Evidence map›Paper›PMID 38278997›Full record

ArticleNature chemical biology2024

Complete biosynthesis of the potent vaccine adjuvant QS-21.

Laetitia B B Martin, Shingo Kikuchi, Martin Rejzek, Charlotte Owen, James Reed, Anastasia Orme, Rajesh C Misra, Amr El-Demerdash, Lionel Hill, Hannah Hodgson and 5 more

Open access · hybridAbstract read
In one paragraph

Article in Nature chemical biology, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 70 papers.

0numbers the graph read from it
0cells of the map it votes in
70citing papers in PubMed
45.2field-weighted citation impact, top 1% 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

70 citing papers in PubMed, 101 citations in OpenAlex.

  1. Article
  2. Review
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  5. Review
  6. Discovery of pseudobaptigenin synthase in fungal-infected Trifolium pratense roots.The Plant journal : for cell and molecular biology · 2026
    Article
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  12. The Cinderella tree,Plants, people, planet · 2026
    Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Review
  18. Review
  19. Article
  20. Article

10 more citing papers are in PubMed but not listed here.

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 at 3 institutions in 5 countries.

Laetitia B B MartinJohn Innes Centre, Norwich Research Park, Norwich, UK.ORCID 0000-0002-6921-7246
Shingo KikuchiJohn Innes Centre, Norwich Research Park, Norwich, UK.ORCID 0000-0001-9033-6242
Martin RejzekJohn Innes Centre, Norwich Research Park, Norwich, UK.ORCID 0000-0002-5091-544X
Charlotte OwenJohn Innes Centre, Norwich Research Park, Norwich, UK.ORCID 0000-0001-9023-2179
James ReedJohn Innes Centre, Norwich Research Park, Norwich, UK.ORCID 0000-0001-5780-6134
Anastasia OrmeJohn Innes Centre, Norwich Research Park, Norwich, UK.
Rajesh C MisraJohn Innes Centre, Norwich Research Park, Norwich, UK.ORCID 0000-0001-9594-3789
Amr El-DemerdashJohn Innes Centre, Norwich Research Park, Norwich, UK.ORCID 0000-0001-6459-2955
Lionel HillJohn Innes Centre, Norwich Research Park, Norwich, UK.
Hannah HodgsonJohn Innes Centre, Norwich Research Park, Norwich, UK.ORCID 0000-0002-9499-7037
Yuzhong LiuCalifornia Institute of Quantitative Biosciences (QB3), University of California, Berkeley, Berkeley, CA, USA.
Jay D KeaslingCalifornia Institute of Quantitative Biosciences (QB3), University of California, Berkeley, Berkeley, CA, USA.
Robert A FieldDepartment of Chemistry and Manchester Institute of Biotechnology, University of Manchester, Manchester, UK.ORCID 0000-0001-8574-0275
Andrew W TrumanJohn Innes Centre, Norwich Research Park, Norwich, UK.ORCID 0000-0001-5453-7485
Anne OsbournJohn Innes Centre, Norwich Research Park, Norwich, UK. anne.osbourn@jic.ac.uk.ORCID 0000-0003-2195-5810
John Innes Centre · GBQB3 · USUniversity of Manchester · GB

Funding

RCUK | Biotechnology and Biological Sciences Research Council (BBSRC) BB/R005508/1RCUK | Biotechnology and Biological Sciences Research Council (BBSRC) BBS/E/J/000PR9790
6 · The paper itself

Abstract

QS-21 is a potent vaccine adjuvant currently sourced by extraction from the Chilean soapbark tree. It is a key component of human vaccines for shingles, malaria, coronavirus disease 2019 and others under development. The structure of QS-21 consists of a glycosylated triterpene scaffold coupled to a complex glycosylated 18-carbon acyl chain that is critical for immunostimulant activity. We previously identified the early pathway steps needed to make the triterpene glycoside scaffold; however, the biosynthetic route to the acyl chain, which is needed for stimulation of T cell proliferation, was unknown. Here, we report the biogenic origin of the acyl chain, characterize the series of enzymes required for its synthesis and addition and reconstitute the entire 20-step pathway in tobacco, thereby demonstrating the production of QS-21 in a heterologous expression system. This advance opens up unprecedented opportunities for bioengineering of vaccine adjuvants, investigating structure-activity relationships and understanding the mechanisms by which these compounds promote the human immune response.

Indexed as

SaponinsTriterpenesAdjuvants, ImmunologicAdjuvants, VaccineHumansAdjuvants, ImmunologicAdjuvants, Vaccinesaponin QA-21V1SaponinsTriterpenes

Identifiers

PMID38278997
PMCPMC10972754
OpenAlexW4391262555

What OpenQuestion holds

Textmetadata
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.