Neutralization Capacity and Antibody Dependent Cell-mediated Cytotoxicity of Separated IgG Subclasses 1, 3 and 4 Against Herpes Simplex Virus
Overview
Authors
Affiliations
IgG subclasses 1, 3 and 4 in sera from herpes simplex virus type 1 (HSV-1) seropositive donors were separated and their functions assayed. The main neutralizing activity to HSV-1 was found in the IgG1 fractions. Both IgG3 and IgG4 possessed higher neutralizing titres than IgG1 in relation to the respective HSV IgG subclass enzyme-linked immunosorbent assay (ELISA) titre. Addition of complement resulted in a strong enhancement of IgG3 neutralizing activity. HSV neutralizations by IgG1 and, surprisingly, IgG4 were also somewhat enhanced by complement. With the addition of complement, the contribution to neutralizing activity of IgG3 was calculated to increase from 31 to 40% of total IgG in HSV neutralization in native sera. The avidities of the IgG fractions to HSV glycoprotein C (gC) were estimated in a few sera but could not be correlated to neutralization results. Antibody dependent cell-mediated cytotoxicity (ADCC) was detectable mainly in IgG1 and 3 fractions of sera with high anti-HSV antibody titres.
Errors in data interpretation from genetic variation of human analytes.
Howie H, Delaney M, Wang X, Er L, Kapp L, Lebedev J JCI Insight. 2017; 2(13).
PMID: 28679954 PMC: 5499359. DOI: 10.1172/jci.insight.94532.
Negm O, Mackenzie B, Hamed M, Ahmad O, Shone C, Humphreys D Clin Exp Immunol. 2017; 188(3):437-443.
PMID: 28213939 PMC: 5422716. DOI: 10.1111/cei.12946.
Involvement of STAT4 in IgG subtype switching and ocular HSV-1 replication in mice.
Allen S, Mott K, Ghiasi H Mol Vis. 2010; 16:98-104.
PMID: 20104254 PMC: 2810873.
Lai N, Lan J, Yu C, Lin R Ann Rheum Dis. 1995; 54(3):225-8.
PMID: 7748021 PMC: 1005561. DOI: 10.1136/ard.54.3.225.
Specific IgG subclass reactivity in herpes simplex encephalitis.
Mathiesen T, Linde A, Olding-Stenkvist E, Wahren B J Neurol. 1988; 235(7):400-6.
PMID: 3221245 DOI: 10.1007/BF00314481.