ISSN: 0973-7510

E-ISSN: 2581-690X

Research Article | Open Access
Yatin Kumar, Anusha Suresh, Vandana Rajshree and Avijit Pramanik
Department of Microbiology, Central University of Haryana, Mahendergarh, Haryana, India.
Article Number: 11620 | © The Author(s). 2026
J Pure Appl Microbiol. 2026;20(3):2181-2201. https://doi.org/10.22207/JPAM.20.3.10
Received: 01 April 2026 | Accepted: 10 June 2026 | Published online: 01 August 2026
Issue online: September 2026
Abstract

Vibrio alginolyticus is an opportunistic marine pathogen that causes severe vibriosis in aquatic animals and occasionally in humans, leading to substantial economic losses in aquaculture. Despite progress in antimicrobial therapy, the emergence of multidrug-resistant (MDR) strains and the lack of effective vaccines have emphasized the need for novel approaches. The objective of this study was to identify and assess vaccine candidates in V. alginolyticus ATCC 17749 using an integrative strategy that integrates reverse vaccinology and immune-informatics. The complete proteome of V. alginolyticus ATCC 17749 was retrieved from NCBI databases, and computational pipelines were used to predict subcellular localization, transmembrane topology, and antigenicity. Surface-exposed, non-allergenic and non-toxic outer membrane and secretory proteins with high antigenicity scores were selected for epitope prediction. Cytotoxic T lymphocyte (CTL), helper T lymphocyte (HTL), and B-cell epitopes were identified through NetMHCpan 4.1, IEDB, and ABCpred, respectively. Robust humoral and cellular immune responses were predicted by immune simulation. The target proteins were docked with TLR2 and TLR4 using HDOCK, and the simulation was performed using the iMODS server for the highest-scoring docking complex for each receptor. In silico cloning to express the target protein was performed using the SnapGene tool. This integrated computational vaccinology approach reliably identifies promising antigenic targets for V. alginolyticus, providing a foundation for the rational development of next-generation polyvalent vaccines against Vibrio infections in aquaculture and related fields.

Keywords

Reverse Vaccinology, Immune-informatics, Outer Membrane Proteins, Extracellular Proteins, Multiepitope Prediction

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© The Author(s) 2026. Open Access. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License which permits unrestricted use, sharing, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.