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Articles 481 - 493 of 493
Full-Text Articles in Virology
Activation Of The Human Immunodeficiency Virus By Herpes Simplex Virus Type 1, Jeffrey M. Ostrove, John Leonard, Karen E. Weck, Arnold B. Rabson, Howard Gendelman
Activation Of The Human Immunodeficiency Virus By Herpes Simplex Virus Type 1, Jeffrey M. Ostrove, John Leonard, Karen E. Weck, Arnold B. Rabson, Howard Gendelman
Nebraska Center for Virology: Faculty Publications
Herpes simplex virus type 1 (HSV-1) and some of its immediate-early genes stimulate expression of the human immunodeficiency virus (HIV) long terminal repeat (LTR) sequences and the replication of HIV itself. To demonstrate this, the HIV LTR was linked to the indicator gene chloramphenicol acetyltransferase (CAT) and transfected into Vero cells with or without the trans-activating gene (tat) of HIV. Infection of these cells with HSV-1 strain KOS or temperature-sensitive mutant tsB2l or tsE6 resulted in a large increase in CAT activity in the absence of tat and further augmentation in the presence of tat. This stimulation was seen at …
Nucleotdie Sequence Of An Anti-Fluorescyl Hapten Antibody Heavy Chain Variable Region Gene From A Balb/C Mouse Hybridoma Cell Line, Zhen-Qian Liu, Charles Wood, Tai Te Wu
Nucleotdie Sequence Of An Anti-Fluorescyl Hapten Antibody Heavy Chain Variable Region Gene From A Balb/C Mouse Hybridoma Cell Line, Zhen-Qian Liu, Charles Wood, Tai Te Wu
Nebraska Center for Virology: Faculty Publications
We report here the nucleotide sequence of an anti-fluorescyl hapten antibody heavy chain variable region gene from a BALB/c mouse hybridoma cell line 3-13 (1). This gene segment was contained in a 5.0 kb EcoRI fragment isolated by a 700 bp probe 3' to the mouse heavy chain joining minigene region between the XbaI and EcoRI sites. Mature protein starts at *. The first 21 amino acid residues have also been confirmed by direct amino acid sequencing and they are identical to those of immunoglobulin MOPC104E heavy chain (2). Complementarity determining regions (CDRs) are underlined. The third CDR is unusually …
Productive, Persistent Infection Of Human Colorectal Cell Lines With Human Immunodeficiency Virus, Akio Adachi, Scott Koenig, Howard Gendelman, Daryl Daugherty, Sebastiano Gattoni-Celli, Anthony Fauci, Malcom A. Martin
Productive, Persistent Infection Of Human Colorectal Cell Lines With Human Immunodeficiency Virus, Akio Adachi, Scott Koenig, Howard Gendelman, Daryl Daugherty, Sebastiano Gattoni-Celli, Anthony Fauci, Malcom A. Martin
Nebraska Center for Virology: Faculty Publications
Thirteen adherent human non-lymphocyte cell lines were tested for their susceptibility to infection by human immunodeficiency virus. Productive infection could be demonstrated in three of five colorectal carcinoma cell lines examined; the other eight human non-lymphocyte cell lines were uninfectible. A susceptible colon carcinoma cell line (HT29), as well as normal colonic mucosa, was shown to contain a 3.0-kilobase species of poly(A)+ CD4 RNA, whereas uninfectible colon carcinoma and rhabdomyosarcoma cell lines synthesized no detectable T4 RNA. A persistently infected colon carcinoma cell line was established that continued to produce progeny human immunodeficiency virus for more than 10 weeks …
Production Of Acquired Immunodeficiency Syndrome-Associated Retrovirus In Human And Nonhuman Cells Transfected With An Infectious Molecular Clone, Akio Adachi, Howard E. Gendelman, Scott Koenig, Thomas Folks, Ronald Willey, Arnold Rabson, Malcom A. Martin
Production Of Acquired Immunodeficiency Syndrome-Associated Retrovirus In Human And Nonhuman Cells Transfected With An Infectious Molecular Clone, Akio Adachi, Howard E. Gendelman, Scott Koenig, Thomas Folks, Ronald Willey, Arnold Rabson, Malcom A. Martin
Nebraska Center for Virology: Faculty Publications
We constructed an infectious molecular clone of acquired immunodeficiency syndrome-associated retrovirus. Upon transfection, this clone directed the production of infectious virus particles in a wide variety of cells in addition to human T4 cells. The progeny, infectious virions, were synthesized in mouse, mink, monkey, and several human non-T cell lines, indicating the absence of any intracellular obstacle to viral RNA or protein production or assembly. During the course of these studies, a human colon carcinoma cell line, exquisitely sensitive to DNA transfection, was identified.
