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. 1994 Sep;14(9):5858–5869. doi: 10.1128/mcb.14.9.5858

Cell-extracellular matrix interactions can regulate the switch between growth and differentiation in rat hepatocytes: reciprocal expression of C/EBP alpha and immediate-early growth response transcription factors.

B Rana 1, D Mischoulon 1, Y Xie 1, N L Bucher 1, S R Farmer 1
PMCID: PMC359112  PMID: 8065319

Abstract

Previous investigations have shown that culture of freshly isolated hepatocytes under conventional conditions, i.e., on dried rat tail collagen in the presence of growth factors, facilitates cell growth but also causes an extensive down-regulation of most liver-specific functions. This dedifferentiation process can be prevented if the cells are cultured on a reconstituted basement membrane gel matrix derived from the Englebreth-Holm-Swarm mouse sarcoma tumor (EHS gel). To gain insight into the mechanisms regulating this response to extracellular matrix, we are analyzing the activities of two families of transcription factors, C/EBP and AP-1, which control the transcription of hepatic and growth-responsive genes, respectively. We demonstrate that isolation of hepatocytes from the normal quiescent rat liver by collagenase perfusion activates the immediate-early growth response program, as indicated by increased expression of c-jun, junB, c-fos, and c-myc mRNAs. Adhesion of these activated cells to dried rat tail collagen augments the elevated levels of these mRNAs for the initial 1 to 2 h postplating; junB and c-myc mRNA levels then drop steeply, with junB returning to normal quiescence and the c-myc level remaining slightly elevated during the 3-day culture period. Levels of c-jun mRNA and AP-1 DNA binding activity, however, remain elevated from the outset, while C/EBP alpha mRNA expression is down-regulated, resulting in a decrease in the steady-state levels of the 42- and 30-kDa C/EBP alpha polypeptides and C/EBP alpha DNA binding activity. In contrast, C/EBP beta mRNA production remains at near-normal hepatic levels for 5 to 8 days of culture, although its DNA binding activity decreases severalfold during this time. Adhesion of hepatocytes to the EHS gel for the same period of time dramatically alters this program: it arrests growth and inhibits AP-1 DNA binding activity and the expression of c-jun, junB, and c-myc mRNAs, but, in addition, it restores C/EBP alpha mRNA and protein as well as C/EBP alpha and C/EBP beta DNA binding activities to the abundant levels present in freshly isolated hepatocytes. These changes are not due merely to growth inhibition, because suppression of hepatocyte proliferation on collagen by epidermal growth factor starvation or addition of transforming growth factor beta does not inhibit AP-1 activity or restore C/EBP alpha DNA binding activity to normal hepatic levels. These data suggest that expression of the normal hepatic phenotype requires that hepatocytes exist in a G0 state of growth arrest, facilitated here by adhesion of cells to the EHS gel, in order to express high levels of hepatic transcription factors such as C/EBP alpha.

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Selected References

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

  1. Alam T., An M. R., Papaconstantinou J. Differential expression of three C/EBP isoforms in multiple tissues during the acute phase response. J Biol Chem. 1992 Mar 15;267(8):5021–5024. [PubMed] [Google Scholar]
