The disclosure relates to a fusion protein comprising at least a first and a second peptide, wherein —the second peptide comprises a targeting region and a first and a second interaction region, —the second peptide is located on the surface of the fusion protein; —the second peptide comprises at least two interaction pairs, wherein an interaction pair is formed by an amino acid of the first interaction region and an amino acid of the second interaction region, —the interaction between the amino acids of an interaction pair is covalent or non-covalent; and —at least one interaction pair is a covalent interaction pair in which the amino acids are covalently bound, and to virus like particles (VLP) comprising the fusion protein for use as drug delivery system. Also provided are polynucleotides encoding the fusion protein, suitable expression vectors, host cells, production methods for the fusion protein and the VLP comprising the fusion protein.

The disclosure relates to a fusion protein comprising at least a first and a second peptide, wherein —the second peptide comprises a targeting region and a first and a second interaction region, —the second peptide is located on the surface of the fusion protein; —the second peptide comprises at least two interaction pairs, wherein an interaction pair is formed by an amino acid of the first interaction region and an amino acid of the second interaction region, —the interaction between the amino acids of an interaction pair is covalent or non-covalent; and —at least one interaction pair is a covalent interaction pair in which the amino acids are covalently bound, and to virus like particles (VLP) comprising the fusion protein for use as drug delivery system. Also provided are polynucleotides encoding the fusion protein, suitable expression vectors, host cells, production methods for the fusion protein and the VLP comprising the fusion protein.

The disclosure provides compositions and methods involving viral RNA segments for use in modulating immune responses, including inhibition inflammation related to pathogenic T-cell activation. In addition, modification of the viral sequences responsible for modulating immune response provides for improved vaccine formulations.

The disclosure provides compositions and methods involving viral RNA segments for use in modulating immune responses, including inhibition inflammation related to pathogenic T-cell activation. In addition, modification of the viral sequences responsible for modulating immune response provides for improved vaccine formulations.

A menu of mutations was developed that is useful in fine-tuning the attenuation and growth characteristics of dengue virus vaccines.

Provided herein are immunization regimens for inducing an immune response (e.g., an antibody response) against influenza virus. In specific aspects, the immunization regimens involve the administration of a chimeric hemagglutinin (HA), a headless HA or another influenza virus stem domain based construct (e.g., the HA stem domain or a fragment thereof) to a subject. In certain aspects, the immunization regimens also involve the administration of an influenza virus neuraminidase immunogen.

Provided herein are immunization regimens for inducing an immune response (e.g., an antibody response) against influenza virus. In specific aspects, the immunization regimens involve the administration of a chimeric hemagglutinin (HA), a headless HA or another influenza virus stem domain based construct (e.g., the HA stem domain or a fragment thereof) to a subject. In certain aspects, the immunization regimens also involve the administration of an influenza virus neuraminidase immunogen.

A method to treat hepatoma with dengue viruses which infect liver tumor stem cells for annihilation of hepatocellular carcinoma tissues. The liver tumor stem cells expressing the biomarker of CD133 in a tumor part are the objects infected by dengue viruses preferentially and killed due to specific protein expressions for suppression of hepatoma.

Disclosed herein are methods and composition producing a viral vaccine with reduced particle size, particularly for use in the production of influenza virus vaccines.

A method and a device that enable inactivation of a virus even if the nature and the like of the virus is unknown. The method for inactivating a virus involves preparing a laser that emits laser light having a specific wavelength, and irradiating a virus with the laser light to inactivate the virus.