8WIE

Peptide 10-1/FTH1-1 Complex

Summary for 8WIE

• Entry DOI: 10.2210/pdb8wie/pdb
• Descriptor: Peptide 10-1,Ferritin heavy chain, FE (III) ION, CALCIUM ION, ... (4 entities in total)
• Functional Keywords: nano-delivery platform, de novo design, ferritin, rabies virus glycoprotein domain iii (rabv-gdiii), gdiii-ferritin nano-vaccine, stabilized, strong immune response, metal binding protein
• Biological source: Homo sapiens (human); More
• Total number of polymer chains: 6
• Total formula weight: 137818.62

Authors

Fu, D.,Wang, M.,Guo, Y. (deposition date: 2023-09-24, release date: 2024-09-25, Last modification date: 2025-04-09)

Primary citation

Fu, D.,Wang, W.,Zhang, Y.,Zhang, F.,Yang, P.,Yang, C.,Tian, Y.,Yao, R.,Jian, J.,Sun, Z.,Zhang, N.,Ni, Z.,Rao, Z.,Zhao, L.,Guo, Y.
Self-assembling nanoparticle engineered from the ferritinophagy complex as a rabies virus vaccine candidate.
Nat Commun, 15:8601-8601, 2024

PubMed Abstract: Over the past decade, there has been a growing interest in ferritin-based vaccines due to their enhanced antigen immunogenicity and favorable safety profiles, with several vaccine candidates targeting various pathogens advancing to phase I clinical trials. Nevertheless, challenges associated with particle heterogeneity, improper assembly and unanticipated immunogenicity due to the bulky protein adaptor have impeded further advancement. To overcome these challenges, we devise a universal ferritin-adaptor delivery platform based on structural insights derived from the natural ferritinophagy complex of the human ferritin heavy chain (FTH1) and the nuclear receptor coactivator 4 (NCOA4). The engineered ferritinophagy (Fagy)-tag peptide demonstrate significantly enhanced binding affinity to the 24-mer ferritin nanoparticle, enabling efficient antigen presentation. Subsequently, we construct a self-assembling rabies virus (RABV) vaccine candidate by noncovalently conjugating the Fagy-tagged glycoprotein domain III (G) of RABV to the ferritin nanoparticle, maintaining superior homogeneity, stability and immunogenicity. This vaccine candidate induces potent, rapid, and durable immune responses, and protects female mice against the authentic RABV challenge after single-dose administration. Furthermore, this universal, ferritin-based antigen conjugating strategy offers significant potential for developing vaccine against diverse pathogens and diseases.

PubMed: 39366932
DOI: 10.1038/s41467-024-52908-z

Experimental method

X-RAY DIFFRACTION (2.3 Å)