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Aubrecht P, Smejkal J, Panuška P, Španbauerová K, Neubertová V, Kaule P, Matoušek J, Vinopal S, Liegertová M, Štofik M, Malý J. Performance and biocompatibility of OSTEMER 322 in cell-based microfluidic applications. RSC Adv 2024; 14:3617-3635. [PMID: 38268545 PMCID: PMC10804231 DOI: 10.1039/d3ra05789e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Accepted: 01/14/2024] [Indexed: 01/26/2024] Open
Abstract
The Off-Stoichiometry Thiol-ene and Epoxy (OSTE+) polymer technology has been increasingly utilised in the field of microfluidics and lab-on-a-chip applications. However, the impact of OSTEMER polymers, specifically the OSTEMER 322 formulation, on cell viability has remained limited. In this work, we thoroughly explored the biocompatibility of this commercial OSTEMER formulation, along with various surface modifications, through a broad range of cell types, from fibroblasts to epithelial cells. We employed cell viability and confluence assays to evaluate the performance of the material and its modified variants in cell culturing. The properties of the pristine and modified OSTEMER were also investigated using surface characterization methods including contact angle, zeta potential, and X-ray photoelectron spectroscopy. Mass spectrometry analysis confirmed the absence of leaching constituents from OSTEMER, indicating its safety for cell-based applications. Our findings demonstrated that cell viability on OSTEMER surfaces is sufficient for typical cell culture experiments, suggesting OSTEMER 322 is a suitable material for a variety of cell-based assays in microfluidic devices.
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Affiliation(s)
- Petr Aubrecht
- Centre for Nanomaterials and Biotechnology, Faculty of Science, Jan Evangelista Purkyně University in Ústí nad Labem Pasteurova 3632/15 400 96 Ústí nad Labem Czech Republic
| | - Jiří Smejkal
- Centre for Nanomaterials and Biotechnology, Faculty of Science, Jan Evangelista Purkyně University in Ústí nad Labem Pasteurova 3632/15 400 96 Ústí nad Labem Czech Republic
| | - Petr Panuška
- Centre for Nanomaterials and Biotechnology, Faculty of Science, Jan Evangelista Purkyně University in Ústí nad Labem Pasteurova 3632/15 400 96 Ústí nad Labem Czech Republic
| | - Klára Španbauerová
- Centre for Nanomaterials and Biotechnology, Faculty of Science, Jan Evangelista Purkyně University in Ústí nad Labem Pasteurova 3632/15 400 96 Ústí nad Labem Czech Republic
| | - Viktorie Neubertová
- Centre for Nanomaterials and Biotechnology, Faculty of Science, Jan Evangelista Purkyně University in Ústí nad Labem Pasteurova 3632/15 400 96 Ústí nad Labem Czech Republic
| | - Pavel Kaule
- Centre for Nanomaterials and Biotechnology, Faculty of Science, Jan Evangelista Purkyně University in Ústí nad Labem Pasteurova 3632/15 400 96 Ústí nad Labem Czech Republic
- Department of Chemistry, Faculty of Science, Jan Evangelista Purkyně University in Ústí nad Labem Pasteurova 3632/15 400 96 Ústí nad Labem Czech Republic
| | - Jindřich Matoušek
- Department of Physics, Faculty of Science, Jan Evangelista Purkyně University in Ústí nad Labem Pasteurova 3632/15 400 96 Ústí nad Labem Czech Republic
| | - Stanislav Vinopal
- Centre for Nanomaterials and Biotechnology, Faculty of Science, Jan Evangelista Purkyně University in Ústí nad Labem Pasteurova 3632/15 400 96 Ústí nad Labem Czech Republic
| | - Michaela Liegertová
- Centre for Nanomaterials and Biotechnology, Faculty of Science, Jan Evangelista Purkyně University in Ústí nad Labem Pasteurova 3632/15 400 96 Ústí nad Labem Czech Republic
| | - Marcel Štofik
- Centre for Nanomaterials and Biotechnology, Faculty of Science, Jan Evangelista Purkyně University in Ústí nad Labem Pasteurova 3632/15 400 96 Ústí nad Labem Czech Republic
| | - Jan Malý
- Centre for Nanomaterials and Biotechnology, Faculty of Science, Jan Evangelista Purkyně University in Ústí nad Labem Pasteurova 3632/15 400 96 Ústí nad Labem Czech Republic
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Bifurcated Asymmetric Field Flow Fractionation of Nanoparticles in PDMS-Free Microfluidic Devices for Applications in Label-Free Extracellular Vesicle Separation. Polymers (Basel) 2023; 15:polym15040789. [PMID: 36850073 PMCID: PMC9961489 DOI: 10.3390/polym15040789] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2022] [Revised: 01/26/2023] [Accepted: 02/02/2023] [Indexed: 02/08/2023] Open
Abstract
Extracellular vesicles are small membrane-bound structures that are released by cells and play important roles in intercellular communication garnering significant attention in scientific society recently due to their potential as diagnostic and therapeutic tools. However, separating EVs from large-volume samples remains a challenge due to their small size and low concentration. In this manuscript, we presented a novel method for separating polystyrene beads as control and extracellular vesicles from large sample volumes using bifurcated asymmetric field flow fractionation in PDMS-free microfluidic devices. Separation characteristics were evaluated using the control system of polystyrene bead mix, which offers up to 3.7X enrichment of EV-sized beads. Furthermore, in the EV-sample from bioreactor culture media, we observed a notable population distribution shift of extracellular vesicles. Herein presented novel PDMS-free microfluidic device fabrication protocol resulted in devices with reduced EV-loss compared to size-exclusion columns. This method represented an improvement over the current state of the art in terms of EV separation from large sample volumes through the use of novel field flow fractionation design.
