Journal of General (2015), 00, 1–3 DOI 10.1099/jgv.0.000286

Commentary 70th Anniversary Collection of the Society: Journal of General Virology Robin A. Weiss

Correspondence Division of Infection & Immunity, University College London, London WC1E 6BT, UK Robin A. Weiss [email protected]

To mark the 70th anniversary of the founding of the Society From its inception, the Journal of General Virology took for General Microbiology (now renamed the Microbiology papers on the structure and design of particles, Society) it was decided to showcase 70 salient publications such as human adenovirus type 5. In a superb biochemical from the archives of its various journals. The Journal of Gen- and structural analysis comprising three consecutive eral Virology was allocated 15 papers. I was invited to curate papers, the second paper by Russell et al. (1967) showed them and given a carte blanche which ones to choose. True that when heated to 56 8C, the icosahedral capsid ruptured to the name of the journal, I picked a broad range of at the penton bases and liberated viral DNA. They also cor- and a paper on prion disease. If readers are disappointed not rectly predicted that unknown nucleocore proteins exist to see their own most cherished contribution featured that in later years became important for understanding among them, please consider the odds: only 15 from over cell transformation and early steps in virus replication. 15 000 Journal of General Virology articles could be selected The only paper among the 15 selected that does not present and I gave more weight to older papers to recall contri- primary research data is the commentary on virus diversity butions by the pioneers of virology. byPeterWildy(Wildy,1973),thefirstCo-editoroftheJournal The Journal of General Virology began in 1967, the year in of General Virology (with Colin Kaplan) and later Society which I published my first virological paper (sorry, it for General Microbiology President. This paper discusses wasn’t in this journal). Papers on novel techniques tend what was known of viral replication strategies as well as to have higher citations, as do reviews. I omitted reviews novel plant pathogens with ‘naked’ RNA called viroids. but included some methodological articles. Citation factors It is not clear which conference Wildy was addressing but are vexatious as it takes time for them to accumulate and in it may well have been the Society for General Microbiology earlier years there was a smaller population of virologists to Spring Meeting. I am intrigued that Wildy cited a CIBA cite each others’ work. ‘Orphan’ virus groups, such as Foundation Workshop summary by John Subak-Sharpe insect viruses, though equally important scientifically, rather than David Baltimore’s paper (Baltimore, 1971) clas- receive fewer citations than those of medical significance. sifying viruses by mode of replication, possessing DNA or RNA genomes, single- or double-stranded, positive or nega- Two remarkable papers published in 1977 top the Journal tive with respect to mRNA and having a segmented or non- of General Virology’s citations and report innovative techni- segmented genome. I still use Baltimore’s classic paper for cal advances. With over 2000 citations, Clark & Adams teaching and Wildy’s commentary contains similar insights. (1977) described an early application of an ELISA for screening diverse plant viruses. Although the term would The elusive nature of the agents causing transmissible not be coined for another 20 years, one could regard this spongiform encephalitis (TSE) had to await the identifi- study as utilizing micro-arrays. cation of host-encoded prion proteins and their conversion into transmissible forms. In the 1950s, the brilliant Iceland- Weighing in at over 2500 citations is the paper by Graham ic pathologist Bjo¨rn Sigurdsson discovered the agents of et al. (1977) on transformation of HEK (human embryonic two distinct slow-incubation diseases of sheep: scrapie kidney) cells by adenovirus type 5 DNA precipitated onto (the prototype TSE) and maedi-visna virus (the prototype the cell monolayer with calcium phosphate to establish 293 lentivirus). To mark TSE, I chose Kimberlin & Walker’s cells. Further immortalization with the SV40 T antigen gene paper (Kimberlin & Walker, 1978) on strain specificity of established the clonal 293T cell line still in widespread use scrapie passaged in hamsters because the heritability of today. Graham & van der Eb (1973) had previously trans- differences in incubation period and pathology remains formed rat cells with adenovirus type 5, but this report rep- one of the chief puzzles about the prion hypothesis. resents the first successful DNA transfection of human cells. Of course, the original gene transfer experiment was carried The tragic epidemic of Ebola disease in West Africa is a out in 1928 by Fred Griffiths, who converted smooth pneu- reminder of the power of viruses to wreak havoc to mococcus into a rough capsule form, and which eventually health and to economies. The Journal of General Virology led to the identification of DNA as the hereditary material. published the first thorough analysis of Ebola virus

