The present invention relates to virus like particles of plant virus Cucumber Mosaic Virus (CMV) and in particular to modified VLPs of CMV comprising Th cell epitopes in particular universal Th cell epitopes. Furthermore these modified VLPs serve as preferably vaccine platform for generating immune responses in particular antibody responses against antigens linked to said modified VLPs. The presence of the Th cell epitopes in particular universal Th cell epitopes led to a further increase in the generated immune response.