Abstract
Epithelial-mesenchymal interactions control epidermal growth and differentiation, but little is known about the mechanisms of this interaction. We have examined the effects of human dermal microvascular endothelial cells (DMEC) and fibroblasts on keratinocytes in conventional (feeder layer) and organotypic cocultures (lifted collagen gels) and demonstrated the induction of paracrine growth factor gene expression. Clonal keratinocyte growth was similarly stimulated in cocultures with irradiated DMEC and fibroblasts as feeder cells. This effect is most probably caused by induction of growth factor expression in cocultured dermal cells. Keratinocytes stimulated mRNA levels for KGF and IL-6 in both mesenchymal cell types and GM-CSF in fibroblasts. The feeder effect could not be replaced by conditioned media or addition of isolated growth factors. In organotypic cocultures with keratinocytes growing on collagen gels (repopulated with dermal cells), a virtually normal epidermis was formed within 7 to 10 d. Keratinocyte proliferation was drastically stimulated by dermal cells (histone 3 mRNA expression and BrdU labeling) which continued to proliferate as well in the gel. Expression of all typical differentiation markers was provoked in the reconstituted epithelium, though with different localization as compared to normal epidermis. Keratins K1 and K10 appeared coexpressed but delayed, reflecting conditions in epidermal hyperplasia. Keratin localization and proliferation were normalized under in vivo conditions, i.e., in surface transplants on nude mice. From these data it is concluded that epidermal homeostasis is in part controlled by complex reciprocally induced paracrine acting factors in concert with cell-cell interactions and extracellular matrix influences.
Full Text
The Full Text of this article is available as a PDF (3.5 MB).
Selected References
These references are in PubMed. This may not be the complete list of references from this article.
- Asselineau D., Bernard B. A., Bailly C., Darmon M. Retinoic acid improves epidermal morphogenesis. Dev Biol. 1989 Jun;133(2):322–335. doi: 10.1016/0012-1606(89)90037-7. [DOI] [PubMed] [Google Scholar]
- Asselineau D., Bernhard B., Bailly C., Darmon M. Epidermal morphogenesis and induction of the 67 kD keratin polypeptide by culture of human keratinocytes at the liquid-air interface. Exp Cell Res. 1985 Aug;159(2):536–539. doi: 10.1016/s0014-4827(85)80027-6. [DOI] [PubMed] [Google Scholar]
- Bell E., Ivarsson B., Merrill C. Production of a tissue-like structure by contraction of collagen lattices by human fibroblasts of different proliferative potential in vitro. Proc Natl Acad Sci U S A. 1979 Mar;76(3):1274–1278. doi: 10.1073/pnas.76.3.1274. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Bernard B. A., Asselineau D., Schaffar-Deshayes L., Darmon M. Y. Abnormal sequence of expression of differentiation markers in psoriatic epidermis: inversion of two steps in the differentiation program? J Invest Dermatol. 1988 Jun;90(6):801–805. doi: 10.1111/1523-1747.ep12462014. [DOI] [PubMed] [Google Scholar]
- Bernerd F., Magnaldo T., Darmon M. Delayed onset of epidermal differentiation in psoriasis. J Invest Dermatol. 1992 Jun;98(6):902–910. doi: 10.1111/1523-1747.ep12460344. [DOI] [PubMed] [Google Scholar]
- Bohnert A., Hornung J., Mackenzie I. C., Fusenig N. E. Epithelial-mesenchymal interactions control basement membrane production and differentiation in cultured and transplanted mouse keratinocytes. Cell Tissue Res. 1986;244(2):413–429. doi: 10.1007/BF00219217. [DOI] [PubMed] [Google Scholar]
