Local oral immunisation with synthetic peptides induces a dual mucosal IgG and salivary IgA antibody response and prevents colonisation of Streptococcus mutans

1990 ◽  
pp. 336-339
Author(s):  
L A Bergmeier ◽  
T Lehner ◽  
J Haron
1999 ◽  
Vol 67 (5) ◽  
pp. 2638-2642 ◽  
Author(s):  
Daniel J. Smith ◽  
Rhonda L. Heschel ◽  
William F. King ◽  
Martin A. Taubman

ABSTRACT We examined the immunogenicity and induction of inhibitory activity of 19-mer synthetic peptides which contained putative catalytic regions that were associated with the β5 (EAW) and β7 (HDS) strand elements of the suggested (β,α)8 catalytic barrel domain of Streptococcus mutans glucosyltransferase (GTF). Both peptides readily induced serum immunoglobulin G (IgG) and salivary IgA antipeptide activity which was reactive both with the inciting peptide and with intactS. mutans GTF. Antisera to each peptide construct also inhibited the ability of S. mutans GTF to synthesize glucan. These observations support the existence of catalytic subdomains containing glutamate and tryptophan (EAW) or aspartate and histidine (HDS) residues, each of which have been suggested to be involved with the catalytic activity of GTF. Furthermore, the epitopes defined in these sequences have significant immunogenicity and can induce immune responses which interfere with GTF-mediated glucan synthesis.


2005 ◽  
Vol 73 (9) ◽  
pp. 5675-5684 ◽  
Author(s):  
Ruchele D. Nogueira ◽  
Alessandra C. Alves ◽  
Marcelo H. Napimoga ◽  
Daniel J. Smith ◽  
Renata O. Mattos-Graner

ABSTRACT The initial infection of children by Streptococcus mutans, the main pathogen of dental caries, depends on the ability of S. mutans to adhere and accumulate on tooth surfaces. These processes involve the adhesin antigen I/II (AgI/II), glucosyltransferases (GTF) and glucan-binding protein B (GbpB), each a target for anticaries vaccines. The salivary immunoglobulin A (IgA) antibody responses to S. mutans antigens (Ags) were characterized in 21 pairs of 5- to 13-month-old children. Pairs were constructed with one early S. mutans-infected and one noninfected child matched by age, racial background, number of teeth, and salivary levels of IgA. Specific salivary IgA antibody response and S. mutans infection levels were then measured during a 1-year follow-up. Robust responses to S. mutans were detected from 6 months of age. Salivary IgA antibody to AgI/II and GTF was commonly detected in salivas of all 42 children. However, GbpB-specific IgA antibody was seldom detected in the subset of infected children (38.1% at baseline). In contrast, most of the subset of noninfected children (76.2%) showed GbpB-reactive IgA antibody during the same period. Frequencies of GbpB responses increased with age, but differences in intensities of GbpB-IgA antibody reactions were sustained between the subsets. At baseline, GbpB-reactive IgA antibody accounted for at least half of the total salivary IgA S. mutans-reactive antibody in 33.3 and 9.5% of noninfected and infected children, respectively. This study provides evidence that a robust natural response to S. mutans Ags can be achieved by 1 year of age and that IgA antibody specificities may be critical in modulating initial S. mutans infection.


2012 ◽  
Vol 57 (6) ◽  
pp. 647-653 ◽  
Author(s):  
Ruchele Dias Nogueira ◽  
Maria Lucia Talarico Sesso ◽  
Mariana Castro Loureiro Borges ◽  
Renata O. Mattos-Graner ◽  
Daniel James Smith ◽  
...  

2016 ◽  
Vol 67 ◽  
pp. 22-27 ◽  
Author(s):  
Natália Helena Colombo ◽  
Jesse Augusto Pereira ◽  
Márjully Eduardo Rodrigues da Silva ◽  
Laís Fernanda Fonseca Ribas ◽  
Thaís Manzano Parisotto ◽  
...  

1985 ◽  
Vol 107 (3) ◽  
pp. 430-433 ◽  
Author(s):  
L. Mellander ◽  
B. Carlsson ◽  
Fehmida Jalil ◽  
T. Söderström ◽  
L.Å. Hanson

1987 ◽  
Vol 37 (3) ◽  
pp. 244-249 ◽  
Author(s):  
Makoto SATO ◽  
Atsushi NAGATA ◽  
Reiko MAEHARA ◽  
Junko ENDO ◽  
Daisuke HINODE ◽  
...  

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