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Cited by 266

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Smad4/DPC4-mediated tumor suppression through suppression of angiogenesis

Open access
Schwarte-Waldhoff, Irmgard, Volpert, Olga V., Bouck, Noël P., Sipos, Bence, Hahn, Stephan A., Klein-Scory, Susanne, Lüttges, Jutta, Klöppel, Günter, Graeven, Ulrich, Eilert-Micus, Christina, Hintelmann, Annette, Schmiegel, Wolff·2000·Proceedings of the National Academy of Sciences

Abstract

Smad4/ DPC4 (deleted in pancreatic carcinoma, locus 4) is a tumor suppressor gene lost at high frequency in cancers of the pancreas and other gastrointestinal organs. Smad4 encodes a key intracellular messenger in the transforming growth factor β (TGF-β) signaling cascade. TGF-β is a potent inhibitor of the growth of epithelial cells; thus, it has been assumed that loss of Smad4 during tumor progression relieves this inhibition. Herein, we show that restoration of Smad4 to human pancreatic carcinoma cells suppressed tumor formation in vivo , yet it did not restore sensitivity to TGF-β. Rather, Smad4 restoration influenced angiogenesis, decreasing expression of vascular endothelial growth factor and increasing expression of thrombospondin-1. In contrast to the parental cell line and to control transfectants that produced rapidly growing tumors in vivo , Smad4 revertants induced small nonprogressive tumors with reduced vascular density. These data define the control of an angiogenic switch as an alternative, previously unknown mechanism of tumor suppression for Smad4 and identify the angiogenic mediators vascular endothelial growth factor and thrombospondin-1 as key target genes.

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Crossref · 10.1073/pnas.97.17.9624

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Metadata

Authors
Schwarte-Waldhoff, I., Volpert, O. V., Bouck, N. P., Sipos, B., Hahn, S. A., Klein-Scory, S., Lüttges, J., Klöppel, G., Graeven, U., Eilert-Micus, C., Hintelmann, A., & Schmiegel, W.
Venue
Proceedings of the National Academy of Sciences
Published
2000-08-15
Volume
97
Issue
17
Pages
9624-9629
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2015353751
Cited by
266
References
1
FWCI
7.21
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Smad4/DPC4-mediated tumor suppression through suppression of angiogenesis. https://app.cochat.ai/papers/10.1073/pnas.97.17.9624
The paper
Schwarte-Waldhoff, I., Volpert, O. V., Bouck, N. P., Sipos, B., Hahn, S. A., Klein-Scory, S., Lüttges, J., Klöppel, G., Graeven, U., Eilert-Micus, C., Hintelmann, A., & Schmiegel, W. (2000). Smad4/DPC4-mediated tumor suppression through suppression of angiogenesis. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.97.17.9624

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.