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Cultivation of PCV2 in swine testicle cells using the shell vial technique and monitoring of viral replication by qPCR and RT-qPCR
Universidade Estadual Paulista (UNESP)
  • Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
  • Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
Sponsorship Process Number: 
  • FAPESP: 06/57976-6
  • FAPESP: 06/59002-9
  • CNPq: 471070/2007-6
  • CNPq: 500905/2007-0
  • CNPq: 12748/2008-6
Porcine circovirus type 2 (PCV2) is difficult to isolate. Currently, no published articles have used the shell vial technique to isolate PCV2. In addition, the action of D-glucosamine on swine testicle cells (ST) has not been evaluated properly. Thus, the aim of this study was to determine an optimal concentration of D-glucosamine and to test the shell vial technique for PCV2 propagation in ST cells. The optimal concentration of D-glucosamine was determined to be 100 mM. Because PCV2 is noncytopathic, the traditional adsorption was compared to the shell vial technique for 15 passages by qPCR, and RT-qPCR for passages 12 through 15. The quantities of viral DNA (P=0.013) and ORF1-mRNA detected with the shell vial technique were two-fold higher than the obtained with traditional adsorption. The levels of ORF2-mRNA were similar for both methods; however, by passage 15, a six-fold increase in levels was observed with the shell vial technique. Therefore, the shell vial technique was more efficient for the cultivation of PCV2, and qPCR/RT-qPCR can be used to monitor viral replication. In addition, a high viral load (>2.7 x 10(10) DNA copies/ml) and high levels of viral mRNA expression indicated that the ST cells were persistently infected. (C) 2013 Elsevier B.V. All rights reserved.
Issue Date: 
Journal Of Virological Methods. Amsterdam: Elsevier Science Bv, v. 196, p. 82-85, 2014.
Time Duration: 
Elsevier B.V.
  • Porcine circovirus 2
  • Swine testicle cells
  • Quantitative PCR
  • Shell vial technique
  • Centrifugal enhancement
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Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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