Summary
Junin virus (JV) infected Vero cells were used to investigate virus capacity to induce cell-cell fusion. Polykaryocyte formation due to JV was found to be pH and temperature-dependent. A reduced fusion activity was detected on BHK-21 cells. Different JV-strains exhibited a similar extent and pH dependence of their fusion activity. Neutralizing antibodies against the main viral glycoprotein (GP38) inhibited syncytium production and GP38 conformational changes in response to acid treatment were detected by an immunoprecipitation assay.
Keywords: Infectious Disease, Conformational Change, Acid Treatment, Vero Cell, Similar Extent
References
- 1.Bron R, Wahlberg JM, Garoff H, Wilschut J. Membrane fusion of Semliki Forest virus in a model system: correlation between fusion kinetics and structural changes in the envelope glycoprotein. EMBO J. 1983;12:693–701. doi: 10.1002/j.1460-2075.1993.tb05703.x. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 2.Candurra NA, Damonte EB, Coto CE. Antigenic relationships between attenuated and pathogenic strains of Junin virus. J Med Virol. 1989;27:145–150. doi: 10.1002/jmv.1890270215. [DOI] [PubMed] [Google Scholar]
- 3.Candurra NA, Scolaro LA, Mersich SE, Damonte EB, Coto CE. A comparison of Junin virus strains: growth characteristics, cytopathogenicity and viral polypeptides. Res Virol. 1990;141:505–515. doi: 10.1016/0923-2516(90)90083-u. [DOI] [PubMed] [Google Scholar]
- 4.Castilla V, Mersich SE, Candurra NA, Damonte EB. The entry of Junin virus into Vero cells. Arch Virol. 1994;136:363–374. doi: 10.1007/BF01321064. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 5.Creighton TE. Protein folding. Biochem J. 1990;270:1–16. doi: 10.1042/bj2700001. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 6.Di Simone C, Zandonatti MA, Buchmeier MJ. Acidic pH triggers LCMV membrane fusion activity and conformational change in the glycoprotein spike. Virology. 1994;198:455–465. doi: 10.1006/viro.1994.1057. [DOI] [PubMed] [Google Scholar]
- 7.Di Simone C, Buchmeier MJ. Kinetics and pH dependence of acid-induced structural changes in the lymphocytic choriomeningitis virus glycoprotein complex. Virology. 1995;109:3–9. doi: 10.1006/viro.1995.1225. [DOI] [PubMed] [Google Scholar]
- 8.Doms RW, Helenius A, White J. Membrane fusion activity of the influenza virus hemagglutinin. J Biol Chem. 1985;260:2973–2981. [PubMed] [Google Scholar]
- 9.Edwards J, Brown DT. Sindbis virus induced fusion of tissue cultured aedes albopictus (mosquito) cells. Virus Res. 1984;1:705–711. [Google Scholar]
- 10.Edwards J, Brown DT. Sindbis virus-mediated cell fusion from without is a two-step event. J Gen Virol. 1986;67:377–380. doi: 10.1099/0022-1317-67-2-377. [DOI] [PubMed] [Google Scholar]
- 11.Fredericksen BL, Whitt MA. Vesicular stomatitis virus glycoprotein mutations that affect membrane fusion activity and abolish virus infectivity. J Virol. 1995;69:1435–1443. doi: 10.1128/jvi.69.3.1435-1443.1995. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 12.Gaudin Y, Ruigrok RWH, Knossow M, Flamand A. Low-pH conformational changes of rabies virus glycoprotein and their role in membrane fusion. J Virol. 1993;67:1365–1372. doi: 10.1128/jvi.67.3.1365-1372.1993. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 13.Glushakova SE, Omelyanenko VG, Lukashevitch IS, Bodganov AA, Jr, Moshnikova AB, Kozytch AT, Torchilin VP. The fusion of artificial lipid membranes induced by the synthetic arenavirus fusion peptide. Biochim Biophys Acta. 1992;1110:202–208. doi: 10.1016/0005-2736(92)90360-x. [DOI] [PubMed] [Google Scholar]
