Engineered NS1 for Sensitive, Specific Zika Virus Diagnosis from Patient Serology
Thai Leong Yap
1, Shin Yee Hong
1, Jun Hui Soh, Lekha Ravichandraprabhu, Vanessa W.X. Lim, Hsi-Min Chan, Tommy Z.X. Ong, Ying Ping Chua, Shi En Koh, Huajing Wang, Yee Sin Leo, Jackie Y. Ying, and William Sun
Author affiliations: Experimental Drug Development Centre, Singapore (T.L. Yap, S.Y. Hong); Institute of Bioengineering and Nanotechnology, Singapore (T.L. Yap, S.Y. Hong, L. Ravichandraprabhu, T.Z.X. Ong, Y.P. Chua, S.E. Koh, H. Wang, W. Sun); NanoBio Lab, Singapore (J.H. Soh, H.-M. Chan, J.Y. Ying); National Centre for Infectious Diseases, Singapore (V.W.X. Lim, Y.S. Leo); Tan Tock Seng Hospital, Singapore (Y.S. Leo); Yong Loo Lin School of Medicine, National University of Singapore (Y.S. Leo, W. Sun).
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Figure 4
Figure 4. Immunochromatographic assay (IA) of H-zMut2 F1 IA for IgM and IgG detection in study of Zika diagnosis, Singapore. H-zMut2 as capture antigen in the F1 IA format was tested with training set for detecting IgG (left) and IgM (right). Representative strips show a comparison of performance for WT-NS1, H-zWT and H-zMut2. Overall, H-Mut2 showed higher specificity than H-zWT (against DENV plasma, bottom panels), though both H-Mut2 and H-zWT showed greater sensitivity compared to WT-NS1 (against ZIKV plasma, top panels). The arrows indicate positive signals at the test line (T), upstream of the control line (C). DENV, dengue virus; OD, optical density; WT, wild type; ZIKV, Zika virus.
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