ArticlebioRxiv : the preprint server for biology2026
Prefusion-specific glycoprotein B human antibodies protect against neonatal HSV-2 infection.
Article in bioRxiv : the preprint server for biology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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14 authors.
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Abstract
Herpes simplex virus (HSV) causes severe neonatal infections and long-term neurological issues, with antivirals offering limited efficacy and no approved vaccines. Viral entry requires glycoprotein B (gB) for membrane fusion, yet no human antibodies to the prefusion form of gB have been identified, and antibodies targeting vulnerable epitopes are limited. We used prefusion-stabilized HSV-2 gB and LIBRA-seq technology to analyze B cells from seropositive and healthy donors, discovering four prefusion-specific human antibodies binding unique gB epitopes as determined by cryo-EM. Antibodies 5-18 and 3-6 showed strong cross-neutralization against HSV-1 and HSV-2, offering protection in a neonatal mouse model. These findings highlight the molecular and structural determinants of HSV-2 prefusion gB recognition by human antibodies and demonstrate the translational potential of prefusion-specific gB antibodies.
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