  2. Ben-Ze'ev A., Robinson G. S., Bucher N. L., Farmer S. R. Cell-cell and cell-matrix interactions differentially regulate the expression of hepatic and cytoskeletal genes in primary cultures of rat hepatocytes. Proc Natl Acad Sci U S A. 1988 Apr;85(7):2161–2165. doi: 10.1073/pnas.85.7.2161. [DOI] [PMC free article] [PubMed] [Google Scholar]
  3. Birkenmeier E. H., Gwynn B., Howard S., Jerry J., Gordon J. I., Landschulz W. H., McKnight S. L. Tissue-specific expression, developmental regulation, and genetic mapping of the gene encoding CCAAT/enhancer binding protein. Genes Dev. 1989 Aug;3(8):1146–1156. doi: 10.1101/gad.3.8.1146. [DOI] [PubMed] [Google Scholar]
  4. Bissell D. M., Arenson D. M., Maher J. J., Roll F. J. Support of cultured hepatocytes by a laminin-rich gel. Evidence for a functionally significant subendothelial matrix in normal rat liver. J Clin Invest. 1987 Mar;79(3):801–812. doi: 10.1172/JCI112887. [DOI] [PMC free article] [PubMed] [Google Scholar]
  5. Bissell D. M., Guzelian P. S. Phenotypic stability of adult rat hepatocytes in primary monolayer culture. Ann N Y Acad Sci. 1980;349:85–98. doi: 10.1111/j.1749-6632.1980.tb29518.x. [DOI] [PubMed] [Google Scholar]
  6. Bond J. F., Farmer S. R. Regulation of tubulin and actin mRNA production in rat brain: expression of a new beta-tubulin mRNA with development. Mol Cell Biol. 1983 Aug;3(8):1333–1342. doi: 10.1128/mcb.3.8.1333. [DOI] [PMC free article] [PubMed] [Google Scholar]
  7. Bucher N. L. Liver regeneration: an overview. J Gastroenterol Hepatol. 1991 Nov-Dec;6(6):615–624. doi: 10.1111/j.1440-1746.1991.tb00921.x. [DOI] [PubMed] [Google Scholar]
  8. Bucher N. L., Robinson G. S., Farmer S. R. Effects of extracellular matrix on hepatocyte growth and gene expression: implications for hepatic regeneration and the repair of liver injury. Semin Liver Dis. 1990 Feb;10(1):11–19. doi: 10.1055/s-2008-1040453. [DOI] [PubMed] [Google Scholar]
  9. Cao Z., Umek R. M., McKnight S. L. Regulated expression of three C/EBP isoforms during adipose conversion of 3T3-L1 cells. Genes Dev. 1991 Sep;5(9):1538–1552. doi: 10.1101/gad.5.9.1538. [DOI] [PubMed] [Google Scholar]
  10. Caron J. M. Induction of albumin gene transcription in hepatocytes by extracellular matrix proteins. Mol Cell Biol. 1990 Mar;10(3):1239–1243. doi: 10.1128/mcb.10.3.1239. [DOI] [PMC free article] [PubMed] [Google Scholar]
  11. Carr B. I., Hayashi I., Branum E. L., Moses H. L. Inhibition of DNA synthesis in rat hepatocytes by platelet-derived type beta transforming growth factor. Cancer Res. 1986 May;46(5):2330–2334. [PubMed] [Google Scholar]
  12. Chomczynski P., Sacchi N. Single-step method of RNA isolation by acid guanidinium thiocyanate-phenol-chloroform extraction. Anal Biochem. 1987 Apr;162(1):156–159. doi: 10.1006/abio.1987.9999. [DOI] [PubMed] [Google Scholar]
  13. Christy R. J., Kaestner K. H., Geiman D. E., Lane M. D. CCAAT/enhancer binding protein gene promoter: binding of nuclear factors during differentiation of 3T3-L1 preadipocytes. Proc Natl Acad Sci U S A. 1991 Mar 15;88(6):2593–2597. doi: 10.1073/pnas.88.6.2593. [DOI] [PMC free article] [PubMed] [Google Scholar]
  14. Clayton D. F., Darnell J. E., Jr Changes in liver-specific compared to common gene transcription during primary culture of mouse hepatocytes. Mol Cell Biol. 1983 Sep;3(9):1552–1561. doi: 10.1128/mcb.3.9.1552. [DOI] [PMC free article] [PubMed] [Google Scholar]
  15. Clayton D. F., Harrelson A. L., Darnell J. E., Jr Dependence of liver-specific transcription on tissue organization. Mol Cell Biol. 1985 Oct;5(10):2623–2632. doi: 10.1128/mcb.5.10.2623. [DOI] [PMC free article] [PubMed] [Google Scholar]
