Abstract
Viral nervous necrosis (VNN) caused by a nodavirus (striped jack nervous necrosis virus : SJNNV) is a serious problem in seed production process of striped jack Pseudocaranx dentex in Japan. Mouse monoclonal antibodies (MAbs) to SJNNV were produced by using a homogenate of infected larval striped jack. Among 8 MAbs reacting with the homogenate of infected larvae in enzyme-linked immunosorbent assay (ELISA), three MAbs (SJ-102B, SJ-204D, SJ-207C) were proved to recognize the 42 kDa coat protein of SJNNV by Western blot analysis. An in vivo neutralization test, where larval striped jack were exposed to purified SJNNV (100ng/ml) or the virus treated with MAbs (1mg) and the resultant infection with SJNNV in larvae was monitored by ELISA using an anti-SJNNV rabbit serum, exhibited that two MAbs SJ-102B and SJ-204D have neutralizing activity against SJNNV.
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