Abstract:
:Gene transfer to differentiated airway epithelia with existing viral vectors is very inefficient when they are applied to the apical surface. This largely reflects the polarized distribution of receptors on the basolateral surface. To identify new receptor-ligand interactions that might be used to redirect vectors to the apical surface, we investigated the process of infection of airway epithelial cells by human coronavirus 229E (HCoV-229E), a common cause of respiratory tract infections. Using immunohistochemistry, we found the receptor for HCoV-229E (CD13 or aminopeptidase N) localized mainly to the apical surface of airway epithelia. When HCoV-229E was applied to the apical or basolateral surface of well-differentiated primary cultures of human airway epithelia, infection primarily occurred from the apical side. Similar results were noted when the virus was applied to cultured human tracheal explants. Newly synthesized virions were released mainly to the apical side. Thus, HCoV-229E preferentially infects human airway epithelia from the apical surface. The spike glycoprotein that mediates HCoV-229E binding and fusion to CD13 is a candidate for pseudotyping retroviral envelopes or modifying other viral vectors.
journal_name
J Viroljournal_title
Journal of virologyauthors
Wang G,Deering C,Macke M,Shao J,Burns R,Blau DM,Holmes KV,Davidson BL,Perlman S,McCray PB Jrdoi
10.1128/jvi.74.19.9234-9239.2000subject
Has Abstractpub_date
2000-10-01 00:00:00pages
9234-9issue
19eissn
0022-538Xissn
1098-5514journal_volume
74pub_type
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