Tropism between hepatic and pulmonary metastases in colorectal cancers

  • Authors:
    • Sung-Hyun Kim
    • So-Jung Choi
    • Joon Suk Park
    • Jinseon Lee
    • Yong Beom Cho
    • Min-Woong Kang
    • