Details

Autor(en) / Beteiligte

• Chen, Yi-Kai
• Simon, Isabella A
• Maslov, Ivan
• Oyarce-Pino, Ivan E
• Kulkarni, Ketav
• Hopper, Denham
• Aguilar, Marie-Isabel
• Vankadari, Naveen
• Broughton, Brad RS
• Del Borgo, Mark P

Titel

A switch in N-terminal capping of β-peptides creates novel self-assembled nanoparticles

Ist Teil von

• RSC advances, 2023-10, Vol.13 (42), p.2941-2947

Ort / Verlag

Cambridge: Royal Society of Chemistry

Erscheinungsjahr

2023

Quelle

Free E-Journal (出版社公開部分のみ）

Beschreibungen/Notizen

• Small tripeptides composed entirely of β 3 -amino acids have been shown to self-assemble into fibres following acylation of the N-terminus. Given the use of Fmoc as a strategy to initiate self-assembly in α-peptides, we hypothesized that the acyl cap can be replaced by an Fmoc without perturbation to the self-assembly and enable simpler synthetic protocols. We therefore replaced the N -acyl cap for an Fmoc group and herein we show that these Fmoc-protected β 3 -peptides produce regular spherical particles, rather than fibrous structures, that are stable and capable of encapsulating cargo. We then demonstrated that these particles were able to deliver cargo to cells without any obvious signs of cytotoxicity. This is the first description of such regular nanoparticles derived from Fmoc-protected β 3 -peptides. Alteration to the N-terminal cap of β-peptides switches self-assembly from fibrillar to spherical structures.