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Rapid Production and Recovery of Cell Spheroids by Automated Droplet Microfluidics
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Protein Science, Nano Biotechnology. KTH, Centres, Science for Life Laboratory, SciLifeLab.
KTH, Centres, Science for Life Laboratory, SciLifeLab. KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Protein Science, Nano Biotechnology. KTH, Novo Nordisk Fdn Ctr Biosustainabil, Stockholm, Sweden.ORCID iD: 0000-0001-5232-0805
2019 (English)In: SLAS TECHNOLOGY, ISSN 2472-6303, article id UNSP 2472630319877376Article in journal (Refereed) Published
Abstract [en]

The future of the life sciences is linked to automation and microfluidics. As robots start working side by side with scientists, robotic automation of microfluidics in general, and droplet microfluidics in particular, will significantly extend and accelerate the life sciences. Here, we demonstrate the automation of droplet microfluidics using an inexpensive liquid-handling robot to produce human scaffold-free cell spheroids at high throughput. We use pipette actuation and interface the pipetting tip with a droplet-generating microfluidic device. In this device, we produce highly monodisperse droplets with a diameter coefficient of variation (CV) lower than 2%. By encapsulating cells in these droplets, we produce cell spheroids in droplets and recover them to standard labware containers at a throughput of 85,000 spheroids per microfluidic circuit per hour. The viability of the cells in spheroids remains high throughout the process and decreases by >10% (depending on the cell line used) after a 16 h incubation period in nanoliter droplets and automated recovery. Scaffold-free cell spheroids and 3D tissue constructs recapitulate many aspects of functional human tissue more accurately than 2D or single-cell cultures, but assembly methods for spheroids (e.g., hanging drop microplates) have limited throughput. The increased throughput and decreased cost of our method enable spheroid production at the scale needed for lead discovery drug screening, and approach the cost at which these microtissues could be used as building blocks for organ-scale regenerative medicine.

Place, publisher, year, edition, pages
Sage Publications, 2019. article id UNSP 2472630319877376
National Category
Medical Laboratory and Measurements Technologies Nano Technology Pharmaceutical Biotechnology
Identifiers
URN: urn:nbn:se:kth:diva-260566DOI: 10.1177/2472630319877376ISI: 000489377000001Scopus ID: 2-s2.0-85074039766OAI: oai:DiVA.org:kth-260566DiVA, id: diva2:1355957
Funder
VinnovaScience for Life Laboratory - a national resource center for high-throughput molecular bioscienceAvailable from: 2019-09-30 Created: 2019-09-30 Last updated: 2020-02-04Bibliographically approved

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