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Naturally acquired Rift Valley fever virus neutralizing antibodies predominantly target the Gn glycoprotein

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Title Naturally acquired Rift Valley fever virus neutralizing antibodies predominantly target the Gn glycoprotein
 
Creator Wright, D.
Allen, E.R.
Clark, M.H.A.
Gitonga, J.N.
Karanja, H.K.
Hulswit, R.J.G.
Taylor, I.
Biswas, S.
Marshall, J.
Mwololo, D.
Muriuki, J.
Bett, Bernard K.
Bowden, T.A.
Warimwe, G.M.
 
Subject immunology
virology
rift valley fever virus
 
Description Rift Valley fever (RVF) is a viral hemorrhagic disease first discovered in Kenya in 1930. Numerous animal studies have demonstrated that protective immunity is acquired following RVF virus (RVFV) infection and that this correlates with acquisition of virus-neutralizing antibodies (nAbs) that target the viral envelope glycoproteins. However, naturally acquired immunity to RVF in humans is poorly described. Here, we characterized the immune response to the viral envelope glycoproteins, Gn and Gc, in RVFV-exposed Kenyan adults. Long-lived IgG (dominated by IgG1 subclass) and T cell responses were detected against both Gn and Gc. However, antigen-specific antibody depletion experiments showed that Gn-specific antibodies dominate the RVFV nAb response. IgG avidity against Gn, but not Gc, correlated with nAb titers. These data are consistent with the greater level of immune accessibility of Gn on the viral envelope surface and confirm the importance of Gn as an integral component for RVF vaccine development.
 
Date 2020-11
2020-10-26T13:06:12Z
2020-10-26T13:06:12Z
 
Type Journal Article
 
Identifier Wright, D., Allen, E.R., Clark, M.H.A., Gitonga, J.N., Karanja, H.K., Hulswit, R.J.G., Taylor, I., Biswas, S., Marshall, J., Mwololo, D., Muriuki, J., Bett, B., Bowden, T.A. and Warimwe, G.M. 2020. Naturally acquired Rift Valley fever virus neutralizing antibodies predominantly target the Gn glycoprotein. iScience 23(11): 101669.
2589-0042
https://hdl.handle.net/10568/109976
https://doi.org/10.1016/j.isci.2020.101669
 
Language en
 
Rights CC-BY-NC-ND-4.0
Open Access
 
Publisher Elsevier BV
 
Source iScience