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ArticleMolecular biology reports2026

Recombinant maltose-inducible porin LamB of Aeromonas hydrophila induces T

Tanuja Upadhyaya, Sunita Kumari Yadav, Vibhuti Sharma, Puneet Kumar Gupta, Aparna Dixit

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Article in Molecular biology reports, 2026. 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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1 · What the graph read from it

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5 · Who and what money

Authors and funding

5 authors.

Tanuja UpadhyayaGene Regulation Laboratory, School of Biotechnology, Jawaharlal Nehru University, New Delhi, 110067, India.
Sunita Kumari YadavGene Regulation Laboratory, School of Biotechnology, Jawaharlal Nehru University, New Delhi, 110067, India.
Vibhuti SharmaGene Regulation Laboratory, School of Biotechnology, Jawaharlal Nehru University, New Delhi, 110067, India.
Puneet Kumar GuptaGene Regulation Laboratory, School of Biotechnology, Jawaharlal Nehru University, New Delhi, 110067, India.
Aparna DixitGene Regulation Laboratory, School of Biotechnology, Jawaharlal Nehru University, New Delhi, 110067, India. adixit7@gmail.com.

Funding

Department of Biotechnology, Ministry of Science and Technology, India BT/AAQ/03/TF/2000
6 · The paper itself

Abstract

backgroundAeromonas hydrophila is a major freshwater fish pathogen responsible for significant economic losses to the aquaculture industry. Its virulence factors include proteins involved in primary adhesion, pili, flagella, O-antigen, outer membrane proteins, and adhesins, etc. Among these, the outer membrane maltose-inducible porin functions as an adhesin and can be a potential vaccine candidate. METHODS AND

resultsIn the present study, the maltose-inducible porin (LamB) of A. hydrophila was heterologously overexpressed, purified and assessed for its immunogenic potential in a murine model. The gene encoding mature LamB was cloned into pRSET-A expression vector. Recombinant LamB (rLamB) carrying a 6×-histidine tag was expressed as inclusion bodies in E. coli BL21(λDE3), purified from solubilized inclusion bodies by metal affinity chromatography to near homogeneity, and refolded. Immunization of mice with rLamB generated high-titer anti-rLamB antibodies with high specificity. The anti-rLamB antisera agglutinated live A. hydrophila cells in vitro and recognized other Aeromonas species, suggesting its possible application in the diagnosis of Aeromonas infection and potential as a candidate for broad-spectrum vaccine development. Antibody isotyping and cytokine ELISA indicated a T

conclusionRecombinant LamB of Aeromonas hydrophila elicited strong and specific immune responses, generating high-titer antibodies that agglutinated live bacteria and cross-reacted with other Aeromonas species. These findings collectively suggest that rLamB of A. hydrophila may have potential as a vaccine candidate for broad-spectrum vaccine development and possible diagnostic applications against heterogeneous A. hydrophila.

Indexed as

Aeromonas hydrophilaPorinsAnimalsAntibodies, BacterialBacterial Outer Membrane ProteinsBacterial VaccinesCross ReactionsDisease Models, AnimalFemaleGram-Negative Bacterial InfectionsImmunizationMaltoseMiceMice, Inbred BALB CProtein Subunit VaccinesRecombinant ProteinsAntibodies, BacterialBacterial Outer Membrane ProteinsBacterial VaccinesMaltosePorinsProtein Subunit VaccinesRecombinant ProteinsAeromonas hydrophilaAgglutinationCross-reactivityMaltose-inducible porinMixed immune responseVaccine

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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.