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You are researching: DTU - Technical University of Denmark
Inducend Pluripotent Stem Cells (IPSCs)
Drug Discovery
Cancer Cell Lines
Cell Type
Tissue and Organ Biofabrication
Skin Tissue Engineering
Drug Delivery
Biological Molecules
Solid Dosage Drugs
Stem Cells
Personalised Pharmaceuticals
All Groups
- Biomaterials & Bioinks
- Application
- Bioelectronics
- Biomaterial Processing
- Tissue Models – Drug Discovery
- Industrial
- Drug Discovery
- In Vitro Models
- Robotics
- Electronics – Robotics – Industrial
- Medical Devices
- Tissue and Organ Biofabrication
- Drug Delivery
- Urethra Tissue Engineering
- Skin Tissue Engineering
- Uterus Tissue Engineering
- Nerve – Neural Tissue Engineering
- Meniscus Tissue Engineering
- Heart – Cardiac Patches Tissue Engineering
- Adipose Tissue Engineering
- Trachea Tissue Engineering
- Ocular Tissue Engineering
- Intervertebral Disc (IVD) Tissue Engineering
- Muscle Tissue Engineering
- Liver tissue Engineering
- Cartilage Tissue Engineering
- Bone Tissue Engineering
- Dental Tissue Engineering
- BioSensors
- Personalised Pharmaceuticals
- Review Paper
- Printing Technology
- Biomaterial
- Thermoplastics
- Coaxial Extruder
- Non-cellularized gels/pastes
- Poly(vinyl alcohol) (PVA)
- PEDOT
- Jeffamine
- Poly(methyl methacrylate) (PMMA)
- Polyethylene
- SEBS
- Polypropylene Oxide (PPO)
- Carbopol
- Sucrose Acetate
- Epoxy
- poly (ethylene-co -vinyl acetate) (PEVA)
- Poly(itaconate-co-citrate-cooctanediol) (PICO)
- Poly(N-isopropylacrylamide) (PNIPAAm)
- Mineral Oil
- poly(octanediol-co-maleic anhydride-co-citrate) (POMaC)
- Poly(Oxazoline)
- Poly(trimethylene carbonate)
- 2-hydroxyethyl) methacrylate (HEMA)
- Zein
- Acrylamide
- Pluronic – Poloxamer
- Polyisobutylene
- Paraffin
- Silicone
- Konjac Gum
- Polyphenylene Oxide
- Ionic Liquids
- Polyvinylpyrrolidone (PVP)
- Gelatin-Sucrose Matrix
- Salt-based
- Chlorella Microalgae
- Acrylates
- Poly(Vinyl Formal)
- 2-hydroxyethyl-methacrylate (HEMA)
- Phenylacetylene
- Magnetorheological fluid (MR fluid – MRF)
- Salecan
- Micro/nano-particles
- Biological Molecules
- Bioinks
- Collagen
- Elastin
- Heparin
- sulfobetaine methacrylate (SBMA)
- Gelatin
- Matrigel
- Gellan Gum
- Methacrylated Chitosan
- Methacrylated hyaluronic acid (HAMA)
- Pectin
- Silk Fibroin
- Pyrogallol
- Xanthan Gum
- Fibrinogen
- Fibrin
- Paeoniflorin
- Fibronectin
- (2-Hydroxypropyl)methacrylamide (HPMA)
- Methacrylated Collagen (CollMA)
- Carrageenan
- Glucosamine
- Chitosan
- Glycerol
- Poly(glycidol)
- Alginate
- Agarose
- Gelatin-Methacryloyl (GelMA)
- methacrylated chondroitin sulfate (CSMA)
- Cellulose
- Novogel
- carboxybetaine acrylamide (CBAA)
- Hyaluronic Acid
- Peptide gel
- Methacrylated Silk Fibroin
- Pantoan Methacrylate
- Polyethylene glycol (PEG) based
- α-Bioink
- Poly(Acrylic Acid)
- Ceramics
- Decellularized Extracellular Matrix (dECM)
- Metals
- Solid Dosage Drugs
- Bioprinting Technologies
- Bioprinting Applications
- Cell Type
- Stem Cells
- Spheroids
- Meniscus Cells
- Synoviocytes
- Keratinocytes
- Skeletal Muscle-Derived Cells (SkMDCs)
- Neurons
- Macrophages
- Human Trabecular Meshwork Cells
- Endothelial
- CardioMyocites
- Melanocytes
- Retinal
- Chondrocytes
- Embrionic Kidney (HEK)
- Corneal Stromal Cells
- Annulus Fibrosus Cells
- Fibroblasts
- β cells
- Astrocytes
- Myoblasts
- Pericytes
- Hepatocytes
- Cancer Cell Lines
- Bacteria
- Epicardial Cells
- Articular cartilage progenitor cells (ACPCs)
- Tenocytes
- Extracellular Vesicles
- Osteoblasts
- Monocytes
- Mesothelial cells
- Nucleus Pulposus Cells
- Epithelial
- Neutrophils
- Adipocytes
- Smooth Muscle Cells
- T cells
- Human Umbilical Vein Endothelial Cells (HUVECs)
- Organoids
- Institution
- ETH Zurich
- Hallym University
