Document 0558 DOCN M9480558 TI Antisense oligonucleotide complementary to endogenous retroviral MCF env gene inhibits both BFU-E and CFU-S colony formation in mice. DT 9410 AU Chernukhin IV; Khaldoyanidi SK; Dikovskaya DV; Svinarchuk FP; Vlasov VV; Gaidul KV; Institute of Clinical Immunology, Novosibirsk, Russian; Federation. SO FEBS Lett. 1994 Jul 11;348(2):197-200. Unique Identifier : AIDSLINE MED/94307424 AB A possible biologic activity of endogenously expressed env sequence of retroviral mink cell focus-forming virus (MCF) genome for hematopoietic colony formation was studied in mice. Antisense 20-mer complementary to MCF env sequence was used to detect the result of blockage of this gene translation on the potency of marrow cells to form colonies of erythroid (BFU-E), myeloid granulocyte-macrophage (CFU-GM), and stem cell (day 11 CFU-S) hematopoietic compartments. A large relative decrease in BFU-E number was found in bone marrow cell cultures preincubated with antisense oligonucleotide during 4 h, whereas CFU-GM colonies remained unaffected. A marked reduction of CFU-S colony formation was also registered under antisense oligomer influence. Following a decreased proliferation of erythroid progenitors, we suggest the mechanism by which antisense oligonucleotide could cause the loss of colony formation. Taken together, these data allow to propose that the expression of this gene is naturally significant for hematopoietic progenitor activity exerting some property of env gene products to regulate the growth of erythroid and multilineage hematopoietic precursors. DE Amino Acid Sequence Animal Base Sequence Cell Division/DRUG EFFECTS Cells, Cultured Colony-Forming Units Assay *Genes, env Hematopoietic Stem Cells/CYTOLOGY/*DRUG EFFECTS Male Mice Mice, Inbred C57BL Mink Cell Focus-Inducing Viruses/*GENETICS Molecular Sequence Data Oligonucleotides, Antisense/GENETICS/*PHARMACOLOGY JOURNAL ARTICLE SOURCE: National Library of Medicine. NOTICE: This material may be protected by Copyright Law (Title 17, U.S.Code).