TITLE

A polysaccharide isolated from Agaricus blazei Murill (ABP-AW1) as a potential Th1 immunity-stimulating adjuvant

AUTHOR(S)
LIRAN CUI; YONGXU SUN; HAO XU; HUIYU XU; HUAN CONG; JICHENG LIU
PUB. DATE
August 2013
SOURCE
Oncology Letters;2013, Vol. 6 Issue 4, p1039
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
In the present study, a low molecular weight polysaccharide, ABP-AW1, isolated from Agaricus blazei Murill was assessed for its potential adjuvant activity. ABP-AW1 is considered to create a 'depot' of antigen at a subcutaneous injection site. ICR mice were immunized with 100 pig ovalbumin (OVA) alone or with 100 pig OVA formulated in 0.9% saline containing 200 pig aluminum (alum) or ABP-AW1 (50, 100 and 200 pig) on days 1 and 15. Two weeks after the secondary immunization, splenocyte proliferation, the expression of surface markers, cytokine production and the OVA-specific antibody levels in the serum were determined. The OVA/ABP-AW1 vaccine, in comparison with OVA alone, markedly increased the proliferation of splenic lymphocytes and elicited greater antigen-specific CD4+ T cell activation, as determined by splenic CD4+CD69+ T cells and Th1 cytokine interferon (IFN)-y release. The combination of ABP-AW1 and OVA also enhanced IgG2b antibody responses to OVA. In conclusion, these data indicated that ABP-AW1 significantly enhanced the humoral and cellular immune responses against OVA in the mice, suggesting that ABP-AW1 stimulated Th1-type immunity. We suggest that ABP-AW1 may serve as a new adjuvant.
ACCESSION #
110397647

 

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