz; Duesbergweg 10-14 55128 Mainz Germany
| | - Natascha Stergiou
- University Medical Center, Institute of Immunology; Johannes Gutenberg University of Mainz; Langenbeckstr. 1, Geb. 708 55101 Mainz Germany
| | - Mengji Lu
- Institute for Virology; University Hospital of Essen, University of Duisburg-Essen; Essen Germany
| | - Horst Kunz
- Institute of Organic Chemistry; Johannes Gutenberg, University of Mainz; Duesbergweg 10-14 55128 Mainz Germany
| | - Edgar Schmitt
- University Medical Center, Institute of Immunology; Johannes Gutenberg University of Mainz; Langenbeckstr. 1, Geb. 708 55101 Mainz Germany
| | - Ulrika Westerlind
- Gesellschaft zur Förderung der Analytischen Wissenschaften e.V. ISAS-Leibniz Institute for Analytical Sciences; Otto-Hahn-Str. 6b 44227 Dortmund Germany
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26
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Pett C, Cai H, Liu J, Palitzsch B, Schorlemer M, Hartmann S, Stergiou N, Lu M, Kunz H, Schmitt E, Westerlind U. Microarray Analysis of Antibodies Induced with Synthetic Antitumor Vaccines: Specificity against Diverse Mucin Core Structures. Chemistry 2017; 23:3875-3884. [PMID: 27957769 DOI: 10.1002/chem.201603921] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [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: 08/17/2016] [Indexed: 01/08/2023]
Abstract
Glycoprotein research is pivotal for vaccine development and biomarker discovery. Many successful methodologies for reliably increasing the antigenicity toward tumor-associated glycopeptide structures have been reported. Deeper insights into the quality and specificity of the raised polyclonal, humoral reactions are often not addressed, despite the fact that an immunological memory, which produces antibodies with cross-reactivity to epitopes exposed on healthy cells, may cause autoimmune diseases. In the current work, three MUC1 antitumor vaccine candidates conjugated with different immune stimulants are evaluated immunologically. For assessment of the influence of the immune stimulant on antibody recognition, a comprehensive library of mucin 1 glycopeptides (>100 entries) is synthesized and employed in antibody microarray profiling; these range from small tumor-associated glycans (TN , STN , and T-antigen structures) to heavily extended O-glycan core structures (type-1 and type-2 elongated core 1-3 tri-, tetra-, and hexasaccharides) glycosylated in variable density at the five different sites of the MUC1 tandem repeat. This is one of the most extensive glycopeptide libraries ever made through total synthesis. On tumor cells, the core 2 β-1,6-N-acetylglucosaminyltransferase-1 (C2GlcNAcT-1) is down-regulated, resulting in lower amounts of the branched core 2 structures, which favor formation of linear core 1 or core 3 structures, and in particular, truncated tumor-associated antigen structures. The core 2 structures are commonly found on healthy cells and the elucidation of antibody cross-reactivity to such epitopes may predict the tumor-selectivity and safety of synthetic vaccines. With the extended mucin core structures in hand, antibody cross-reactivity toward the branched core 2 glycopeptide epitopes is explored. It is observed that the induced antibodies recognize MUC1 peptides with very high glycosylation site specificity. The nature of the antibody response is characteristically different for antibodies directed to glycosylation sites in either the immune-dominant PDTR or the GSTA domain. All antibody sera show high reactivity to the tumor-associated saccharide structures on MUC1. Extensive glycosylation with branched core 2 structures, typically found on healthy cells, abolishes antibody recognition of the antisera and suggests that all vaccine conjugates preferentially induce a tumor-specific humoral immune response.
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Affiliation(s)
- Christian Pett
- Gesellschaft zur Förderung der Analytischen Wissenschaften e.V. ISAS-Leibniz Institute for Analytical Sciences, Otto-Hahn-Str. 6b, 44227, Dortmund, Germany
| | - Hui Cai
- Gesellschaft zur Förderung der Analytischen Wissenschaften e.V. ISAS-Leibniz Institute for Analytical Sciences, Otto-Hahn-Str. 6b, 44227, Dortmund, Germany
| | - Jia Liu
- Institute for Virology, University Hospital of Essen, University of Duisburg-Essen, Essen, Germany
| | - Björn Palitzsch
- Institute of Organic Chemistry, Johannes Gutenberg, University of Mainz, Duesbergweg 10-14, 55128, Mainz, Germany
| | - Manuel Schorlemer
- Gesellschaft zur Förderung der Analytischen Wissenschaften e.V. ISAS-Leibniz Institute for Analytical Sciences, Otto-Hahn-Str. 6b, 44227, Dortmund, Germany
| | - Sebastian Hartmann
- Institute of Organic Chemistry, Johannes Gutenberg, University of Mainz, Duesbergweg 10-14, 55128, Mainz, Germany
| | - Natascha Stergiou
- University Medical Center, Institute of Immunology, Johannes Gutenberg University of Mainz, Langenbeckstr. 1, Geb. 708, 55101, Mainz, Germany
| | - Mengji Lu
- Institute for Virology, University Hospital of Essen, University of Duisburg-Essen, Essen, Germany
| | - Horst Kunz
- Institute of Organic Chemistry, Johannes Gutenberg, University of Mainz, Duesbergweg 10-14, 55128, Mainz, Germany
| | - Edgar Schmitt
- University Medical Center, Institute of Immunology, Johannes Gutenberg University of Mainz, Langenbeckstr. 1, Geb. 708, 55101, Mainz, Germany
