科研之友
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摘要
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 mu g ovalbumin (OVA) alone or with 100 mu g OVA formulated in 0.9% saline containing 200 mu g aluminum (alum) or ABP-AW1 (50, 100 and 200 mu g) 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)-gamma 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.
- 出版日期2013-10
- 单位黑龙江中医药大学; 齐齐哈尔医学院
