Dataset Information

Novel insights into Strongyloides stercoralis third stage infective larvae proteome

ABSTRACT: Background - Strongyloidiasis is a neglected tropical disease affecting an estimated 600 million people, particularly in resource-limited settings. The infection can persist lifelong due to Strongyloides stercoralis peculiar auto-infective cycle. The cumbersome diagnosis and the limited knowledge of the mechanisms underpinning this chronic infection are key issues in the disease management. To date, only a few proteomics studies have been conducted to elucidate the molecular mechanisms associated with Strongyloides parasitism or to highlight novel immunological markers and our knowledge of S. stercoralis proteome still limited. Methods - S. stercoralis infective larvae (iL3) we isolated from a faecal sample from an infected subject and analysed by high-throughput tandem mass spectrometry. To achieve a more comprehensive characterisation of iL3 proteome the experimental dataset was analysed through an automatic search strategy combined with manual annotation, which included gene ontology (GO) analysis, InterPro annotation, assessment of the homology with Homo sapiens and other pathogens of clinical importance and B-cell epitope prediction. Results – Our pipeline identified 430 S. stercoralis proteins, 187 (43%) of which corresponded to uncharacterized proteins. Oxidoreductases and peptidases were amongst the most represented protein categories as highlighted by GO analyses (molecular function terms); while membrane and mitochondrial proteins were the most represented cellular component GO categories. In our dataset we also identified a high proportion of proteins bearing CAP, SCP or thioredoxin domain or belonging to cysteine-rich secretory, transthyretin-like or peptidase protein families, confirming previous data on the most represented proteins associated with S. stercoralis parasitism, as inferred from genomic and transcriptomic data. Finally, we also highlighted 9 proteins bearing amino acid sequences with immunogenic properties that might represent novel candidates for serological tests. Conclusions – Here we provide a comprehensive description and annotation of S. stercoralis iL3 proteome and propose some proteins as potentially immunogenic, to be evaluated as novel serological diagnostic markers. In order to highlight novel targets to improve current serodiagnosis and treatment, it is in fact fundamental to expand the molecular understanding derived from ‘omics studies beyond the current state of the art.

INSTRUMENT(S): TripleTOF 5600

ORGANISM(S): Strongyloides Stercoralis

TISSUE(S): Feces

SUBMITTER: Marcello Manfredi

LAB HEAD: Marcello Manfredi

PROVIDER: PXD037243 | Pride | 2023-03-11

REPOSITORIES: Pride

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Publications

Novel insights into the somatic proteome of Strongyloides stercoralis infective third-stage larvae.

Dishnica Klevia K Piubelli Chiara C Manfredi Marcello M Kondaveeti Ravi Teja RT Longoni Silvia Stefania SS Degani Monica M Buonfrate Dora D Giorgetti Alejandro A Tiberti Natalia N

Parasites & vectors 20230131 1

<h4>Background</h4>Strongyloidiasis is a neglected tropical disease affecting an estimated 600 million people, particularly in resource-limited settings. The infection can persist lifelong due to unusual auto-infective cycle of Strongyloides stercoralis. The lack of a diagnostic gold standard and limited knowledge of the mechanisms underpinning this chronic infection are key issues in disease management. To date, only a few proteomics studies have been conducted to elucidate the molecular mechan ...[more]

PMID: 36721249

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	Tiberti_Larve_SsL3_30082019_LIB1.mgf	Mgf
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