| | - Ulrika Westerlind
- Gesellschaft zur Förderung der Analytischen Wissenschaften e.V. ISAS-Leibniz Institute for Analytical Sciences, Otto-Hahn-Str. 6b, 44227, Dortmund, Germany
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Klugarova J, Janura M, Svoboda Z, Sos Z, Stergiou N, Klugar M. Hallux valgus surgery affects kinematic parameters during gait. Clin Biomech (Bristol, Avon) 2016; 40:20-26. [PMID: 27792950 PMCID: PMC5325701 DOI: 10.1016/j.clinbiomech.2016.10.004] [Citation(s) in RCA: 16] [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] [Received: 11/17/2015] [Revised: 10/03/2016] [Accepted: 10/05/2016] [Indexed: 02/07/2023]
Abstract
BACKGROUND The aim of our study was to compare spatiotemporal parameters and lower limb and pelvis kinematics during the walking in patients with hallux valgus before and after surgery and in relation to a control group. METHODS Seventeen females with hallux valgus, who underwent first metatarsal osteotomy, constituted our experimental group. The control group consisted of thirteen females. Kinematic data during walking were obtained using the Vicon MX system. FINDINGS Our results showed that hallux valgus before surgery affects spatiotemporal parameters and lower limb and pelvis kinematics during walking. Hallux valgus surgery further increased the differences that were present before surgery. Specifically after hallux valgus surgery, the walking speed decreased even more (p=0.09, η2=0.19) while step time increased (p=0.002, η2=0.44) on both legs. The maximum ankle plantar flexion of the operated leg during toe-off decreased to a greater extend (p=0.03, η2=0.26). The asymmetry in the hip and the pelvis movements in the frontal plane (present preoperatively) persisted after surgery. INTERPRETATION Hallux valgus is not an isolated problem of the first ray, which could be just surgically addressed by correcting the foot's alignment. It is a long-term progressive malfunction of the foot affecting the entire kinematic chain of the lower extremity.
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Affiliation(s)
- J. Klugarova
- The Czech Republic (Middle European) Centre for Evidence-Based Healthcare: A Joanna Briggs Institute Centre of Excellence, Department of Social Medicine and Public Health, Faculty of Medicine and Dentistry, Palacky University Olomouc, Hnevotinska 3, 779 00 Olomouc, Czech Republic
| | - M. Janura
- Department of Natural Sciences in Kinanthropology, Faculty of Physical Culture, Palacky University Olomouc, Tr. Miru 115, 771 11 Olomouc, Czech Republic
| | - Z. Svoboda
- Department of Natural Sciences in Kinanthropology, Faculty of Physical Culture, Palacky University Olomouc, Tr. Miru 115, 771 11 Olomouc, Czech Republic
| | - Z. Sos
- Military Hospital, Pasteurova 13, 779 00 Olomouc, Czech Republic
| | - N. Stergiou
- Biomechanics Research Building, Center for Research in Human Movement Variability, University of Nebraska at Omaha, 6160 University Drive South, 68182 Omaha, NE, USA
| | - M. Klugar
- The Czech Republic (Middle European) Centre for Evidence-Based Healthcare: A Joanna Briggs Institute Centre of Excellence, Department of Social Medicine and Public Health, Faculty of Medicine and Dentistry, Palacky University Olomouc, Hnevotinska 3, 779 00 Olomouc, Czech Republic
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Sotirakis H, Kyvelidou A, Mademli L, Stergiou N, Hatzitaki V. Aging affects postural tracking of complex visual motion cues. Exp Brain Res 2016; 234:2529-40. [PMID: 27126061 DOI: 10.1007/s00221-016-4657-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2016] [Accepted: 04/19/2016] [Indexed: 12/22/2022]
Abstract
Postural tracking of visual motion cues improves perception-action coupling in aging, yet the nature of the visual cues to be tracked is critical for the efficacy of such a paradigm. We investigated how well healthy older (72.45 ± 4.72 years) and young (22.98 ± 2.9 years) adults can follow with their gaze and posture horizontally moving visual target cues of different degree of complexity. Participants tracked continuously for 120 s the motion of a visual target (dot) that oscillated in three different patterns: a simple periodic (simulated by a sine), a more complex (simulated by the Lorenz attractor that is deterministic displaying mathematical chaos) and an ultra-complex random (simulated by surrogating the Lorenz attractor) pattern. The degree of coupling between performance (posture and gaze) and the target motion was quantified in the spectral coherence, gain, phase and cross-approximate entropy (cross-ApEn) between signals. Sway-target coherence decreased as a function of target complexity and was lower for the older compared to the young participants when tracking the chaotic target. On the other hand, gaze-target coherence was not affected by either target complexity or age. Yet, a lower cross-ApEn value when tracking the chaotic stimulus motion revealed a more synchronous gaze-target relationship for both age groups. Results suggest limitations in online visuo-motor processing of complex motion cues and a less efficient exploitation of the body sway dynamics with age. Complex visual motion cues may provide a suitable training stimulus to improve visuo-motor integration and restore sway variability in older adults.
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Affiliation(s)
- H Sotirakis
- Motor Control and Learning Laboratory, Department of Physical Education and Sport Science, Aristotle University of Thessaloniki, 546 24, Thessaloniki, Greece
| | - A Kyvelidou
- Department of Biomechanics, University of Nebraska at Omaha, Omaha, NE, USA
| | - L Mademli
- Department of Physical Education and Sports Science at Serres, Aristotle University of Thessaloniki, Serres, Greece
| | - N Stergiou
- Department of Biomechanics, University of Nebraska at Omaha, Omaha, NE, USA.,Department of Environmental, Agricultural, and Occupational Health, College of Public Health, University of Nebraska Medical Center, Omaha, NE, USA
| | - V Hatzitaki
- Motor Control and Learning Laboratory, Department of Physical Education and Sport Science, Aristotle University of Thessaloniki, 546 24, Thessaloniki, Greece.
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29
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Palitzsch B, Gaidzik N, Stergiou N, Stahn S, Hartmann S, Gerlitzki B, Teusch N, Flemming P, Schmitt E, Kunz H. A Synthetic Glycopeptide Vaccine for the Induction of a Monoclonal Antibody that Differentiates between Normal and Tumor Mammary Cells and Enables the Diagnosis of Human Pancreatic Cancer. Angew Chem Int Ed Engl 2016; 55:2894-8. [PMID: 26800384 DOI: 10.1002/anie.201509935] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [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: 11/02/2015] [Indexed: 11/06/2022]
Abstract
In studies within the realm of cancer immunotherapy, the synthesis of exactly specified tumor-associated glycopeptide antigens is shown to be a key strategy for obtaining a highly selective biological reagent, that is, a monoclonal antibody that completely differentiates between tumor and normal epithelial cells and specifically marks the tumor cells in pancreas tumors. Mucin MUC1, which is overexpressed in many prevalent cancers, was identified as a promising target for this strategy. Tumor-associated MUC1 differs significantly from that expressed by normal cells, in particular by altered glycosylation. Structurally defined tumor-associated MUC1 cannot be isolated from tumor cells. We synthesized MUC1-glycopeptide vaccines and analyzed their structure-activity relationships in immunizations; a monoclonal antibody that specifically distinguishes between human normal and tumor epithelial cells was thus generated.
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Affiliation(s)
- Björn Palitzsch
- Institut für Organische Chemie, Universität Mainz, Duesbergweg 10-14, 55128, Mainz, Germany
| | - Nikola Gaidzik
- Institut für Organische Chemie, Universität Mainz, Duesbergweg 10-14, 55128, Mainz, Germany
| | - Natascha Stergiou
- Institut für Immunologie, Universitätsmedizin der Universität Mainz, Langenbeckstrasse 1, G. 708, 55101, Mainz, Germany
| | - Sonja Stahn
- Fakultät für Naturwissenschaften, Technische Hochschule Köln, Kaiser-Wilhelm-Allee, G. E39, 51373, Leverkusen, Germany
| | - Sebastian Hartmann
- Institut für Organische Chemie, Universität Mainz, Duesbergweg 10-14, 55128, Mainz, Germany
| | - Bastian Gerlitzki
- Institut für Immunologie, Universitätsmedizin der Universität Mainz, Langenbeckstrasse 1, G. 708, 55101, Mainz, Germany
| | - Nicole Teusch
- Fakultät für Naturwissenschaften, Technische Hochschule Köln, Kaiser-Wilhelm-Allee, G. E39, 51373, Leverkusen, Germany
| | - Peer Flemming
- Pathologisches Institut Celle, Wittinger Strasse 14, 29223, Celle, Germany
| | - Edgar Schmitt
- Institut für Immunologie, Universitätsmedizin der Universität Mainz, Langenbeckstrasse 1, G. 708, 55101, Mainz, Germany
| | - Horst Kunz
- Institut für Organische Chemie, Universität Mainz, Duesbergweg 10-14, 55128, Mainz, Germany.