000286 G 2015 The Authors Printed in Great Britain 1 Commentary proteins (Kiley et al., 1980) not long after the isolation of combined antiretroviral treatment with three or more the virus in 1976. This study led to more sensitive and drugs has converted HIV infection from a death sentence specific diagnostic tests and a better distinction between into a manageable chronic condition. Who would have pre- Ebola and Marburg filoviruses. dicted in 1994 that 50 % of ,37 million HIV-infected people worldwide now have access to anti-retrovirals? In the 1980s, molecular virology flourished with the wide- spread adoption of recombinant DNA technology and Gene therapy can be delivered by vectors derived from sev- DNA sequencing by Fred Sanger’s dideoxynucleotide eral types of virus. I selected the paper by Blanchard et al. chain-termination method. One could choose many (1998) on the advantages of modified vaccinia Ankara important papers in the journal and I selected the sequence (MVA) as an IFN-inducing vaccine that is expressed but of varicella-zoster virus by Davison & Scott (1986). Now replicates poorly in human cells. Blanchard et al. (1998) that we can ‘deep’ sequence viral quasispecies directly also foresaw that MVA could be exploited as a vector for from pathology specimens, it is easy to forget that sequen- genes encoding immunogens of viral, bacterial and eukary- cing and mapping a complete herpesvirus genome was a otic pathogens. MVA is a modern version of the cowpox/ major event at that time. horsepox strains used by Edward Jenner to protect against smallpox. Readers who have had papers rejected by the The 1990s brought us PCR amplification of viral genetic Journal of General Virology or other journals might sequences. The Journal of General Virology’s most cited empathise with Jenner whose 1796 paper was declined fol- paper in the 1990s was from Pete Simmonds and colleagues lowing peer review (Weiss & Esparza, 2015)! (Simmonds et al., 1993) who defined genotypes and sub- types of hepatitis C virus (HCV) and a similar paper by The eradication of smallpox is arguably the greatest success Okamoto et al. (1992) was a close runner up. Using reverse in the history of virology. Despite the decision of the World transcription PCR to amplify the NS-5 gene, Simmonds Health Organization in 1996 on the 200th anniversary of et al. (1993) classified seven genotypes from different geo- Jenner’s breakthrough to destroy all existing laboratory graphical regions showing that HCV is as genetically stocks of variola (smallpox) virus, this action has not yet diverse as human immunodeficiency virus (HIV) and been undertaken and the majority of pox virologists con- they suggested a useful nomenclature. Given that HCV sider that there are more pros than cons to keeping variola had been first characterized only 4 years previously and under appropriate security for research, as shown by Olsen PCR technology was equally young, this was a major con- et al. (2009). However, to represent vaccine research I have tribution to a newly discovered virus causing a well-known chosen a pioneering paper on the attenuation of Marek’s disease which formerly had the negative sobriquet of non- disease virus in chickens (Churchill et al., 1969) that led A, non-B infectious hepatitis. to the first tumour virus vaccine. Editors of the Journal of General Virology have not only Viruses have been great tools for probing the inner workings been diligent in the editing process, but have also published of host cells, from studies of lytic and lysogenic bacterio- some of their best papers in the journal. One sadly missed phage to the discovery of RNA silencing of viruses and of editor, Richard Elliott, was a world leader on the family micro RNAs in plants. Oncogenic viruses have taught us Bunyaviridae (Brennan et al., 2015). His paper on reverse much about cancer, including the discovery of oncogenes genetics of Schmallenberg virus (Elliott et al., 2013) exem- and the identification of p53 protein through its interaction plifies innovative virology combined with excellent scien- with polyoma and papilloma viruses. The elegant paper by tific exposition as the hallmark of the Journal of General Vousden et al. (1993) used a p53-negative Burkitt’s lym- Virology’s papers. phoma cell line to characterize which mutants of p53 were linked to changed tumour suppressor properties and To complete my collection, I selected the two papers that bound the E6 protein of human papilloma virus type 16. have most influenced my own research, discussed in my recent Lecture (Weiss, 2015). The Compared with antibiotics, antiviral drug therapy and resist- first is the genetic analysis by Payne & Chubb (1968) of ance is a young discipline. The Journal of General a host antigen related to the core protein (Gag) of avian Virology has featured several papers from pioneering studies leukosis viruses (ALV). They showed that the presence of sensitivity and resistance of herpes simplex virus to acyclo- of this antigen in uninfected fowl is determined by a vir (Field et al., 1980) to current studies of influenza virus dominant allele of a host gene. This paper is an exemplary inhibitors (Xu et al., 2015). The paper by Kellam et al. study that started as an applied project to distinguish (1994) revealed the evolution of resistance of HIV-1 to between ALV infection and clean flocks expressing a zidovudine (azidothymidine), which was the first anti-ret- cross-reacting antigen, but which became an important roviral drug to be used clinically. Treated patients showed a building block for a fundamental discovery, i.e. endogen- dramatic drop in viral load soon followed by a rebound due ous retroviruses. to the emergence of resistant variants. This paper defined the complex stepwise introduction of mutations in reverse The second paper that set me on a new course was by Jan transcriptase leading to resistance and showed how geno- Za´vada (Za´vada, 1972) on pseudotypes of vesicular stomati- typic assays could replace phenotypic assays and be used tis virus (VSV) that functionally assemble retroviral glyco- in prognosis of resistance. Happily, the introduction of proteins. This technique provided a simple neutralization

