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. 1988 Oct;7(10):3093–3098. doi: 10.1002/j.1460-2075.1988.tb03175.x

Both immunoglobulin promoter and enhancer sequences are targets for suppression in myeloma-fibroblast hybrid cells.

S Junker 1, V Nielsen 1, P Matthias 1, D Picard 1
PMCID: PMC454698  PMID: 3141146

Abstract

When immunoglobulin (Ig)-producing B cells are fused with fibroblastic cells, expression of Igs is suppressed by a mechanism that selectively abolishes transcription of Ig genes. The suppression is also maintained in proliferating hybrids. We have used gene transfer followed by cell fusion to study this phenomenon further. Here we report that expression of a rearranged Ig heavy chain gene, stably integrated into a myeloma genome, is completely suppressed upon fusion with fibroblasts by a mechanism that is equally active on the endogenous myeloma lambda light chain gene. To define regulatory sequences within the Ig transcriptional unit that are involved in this down-regulation, we examined the transcriptional contributions of the IgH chain gene enhancer and the kappa light chain gene promoter individually by linking them to a heterologous reporter gene. Mouse myeloma cells were stably transformed with such test constructs and subsequently fused with mouse fibroblasts. To avoid any significant loss of chromosomes, hybrid cells were isolated shortly after fusion by fluorescence-activated cell sorting, and proliferating hybrids were harvested within 2-3 weeks. On the basis of RNase protection mapping of cytoplasmic RNA, and of nuclear run-on assays we showed that both the kappa light chain promoter and the IgH chain enhancer contain regulatory information that is made redundant or is suppressed in the hybrid environment.

