Abstract:
:Drug susceptibility and mutations in the reverse transcriptase (RT) gene were analyzed with 167 virus isolates from 38 patients treated with nevirapine, a potent nonnucleoside inhibitor of human immunodeficiency virus type 1 (HIV-1) RT. Resistant isolates emerged quickly and uniformly in all patients administered nevirapine either as monotherapy or in combination with zidovudine (AZT). Resistance developed as early as 1 week, indicating rapid turnover of the virus population. The development of resistance was associated with the loss of antiviral drug activity as measured by CD4 lymphocyte counts and levels of HIV p24 antigen and RNA in serum. In addition to mutations at amino acid residues 103, 106, and 181 that had been identified by selection in cell culture, mutations at residues 108, 188, and 190 were also found in the patient isolates. Sequences from patient clones documented cocirculating mixtures of populations of different mutants. The most common mutation with monotherapy, tyrosine to cysteine at residue 181, was prevented from emerging by coadministration of AZT, which resulted in the selection of alternative mutations. The observations documented that, under selective drug pressure, the circulating virus population can change rapidly, and many alternative mutants can emerge, often in complex mixtures. The addition of a second RT inhibitor, AZT, significantly altered the pattern of mutations in the circulating population of HIV.
journal_name
J Viroljournal_title
Journal of virologyauthors
Richman DD,Havlir D,Corbeil J,Looney D,Ignacio C,Spector SA,Sullivan J,Cheeseman S,Barringer K,Pauletti Ddoi
10.1128/JVI.68.3.1660-1666.1994subject
Has Abstract,Author List Incompletepub_date
1994-03-01 00:00:00pages
1660-6issue
3eissn
0022-538Xissn
1098-5514journal_volume
68pub_type
杂志文章abstract::Extrachromosomal DNA was isolated from tissue culture cells that were acutely infected with simian sarcoma virus (SSV) and its associated helper (simian sarcoma-associated virus [SSAV]). Two sizes of closed circular viral genomic DNA intermediates were isolated, cleaved at the single EcoRI site, and ligated to the Cha...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.41.2.593-604.1982
更新日期:1982-02-01 00:00:00
abstract::Poliovirus replicase- and host factor-catalyzed copying of 3'-terminal polyadenylic acid [poly(A)] of poliovirion RNA was studied. Host factor-stimulated synthesis of polyuridylic acid [poly(U)] by the replicase required ATP in addition to UTP. ATP was not required for the oligouridylic acid-primed copying of 3'-termi...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.50.2.515-523.1984
更新日期:1984-05-01 00:00:00
abstract::Adult T-cell leukemia (ATL) is caused by human T-cell leukemia virus type 1 (HTLV-1). Elevated expression of vascular endothelial growth factor (VEGF) in ATL patients is associated with leukemic cell invasion and infiltration in different organs. The regulatory protein Tax 1 encoded by HTLV-1 plays a pivotal role in T...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.02166-09
更新日期:2010-05-01 00:00:00
abstract::The simian virus 40 (SV40) core origin of replication consists of three functional domains. The sequence 5'-CACTACTTCTGGAATAG-3' with an imperfect inverted repeat (underlined), a palindrome with four 5'-GAGGC-3' pentanucleotide repeats, and a 17-base-pair A + T-rich segment. We have been able to assign primary functio...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.64.2.509-518.1990
更新日期:1990-02-01 00:00:00
abstract::Axl, a plasma membrane-associated Tyro3/Axl/Mer (TAM) family member, is necessary for optimal Zaire ebolavirus (ZEBOV) glycoprotein (GP)-dependent entry into some permissive cells but not others. To date, the role of Axl in virion entry is unknown. The focus of this study was to characterize entry pathways that are us...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.01278-09
更新日期:2011-01-01 00:00:00
abstract::The fate of polyomavirus genomes in stable transformants was examined in experiments in which rat or hamster cells were infected with mixed viral populations containing either two distinguishable wild types or a wild type plus a transformation-deficient mutant. The results demonstrate that in 90% of the cases in eithe...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.64.3.1304-1313.1990
更新日期:1990-03-01 00:00:00
abstract::Papillomaviruses (PVs) are a large family of small DNA viruses infecting mammals, reptiles, and birds. PV infection induces cell proliferation that may lead to the formation of orogenital or skin tumors. PV-induced cell proliferation has been related mainly to the expression of two small oncoproteins, E6 and E7. In ma...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.01777-08
更新日期:2009-09-01 00:00:00