- Nanjing Medical University
- University of Bordeaux
- Innsbruck University
- Nanyang Technological University
- National Institutes of Health (NIH)
- Ningbo Institute of Materials Technology and Engineering (NIMTE)
- KU Leuven
- Politecnico di Torino
- Utrecht Medical Center (UMC)
- Rizzoli Orthopaedic Institute
- Queen Mary University
- Veterans Administration Medical Center
- University of Manchester
- University of Bucharest
- Royal Free Hospital
- Hong Kong University
- University of Barcelona
- Chinese Academy of Sciences
- ENEA
- University of Nottingham
- University of Geneva
- SINTEF
- Rice University
- Jiangsu University
- Trinity College
- Novartis
- University of Central Florida
- Hefei University
- Leibniz University Hannover
- Chalmers University of Technology
- Karlsruhe institute of technology
- University of Freiburg
- Helmholtz Institute for Pharmaceutical Research Saarland
- Leipzig University
- AO Research Institute (ARI)
- Shanghai University
- Univerity of Hong Kong
- University of Toronto
- Brown University
- Polish Academy of Sciences
- University of Wurzburg
- Technical University of Dresden
- University of Nantes
- Montreal University
- Shandong Medical University
- Institute for Bioengineering of Catalonia (IBEC)
- University of Michigan – School of Dentistry
- Myiongji University
- Harbin Institute of Technology
- Technical University of Berlin
- University of Amsterdam
- University of Tel Aviv
- University of Applied Sciences Northwestern Switzerland
- Anhui Polytechnic
- University Children's Hospital Zurich
- Bayreuth University
- Aschaffenburg University
- University of Michigan, Biointerfaces Institute
- Abu Dhabi University
- Jiao Tong University
- University of Aveiro
- Ghent University
- Chiao Tung University
- Sree Chitra Tirunal Institute
- University of Sheffield
- University of Michigan – Biointerfaces Institute
- National University of Singapore
- CIC biomaGUNE
- Kaohsiung Medical University
- DTU – Technical University of Denmark
- University of Taiwan
- Adolphe Merkle Institute Fribourg
- Halle-Wittenberg University
- Baylor College of Medicine
- INM – Leibniz Institute for New Materials
- National Yang Ming Chiao Tung University
- University of Vilnius
- Zurich University of Applied Sciences (ZHAW)
- Innotere
- L'Oreal
- Tiangong University
- Xi’an Children’s Hospital
AUTHOR
Title
Multi-material 3D printing of programmable and stretchable oromucosal patches for delivery of saquinavir
[Abstract]
Year
2021
Journal/Proceedings
International Journal of Pharmaceutics
Reftype
Groups
AbstractOromucosal patches for drug delivery allow fast onset of action and ability to circumvent hepatic first pass metabolism of drugs. While conventional fabrication methods such as solvent casting or hot melt extrusion are ideal for scalable production of low-cost delivery patches, these methods chiefly allow for simple, homogenous patch designs. As alternative, a multi-material direct-ink-write 3D printing for rapid fabrication of complex oromucosal patches with unique design features was demonstrated in the present study. Specifically, three print-materials: an acidic saquinavir-loaded hydroxypropyl methylcellulose ink, an alkaline effervescent sodium carbonate-loaded ink, and a methyl cellulose backing material were combined in various designs. The CO2 content and pH of the microenvironment were controlled by adjusting the number of alkaline layers in the patch. Additionally, the rigid and brittle patches were converted to compliant and stretchable patches by implementing mesh-like designs. Our results illustrate how 3D printing can be used for rapid design and fabrication of multifunctional or customized oromucosal patches with tailored dosages and changed drug permeation.
