Identification of a characteristic vascular belt zone in human colorectal cancer
Blood vessels in cancer Intra-tumoral blood vessels are of supreme importance for tumor growth, metastasis and therapy. Yet, little is known about spatial distribution patterns of these vessels. Most experimental or theoretical tumor models implicitly assume that blood vessels are equally abundant i...
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| Hauptverfasser: | , , , , , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
March 2, 2017
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| In: |
PLOS ONE
Year: 2017, Jahrgang: 12, Heft: 3 |
| ISSN: | 1932-6203 |
| DOI: | 10.1371/journal.pone.0171378 |
| Online-Zugang: | Verlag, kostenfrei, Volltext: http://dx.doi.org/10.1371/journal.pone.0171378 Verlag, kostenfrei, Volltext: http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0171378 
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| Verfasserangaben: | Jakob Nikolas Kather, Frank Gerrit Zöllner, Lothar R. Schad, Susanne Maria Melchers, Hans-Peter Sinn, Alexander Marx, Timo Gaiser, Cleo-Aron Weis |
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| 245 | 1 | 0 | |a Identification of a characteristic vascular belt zone in human colorectal cancer |c Jakob Nikolas Kather, Frank Gerrit Zöllner, Lothar R. Schad, Susanne Maria Melchers, Hans-Peter Sinn, Alexander Marx, Timo Gaiser, Cleo-Aron Weis |
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| 520 | |a Blood vessels in cancer Intra-tumoral blood vessels are of supreme importance for tumor growth, metastasis and therapy. Yet, little is known about spatial distribution patterns of these vessels. Most experimental or theoretical tumor models implicitly assume that blood vessels are equally abundant in different parts of the tumor, which has far-reaching implications for chemotherapy and tumor metabolism. In contrast, based on histological observations, we hypothesized that blood vessels follow specific spatial distribution patterns in colorectal cancer tissue. We developed and applied a novel computational approach to identify spatial patterns of angiogenesis in histological whole-slide images of human colorectal cancer. A characteristic spatial pattern of blood vessels in colorectal cancer In 33 of 34 (97%) colorectal cancer primary tumors blood vessels were significantly aggregated in a sharply limited belt-like zone at the interface of tumor tissue to the intestinal lumen. In contrast, in 11 of 11 (100%) colorectal cancer liver metastases, a similar hypervascularized zone could be found at the boundary to surrounding liver tissue. Also, in an independent validation cohort, we found this vascular belt zone: 22 of 23 (96%) samples of primary tumors and 15 of 16 (94%) samples of liver metastases exhibited the above-mentioned spatial distribution. Summary and implications We report consistent spatial patterns of tumor vascularization that may have far-reaching implications for models of drug distribution, tumor metabolism and tumor growth: luminal hypervascularization in colorectal cancer primary tumors is a previously overlooked feature of cancer tissue. In colorectal cancer liver metastases, we describe a corresponding pattern at the invasive margin. These findings add another puzzle piece to the complex concept of tumor heterogeneity. | ||
| 650 | 4 | |a Metastasis | |
| 650 | 4 | |a Blood vessels | |
| 650 | 4 | |a Colon | |
| 650 | 4 | |a Colorectal cancer | |
| 650 | 4 | |a Gastrointestinal tract | |
| 650 | 4 | |a Histology | |
| 650 | 4 | |a Metastatic tumors | |
| 650 | 4 | |a Tissue distribution | |
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