Long peptides of 22-45 amino acid residues that induce and/or enhance antigen specific immune responses
US9650423B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 21, 2015 |
| Grant date | May 16, 2017 |
| Priority date | — |
| Expiry date | Aug 21, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC12N2710/20034
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Epitopes derived from human papilloma virus and peptides having a size of about 22-45 amino acid residues comprising minimal T cell epitopes are disclosed. Also disclosed are clinically relevant approaches for immunizing subjects against (Myco) bacterially and/or virally infected cells or tumor cells. Peptide sequences of 22-35 amino acid residues in length can induce both peptide-specific CD8+ cytolytic cells and CD4+ T-helper cells. Moreover, vaccination with 22-35 residue long peptides results in a more vigorous CD8+ cytolytic T-cell response than vaccination with peptides of the exact minimal CTL epitope length. The intrinsic capacity of certain minimal CTL epitopes which instead of activating cytolytic effector cells tolerize these cytolytic cells, can be overcome by use of these 22-35 amino acid long peptides. Also disclosed are clinically relevant approaches for vaccination and/or treatment of subjects against HPV and methods and uses suited to treat subjects suffering from progressive lesions and/or cervical cancer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.