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30
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Palitzsch B, Gaidzik N, Stergiou N, Stahn S, Hartmann S, Gerlitzki B, Teusch N, Flemming P, Schmitt E, Kunz H. Ein durch eine synthetische Glycopeptid-Vakzine induzierter monoklonaler Antiköper unterscheidet normale von malignen Brustzellen und ermöglicht die Diagnose von humanen Pankreaskarzinomen. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201509935] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Björn Palitzsch
- Institut für Organische Chemie; Universität Mainz; Duesbergweg 10-14 55128 Mainz Deutschland
| | - Nikola Gaidzik
- Institut für Organische Chemie; Universität Mainz; Duesbergweg 10-14 55128 Mainz Deutschland
| | - Natascha Stergiou
- Institut für Immunologie; Universitätsmedizin der Universität Mainz; Langenbeckstraße 1, G. 708 55101 Mainz Deutschland
| | - Sonja Stahn
- Fakultät für Naturwissenschaften; Technische Hochschule Köln; Kaiser-Wilhelm-Allee, G. E39 51373 Leverkusen Deutschland
| | - Sebastian Hartmann
- Institut für Organische Chemie; Universität Mainz; Duesbergweg 10-14 55128 Mainz Deutschland
| | - Bastian Gerlitzki
- Institut für Immunologie; Universitätsmedizin der Universität Mainz; Langenbeckstraße 1, G. 708 55101 Mainz Deutschland
| | - Nicole Teusch
- Fakultät für Naturwissenschaften; Technische Hochschule Köln; Kaiser-Wilhelm-Allee, G. E39 51373 Leverkusen Deutschland
| | - Peer Flemming
- Pathologisches Institut Celle; Wittinger Straße 14 29223 Celle Deutschland
| | - Edgar Schmitt
- Institut für Immunologie; Universitätsmedizin der Universität Mainz; Langenbeckstraße 1, G. 708 55101 Mainz Deutschland
| | - Horst Kunz
- Institut für Organische Chemie; Universität Mainz; Duesbergweg 10-14 55128 Mainz Deutschland
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31
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Klein M, Brühl TJ, Staudt V, Reuter S, Grebe N, Gerlitzki B, Hoffmann M, Bohn T, Ulges A, Stergiou N, de Graaf J, Löwer M, Taube C, Becker M, Hain T, Dietzen S, Stassen M, Huber M, Lohoff M, Campos Chagas A, Andersen J, Kotál J, Langhansová H, Kopecký J, Schild H, Kotsyfakis M, Schmitt E, Bopp T. Tick Salivary Sialostatin L Represses the Initiation of Immune Responses by Targeting IRF4-Dependent Transcription in Murine Mast Cells. J Immunol 2015; 195:621-31. [PMID: 26078269 DOI: 10.4049/jimmunol.1401823] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Received: 07/17/2014] [Accepted: 05/12/2015] [Indexed: 11/19/2022]
Abstract
Coevolution of ticks and the vertebrate immune system has led to the development of immunosuppressive molecules that prevent immediate response of skin-resident immune cells to quickly fend off the parasite. In this article, we demonstrate that the tick-derived immunosuppressor sialostatin L restrains IL-9 production by mast cells, whereas degranulation and IL-6 expression are both unaffected. In addition, the expression of IL-1β and IRF4 is strongly reduced in the presence of sialostatin L. Correspondingly, IRF4- or IL-1R-deficient mast cells exhibit a strong impairment in IL-9 production, demonstrating the importance of IRF4 and IL-1 in the regulation of the Il9 locus in mast cells. Furthermore, IRF4 binds to the promoters of Il1b and Il9, suggesting that sialostatin L suppresses mast cell-derived IL-9 preferentially by inhibiting IRF4. In an experimental asthma model, mast cell-specific deficiency in IRF4 or administration of sialostatin L results in a strong reduction in asthma symptoms, demonstrating the immunosuppressive potency of tick-derived molecules.
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Affiliation(s)
- Matthias Klein
- Institute for Immunology, University Medical Center of the Johannes Gutenberg-University Mainz, 55131 Mainz, Germany
| | - Till-Julius Brühl
- Institute for Immunology, University Medical Center of the Johannes Gutenberg-University Mainz, 55131 Mainz, Germany
| | - Valérie Staudt
- Institute for Immunology, University Medical Center of the Johannes Gutenberg-University Mainz, 55131 Mainz, Germany
| | - Sebastian Reuter
- III. Medical Clinic, University Medical Center of the Johannes Gutenberg-University Mainz, 55131 Mainz, Germany
| | - Nadine Grebe
- Institute for Immunology, University Medical Center of the Johannes Gutenberg-University Mainz, 55131 Mainz, Germany
| | - Bastian Gerlitzki
- Institute for Immunology, University Medical Center of the Johannes Gutenberg-University Mainz, 55131 Mainz, Germany
| | - Markus Hoffmann
- Institute for Immunology, University Medical Center of the Johannes Gutenberg-University Mainz, 55131 Mainz, Germany
| | - Toszka Bohn
- Institute for Immunology, University Medical Center of the Johannes Gutenberg-University Mainz, 55131 Mainz, Germany
| | - Alexander Ulges
- Institute for Immunology, University Medical Center of the Johannes Gutenberg-University Mainz, 55131 Mainz, Germany
| | - Natascha Stergiou
- Institute for Immunology, University Medical Center of the Johannes Gutenberg-University Mainz, 55131 Mainz, Germany
| | - Jos de Graaf
- Translational Oncology, University Medical Center of the Johannes Gutenberg-University, 55131 Mainz, Germany
| | - Martin Löwer
- Translational Oncology, University Medical Center of the Johannes Gutenberg-University, 55131 Mainz, Germany
| | - Christian Taube
- Department of Pulmonology, Leiden University Medical Center, 2333 ZA Leiden, the Netherlands
| | - Marc Becker
- Institute for Immunology, University Medical Center of the Johannes Gutenberg-University Mainz, 55131 Mainz, Germany
| | - Tobias Hain
- Institute for Immunology, University Medical Center of the Johannes Gutenberg-University Mainz, 55131 Mainz, Germany
| | - Sarah Dietzen
