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You are researching: Matrigel
Cell Type
Tissue and Organ Biofabrication
Skin Tissue Engineering
Drug Delivery
Biological Molecules
Solid Dosage Drugs
Stem Cells
Personalised Pharmaceuticals
Inducend Pluripotent Stem Cells (IPSCs)
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- Institution
- University of Barcelona
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- Printing Technology
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- Poly(Vinyl Formal)
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- 2-hydroxyethyl) methacrylate (HEMA)
- Paraffin
- Polyphenylene Oxide
- Micro/nano-particles
- Biological Molecules
- Decellularized Extracellular Matrix (dECM)
- Solid Dosage Drugs
- Ceramics
- Metals
AUTHOR
Title
Macromolecular crowding tuned extracellular matrix deposition in a bioprinted human rhabdomyosarcoma model
[Abstract]
Year
2022
Journal/Proceedings
Bioprinting
Reftype
Groups
AbstractThe role of the extracellular matrix (ECM) in tumor recurrence and metastasis has been gaining attention. Indeed, not only cellular, but also structural proteins influence migratory and invasive capacity of tumor cells, including growth and resistance to drugs. Therefore, new in vitro tumor models that entail improved ECM formation and deposition are needed. Here, we are developed three-dimensional (3D) models of pediatric soft tissue sarcoma (Rhabdomyosarcoma [RMS]) with the two major subgroups, the embryonal (ERMS) and the alveolar (ARMS) form. We applied macromolecular crowding (MMC) technology to monolayer cultures, spheroids, and 3D bioprinted constructs. In all culture models, exposure to MMC significantly increased ECM deposition. Interestingly, bioprinted constructs showed a collagen and fibronectin matrix architecture that was comparable to that of tumor xenografts. Furthermore, the bioprinted model not only showed tumor cell growth inside the structure but also displayed cell clusters leaving the edges of the bioprinted construct, probably emulating a metastatic mechanism. ARMS and ERMS cells reacted differently in the bioprinted structure. Indeed, the characteristic metastatic behavior was much more pronounced in the more aggressive ARMS subtype. This promising approach opens new avenues for studying RMS microenvironment and creating a platform for cancer drug testing including the native tumor ECM.
AUTHOR
Title
Matrigel 3D bioprinting of contractile human skeletal muscle models recapitulating exercise and pharmacological responses
[Abstract]
Year
2021
Journal/Proceedings
Communications Biology
Reftype
Alave Reyes-Furrer2021
DOI/URL
DOI
Groups
AbstractA key to enhance the low translatability of preclinical drug discovery are in vitro human three-dimensional (3D) microphysiological systems (MPS). Here, we show a new method for automated engineering of 3D human skeletal muscle models in microplates and functional compound screening to address the lack of muscle wasting disease medication. To this end, we adapted our recently described 24-well plate 3D bioprinting platform with a printhead cooling system to allow microvalve-based drop-on-demand printing of cell-laden Matrigel containing primary human muscle precursor cells. Mini skeletal muscle models develop within a week exhibiting contractile, striated myofibers aligned between two attachment posts. As an in vitro exercise model, repeated high impact stimulation of contractions for 3 h by a custom-made electrical pulse stimulation (EPS) system for 24-well plates induced interleukin-6 myokine expression and Akt hypertrophy pathway activation. Furthermore, the known muscle stimulators caffeine and Tirasemtiv acutely increase EPS-induced contractile force of the models. This validated new human muscle MPS will benefit development of drugs against muscle wasting diseases. Moreover, our Matrigel 3D bioprinting platform will allow engineering of non-self-organizing complex human 3D MPS.
AUTHOR
Title
Investigation of drug dissolution and uptake from low-density DPI formulations in an impactor–integrated cell culture model
[Abstract]
Year
2020
Journal/Proceedings
European Journal of Pharmaceutics and Biopharmaceutics
Reftype
Groups
AbstractBesides deposition, pulmonary bioavailability is determined by dissolution of particles in the scarce epithelial fluid and by cellular API uptake. In the present work, we have developed an experimental in vitro model, which is combining the state-of-the-art next generation impactor (NGI), used for aerodynamic performance assessment of inhalation products, with a culture of human alveolar A549 epithelial cells to study the fate of inhaled drugs following lung deposition. The goal was to investigate five previously developed nano-milled and spray-dried budesonide formulations and to examine the suitability of the in vitro test model. The NGI dissolution cups of stages 3, 4, and 5 were transformed to accommodate cell culture inserts while assuring minimal interference with the air flow. A549 cells were cultivated at the air–liquid interface on Corning® Matrigel® -coated inserts. After deposition of aerodynamically classified powders on the cell cultures, budesonide amount was determined on the cell surface, in the interior of the cell monolayer, and in the basal solution for four to eight hours. Significant differences in the total deposited drug amount and the amount remaining on the cell surface at the end of the experiment were found between different formulations and NGI stages. Roughly 50% of budesonide was taken up by the cells and converted to a large extent to its metabolic conjugate with oleic acid for all formulations and stages. Prolonged time required for complete drug dissolution and cell uptake in case of large deposited powder amounts suggested initial drug saturation of the surfactant layer of the cell surface. Discrimination between formulations with respect to time scale of dissolution and cell uptake was possible with the present test model providing useful insights into the biopharmaceutical performance of developed formulations that may be relevant for predicting local bioavailability. The absolute quantitative result of cell uptake and permeation into the systemic compartment is unreliable, though, because of partly compromised cell membrane integrity due to particle impaction and professed leakiness of A549 monolayer tight junctions, respectively.
AUTHOR
Year
2015
Journal/Proceedings
Scientific reports
Reftype
DOI/URL
URL
Groups
AbstractIntensive efforts in recent years to develop and commercialize in vitro alternatives in the field of risk assessment have yielded new promising two- and three dimensional (3D) cell culture models. Nevertheless, a realistic 3D in vitro alveolar model is not available yet. Here we report on the biofabrication of the human air-blood tissue barrier analogue composed of an endothelial cell, basement membrane and epithelial cell layer by using a bioprinting technology. In contrary to the manual method, we demonstrate that this technique enables automatized and reproducible creation of thinner and more homogeneous cell layers, which is required for an optimal air-blood tissue barrier. This bioprinting platform will offer an excellent tool to engineer an advanced 3D lung model for high-throughput screening for safety assessment and drug efficacy testing.