Method of inducing immunity against SARS-CoV-2 using spike (s) and nucleocapsid (N)-ETSD immunogens delivered by a replication-defective adenovirus
Disclosed herein are methods for inducing immunity against a virus such as a coronavirus in the mucosal tissue of a patient, include administering a vaccine composition to the patient by oral administration (e.g., nasal injection, nasal inhalation, oral inhalation, and/or oral ingestion). Also disclosed are compositions for assaying the presence of antiviral antibodies induced by the administered vaccine or the presence of viral proteins in a saliva sample include a stabilizing solution and may also include the use of aragonite particle beads. Compositions and methods are presented for prevention and/or treatment of a coronavirus disease wherein the composition comprises comprises a recombinant entity. The recombinant entity is bivalent, comprising a nucleic acid encoding a coronavirus 2 nucleocapsid protein CoV2 nucleocapsid protein fused to an endosomal targeting sequence, and a nucleic acid encoding a CoV2 spike protein sequence optimized for cell surface expression.
1. A method of inducing immunity against a severe acute respiratory syndrome (SARS) coronavirus 2 (SARS-CoV2) in mucosal tissue of a patient, the method comprising administering a vaccine composition to the patient by delivery to nasal mucosa, wherein the vaccine composition comprises a replication defective adenovirus, and wherein the adenovirus comprises an E1 gene region deletion and an E2b gene region deletion, a nucleic acid portion that encodes a SARS-CoV2 S protein, and a nucleic acid portion that encodes a chimeric protein comprising a SARS-CoV2 N protein and an endosomal targeting sequence.
2. The method of claim 1 , further comprising administering to the patient an anti-SARSCoV2 vaccine by injection, wherein the anti-SARS-CoV2 vaccine injection comprises a nucleotide encoding SARS-CoV2 spike (S) and/or nucleocapsid (N) protein, and wherein injection includes intramuscular (IM) injection, (IV) intravenous injection, and/or subcutaneous injection.
3. The method of claim 2 , wherein the vaccine composition of claim 1 is administered after the anti-SARS-CoV2 vaccine injection.
4. The method of claim 2 , wherein the anti-SARS-CoV2 vaccine injection comprises a lipid nanoparticle encasing the nucleotide encoding SARS-CoV2 S and/or N protein.
5. The method of claim 2 , wherein the intranasal vaccine composition is administered as a booster immunization at least one week after the anti-SARS-CoV2 vaccine injection.
6. The method of claim 5 , wherein the intranasal vaccine composition is administered at least two weeks after the anti-SARS-CoV2 vaccine injection.
7. The method of claim 1 , wherein the adenovirus further comprises an E3 gene region deletion and/or an E4 gene region deletion.
8. The method of claim 1 , further comprising analyzing a sample of saliva from the patient for antibodies targeting the coronavirus and/or for a protein specific to the coronavirus.
9. The method of claim 8 , further comprising administering a second dose of the intranasal vaccine composition to the patient.
10. The method of claim 1 , wherein the intranasal vaccine composition comprises SEQ ID NO:11.
11. The method of claim 1 , wherein the intranasal vaccine composition comprises SEQ ID NO:13.