Evidence map›Paper›PMID 40763727›Full record

ArticleThe American journal of tropical medicine and hygiene2025

An O-Specific Polysaccharide Shigella flexneri 3a Conjugate Vaccine is Immunogenic and Protective against Virulent Keratoconjunctival Challenge in Guinea Pigs.

Jeshina Janardhanan, Chanchal Wagh, Jibing Yang, Richelle C Charles, Ruchir Kumar Pansuriya, Fahima Chowdhury, Robert W Kaminski, Ashraful Islam Khan, Taufiqur Rahman Bhuiyan, Firdausi Qadri and 3 more

Abstract read
In one paragraph

Article in The American journal of tropical medicine and hygiene, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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0citing papers in PubMed
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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

0 citing papers in PubMed.

No citing paper in PubMed yet.

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

13 authors.

Jeshina JanardhananDivision of Infectious Diseases, Massachusetts General Hospital, Boston, Massachusetts.
Chanchal WaghDivision of Infectious Diseases, Massachusetts General Hospital, Boston, Massachusetts.
Jibing YangCenter for Comparative Medicine, Massachusetts General Hospital, Boston, Massachusetts.
Richelle C CharlesDivision of Infectious Diseases, Massachusetts General Hospital, Boston, Massachusetts.
Ruchir Kumar PansuriyaInternational Vaccine Institute, Seoul, South Korea.
Fahima ChowdhuryInternational Centre for Diarrhoeal Disease Research, Bangladesh, Dhaka, Bangladesh.
Robert W KaminskiLatham BioPharm Group, Cambridge, Massachusetts.
Ashraful Islam KhanInternational Centre for Diarrhoeal Disease Research, Bangladesh, Dhaka, Bangladesh.
Taufiqur Rahman BhuiyanInternational Centre for Diarrhoeal Disease Research, Bangladesh, Dhaka, Bangladesh.
Firdausi QadriInternational Centre for Diarrhoeal Disease Research, Bangladesh, Dhaka, Bangladesh.
Pavol KováčNIDDK, LBC, National Institutes of Health, Bethesda, Maryland.
Peng XuNIDDK, LBC, National Institutes of Health, Bethesda, Maryland.
Edward T RyanDivision of Infectious Diseases, Massachusetts General Hospital, Boston, Massachusetts.

Funding

Functional profiling of OSP-specific and other antibodies during shigella infectionR01AI155414 · NIAID · MASSACHUSETTS GENERAL HOSPITAL · PI Edward T. Ryan · 2020 to 2026
$5.3M
Shigella Conjugate Vaccine (SCV4) Development, Characterization, and Pre-clinical EvaluationR01AI177075 · NIAID · MASSACHUSETTS GENERAL HOSPITAL · PI Edward T. Ryan · 2023 to 2026
$4.3M
Humoral and adaptive immune responses study in Vibrio cholerae infectionK43TW010362 · FIC · INTERNATIONAL CTR/DIARRHOEAL DIS RES · PI BHUIYAN, MD TAUFIQUR RAHMAN · 2016 to 2020
$359k
FIC NIH HHS K43 TW010362NIAID NIH HHS R01 AI155414NIAID NIH HHS R01 AI177075
6 · The paper itself

Abstract

Shigella infection is a major cause of diarrhea, cognitive and physical stunting, and death in young children in resource-limited settings. A vaccine that is protective against shigellosis is needed. Immune responses that target the O-specific polysaccharide (OSP) of Shigella spp. are protective against shigellosis. We previously reported the development and evaluation of a conjugate vaccine targeting Shigella flexneri (S. flexneri) 3a in mice. Here, we report the evaluation of this vaccine (Shigella conjugate vaccine S. flexneri 3a OSP conjugated to a 52 kiloDalton recombinant fragment of the tetanus toxin heavy chain [SCV-Sf3a OSP:rTTHc]) in a second animal model: the guinea pig. This vaccine induced prominent OSP-, lipopolysaccharide-, and rTTHc-specific Immunoglobulin (Ig)G, IgA, and IgM responses in the sera of vaccinated animals. Shigella conjugate vaccine S. flexneri 3a also induced serum bactericidal functional antibody responses, and vaccinated guinea pigs were protected against a virulent strain of keratoconjunctival challenge in the standard Shigella Sereny assay. These results support the further development of SCV-Sf3a OSP:rTTHc.

Indexed as

Dysentery, BacillaryO AntigensShigella flexneriShigella VaccinesAnimalsAntibodies, BacterialFemaleGuinea PigsVaccines, ConjugateAntibodies, BacterialO AntigensShigella VaccinesVaccines, Conjugate

Identifiers

PMID40763727
PMCPMC12493252

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Registered trials

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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.