The invention relates to immunogenic compositions and vaccines containing a coronavirus (e.g., Wuhan coronavirus (2019-nCoV; also referred to as SARS-CoV-2)) protein or a polynucleotide encoding a coronavirus (e.g., Wuhan coronavirus (2019-nCoV; SARS-CoV-2)) protein and uses thereof. The invention also provides methods of treating and/or preventing a coronavirus (e.g., Wuhan coronavirus (2019-nCoV; SARS-CoV-2)) infection by administering an immunogenic composition or vaccine to a subject (e.g., a human). The invention also provides methods of detecting and/or monitoring a protective anti-coronavirus (e.g., Wuhan coronavirus (2019-nCoV; SARS-CoV-2)) antibody response (e.g., anti-coronavirus antibody response, e.g., anti-2019-nCoV antibody response, e.g., anti-Spike antibody response, e.g., anti-Spike neutralizing antibody response). The present invention relates to isolated nucleic and/or recombinant nucleic acid encoding a coronavirus S protein, in particular a SARS-CoV-2 S protein, and to the coronavirus S proteins, as well as to the use of the nucleic acids and/or proteins thereof in vaccines.

Compositions and methods for the prevention and/or treatment of a viral infection, in particular of the Coronaviridae family.

A recombinant vesicular stomatitis vims (rVSV) carrying at least one gene that encodes for a MERS-CoV structural protein or modifications thereof. Vaccines or immunogenic compositions against MERS-CoV, and prime boost immunization platforms a prime boost immunization combination against MERS-CoV including: (a) a prime vaccine or immunogenic composition comprising a rVSV carrying at least one gene that encodes for a MERS-CoV structural protein or modifications thereof, and (b) a boost vaccine or immunogenic composition comprising a rVSV carrying the same at least one gene that encodes for a MERS-CoV structural protein or modifications thereof. The at least one gene can be genetically modified to encode a modified MERS-CoV structural protein that elevates glycoprotein synthesis and trigger efficient humoral immune response.

Present application relates to a strategy for compensating for transesterification degradation of lipid-encapsulated RNA, such as mRNA-LNP, in liquid formulations for high-volume distribution. This involves determining the rate of degradation of the encapsulated RNA and calculating an appropriate overage relative to the intended dose. Alternatively, a higher dose of the RNA may be administered to compensate for loss of effective RNA or the RNA may be formulated in higher purity in anticipation of degradation. The strategy provides a balance between supplying effective and safe products and the need for costly manufacturing processes or transportation hurdles, such as cold-chain supply.

This disclosure relates to methods of promoting immune responses against coronavirus, such as SARS-CoV-2, and compositions related thereto. In certain embodiments, this disclosure relates to methods of vaccinating for coronavirus comprising administering to the subject a composition disclosed herein. In certain embodiments, the composition comprises a recombinant virus such as recombinant MVA that encodes a coronavirus spike protein. In certain embodiments, the coronavirus spike protein comprises a proline mutation at position 986. In certain embodiments, the coronavirus spike protein comprises a proline mutation at position 987.

Described herein is a composition comprising: 1) an ARC polypeptide or an endogenous gag (endo-gag) polypeptide; 2) a pathogen-associated antigen; and 3) an adjuvant. Also described herein are vaccines and methods of vaccination using compositions comprising: 1) an ARC polypeptide or an endogenous gag (endo-gag) polypeptide; 2) a pathogen-associated antigen; and 3) an adjuvant.

The present invention relates to a recombinant spike protein of the COVID-19 virus forming a trimer and a method for mass-producing the recombinant spike protein, and more specifically to a method for designing a recombinant gene expressing a recombinant spike protein of the COVID-19 virus forming a trimer for the purposes of enhancing immunogenicity and effective antigen delivery, and a method for mass-producing the recombinant spike protein in plants.

RNA replicon derived from a coronavirus with complete or partial deletion of: the gene encoding the E protein and at least 4 genes encoding genus accessory proteins selected from: 3, 4a, 4b and 5, in the case of MERS-CoV. Method of preparation thereof, and their use in vaccine compositions.

A recombinant SARS-CoV2 protein-based vaccine, and method of immunizing, is developed by either embedding the epitopes/domains, or chemically attaching, to an already established vaccine candidate, such as a detoxified recombinant tetanus neurotoxin (DrTeNT), to develop a novel vaccine to immunize against SARS-CoV2. The developed vaccine will have three novel contributions compared to the present vaccine technology; a) providing a novel and very effective vaccine platform; b) priming with DrTeNT will prepare the host immune system for better response; and c) oral delivery of the vaccine candidate with a group of neurotoxin binding proteins (NAPs) from Clostridium sp. A Detoxified recombinant tetanus neurotoxin (DrTeNT) is prepared by mutation of the active site amino acid residues is an effective vaccine candidate, and is to be used for embedding epitopes of SARS-CoV-2 virus protein for vaccination against Covid-19. DrTeNT is a risk-free vaccine, free of formalin or any other chemical adjuvants.

This disclosure provides compositions, pharmaceutical preparations, and uses of polyribonucleotides encoding one or more immunogenic polypeptides. In particular, this disclosure features circular polyribonucleotide encoding one or more immunogenic polypeptides.