Picornavirus receptor down-regulation by plasminogen activator inhibitor type 2.
نویسندگان
چکیده
Therapeutic interference with virus-cell surface receptor interactions represents a viable antiviral strategy. Here we demonstrate that cytoplasmic expression of the serine protease inhibitor (serpin), plasminogen activator inhibitor type 2 (PAI-2), affords a high level of protection from lytic infection by multiple human picornaviruses. The antiviral action of PAI-2 was mediated primarily through transcriptional down-regulation of the following virus receptors: intercellular adhesion molecule 1 (ICAM-1, a cellular receptor for the major group of rhinoviruses), decay-accelerating factor (a cellular receptor for echoviruses and coxsackieviruses), and to a lesser extent the coxsackie-adenovirus receptor protein (a cellular receptor for group B coxsackieviruses and group C adenoviruses). Expression of related cell surface receptors, including membrane cofactor protein and the poliovirus receptor, remained unaffected. These findings suggest that PAI-2 and/or related serpins may form the basis of novel antiviral strategies against picornavirus infections and also therapeutic interventions against ICAM-1-mediated respiratory inflammation.
منابع مشابه
J . Virol . Suhrbier D . R . Shafren , J . Gardner , V . H . Mann , T . M . Antalis and A . Plasminogen Activator Inhibitor Type 2 Picornavirus Receptor Down - Regulation
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عنوان ژورنال:
- Journal of virology
دوره 73 9 شماره
صفحات -
تاریخ انتشار 1999