Evidence map›Paper›PMID 42024908›Full record

ArticleThe Indian journal of medical research2026

Evolutionary analysis and immunoinformatic-based epitope prediction of dengue virus serotype 2 strains from Sri Lanka.

Dilara Sesadi Gunawardane, Amani Navarathna, Pasindu Akash Kulasinghe, Thaksala Chamod Jayakanth, Pavithra Dilakshini Dayananda

Abstract read
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Article in The Indian journal of medical research, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper, 1 of them a synthesis that pooled it.

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0cells of the map it votes in
1citing papers in PubMed, 1 pooled it
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1 · What the graph read from it

What it found

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2 · The registry

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3 · Its place in the literature

Who cites it

1 citing paper in PubMed, 1 synthesis or guideline pooled it.

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4 · The record

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5 · Who and what money

Authors and funding

5 authors.

Dilara Sesadi GunawardaneGenetics and Molecular Biology Unit, Faculty of Applied Sciences, University of Sri Jayewardenepura, Nugegoda, Sri Lanka.
Amani NavarathnaGenetics and Molecular Biology Unit, Faculty of Applied Sciences, University of Sri Jayewardenepura, Nugegoda, Sri Lanka.
Pasindu Akash KulasingheGenetics and Molecular Biology Unit, Faculty of Applied Sciences, University of Sri Jayewardenepura, Nugegoda, Sri Lanka.
Thaksala Chamod JayakanthGenetics and Molecular Biology Unit, Faculty of Applied Sciences, University of Sri Jayewardenepura, Nugegoda, Sri Lanka.
Pavithra Dilakshini DayanandaGenetics and Molecular Biology Unit, Faculty of Applied Sciences, University of Sri Jayewardenepura, Nugegoda, Sri Lanka.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Background and objectives To investigate the phylogenetic and evolutionary relationships of dengue virus 2 (DENV-2) strains in Sri Lanka and identify probable antigenic B and T cell epitopes in the envelope gene region. Methods Phylogenetic analysis was conducted on the envelope gene region of Sri Lankan DENV-2 strains alongside globally homologous sequences. Selection pressure analysis identified codons under diversifying and purifying selection. Epitope prediction was performed to detect probable antigenic B and T cell epitopes. Results The sequences belonged to two major lineages of the cosmopolitan genotype: major lineage A and F from various geographical regions. Phylogenetic analysis showed segregation into distinct clades, with close sub-clustering of Sri Lankan strains with those from China, Malaysia, Myanmar, Taiwan, and Reunion Island. Selection pressure analysis revealed two sites under diversifying selection, with numerous sites under purifying selection. Epitope prediction detected several linear B and T cell epitopes with probable antigenicity within the envelope gene region. Interpretation and conclusions This study highlights the widespread dominance of the cosmopolitan genotype in Sri Lanka and underscores the role of air travel and human migration in viral transmission and global strain introduction. The presence of diversifying selection at two E gene sites alongside widespread purifying selection suggests evolutionary pressures on viral fitness. The identified B and T cell epitopes represent potential targets for universal vaccine development and therapeutic interventions.

Indexed as

DengueDengue VirusEpitopes, B-LymphocyteEpitopes, T-LymphocyteViral Envelope ProteinsEvolution, MolecularGenotypeHumansImmunoinformaticsPhylogenySerogroupSri LankaEpitopes, B-LymphocyteEpitopes, T-LymphocyteViral Envelope ProteinsCosmopolitan genotypeDengue virus serotype 2Epitope predictionPhylogenetic analysisSelection pressure

Identifiers

PMID42024908
PMCPMC13126523

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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.