- Boukamp P., Breitkreutz D., Stark H. J., Fusenig N. E. Mesenchyme-mediated and endogenous regulation of growth and differentiation of human skin keratinocytes derived from different body sites. Differentiation. 1990 Aug;44(2):150–161. doi: 10.1111/j.1432-0436.1990.tb00548.x. [DOI] [PubMed] [Google Scholar]
- Bowden P. E., Stark H. J., Breitkreutz D., Fusenig N. E. Expression and modification of keratins during terminal differentiation of mammalian epidermis. Curr Top Dev Biol. 1987;22:35–68. doi: 10.1016/s0070-2153(08)60098-8. [DOI] [PubMed] [Google Scholar]
- Breitkreutz D., Bohnert A., Herzmann E., Bowden P. E., Boukamp P., Fusenig N. E. Differentiation specific functions in cultured and transplanted mouse keratinocytes: environmental influences on ultrastructure and keratin expression. Differentiation. 1984;26(2):154–169. doi: 10.1111/j.1432-0436.1984.tb01389.x. [DOI] [PubMed] [Google Scholar]
- 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]
- 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]
- Clark R. A. Cutaneous tissue repair: basic biologic considerations. I. J Am Acad Dermatol. 1985 Nov;13(5 Pt 1):701–725. doi: 10.1016/s0190-9622(85)70213-7. [DOI] [PubMed] [Google Scholar]
- Coulomb B., Lebreton C., Dubertret L. Influence of human dermal fibroblasts on epidermalization. J Invest Dermatol. 1989 Jan;92(1):122–125. doi: 10.1111/1523-1747.ep13071335. [DOI] [PubMed] [Google Scholar]
- Davison P. M., Karasek M. A. Human dermal microvascular endothelial cells in vitro: effect of cyclic AMP on cellular morphology and proliferation rate. J Cell Physiol. 1981 Feb;106(2):253–258. doi: 10.1002/jcp.1041060211. [DOI] [PubMed] [Google Scholar]
- Dorssers L., Burger H., Bot F., Delwel R., Geurts van Kessel A. H., Löwenberg B., Wagemaker G. Characterization of a human multilineage-colony-stimulating factor cDNA clone identified by a conserved noncoding sequence in mouse interleukin-3. Gene. 1987;55(1):115–124. doi: 10.1016/0378-1119(87)90254-x. [DOI] [PubMed] [Google Scholar]
- Feinberg A. P., Vogelstein B. A technique for radiolabeling DNA restriction endonuclease fragments to high specific activity. Anal Biochem. 1983 Jul 1;132(1):6–13. doi: 10.1016/0003-2697(83)90418-9. [DOI] [PubMed] [Google Scholar]
- Finch P. W., Rubin J. S., Miki T., Ron D., Aaronson S. A. Human KGF is FGF-related with properties of a paracrine effector of epithelial cell growth. Science. 1989 Aug 18;245(4919):752–755. doi: 10.1126/science.2475908. [DOI] [PubMed] [Google Scholar]
- Foidart J. M., Bere E. W., Jr, Yaar M., Rennard S. I., Gullino M., Martin G. R., Katz S. I. Distribution and immunoelectron microscopic localization of laminin, a noncollagenous basement membrane glycoprotein. Lab Invest. 1980 Mar;42(3):336–342. [PubMed] [Google Scholar]
- Grinnell F., Takashima A., Lamke-Seymour C. Morphological appearance of epidermal cells cultured on fibroblast-reorganized collagen gels. Cell Tissue Res. 1986;246(1):13–21. doi: 10.1007/BF00218993. [DOI] [PubMed] [Google Scholar]
- Grossman R. M., Krueger J., Yourish D., Granelli-Piperno A., Murphy D. P., May L. T., Kupper T. S., Sehgal P. B., Gottlieb A. B. Interleukin 6 is expressed in high levels in psoriatic skin and stimulates proliferation of cultured human keratinocytes. Proc Natl Acad Sci U S A. 1989 Aug;86(16):6367–6371. doi: 10.1073/pnas.86.16.6367. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Guo M., Grinnell F. Basement membrane and human epidermal differentiation in vitro. J Invest Dermatol. 1989 Sep;93(3):372–378. [PubMed] [Google Scholar]
- Hancock G. E., Kaplan G., Cohn Z. A. Keratinocyte growth regulation by the products of immune cells. J Exp Med. 1988 Oct 1;168(4):1395–1402. doi: 10.1084/jem.168.4.1395. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Jun B. D., Krueger G. G., Roberts L. K. Differential expression of Ia by murine keratinocytes and gut epithelium in response to recombinant gamma-interferon. J Invest Dermatol. 1989 Jul;93(1):33–39. doi: 10.1111/1523-1747.ep12277340. [DOI] [PubMed] [Google Scholar]