2 Journal of General Virology 00 Commentary assay by VSV plaque reduction and also a means of identify- Payne, L. N. & Chubb, R. C. (1968). Studies on the nature and genetic ing virus receptors, e.g. CD4 for HIV (Weiss, 2015). With control of an antigen in normal chick embryos which reacts in the 3 the development of retrovirus and lentivirus vectors, reverse COFAL test. J Gen Virol , 379–391. pseudotypes bearing VSV G protein provided vectors with a Russell, W. C., Valentine, R. C. & Pereira, H. G. (1967). The effect of 1 broad host range and tissue tropism. Today’s recombinant heat on the anatomy of the adenovirus. J Gen Virol , 509–522. live vectors for immunization, such as the VSV vector for Simmonds, P., Holmes, E. C., Cha, T. A., Chan, S. W., McOmish, F., the Ebola vaccine (Henao-Restrepo et al., 2015), stem Irvine, B., Beall, E., Yap, P. L., Kolberg, J. & Urdea, M. S. (1993). ´ ´ Classification of hepatitis C virus into six major genotypes and a from Zavada’s innovation (Zavada, 1972). series of subtypes by phylogenetic analysis of the NS-5 region. J Gen Overall, the Journal of General Virology has published a Virol 74, 2391–2399. wide range of important and interesting discoveries and I Vousden, K. H., Crook, T. & Farrell, P. J. (1993). Biological activities of expect that the next 49 years will be equally fruitful. p53 mutants in Burkitt’s lymphoma cells. J Gen Virol 74, 803–810. I would have liked to feature superb papers from British Wildy, P. (1973). Unity and variety in virology. J Gen Virol 20 (Suppl), pioneers such as the plant virologists Bryan Harrison and 1–5. David Baulcombe, tumour virologists such as Lionel Craw- Za´ vada, J. (1972). Pseudotypes of vesicular stomatitis virus with the ford and Bill Jarrett, and Fred Brown on picornaviruses, coat of murine leukaemia and of avian myeloblastosis viruses. J Gen 15 but difficult choices had to be made. Virol , 183–191.

