Restricted expression of retrovirus nucleic acids and proteins in primate type C virus (gibbon ape leukemia virus-simian sarcoma virus)-initiated human B-lymphoblast cultures.

Important note: Information in this article was accurate in 1981. The state of the art may have changed since the publication date.

Restricted expression of retrovirus nucleic acids and proteins in primate type C virus (gibbon ape leukemia virus-simian sarcoma virus)-initiated human B-lymphoblast cultures.

Cancer Res. 1981 Jul;41(7):2738-44. Unique Identifier : AIDSLINE MED/81234274
Markham PD; Ruscetti FW; Kalyanaraman VS; Ceccherini-Nelli L; Miller NR; Reitz MS; Salahuddin SZ; Gallo RC

Abstract: Fresh human B-lymphoblasts established in culture following exposure of adult peripheral blood leukocytes to type C retroviruses of the simian sarcoma virus/simian sarcoma-associated virus-gibbon ape leukemia virus group were analyzed in detail for the presence of the infecting virus. Viral expression ranged from production of low levels of intact virus in a few cultures to the presence of viral RNA and protein in the absence of detectable of levels of complete virus in the majority of the cultures. In situ molecular hybridization assays using 3H-labeled complementary DNA and indirect immunofluorescence assays using antibody to purified viral protein indicated that the expression of viral RNA and proteins are preferentially expressed in only a fraction of the cells in some cultures. If expression of the infecting viral sequences is necessary for the sustained growth of these cells, then those cells detectably synthesizing viral RNA and proteins may be influencing the growth of the remaining virus-negative cells. The lack of virus production in cultures synthesizing viral RNA and protein indicate that these human B-lymphocytes restrict the life cycle of these viruses at some step(s) after transcription of viral RNA or translation of viral protein.

Keywords: B-Lymphocytes/*MICROBIOLOGY Comparative Study Fluorescent Antibody Technique Human Nucleic Acids/ANALYSIS Protein Hybridization Radioimmunoassay Retroviridae/ISOLATION & PURIF RNA, Viral/ANALYSIS Sarcoma Viruses, Simian/ISOLATION & PURIF Viral Proteins/ANALYSIS/IMMUNOLOGY JOURNAL ARTICLE
811130
M81B0006

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