Epitope focusing by variable effective antigen surface concentration
The present disclosure provides compositions and methods for the generation of an antibody or immunogenic composition, such as a vaccine, through epitope focusing by variable effective antigen surface concentration. Generally, the composition and methods of the disclosure comprise three steps: a “design process” comprising one or more in silico bioinformatics steps to select and generate a library of potential antigens for use in the immunogenic composition; a “formulation process”, comprising in vitro testing of potential antigens, using various biochemical assays, and further combining two or more antigens to generate one or more immunogenic compositions; and an “administering” step, whereby the immunogenic composition is administered to a host animal, immune cell, subject or patient. Further steps may also be included, such as the isolation and production of antibodies raised by host immune response to the immunogenic composition.
1. A nucleic acid vaccine for eliciting an immune response in a subject, the nucleic acid vaccine comprising one or more nucleic acids that collectively encode at least six different antigens that each comprise a common target epitope, and wherein, upon administration of the vaccine, each individual antigen of the at least six different antigens is expressed at a level that alone is insufficient to elicit an immune response.
2. The nucleic acid vaccine of claim 1 , wherein the at least six different antigens are viral antigens.
3. A method for treating or reducing the likelihood of a disease in a human subject in need thereof, the method comprising administering the nucleic acid vaccine of claim 1 to the human subject, whereby the disease or the likelihood of disease is treated.
4. The method of claim 3 , wherein the disease is an infectious disease, an autoimmune disease, an inflammatory disease, a neurological disease, an addiction, a cardiovascular disease, an endocrine disease, or a cancer.
5. The method of claim 3 , wherein each antigen of the at least six antigens is selected from the group consisting of Pneumococcal antigens, tuberculosis antigens, anthrax antigens, Human Immunodeficiency Virus (HIV) antigens, influenzae antigens, Pertussis antigens, Staphylococcus aureus antigens, Meningococcal antigens, Haemophilus antigens, Human Papillomavirus (HPV) antigens, and combinations thereof.
6. The method of claim 3 , wherein each antigen of the at least six antigens is a protein.
7. The method of claim 3 , further comprising administering to the subject an agent selected from the group consisting of a B-cell targeting moiety, a T-cell targeting moiety, an anti-viral agent, a chemotherapeutic agent, a toxin, an immunostimulatory agent, an adjuvant, and a hapten.
8. The method of claim 3 , wherein each antigen of the at least six antigens is a bacterial protein.
9. The method of claim 3 , wherein each antigen of the at least six antigens comprises an influenzae antigen.
10. The method of claim 9 , wherein each influenzae antigen is a seasonal flu antigen.
11. The method of claim 9 , wherein each influenzae antigen is an epidemic flu antigen.
12. The method of claim 3 , wherein the disease comprises influenza.
13. The method of claim 3 , wherein the common target epitope has at least 90% identity across each of the at least six antigens.
14. The method of claim 13 , wherein each antigen of the at least six antigens shares at most 85% sequence identity outside of the common target epitope.
15. The method of claim 3 , wherein the common target epitope is a portion of an influenza virus hemagglutinin (HA) protein.