<;P>;PROBLEM TO BE SOLVED: To provide an anticancer agent comprising a modified Sendai Virus envelope (HVJ-E) having more improved antitumor effect as an active ingredient. <;P>;SOLUTION: The anticancer agent comprises a fused protein having a functional peptide connected to a C-terminal side, a complex protein containing the fused protein, a modified Sendai virus envelope (HVJ-E) containing the fused protein or the complex protein in an envelope as an active ingredient. <;P>;COPYRIGHT: (C)2011,JPO&INPIT