- Kopan R., Fuchs E. The use of retinoic acid to probe the relation between hyperproliferation-associated keratins and cell proliferation in normal and malignant epidermal cells. J Cell Biol. 1989 Jul;109(1):295–307. doi: 10.1083/jcb.109.1.295. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Kopan R., Traska G., Fuchs E. Retinoids as important regulators of terminal differentiation: examining keratin expression in individual epidermal cells at various stages of keratinization. J Cell Biol. 1987 Jul;105(1):427–440. doi: 10.1083/jcb.105.1.427. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Kumar S., West D. C., Ager A. Heterogeneity in endothelial cells from large vessels and microvessels. Differentiation. 1987;36(1):57–70. doi: 10.1111/j.1432-0436.1987.tb00181.x. [DOI] [PubMed] [Google Scholar]
- Lambert C. A., Soudant E. P., Nusgens B. V., Lapière C. M. Pretranslational regulation of extracellular matrix macromolecules and collagenase expression in fibroblasts by mechanical forces. Lab Invest. 1992 Apr;66(4):444–451. [PubMed] [Google Scholar]
- Limat A., Breitkreutz D., Hunziker T., Boillat C., Wiesmann U., Klein E., Noser F., Fusenig N. E. Restoration of the epidermal phenotype by follicular outer root sheath cells in recombinant culture with dermal fibroblasts. Exp Cell Res. 1991 Jun;194(2):218–227. doi: 10.1016/0014-4827(91)90357-z. [DOI] [PubMed] [Google Scholar]
- Limat A., Hunziker T., Boillat C., Bayreuther K., Noser F. Post-mitotic human dermal fibroblasts efficiently support the growth of human follicular keratinocytes. J Invest Dermatol. 1989 May;92(5):758–762. doi: 10.1111/1523-1747.ep12722530. [DOI] [PubMed] [Google Scholar]
- Mackenzie I. C., Fusenig N. E. Regeneration of organized epithelial structure. J Invest Dermatol. 1983 Jul;81(1 Suppl):189s–194s. doi: 10.1111/1523-1747.ep12541093. [DOI] [PubMed] [Google Scholar]
- Miyatake S., Otsuka T., Yokota T., Lee F., Arai K. Structure of the chromosomal gene for granulocyte-macrophage colony stimulating factor: comparison of the mouse and human genes. EMBO J. 1985 Oct;4(10):2561–2568. doi: 10.1002/j.1460-2075.1985.tb03971.x. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Nakagawa S., Pawelek P., Grinnell F. Long-term culture of fibroblasts in contracted collagen gels: effects on cell growth and biosynthetic activity. J Invest Dermatol. 1989 Dec;93(6):792–798. doi: 10.1111/1523-1747.ep12284425. [DOI] [PubMed] [Google Scholar]
- Noser F. K., Limat A. Organotypic culture of outer root sheath cells from human hair follicles using a new culture device. In Vitro Cell Dev Biol. 1987 Aug;23(8):541–545. doi: 10.1007/BF02620971. [DOI] [PubMed] [Google Scholar]
- O'Keefe E. J., Chiu M. L., Payne R. E., Jr Stimulation of growth of keratinocytes by basic fibroblast growth factor. J Invest Dermatol. 1988 May;90(5):767–769. doi: 10.1111/1523-1747.ep12560956. [DOI] [PubMed] [Google Scholar]
- Paye M., Nusgens B. V., Lapière C. M. Modulation of cellular biosynthetic activity in the retracting collagen lattice. Eur J Cell Biol. 1987 Dec;45(1):44–50. [PubMed] [Google Scholar]
- Plumb M., Stein J., Stein G. Coordinate regulation of multiple histone mRNAs during the cell cycle in HeLa cells. Nucleic Acids Res. 1983 Apr 25;11(8):2391–2410. doi: 10.1093/nar/11.8.2391. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Ponec M., Wauben-Penris P. J., Burger A., Kempenaar J., Boddé H. E. Nitroglycerin and sucrose permeability as quality markers for reconstructed human epidermis. Skin Pharmacol. 1990;3(2):126–135. doi: 10.1159/000210859. [DOI] [PubMed] [Google Scholar]
