Biomaterial Database

Inactivating and mutagenic effects of nitrosoguanide on human cytomegalovirus. 1990

C Hamelin, and M Dion, and L Cousineau

Centre de recherche en virologie, Institut Armand-Frappier, Laval-des-Rapides, Québec, Canada.

Human cytomegalovirus (HCMV) was exposed for 24 hr to 10-30 micrograms/ml nitrosoguanidine (NG) at different times postinfection. NG treatments performed 24 to 48 hr after infection of human IAFP-1 fibroblasts with HCMV interfered most significantly with the replication of the virus. No correlation was found, however, between the inactivating effect of NG at this particular stage of the replication cycle and the induction of HCMV temperature-sensitive mutants. All the 17 HCMV mutant strains isolated on this occasion showed the same BamHI, Cfo I, Hpa II and Sph I restriction profiles which is indicative of mutations caused by single base changes.

UI	MeSH Term	Description	Entries
D009153	Mutagens	Chemical agents that increase the rate of genetic mutation by interfering with the function of nucleic acids. A clastogen is a specific mutagen that causes breaks in chromosomes.	Clastogen,Clastogens,Genotoxin,Genotoxins,Mutagen
D009604	Nitrosoguanidines	Nitrosylated derivatives of guanidine. They are used as MUTAGENS in MOLECULAR BIOLOGY research.
D003587	Cytomegalovirus	A genus of the family HERPESVIRIDAE, subfamily BETAHERPESVIRINAE, infecting the salivary glands, liver, spleen, lungs, eyes, and other organs, in which they produce characteristically enlarged cells with intranuclear inclusions. Infection with Cytomegalovirus is also seen as an opportunistic infection in AIDS.	Herpesvirus 5, Human,Human Herpesvirus 5,Salivary Gland Viruses,HHV 5,Herpesvirus 5 (beta), Human,Cytomegaloviruses,Salivary Gland Virus,Virus, Salivary Gland,Viruses, Salivary Gland
D004262	DNA Restriction Enzymes	Enzymes that are part of the restriction-modification systems. They catalyze the endonucleolytic cleavage of DNA sequences which lack the species-specific methylation pattern in the host cell's DNA. Cleavage yields random or specific double-stranded fragments with terminal 5'-phosphates. The function of restriction enzymes is to destroy any foreign DNA that invades the host cell. Most have been studied in bacterial systems, but a few have been found in eukaryotic organisms. They are also used as tools for the systematic dissection and mapping of chromosomes, in the determination of base sequences of DNAs, and have made it possible to splice and recombine genes from one organism into the genome of another. EC 3.21.1.	Restriction Endonucleases,DNA Restriction Enzyme,Restriction Endonuclease,Endonuclease, Restriction,Endonucleases, Restriction,Enzymes, DNA Restriction,Restriction Enzyme, DNA,Restriction Enzymes, DNA
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D013696	Temperature	The property of objects that determines the direction of heat flow when they are placed in direct thermal contact. The temperature is the energy of microscopic motions (vibrational and translational) of the particles of atoms.	Temperatures
D014775	Virus Activation	The mechanism by which latent viruses, such as genetically transmitted tumor viruses (PROVIRUSES) or PROPHAGES of lysogenic bacteria, are induced to replicate and then released as infectious viruses. It may be effected by various endogenous and exogenous stimuli, including B-cell LIPOPOLYSACCHARIDES, glucocorticoid hormones, halogenated pyrimidines, IONIZING RADIATION, ultraviolet light, and superinfecting viruses.	Prophage Excision,Prophage Induction,Virus Induction,Viral Activation,Activation, Viral,Activation, Virus,Activations, Viral,Activations, Virus,Excision, Prophage,Excisions, Prophage,Induction, Prophage,Induction, Virus,Inductions, Prophage,Inductions, Virus,Prophage Excisions,Prophage Inductions,Viral Activations,Virus Activations,Virus Inductions