Antiviral mode of action of a synthetic brassinosteroid against Junin virus replication

The antiviral mode of action of the synthetic brassinosteroid (22S,23S)-3β-bromo-5α,22,23-trihydroxystigmastan-6-one (6b) against Junin virus replication in Vero cells was investigated. Time-related experiments showed that 6b mainly affects an early event of virus growth cycle. Neither adsorption no...

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Autor principal: Castilla, V.
Otros Autores: Larzábal, M., Sgalippa, N.A, Wachsman, M.B, Coto, C.E
Formato: Capítulo de libro
Lenguaje:Inglés
Publicado: 2005
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024 7 |2 scopus  |a 2-s2.0-27644532739 
024 7 |2 cas  |a (22S,23S)-3beta-bromo-5alpha,22,23-trihydroxystigmastan-6-one; Antiviral Agents; Cholestanones; DNA, Complementary; RNA, Viral; Viral Proteins 
040 |a Scopus  |b spa  |c AR-BaUEN  |d AR-BaUEN 
030 |a ARSRD 
100 1 |a Castilla, V. 
245 1 0 |a Antiviral mode of action of a synthetic brassinosteroid against Junin virus replication 
260 |c 2005 
270 1 0 |m Castilla, V.; Laboratorio de Virología, Departamento de Química Biológica, Pabellón 2, 1428 Buenos Aires, Argentina; email: viviana@qb.fcen.uba.ar 
506 |2 openaire  |e Política editorial 
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504 |a Castilla, V., Mersich, S.E., Candurra, N.A., Damonte, E.B., The entry of Junin virus into Vero cells (1994) Arch. Virol., 136, pp. 363-374 
504 |a Castilla, V., Mersich, S.E., Low-pH-induced fusion of Vero cells infected with Junin virus (1996) Arch. Virol., 141, pp. 1307-1317 
504 |a Chomczynski, P., Sacchi, N., Single step method of RNA isolation by acid guanidinium thiocyanate-phenol-chloroform extraction (1987) Annal. Biochem., 162, pp. 156-159 
504 |a Clegg, J.C.S., Molecular mhylogeny of the arenaviruses (2002) Arenaviruses I, pp. 1-24. , M.B.A. Oldstone Springer-Verlag New York 
504 |a Clouse, S.D., Sasse, J.M., Brassinosteroids: Essential regulators of plant growth and development (1998) Ann. Rev. Plant Physiol. Plant Mol. Biol., 49, pp. 427-451 
504 |a Comin, M.J., Maier, M.S., Roccatagliata, A.J., Pujol, C.A., Damonte, E.B., Evaluation of the antiviral activity of natural sulfated polyhydroxysteroids and their synthetic derivatives and analogs (1999) Steroids, 64, pp. 335-340 
504 |a Damonte, E.B., Coto, C.E., Treatment of arenavirus infections: From basic studies to the challege of antiviral therapy (2002) Adv. Virus Res., 58, pp. 125-155 
504 |a Ellenberg, P., Edreira, M., Lozano, M., Scolaro, L., Synthesis and expression of viral antigens in Vero cells persistently infected with Junin virus (2002) Arch. Virol., 147, pp. 1543-1557 
504 |a Enria, D.A., Maiztegui, J.I., Antiviral treatment of Argentine hemorrhagic fever (1994) Antivir. Res., 23, pp. 23-31 
504 |a Kamuro, Y., Takatsuto, S., Practical application of brassinosteroids in agricultural fields (1999) Brassinosteroids Steroidal Plant Hormones, pp. 223-241. , A. Sakurai T. Yokota S.D. Clouse Springer-Verlag Tokyo 
504 |a Kohen, F.F., Gunasekera, M., Cross, S.S., New antiviral sterol disulfate ortho esters from the marine sponge Petrosia weinbergi (1991) J. Org. Chem., 56, pp. 1322-1325 
504 |a Laemmli, U.K., Cleavage of structural proteins during the assembly of the head bacteriophage T4 (1970) Nature, 227, pp. 680-685 
504 |a Lozano, M.E., Posik, D.M., Albariño, C.G., Schujman, G., Ghiringhelli, P.D., Calderón, G., Sabattini, M., Romanowski, V., Characterization of arenavirus using a family-specific primer set for RT-PCR amplification and RFLP analysis. Its potential use for detection of uncharacterized arenaviruses (1997) Virus Res., 49, pp. 79-89 
504 |a McCormick, J.B., King, I.J., Webb, P.A., Scribner, C.L., Craven, R.B., Johnson, K.M., Elliot, L.H., Belmont-Williams, R., Lassa fever. Effective therapy with ribavirin (1986) N. Engl. J. Med., 314, pp. 20-26 
504 |a McKee Jr., K.T., Huggins, J.W., Trahan, C.J., Mahlandt, B.G., Ribavirin prophylaxis and therapy for experimental Argentine hemorrhagic fever (1988) Antimicrob. Agents Chemother., 32, pp. 1304-1309 
504 |a Meyer, B.J., De La Torre, J.C., Southern, P.J., Arenaviruses: Genomic RNAs transcription and replication (2002) Arenaviruses I, pp. 139-158. , M.B.A. Oldstone Springer-Verlag New York 
504 |a Peters, C.J., Human infection with arenaviruses in the Americas (2002) Arenaviruses I, pp. 65-74. , M.B.A. Oldstone Springer-Verlag New York 
