Abstract

Mucosal immunity may provide a defense against human papillomavirus (HPV) but there are no FDA-approved adjuvants capable of stimulating immune responses within mucosal tissues. After mice were immunized intranasally three times with HPV16 L1 virus-like particles plus with JY adjuvant, which is composed of interleukin-2 and chitosan, sera IgG antibody titer, sera neutralizing antibody titer, sIgA concentration in respiratory tract washes, sIgA concentration in vaginal washes and the number of spot-forming cells (SFC) in splenic lymphocytes were 320±15, 40±2, 27±1.3, 27±1.7μg/ml and 176.7±6 SFC/10(6), respectively; In the group without JY adjuvant, the outcomes were 80±9.4, null, 22±1, 20±2.4μg/ml and 91±5.2 SFC/10(6), respectively. Therefore, JY adjuvant may be an effective mucosal adjuvant for HPV vaccine in mice.

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