Japanese Journal of Veterinary Research;Volume 46, Number 4

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Single-step reverse transcriptase-polymerase chain reaction for detection of Borna disease virus RNA in vitro and in vivo

MIZUTANI, Tetsuya;OGINO, Michiko;NISHINO, Yoshii;KIMURA, Takashi;INAGAKI, Hisae;HAYASAKA, Daisuke;KARIWA, Hiroaki;TAKASHIMA, Ikuo

Permalink : http://hdl.handle.net/2115/2716
JaLCDOI : 10.14943/jjvr.46.4.165
KEYWORDS : Borna disease virus;single-step reverse transcriptase-polymerase chain reaction

Abstract

There are few copies of Borna disease virus (BDV) genome in peripheral blood mononuclear cells and no reliable standard reverse transcriptase-polymerase chain reaction (RT-PCR) method for the detection of BDV RNA, which is both highly sensitive and free of contamination. Single-step RT-PCR, in which both reverse transcription and amplification by Taq DNA polymerase work efficiently in a single buffer, was applied to detect the p24 region of BDV RNA in vitro and in vivo. Using in vitro synthesized RNA, it was demonstrated that at least 100 copies of BDV RNA could be detected and the sensitivity and specificity were nearly equal to those obtained by RT-nested PCR. We could detect BDV RNA from more than 1 pg of cellular RNA obtained from BDV-persistently infected MDCK cells. Furthermore, this method was successfully performed on brain specimens obtained from a BDV-infected rat at 11 weeks post-inoculation. This single-step RT-PCR method will be convenient for detecting limited amounts of BDV RNA in various cells and tissue samples.

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