Disclosed are vaccine compositions comprising a single KSHV-LP comprising two or more KSHV glycoproteins and/rl or one or more T cell antigens and methods of preventing or treating KSHV infections using the vaccine compositions. Also disclosed is an expression system or a single expression vector for co-expressing two or more KSHV glycoproteins simultaneously to generate a vaccine comprising a single virus-like particle. The expression system may include a single plasmid inserted with two or more nucleic acid sequences that encode two or more KSHV glycoproteins linked by one or more linking sequences such that the KSHV glycoproteins are co-expressed simultaneously.

Provided herein are methods for generating reversion free attenuated and/or replication incompetent vaccine vectors and their use in vaccine compositions and vaccination. In particular, the use of a codon shuffled helper gene is used to produce compositions comprising replication incompetent virus.

The disclosure provides methods for generating reversion free attenuated and/or replication incompetent vaccine vectors and their use in vaccine compositions and vaccination.

An immunogenically-enhanced Kaposi sarcoma-associated herpesvirus latency-associated nuclear antigen 1 (KSHV LANA1) polypeptide and related methods of eliciting an immune response to KSHV LANA1 are provided. Also described herein is a novel polypeptide capable of inhibiting degradation of a protein or retarding synthesis of a protein when attached to or incorporated within that protein.

Vaccine compositions comprising a single KSHV-LP comprising two or more KSHV glycoproteins and/or one or more T cell antigens and methods of preventing or treating KSHV infections using the vaccine compositions. An expression system or a single expression vector for co-expressing two or more KSHV glycoproteins simultaneously to generate a vaccine comprising a single virus-like particle. The expression system may include a single plasmid inserted with two or more nucleic acid sequences that encode two or more KSHV glycoproteins linked by one or more linking sequences such that the KSHV glycoproteins are co-expressed simultaneously.

Vaccine compositions comprising a single KSHV-LP comprising two or more KSHV glycoproteins and/or one or more T cell antigens and methods of preventing or treating KSHV infections using the vaccine compositions. An expression system or a single expression vector for co-expressing two or more KSHV glycoproteins simultaneously to generate a vaccine comprising a single virus-like particle. The expression system may include a single plasmid inserted with two or more nucleic acid sequences that encode two or more KSHV glycoproteins linked by one or more linking sequences such that the KSHV glycoproteins are co-expressed simultaneously.