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Rentier C, Fukumoto K, Taguchi A, Hayashi Y. The 3-nitro-2-pyridinesulfenyl group: synthesis and applications to peptide chemistry. J Pept Sci 2017; 23:496-504. [DOI: 10.1002/psc.2964] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2016] [Revised: 12/07/2016] [Accepted: 12/07/2016] [Indexed: 11/09/2022]
Affiliation(s)
- Cédric Rentier
- Department of Medicinal Chemistry; Tokyo University of Pharmacy and Life Sciences; 1432-1 Horinouchi Hachioji Tokyo 192-0392 Japan
| | - Kentarou Fukumoto
- Department of Medicinal Chemistry; Tokyo University of Pharmacy and Life Sciences; 1432-1 Horinouchi Hachioji Tokyo 192-0392 Japan
| | - Akihiro Taguchi
- Department of Medicinal Chemistry; Tokyo University of Pharmacy and Life Sciences; 1432-1 Horinouchi Hachioji Tokyo 192-0392 Japan
| | - Yoshio Hayashi
- Department of Medicinal Chemistry; Tokyo University of Pharmacy and Life Sciences; 1432-1 Horinouchi Hachioji Tokyo 192-0392 Japan
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Léonetti M, Thai R, Cotton J, Leroy S, Drevet P, Ducancel F, Boulain JC, Ménez A. Increasing Immunogenicity of Antigens Fused to Ig-Binding Proteins by Cell Surface Targeting. The Journal of Immunology 1998. [DOI: 10.4049/jimmunol.160.8.3820] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Abstract
Fusion of antigenic proteins to Ig-binding proteins such as protein A from Staphylococcus aureus and its derived ZZ fragment is known to increase immunogenicity of the fused Ag in vivo. To shed light on the origin of this effect, we used snake toxins as Ags and observed that 1) fusion of toxins to ZZ enhanced their presentation to a toxin-specific T cell hybridoma (T1B2), using A20 B lymphoma cells, splenocytes, or peritoneal exudate cells as APCs; 2) this enhancement further increased when the number of fused Ig-binding domains varied from two with ZZ to five with protein A; and 3) the phenomenon vanished when the fusion protein was preincubated with an excess of free ZZ or when P388D1 monocytes cells were used as APCs. Therefore, ZZ-fused toxins are likely to be targeted to surface Igs of APCs by their ZZ moiety. Furthermore, ZZ-α and toxin α stimulated similar profiles of toxin-specific T cells in BALB/c mice, suggesting a comparable processing and presentation in vivo for both toxin forms. To improve the targeting efficiency, ZZ-α was noncovalently complexed to various Igs directed to different cell surface components of APCs. The resulting complexes were up to 103-fold more potent than the free toxin at stimulating T1B2. Also, they elicited both a T cell and an Ab response in BALB/c mice, without the need of any adjuvant. This simple approach may find practical applications by increasing the immunogenicity of recombinant proteins without the use of adjuvant.
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Affiliation(s)
- Michel Léonetti
- Département d’Ingéniérie et d’Études des Protéines (DIEP) C. E. Saclay, Gif-Sur-Yvette, France
| | - Robert Thai
- Département d’Ingéniérie et d’Études des Protéines (DIEP) C. E. Saclay, Gif-Sur-Yvette, France
| | - Joël Cotton
- Département d’Ingéniérie et d’Études des Protéines (DIEP) C. E. Saclay, Gif-Sur-Yvette, France
| | - Sandrine Leroy
- Département d’Ingéniérie et d’Études des Protéines (DIEP) C. E. Saclay, Gif-Sur-Yvette, France
| | - Pascal Drevet
- Département d’Ingéniérie et d’Études des Protéines (DIEP) C. E. Saclay, Gif-Sur-Yvette, France
| | - Frédéric Ducancel
- Département d’Ingéniérie et d’Études des Protéines (DIEP) C. E. Saclay, Gif-Sur-Yvette, France
| | - Jean Claude Boulain
- Département d’Ingéniérie et d’Études des Protéines (DIEP) C. E. Saclay, Gif-Sur-Yvette, France
| | - André Ménez
- Département d’Ingéniérie et d’Études des Protéines (DIEP) C. E. Saclay, Gif-Sur-Yvette, France
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