Zusammenfassung
Patterning ist ein räumlicher und zeitlicher Prozess, durch den ein geordnetes Arrangement von Geweben und zellulären Strukturen erreicht wird. Der Begriff wird meist in der Morphogenese der Entwicklungsbiologie benutzt, kann aber auch für die Neomorphogenese in der Tumorbiologie nützlich sein. Trotz sich häufender Daten über die Proliferation und Differenzierung von Tumorzellen sind die Prozesse des Tumorpatterning wenig verstanden und selten untersucht. Ein fundamentaler embryonaler Patterningprozess ist die Gastrulation, und ein grundlegendes Beispiel des neoplastischen Patterning ist die Adenom-Karzinom-Sequenz des Kolons. Beide Prozesse zeigen eine distinkte nukleäre Translokation und Expression von β-Catenin, das dabei als transkriptioneller Aktivator fungiert. Unsere vor kurzem durchgeführten Untersuchungen zeigen eine verblüffende Ähnlichkeit des Patterning und der nukleären β-Cateninexpression zwischen der Kolon-Adenom-Karzinom-Sequenz und Schritten der Gastrulation. In beiden Prozessen sind Muster, wie zelluläre Dissozation, tubuläre Rekonstruktion und Verzweigung von neoplastischen Zellen, assoziiert mit einer distinkten nukleären Expression von β-Catenin. Diese Untersuchungen etablieren das Patterning als ein relevantes Konzept für die Tumorbiologie und verknüpfen die Morphogenese in Neoplasien mit der Embryogenese.
Abstract
Patterning is a spatial and temporal process by which ordered arrangements of cells and tissue structure are attained. The term is mostly applied to the morphogenesis in developmental pathology, but it can also be useful for the neomorphogenesis in tumor biology. Despite increasing data on the proliferation and differentiation of tumor cells, processes of tumor patterning are rarely studied and poorly understood. A fundamental embryonic process of patterning is the embryonic gastrulation and a basic patterning is found in the colonic adenoma-carcinoma sequence. Both processes exhibit distinct nuclear translocation and expression of β-catenin, which is considered to be a decisive transcriptional regulator. Our recent studies demonstrated striking analogies of patterning and nuclear β-catenin expression between the colonic adenoma-carcinoma sequence and the steps of gastrulation. The shared patterns are dissociation, reassembly, tubular reconstruction and branching of neoplastic cells in association with nuclear β-catenin expression. These findings establish patterning as a relevant concept for tumor formation and link the neoplastic morphogenesis with embryogenesis.
Literatur
Angerer L, Angerer R (1999) Regulative development of the sea urchin embryo: signalling cascades and morphogen gradients. Semin Cell Dev Biol 10:327–334
Barker N, Clevers H (2001) Tumor environment: a potent driving force in colorectal cancer? Trends Mol Med 7:535–537
Behrens J (2000) Control of beta-catenin signaling in tumor development. Ann N Y Acad Sci 910:21–33; discussion 33–25
Bienz M, Clevers H (2000) Linking colorectal cancer to Wnt signaling. Cell 103:311–320
Brabletz T, Jung A, Hermann K, Gunther K, Hohenberger W, Kirchner T (1998) Nuclear overexpression of the oncoprotein beta-catenin in colorectal cancer is localized predominantly at the invasion front. Pathol Res Pract 194:701–704
Brabletz T, Herrmann K, Jung A, Faller G, Kirchner T (2000) Expression of nuclear beta-catenin and c-myc is correlated with tumor size but not with proliferative activity of colorectal adenomas. Am J Pathol 156:865–870
Brabletz T, Jung A, Reu S et al. (2001) Variable beta-catenin expression in colorectal cancers indicates tumor progression driven by the tumor environment. Proc Natl Acad Sci U S A 98:10356–10361
Brabletz T, Jung A, Kirchner T (2002) β-Catenin and the morphogenesis of colorectal cancer. Virch Arch 441:1–11
Edelman GM (1988) Topobiology. An introduction to molecular embryology. Basic Books, Subsidiary of Perseus Books, New York
Fearon ER, Vogelstein B (1990) A genetic model for colorectal tumorigenesis. Cell 61:759–767
Kirchner T, Brabletz T (2000) Patterning and nuclear beta-catenin expression in the colonic adenoma-carcinoma sequence: analogies with embryonic gastrulation [In Process Citation]. Am J Pathol 157:1113–1121
Kirchner T, Brabletz T (2000) Tumor patterning: analogies of neoplastic morphogenesis with embryogenesis. Verh Dtsch Ges Pathol 84:22–27
Korinek V, Barker N, Morin PJ et al. (1997) Constitutive transcriptional activation by a beta-catenin-Tcf complex in APC-/-colon carcinoma [see comments]. Science 275:1784–1787
Logan CY, Miller JR, Ferkowicz MJ, McClay DR (1999) Nuclear beta-catenin is required to specify vegetal cell fates in the sea urchin embryo. Development 126:345–357
Miller JR, McClay DR (1997) Changes in the pattern of adherens junction-associated beta-catenin accompany morphogenesis in the sea urchin embryo. Dev Biol 192:310–322
Miller JR, McClay DR (1997) Characterization of the role of cadherin in regulating cell adhesion during sea urchin development. Dev Biol 192:323–339
Morin PJ, Sparks AB, Korinek V, Barker N, Clevers H, Vogelstein B, Kinzler KW (1997) Activation of beta-catenin-Tcf signaling in colon cancer by mutations in beta-catenin or APC [see comments]. Science 275:1787–1790
Shih IM, Wang TL, Traverso G et al. (2001) Top-down morphogenesis of colorectal tumors. Proc Natl Acad Sci U S A 98:2640–2645
Wikramanayake AH, Huang L, Klein WH (1998) Beta-catenin is essential for patterning the maternally specified animal-vegetal axis in the sea urchin embryo. Proc Natl Acad Sci U S A 95:9343–9348
Author information
Authors and Affiliations
Corresponding author
Additional information
In Anlehnung an Artikel im American Journal of Pathology, Vol. 157, 1113-21, 2000, und in Der Onkologe, Vol. 7, 364-369, 2001
Rights and permissions
About this article
Cite this article
Brabletz, T., Kirchner, T. Morphogenetische Aspekte des Dickdarmkarzinoms. Pathologe 24, 44–48 (2003). https://doi.org/10.1007/s00292-002-0603-8
Published:
Issue Date:
DOI: https://doi.org/10.1007/s00292-002-0603-8