The invention relates to a method for providing a drug delivery system, in particular for crossing the blood brain barrier (BBB), comprising a virus-like particle (VLP) derived from John Cunningham virus (JCV), a drug delivery system and novel VLP obtainable by said method. The method comprises steps of disassembly of VLP into pentamers and reassembly into VLP.

The invention relates to a method for providing a drug delivery system, in particular for crossing the blood brain barrier (BBB), comprising a virus-like particle (VLP) derived from John Cunningham virus (JCV), a drug delivery system and novel VLP obtainable by said method. The method comprises steps of disassembly of VLP into pentamers and reassembly into VLP.

Provided are particles of nucleic acid origami structure encapsulated by at least twelve capsid units, compositions comprising the same and uses thereof for delivery of nucleic acids to target cells.

Disclosed is an immunity inducer. The immunity inducer comprises virus like particles; the virus like particles comprise a virus-derived outer coat protein and an antigen-bound protein comprising an exogenous antigen; the outer coat protein constitutes an outer coat of the virus like particles, and the antigen-bound protein is comprised in the outer coat; and the virus like particles induce an immune effect of a living body on the antigen.

The present invention relates to a method of producing a polyomavirus or polyomavirus-derived virus-like particle (vlp) carrying on its surface at least one targeting molecule that binds to a cell of interest. Furthermore, the present invention relates to a composition comprising such a polyomavirus or polyomavirus-derived vlp and to the use of the polyomavirus or polyomavirus-derived vlp of the invention or the composition of the invention for use as a medicament. The present invention further relates to a kit comprising the polyomavirus or polyomavirus-derived vlp or the composition of the invention.

The present disclosure relates to a heterologous recombinant baculovirus (rBV) expression system for the production of foreign heterologous proteins in insect cells. This system comprises a recombinant baculovirus backbone within a genome with a deletion in the cathepsin gene into which foreign gene cassettes can be integrated, and an insect cell that can be infected by the v-cath-rBV, and in which the foreign proteins and/or viral vectors or particles are expressed.

The invention relates to virus like particles (VLP) associated with a lysosomal enzyme or an expression vector encoding a lysosomal enzyme which are used in a method for the treatment of a lysosomal storage disease. The invention also relates to a pharmaceutical composition for use in a method for the treatment of a lysosomal storage disease, to an expression vector encoding a lysosomal enzyme and to a method of associating a VLP with an expression vector encoding a lysosomal enzyme.

The present invention relates to a method of producing a polyomavirus or polyomavirus-derived virus-like particle (VLP) carrying on its surface at least one targeting molecule that binds to a cell of interest, the method comprising the step of contacting the polyomavirus or polyomavirus-derived VLP with (i) the targeting molecule, wherein the at least one targeting molecule is glycosylated with at least one glycosyl residue that is recognised by the polyomavirus or polyomavirus-derived VLP; or (ii) a first interaction molecule, wherein the first interaction molecule is glycosylated with at least one glycosyl residue that is recognised by the polyomavirus or polyomavirus-derived VLP; and the at least one targeting molecule, wherein the at least one targeting molecule is conjugated to a second interaction molecule capable of interacting with the first interaction molecule. The present invention further relates to a polyomavirus or polyomavirus-derived virus-like particle (VLP), wherein the virus or VLP carries on its surface at least one targeting molecule that binds to a cell of interest, as well as to a polyomavirus or polyomavirus-derived VLP obtained or obtainable by the method of the invention. Furthermore, the present invention relates to a composition comprising said polyomavirus or polyomavirus-derived VLP and to the use of the polyomavirus or polyomavirus-derived VLP of the invention or the composition of the invention for use as a medicament. The present invention further relates to a kit comprising the polyomavirus or polyomavirus-derived VLP or the composition of the invention.

Disclosed is an immunostimulator containing virus-like particles, in which the virus-like particles contain an outer coat protein containing an amino acid sequence selected from the group consisting of SEQ ID No. 1, SEQ ID No. 26, SEQ ID No. 33, SEQ ID No. 35, SEQ ID No. 37, SEQ ID No. 39, SEQ ID No. 41, SEQ ID No. 43 and SEQ ID No. 45; the outer coat protein constitutes an outer coat of the virus-like particles; and the virus-like particles do not substantially contain a genome DNA of SV40.

The invention relates to VLP derived from human polyoma virus loaded with a drug (cargo) as a drug delivery system for transporting said drug into the CNS, in particular of living humans.