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Herminghaus A, Kozlov AV, Szabó A, Hantos Z, Gylstorff S, Kuebart A, Aghapour M, Wissuwa B, Walles T, Walles H, Coldewey SM, Relja B. A Barrier to Defend - Models of Pulmonary Barrier to Study Acute Inflammatory Diseases. Front Immunol 2022; 13:895100. [PMID: 35874776 PMCID: PMC9300899 DOI: 10.3389/fimmu.2022.895100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2022] [Accepted: 06/20/2022] [Indexed: 12/04/2022] Open
Abstract
Pulmonary diseases represent four out of ten most common causes for worldwide mortality. Thus, pulmonary infections with subsequent inflammatory responses represent a major public health concern. The pulmonary barrier is a vulnerable entry site for several stress factors, including pathogens such as viruses, and bacteria, but also environmental factors e.g. toxins, air pollutants, as well as allergens. These pathogens or pathogen-associated molecular pattern and inflammatory agents e.g. damage-associated molecular pattern cause significant disturbances in the pulmonary barrier. The physiological and biological functions, as well as the architecture and homeostatic maintenance of the pulmonary barrier are highly complex. The airway epithelium, denoting the first pulmonary barrier, encompasses cells releasing a plethora of chemokines and cytokines, and is further covered with a mucus layer containing antimicrobial peptides, which are responsible for the pathogen clearance. Submucosal antigen-presenting cells and neutrophilic granulocytes are also involved in the defense mechanisms and counterregulation of pulmonary infections, and thus may directly affect the pulmonary barrier function. The detailed understanding of the pulmonary barrier including its architecture and functions is crucial for the diagnosis, prognosis, and therapeutic treatment strategies of pulmonary diseases. Thus, considering multiple side effects and limited efficacy of current therapeutic treatment strategies in patients with inflammatory diseases make experimental in vitro and in vivo models necessary to improving clinical therapy options. This review describes existing models for studyying the pulmonary barrier function under acute inflammatory conditions, which are meant to improve the translational approaches for outcome predictions, patient monitoring, and treatment decision-making.
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Affiliation(s)
- Anna Herminghaus
- Department of Anaesthesiology, University of Duesseldorf, Duesseldorf, Germany
| | - Andrey V. Kozlov
- L Boltzmann Institute for Traumatology in Cooperation with AUVA and Austrian Cluster for Tissue Regeneration, Vienna, Austria
- Department of Human Pathology , IM Sechenov Moscow State Medical University, Moscow, Russia
| | - Andrea Szabó
- Institute of Surgical Research, University of Szeged, Szeged, Hungary
| | - Zoltán Hantos
- Department of Anaesthesiology and Intensive Therapy, Semmelweis University, Budapest, Hungary
| | - Severin Gylstorff
- Experimental Radiology, Department of Radiology and Nuclear Medicine, Otto-von-Guericke University, Magdeburg, Germany
- Research Campus STIMULATE, Otto-von-Guericke University, Magdeburg, Germany
| | - Anne Kuebart
- Department of Anaesthesiology, University of Duesseldorf, Duesseldorf, Germany
| | - Mahyar Aghapour
- Experimental Radiology, Department of Radiology and Nuclear Medicine, Otto-von-Guericke University, Magdeburg, Germany
| | - Bianka Wissuwa
- Department of Anaesthesiology and Intensive Care Medicine, Septomics Research Centre, Centre for Sepsis Control and Care, Jena University Hospital, Jena, Germany
| | - Thorsten Walles
- Department of Thoracic Surgery, Magdeburg University Medicine, Magdeburg, Germany
| | - Heike Walles
- Research Campus STIMULATE, Otto-von-Guericke University, Magdeburg, Germany
- Core Facility Tissue Engineering, Otto-von-Guericke-University, Magdeburg, Germany
| | - Sina M. Coldewey
- Department of Anaesthesiology and Intensive Care Medicine, Septomics Research Centre, Centre for Sepsis Control and Care, Jena University Hospital, Jena, Germany
| | - Borna Relja
- Experimental Radiology, Department of Radiology and Nuclear Medicine, Otto-von-Guericke University, Magdeburg, Germany
- Research Campus STIMULATE, Otto-von-Guericke University, Magdeburg, Germany
- *Correspondence: Borna Relja,
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