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. 1986 Oct;83(20):7806–7810. doi: 10.1073/pnas.83.20.7806

Two proto-oncogenes implicated in mammary carcinogenesis, int-1 and int-2, are independently regulated during mouse development.

A Jakobovits, G M Shackleford, H E Varmus, G R Martin
PMCID: PMC386811  PMID: 2429320

Abstract

The int-1 and int-2 genes were first isolated as targets for transcriptional activation by proviral insertion mutations in mammary carcinomas induced by the mouse mammary tumor virus (MMTV). Since these proto-oncogenes are not expressed at detectable levels in previously tested normal tissues from adult mice, we sought to determine whether these genes might be active during embryogenesis by examining mouse embryos and cultured teratocarcinoma cells for RNA encoded by int-1 and int-2. A single size class of int-1 RNA is present only at mid-gestation stages of development (days 8 through 13) and is also detected in testes from postpuberal mice. Four species of int-2 RNA are found in peri-implantation embryos and teratocarcinoma cells and are particularly abundant in derivatives of the primitive endodermal lineage, but int-2 RNA is not detected during mid- or late gestation or in any normal adult tissues tested. Thus, these two proto-oncogenes, activated during mammary carcinogenesis by the same mechanisms, are normally expressed at different times and places in embryonic and adult mice.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

