In vitro productive infection of human malignant trophoblastic cell line JAR with human immunodeficiency virus type 1 (HIV-1).
Human choriocarcinoma cells of the JAR line, with no demonstrable surface CD4 receptor were infected with human immunodeficiency virus type 1 (HIV-1), strain RF. Primer-directed enzymatic DNA amplification (polymerase chain reaction, PCR) detected the presence of viral DNA when the cultures were investigated at day 5 post-infection (p.i.). The absence of cytopathic changes attributable to virus replication suggested silent infection of these malignant trophoblastic cells. Neither reverse transcriptase (RT) activity nor HIV-specific antigens were found in the culture nutrient medium during JAR cell propagation. However, when the HIV-carrier JAR cells were continuously cultured and the cocultivation was initiated with CEM-SS lymphoblastoid cells after two subsequent passages, rescue of infectious virus was observed.
Danish Cancer Society, Department of Virus and Cancer, Aarhus.
V
V
Zachar
P
P
Ebbesen
D000818:Animals; D001483:Base Sequence; D002460:Cell Line; D004279:DNA, Viral / Q000302:isolation & purification; D015497:HIV-1 / Q000235:genetics / Q000472:pathogenicity*; D006801:Humans; D008969:Molecular Sequence Data; D014327:Trophoblasts / Q000166:cytology / Q000382:microbiology*; D014407:Tumor Cells, Cultured
D004279:DNA, Viral