Abstract
Strongyloidiasis is a mysterious yet important parasitic disease that is hard to diagnose. While microscopic examination remains a "controversial" gold standard method, improved diagnosis is achieved through confirmatory assays with serological and/or molecular diagnostic approaches. In the current serodiagnosis of strongyloidiasis, recombinant proteins have been adopted in place of the use of native parasite antigens, although the availability of diagnostically potential proteins are still limited. Here, we introduce a novel Strongyloides recombinant protein that is uniquely attached to two different short peptide tags as a potential diagnostic biomarker for serodiagnosis of strongyloidiasis, namely lysine (7K) and aspartic acid (7D). The work presented focus on improving the yield and purity of the previously unexpressed recombinant protein. Preliminary diagnostic evaluation of the recombinant favors Ss3a7K protein owing to its higher antigenicity performance with 80% sensitivity and 100% specificity, respectively.
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