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Selected References

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

  1. Augereau P., Chambon P. The mouse immunoglobulin heavy-chain enhancer: effect on transcription in vitro and binding of proteins present in HeLa and lymphoid B cell extracts. EMBO J. 1986 Aug;5(8):1791–1797. doi: 10.1002/j.1460-2075.1986.tb04428.x. [DOI] [PMC free article] [PubMed] [Google Scholar]
  2. Banerji J., Olson L., Schaffner W. A lymphocyte-specific cellular enhancer is located downstream of the joining region in immunoglobulin heavy chain genes. Cell. 1983 Jul;33(3):729–740. doi: 10.1016/0092-8674(83)90015-6. [DOI] [PubMed] [Google Scholar]
  3. Bradshaw H. D., Jr, Deininger P. L. Human thymidine kinase gene: molecular cloning and nucleotide sequence of a cDNA expressible in mammalian cells. Mol Cell Biol. 1984 Nov;4(11):2316–2320. doi: 10.1128/mcb.4.11.2316. [DOI] [PMC free article] [PubMed] [Google Scholar]
  4. Coffino P., Knowles B., Nathenson S. G., Scharff M. D. Suppression of immunoglobulin synthesis by cellular hybridization. Nat New Biol. 1971 May 19;231(20):87–90. doi: 10.1038/newbio231087a0. [DOI] [PubMed] [Google Scholar]
  5. Dreyfus M., Doyen N., Rougeon F. The conserved decanucleotide from the immunoglobulin heavy chain promoter induces a very high transcriptional activity in B-cells when introduced into an heterologous promoter. EMBO J. 1987 Jun;6(6):1685–1690. doi: 10.1002/j.1460-2075.1987.tb02418.x. [DOI] [PMC free article] [PubMed] [Google Scholar]
  6. Edwards S. A., Adamson E. D. Induction of c-fos and AFP expression in a differentiating teratocarcinoma cell line. Exp Cell Res. 1986 Aug;165(2):473–480. doi: 10.1016/0014-4827(86)90600-2. [DOI] [PubMed] [Google Scholar]
  7. Garcia J. V., Bich-Thuy L. T., Stafford J., Queen C. Synergism between immunoglobulin enhancers and promoters. Nature. 1986 Jul 24;322(6077):383–385. doi: 10.1038/322383a0. [DOI] [PubMed] [Google Scholar]
  8. Gerster T., Matthias P., Thali M., Jiricny J., Schaffner W. Cell type-specificity elements of the immunoglobulin heavy chain gene enhancer. EMBO J. 1987 May;6(5):1323–1330. doi: 10.1002/j.1460-2075.1987.tb02371.x. [DOI] [PMC free article] [PubMed] [Google Scholar]
  9. Gerster T., Picard D., Schaffner W. During B-cell differentiation enhancer activity and transcription rate of immunoglobulin heavy chain genes are high before mRNA accumulation. Cell. 1986 Apr 11;45(1):45–52. doi: 10.1016/0092-8674(86)90536-2. [DOI] [PubMed] [Google Scholar]
  10. Gillies S. D., Morrison S. L., Oi V. T., Tonegawa S. A tissue-specific transcription enhancer element is located in the major intron of a rearranged immunoglobulin heavy chain gene. Cell. 1983 Jul;33(3):717–728. doi: 10.1016/0092-8674(83)90014-4. [DOI] [PubMed] [Google Scholar]
  11. Greenberg A., Ber R., Kra-Oz Z., Laskov R. Extinction of expression of immunoglobulin genes in myeloma X fibroblast somatic cell hybrids. Mol Cell Biol. 1987 Feb;7(2):936–939. doi: 10.1128/mcb.7.2.936. [DOI] [PMC free article] [PubMed] [Google Scholar]
  12. Grosschedl R., Baltimore D. Cell-type specificity of immunoglobulin gene expression is regulated by at least three DNA sequence elements. Cell. 1985 Jul;41(3):885–897. doi: 10.1016/s0092-8674(85)80069-6. [DOI] [PubMed] [Google Scholar]
  13. Imler J. L., Lemaire C., Wasylyk C., Wasylyk B. Negative regulation contributes to tissue specificity of the immunoglobulin heavy-chain enhancer. Mol Cell Biol. 1987 Jul;7(7):2558–2567. doi: 10.1128/mcb.7.7.2558. [DOI] [PMC free article] [PubMed] [Google Scholar]
  14. Ishihara T., Kudo A., Watanabe T. Induction of immunoglobulin gene expression in mouse fibroblasts by cycloheximide treatment. J Exp Med. 1984 Dec 1;160(6):1937–1942. doi: 10.1084/jem.160.6.1937. [DOI] [PMC free article] [PubMed] [Google Scholar]
  15. Junker S., Pedersen S. A universally applicable method of isolating somatic cell hybrids by two-colour flow sorting. Biochem Biophys Res Commun. 1981 Oct 15;102(3):977–984. doi: 10.1016/0006-291x(81)91634-x. [DOI] [PubMed] [Google Scholar]