- 14.Guirakhoo F, Heinz FX, Kunz C. Epitope model of tick-borne encephalitis virus envelope glycoprotein E: analysis of structural properties role of carbohydrate side chain and conformational changes occurring at acidic pH. Virology. 1989;169:90–99. doi: 10.1016/0042-6822(89)90044-5. [DOI] [PubMed] [Google Scholar]
- 15.Hoekstra D, Klappe K, Hoff H, Nir S. Mechanism of fusion of Sendai virus: role of hydrophobic interaction and mobility constraints of viral membrane proteins. Effects of polyethyleneglycol. J Biol Chem. 1989;264:6786–6792. [PubMed] [Google Scholar]
- 16.Kempf C, Michel MR, Kohler U, Koblet H. A novel method for the detection of early events in cell-cell fusion of Semliki forest virus infected cells growing in monolayer cultures. Arch Virol. 1987;95:283–289. doi: 10.1007/BF01310786. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 17.Ly Cavanagh D. Coronavirus IBV-induced membrane fusion occurs at a near neutral pH. Arch Virol. 1992;122:307–316. doi: 10.1007/BF01317192. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 18.Marsh M, Helenius A. Virus entry into animal cells. Adv Virus Res. 1989;36:107–151. doi: 10.1016/S0065-3527(08)60583-7. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 19.Mersich SE, Castilla V, Damonte EB. Lectin affinity of Junin virus glycoproteins. Ann Inst Pasteur Virol. 1988;139:277–284. doi: 10.1016/s0769-2617(88)80040-6. [DOI] [PubMed] [Google Scholar]
- 20.Pak CC, Krumbiegel M, Blumenthal R. Intermediates in influenza virus PR/8 haemagglutinin-induced membrane fusion. J Gen Virol. 1994;75:395–399. doi: 10.1099/0022-1317-75-2-395. [DOI] [PubMed] [Google Scholar]
- 21.Payne HR, Storz J. Analysis of cell fusion by bovine coronavirus infection. Arch Virol. 1988;103:27–33. doi: 10.1007/BF01319806. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 22.Romanowski V. Genetic organization of Junin virus, the etiological agent of argentine hemorrhagic fever. In: Salvato MS, editor. The arenaviridae. New York: Plenum Press; 1993. pp. 51–83. [Google Scholar]
- 23.Sanchez A, Pifat DY, Kenyon RH, Peters CJ, MC Cormick JB, Kiley MP. Junin virus monoclonal antibodies: characterization and cross-reactivity with other arenaviruses. J Gen Virol. 1989;70:1125–1132. doi: 10.1099/0022-1317-70-5-1125. [DOI] [PubMed] [Google Scholar]
- 24.Scolaro LA, Mersich SE, Damonte EB. A mouse attenuated mutant of Junin virus with an altered envelope glycoprotein. Arch Virol. 1990;111:257–262. doi: 10.1007/BF01311059. [DOI] [PubMed] [Google Scholar]
- 25.Stegmann T, Doms R, Helenius A. Protein-mediated membrane fusion. Annu Rev Biophys Biophys Chem. 1989;18:187–211. doi: 10.1146/annurev.bb.18.060189.001155. [DOI] [PubMed] [Google Scholar]
- 26.Wahlberg JM, Garoff H. Membrane fusion process of Semliki Forest virus: low pH-induced rearrangement in spike protein quaternary structure precedes virus penetration into cells. J Cell Biol. 1992;116:339–348. doi: 10.1083/jcb.116.2.339. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 27.White J, Wilson IA. Antipeptides antibodies detect steps in a protein conformational change: low pH activation of the influenza virus hemagglutinin. J Cell Biol. 1987;105:2887–2897. doi: 10.1083/jcb.105.6.2887. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 28.White JM. Viral and cellular membrane fusion proteins. Annu Rev Physiol. 1990;52:675–697. doi: 10.1146/annurev.ph.52.030190.003331. [DOI] [PubMed] [Google Scholar]
- 29.White JM. Membrane fusion. Science. 1992;258:917–924. doi: 10.1126/science.1439803. [DOI] [PubMed] [Google Scholar]