AUTHOR
Title
3D-Printed Soft Lithography for Complex Compartmentalized Microfluidic Neural Devices
[Abstract]
Year
2020
Journal/Proceedings
Advanced Science
Reftype
DOI/URL
DOI
Groups
AbstractAbstract Compartmentalized microfluidic platforms are an invaluable tool in neuroscience research. However, harnessing the full potential of this technology remains hindered by the lack of a simple fabrication approach for the creation of intricate device architectures with high-aspect ratio features. Here, a hybrid additive manufacturing approach is presented for the fabrication of open-well compartmentalized neural devices that provides larger freedom of device design, removes the need for manual postprocessing, and allows an increase in the biocompatibility of the system. Suitability of the method for multimaterial integration allows to tailor the device architecture for the long-term maintenance of healthy human stem-cell derived neurons and astrocytes, spanning at least 40 days. Leveraging fast-prototyping capabilities at both micro and macroscale, a proof-of-principle human in vitro model of the nigrostriatal pathway is created. By presenting a route for novel materials and unique architectures in microfluidic systems, the method provides new possibilities in biological research beyond neuroscience applications.
AUTHOR
Title
Soft Electronic Block Copolymer Elastomer Composites for Multi-Material Printing of Stretchable Physiological Sensors on Textiles
[Abstract]
Year
2023
Journal/Proceedings
Advanced Electronic Materials
Reftype
DOI/URL
DOI
Groups
AbstractAbstract Soft and stretchable electronic materials have a number of unique applications, not least within sensors for monitoring human health. Through development of appropriate inks, micro-extrusion 3D printing offers an appealing route for integrating soft electronic materials within wearable garments. Toward this objective, here a series of conductive inks based on soft thermoplastic styrene–ethylene–butylene–styrene elastomers combined with silver micro-flakes, carbon black nanoparticles, or poly(3,4-ethylenedioxythiophene) (PEDOT) conducting polymer additives, is developed. Their electrical and mechanical properties are systematically compared and found to be highly dependent on additive amount and type. Thus, while silver composites offer the highest conductivity, their stretchability is far inferior to carbon black composites, which can maintain conductivity beyond 400% strain. The PEDOT composites are the least conductive and stretchable but display unique properties due to their propensity for ionic conductivity. To integrate these inks, as well as insulating counterparts, into functional designs, a multi-material micro-extrusion 3D printing routine for direct deposition onto stretchable, elastic fabrics is established. As demonstration, prototypes are produced for sensing common health markers including strain, physiological temperatures, and electrocardiograms. Collectively, this work demonstrates multi-material 3D printing of soft styrene–ethylene–butylene–styrene elastomer composites as a versatile method for fabricating soft bio-sensors.
