From Microfluidics to 3D Bioprinting for Human/Organs- on ... · From Microfluidics to 3D...
Transcript of From Microfluidics to 3D Bioprinting for Human/Organs- on ... · From Microfluidics to 3D...
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From Microfluidics to 3D Bioprinting for Human/Organs-
on-Chips DevelopmentAmsterdam, 11-12th, December, 2018
Dinh Ngoc Duy
Department of Biomedical Engineering
National University of Singapore
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Outline
Reconstruction of Human/Organs Function
Microfluidic Technology
3D Bioprinting
Part 1: Brain/neuron-on-Chip (Miniaturisation for Life Sciences Group, Institute of
Analytical Science, Dortmund, Germany.
Collaboration with Dr. Jean-Michel. Peyrin
(neurobiologist, Institute of Biology Paris-Seine,
France) who founded the MicroBrain
Biotech company and Neurotoxicology and
Chemosensation Group, Leibniz, Germany)
Part 2: NIR Laser
Bioprinting- Light
assembly (NUS, Singapore)
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Why microfluidic devices are
great tool for cell neurobiology?
The neuron system to investigate
disease propagation:
infectious agents, pronsm herpes
and rabies virus
Degeneration , alpha synuclein in
Parkinson and amyloid beta in
Alzheimers
Toxicity nanoparticles as manganese
propagation
Part 1:
PNAS,1977, CAMPENOT, Department of Neurobiology, Harvard Medical
Taylor et al Nature Methods, 2,599–605 (2005)
Microfluidic chips: transparent,
to precisely control, monitor
and manipulate cellular
microenvironments, fluidic
perfusion
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Limitations of current Microfluidic Chips
for Neuron
Tens of thousands of neurons to
attain significant numbers of inter-
compartment connections.
Neurons (<5%) extend outgrowths
between compartments.
High throughput studies would
require the sacrifice of multiple
animals with data analysis
complicated by inter-individual
variance.
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Brain/Neuron-on-Chip–ISAS, Germany
Microfluidic Circuit Meniscus Pinning – Water MaskChip Image
Precise control the number of cells in each compartment by differential flow
microfluidics
Integrated a novel biomaterial co-patterning method for cell patterning inside
the microfluidic chip, promote neuron interconnection
Fluidic isolation using hydrostatic pressure control and aspiration methods.
Define a neuronal network high level intercompartment connectivity
Cell number is defined and minimal (dopamine cells and substantia nigra cells
for Parkinson’s disease or peripheral neurons) (10–100-fold less than existing
systems)
Dinh Ngoc Duy et al Lab Chip, 2013,13, 1402-1412; JoVE, 2014, Springer Book, 2015
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Co-Patterning with PLL-g-PEG-TRITC
1. PLL-FITC
2. Water Mask /
Plasma
3. PLL-g-PEG-
TRITC
1. PLL
2. Water Mask /
Plasma
3. PLL-g-PEG-
TRITC
4. Avidin FITC
Illustration of the water masking concept and results
Biomaterial Co-Patterning
Dinh Ngoc Duy et al Lab Chip, 2013,13, 1402-1412; JoVE, 2014, Springer Book, 2015
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Dinh Ngoc Duy et al Lab Chip, 2013,13, 1402-1412; JoVE, 2014, Springer Book, 2015
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Neuron Cells Loading
Dinh Ngoc Duy et al Lab Chip, 2013,13, 1402-1412; JoVE, 2014, Springer Book, 2015
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Cells Loading
Dinh Ngoc Duy et al Lab Chip, 2013,13, 1402-1412; JoVE, 2014, Springer Book, 2015
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Neurite in
Patterning chip
go through
microgroove
channel more
than
unpatterning
Dinh Ngoc Duy et al Lab Chip, 2013,13, 1402-1412; JoVE, 2014, Springer Book, 2015
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Neuron culture
on chip cells
day 14
2,3-compartment
chip
Dinh Ngoc Duy et al Lab Chip, 2013,13, 1402-1412; JoVE, 2014, Springer Book, 2015
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Applications: disease propagation: infectious agents,
Parkinson, Alzheimer, manganese propagation
Dinh Ngoc Duy et al JoVE, 2014
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Impacts & Potential Application
-The dissemination of aggregated molecules from one neuron to the
others and protein transport between neurons and glial cells. (Prof
Tsuneya Ikezu, MD, PhD, Alzheimer's Disease Center, Boston University
School of Medicine)
- To understand the mechanisms involved in the propagation of
hyperphosphorylated tau, β-amyloid and long-range BNDF-mediated
signalling.