  16. Curran T., Peters G., Van Beveren C., Teich N. M., Verma I. M. FBJ murine osteosarcoma virus: identification and molecular cloning of biologically active proviral DNA. J Virol. 1982 Nov;44(2):674–682. doi: 10.1128/jvi.44.2.674-682.1982. [DOI] [PMC free article] [PubMed] [Google Scholar]
  17. Dean M., Kent R. B., Sonenshein G. E. Transcriptional activation of immunoglobulin alpha heavy-chain genes by translocation of the c-myc oncogene. 1983 Sep 29-Oct 5Nature. 305(5933):443–446. doi: 10.1038/305443a0. [DOI] [PubMed] [Google Scholar]
  18. Descombes P., Chojkier M., Lichtsteiner S., Falvey E., Schibler U. LAP, a novel member of the C/EBP gene family, encodes a liver-enriched transcriptional activator protein. Genes Dev. 1990 Sep;4(9):1541–1551. doi: 10.1101/gad.4.9.1541. [DOI] [PubMed] [Google Scholar]
  19. DiPersio C. M., Jackson D. A., Zaret K. S. The extracellular matrix coordinately modulates liver transcription factors and hepatocyte morphology. Mol Cell Biol. 1991 Sep;11(9):4405–4414. doi: 10.1128/mcb.11.9.4405. [DOI] [PMC free article] [PubMed] [Google Scholar]
  20. Dunn J. C., Tompkins R. G., Yarmush M. L. Hepatocytes in collagen sandwich: evidence for transcriptional and translational regulation. J Cell Biol. 1992 Feb;116(4):1043–1053. doi: 10.1083/jcb.116.4.1043. [DOI] [PMC free article] [PubMed] [Google Scholar]
  21. Dunn J. C., Tompkins R. G., Yarmush M. L. Long-term in vitro function of adult hepatocytes in a collagen sandwich configuration. Biotechnol Prog. 1991 May-Jun;7(3):237–245. doi: 10.1021/bp00009a007. [DOI] [PubMed] [Google Scholar]
  22. Dunn J. C., Yarmush M. L., Koebe H. G., Tompkins R. G. Hepatocyte function and extracellular matrix geometry: long-term culture in a sandwich configuration. FASEB J. 1989 Feb;3(2):174–177. doi: 10.1096/fasebj.3.2.2914628. [DOI] [PubMed] [Google Scholar]
  23. Flodby P., Antonson P., Barlow C., Blanck A., Porsch-Hällström I., Xanthopoulos K. G. Differential patterns of expression of three C/EBP isoforms, HNF-1, and HNF-4 after partial hepatectomy in rats. Exp Cell Res. 1993 Sep;208(1):248–256. doi: 10.1006/excr.1993.1244. [DOI] [PubMed] [Google Scholar]
  24. Freytag S. O., Geddes T. J. Reciprocal regulation of adipogenesis by Myc and C/EBP alpha. Science. 1992 Apr 17;256(5055):379–382. doi: 10.1126/science.256.5055.379. [DOI] [PubMed] [Google Scholar]
  25. Friedman A. D., Landschulz W. H., McKnight S. L. CCAAT/enhancer binding protein activates the promoter of the serum albumin gene in cultured hepatoma cells. Genes Dev. 1989 Sep;3(9):1314–1322. doi: 10.1101/gad.3.9.1314. [DOI] [PubMed] [Google Scholar]
  26. Friedman J. M., Chung E. Y., Darnell J. E., Jr Gene expression during liver regeneration. J Mol Biol. 1984 Oct 15;179(1):37–53. doi: 10.1016/0022-2836(84)90305-x. [DOI] [PubMed] [Google Scholar]
  27. Gentz R., Rauscher F. J., 3rd, Abate C., Curran T. Parallel association of Fos and Jun leucine zippers juxtaposes DNA binding domains. Science. 1989 Mar 31;243(4899):1695–1699. doi: 10.1126/science.2494702. [DOI] [PubMed] [Google Scholar]
  28. Goulet F., Normand C., Morin O. Cellular interactions promote tissue-specific function, biomatrix deposition and junctional communication of primary cultured hepatocytes. Hepatology. 1988 Sep-Oct;8(5):1010–1018. doi: 10.1002/hep.1840080506. [DOI] [PubMed] [Google Scholar]
  29. Greenberg M. E., Ziff E. B. Stimulation of 3T3 cells induces transcription of the c-fos proto-oncogene. Nature. 1984 Oct 4;311(5985):433–438. doi: 10.1038/311433a0. [DOI] [PubMed] [Google Scholar]
  30. Hsu J. C., Laz T., Mohn K. L., Taub R. Identification of LRF-1, a leucine-zipper protein that is rapidly and highly induced in regenerating liver. Proc Natl Acad Sci U S A. 1991 May 1;88(9):3511–3515. doi: 10.1073/pnas.88.9.3511. [DOI] [PMC free article] [PubMed] [Google Scholar]
