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Abstract
Mucosal vaccine based on lactic acid bacteria is an attractive strategy for prevention and treatment of allergic diseases. Here we describe the development of recombinant Lactococcus lactis expressing house dust mite (HDM) allergen as an oral vaccine. The major HDM allergen Der p2 is first codon optimized and synthesized to achieve the maximum expression level in L. lactis. After double digested by NcoI and XbaI, the derp2 fragment is ligated to the same double-digested pNZ8148 vector. The ligation is transformed to L. lactis NZ9000 and correct transformant is verified by sequencing. Western blot analysis is employed to confirm Derp2 expression in L. lactis after nisin induction.
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