The invention provides a compound comprising one, two, three or more non-natural HRC sequence of a viral spike peptide conjugated to a hydrophobic moiety via an optional linker. The hydrophobic moiety can be a membrane integrating ligand, such as a cholesterol, a sphingolipid, a glycolipid, a glycerophospholipid. The non-natural viral spike peptide is preferably a coronavirus spike protein characterized by one or more D-amino acids. The peptides of the invention inhibit viral fusion. The invention includes compositions for the delivery of compounds of the invention, such as pulmonary or nasal delivery. The invention also provides a method of treating or preventing a viral infection, including for example a SARS-CoV-2 (COVID-19) infection, in a subject in need thereof comprising administering an effective amount of a compound of the invention.

The invention relates to immunogenic peptides comprising T-cell epitopes and oxidoreductase motifs with increased activity, and their use in regulating the immune response in subjects.

The present invention relates to immunogenic compositions and methods for producing them, and in particular, immunogenic compositions comprising a protein antigen cross linked to an oxoadenine adjuvant.

Liposomes containing tau peptides, preferably phosphorylated tau peptides, and conjugates containing tau peptides, preferably phosphorylated tau peptides, conjugated to an immunogenic carrier are described. Pharmaceutical compositions and uses of the liposomes and/or conjugates for treating or preventing a neurodegenerative disease or disorder, such as Alzheimer's Disease, are also described.

A cancer vaccine is provided including a recombinant nucleic acid encoding a self-activating chimeric signaling protein, and especially chimeric TNF family ligand-receptor proteins, and a tumor-associated antigen. In a preferred embodiment, the cancer vaccine may further include a nucleic acid segment encoding an IL-15 superagonist. In addition, the cancer vaccine can be co-administered with a genetically modified bacteria or yeast as an adjuvant to increase the payload expression of the cancer vaccine. Advantageously, cells expressing such combination of molecules will enhance immune reaction against tumor cells. Compositions and methods are presented that allow for an enhanced immune response against a vaccine composition, and particularly a recombinant adenoviral expression system that is used as a therapeutic agent. Most preferably, immune therapeutics are administered such that a protein or nucleotide are co-located with a therapeutic antigen, preferably via co-expression of the protein.

The invention describes new peptides containing epitopes recognized by CD4+ natural killer T (NKT) cells for increasing activity for use in infectious diseases, autoimmune diseases, immune reaction to administration of allofactors, allergic diseases, therapy of tumors, prevention of graft rejection and prevention of immunization against viral proteins used in gene therapy or gene vaccination.

The present invention concerns therapeutics for autoimmune diseases and provides removal of inflammation-causing autoantibodies. In order to target the disease in the most efficient manner, a nanoconjugate complex is provided, comprising at least one specific antigen component recognized by autoantibodies related to the autoimmune disease, at least one helper moiety, and a nanoparticle carrier connecting the components. Each component of the therapeutic nanoconjugate complex has a specific function, yielding a nanoconjugate complex which facilitates specific binding, forming a stable antibody-therapeutic complex in the blood stream and rapid clearance of this complex to the liver.

In one aspect, the invention relates to an immunogenic composition comprising modified O-polysaccharide molecules derived from E. coli lipopolysaccharides and conjugates thereof. Multivalent vaccines may be prepared by combining two or more monovalent immunogenic compositions for different E. coli serotypes. In one embodiment, the modified O-polysaccharide molecules are produced by a recombinant bacterium that includes a wzz gene.

The present invention provides anti-CLDN18.2 antibody-drug conjugates which are effective for treating and/or preventing cancer diseases associated with cells expressing CLDN18.2, including gastric cancer, esophageal cancer, pancreatic cancer, lung cancer, ovarian cancer, colon cancer, hepatic cancer, head-neck cancer, and cancer of the gallbladder and metastases thereof.

The present invention provides a vaccine formulation for use in the prevention and/or treatment of a cancer, comprising a complex of a hyaluronic acid derivative having an introduced hydrophobic group, and an antigen.