Further reading Acknowledgement Baltimore, D. (1971). Expression of animal virus genomes. Bacteriol Rev 35, 235–241. I thank Stacey Efstathiou for helpful suggestions. Brennan, B., Weber, F., Kormelink, R., Schnettler, E., Bouloy, M., Failloux, A.-B., Weaver, S. C., Fazakerley, J. K., Fragkoudis, R. & Highlighted articles other authors (2015). In memoriam – Richard M. Elliott (1954–2015). JGenVirol96, 1975–1978. Blanchard, T. J., Alcamı´, A., Andrea, P. & Smith, G. L. (1998). Field, H. J., Darby, G. & Wildy, P. (1980). Isolation and characterization Modified vaccinia virus Ankara undergoes limited replication in of acyclovir-resistant mutants of herpes simplex virus. J Gen Virol 49, human cells and lacks several immunomodulatory proteins: 115–124. 79 implications for use as a human vaccine. J Gen Virol , 1159–1167. Graham, F. L. & van der Eb, A. J. (1973). Transformation of rat cells by Churchill, A. E., Chubb, R. C. & Baxendale, W. (1969). The attenuation, DNA of human adenovirus 5. Virology 54, 536–539. with loss of oncogenicity, of the herpes-type virus of Marek’s disease Henao-Restrepo, A. M., Longini, I. M., Egger, M., Dean, N. E., 4 (strain HPRS-16) on passage in cell culture. JGenVirol ,557–564. Edmunds, W. J., Camacho, A., Carroll, M. W., Doumbia, M., Clark, M. F. & Adams, A. N. (1977). Characteristics of the microplate Draguez, B. & other authors (2015). Efficacy and effectiveness of method of enzyme-linked immunosorbent assay for the detection of an rVSV-vectored vaccine expressing Ebola surface glycoprotein: plant viruses. J Gen Virol 34, 475–483. interim results from the Guinea ring vaccination cluster- Davison, A. J. & Scott, J. E. (1986). The complete DNA sequence of randomised trial. Lancet 386, 857–866. varicella-zoster virus. J Gen Virol 67, 1759–1816. Okamoto, H., Sugiyama, Y., Okada, S., Kurai, K., Akahane, Y., Sugai, Elliott, R. M., Blakqori, G., van Knippenberg, I. C., Koudriakova, E., Li, Y., Tanaka, T., Sato, K., Tsuda, F. & other authors (1992). Typing P., McLees, A., Shi, X. & Szemiel, A. M. (2013). Establishment of a hepatitis C virus by polymerase chain reaction with type-specific reverse genetics system for Schmallenberg virus, a newly emerged primers: application to clinical surveys and tracing infectious orthobunyavirus in Europe. J Gen Virol 94, 851–859. sources. J Gen Virol 73, 673–679. Graham, F. L., Smiley, J., Russell, W. C. & Nairn, R. (1977). Olson, V. A., Karem, K. L., Smith, S. K., Hughes, C. M., Damon, I. K. Characteristics of a human cell line transformed by DNA from (2009). Smallpox virus plaque phenotypes: genetic, geographical and human adenovirus type 5. J Gen Virol 36, 59–72. case fatality relationships. J Gen Virol 90, 792–798. Kellam, P., Boucher, C. A. B., Tijnagel, J. M. G. H. & Larder, B. A. Weiss, R. A. (2015). What’s the host and what’s the microbe? (1994). Zidovudine treatment results in the selection of human The Marjory Stephenson Prize Lecture 2015. J Gen Virol 96, 2501–2510. immunodeficiency virus type 1 variants whose genotypes confer Weiss, R. A. & Esparza, J. (2015). The prevention and eradication 75 increasing levels of drug resistance. J Gen Virol , 341–351. of smallpox. A commentary on Sloane (1755) ‘An account of Kiley, M. P., Regnery, R. L. & Johnson, K. M. (1980). Ebola virus: inoculation’. Phil Trans Roy Soc B 370, 20140378. 49 identification of virion structural proteins. J Gen Virol , 333–341. Xu, L., Bao, L., Li, F., Gu, S., Lv, Q., Yuan, J., Xu, Y., Zhu, H., Deng, W. & Kimberlin, R. H. & Walker, C. A. (1978). Evidence that the transmission other authors ‘(2015). Combinations of oseltamivir and fibrates of one source of scrapie agent to hamsters involves separation of agent prolong the mean survival time of mice infected with the lethal strains from a mixture. J Gen Virol 39, 487–496. H7N9 influenza virus. J Gen Virol 96, 46–51.

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