Tropism Of Sheep Lentiviruses For Monocytes: Susceptibility To Infection And Virus Gene Expression Increase During Maturation Of Monocytes To Macrophages, Howard E. Gendelman, Opendra Narayan, Suzanne Kennedy-Stoskopf, Peter G. E. Kennedy, Zahra Ghotbi, J. E. Clements, Jeff Stanley, Gholam Pezeshkpour
Tropism Of Sheep Lentiviruses For Monocytes: Susceptibility To Infection And Virus Gene Expression Increase During Maturation Of Monocytes To Macrophages, Howard E. Gendelman, Opendra Narayan, Suzanne Kennedy-Stoskopf, Peter G. E. Kennedy, Zahra Ghotbi, J. E. Clements, Jeff Stanley, Gholam Pezeshkpour
Nebraska Center for Virology: Faculty Publications
Visna lentiviruses have a natural tropism for cells of the macrophage lineage of sheep and goats, but virus replication in these cells in vivo is restricted so that only small quantities of virus are produced. One restricting factor suggested in previous studies is that virus replication is dependent on the maturity of the cells: the more mature the cell, the less restrictive the replication of the virus. Since monocytes in peripheral blood are precursors of macrophages, we investigated the effect of cell maturation on virus replication under limited control conditions in vitro by inoculating blood leukocytes with virus and retarding …
Htlv-Iii Serology In Hemophilia: Relationship With Immunologic Abnormalities, Joan C. Gill, Jay E. Menitove, Philip R. Anderson, James T. Casper, Sushilkumar G. Devare, Charles Wood, Stuart Adair, James Casey, Christi Scheffel, Robert R. Montgomery
Htlv-Iii Serology In Hemophilia: Relationship With Immunologic Abnormalities, Joan C. Gill, Jay E. Menitove, Philip R. Anderson, James T. Casper, Sushilkumar G. Devare, Charles Wood, Stuart Adair, James Casey, Christi Scheffel, Robert R. Montgomery
Nebraska Center for Virology: Faculty Publications
We investigated the relationship of the presence of antibodies to HTLV-III and immunologic abnormalities in patients with hemophilia. Serum antibodies to HTLV-III were analyzed by ELISA assay, immunoprecipitation of labeled cell extracts, and immunoprecipitation of purified HTLV-III p24. Thirty-four (61%) of the total group (n = 56) had antibody to HTLV-III; 34 (76%) of 45 patients given commercial factor VIII preparations were seropositive, compared with none of 11 patients treated exclusively with cryoprecipitate obtained from volunteer blood donors. Of patients who were seropositive for HTLV-III antibody, 94% had abnormal T4/T8 ratios, and 33% of those whose serum was antibody …
Activation Of A Translocated Human C-Myc Gene By An Enhancer In The Immunoglobulin Heavy-Chain Locus, Adrian C. Hayday, Stephen D. Gillies, Haruo Saito, Charles Wood, Klas Wiman, William S. Hayward, Susumu Tonegawa
Activation Of A Translocated Human C-Myc Gene By An Enhancer In The Immunoglobulin Heavy-Chain Locus, Adrian C. Hayday, Stephen D. Gillies, Haruo Saito, Charles Wood, Klas Wiman, William S. Hayward, Susumu Tonegawa
Nebraska Center for Virology: Faculty Publications
A tissue-specific transcriptional enhancer element that is associated with the human immunoglobulin heavy-chain locus is defined. In a non-Hodgkin’s lymphoma that contains a translocated c-myc gene this enhancer is retained on the 14q+ chromosome and occurs within sequences shown to activate previously cryptic promoters of the c-myc gene.
