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Bauer H. Untersuchungen über Struktur, Vermehrung und onkogene Wirkung der Hühner-Leukose-Sarkomatose-Viren*. ACTA ACUST UNITED AC 2010. [DOI: 10.1111/j.1439-0450.1970.tb01569.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Huebner RJ, Sarma PS, Kelloff GJ, Gilden RV, Meier H, Myers DD, Peters RL. IMMUNOLOGICAL TOLERANCE TO RNA TUMOR VIRUS GENOME EXPRESSIONS: SIGNIFICANCE OF TOLERANCE AND PRENATAL EXPRESSIONS IN EMBRYOGENESIS AND TUMORIGENESIS. Ann N Y Acad Sci 2006. [DOI: 10.1111/j.1749-6632.1971.tb49831.x] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Vlaovic M, Jovanovic M, Buening G, Loan R. Role of cell‐mediated immunity (CMI) in chickens inoculated with avian Leukosis/sarcoma virus 1. Avian Pathol 1977; 6:171-9. [DOI: 10.1080/03079457708418224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Calneck BW, Payne LN. Lack of correlation between Marena tumor induction and expression of endogenous avian RNA tumor virus genome. Int J Cancer 1976; 17:235-44. [PMID: 175029 DOI: 10.1002/ijc.2910170212] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Infection with Marek's disease virus (MDV) and subsequent tumor development failed to induce the expression of endogenous avian RNA tumor virus genome in Line-15I and Line-7 chickens which lacked such expression at 1 day of age. Titers of avian leukosis virus (ALV) group-specific (gs) antigen detected by the COFAL test and expression of chick helper factor (chf) activity remained relatively constant in birds which expressed these genome functions at hatching time. Endogenous ALV belonging to the E-subgroup was isolated from two of 50 birds; both were controls not exposed to MDV. There was no correlation between expression of ALV genome (gs or chf) at 1 day of age and the rate of tumor development subsequent ot MDV infection. It was concluded that MDV infection can induce tumors without the participation of endogenous ALV genome.
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Charman HP, Gardner MB, McAllister RM, Kim N, Gilden RV. Humoral immune responses of cats to mammalian type-C virus p30s. Int J Cancer 1976; 17:98-108. [PMID: 175024 DOI: 10.1002/ijc.2910170114] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Natural and experimental cat sera were tested in radioimmune precipitation assays vs purified p30s from FeLV, RD114 and MuLV. Antibodies with specificity for FeLV p30 comparable to hyperimmune sera from heterologous species but of low titer were found in a high percentage of normal cats from households with a high incidence of FeLV and neoplasia. Sera from cats with neoplasms were generally negative. Cats immunized with FeLV gave low-level immune response, also of the same general specificity as heterologous hyperimmune sera. Cat sera do not normally show antibody to RD114 p30 although two immunized weanling cats produced low titered but highly specific p30 antibody. Thus, for both classes of feline type-C virus p30s, there is an evident capability of the cat to mount an immune response to natural or experimental exposure to the respective proteins. The magnitude of the response is between 100 and 1,000 fold below that seen in heterologous species. In contrast, cats immunized with MuLV p30 gave immune responses comparable to those seen in guinea-pigs, rabbits and goats. Several very old cats with carcinoma had antibody which preferentially precipitated MuVL p30. A competition assay using one such serum and labelled MuVL p30 was inhibited by FeVL, RD114, and MuLV p30s. This indicates that the assay is "interspecies" in nature. Among the possible explanations of this reaction category is that it represents antibody to the p30 of an as yet undefined class of feline type-C virus.
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Bolognesi DP, Ishizaki R, Hüper G, Vanaman TC, Smith RE. Immunological properties of avian oncornavirus polypeptides. Virology 1975; 64:349-57. [PMID: 49120 DOI: 10.1016/0042-6822(75)90111-7] [Citation(s) in RCA: 38] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Noronha F, Dougherty E, Poco A, Gries C, Post J, Rickard C. Cytological and serological studies of a feline endogenous C-type virus. ARCHIV FUR DIE GESAMTE VIRUSFORSCHUNG 1974; 45:235-48. [PMID: 4371205 DOI: 10.1007/bf01249686] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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Temin HM. The cellular and molecular biology of RNA tumor viruses, especially avian leukosis-sarcoma viruses, and their relatives. Adv Cancer Res 1974; 19:47-104. [PMID: 4137243 DOI: 10.1016/s0065-230x(08)60052-4] [Citation(s) in RCA: 41] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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Strand M, August JT. Structural proteins of mammalian oncogenic RNA viruses: multiple antigenic determinants of the major internal protein and envelope glycoprotein. J Virol 1974; 13:171-80. [PMID: 4129838 PMCID: PMC355272 DOI: 10.1128/jvi.13.1.171-180.1974] [Citation(s) in RCA: 189] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
The antigenic determinants of two purified protein constituents of mammalian C-type RNA viruses, the major structural protein of about 30,000 daltons, and the membrane glycopeptides of about 70,000 daltons were examined by competition radioimmunoassay. By the appropriate choice of antiserum and competing proteins, it was possible to distinguish type-specific, group-specific, and interspecies determinants. Both of the viral constituents were found to contain each of these three classes of antigens. The results suggested that the majority of the determinants of the major structural protein were group specific, 5% to 30% were interspecies, and a small fraction were type specific. In the case of the envelope glycopeptides, the chief determinants were type and group specific, and a small fraction were interspecies.