AUTHOR
Title
Embedded 3D Printing in Self-Healing Annealable Composites for Precise Patterning of Functionally Mature Human Neural Constructs
[Abstract]
Year
2022
Journal/Proceedings
Advanced Science
Reftype
DOI/URL
DOI
Groups
AbstractAbstract Human in vitro models of neural tissue with tunable microenvironment and defined spatial arrangement are needed to facilitate studies of brain development and disease. Towards this end, embedded printing inside granular gels holds great promise as it allows precise patterning of extremely soft tissue constructs. However, granular printing support formulations are restricted to only a handful of materials. Therefore, there has been a need for novel materials that take advantage of versatile biomimicry of bulk hydrogels while providing high-fidelity support for embedded printing akin to granular gels. To address this need, Authors present a modular platform for bioengineering of neuronal networks via direct embedded 3D printing of human stem cells inside Self-Healing Annealable Particle-Extracellular matrix (SHAPE) composites. SHAPE composites consist of soft microgels immersed in viscous extracellular-matrix solution to enable precise and programmable patterning of human stem cells and consequent generation mature subtype-specific neurons that extend projections into the volume of the annealed support. The developed approach further allows multi-ink deposition, live spatial and temporal monitoring of oxygen levels, as well as creation of vascular-like channels. Due to its modularity and versatility, SHAPE biomanufacturing toolbox has potential to be used in applications beyond functional modeling of mechanically sensitive neural constructs.
AUTHOR
Title
Enhancing volumetric muscle loss (VML) recovery in a rat model using super durable hydrogels derived from bacteria
[Abstract]
Year
2024
Journal/Proceedings
Bioactive Materials
Reftype
Groups
AbstractBacteria can be programmed to deliver natural materials with defined biological and mechanical properties for controlling cell growth and differentiation. Here, we present an elastic, resilient and bioactive polysaccharide derived from the extracellular matrix of Pantoea sp. BCCS 001. Specifically, it was methacrylated to generate a new photo crosslinkable hydrogel that we coined Pantoan Methacrylate or put simply PAMA. We have used it for the first time as a tissue engineering hydrogel to treat VML injuries in rats. The crosslinked PAMA hydrogel was super elastic with a recovery nearing 100 %, while mimicking the mechanical stiffness of native muscle. After inclusion of thiolated gelatin via a Michaelis reaction with acrylate groups on PAMA we could also guide muscle progenitor cells into fused and aligned tubes – something reminiscent of mature muscle cells. These results were complemented by sarcomeric alpha-actinin immunostaining studies. Importantly, the implanted hydrogels exhibited almost 2-fold more muscle formation and 50 % less fibrous tissue formation compared to untreated rat groups. In vivo inflammation and toxicity assays likewise gave rise to positive results confirming the biocompatibility of this new biomaterial system. Overall, our results demonstrate that programmable polysaccharides derived from bacteria can be used to further advance the field of tissue engineering. In greater detail, they could in the foreseeable future be used in practical therapies against VML.
AUTHOR
Title
Prefrontal electrophysiological biomarkers and mechanism-based drug effects in a rat model of alcohol addiction
[Abstract]
Year
2024
Journal/Proceedings
Translational Psychiatry
Reftype
Habelt2024
DOI/URL
DOI
Groups
AbstractPatients with alcohol use disorder (AUD) who seek treatment show highly variable outcomes. A precision medicine approach with biomarkers responsive to new treatments is warranted to overcome this limitation. Promising biomarkers relate to prefrontal control mechanisms that are severely disturbed in AUD. This results in reduced inhibitory control of compulsive behavior and, eventually, relapse. We reasoned here that prefrontal dysfunction, which underlies vulnerability to relapse, is evidenced by altered neuroelectric signatures and should be restored by pharmacological interventions that specifically target prefrontal dysfunction. To test this, we applied our recently developed biocompatible neuroprosthesis to measure prefrontal neural function in a well-established rat model of alcohol addiction and relapse. We monitored neural oscillations and event-related potentials in awake alcohol-dependent rats during abstinence and following treatment with psilocybin or LY379268, agonists of the serotonin 2A receptor (5-HT2AR), and the metabotropic glutamate receptor 2 (mGluR2), that are known to reduce prefrontal dysfunction and relapse. Electrophysiological impairments in alcohol-dependent rats are reduced amplitudes of P1N1 and N1P2 components and attenuated event-related oscillatory activity. Psilocybin and LY379268 were able to restore these impairments. Furthermore, alcohol-dependent animals displayed a dominance in higher beta frequencies indicative of a state of hyperarousal that is prone to relapse, which particularly psilocybin was able to counteract. In summary, we provide prefrontal markers indicative of relapse and treatment response, especially for psychedelic drugs.
