ArticlebioRxiv : the preprint server for biology2026
A novel antiviral strategy targeting human metapneumovirus through pH modulation in human airway epithelial cells.
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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Abstract
Human metapneumovirus (hMPV) is a major cause of respiratory infections, particularly among infants, older adults, and immunocompromised individuals, yet no approved vaccines or targeted antiviral therapies are currently available. pH-regulated processes, including airway epithelial physiology, endosomal acidification, and viral fusion mediated by the fusion (F) protein, are critical for hMPV infection. This study evaluates PHOH-001, an inhaled alkaline buffer, as a potential therapeutic strategy to modulate airway epithelial pH and inhibit hMPV infection. Using a recombinant hMPV expressing green fluorescent protein (rhMPV-GFP), viral replication was assessed in primary human airway epithelial cells (HAECs). PHOH-001 significantly reduced GFP expression at 72 hours post-infection in both submerged and air-liquid interface (ALI) cultures, with effects comparable to those of the endosomal acidification inhibitor bafilomycin A1. In Vero E6 cells, used as a mechanistic
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