Evidence map›Paper›PMID 34145286›Full record

ArticleNPJ vaccines2021

Messenger RNA expressing PfCSP induces functional, protective immune responses against malaria in mice.

Katherine L Mallory, Justin A Taylor, Xiaoyan Zou, Ishita N Waghela, Cosette G Schneider, Michael Q Sibilo, Neeraja M Punde, Leah C Perazzo, Tatyana Savransky, Martha Sedegah and 7 more

Open access · goldAbstract read
In one paragraph

Article in NPJ vaccines, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 62 papers.

0numbers the graph read from it
0cells of the map it votes in
62citing papers in PubMed
5.3field-weighted citation impact, top 3% 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

62 citing papers in PubMed, 81 citations in OpenAlex.

  1. Article
  2. Review
  3. Review
  4. Article
  5. Review
  6. Article
  7. Article
  8. Rational design of lipid nanoparticles for enabling gene therapies.Molecular therapy. Methods & clinical development · 2025
    Review
  9. mRNA-LNP vaccine encoding theMolecular therapy. Nucleic acids · 2025
    Article
  10. Article
  11. Review
  12. Article
  13. Clinical development of therapeutic mRNA applications.Molecular therapy : the journal of the American Society of Gene Therapy · 2025
    Review
  14. Article
  15. Article
  16. Review
  17. Review
  18. Advances in Engineering Circular RNA Vaccines.Pathogens (Basel, Switzerland) · 2024
    Review
  19. Article
  20. Article

2 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

17 authors at 10 institutions in 3 countries.

Katherine L MalloryWalter Reed Army Institute of Research, Silver Spring, MD, USA.
Justin A TaylorWalter Reed Army Institute of Research, Silver Spring, MD, USA.
Xiaoyan ZouNaval Medical Research Center, Silver Spring, MD, USA.
Ishita N WaghelaWalter Reed Army Institute of Research, Silver Spring, MD, USA.
Cosette G SchneiderWalter Reed Army Institute of Research, Silver Spring, MD, USA.ORCID http://orcid.org/0000-0001-5825-7640
Michael Q SibiloWalter Reed Army Institute of Research, Silver Spring, MD, USA.
Neeraja M PundeWalter Reed Army Institute of Research, Silver Spring, MD, USA.
Leah C PerazzoWalter Reed Army Institute of Research, Silver Spring, MD, USA.
Tatyana SavranskyWalter Reed Army Institute of Research, Silver Spring, MD, USA.
Martha SedegahNaval Medical Research Center, Silver Spring, MD, USA.
Sheetij DuttaWalter Reed Army Institute of Research, Silver Spring, MD, USA.
Chris J JanseLeiden University Medical Center, Leiden, the Netherlands.
Norbert PardiUniversity of Pennsylvania, Philadelphia, PA, USA.
Paulo J C LinAcuitas Therapeutics, Vancouver, BC, Canada.
Ying K TamAcuitas Therapeutics, Vancouver, BC, Canada.
Drew WeissmanUniversity of Pennsylvania, Philadelphia, PA, USA.
Evelina AngovWalter Reed Army Institute of Research, Silver Spring, MD, USA. Evelina.angov.civ@mail.mil.ORCID http://orcid.org/0000-0001-9186-4098
Parsons (United States) · USAcuitas Therapeutics (Canada) · CAGeneral Dynamics (United States) · USThe Geneva Foundation · USUniversity of Pennsylvania · USWalter Reed Army Institute of Research · USHenry M. Jackson Foundation · USLeiden University Medical Center · NLNaval Medical Research Command · USOak Ridge Associated Universities · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Human malaria affects the vast majority of the world's population with the Plasmodium falciparum species causing the highest rates of morbidity and mortality. With no licensed vaccine and leading candidates achieving suboptimal protection in the field, the need for an effective immunoprophylactic option continues to motivate the malaria research community to explore alternative technologies. Recent advances in the mRNA discipline have elevated the long-neglected platform to the forefront of infectious disease research. As the immunodominant coat protein of the invasive stage of the malaria parasite, circumsporozoite protein (PfCSP) was selected as the antigen of choice to assess the immunogenic and protective potential of an mRNA malaria vaccine. In mammalian cell transfection experiments, PfCSP mRNA was well expressed and cell associated. In the transition to an in vivo murine model, lipid nanoparticle (LNP) encapsulation was applied to protect and deliver the mRNA to the cell translation machinery and supply adjuvant activity. The immunogenic effect of an array of factors was explored, such as formulation, dose, number, and interval of immunizations. PfCSP mRNA-LNP achieved sterile protection against infection with two P. berghei PfCSP transgenic parasite strains, with mRNA dose and vaccination interval having a greater effect on outcome. This investigation serves as the assessment of pre-erythrocytic malaria, PfCSP mRNA vaccine candidate resulting in sterile protection, with numerous factors affecting protective efficacy, making it a compelling candidate for further investigation.

Identifiers

PMID34145286
PMCPMC8213722
OpenAlexW3171383385

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.