  16. Junker S., Pedersen S. Time course of arrest of immunoglobulin expression in heterokaryons and early hybrids of human lymphoma cells and mouse fibroblasts. A study of transcriptional and translational events. Exp Cell Res. 1985 Jun;158(2):349–359. doi: 10.1016/0014-4827(85)90460-4. [DOI] [PubMed] [Google Scholar]
  17. Junker S. Phenotype and hybrids between lymphoid cells and rat hepatoma cells. Exp Cell Res. 1982 May;139(1):51–61. doi: 10.1016/0014-4827(82)90317-2. [DOI] [PubMed] [Google Scholar]
  18. KIT S., DUBBS D. R., PIEKARSKI L. J., HSU T. C. DELETION OF THYMIDINE KINASE ACTIVITY FROM L CELLS RESISTANT TO BROMODEOXYURIDINE. Exp Cell Res. 1963 Aug;31:297–312. doi: 10.1016/0014-4827(63)90007-7. [DOI] [PubMed] [Google Scholar]
  19. Kadesch T., Zervos P., Ruezinsky D. Functional analysis of the murine IgH enhancer: evidence for negative control of cell-type specificity. Nucleic Acids Res. 1986 Oct 24;14(20):8209–8221. doi: 10.1093/nar/14.20.8209. [DOI] [PMC free article] [PubMed] [Google Scholar]
  20. Kelley D. E., Perry R. P. Transcriptional and posttranscriptional control of immunoglobulin mRNA production during B lymphocyte development. Nucleic Acids Res. 1986 Jul 11;14(13):5431–5447. doi: 10.1093/nar/14.13.5431. [DOI] [PMC free article] [PubMed] [Google Scholar]
  21. Kiledjian M., Su L. K., Kadesch T. Identification and characterization of two functional domains within the murine heavy-chain enhancer. Mol Cell Biol. 1988 Jan;8(1):145–152. doi: 10.1128/mcb.8.1.145. [DOI] [PMC free article] [PubMed] [Google Scholar]
  22. Kimura G., Dulbecco R. Isolation and characterization of temperature-sensitive mutants of simian virus 40. Virology. 1972 Aug;49(2):394–403. doi: 10.1016/0042-6822(72)90492-8. [DOI] [PubMed] [Google Scholar]
  23. Köhler G., Milstein C. Continuous cultures of fused cells secreting antibody of predefined specificity. Nature. 1975 Aug 7;256(5517):495–497. doi: 10.1038/256495a0. [DOI] [PubMed] [Google Scholar]
  24. Landolfi N. F., Capra J. D., Tucker P. W. Interaction of cell-type-specific nuclear proteins with immunoglobulin VH promoter region sequences. Nature. 1986 Oct 9;323(6088):548–551. doi: 10.1038/323548a0. [DOI] [PubMed] [Google Scholar]
  25. Lenardo M., Pierce J. W., Baltimore D. Protein-binding sites in Ig gene enhancers determine transcriptional activity and inducibility. Science. 1987 Jun 19;236(4808):1573–1577. doi: 10.1126/science.3109035. [DOI] [PubMed] [Google Scholar]
  26. Maniatis T., Goodbourn S., Fischer J. A. Regulation of inducible and tissue-specific gene expression. Science. 1987 Jun 5;236(4806):1237–1245. doi: 10.1126/science.3296191. [DOI] [PubMed] [Google Scholar]
  27. Maniatis T., Hardison R. C., Lacy E., Lauer J., O'Connell C., Quon D., Sim G. K., Efstratiadis A. The isolation of structural genes from libraries of eucaryotic DNA. Cell. 1978 Oct;15(2):687–701. doi: 10.1016/0092-8674(78)90036-3. [DOI] [PubMed] [Google Scholar]
  28. Mason J. O., Williams G. T., Neuberger M. S. Transcription cell type specificity is conferred by an immunoglobulin VH gene promoter that includes a functional consensus sequence. Cell. 1985 Jun;41(2):479–487. doi: 10.1016/s0092-8674(85)80021-0. [DOI] [PubMed] [Google Scholar]
  29. McKnight S., Tjian R. Transcriptional selectivity of viral genes in mammalian cells. Cell. 1986 Sep 12;46(6):795–805. doi: 10.1016/0092-8674(86)90061-9. [DOI] [PubMed] [Google Scholar]
  30. 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]
  31. Meneguzzi G., Binétruy B., Grisoni M., Cuzin F. Plasmidial maintenance in rodent fibroblasts of a BPV1-pBR322 shuttle vector without immediately apparent oncogenic transformation of the recipient cells. EMBO J. 1984 Feb;3(2):365–371. doi: 10.1002/j.1460-2075.1984.tb01813.x. [DOI] [PMC free article] [PubMed] [Google Scholar]
  32. Neuberger M. S. Expression and regulation of immunoglobulin heavy chain gene transfected into lymphoid cells. EMBO J. 1983;2(8):1373–1378. doi: 10.1002/j.1460-2075.1983.tb01594.x. [DOI] [PMC free article] [PubMed] [Google Scholar]
