Evidence map›Paper›PMID 22139975›Full record

ArticleBiotechnology and bioengineering2012

Rational bioprocess design for human pluripotent stem cell expansion and endoderm differentiation based on cellular dynamics.

Mark D Ungrin, Geoff Clarke, Ting Yin, Sylvia Niebrugge, M Cristina Nostro, Farida Sarangi, Geoffrey Wood, Gordon Keller, Peter W Zandstra

Abstract readEditorial
In one paragraph

Article in Biotechnology and bioengineering, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed, 1 pooled it
–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

26 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
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  12. Chemically controlled aggregation of pluripotent stem cells.Biotechnology and bioengineering · 2018
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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

9 authors.

Mark D UngrinInstitute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, Ontario, Canada.
Geoff Clarke
Ting Yin
Sylvia Niebrugge
M Cristina Nostro
Farida Sarangi
Geoffrey Wood
Gordon Keller
Peter W Zandstra

Funding

Generation of functional beta cells from stem and progenitor cellsU01DK089561 · NIDDK · UNIVERSITY HEALTH NETWORK · PI KELLER, GORDON, STREETER, PHILIP R · 2010 to 2014
$3.9M
CIHR MOP-57885NIDDK NIH HHS U01 DK089561NIDDK NIH HHS UO1 DK089561
6 · The paper itself

Abstract

We present a predictive bioprocess design strategy employing cell- and molecular-level analysis of rate-limiting steps in human pluripotent stem cell (hPSC) expansion and differentiation, and apply it to produce definitive endoderm (DE) progenitors using a scalable directed-differentiation technology. We define a bioprocess optimization parameter (L; targeted cell Loss) and, with quantitative cell division tracking and fate monitoring, identify and overcome key suspension bioprocess bottlenecks. Adapting process operating conditions to pivotal parameters (single cell survival and growth rate) in a cell-line-specific manner enabled adherent-equivalent expansion of hPSCs in feeder- and matrix-free defined-medium suspension culture. Predominantly instructive differentiation mechanisms were found to underlie a subsequent 18-fold expansion, during directed differentiation, to high-purity DE competent for further commitment along pancreatic and hepatic lineages. This study demonstrates that iPSC expansion and differentiation conditions can be prospectively specified to guide the enhanced production of target cells in a scale-free directed differentiation system.

Indexed as

Batch Cell Culture TechniquesAnimalsAntigens, DifferentiationCell AggregationCell CycleCell DifferentiationCell DivisionCell LineCoculture TechniquesCulture MediaEndodermFibroblastsHepatocytesHumansMicePancreasAntigens, DifferentiationCulture MediaSuspensions

Identifiers

PMID22139975
PMCPMC3321926

What OpenQuestion holds

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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.