Provided are a vaccine composition for preventing or treating cancer, the vaccine composition comprising antigen-presenting cells, on the cell surface of which a complex of a major histocompatibility complex (MHC) and a tumor antigen is overexpressed, and cancer treatment using the same.

Provided are a tandem epitope polypeptide vaccine for novel coronavirus and use thereof. Specifically, a vaccine polypeptide for novel coronavirus pneumonia is provided on the basis of analysis and study of the RBD sequence and structural information of the S protein of SARS-CoV-2. Said vaccine polypeptide comprises the following elements connected in series: a generic Th epitope sequence, a B cell epitope sequence and a T cell epitope sequence. The B cell epitope and the T cell epitope have an amino acid sequence from the RBM region of the S protein of SARS-CoV-2. Provided are a vaccine composition containing said vaccine polypeptide and use thereof. Experiments show that the vaccine polypeptide of the present invention can enable cynomolgus monkeys to initiate strong cellular and humoral immunity, and to generate neutralizing antibodies that block the binding of RBD and ACE2, and can be used for preventing and treating novel coronavirus pneumonia.

Provided herein are methods and compositions related to cryo-shocked cells useful as therapeutic agents. The cryo-shocked cells may be formulated as a vaccine. Disclosed are methods of preparing dead cryo-shocked cells. Disclosed are also methods of treating or preventing cancer, comprising administering the cryo-shocked cells. Further, methods for delivering a drug to a target tissue of a patient are disclosed.

A method of treating a Philadelphia chromosome-positive tumor in a subject comprises administering to the subject a therapeutic composition comprising an incubated combined mixture of (a) a first component comprising (i) Philadelphia chromosome-positive tumor lysate, (ii) plasmid encoding bcr/abl fusion protein, or (iii) bcr/abl fusion peptide; and (b) a second component comprising plasmacytoid dendritic cells expressing Toll-like receptor 9 and modified for stable expression of CD40 ligand or GM-CSF by a nucleotide sequence engineered into said plasmacytoid dendritic cells.

The present invention provides a complex for use in the prevention and/or treatment of cancer, the complex comprising a) a cell penetrating peptide, b) at least one antigen or antigenic epitope, and c) at least one TLR peptide agonist, wherein the components a)-c) are covalently linked. In particular, compositions for use in the prevention and/or treatment of cancer, such as a pharmaceutical compositions and vaccines are provided.

Disclosed are invariant natural killer T (iNKT) cells engineered using hematopoietic stem and progenitor cells (HSPCs) and methods of making and using thereof. Specifically, the engineered cells iNKT are genetically modified to contain at least one exogenous invariant natural killer T cell receptor (iNKT TCR) nucleic acid molecule. Further disclosed are iNKT TCR nucleotide sequences and codon optimized sequences for expression.

Described herein are compositions and methods for treating cancer through the combination of tumor antigen-pulsed dendritic cells and Dengue Virus. The combination of the two forms of therapeutic intervention provides enhanced tumor cell reduction compared to either alone. The cancer targeted by compositions and methods described herein may be a solid cancer or blood cancer.

Disclosed are pharmaceutical compositions for inducing an immune response against tumor cells comprising tumor cells which are made apoptotic by treatment with high hydrostatic pressure and dendritic cells, and methods for producing such compositions.

The present invention contemplates dendritic cell compositions. The dentritic cell compositions employ MHC class-II targeting signals fused to an antigen or fragment thereof to obtain MHC II presentation of the antigen or fragment thereof. In particular, the invention refers to a dendritic cell vaccine comprising dendritic cells expressing a MHC class-II targeting signal fused to an antigen or fragment thereof. Dendritic cell vaccines for the stimulation of an immune response against melanoma-associated antigen are also described.

Dendritic cells containing tumor lysate loaded particles are prepared. The dendritic cells present tumor antigens to elicit the Major Histocompatibility Complex class I pathway and can be used as a vaccine to treat cancer, including ocular melanoma.