AUTHOR
Year
2023
Journal/Proceedings
ACS Appl. Mater. Interfaces
Reftype
DOI/URL
DOI
Groups
AbstractFor three-dimensional (3D) bioprinting to fulfill its promise and enable the automated fabrication of complex tissue-mimicking constructs, there is a need for developing bioinks that are not only printable and biocompatible but also have integrated cell-instructive properties. Toward this goal, we here present a scalable technique for generating nanofiber 3D printing inks with unique tissue-guiding capabilities. Our core methodology relies on tailoring the size and dispersibility of cellulose fibrils through a solvent-controlled partial carboxymethylation. This way, we generate partially negatively charged cellulose nanofibers with diameters of ∼250 nm and lengths spanning tens to hundreds of microns. In this range, the fibers structurally match the size and dimensions of natural collagen fibers making them sufficiently large to orient cells. Yet, they are simultaneously sufficiently thin to be optically transparent. By adjusting fiber concentration, 3D printing inks with excellent shear-thinning properties can be established. In addition, as the fibers are readily dispersible, composite inks with both carbohydrates and extracellular matrix (ECM)-derived proteins can easily be generated. We apply such composite inks for 3D printing cell-laden and cross-linkable structures, as well as tissue-guiding gel substrates. Interestingly, we find that the spatial organization of engineered tissues can be defined by the shear-induced alignment of fibers during the printing procedure. Specifically, we show how myotubes derived from human and murine skeletal myoblasts can be programmed into linear and complex nonlinear architectures on soft printed substrates with intermediate fiber contents. Our nanofibrillated cellulose inks can thus serve as a simple and scalable tool for engineering anisotropic human muscle tissues that mimic native structure and function.
AUTHOR
Title
A simple and scalable 3D printing methodology for generating aligned and extended human and murine skeletal muscle tissues
[Abstract]
Year
2022
Journal/Proceedings
Biomedical Materials
Reftype
DOI/URL
DOI
Groups
AbstractPreclinical biomedical and pharmaceutical research on disease causes, drug targets, and side effects increasingly relies on in vitro models of human tissue. 3D printing offers unique opportunities for generating models of superior physiological accuracy, as well as for automating their fabrication. Towards these goals, we here describe a simple and scalable methodology for generating physiologically relevant models of skeletal muscle. Our approach relies on dual-material micro-extrusion of two types of gelatin hydrogel into patterned soft substrates with locally alternating stiffness. We identify minimally complex patterns capable of guiding the large-scale self-assembly of aligned, extended, and contractile human and murine skeletal myotubes. Interestingly, we find high-resolution patterning is not required, as even patterns with feature sizes of several hundred micrometers is sufficient. Consequently, the procedure is rapid and compatible with any low-cost extrusion-based 3D printer. The generated myotubes easily span several millimeters, and various myotube patterns can be generated in a predictable and reproducible manner. The compliant nature and adjustable thickness of the hydrogel substrates, serves to enable extended culture of contractile myotubes. The method is further readily compatible with standard cell-culturing platforms as well as commercially available electrodes for electrically induced exercise and monitoring of the myotubes.