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Murine mammary tumor virus: characterization of infection of nonmurine cells
Journal article   Open access   Peer reviewed

Murine mammary tumor virus: characterization of infection of nonmurine cells

A B Vaidya, E Y Lasfargues, G Heubel, J C Lasfargues and D H Moore
Journal of virology, v 18(3), pp 911-917
Jun 1976
PMID: 178928
url
https://doi.org/10.1128/JVI.18.3.911-917.1976View
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Abstract

Cell Line Nucleic Acid Denaturation Cats Nucleic Acid Hybridization DNA, Viral - biosynthesis Mammary Tumor Virus, Mouse - growth & development Mammary Tumor Virus, Mouse - metabolism Hot Temperature Animals Dexamethasone - pharmacology Virus Replication Kinetics Mink
Murine mammary tumor virus (MuMTV) was used to productively infect feline and mink cells. MuMTV "proviral" DNA could be detected in the infected cells by molecular hybridization using radioactive MuMTV complementary DNA as a probe. Kinetic analysis of MuMTV proviral DNA synthesis after infection showed that maximum MuMTV DNA synthesis was achieved by 8 h; however, this was followed by a decline in detectable proviral DNA and eventual stabilization at a lower level. MuMTV synthesis in feline cells was greatly stimulated by the synthetic glucocorticoid, dexamehtasone. On the other hand, MuMTV synthesis in mink cells was relatively at a much higher level in absence of dexamethasone and the stimulation with dexamethasone was not as marked as in the case with infected feline cells. Thermal denaturation of hybrids between MuMTV complementary DNA and infected mink cell RNA revealed no difference from homologous hybrids.

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