AIM:To explore the immune enhancement of Hsp70L1 in the tumor cell vaccines. METHODS:TRP2153-243 and Hsp70L1 genes were obtained by RT-PCR from B16 cells in murine melanoma and from spleens of C57BL/6 mice and then were inserted into pcDNA3.1/V5-His eukaryotic expression vectors respectively. The recombinants of pTRP2,pHSP70L1 or pTRP2-Hsp fusion gene were obtained and transfected into B16 cells respectively. TRP2153-243,HSP70L1 or TRP2-Hsp fusion gene-expressing B16 cells were then induced to necrosis by f...