  31. Kaestner K. H., Christy R. J., Lane M. D. Mouse insulin-responsive glucose transporter gene: characterization of the gene and trans-activation by the CCAAT/enhancer binding protein. Proc Natl Acad Sci U S A. 1990 Jan;87(1):251–255. doi: 10.1073/pnas.87.1.251. [DOI] [PMC free article] [PubMed] [Google Scholar]
  32. Koff A., Ohtsuki M., Polyak K., Roberts J. M., Massagué J. Negative regulation of G1 in mammalian cells: inhibition of cyclin E-dependent kinase by TGF-beta. Science. 1993 Apr 23;260(5107):536–539. doi: 10.1126/science.8475385. [DOI] [PubMed] [Google Scholar]
  33. Kost D. P., Michalopoulos G. K. Effect of epidermal growth factor on the expression of protooncogenes c-myc and c-Ha-ras in short-term primary hepatocyte culture. J Cell Physiol. 1990 Jul;144(1):122–127. doi: 10.1002/jcp.1041440116. [DOI] [PubMed] [Google Scholar]
  34. Kouzarides T., Ziff E. The role of the leucine zipper in the fos-jun interaction. Nature. 1988 Dec 15;336(6200):646–651. doi: 10.1038/336646a0. [DOI] [PubMed] [Google Scholar]
  35. Landschulz W. H., Johnson P. F., Adashi E. Y., Graves B. J., McKnight S. L. Isolation of a recombinant copy of the gene encoding C/EBP. Genes Dev. 1988 Jul;2(7):786–800. doi: 10.1101/gad.2.7.786. [DOI] [PubMed] [Google Scholar]
  36. Lee J., Morgan J. R., Tompkins R. G., Yarmush M. L. Proline-mediated enhancement of hepatocyte function in a collagen gel sandwich culture configuration. FASEB J. 1993 Apr 1;7(6):586–591. doi: 10.1096/fasebj.7.6.8472895. [DOI] [PubMed] [Google Scholar]
  37. Legraverend C., Antonson P., Flodby P., Xanthopoulos K. G. High level activity of the mouse CCAAT/enhancer binding protein (C/EBP alpha) gene promoter involves autoregulation and several ubiquitous transcription factors. Nucleic Acids Res. 1993 Apr 25;21(8):1735–1742. doi: 10.1093/nar/21.8.1735. [DOI] [PMC free article] [PubMed] [Google Scholar]
  38. Lin F. T., MacDougald O. A., Diehl A. M., Lane M. D. A 30-kDa alternative translation product of the CCAAT/enhancer binding protein alpha message: transcriptional activator lacking antimitotic activity. Proc Natl Acad Sci U S A. 1993 Oct 15;90(20):9606–9610. doi: 10.1073/pnas.90.20.9606. [DOI] [PMC free article] [PubMed] [Google Scholar]
  39. McGowan J. A., Strain A. J., Bucher N. L. DNA synthesis in primary cultures of adult rat hepatocytes in a defined medium: effects of epidermal growth factor, insulin, glucagon, and cyclic-AMP. J Cell Physiol. 1981 Sep;108(3):353–363. doi: 10.1002/jcp.1041080309. [DOI] [PubMed] [Google Scholar]
  40. McMahon J. B., Richards W. L., del Campo A. A., Song M. K., Thorgeirsson S. S. Differential effects of transforming growth factor-beta on proliferation of normal and malignant rat liver epithelial cells in culture. Cancer Res. 1986 Sep;46(9):4665–4671. [PubMed] [Google Scholar]
  41. Mesnil M., Fraslin J. M., Piccoli C., Yamasaki H., Guguen-Guillouzo C. Cell contact but not junctional communication (dye coupling) with biliary epithelial cells is required for hepatocytes to maintain differentiated functions. Exp Cell Res. 1987 Dec;173(2):524–533. doi: 10.1016/0014-4827(87)90292-8. [DOI] [PubMed] [Google Scholar]
  42. Michalopoulos G. K. Liver regeneration: molecular mechanisms of growth control. FASEB J. 1990 Feb 1;4(2):176–187. [PubMed] [Google Scholar]
  43. Mischoulon D., Rana B., Bucher N. L., Farmer S. R. Growth-dependent inhibition of CCAAT enhancer-binding protein (C/EBP alpha) gene expression during hepatocyte proliferation in the regenerating liver and in culture. Mol Cell Biol. 1992 Jun;12(6):2553–2560. doi: 10.1128/mcb.12.6.2553. [DOI] [PMC free article] [PubMed] [Google Scholar]
