Abstract
The proto-oncogene c-myc may play a role in controlling the growth and division of normal cells, and abnormalities of the gene have been implicated in the genesis of a substantial variety of human tumors. To facilitate further study of these issues, we developed antisera that permit the identification and isolation of the protein encoded by the human and other mammalian versions of c-myc. We found that c-myc(human) gives rise to at least two phosphoproteins with apparent molecular weights of 62,000 [pp62c-myc(human), the major product] and 66,000 [pp66c-myc(human), produced in smaller quantities and possibly a modified version of the Mr 62,000 protein]. Both proteins have relatively short half-lives of approximately equal to 30 min. Mouse c-myc encodes similar proteins with molecular weights of 64,000 and 66,000. The use of cells transformed by DNA-mediated gene transfer sustained previous deductions that the entire coding domain of c-myc(human) is contained in the second and third exons of the gene and resolved previous ambiguities by showing that analogous exons specify the entire protein product of c-myc(chicken). Tumor cells containing amplification of c-myc(human) produce relatively large amounts of pp62/pp66c-myc(human). By contrast, translocations of c-myc found in cells derived from Burkitt lymphoma appear merely to sustain expression of c-myc(human) at levels found also in nontumorigenic lymphoblastoid cells, rather than to increase expression of the gene to manifestly abnormal levels.
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Selected References
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- Alitalo K., Ramsay G., Bishop J. M., Pfeifer S. O., Colby W. W., Levinson A. D. Identification of nuclear proteins encoded by viral and cellular myc oncogenes. Nature. 1983 Nov 17;306(5940):274–277. doi: 10.1038/306274a0. [DOI] [PubMed] [Google Scholar]
- Alitalo K., Schwab M., Lin C. C., Varmus H. E., Bishop J. M. Homogeneously staining chromosomal regions contain amplified copies of an abundantly expressed cellular oncogene (c-myc) in malignant neuroendocrine cells from a human colon carcinoma. Proc Natl Acad Sci U S A. 1983 Mar;80(6):1707–1711. doi: 10.1073/pnas.80.6.1707. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Battey J., Moulding C., Taub R., Murphy W., Stewart T., Potter H., Lenoir G., Leder P. The human c-myc oncogene: structural consequences of translocation into the IgH locus in Burkitt lymphoma. Cell. 1983 Oct;34(3):779–787. doi: 10.1016/0092-8674(83)90534-2. [DOI] [PubMed] [Google Scholar]
- Bernard O., Cory S., Gerondakis S., Webb E., Adams J. M. Sequence of the murine and human cellular myc oncogenes and two modes of myc transcription resulting from chromosome translocation in B lymphoid tumours. EMBO J. 1983;2(12):2375–2383. doi: 10.1002/j.1460-2075.1983.tb01749.x. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Bishop J. M. Cellular oncogenes and retroviruses. Annu Rev Biochem. 1983;52:301–354. doi: 10.1146/annurev.bi.52.070183.001505. [DOI] [PubMed] [Google Scholar]
- Bister K., Hayman M. J., Vogt P. K. Defectiveness of avian myelocytomatosis virus MC29: isolation of long-term nonproducer cultures and analysis of virus-specific polypeptide synthesis. Virology. 1977 Oct 15;82(2):431–448. doi: 10.1016/0042-6822(77)90017-4. [DOI] [PubMed] [Google Scholar]
- Colby W. W., Chen E. Y., Smith D. H., Levinson A. D. Identification and nucleotide sequence of a human locus homologous to the v-myc oncogene of avian myelocytomatosis virus MC29. Nature. 1983 Feb 24;301(5902):722–725. doi: 10.1038/301722a0. [DOI] [PubMed] [Google Scholar]
- Collins S., Groudine M. Amplification of endogenous myc-related DNA sequences in a human myeloid leukaemia cell line. Nature. 1982 Aug 12;298(5875):679–681. doi: 10.1038/298679a0. [DOI] [PubMed] [Google Scholar]
- Giallongo A., Appella E., Ricciardi R., Rovera G., Croce C. M. Identification of the c-myc oncogene product in normal and malignant B cells. Science. 1983 Oct 28;222(4622):430–432. doi: 10.1126/science.6604943. [DOI] [PubMed] [Google Scholar]
- Green N., Alexander H., Olson A., Alexander S., Shinnick T. M., Sutcliffe J. G., Lerner R. A. Immunogenic structure of the influenza virus hemagglutinin. Cell. 1982 Mar;28(3):477–487. doi: 10.1016/0092-8674(82)90202-1. [DOI] [PubMed] [Google Scholar]
- Hann S. R., Abrams H. D., Rohrschneider L. R., Eisenman R. N. Proteins encoded by v-myc and c-myc oncogenes: identification and localization in acute leukemia virus transformants and bursal lymphoma cell lines. Cell. 1983 Oct;34(3):789–798. doi: 10.1016/0092-8674(83)90535-4. [DOI] [PubMed] [Google Scholar]
- Hayward W. S., Neel B. G., Astrin S. M. Activation of a cellular onc gene by promoter insertion in ALV-induced lymphoid leukosis. Nature. 1981 Apr 9;290(5806):475–480. doi: 10.1038/290475a0. [DOI] [PubMed] [Google Scholar]
