title: Biomolecular analysis of a defective nontransforming Epstein-Barr virus (EBV) from a patient with chronic active EBV infection.
abstract: A virus recovered from the saliva of a child with chronic active Epstein-Barr virus (EBV) infection for 8 years was shown to induce EBV early antigen (EBV-EA) in Raji cells and to be expressed into EBV-EA in fresh EBV-negative peripheral blood leukocytes. However, it did not replicate its DNA. Oropharyngeal epithelial cells scraped from recurrent mouth lesions were similarly positive for EBV-EA. DNA extracted from these cells and digested with BamHI contained a 6-kilobase-pair fragment homologous to BamHI fragment V and B1 EBV DNA probes. Furthermore, Southern blots of the BamHI and EcoRI digests of the DNA extracted from the cell lines of the patient (transformed with EBV strain B95-8) and of her mother (spontaneous) revealed, in addition to the expected BamHI G, H, H2, and B1 fragments used as probes, additional shorter ones of a presumably endogenous defective virus.
mesh_terms: D000956:Antigens, Viral / Q000096:biosynthesis; D002460:Cell Line; D002472:Cell Transformation, Viral; D002648:Child; D002908:Chronic Disease; D004261:DNA Replication; D004262:DNA Restriction Enzymes; D004279:DNA, Viral / Q000032:analysis*; D003673:Defective Viruses / Q000235:genetics*; D015245:Deoxyribonuclease BamHI; D015246:Deoxyribonuclease EcoRI; D005260:Female; D005814:Genes, Viral; D006566:Herpesviridae Infections / Q000382:microbiology*; D004854:Herpesvirus 4, Human / Q000235:genetics* / Q000276:immunology; D006801:Humans; D009693:Nucleic Acid Hybridization; D014779:Virus Replication
chemical_list: D000956:Antigens, Viral; D004279:DNA, Viral; C033305:Epstein-Barr virus early antigen; D004262:DNA Restriction Enzymes; D015245:Deoxyribonuclease BamHI; D015246:Deoxyribonuclease EcoRI