Two Transcription Products Of The Vesicular Stomatitis Virus Genome May Control L-Cell Protein Synthesis, David D. Dunigan, Jean M. Lucas-Lenard
Two Transcription Products Of The Vesicular Stomatitis Virus Genome May Control L-Cell Protein Synthesis, David D. Dunigan, Jean M. Lucas-Lenard
Nebraska Center for Virology: Faculty Publications
When mouse L-cells are infected with vesicular stomatitis virus, there is a decrease in the rate of protein synthesis ranging from 20 to 85% of that in mock-infected cells. Vesicular stomatitis virus, irradiated with increasing doses of UV light, eventually loses this capacity to inhibit protein synthesis. The UV inactivation curve was biphasic, suggesting that transcription of two regions of the viral genome is necessary for the virus to become inactivated in this capacity. The first transcription product corresponded to about 373 nucleotides, and the second corresponded to about 42 nucleotides. Inhibition of transcription of the larger product by irradiating …
Immunochemical Studies Of Conjugates Of Isomaltosyl Oligosaccharides To Lip I. Antigenicity Of The Glycolipids And The Production Of Specific Antibodies In Rabbits, Charles Wood, Elvin Kabat
Immunochemical Studies Of Conjugates Of Isomaltosyl Oligosaccharides To Lip I. Antigenicity Of The Glycolipids And The Production Of Specific Antibodies In Rabbits, Charles Wood, Elvin Kabat
Nebraska Center for Virology: Faculty Publications
The antigenicity of lipids is still ill-defined, and there is very little evidence that any pure lipid by itself will act as an antigen . To produce an immune response they must be complexed with or coupled to carriers (1-6) . Only glycosphingolipids and phosphatides have been found to function as haptens when mixed with carriers such as serum albumin (7), methylated bovine serum albumin (8), or other auxillary lipids (9-11), or when the glycolipid was incorporated into liposomes (12). Antibodies to glycolipids are usually directed primarily against the carbohydrate moiety (1, 7, 13, 14), and there is little evidence …
An Immunochemical Study Of The Combining Sites Of The Second Lectin Isolated From Bandeiraea Simplicifolia (Bs Ii), Charles Wood, E. A. Kabat, S. Ebisu, Irwin J. Goldstein
An Immunochemical Study Of The Combining Sites Of The Second Lectin Isolated From Bandeiraea Simplicifolia (Bs Ii), Charles Wood, E. A. Kabat, S. Ebisu, Irwin J. Goldstein
Nebraska Center for Virology: Faculty Publications
Two lectins with different binding specificities have been isolated from extracts of seeds of Bandeiraea simplicifolia. The first, Bandeiraea lectin I [11] was specific for terminal non-reducing αDGalactosyl residues. It reacted with B substances from human ovarian cysts and with several galactomannans to form precipitin lines in agar gels. Polysaccharides with terminal αDGalactosyl residues, such as larch galactan, did not react. The lectin agglutinated B erythrocytes strongly but also reacted to a lower titre with A1 and very weakly with A2 erythrocytes [15, 28] indicating that terminal non-reducing αDGalNAc [24] can …
Simplified Method For Efficient Intravascular Inoculation Of Chicken Embryos, Clayton L. Kelling, I. A. Schipper
Simplified Method For Efficient Intravascular Inoculation Of Chicken Embryos, Clayton L. Kelling, I. A. Schipper
Nebraska Center for Virology: Faculty Publications
The simple syringe-stabilizer unit described in this note provides a means for rapid intravascular inoculation of embryonated chicken eggs with minimal embryonic death from vascular trauma.
Comparison Of The Direct Agglutination And Indirect Hemagglutination Tests In The Determination Of Blood Serum Titers To Escherichia Coli Organisms, I. A. Schipper, Clayton L. Kelling, H. Ebeltoft, D. Graves
Comparison Of The Direct Agglutination And Indirect Hemagglutination Tests In The Determination Of Blood Serum Titers To Escherichia Coli Organisms, I. A. Schipper, Clayton L. Kelling, H. Ebeltoft, D. Graves
Nebraska Center for Virology: Faculty Publications
A comparison of the direct agglutination test and the indirect hemagglutination test for the detection of blood serum antibodies to Escherichia coli organisms indicated that these serological tests were comparable. In some instances the indirect hemagglutination test provided higher endpoint readings. Preparation of the antigens for the indirect hemagglutination test was more time consuming than for the direct agglutination test. Crude extract and purified polysaccharides were comparable as red blood cell sensitizing agents.
Replicating Single-Cycle Adenovirus Vectors Generate Amplified Influenza Vaccine Responses, Catherine M. Crosby, William E. Matchett, Stephanie S. Anguiano-Zarate, Christopher A. Parks, Eric A. Weaver, Larry R. Pease, Richard J. Webby, Michael A. Barry
Replicating Single-Cycle Adenovirus Vectors Generate Amplified Influenza Vaccine Responses, Catherine M. Crosby, William E. Matchett, Stephanie S. Anguiano-Zarate, Christopher A. Parks, Eric A. Weaver, Larry R. Pease, Richard J. Webby, Michael A. Barry
Nebraska Center for Virology: Faculty Publications
Head-to-head comparisons of conventional influenza vaccines with adenovirus (Ad) gene-based vaccines demonstrated that these viral vectors can mediate more potent protection against influenza virus infection in animal models. In most cases, Ad vaccines are engineered to be replication-defective (RD-Ad) vectors. In contrast, replication-competent Ad (RC-Ad) vaccines are markedly more potent but risk causing adenovirus diseases in vaccine recipients and health care workers. To harness antigen gene replication but avoid production of infectious virions, we developed “single-cycle” adenovirus (SC-Ad) vectors. Previous work demonstrated that SC-Ads amplify transgene expression 100-fold and produce markedly stronger and more persistent immune responses than RD-Ad vectors …