  44. Mohn K. L., Laz T. M., Hsu J. C., Melby A. E., Bravo R., Taub R. The immediate-early growth response in regenerating liver and insulin-stimulated H-35 cells: comparison with serum-stimulated 3T3 cells and identification of 41 novel immediate-early genes. Mol Cell Biol. 1991 Jan;11(1):381–390. doi: 10.1128/mcb.11.1.381. [DOI] [PMC free article] [PubMed] [Google Scholar]
  45. Mooney D., Hansen L., Vacanti J., Langer R., Farmer S., Ingber D. Switching from differentiation to growth in hepatocytes: control by extracellular matrix. J Cell Physiol. 1992 Jun;151(3):497–505. doi: 10.1002/jcp.1041510308. [DOI] [PubMed] [Google Scholar]
  46. Nakamura T., Tomita Y., Hirai R., Yamaoka K., Kaji K., Ichihara A. Inhibitory effect of transforming growth factor-beta on DNA synthesis of adult rat hepatocytes in primary culture. Biochem Biophys Res Commun. 1985 Dec 31;133(3):1042–1050. doi: 10.1016/0006-291x(85)91241-0. [DOI] [PubMed] [Google Scholar]
  47. Orkin R. W., Gehron P., McGoodwin E. B., Martin G. R., Valentine T., Swarm R. A murine tumor producing a matrix of basement membrane. J Exp Med. 1977 Jan 1;145(1):204–220. doi: 10.1084/jem.145.1.204. [DOI] [PMC free article] [PubMed] [Google Scholar]
  48. Ryder K., Lau L. F., Nathans D. A gene activated by growth factors is related to the oncogene v-jun. Proc Natl Acad Sci U S A. 1988 Mar;85(5):1487–1491. doi: 10.1073/pnas.85.5.1487. [DOI] [PMC free article] [PubMed] [Google Scholar]
  49. Schuetz E. G., Li D., Omiecinski C. J., Muller-Eberhard U., Kleinman H. K., Elswick B., Guzelian P. S. Regulation of gene expression in adult rat hepatocytes cultured on a basement membrane matrix. J Cell Physiol. 1988 Mar;134(3):309–323. doi: 10.1002/jcp.1041340302. [DOI] [PubMed] [Google Scholar]
  50. Seglen P. O. Preparation of isolated rat liver cells. Methods Cell Biol. 1976;13:29–83. doi: 10.1016/s0091-679x(08)61797-5. [DOI] [PubMed] [Google Scholar]
  51. Singer P. A., Trevor K., Oshima R. G. Molecular cloning and characterization of the Endo B cytokeratin expressed in preimplantation mouse embryos. J Biol Chem. 1986 Jan 15;261(2):538–547. [PubMed] [Google Scholar]
  52. Turner R., Tjian R. Leucine repeats and an adjacent DNA binding domain mediate the formation of functional cFos-cJun heterodimers. Science. 1989 Mar 31;243(4899):1689–1694. doi: 10.1126/science.2494701. [DOI] [PubMed] [Google Scholar]
  53. Umek R. M., Friedman A. D., McKnight S. L. CCAAT-enhancer binding protein: a component of a differentiation switch. Science. 1991 Jan 18;251(4991):288–292. doi: 10.1126/science.1987644. [DOI] [PubMed] [Google Scholar]
  54. Vasseur-Cognet M., Lane M. D. Trans-acting factors involved in adipogenic differentiation. Curr Opin Genet Dev. 1993 Apr;3(2):238–245. doi: 10.1016/0959-437x(93)90029-o. [DOI] [PubMed] [Google Scholar]
  55. Xanthopoulos K. G., Mirkovitch J., Decker T., Kuo C. F., Darnell J. E., Jr Cell-specific transcriptional control of the mouse DNA-binding protein mC/EBP. Proc Natl Acad Sci U S A. 1989 Jun;86(11):4117–4121. doi: 10.1073/pnas.86.11.4117. [DOI] [PMC free article] [PubMed] [Google Scholar]
  56. Xanthopoulos K. G., Prezioso V. R., Chen W. S., Sladek F. M., Cortese R., Darnell J. E., Jr The different tissue transcription patterns of genes for HNF-1, C/EBP, HNF-3, and HNF-4, protein factors that govern liver-specific transcription. Proc Natl Acad Sci U S A. 1991 May 1;88(9):3807–3811. doi: 10.1073/pnas.88.9.3807. [DOI] [PMC free article] [PubMed] [Google Scholar]

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