- Kelly K., Cochran B. H., Stiles C. D., Leder P. Cell-specific regulation of the c-myc gene by lymphocyte mitogens and platelet-derived growth factor. Cell. 1983 Dec;35(3 Pt 2):603–610. doi: 10.1016/0092-8674(83)90092-2. [DOI] [PubMed] [Google Scholar]
- Klein G. Specific chromosomal translocations and the genesis of B-cell-derived tumors in mice and men. Cell. 1983 Feb;32(2):311–315. doi: 10.1016/0092-8674(83)90449-x. [DOI] [PubMed] [Google Scholar]
- Laimins L. A., Khoury G., Gorman C., Howard B., Gruss P. Host-specific activation of transcription by tandem repeats from simian virus 40 and Moloney murine sarcoma virus. Proc Natl Acad Sci U S A. 1982 Nov;79(21):6453–6457. doi: 10.1073/pnas.79.21.6453. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Land H., Parada L. F., Weinberg R. A. Tumorigenic conversion of primary embryo fibroblasts requires at least two cooperating oncogenes. Nature. 1983 Aug 18;304(5927):596–602. doi: 10.1038/304596a0. [DOI] [PubMed] [Google Scholar]
- Leder P., Battey J., Lenoir G., Moulding C., Murphy W., Potter H., Stewart T., Taub R. Translocations among antibody genes in human cancer. Science. 1983 Nov 18;222(4625):765–771. doi: 10.1126/science.6356357. [DOI] [PubMed] [Google Scholar]
- Little C. D., Nau M. M., Carney D. N., Gazdar A. F., Minna J. D. Amplification and expression of the c-myc oncogene in human lung cancer cell lines. Nature. 1983 Nov 10;306(5939):194–196. doi: 10.1038/306194a0. [DOI] [PubMed] [Google Scholar]
- Neil J. C., Hughes D., McFarlane R., Wilkie N. M., Onions D. E., Lees G., Jarrett O. Transduction and rearrangement of the myc gene by feline leukaemia virus in naturally occurring T-cell leukaemias. 1984 Apr 26-May 2Nature. 308(5962):814–820. doi: 10.1038/308814a0. [DOI] [PubMed] [Google Scholar]
- Payne G. S., Bishop J. M., Varmus H. E. Multiple arrangements of viral DNA and an activated host oncogene in bursal lymphomas. Nature. 1982 Jan 21;295(5846):209–214. doi: 10.1038/295209a0. [DOI] [PubMed] [Google Scholar]
- Perry R. P. Consequences of myc invasion of immunoglobulin loci: facts and speculation. Cell. 1983 Jul;33(3):647–649. doi: 10.1016/0092-8674(83)90006-5. [DOI] [PubMed] [Google Scholar]
- Rabbitts T. H., Forster A., Hamlyn P., Baer R. Effect of somatic mutation within translocated c-myc genes in Burkitt's lymphoma. Nature. 1984 Jun 14;309(5969):592–597. doi: 10.1038/309592a0. [DOI] [PubMed] [Google Scholar]
- Rabbitts T. H., Hamlyn P. H., Baer R. Altered nucleotide sequences of a translocated c-myc gene in Burkitt lymphoma. Nature. 1983 Dec 22;306(5945):760–765. doi: 10.1038/306760a0. [DOI] [PubMed] [Google Scholar]
- Ramsay G., Hayman M. J., Bister K. Phosphorylation of specific sites in the gag-myc polyproteins encoded by MC29-type viruses correlates with their transforming ability. EMBO J. 1982;1(9):1111–1116. doi: 10.1002/j.1460-2075.1982.tb01305.x. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Robins T., Bister K., Garon C., Papas T., Duesberg P. Structural relationship between a normal chicken DNA locus and the transforming gene of the avian acute leukemia virus MC29. J Virol. 1982 Feb;41(2):635–642. doi: 10.1128/jvi.41.2.635-642.1982. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Shih C., Weinberg R. A. Isolation of a transforming sequence from a human bladder carcinoma cell line. Cell. 1982 May;29(1):161–169. doi: 10.1016/0092-8674(82)90100-3. [DOI] [PubMed] [Google Scholar]
- Stanton L. W., Yang J. Q., Eckhardt L. A., Harris L. J., Birshtein B. K., Marcu K. B. Products of a reciprocal chromosome translocation involving the c-myc gene in a murine plasmacytoma. Proc Natl Acad Sci U S A. 1984 Feb;81(3):829–833. doi: 10.1073/pnas.81.3.829. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Vennstrom B., Sheiness D., Zabielski J., Bishop J. M. Isolation and characterization of c-myc, a cellular homolog of the oncogene (v-myc) of avian myelocytomatosis virus strain 29. J Virol. 1982 Jun;42(3):773–779. doi: 10.1128/jvi.42.3.773-779.1982. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Watson D. K., Psallidopoulos M. C., Samuel K. P., Dalla-Favera R., Papas T. S. Nucleotide sequence analysis of human c-myc locus, chicken homologue, and myelocytomatosis virus MC29 transforming gene reveals a highly conserved gene product. Proc Natl Acad Sci U S A. 1983 Jun;80(12):3642–3645. doi: 10.1073/pnas.80.12.3642. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Watson D. K., Reddy E. P., Duesberg P. H., Papas T. S. Nucleotide sequence analysis of the chicken c-myc gene reveals homologous and unique coding regions by comparison with the transforming gene of avian myelocytomatosis virus MC29, delta gag-myc. Proc Natl Acad Sci U S A. 1983 Apr;80(8):2146–2150. doi: 10.1073/pnas.80.8.2146. [DOI] [PMC free article] [PubMed] [Google Scholar]