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Article

Identification of Multiple Replication Stages and Origins in the Nucleopolyhedrovirus of Anticarsia gemmatalis

by
Solange A.B. Miele
1,2,
Carolina S. Cerrudo
1,
Cintia N. Parsza
1,
María Victoria Nugnes
1,
Diego L. Mengual Gómez
3,
Mariano N. Belaich
1,*,† and
P. Daniel Ghiringhelli
1,†
1
Laboratorio de Ingeniería Genética y Biología Celular y Molecular-Área Virosis de Insectos, Instituto de Microbiología Básica y Aplicada (IMBA), Universidad Nacional de Quilmes, CONICET, Bernal B1876BXD, Argentina
2
Institute for Integrative Biology of the Cell (I2BC), Evolution and Maintenance of Circular Chromosomes, CEA, CNRS, Univ. Paris Sud, Université Paris-Saclay, 91190 Saint-Aubin, France
3
Laboratorio de Oncología Molecular, Universidad Nacional de Quilmes, CONICET, Bernal B1876BXD, Argentina
*
Author to whom correspondence should be addressed.
†
These authors contributed equally to this work.
Viruses 2019, 11(7), 648; https://doi.org/10.3390/v11070648
Submission received: 31 May 2019 / Revised: 10 July 2019 / Accepted: 12 July 2019 / Published: 15 July 2019
(This article belongs to the Special Issue Insect Viruses and Pest Management)
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Abstract

To understand the mechanism of replication used by baculoviruses, it is essential to describe all the factors involved, including virus and host proteins and the sequences where DNA synthesis starts. A lot of work on this topic has been done, but there is still confusion in defining what sequence/s act in such functions, and the mechanism of replication is not very well understood. In this work, we performed an AgMNPV replication kinetics into the susceptible UFL-Ag-286 cells to estimate viral genome synthesis rates. We found that the viral DNA exponentially increases in two different phases that are temporally separated by an interval of 5 h, probably suggesting the occurrence of two different mechanisms of replication. Then, we prepared a plasmid library containing virus fragments (0.5–2 kbp), which were transfected and infected with AgMNPV in UFL-Ag-286 cells. We identified 12 virus fragments which acted as origins of replication (ORI). Those fragments are in close proximity to core genes. This association to the core genome would ensure vertical transmission of ORIs. We also predict the presence of common structures on those fragments that probably recruit the replication machinery, a structure also present in previously reported ORIs in baculoviruses.
Keywords: baculovirus; AgMNPV; replication baculovirus; AgMNPV; replication
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MDPI and ACS Style

Miele, S.A.B.; Cerrudo, C.S.; Parsza, C.N.; Nugnes, M.V.; Mengual Gómez, D.L.; Belaich, M.N.; Ghiringhelli, P.D. Identification of Multiple Replication Stages and Origins in the Nucleopolyhedrovirus of Anticarsia gemmatalis. Viruses 2019, 11, 648. https://doi.org/10.3390/v11070648

AMA Style

Miele SAB, Cerrudo CS, Parsza CN, Nugnes MV, Mengual Gómez DL, Belaich MN, Ghiringhelli PD. Identification of Multiple Replication Stages and Origins in the Nucleopolyhedrovirus of Anticarsia gemmatalis. Viruses. 2019; 11(7):648. https://doi.org/10.3390/v11070648

Chicago/Turabian Style

Miele, Solange A.B., Carolina S. Cerrudo, Cintia N. Parsza, María Victoria Nugnes, Diego L. Mengual Gómez, Mariano N. Belaich, and P. Daniel Ghiringhelli. 2019. "Identification of Multiple Replication Stages and Origins in the Nucleopolyhedrovirus of Anticarsia gemmatalis" Viruses 11, no. 7: 648. https://doi.org/10.3390/v11070648

APA Style

Miele, S. A. B., Cerrudo, C. S., Parsza, C. N., Nugnes, M. V., Mengual Gómez, D. L., Belaich, M. N., & Ghiringhelli, P. D. (2019). Identification of Multiple Replication Stages and Origins in the Nucleopolyhedrovirus of Anticarsia gemmatalis. Viruses, 11(7), 648. https://doi.org/10.3390/v11070648

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