Studies on isolation of rhinopneumonitis virus from Korean horses and its immunogenicity II. Studies on characters and immunogenicity of equine herpesvirus

국내 말로부터 비폐렴바이러스의 분리 및 면역원성에 관한 연구 II. 국내 분리 말 비폐렴바이러스의 특성 및 면역원성 조사

  • Cho, Gil-jae (Korean Racing Association, Cheju Race Course) ;
  • Kim, Bong-hwan (College of Veterinary Medicine, Kyungpook National University) ;
  • Lee, Du-sik (Department of Veterinary Medicine, Cheju National University) ;
  • Oh, Moon-you (Department of Biology, Cheju National University) ;
  • Ko, Mi-hee (Department of Biology, Cheju National University)
  • Received : 1995.05.09
  • Published : 1995.10.30

Abstract

The study was carried out to characterize the properties of Korean isolates of EHV from aborted fetuses and determine envelope protein profiles. The results obtained were summarized as follows; 1. Two strains of EHV was isolated from 2 liver samples among 10 aborted fetuses from which the virus isolation was attempted. 2. Morphological and some enzymatic properties of the Korean isolates of EHV which was designated as $LC_1$ and $LC_2$ was identical to those of a reference strain of Australia-N of EHV-1. The Korean isolates of EHV could be propagated on ED cell culture and they formed typical plaques 1 to 2 days after infection in the ED cells from which typical cuboidal particles of 150~170 nm diameter herpesvirus were observed. The virus could be detected specifically from neucleus and cytoplasm of infected cells by flourescent antibody technique using FITC labelled anti-Aust IV(EHV-1) antiserum. The Korean isolates, $LC_1$ and $LC_2$ were specifically neutralized by anti Aust IV antiserum and reacted positively to CELISA. 3. The structural polypeptides of purified enveloped virions of $LC_1$ and $LC_2$ isolates of EHV were determined by SDS-polyacrylamide gel electrophoresis to identify the envelope glycoproteins. $LC_1$ and $LC_2$ strains revealed 14 glycoproteins ranging in molecular weight from 190 kD to 31 kD while 17 structural proteins of Aust IV(EHV-1), of which 14 were identical to those of $LC_1$ and $LC_2$, were identified. Upon immunoblotting by rabbit antiserum against EHV isolates and EHV-1(Aust IV), 4 immunogenic proteins of $LC_1$ and $LC_2$ were 135 kD, 88 kD, 64 kD and 59 kD, of which 135 kD, 88 kD and 64 kD proteins were also found in Aust IV(EHV-1).

Acknowledgement

Supported by : 한국학술진흥재단