abstract::Two types of empty capsid particles that differed with respect to the presence of the two outer shell proteins were isolated from MA-104 cells infected with bovine rotavirus V1005. Three previously uncharacterized polypeptides, I, II, and III, migrating between VP2 and VP6, were detected in empty capsids but not in si...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.64.8.3635-3642.1990
更新日期:1990-08-01 00:00:00
abstract::The hepatitis C virus (HCV) core gene is more conserved at the nucleic acid level than is necessary to preserve the sequence of the core protein, suggesting that it contains information for additional functions. We used a battery of anticore antibodies to test the hypothesis that the core gene directs the synthesis of...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.01679-08
更新日期:2009-04-01 00:00:00
abstract::A protein-protein interaction within the helicase domain of the Tobacco mosaic virus (TMV) 126- and 183-kDa replicase proteins was previously implicated in virus replication (S. Goregaoker, D. Lewandowski, and J. Culver, Virology 282:320-328, 2001). To further characterize the interaction, polypeptides covering the in...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/jvi.77.6.3549-3556.2003
更新日期:2003-03-01 00:00:00
abstract::We have previously shown that two inhibitors specific for cellular cyclin-dependent kinases (cdks), Roscovitine (Rosco) and Olomoucine (Olo), block the replication of herpes simplex virus (HSV). Based on these results, we demonstrated that HSV replication requires cellular cdks that are sensitive to these drugs (L. M....
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/jvi.74.5.2107-2120.2000
更新日期:2000-03-01 00:00:00
abstract::Major histocompatibility complex E (MHC-E) is a highly conserved nonclassical MHC-Ib molecule that tightly binds peptides derived from leader sequences of classical MHC-Ia molecules for presentation to natural killer cells. However, MHC-E also binds diverse foreign and neoplastic self-peptide antigens for presentation...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.00592-19
更新日期:2019-09-12 00:00:00
abstract::Japanese encephalitis virus (JEV) is a mosquito-borne flavivirus and one of the most common agents of viral encephalitis. The infectious entry process of JEV into host cells remains largely unknown. Here, we present a systemic study concerning the cellular entry mechanism of JEV to B104 rat neuroblastoma cells. It was...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.00903-12
更新日期:2012-12-01 00:00:00
abstract::Numerous deaths of koi and common carp (Cyprinus carpio) were observed on many farms throughout Israel, resulting in severe financial losses. The lethal viral disease observed is highly contagious and extremely virulent, but morbidity and mortality are restricted to koi and common carp populations. Diseased fish exhib...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.79.4.1983-1991.2005
更新日期:2005-02-01 00:00:00
abstract::All positive-strand RNA viruses reorganize host intracellular membranes to assemble their replication complexes. Similarly, brome mosaic virus (BMV) induces two alternate forms of membrane-bound RNA replication complexes: vesicular spherules and stacks of appressed double-membrane layers. The mechanisms by which these...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.06701-11
更新日期:2012-05-01 00:00:00
abstract::NSP5 (NS26), the product of rotavirus gene 11, is a phosphoprotein whose role in the virus replication cycle is unknown. To gain further insight into its function, we obtained monoclonal antibodies against the baculovirus-expressed protein. By immunoprecipitation and immunoblotting experiments, we showed that (i) NSP5...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.71.1.34-41.1997
更新日期:1997-01-01 00:00:00
abstract::Leishmania RNA virus (LRV) is a double-stranded RNA virus that infects some strains of the protozoan parasite leishmania As with other totiviruses, LRV presumably expresses its polymerase by a ribosomal frameshift, resulting in a capsid-polymerase fusion protein. We have demonstrated previously that an LRV capsid-poly...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/jvi.77.19.10448-10455.2003
更新日期:2003-10-01 00:00:00
abstract::The functions of delta antigens (HDAgs) in the morphogenesis of hepatitis delta virus (HDV) have been studied previously. The C terminus of large HDAg has been shown to complex with the small surface antigen (HBsAg) of helper hepatitis B virus, whereas the assembly of small HDAg requires interaction with the N terminu...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.69.4.2508-2514.1995
更新日期:1995-04-01 00:00:00
abstract::Viral DNA sequences were not detected in high-molecular-weight host DNA until well after the onset of viral DNA replication. ...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.30.1.397-399.1979
