Evidence map›Paper›PMID 22380681›Full record

ArticleBMC biology2012

Imbalance of heterologous protein folding and disulfide bond formation rates yields runaway oxidative stress.

Keith E J Tyo, Zihe Liu, Dina Petranovic, Jens Nielsen

Open access · goldAbstract read
In one paragraph

Article in BMC biology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 45 papers.

0numbers the graph read from it
0cells of the map it votes in
45citing papers in PubMed
4.2field-weighted citation impact, top 5% of its field
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

45 citing papers in PubMed, 102 citations in OpenAlex.

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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

4 authors at 2 institutions in 2 countries.

Keith E J TyoDepartment of Chemical and Biological Engineering, Chalmers University of Technology, Kemivägen 10, SE-41296 Göteborg, Sweden.
Zihe Liu
Dina Petranovic
Jens Nielsen
Chalmers University of Technology · SENorthwestern University · US

Funding

European Research Council 247013
6 · The paper itself

Abstract

backgroundThe protein secretory pathway must process a wide assortment of native proteins for eukaryotic cells to function. As well, recombinant protein secretion is used extensively to produce many biologics and industrial enzymes. Therefore, secretory pathway dysfunction can be highly detrimental to the cell and can drastically inhibit product titers in biochemical production. Because the secretory pathway is a highly-integrated, multi-organelle system, dysfunction can happen at many levels and dissecting the root cause can be challenging. In this study, we apply a systems biology approach to analyze secretory pathway dysfunctions resulting from heterologous production of a small protein (insulin precursor) or a larger protein (α-amylase).

resultsHAC1-dependent and independent dysfunctions and cellular responses were apparent across multiple datasets. In particular, processes involving (a) degradation of protein/recycling amino acids, (b) overall transcription/translation repression, and (c) oxidative stress were broadly associated with secretory stress.

conclusionsApparent runaway oxidative stress due to radical production observed here and elsewhere can be explained by a futile cycle of disulfide formation and breaking that consumes reduced glutathione and produces reactive oxygen species. The futile cycle is dominating when protein folding rates are low relative to disulfide bond formation rates. While not strictly conclusive with the present data, this insight does provide a molecular interpretation to an, until now, largely empirical understanding of optimizing heterologous protein secretion. This molecular insight has direct implications on engineering a broad range of recombinant proteins for secretion and provides potential hypotheses for the root causes of several secretory-associated diseases.

Indexed as

Oxidative StressProtein Foldingalpha-AmylasesBasic-Leucine Zipper Transcription FactorsBiological TransportDisulfidesGlutathioneHumansProinsulinProtein BiosynthesisReactive Oxygen SpeciesRecombinant ProteinsRepressor ProteinsSaccharomyces cerevisiaeSaccharomyces cerevisiae Proteinsalpha-AmylasesBasic-Leucine Zipper Transcription FactorsDisulfidesGlutathioneHAC1 protein, S cerevisiaeProinsulinReactive Oxygen SpeciesRecombinant ProteinsRepressor ProteinsSaccharomyces cerevisiae Proteins

Identifiers

PMID22380681
PMCPMC3310788
OpenAlexW2049579702

What OpenQuestion holds

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LicenceCC BY
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.