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Ruoslahti E, Vaheri A, Estola T, Sandelin K. Antibodies against avian GS antigen in chickens infected naturally and experimentally with avian RNA tumor viruses. Int J Cancer 1973; 11:595-603. [PMID: 4133948 DOI: 10.1002/ijc.2910110311] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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Hanafusa T, Hanafusa H, Miyamoto T, Fleissner E. Existence and expression of tumor virus genes in chick embryo cells. Virology 1972; 47:475-82. [PMID: 4333741 DOI: 10.1016/0042-6822(72)90283-8] [Citation(s) in RCA: 70] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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Weber J, Yohn DS. Detection and assay of avian tumor virus group-specific antigen and antibody by the paired radioiodine-labeled antibody technique. J Virol 1972; 9:244-50. [PMID: 4335519 PMCID: PMC356289 DOI: 10.1128/jvi.9.2.244-250.1972] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
The paired radioiodine-labeled antibody technique (PRILAT) was applied to the detection and quantitation of avian tumor virus group-specific (gs) antigens and antibody. The technique proved to be specific, repeatable, and appreciably more sensitive than the microcomplement-fixation test for avian leukosis (COFAL). The PRILAT facilitated direct measurement of comparative antigen content of several types of transformed, neoplastic, or virus-infected cells and the magnitude of nonspecific antibody binding by appropriate control cells. The versatility of the technique was illustrated by application to the detection and quantitation of gs antibody content of chicken, turkey, pigeon, and hamster sera. Antibodies were detected in COFAL-negative sera from hamsters bearing tumors induced by the Schmidt-Ruppin strain of Rous sarcoma virus. Sera from chickens bearing similar tumors were not positive for gs antibodies, although sera from turkeys and chickens immunized with avian leukosis virus did contain gs antibodies.
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De Noronha F, Post JE, Norcross NL, Rickard CG. Induction of group-specific interspecies antibody in a cat by immunization with disrupted feline leukaemia virus. NATURE: NEW BIOLOGY 1972; 235:14-5. [PMID: 4336391 DOI: 10.1038/newbio235014a0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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Bonar RA, Ishizaki R, Beard JW. Immunoelectrophoretic analysis of avian ribonucleic acid tumor virus group-specific antigens. J Virol 1972; 9:90-5. [PMID: 4333547 PMCID: PMC356266 DOI: 10.1128/jvi.9.1.90-95.1972] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
Tumors induced in pigeons by inoculation with the Schmidt-Ruppin strain of Rous sarcoma virus regressed after about 6 weeks. Sera from these pigeons, taken 8 weeks after inoculation, had complement-fixing group-specific antibody titers of 1:2 to 1:256. In immunoelectrophoresis with the pigeon serum, disrupted BAI strain A (myeloblastosis) avian tumor virus showed at least five precipitin arcs. The pattern of precipitin lines was dependent in part on the means used for virus disruption, and ethyl ether and nonionic detergents appeared to be both effective and relatively mild reagents. Immunoelectrophoretic comparison of pigeon serum with serum from a tumor-bearing hamster and that from virus-inoculated rabbits yielded similar, though not identical, results.
