Dissecting antibody-dependent enhancement modulation by Fc-modified cross-neutralizing human monoclonal antibody.

ABSTRACT:

Background

Dengue is a mosquito-borne disease caused by four dengue virus serotypes (DENV1 to DENV4). Secondary infections can generate flavivirus cross-reactive antibodies at sub-neutralizing levels. This phenomenon can significantly increase the severity of secondary infections through antibody-dependent enhancement (ADE). ADE is associated with a high risk of viral infection in immune effector cells, triggering cytokine cascades and activating the complement system, which can lead to severe symptoms. Despite extensive studies, therapeutic antibodies, particularly fully human monoclonal antibodies, which could serve as candidates for immune passive therapy, have not yet been discovered.

Methodology

This study generated LALA-mutated human monoclonal antibody clone B3B9 (LAL

SUBMITTER: Injampa S 

PROVIDER: S-EPMC12640126 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature