SU proteins from virulent and avirulent EIAV demonstrate distinct biological properties. Academic Article

abstract

• Biologic activity of equine infectious anemia virus (EIAV) surface (SU) glycoprotein was assayed in a mouse model. Recombinant SU from virulent EIAV17 (SU17), administered intraperitoneally to mouse pups, induced dose-dependent diarrheal responses similar to those reported for SIV SU (Virology 277 (2000) 250). SU17 caused fluid accumulation without histological lesions in mouse intestinal loops, induced chloride secretory currents in Ussing chambers and increased inositol 1,4,5 triphosphate (IP3) levels in HT29 cells. An SU17 peptide, SU17(299-330), provoked a dose-dependent diarrheal response akin to enterotoxic peptides from SIV. In contrast, SU from an avirulent EIAV strain failed to induce a dose response in mouse pups and produced lower levels of activity than SU17 in Ussing chambers and IP3 assays. These results demonstrate that a mouse pup model is useful to monitor EIAV SU biologic activity, showing clear differences between the activities of SU derived from virulent and avirulent viruses, and may provide a useful screen of EIAV virulence.

authors

• Payne, Susan

published proceedings

• Virology

author list (cited authors)

• Ball, J. M., Swaggerty, C. L., Pei, X., Lim, W. S., Xu, X., Cox, V. C., & Payne, S. L.

citation count

• 6

publication date

• March 2005

publisher

• Elsevier  Publisher

keywords

• Amino Acid Sequence
• Animals
• Animals, Newborn
• Diarrhea
• Disease Models, Animal
• Glycoproteins
• Infectious Anemia Virus, Equine
• Intestines
• Mice
• Mice, Inbred BALB C
• Molecular Sequence Data
• Peptide Fragments
• Viral Envelope Proteins
• Virulence

Digital Object Identifier (DOI)

• 10.1016/j.virol.2004.12.022

start page

• 132

end page

• 144

volume

• 333

issue

• 1

URL

• http://dx.doi.org/10.1016/j.virol.2004.12.022