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Updated: Jan 23, 2026

Early Viral Entry Assays for the Identification and Evaluation of Antiviral Compounds
Published on: October 29, 2015
Anti-Siglec-1 antibodies block Ebola viral uptake and decrease cytoplasmic viral entry
Daniel Perez-Zsolt1,2, Itziar Erkizia1, Maria Pino1
1IrsiCaixa AIDS Research Institute, Badalona, Spain.
Abstract:
Several Ebola viruses cause outbreaks of lethal haemorrhagic fever in humans, but developing therapies tackle only Zaire Ebola virus. Dendritic cells (DCs) are targets of this infection in vivo. Here, we found that Ebola virus entry into activated DCs requires the sialic acid-binding Ig-like lectin 1 (Siglec-1/CD169), which recognizes sialylated gangliosides anchored to viral membranes. Blockage of the Siglec-1 receptor by anti-Siglec-1 monoclonal antibodies halted Ebola viral uptake and cytoplasmic entry, offering cross-protection against other ganglioside-containing viruses such as human immunodeficiency virus type 1.
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