- Institute for Immunology, University Medical Center of the Johannes Gutenberg-University Mainz, 55131 Mainz, Germany
| | - Michael Stassen
- Institute for Immunology, University Medical Center of the Johannes Gutenberg-University Mainz, 55131 Mainz, Germany
| | - Magdalena Huber
- Institut für Medizinische Mikrobiologie und Krankenhaushygiene, 35043 Marburg, Germany
| | - Michael Lohoff
- Institut für Medizinische Mikrobiologie und Krankenhaushygiene, 35043 Marburg, Germany
| | - Andrezza Campos Chagas
- Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD 20852
| | - John Andersen
- Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD 20852
| | - Jan Kotál
- Institute of Parasitology, Biology Centre of the Academy of Sciences of the Czech Republic, 37005 České Budějovice, Czech Republic; and
| | - Helena Langhansová
- Institute of Parasitology, Biology Centre of the Academy of Sciences of the Czech Republic, 37005 České Budějovice, Czech Republic; and Faculty of Science, University of South Bohemia, 37005 České Budějovice, Czech Republic
| | - Jan Kopecký
- Institute of Parasitology, Biology Centre of the Academy of Sciences of the Czech Republic, 37005 České Budějovice, Czech Republic; and Faculty of Science, University of South Bohemia, 37005 České Budějovice, Czech Republic
| | - Hansjörg Schild
- Institute for Immunology, University Medical Center of the Johannes Gutenberg-University Mainz, 55131 Mainz, Germany
| | - Michalis Kotsyfakis
- Institute of Parasitology, Biology Centre of the Academy of Sciences of the Czech Republic, 37005 České Budějovice, Czech Republic; and
| | - Edgar Schmitt
- Institute for Immunology, University Medical Center of the Johannes Gutenberg-University Mainz, 55131 Mainz, Germany
| | - Tobias Bopp
- Institute for Immunology, University Medical Center of the Johannes Gutenberg-University Mainz, 55131 Mainz, Germany;
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Chien JH, Yentes J, Stergiou N, Siu KC. The Effect of Walking Speed on Gait Variability in Healthy Young, Middle-aged and Elderly Individuals. J Phys Act Nutr Rehabil 2015; 2015:http://www.panr.com.cy/index.php/article/the-effect-of-walking-speed-on-gait-variability-in-healthy-young-middle-aged-and-elderly-individuals/. [PMID: 26929929 PMCID: PMC4768759] [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] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Previous research with healthy young adults has suggested that the temporal structure of gait variability is not random but shows self-similarity that is dependent on speed. Specifically, the strength of the long-range correlation of stride intervals follows a quadratic relationship with the minimum values at the respective preferred walking speed (PWS). The purpose of this study was to investigate if this relationship is affected by increasing age. Ten healthy young, seven healthy, middle-aged and seven healthy, elderly adults completed five-minute walking trials at 80%, 90%, 100%, 110% and 120% of their PWS on a treadmill. We investigated the temporal structure of gait variability by using detrended fluctuation analysis. In addition, we computed the Coefficient of Variation (CV) to identify effects on amount of gait variability. Our results revealed a significant quadratic relationship between the temporal structure of gait variability and speed for all groups extending the previously reported existence of such a relationship in healthy young adults to older individuals. However, only significant negative linear relationships were found between amount of variability and speed providing support that this relationship is not quadratic but linear across individuals of different ages. In addition, we found that the examination of the temporal structure of gait variability is more sensitive in differentiating middle-age and younger individuals. If middle-age is where the aging process starts, then measures of the temporal structure of gait variability are essential as prognostic and diagnostic tools of aging.
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Affiliation(s)
- J. H. Chien
- School of Health, Physical Education & Recreation, University of Omaha at Nebraska
| | - J. Yentes
- School of Health, Physical Education & Recreation, University of Omaha at Nebraska
| | - N. Stergiou
- School of Health, Physical Education & Recreation, University of Omaha at Nebraska
| | - K.-C Siu
- School of Health, Physical Education & Recreation, University of Omaha at Nebraska
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Cai H, Palitzsch B, Hartmann S, Stergiou N, Kunz H, Schmitt E, Westerlind U. Inside Cover: Antibody Induction Directed against the Tumor-Associated MUC4 Glycoprotein (ChemBioChem 6/2015). Chembiochem 2015. [DOI: 10.1002/cbic.201590013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Hartmann S, Nuhn L, Palitzsch B, Glaffig M, Stergiou N, Gerlitzki B, Schmitt E, Kunz H, Zentel R. CpG-loaded multifunctional cationic nanohydrogel particles as self-adjuvanting glycopeptide antitumor vaccines. Adv Healthc Mater 2015; 4:522-7. [PMID: 25327631 DOI: 10.1002/adhm.201400460] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [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: 07/30/2014] [Revised: 09/19/2014] [Indexed: 12/14/2022]
Abstract
Self-adjuvanting antitumor vaccines by multifunctional cationic nanohydrogels loaded with CpG. A conjugate consisting of tumor-associated MUC1-glycopeptide B-cell epitope and tetanus toxin T-cell epitope P2 is linked to cationic nanogels. Oligonucleotide CpG complexation enhances toll-like receptor (TLR) stimulated T-cell proliferation and rapid immune activation. This co-delivery promotes induction of specific MUC1-antibodies binding to human breast tumor cells without external adjuvant.
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Affiliation(s)
- Sebastian Hartmann
- Institute of Organic Chemistry; Johannes Gutenberg-University Mainz; Duesbergweg 10-14 55128 Mainz Germany
| | - Lutz Nuhn
- Institute of Organic Chemistry; Johannes Gutenberg-University Mainz; Duesbergweg 10-14 55128 Mainz Germany
| | - Björn Palitzsch
- Institute of Organic Chemistry; Johannes Gutenberg-University Mainz; Duesbergweg 10-14 55128 Mainz Germany
| | - Markus Glaffig
- Institute of Organic Chemistry; Johannes Gutenberg-University Mainz; Duesbergweg 10-14 55128 Mainz Germany
| | - Natascha Stergiou
- University Medical Center - Institute of Immunology; Johannes Gutenberg-University Mainz; Langenbeckstrasse 1, Geb. 708 55101 Mainz Germany
| | - Bastian Gerlitzki
- University Medical Center - Institute of Immunology; Johannes Gutenberg-University Mainz; Langenbeckstrasse 1, Geb. 708 55101 Mainz Germany
| | - Edgar Schmitt
- University Medical Center - Institute of Immunology; Johannes Gutenberg-University Mainz; Langenbeckstrasse 1, Geb. 708 55101 Mainz Germany
| | - Horst Kunz
- Institute of Organic Chemistry; Johannes Gutenberg-University Mainz; Duesbergweg 10-14 55128 Mainz Germany
| | - Rudolf Zentel
- Institute of Organic Chemistry; Johannes Gutenberg-University Mainz; Duesbergweg 10-14 55128 Mainz Germany
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Cai H, Palitzsch B, Hartmann S, Stergiou N, Kunz H, Schmitt E, Westerlind U. Antibody induction directed against the tumor-associated MUC4 glycoprotein. Chembiochem 2015; 16:959-67. [PMID: 25755023 DOI: 10.1002/cbic.201402689] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [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: 12/04/2014] [Indexed: 12/15/2022]
Abstract
Mucin glycoproteins are important diagnostic and therapeutic targets for cancer treatment. Although several strategies have been developed to explore anti-tumor vaccines based on MUC1 glycopeptides, only few studies have focused on vaccines directed against the tumor-associated MUC4 glycoprotein. MUC4 is an important tumor marker overexpressed in lung cancer and uniquely expressed in pancreatic ductual adenocarcinoma. The aberrant glycosylation of MUC4 in tumor cells results in an exposure of its peptide backbone and the formation of tumor-associated glycopeptide antigens. Due to the low immunogenicity of these endogenous structures, their conjugation with immune stimulating peptide or protein carriers are required. In this study, MUC4 tandem-repeat glycopeptides were conjugated to the tetanus toxoid and used for vaccination of mice. Immunological evaluations showed that our MUC4-based vaccines induced very strong antigen-specific immune responses. In addition, antibody binding epitope analysis on glycopeptide microarrays, were demonstrating a clear glycosylation site dependence of the induced antibodies.
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Affiliation(s)
- Hui Cai
- Gesellschaft zur Förderung der Analytischen Wissenschaften e.V. ISAS-Leibniz Institute for Analytical Sciences, Otto-Hahn-Strasse 6b, 44227 Dortmund (Germany)
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Glaffig M, Palitzsch B, Stergiou N, Schüll C, Straßburger D, Schmitt E, Frey H, Kunz H. Enhanced immunogenicity of multivalent MUC1 glycopeptide antitumour vaccines based on hyperbranched polymers. Org Biomol Chem 2015; 13:10150-4. [DOI: 10.1039/c5ob01255d] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
A fully synthetic multivalent MUC1 glycopeptide vaccine based on a hyperbranched polyglycerol core induced IgG antibodies which strongly recognise epithelial tumour cells.
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Affiliation(s)
- M. Glaffig
- Johannes Gutenberg-University Mainz
- Institute of Organic Chemistry
- 55128 Mainz
- Germany
| | - B. Palitzsch
- Johannes Gutenberg-University Mainz
- Institute of Organic Chemistry
- 55128 Mainz
- Germany
| | - N. Stergiou
- University Medical Center
- Institute of Immunology
- Johannes Gutenberg-University Mainz
- 55101 Mainz
- Germany
| | - C. Schüll
- Johannes Gutenberg-University Mainz
- Institute of Organic Chemistry
- 55128 Mainz
- Germany
| | - D. Straßburger
- Johannes Gutenberg-University Mainz
- Institute of Organic Chemistry
- 55128 Mainz
- Germany
| | - E. Schmitt
- University Medical Center
- Institute of Immunology
- Johannes Gutenberg-University Mainz
- 55101 Mainz
- Germany
| | - H. Frey
- Johannes Gutenberg-University Mainz
- Institute of Organic Chemistry
- 55128 Mainz
- Germany
| | - H. Kunz
- Johannes Gutenberg-University Mainz
- Institute of Organic Chemistry
- 55128 Mainz
- Germany
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Palitzsch B, Hartmann S, Stergiou N, Glaffig M, Schmitt E, Kunz H. Eine vollsynthetische Vier-Komponenten-Antitumor-Vakzine mit einem MUC1-Glycopeptid und drei verschiedenen T-Helferzell- Epitopen. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201406843] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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Palitzsch B, Hartmann S, Stergiou N, Glaffig M, Schmitt E, Kunz H. A Fully Synthetic Four-Component Antitumor Vaccine Consisting of a Mucin Glycopeptide Antigen Combined with Three Different T-Helper-Cell Epitopes. Angew Chem Int Ed Engl 2014; 53:14245-9. [DOI: 10.1002/anie.201406843] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2014] [Indexed: 11/07/2022]
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Patras K, Ziogas G, Ristanis S, Tsepis E, Tsiaras V, Stergiou N, Georgoulis AD. Endurance markers are related with local neuromuscular response for the intact but not for the ACL reconstructed leg during high intensity running. J Sports Med Phys Fitness 2011; 51:708-714. [PMID: 22212277] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
