molecular cloning of genomic and cdna sequences encoding for cellular receptors for poliovirus

摘要

The subject invention provides an isolated nucleic acid molecule which comprises nucleic acid encoding a polypeptide which has the biological activity of a receptor for picornavirus and in addition, provides a purified polypeptide which has this activity. The subject invention also provides a method for inducing the production of a polypeptide which includes the use of expression vectors in a host vector system. Therapeutic compositions comprising purified polypeptides which have the biological activity of a receptor for picornavirus are also provided for as are methods of treating and preventing human poliovirus infection. Further, the subject invention provides a method of producing a transgenic animal expressing human picornavirus. The subject invention provides a method of testing the efficacy of a picornavirus vaccine which comprises administering the vaccine to a transgenic animal described above and determining whether the resulting transgenic animal is protected from infection by human picornavirus. Lastly, a method of testing the virulence of a picornavirus vaccine is provided.