  1. 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]
  2. Church G. M., Gilbert W. Genomic sequencing. Proc Natl Acad Sci U S A. 1984 Apr;81(7):1991–1995. doi: 10.1073/pnas.81.7.1991. [DOI] [PMC free article] [PubMed] [Google Scholar]
  3. Cleveland D. W., Lopata M. A., MacDonald R. J., Cowan N. J., Rutter W. J., Kirschner M. W. Number and evolutionary conservation of alpha- and beta-tubulin and cytoplasmic beta- and gamma-actin genes using specific cloned cDNA probes. Cell. 1980 May;20(1):95–105. doi: 10.1016/0092-8674(80)90238-x. [DOI] [PubMed] [Google Scholar]
  4. Dickson C., Smith R., Brookes S., Peters G. Tumorigenesis by mouse mammary tumor virus: proviral activation of a cellular gene in the common integration region int-2. Cell. 1984 Jun;37(2):529–536. doi: 10.1016/0092-8674(84)90383-0. [DOI] [PubMed] [Google Scholar]
  5. Fung Y. K., Shackleford G. M., Brown A. M., Sanders G. S., Varmus H. E. Nucleotide sequence and expression in vitro of cDNA derived from mRNA of int-1, a provirally activated mouse mammary oncogene. Mol Cell Biol. 1985 Dec;5(12):3337–3344. doi: 10.1128/mcb.5.12.3337. [DOI] [PMC free article] [PubMed] [Google Scholar]
  6. Grabel L. B., Martin G. R. Tunicamycin reversibly inhibits the terminal differentiation of teratocarcinoma stem cells to endoderm. Dev Biol. 1983 Jan;95(1):115–125. doi: 10.1016/0012-1606(83)90011-8. [DOI] [PubMed] [Google Scholar]
  7. Jakobovits A., Schwab M., Bishop J. M., Martin G. R. Expression of N-myc in teratocarcinoma stem cells and mouse embryos. Nature. 1985 Nov 14;318(6042):188–191. doi: 10.1038/318188a0. [DOI] [PubMed] [Google Scholar]
  8. Joyner A. L., Kornberg T., Coleman K. G., Cox D. R., Martin G. R. Expression during embryogenesis of a mouse gene with sequence homology to the Drosophila engrailed gene. Cell. 1985 Nov;43(1):29–37. doi: 10.1016/0092-8674(85)90009-1. [DOI] [PubMed] [Google Scholar]
  9. Lehman J. M., Speers W. C., Swartzendruber D. E., Pierce G. B. Neoplastic differentiation: characteristics of cell lines derived from a murine teratocarcinoma. J Cell Physiol. 1974 Aug;84(1):13–27. doi: 10.1002/jcp.1040840103. [DOI] [PubMed] [Google Scholar]
  10. Martin G. R., Evans M. J. Differentiation of clonal lines of teratocarcinoma cells: formation of embryoid bodies in vitro. Proc Natl Acad Sci U S A. 1975 Apr;72(4):1441–1445. doi: 10.1073/pnas.72.4.1441. [DOI] [PMC free article] [PubMed] [Google Scholar]
  11. Martin G. R. Teratocarcinomas and mammalian embryogenesis. Science. 1980 Aug 15;209(4458):768–776. doi: 10.1126/science.6250214. [DOI] [PubMed] [Google Scholar]
  12. Martin G. R., Wiley L. M., Damjanov I. The development of cystic embryoid bodies in vitro from clonal teratocarcinoma stem cells. Dev Biol. 1977 Dec;61(2):230–244. doi: 10.1016/0012-1606(77)90294-9. [DOI] [PubMed] [Google Scholar]
  13. Melton D. A., Krieg P. A., Rebagliati M. R., Maniatis T., Zinn K., Green M. R. Efficient in vitro synthesis of biologically active RNA and RNA hybridization probes from plasmids containing a bacteriophage SP6 promoter. Nucleic Acids Res. 1984 Sep 25;12(18):7035–7056. doi: 10.1093/nar/12.18.7035. [DOI] [PMC free article] [PubMed] [Google Scholar]
  14. Moore R., Casey G., Brookes S., Dixon M., Peters G., Dickson C. Sequence, topography and protein coding potential of mouse int-2: a putative oncogene activated by mouse mammary tumour virus. EMBO J. 1986 May;5(5):919–924. doi: 10.1002/j.1460-2075.1986.tb04304.x. [DOI] [PMC free article] [PubMed] [Google Scholar]
  15. Müller R., Slamon D. J., Adamson E. D., Tremblay J. M., Müller D., Cline M. J., Verma I. M. Transcription of c-onc genes c-rasKi and c-fms during mouse development. Mol Cell Biol. 1983 Jun;3(6):1062–1069. doi: 10.1128/mcb.3.6.1062. [DOI] [PMC free article] [PubMed] [Google Scholar]
  16. Müller R., Slamon D. J., Tremblay J. M., Cline M. J., Verma I. M. Differential expression of cellular oncogenes during pre- and postnatal development of the mouse. Nature. 1982 Oct 14;299(5884):640–644. doi: 10.1038/299640a0. [DOI] [PubMed] [Google Scholar]
  17. Müller R., Tremblay J. M., Adamson E. D., Verma I. M. Tissue and cell type-specific expression of two human c-onc genes. Nature. 1983 Aug 4;304(5925):454–456. doi: 10.1038/304454a0. [DOI] [PubMed] [Google Scholar]
  18. Müller R., Verma I. M., Adamson E. D. Expression of c-onc genes: c-fos transcripts accumulate to high levels during development of mouse placenta, yolk sac and amnion. EMBO J. 1983;2(5):679–684. doi: 10.1002/j.1460-2075.1983.tb01484.x. [DOI] [PMC free article] [PubMed] [Google Scholar]
  19. Nusse R., Varmus H. E. Many tumors induced by the mouse mammary tumor virus contain a provirus integrated in the same region of the host genome. Cell. 1982 Nov;31(1):99–109. doi: 10.1016/0092-8674(82)90409-3. [DOI] [PubMed] [Google Scholar]
  20. Nusse R., van Ooyen A., Cox D., Fung Y. K., Varmus H. Mode of proviral activation of a putative mammary oncogene (int-1) on mouse chromosome 15. Nature. 1984 Jan 12;307(5947):131–136. doi: 10.1038/307131a0. [DOI] [PubMed] [Google Scholar]
  21. Peters G., Brookes S., Smith R., Dickson C. Tumorigenesis by mouse mammary tumor virus: evidence for a common region for provirus integration in mammary tumors. Cell. 1983 Jun;33(2):369–377. doi: 10.1016/0092-8674(83)90418-x. [DOI] [PubMed] [Google Scholar]
  22. Peters G., Kozak C., Dickson C. Mouse mammary tumor virus integration regions int-1 and int-2 map on different mouse chromosomes. Mol Cell Biol. 1984 Feb;4(2):375–378. doi: 10.1128/mcb.4.2.375. [DOI] [PMC free article] [PubMed] [Google Scholar]
  23. Peters G., Lee A. E., Dickson C. Concerted activation of two potential proto-oncogenes in carcinomas induced by mouse mammary tumour virus. Nature. 1986 Apr 17;320(6063):628–631. doi: 10.1038/320628a0. [DOI] [PubMed] [Google Scholar]
  24. Ponzetto C., Wolgemuth D. J. Haploid expression of a unique c-abl transcript in the mouse male germ line. Mol Cell Biol. 1985 Jul;5(7):1791–1794. doi: 10.1128/mcb.5.7.1791. [DOI] [PMC free article] [PubMed] [Google Scholar]
  25. Propst F., Vande Woude G. F. Expression of c-mos proto-oncogene transcripts in mouse tissues. Nature. 1985 Jun 6;315(6019):516–518. doi: 10.1038/315516a0. [DOI] [PubMed] [Google Scholar]
  26. Rogel A., Popliker M., Webb C. G., Oren M. p53 cellular tumor antigen: analysis of mRNA levels in normal adult tissues, embryos, and tumors. Mol Cell Biol. 1985 Oct;5(10):2851–2855. doi: 10.1128/mcb.5.10.2851. [DOI] [PMC free article] [PubMed] [Google Scholar]
  27. Simon M. A., Drees B., Kornberg T., Bishop J. M. The nucleotide sequence and the tissue-specific expression of Drosophila c-src. Cell. 1985 Oct;42(3):831–840. doi: 10.1016/0092-8674(85)90279-x. [DOI] [PubMed] [Google Scholar]
  28. Slamon D. J., Cline M. J. Expression of cellular oncogenes during embryonic and fetal development of the mouse. Proc Natl Acad Sci U S A. 1984 Nov;81(22):7141–7145. doi: 10.1073/pnas.81.22.7141. [DOI] [PMC free article] [PubMed] [Google Scholar]
  29. Strickland S., Smith K. K., Marotti K. R. Hormonal induction of differentiation in teratocarcinoma stem cells: generation of parietal endoderm by retinoic acid and dibutyryl cAMP. Cell. 1980 Sep;21(2):347–355. doi: 10.1016/0092-8674(80)90471-7. [DOI] [PubMed] [Google Scholar]
  30. van Ooyen A., Nusse R. Structure and nucleotide sequence of the putative mammary oncogene int-1; proviral insertions leave the protein-encoding domain intact. Cell. 1984 Nov;39(1):233–240. doi: 10.1016/0092-8674(84)90209-5. [DOI] [PubMed] [Google Scholar]

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