Dinh Ngoc Duy et al Lab Chip, 2013,13, 1402-1412; JoVE, 2014, Springer Book, 2015
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Integrate to Neurovascular unit
I. Investigate the dissemination of aggregated molecules
from one neuron to the others and protein transport
between neurons and glial cells
II. Integrate Cerebral Organoid (Glioma stem cell) in
microfluidic neurovascular model to study how thepatient’s tumor develop and react to treatment
III. To study how immune cell enter the brain and interact with neuron
IV. To evaluate immunotherapy for brain cancer and evaluating
therapeutic antibodies, which are delivered through BBB
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Part 2: 3D bioprinting for Reconstruction of
Human/Organs Function
Computer designed 3D
structures
Automated process,
repeatability.
Programmable
approach
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Challenge of 3D Bio-Printing:
Resolution
Liver Lobule
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Adv. Healthcare Mater. 2015,
Schematic view of bottom-up assembled organs from
modular tissue composed of diverse cell types
Rebuilding the Body, Nature
Outlook Technology: The
promise of printing
Herb Brody et al Nature, 2016
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Trends in Biotechnology May 2015, Vol. 33, No. 5
Corresponding technologies for assembling
building blocks at different scales
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A NIR Laser Bioprinting - Light
Directed Assembly Building Blocks
in Microscale
Ultra precise, High-
throughput control in
Micro-Objects (~ 100
µm)
Low laser power,
less damage
biological sample
Dinh Ngoc-Duyet al Small, 2017
Part 2:
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Photothermal Convection: solve differentiation
equations: electromagnetic (EM), heat transfer (HT) and
fluid mechanics (FM)
Dinh Ngoc-Duyet al Small, 2017
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High spatial control- Single Micro-
Particles manipulation
Scale bar:100 µm
Dinh Ngoc-Duyet al Small, 2017
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High throughput Assembly- Microparticle Hydrogel
Writing Patterns
Scale bars:
(b, e, f, h, i, k) 6 mm,
(d) 200 µm, (l) 400
µm
Dinh Ngoc-Duyet al Small, 2017
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NIR Laser Assembling building blocks forming
Desired Patterns
Dinh Ngoc-Duyet al Small, 2017
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Bottom up Tissue Engineering Approach
Mesenchymal stem cells seeded hydrogel particle
assembly
Scale bars:
(a) 30 µm,
(d) 120
µm.
Dinh Ngoc-Duyet al Small, 2017
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Conclusions and Outlooks : potential to
revolutionize the 3D bioprinting technologies
We are negotiating with Fluxbio, a 3D Bioprinting start-up company based on
Electrospray technology for commercialization
Featured in Small, Wiley AdvancedScienceNews , 3D printer and 3D printing
news(3ders.org); 3Dprint.com; NanoHybrids, 3dprintingindustry.com
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NIR Laser 3D-Bioprinting
(developing)
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Commercial Companies
Lab Chip, 2017,17,2395-2420
Summary
Precise control the number of
cells in each compartment
Define a neuronal network high
level intercompartment connectivity
Cell number is defined and
minimal
Neuron Microfluidic Chip
NIR Light Bioprinting
High resolution and high
throughput control
Potential to revolutionize the 3D
bioprinting technologies
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Thank you for your attention