更新日期:1979-04-01 00:00:00
abstract::Herpesviruses encode a set of core proteins essential for lytic replication of their genomes. Three of these proteins form a tripartite helix-primase complex that, in the case of Epstein-Barr virus (EBV), consists of the helicase BBLF4, the primase BSLF1, and the linker protein BBLF2/3. BBLF2/3 and its homologs in the...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.79.1.245-256.2005
更新日期:2005-01-01 00:00:00
abstract::Binding of human immunodeficiency virus type 1 (HIV-1) to CD4 receptors induces multiple cellular signaling pathways, including the MEK/ERK cascade. While the interaction of X4 HIV-1 with CXCR4 does not seem to activate this pathway, viruses using CCR5 for entry efficiently activate MEK/ERK kinases (W. Popik, J. E. He...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/jvi.74.6.2558-2566.2000
更新日期:2000-03-01 00:00:00
abstract::In cytomegalovirus-infected cells, the rate of protein synthesis was detected as two peaks. One occurred during the early phase of infection, 0 to 36 h postinfection, and the other occurred during the late phase, after the initiation of viral DNA synthesis. Double-isotopic-label difference analysis demonstrated that h...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.23.3.751-767.1977
更新日期:1977-09-01 00:00:00
abstract::Transient transfection assays indicated that A2L is one of three vaccinia virus intermediate genes that are required for the transcriptional transactivation of viral late genes. We have expressed the A2L open reading frame in Escherichia coli and shown by blotting experiments that the 26-kDa protein binds zinc, a prop...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.67.10.5749-5753.1993
更新日期:1993-10-01 00:00:00
abstract::In this study, we document that efficient interaction between arenavirus nucleoprotein (NP) and RNA-dependent RNA polymerase (L protein), the two trans-acting viral factors required for both virus RNA replication and gene transcription, requires the presence of virus-specific RNA sequences located within the untransla...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.00103-15
更新日期:2015-05-01 00:00:00
abstract::Protective immunity to rotavirus (RV) is primarily mediated by antibodies produced by RV-specific memory B cells (RV-mBc). Of note, most of these cells express IgM, but the function of this subset is poorly understood. Here, using limiting dilution assays of highly sort-purified human IgM(+) mBc, we found that 62% and...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.01466-12
更新日期:2012-10-01 00:00:00
abstract::Expression of human papillomavirus late genes encoding L1 and L2 capsid proteins is restricted to terminally differentiated epithelial cells. We have previously identified and characterized an AU-rich, cis-acting negative regulatory element in the 3' untranslated region of human papillomavirus type 1 late mRNAs. This ...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.70.6.3659-3667.1996
更新日期:1996-06-01 00:00:00
abstract::The expression of a human immunodeficiency virus (HIV) type 1 provirus (F12-HIV) cloned from a nonproducer, chronically infected CD4 down-regulated Hut-78 cell clone (F12) does not lead to the formation of viral particles and, upon transfection in HeLa CD4+ cells, confers resistance to HIV superinfection without affec...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.69.11.6618-6626.1995
更新日期:1995-11-01 00:00:00
abstract::Two species of basic internal proteins were found in osmotic shock supernatant solutions of bacteriophages T4B, T4D, T2H, T2L, and T6. The major species of protein isolated had a molecular weight of approximately 21,000 daltons, whereas the minor protein molecular weight was near 9,500 daltons. The two protein species...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.6.4.445-454.1970
更新日期:1970-10-01 00:00:00
abstract::Phage 2 adsorbed to Pseudomonas aeruginosa strain BI in 5 mM Tris buffer, providing that cations like Na(+), Mg(2+), or Ca(2+) were present. Adsorption was observed over a broad pH range, reaching a maximum level around pH 7.5, which coincided with the pH required for maximal activity of the phage 2-associated slime p...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.13.1.22-27.1974
更新日期:1974-01-01 00:00:00
abstract::Longitudinal studies of T cell immune responses during viral infections in humans are essential for our understanding of how effector T cell responses develop, clear infection, and provide long-lasting immunity. Here, following an outbreak of a Puumala hantavirus infection in the human population, we longitudinally an...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.05548-11
更新日期:2011-10-01 00:00:00