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Ŝimkoviĉ D. Characteristics of Tumors Induced in Mammals, Especially Rodents, by Viruses of the Avian Leukosis Sarcoma Group. Adv Virus Res 1972. [DOI: 10.1016/s0065-3527(08)60748-4] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Roth FK, Meyers P, Dougherty RM. The presence of avian leukosis virus group-specific antibodies in chicken sera. Virology 1971; 45:265-74. [PMID: 4329589 DOI: 10.1016/0042-6822(71)90133-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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Pontén J. Spontaneous and virus induced transformation in cell culture. VIROLOGY MONOGRAPHS. DIE VIRUSFORSCHUNG IN EINZELDARSTELLUNGEN 1971; 8:1-253. [PMID: 4354654 DOI: 10.1007/978-3-7091-8258-1_1] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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Bolognesi DP, Bauer H. Polypeptides of avian RNA tumor viruses. 1. Isolation and physical and chemical analysis. Virology 1970; 42:1097-112. [PMID: 4099078 DOI: 10.1016/0042-6822(70)90357-0] [Citation(s) in RCA: 111] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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Allen DW, Sarma PS, Niall HD, Sauer R. Isolation of a second avian leukosis group-specific antigen (gs-b) from avian myeloblastosis virus. Proc Natl Acad Sci U S A 1970; 67:837-42. [PMID: 4331722 PMCID: PMC283281 DOI: 10.1073/pnas.67.2.837] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
Gs-b, a second group-specific antigenic protein of the avian leukosis group, has been isolated from Tween 80-ether treated avian myeloblastosis virus by Sephadex and carboxymethylcellulose chromatography, and compared by immunological and chemical means with the antigen (gs-a) described previously.
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Abstract
Virus-specific antigens were studied in hamster cells transformed by Rous sarcoma virus (RSV). Antigens were localized in the cytoplasm, as demonstrated by fluorescent antibody staining of fixed cells as well as by complement fixation (CF) following subcellular fractionation. Cytoplasmic extracts were analyzed by velocity and isopycnic centrifugation. CF antigens were found in a soluble form and in association with membranes and polyribosomes. Isolated plasma membranes had no CF antigen. Both soluble and particulate fractions with CF activity contained the same antigenic determinants by Ouchterlony analysis. These antigenic determinants were identical to those released by ether treatment of RSV.
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Hardy WD, Geering G, Old LJ, DE Harven E, Brody RS, McDonough S. Feline leukemia virus: occurrence of viral antigen in the tissues of cats with lymphosarcoma and other diseases. Science 1969; 166:1019-21. [PMID: 4981495 DOI: 10.1126/science.166.3908.1019] [Citation(s) in RCA: 75] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Felinie leutkemia viruts antigen is demonstrable by immunodiffusion with rabbit precipitating antiserum to purified felinie leukemia virus. The felinie leukemia virus antigen was found in the tissues of 25 of 33 cats with lymphosarcoma and of 5 of 13 cats with infectious peritonitis. Its presence was correlated with the occurrence of felinie leukemia virus demonstrable by electron microscopy. The one clinically normal cat giving a positive test for feline leukemia virus antigen belonged to a household in which two cats had developed lymphosarcoma. With the exception of a dog with lymphosarcoma induced by feline leukemia virus, the antigent was absent from lymphosarcoma and nonlymphomatous tumors of other species (man, dog, cow, goat, or pig).
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Thurzo V, Simkovicová M, Simkovic D. Studies on group-specific antigens in tumours induced with avian tumour viruses in rats. Int J Cancer 1969; 4:852-8. [PMID: 4314174 DOI: 10.1002/ijc.2910040614] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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Fritz RB, Langlois AJ, Beard JW. Reaction of chick embryo cells infected with leukosis strain MC29 virus with fluorescein-labeled antibody. J Virol 1969; 4:372-9. [PMID: 4186277 PMCID: PMC375884 DOI: 10.1128/jvi.4.4.372-379.1969] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Immune serum was prepared in the rabbit with BAI strain A leukosis virus isolated by centrifugal fractionation from the plasma of chickens with myeloblastic leukemia and further purified on a potassium tartrate gradient. Antibody to group-specific antigen was demonstrated in the serum by immunoelectrophoresis and immunodiffusion. Fluorescein-conjugated serum was used unabsorbed and absorbed with chick cells for study of acetone-fixed chick embryo cells uninfected or infected with strain MC29 avian leukosis virus. With unabsorbed serum, large numbers of cytoplasmic particles stained in a few cells within 2 hr after exposure to virus, and the cell number increased greatly in 24 hr. Absorption of the serum abolished the early reaction. Staining with absorbed serum was delayed until about 14 hr after culture exposure to virus, but essentially all cells were stained within 72 hr at the time when all cells were morphologically altered. Differences between the responses to unabsorbed and absorbed serum suggested cytoplasmic formation or concentration of chick tissue antigen similar to that incorporated in leukosis virus particles. The characteristics of staining with absorbed serum were similar to those observed by others in analogous studies with avian tumor viruses.
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