AIM It has been demonstrated that the local neuromuscular response during high intensity exercise has a strong relationship with endurance markers. However, a diminished neuromuscular response has been reported for the operated leg in athletes having undergone anterior cruciate ligament reconstruction (ACLR). The purpose of the present study was to examine the relationships between endurance markers and the EMG response during high intensity running in ACLR athletes. METHODS Fourteen ACLR soccer players underwent a GXT test to volitional exhaustion and a 10-min bout of high intensity running. During the 10-min bout, EMG data were recorded at the 3rd and 10th minute from the vastus lateralis bilaterally using a telemetric system. The final EMG levels were expressed as a percentage of the initial values. Pearson moment product correlations were used to assess the relationship between the endurance markers of VO2max, velocity at lactate threshold (vLT), velocity at 4mM (V4) and the final EMG levels. RESULTS Final EMG levels for the intact leg had a very strong relationship with vLT (r=0.77, P=0.001) and a strong relationship with V4 (r=0.68, P=0.008). Final EMG levels for the reconstructed leg had moderate relationship with vLT (r=0.47, P=0.09) and V4 (r=0.52, P=0.06). CONCLUSION The neuromuscular response of the intact leg during high intensity running shows strong to very strong relationships with endurance markers. Failure of the ACLR leg to present relationships of similar strength may indicate that chronic perturbations modify the ability of the local muscular environment to tolerate sustained high intensity efforts.
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Affiliation(s)
- K Patras
- Department of Orthopaedic Surgery, University of Ioannina, Ioannina, Greece.
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Westcott J, Wurdeman S, Myers S, Stergiou N, Pipinos I, Johanning J. Location of Claudication Pain Does Not Accurately Reflect Gait Impairment in PAD Patients. J Surg Res 2011. [DOI: 10.1016/j.jss.2010.11.639] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Georgaki-Angelaki H, Stergiou N, Kapogiannis A, Orfanou I, Grapsa B, Roma E. Atypical hemolytic-uremic syndrome (HUS) with recovery after a long-lasting anuria: a case report. Hippokratia 2011; 15:90-92. [PMID: 21607045 PMCID: PMC3093155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
We report a case of a seven-year-old girl who suffered from atypical Hemolytic Uremic Syndrome (aHUS) complicated by septicaemia, central nervous system involvement, and cholangiitis. She remained anuric requiring treatment with peritoneal dialysis (PD) for a five-month period. In addition to conventional therapeutic measures including fresh frozen plasma (FFP) and blood cells transfusions she also underwent to plasma exchange (PE) treatment. Following a stormy hospitalization period of 17 weeks, the patient finally regained renal function and three years later she remains well on antihypertensive treatment and free of dialysis.
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Cavanaugh JT, Stergiou N. Response to Chastin et al.: ANALYSIS OF NONLINEAR PATTERNS OF ACTIVITY. J Gerontol A Biol Sci Med Sci 2010. [DOI: 10.1093/gerona/glq140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Johanning J, Myers S, Pipinos I, Stergiou N. Vascular Occlusion Changes Gait Variability Patterns of Young Individuals. J Surg Res 2010. [DOI: 10.1016/j.jss.2009.11.362] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Chouliaras V, Ristanis S, Moraiti C, Tzimas V, Stergiou N, Georgoulis AD. Anterior cruciate ligament reconstruction with a quadrupled hamstrings tendon autograft does not restore tibial rotation to normative levels during landing from a jump and subsequent pivoting. J Sports Med Phys Fitness 2009; 49:64-70. [PMID: 19188897] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
AIM Recent research suggested that the anterior curciate ligament (ACL) reconstruction does not restore tibial rotation to normal levels when a bone patellar tendon bone (BPTB) graft is used during high demanding activities. Our goal was to determine if the usage of an alternative graft, as the quadrupled semitendinosus-gracilis (ST/G), restore tibial rotation to normal values in a population of athletically active individuals while performing a usual for their sport activity. METHODS Eleven subjects, all reconstructed with an ST/G graft, were assessed in vivo, 9 months postoperatively, while they jumped off a 40 cm platform, landed on the ground and subsequently pivoted at 90 degrees. The evaluation period was identified from initial foot contact with the ground, included the pivoting of the ipsilateral leg, and was completed upon touchdown of the contralateral leg. By that time the patients had already returned to their sports activities. RESULTS The maximum range of motion of the tibial rotation for the pivoting leg, during the evaluation period was found significantly (P=0.0001) larger in the reconstructed leg as compared to the intact contralateral, although both clinical and arthrometer assessments revealed restoration of anterior translation. CONCLUSIONS It was concluded that ACL reconstruction with an ST/G graft does not restore tibial rotation to normal levels during this high demanding activity. It seems that new surgical techniques are needed to better replicate the actual anatomy and function of the natural ACL in order to address this problem.
