Granulocyte macrophage colony-stimulating factor is required for cytokine induction by a highly 6-branched 1,3-ß-D-glucan from Aureobasidium pullulans in mouse-derived splenocytes.
Immunopharmacol Immunotoxicol
; 33(2): 302-8, 2011 Jun.
Article
em En
| MEDLINE
| ID: mdl-20672970
ABSTRACT
We have previously obtained and elucidated the precise structure of a highly branched 1,3-ß-D-glucan (with 6-monoglucopyranosyl side chains), Aureobasidium pullulans-fermented ß-D-glucan (AP-FBG), from the fungus A. pullulans. However, the mechanism(s) of the effects of AP-FBG on in vitro mouse primary cells have not been analyzed in detail. Herein, we report that the induction of cytokines by AP-FBG was dependent on the existence of a granulocyte macrophage colony-stimulating factor (GM-CSF); this is similar way to be a typical 1,3-ß-D-glucan from Sparassis crispa (SCG), which is a 1,3-ß-D-glucopyranosyl backbone with single 1,6-ß-D-glucopyranosyl side branching units every three residues. In other words, the production of cytokines in DBA/2-mouse-derived splenocytes by AP-FBG was completely hampered by an anti-GM-CSF neutralizing monoclonal antibody. Furthermore, the addition of exogenous GM-CSF to C57BL/6-derived splenocytes, which are less sensitive to AP-FBG, induced the production of cytokines by AP-FBG. Therefore, GM-CSF is indispensable for the induction of cytokines by AP-FBG in mouse-derived splenocytes. This finding has provided a new insight into our understanding of the actions of ß-D-glucan but will also aid in the design and development of more effective ß-D-glucan agents.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Ascomicetos
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Baço
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Citocinas
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Fator Estimulador de Colônias de Granulócitos e Macrófagos
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Beta-Glucanas
Limite:
Animals
Idioma:
En
Ano de publicação:
2011
Tipo de documento:
Article