- Purkis P. E., Steel J. B., Mackenzie I. C., Nathrath W. B., Leigh I. M., Lane E. B. Antibody markers of basal cells in complex epithelia. J Cell Sci. 1990 Sep;97(Pt 1):39–50. doi: 10.1242/jcs.97.1.39. [DOI] [PubMed] [Google Scholar]
- Rheinwald J. G., Green H. Serial cultivation of strains of human epidermal keratinocytes: the formation of keratinizing colonies from single cells. Cell. 1975 Nov;6(3):331–343. doi: 10.1016/s0092-8674(75)80001-8. [DOI] [PubMed] [Google Scholar]
- Roop D. R., Cheng C. K., Titterington L., Meyers C. A., Stanley J. R., Steinert P. M., Yuspa S. H. Synthetic peptides corresponding to keratin subunits elicit highly specific antibodies. J Biol Chem. 1984 Jul 10;259(13):8037–8040. [PubMed] [Google Scholar]
- Rubin J. S., Osada H., Finch P. W., Taylor W. G., Rudikoff S., Aaronson S. A. Purification and characterization of a newly identified growth factor specific for epithelial cells. Proc Natl Acad Sci U S A. 1989 Feb;86(3):802–806. doi: 10.1073/pnas.86.3.802. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Rupnick M. A., Carey A., Williams S. K. Phenotypic diversity in cultured cerebral microvascular endothelial cells. In Vitro Cell Dev Biol. 1988 May;24(5):435–444. doi: 10.1007/BF02628495. [DOI] [PubMed] [Google Scholar]
- Sanquer S., Coulomb B., Lebreton C., Dubertret L. Human dermal fibroblasts modulate the effects of retinoids on epidermal growth. J Invest Dermatol. 1990 Dec;95(6):700–704. doi: 10.1111/1523-1747.ep12514500. [DOI] [PubMed] [Google Scholar]
- Sarber R., Hull B., Merrill C., Soranno T., Bell E. Regulation of proliferation of fibroblasts of low and high population doubling levels grown in collagen lattices. Mech Ageing Dev. 1981 Oct;17(2):107–117. doi: 10.1016/0047-6374(81)90077-4. [DOI] [PubMed] [Google Scholar]
- Stoler A., Kopan R., Duvic M., Fuchs E. Use of monospecific antisera and cRNA probes to localize the major changes in keratin expression during normal and abnormal epidermal differentiation. J Cell Biol. 1988 Aug;107(2):427–446. doi: 10.1083/jcb.107.2.427. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Waelti E. R., Inaebnit S. P., Rast H. P., Hunziker T., Limat A., Braathen L. R., Wiesmann U. Co-culture of human keratinocytes on post-mitotic human dermal fibroblast feeder cells: production of large amounts of interleukin 6. J Invest Dermatol. 1992 May;98(5):805–808. doi: 10.1111/1523-1747.ep12499961. [DOI] [PubMed] [Google Scholar]
- Watt F. M. Selective migration of terminally differentiating cells from the basal layer of cultured human epidermis. J Cell Biol. 1984 Jan;98(1):16–21. doi: 10.1083/jcb.98.1.16. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Werner S., Peters K. G., Longaker M. T., Fuller-Pace F., Banda M. J., Williams L. T. Large induction of keratinocyte growth factor expression in the dermis during wound healing. Proc Natl Acad Sci U S A. 1992 Aug 1;89(15):6896–6900. doi: 10.1073/pnas.89.15.6896. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Woodcock-Mitchell J., Eichner R., Nelson W. G., Sun T. T. Immunolocalization of keratin polypeptides in human epidermis using monoclonal antibodies. J Cell Biol. 1982 Nov;95(2 Pt 1):580–588. doi: 10.1083/jcb.95.2.580. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Yaeger P. C., Stiles C. D., Rollins B. J. Human keratinocyte growth-promoting activity on the surface of fibroblasts. J Cell Physiol. 1991 Oct;149(1):110–116. doi: 10.1002/jcp.1041490114. [DOI] [PubMed] [Google Scholar]
- Zilberstein A., Ruggieri R., Korn J. H., Revel M. Structure and expression of cDNA and genes for human interferon-beta-2, a distinct species inducible by growth-stimulatory cytokines. EMBO J. 1986 Oct;5(10):2529–2537. doi: 10.1002/j.1460-2075.1986.tb04531.x. [DOI] [PMC free article] [PubMed] [Google Scholar]