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Features of the Hum...
Features of the Human Antibody Response against the Respiratory Syncytial Virus Surface Glycoprotein G
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Borochova, K (författare)
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Niespodziana, K (författare)
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Hammar, KS (författare)
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- van Hage, M (författare)
- Karolinska Institutet
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- Hedlin, G (författare)
- Karolinska Institutet
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- Soderhall, C (författare)
- Karolinska Institutet
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Focke-Tejkl, M (författare)
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Valenta, R (författare)
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(creator_code:org_t)
- 2020-06-25
- 2020
- Engelska.
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Ingår i: Vaccines. - : MDPI AG. - 2076-393X. ; 8:2
- Relaterad länk:
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https://europepmc.or...
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http://kipublication...
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https://doi.org/10.3...
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Abstract
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- Respiratory syncytial virus (RSV) infections are a major cause of serious respiratory disease in infants. RSV occurs as two major subgroups A and B, which mainly differ regarding the surface glycoprotein G. The G protein is important for virus attachment and G-specific antibodies can protect against infection. We expressed the surface-exposed part of A2 strain-derived G (A2-G) in baculovirus-infected insect cells and synthesized overlapping peptides spanning complete A2-G. The investigation of the natural IgG response of adult subjects during a period of one year showed that IgG antibodies (i) recognize G significantly stronger than the fusion protein F0, (ii) target mainly non-conformational, sequential peptide epitopes from the exposed conserved region but also buried peptides, and (iii) exhibit a scattered but constant recognition profile during the observation period. The IgG subclass reactivity profile (IgG1 > IgG2 > IgG4 = IgG3) was indicative of a mixed Th1/Th2 response. Two strongly RSV-neutralizing sera including the 1st WHO standard contained high IgG anti-G levels. G-specific IgG increased strongly in children after wheezing attacks suggesting RSV as trigger factor. Our study shows that RSV G and G-derived peptides are useful for serological diagnosis of RSV-triggered exacerbations of respiratory diseases and underlines the importance of G for development of RSV-neutralizing vaccines.
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Vaccines
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