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Affiliation(s)
- V Chouliaras
- Orthopaedic Sports Medicine Center, Department of Orthopaedic Surgery, University of Ioannina, Ioannina, Greece
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46
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Potach DH, Katsavelis D, Karst GM, Latin RW, Stergiou N. The effects of a plyometric training program on the latency time of the quadriceps femoris and gastrocnemius short-latency responses. J Sports Med Phys Fitness 2009; 49:35-43. [PMID: 19188894] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
AIM The purpose of this study was to determine if a plyometric training program can affect the latency time of the quadriceps femoris and gastrocnemius short-latency responses (SLRs) of the stretch reflex. METHODS Sixteen healthy subjects (12 female and 4 male) were randomly assigned to either a control or a plyometric training group. Maximum vertical jump height (VJ) and SLRs of both quadriceps femoris and gastrocnemius were measured before and after a four week plyometric training program. RESULTS Plyometric training significantly increased VJ (mean+/-SEM) by 2.38+/-0.45 cm (P<0.05) and non-significantly decreased the latency time of the quadriceps femoris SLR (mean+/-SEM) 0.363+/-0.404 ms (P>0.05) and gastrocnemius SLR (mean+/-SEM) 0.392+/-0.257 ms (P>0.05). VJ results support the effectiveness of plyometric training for increasing VJ height. CONCLUSIONS The non-significant changes in the latency time of the quadriceps femoris and gastrocnemius SLRs seen in the training group suggest that performance improvements following a four-week plyometric training program are not mediated by changes in the latency time of the short-latency stretch reflex.
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Affiliation(s)
- D H Potach
- Nebraska Biomechanics Core Facility, University of Nebraska at Omaha, Omaha, NE 68182-0216, USA
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Suh IH, Siu KC, Mukherjee M, Monk E, Oleynikov D, Stergiou N. Consistency of performance of robot-assisted surgical tasks in virtual reality. Stud Health Technol Inform 2009; 142:369-373. [PMID: 19377186] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
The purpose of this study was to investigate consistency of performance of robot-assisted surgical tasks in a virtual reality environment. Eight subjects performed two surgical tasks, bimanual carrying and needle passing, with both the da Vinci surgical robot and a virtual reality equivalent environment. Nonlinear analysis was utilized to evaluate consistency of performance by calculating the regularity and the amount of divergence in the movement trajectories of the surgical instrument tips. Our results revealed that movement patterns for both training tasks were statistically similar between the two environments. Consistency of performance as measured by nonlinear analysis could be an appropriate methodology to evaluate the complexity of the training tasks between actual and virtual environments and assist in developing better surgical training programs.
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Affiliation(s)
- I H Suh
- University of Nebraska, Omaha, NE, USA.
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Mukherjee M, Siu KC, Suh IH, Klutman A, Oleynikov D, Stergiou N. A virtual reality training program for improvement of robotic surgical skills. Stud Health Technol Inform 2009; 142:210-214. [PMID: 19377151] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
The purpose of this study was to use a simulated virtual reality environment for training of surgical skills and then to identify if the learning that occurred was transferable to a real world surgical task. The virtual surgical tasks consisted of bimanual carrying, needle passing and mesh alignment. In this ongoing study, the experimental group (n = 5) was trained by performing four blocks of the virtual surgical tasks using the da Vinci surgical robot. Pre and post training, all subjects were tested by performing a suturing task on a "life-like" suture pad. The control group (n = 5) performed only the suturing task. Significantly larger pre and post differences were revealed in time to task completion (p < 0.05) and total distance travelled by the dominant side instrument tip (p < 0.01) in the experimental group as compared to the control group. These differences were specific to the suture running aspect of the surgical task. In conclusion, virtual reality surgical skills training may produce a significant learning effect that can transfer to actual robot-assisted laparoscopic procedures.
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Affiliation(s)
- M Mukherjee
- Nebraska Biomechanics Core Facility, University of Nebraska, Omaha, USA.
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Brown-Clerk B, Siu KC, Katsavelis D, Lee I, Oleynikov D, Stergiou N. Validating advanced robot-assisted laparoscopic training task in virtual reality. Stud Health Technol Inform 2008; 132:45-49. [PMID: 18391254] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
The purpose of this study was to validate a complex robotic surgical task, mesh alignment, in virtual reality. Nine subjects unrolled and aligned a mesh onto an inanimate template for the mesh alignment task in both an actual (the da Vinci Robotic Surgical System) and a virtual environment. Data analysis included time to task completion, distance traveled, and speed, of the surgical instrument, as well as electromyography of the extensors and flexors of the dominant arm of the subject. Paired t-tests were used to compare the dependent variables between the actual and virtual environments. The virtual mesh alignment task was statistically similar for all variables except the flexor activity as compared to the actual task. In conclusion, virtual reality could be used as an effective environment to train the next generation of robot-assisted laparoscopic surgeons.
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Affiliation(s)
- B Brown-Clerk
- HPER Biomechanics Laboratory, University of Nebraska at Omaha, Omaha, NE, USA
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Deffeyes J, Stergiou N, Harbourne R, Kyvelidou A, De Jong S, Stuberg W. SITTING POSTURAL SWAY CAN ASSESS SEVERITY OF INFANT DEVELOPMETAL DELAY. J Biomech 2007. [DOI: 10.1016/s0021-9290(07)70245-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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