5YAX

Crystal structure of a human neutralizing antibody bound to a HBV preS1 peptide

Summary for 5YAX

• Entry DOI: 10.2210/pdb5yax/pdb
• Descriptor: scFv1 antibody, Large envelope protein, SODIUM ION, ... (4 entities in total)
• Functional Keywords: hbv, ntcp, pres1, antibody, fc receptor, immune system
• Biological source: Homo sapiens (Human); More
• Total number of polymer chains: 3
• Total formula weight: 58018.33

Authors

Liu, X.,Zheng, S.,Ye, K.,Sui, J. (deposition date: 2017-09-02, release date: 2017-10-11, Last modification date: 2024-11-13)

Primary citation

Li, D.,He, W.,Liu, X.,Zheng, S.,Qi, Y.,Li, H.,Mao, F.,Liu, J.,Sun, Y.,Pan, L.,Du, K.,Ye, K.,Li, W.,Sui, J.
A potent human neutralizing antibody Fc-dependently reduces established HBV infections
Elife, 6:-, 2017

PubMed Abstract: Hepatitis B virus (HBV) infection is a major global health problem. Currently-available therapies are ineffective in curing chronic HBV infection. HBV and its satellite hepatitis D virus (HDV) infect hepatocytes via binding of the preS1 domain of its large envelope protein to sodium taurocholate cotransporting polypeptide (NTCP). Here, we developed novel human monoclonal antibodies that block the engagement of preS1 with NTCP and neutralize HBV and HDV with high potency. One antibody, 2H5-A14, functions at picomolar level and exhibited neutralization-activity-mediated prophylactic effects. It also acts therapeutically by eliciting antibody-Fc-dependent immunological effector functions that impose durable suppression of viral infection in HBV-infected mice, resulting in reductions in the levels of the small envelope antigen and viral DNA, with no emergence of escape mutants. Our results illustrate a novel antibody-Fc-dependent approach for HBV treatment and suggest 2H5-A14 as a novel clinical candidate for HBV prevention and treatment of chronic HBV infection.

PubMed: 28949917
DOI: 10.7554/eLife.26738

Experimental method

X-RAY DIFFRACTION (2.5 Å)