PMID- 6092699 OWN - NLM STAT- MEDLINE DCOM- 19841218 LR - 20200724 IS - 0022-538X (Print) IS - 1098-5514 (Electronic) IS - 0022-538X (Linking) VI - 52 IP - 3 DP - 1984 Dec TI - Mouse mammary tumor virus-related sequences in mouse lymphocytes are inducible by 12-O-tetradecanoyl phorbol-13-acetate. PG - 1000-4 AB - cDNA libraries from EL-4 cells treated with 12-O-tetradecanoyl phorbol-13-acetate (TPA) were screened for TPA-inducible sequences by differential hybridization. The most abundant inducible species was a sequence similar to that of mouse mammary tumor virus (MMTV). Induction of the mRNA corresponding to the MMTV-related sequences was already evident 30 min after TPA treatment, whereas the maximum accumulation occurred after 20 h of exposure to TPA. TPA also increased levels of MMTV-related RNA in the normal spleen cells of BALB/c and C57BL/6 mice. The level of RNA expression corresponding to MMTV-related sequences, however, was markedly elevated in EL-4 cells as compared with normal spleen cells. Southern blots of EL-4 cell DNA showed that the MMTV-related sequences were inserted into multiple locations of the EL-4 genome. Sequence analysis revealed that the MMTV-related cDNA clones included a part of the env gene and the right long terminal repeat of MMTV. However, the cDNA sequences were substantially different from published MMTV proviral sequences, most notably because of a contiguous deletion of 491 base pairs in the open reading frame within the U3 region. FAU - Kwon, B S AU - Kwon BS FAU - Weissman, S M AU - Weissman SM LA - eng SI - GENBANK/M11024 GR - CA 30938-03/CA/NCI NIH HHS/United States PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, P.H.S. PL - United States TA - J Virol JT - Journal of virology JID - 0113724 RN - 0 (Phorbols) RN - 0 (RNA, Messenger) RN - NI40JAQ945 (Tetradecanoylphorbol Acetate) SB - IM MH - Amino Acid Sequence MH - Animals MH - Base Sequence MH - Cells, Cultured MH - Gene Expression Regulation/drug effects MH - *Genes, Viral MH - Lymphocytes/*physiology MH - Mammary Tumor Virus, Mouse/*genetics MH - Mice MH - Mice, Inbred Strains MH - Phorbols/*pharmacology MH - RNA, Messenger/genetics MH - Spleen/physiology MH - Tetradecanoylphorbol Acetate/*pharmacology MH - Transcription, Genetic/drug effects PMC - PMC254629 EDAT- 1984/12/01 00:00 MHDA- 1984/12/01 00:01 PMCR- 1984/12/01 CRDT- 1984/12/01 00:00 PHST- 1984/12/01 00:00 [pubmed] PHST- 1984/12/01 00:01 [medline] PHST- 1984/12/01 00:00 [entrez] PHST- 1984/12/01 00:00 [pmc-release] AID - 10.1128/JVI.52.3.1000-1004.1984 [doi] PST - ppublish SO - J Virol. 1984 Dec;52(3):1000-4. doi: 10.1128/JVI.52.3.1000-1004.1984.