Role of antigen and antibody in the regulation of the immune response

The enzyme dextranase could degrade antigenic dextran in vivo even when given 6-15 d after the antigen. Dextranase injected after the antigen suppressed the immune response when given 24 but not 48 h after the antigen, indicating that the antigen must interact with the immune system for 48 h to initiate a response. Thereafter, the B cells are independent of further antigen stimulation. To show whether antibody-mediated suppression of the immune response was determinant specific FITC-conjugated SRC were applied as immunogen and antibodies were raised both against the carrier (SRC) and the FITC hapten. When these antibodies were injected 1-3 h after the immunogen they only suppressed the immune response to the corresponding determinant. Anti-carrier antibodies usually enhanced the response to the hapten. Therefore, antibody-mediated suppression of the immune response is determinant-specific and cannot be mediated in vivo to a detectable extent by the Fc part of the antibodies.

Medienart:

Artikel

Erscheinungsjahr:

1985

Erschienen:

1985

Enthalten in:

Zur Gesamtaufnahme - volume:30

Enthalten in:

Folia microbiologica - 30(1985), 3 vom: 01., Seite 203-11

Sprache:

Englisch

Beteiligte Personen:

Möller, G [VerfasserIn]

Themen:

Antibodies
Antigens
Dextranase
Dextrans
EC 3.2.1.11
Epitopes
Fluorescein-5-isothiocyanate
Fluoresceins
I223NX31W9
Journal Article
Thiocyanates

Anmerkungen:

Date Completed 22.08.1985

Date Revised 28.08.2019

published: Print

Citation Status MEDLINE

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM023903155