Evidence map›Paper›PMID 32661439›Full record

ArticleNature biotechnology2020

Metabolic engineering generates a transgene-free safety switch for cell therapy.

Volker Wiebking, James O Patterson, Renata Martin, Monica K Chanda, Ciaran M Lee, Waracharee Srifa, Gang Bao, Matthew H Porteus

Abstract read
PubMed Publisher
In one paragraph

Article in Nature biotechnology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 31 papers.

0numbers the graph read from it
0cells of the map it votes in
31citing papers in PubMed
3.1field-weighted citation impact, top 7% 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

31 citing papers in PubMed, 52 citations in OpenAlex.

  1. Review
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  7. Novel strategies to manage CAR-T cell toxicity.Nature reviews. Drug discovery · 2025
    Review
  8. Review
  9. Thymidylate synthase disruption to limit cell proliferation in cell therapies.Molecular therapy : the journal of the American Society of Gene Therapy · 2024
    Article
  10. Review
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

8 authors at 4 institutions in 2 countries.

Volker WiebkingDepartment of Pediatrics, Stanford University School of Medicine, Stanford, CA, USA.ORCID http://orcid.org/0000-0002-9429-5254
James O PattersonAuxolytic Ltd, London, UK.
Renata MartinDepartment of Pediatrics, Stanford University School of Medicine, Stanford, CA, USA.ORCID http://orcid.org/0000-0003-2996-4260
Monica K ChandaDepartment of Pediatrics, Stanford University School of Medicine, Stanford, CA, USA.ORCID http://orcid.org/0000-0003-1232-7759
Ciaran M LeeDepartment of Bioengineering, Rice University, Houston, TX, USA.ORCID http://orcid.org/0000-0002-0789-9149
Waracharee SrifaDepartment of Pediatrics, Stanford University School of Medicine, Stanford, CA, USA.ORCID http://orcid.org/0000-0002-6821-2451
Gang BaoDepartment of Bioengineering, Rice University, Houston, TX, USA.
Matthew H PorteusDepartment of Pediatrics, Stanford University School of Medicine, Stanford, CA, USA. mporteus@stanford.edu.ORCID http://orcid.org/0000-0002-3850-4648
Stanford University · USRice University · USStanford Medicine · USUniversity College Cork · IE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Safeguard mechanisms can ameliorate the potential risks associated with cell therapies but currently rely on the introduction of transgenes. This limits their application owing to immunogenicity or transgene silencing. We aimed to create a control mechanism for human cells that is not mediated by a transgene. Using genome editing methods, we disrupt uridine monophosphate synthetase (UMPS) in the pyrimidine de novo synthesis pathway in cell lines, pluripotent cells and primary human T cells. We show that this makes proliferation dependent on external uridine and enables us to control cell growth by modulating the uridine supply, both in vitro and in vivo after transplantation in xenograft models. Additionally, disrupting this pathway creates resistance to 5-fluoroorotic acid, which enables positive selection of UMPS-knockout cells. We envision that this approach will add an additional level of safety to cell therapies and therefore enable the development of approaches with higher risks, especially those that are intended for limited treatment durations.

Indexed as

Cell- and Tissue-Based TherapyMetabolic EngineeringTransgenesAnimalsBase SequenceCell ProliferationGene EditingGene TargetingGenome, HumanHumansK562 CellsMaleMiceMultienzyme ComplexesOrotate PhosphoribosyltransferaseOrotic Acid5-fluoroorotic acidMultienzyme ComplexesOrotate PhosphoribosyltransferaseOrotic AcidOrotidine-5'-Phosphate DecarboxylaseUridineuridine 5'-monophosphate synthase

Identifiers

PMID32661439
OpenAlexW3040878200

What OpenQuestion holds

Textmetadata
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.