  33. Nishikura K., ar-Rushdi A., Erikson J., DeJesus E., Dugan D., Croce C. M. Repression of rearranged mu gene and translocated c-myc in mouse 3T3 cells X Burkitt lymphoma cell hybrids. Science. 1984 Apr 27;224(4647):399–402. doi: 10.1126/science.6424234. [DOI] [PubMed] [Google Scholar]
  34. Periman P. IgG synthesis in hybrid cells from an antibody-producing mouse myeloma and an L cell substrain. Nature. 1970 Dec 12;228(5276):1086–1087. doi: 10.1038/2281086a0. [DOI] [PubMed] [Google Scholar]
  35. Picard D., Schaffner W. A lymphocyte-specific enhancer in the mouse immunoglobulin kappa gene. Nature. 1984 Jan 5;307(5946):80–82. doi: 10.1038/307080a0. [DOI] [PubMed] [Google Scholar]
  36. Picard D., Schaffner W. Cell-type preference of immunoglobulin kappa and lambda gene promoters. EMBO J. 1985 Nov;4(11):2831–2838. doi: 10.1002/j.1460-2075.1985.tb04011.x. [DOI] [PMC free article] [PubMed] [Google Scholar]
  37. Picard D., Schaffner W. Unrearranged immunoglobulin lambda variable region is transcribed in kappa-producing myelomas. EMBO J. 1984 Dec 1;3(12):3031–3035. doi: 10.1002/j.1460-2075.1984.tb02250.x. [DOI] [PMC free article] [PubMed] [Google Scholar]
  38. Queen C., Baltimore D. Immunoglobulin gene transcription is activated by downstream sequence elements. Cell. 1983 Jul;33(3):741–748. doi: 10.1016/0092-8674(83)90016-8. [DOI] [PubMed] [Google Scholar]
  39. Queen C., Stafford J. Fine mapping of an immunoglobulin gene activator. Mol Cell Biol. 1984 Jun;4(6):1042–1049. doi: 10.1128/mcb.4.6.1042. [DOI] [PMC free article] [PubMed] [Google Scholar]
  40. Scheidereit C., Heguy A., Roeder R. G. Identification and purification of a human lymphoid-specific octamer-binding protein (OTF-2) that activates transcription of an immunoglobulin promoter in vitro. Cell. 1987 Dec 4;51(5):783–793. doi: 10.1016/0092-8674(87)90101-2. [DOI] [PubMed] [Google Scholar]
  41. Sen R., Baltimore D. Inducibility of kappa immunoglobulin enhancer-binding protein Nf-kappa B by a posttranslational mechanism. Cell. 1986 Dec 26;47(6):921–928. doi: 10.1016/0092-8674(86)90807-x. [DOI] [PubMed] [Google Scholar]
  42. Sen R., Baltimore D. Multiple nuclear factors interact with the immunoglobulin enhancer sequences. Cell. 1986 Aug 29;46(5):705–716. doi: 10.1016/0092-8674(86)90346-6. [DOI] [PubMed] [Google Scholar]
  43. Staudt L. M., Singh H., Sen R., Wirth T., Sharp P. A., Baltimore D. A lymphoid-specific protein binding to the octamer motif of immunoglobulin genes. Nature. 1986 Oct 16;323(6089):640–643. doi: 10.1038/323640a0. [DOI] [PubMed] [Google Scholar]
  44. Wasylyk C., Wasylyk B. The immunoglobulin heavy-chain B-lymphocyte enhancer efficiently stimulates transcription in non-lymphoid cells. EMBO J. 1986 Mar;5(3):553–560. doi: 10.1002/j.1460-2075.1986.tb04246.x. [DOI] [PMC free article] [PubMed] [Google Scholar]
  45. Weinberger J., Jat P. S., Sharp P. A. Localization of a repressive sequence contributing to B-cell specificity in the immunoglobulin heavy-chain enhancer. Mol Cell Biol. 1988 Feb;8(2):988–992. doi: 10.1128/mcb.8.2.988. [DOI] [PMC free article] [PubMed] [Google Scholar]
  46. Wirth T., Staudt L., Baltimore D. An octamer oligonucleotide upstream of a TATA motif is sufficient for lymphoid-specific promoter activity. Nature. 1987 Sep 10;329(6135):174–178. doi: 10.1038/329174a0. [DOI] [PubMed] [Google Scholar]
  47. Zeuthen J., Nilsson K. Hybridization of a human myeloma permanent cell line with mouse cells. Cell Differ. 1976 Mar;4(6):355–368. doi: 10.1016/0045-6039(76)90024-5. [DOI] [PubMed] [Google Scholar]
  48. van Ooyen A., van den Berg J., Mantei N., Weissmann C. Comparison of total sequence of a cloned rabbit beta-globin gene and its flanking regions with a homologous mouse sequence. Science. 1979 Oct 19;206(4416):337–344. doi: 10.1126/science.482942. [DOI] [PubMed] [Google Scholar]

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