504 |a Romanowski, V., Genetic organization of Junin virus, the etiological agent of Argentine hemorrhagic fever (1993) The Arenaviridae, pp. 51-84. , M.S. Salvato Plenum Press New York 
504 |a Talarico, L.B., Ramírez, J.A., Galagovsky, L.R., Wachsman, M.B., Structure-activity relationship studies in a set of new brassinosteroid derivatives assayed against herpes simplex virus type 1 and 2 in cell cultures (2002) Med. Chem. Res., 11, pp. 434-444 
504 |a Teme Centurión, O.M., Galagovsky, L.R., Alternative synthesis of 24 (S)-homoethylcastasterone from stigmasterol (1998) Anal. Assoc. Quim. Arg., 86, pp. 104-109 
504 |a Tortorici, M., Albariño, C., Posik, D.M., Ghiringhelli, P., Lozano, M., Rivera Pomar, R., Romanowski, V., Arenavirus nucleocapsid protein displays a transcriptional antitermination activity in vivo (2001) Virus Res., 73, pp. 41-55 
504 |a Wachsman, M.B., López, E.M.F., Ramírez, J.A., Galagovsky, L.R., Coto, C.E., Antiviral effect of brassinosteroids against herpes virus and arenaviruses (2000) Antivir. Chem. Chemother., 11, pp. 71-77 
504 |a Wachsman, M.B., Ramírez, J.A., Galagovsky, L.R., Coto, C.E., Antiviral activity of brassinosteroid derivatives against measles virus in cell cultures (2002) Antivir. Chem. Chemother., 13, pp. 61-66 
520 3 |a The antiviral mode of action of the synthetic brassinosteroid (22S,23S)-3β-bromo-5α,22,23-trihydroxystigmastan-6-one (6b) against Junin virus replication in Vero cells was investigated. Time-related experiments showed that 6b mainly affects an early event of virus growth cycle. Neither adsorption nor internalization of viral particles was the target of the inhibitory action. The analysis of the effect of 6b on viral RNA synthesis demonstrated that the presence of the compound adversely affects virus RNA replication by preventing the synthesis of full length antigenomic RNA. Although 6b was most effective the earlier it was added to the cells after infection with JV, a high level of inhibition of JV yield and fusion activity of newly synthesized viral glycoproteins was still detected when the compound was present during the last hours of infection. Therefore, we cannot rule out an inhibitory action of 6b on later events of JV replicative cycle. © 2005 Elsevier B.V. All rights reserved.  |l eng 
536 |a Detalles de la financiación: Universidad de Buenos Aires 
536 |a Detalles de la financiación: Umweltbundesamt, X 046 
536 |a Detalles de la financiación: National Research Council 
536 |a Detalles de la financiación: Consejo Nacional de Investigaciones Científicas y Técnicas, PIP 02236 
536 |a Detalles de la financiación: We thank Dr. L.R. Galagovsky and J.A. Ramírez for providing the compound 6b . This work was supported by grants from University of Buenos Aires, UBA, X 046, and National Research Council, CONICET, PIP 02236. Dr. Celia E. Coto is member of the Scientific Career of CONICET, Argentina. 
593 |a Laboratorio de Virología, Departamento de Química Biológica, Pabellón 2, 1428 Buenos Aires, Argentina 
690 1 0 |a ANTIVIRAL ACTIVITY 
690 1 0 |a ARENAVIRUS 
690 1 0 |a BRASSINOSTEROID 
690 1 0 |a HEMORRHAGIC FEVER VIRUS 
690 1 0 |a 3BETA BROMO 5ALPHA,22,23 TRIHYDROXYSTIGMASTAN 6 ONE 
690 1 0 |a BRASSINOSTEROID 
690 1 0 |a GENOMIC RNA 
690 1 0 |a UNCLASSIFIED DRUG 
690 1 0 |a VIRUS GLYCOPROTEIN 
690 1 0 |a ANIMAL CELL 
690 1 0 |a ANTIVIRAL ACTIVITY 
690 1 0 |a ARTICLE 
690 1 0 |a CONTROLLED STUDY 
690 1 0 |a DRUG MECHANISM 
690 1 0 |a DRUG SYNTHESIS 
690 1 0 |a JUNIN VIRUS 
690 1 0 |a NONHUMAN 
690 1 0 |a PRIORITY JOURNAL 
690 1 0 |a RNA SYNTHESIS 
690 1 0 |a VERO CELL 
690 1 0 |a VIROGENESIS 
690 1 0 |a VIRUS PARTICLE 
690 1 0 |a VIRUS REPLICATION 
690 1 0 |a ANIMALS 
690 1 0 |a ANTIVIRAL AGENTS 
690 1 0 |a CELL FUSION 
690 1 0 |a CELL LINE 
690 1 0 |a CERCOPITHECUS AETHIOPS 
690 1 0 |a CHOLESTANONES 
690 1 0 |a CRICETINAE 
690 1 0 |a DNA, COMPLEMENTARY 
690 1 0 |a GIANT CELLS 
690 1 0 |a IMMUNOPRECIPITATION 
690 1 0 |a JUNIN VIRUS 
690 1 0 |a REVERSE TRANSCRIPTASE POLYMERASE CHAIN REACTION 
690 1 0 |a RNA, VIRAL 
690 1 0 |a VERO CELLS 
690 1 0 |a VIRAL PROTEINS 
690 1 0 |a VIRUS REPLICATION 
690 1 0 |a ANIMALIA 
690 1 0 |a ARENAVIRUS 
690 1 0 |a JUNIN VIRUS 
650 1 7 |2 spines  |a VIRUS RNA 
700 1 |a Larzábal, M. 
700 1 |a Sgalippa, N.A. 
700 1 |a Wachsman, M.B. 
700 1 |a Coto, C.E. 
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