Evidence map›Paper›PMID 32445290›Full record

ArticleStem cells translational medicine2020

Optimized serial expansion of human induced pluripotent stem cells using low-density inoculation to generate clinically relevant quantities in vertical-wheel bioreactors.

Breanna S Borys, Tania So, James Colter, Tiffany Dang, Erin L Roberts, Tamas Revay, Leila Larijani, Roman Krawetz, Ian Lewis, Bob Argiropoulos and 5 more

Abstract read
In one paragraph

Article in Stem cells translational medicine, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 34 papers.

0numbers the graph read from it
0cells of the map it votes in
34citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

34 citing papers in PubMed.

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  17. Harnessing developmental cues for cardiomyocyte production.Development (Cambridge, England) · 2023
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

15 authors.

Breanna S BorysPharmaceutical Production Research Facility, Schulich School of Engineering, University of Calgary, Calgary, Alberta, Canada.
Tania SoPharmaceutical Production Research Facility, Schulich School of Engineering, University of Calgary, Calgary, Alberta, Canada.
James ColterPharmaceutical Production Research Facility, Schulich School of Engineering, University of Calgary, Calgary, Alberta, Canada.
Tiffany DangPharmaceutical Production Research Facility, Schulich School of Engineering, University of Calgary, Calgary, Alberta, Canada.
Erin L RobertsPharmaceutical Production Research Facility, Schulich School of Engineering, University of Calgary, Calgary, Alberta, Canada.
Tamas RevayDepartment of Medical Genetics, Alberta Health Services, Alberta Children's Hospital, Calgary, Alberta, Canada.
Leila LarijaniDepartment of Medical Genetics, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada.
Roman KrawetzDepartment of Cell Biology and Anatomy, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada.
Ian LewisDepartment of Biological Sciences, University of Calgary, Calgary, Alberta, Canada.
Bob ArgiropoulosDepartment of Medical Genetics, Alberta Health Services, Alberta Children's Hospital, Calgary, Alberta, Canada.
Derrick E RancourtDepartment of Medical Genetics, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada.
Sunghoon JungPBS Biotech Inc., Camarillo, California, USA.
Yas HashimuraPBS Biotech Inc., Camarillo, California, USA.
Brian LeePBS Biotech Inc., Camarillo, California, USA.
Michael S KallosPharmaceutical Production Research Facility, Schulich School of Engineering, University of Calgary, Calgary, Alberta, Canada.ORCID 0000-0002-1480-8022

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Human induced pluripotent stem cells (hiPSCs) have generated a great deal of attention owing to their capacity for self-renewal and differentiation into the three germ layers of the body. Their discovery has facilitated a new era in biomedicine for understanding human development, drug screening, disease modeling, and cell therapy while reducing ethical issues and risks of immune rejection associated with traditional embryonic stem cells. Bioreactor-based processes have been the method of choice for the efficient expansion and differentiation of stem cells in controlled environments. Current protocols for the expansion of hiPSCs use horizontal impeller, paddle, or rocking wave mixing method bioreactors which require large static cell culture starting populations and achieve only moderate cell fold increases. This study focused on optimizing inoculation, agitation, oxygen, and nutrient availability for the culture of hiPSCs as aggregates in single-use, low-shear, vertical-wheel bioreactors. Under optimized conditions, we achieved an expansion of more than 30-fold in 6 days using a small starting population of cells and minimal media resources throughout. Importantly, we showed that that this optimized bioreactor expansion protocol could be replicated over four serial passages resulting in a cumulative cell expansion of 1.06E6-fold in 28 days. Cells from the final day of the serial passage were of high quality, maintaining a normal karyotype, pluripotent marker staining, and the ability to form teratomas in vivo. These findings demonstrate that a vertical-wheel bioreactor-based bioprocess can provide optimal conditions for efficient, rapid generation of high-quality hiPSCs to meet the demands for clinical manufacturing of therapeutic cell products.

Indexed as

BioreactorsAnimalsBiomarkersCell AggregationCell Culture TechniquesCell ProliferationCells, CulturedCell SurvivalHumansInduced Pluripotent Stem CellsInfantKineticsMice, SCIDOxygenTeratomaBiomarkersOxygenbioreactorexpansionhuman induced pluripotent stem cells (hiPSCs)low-shearserial-passage

Identifiers

PMID32445290
PMCPMC7445025

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.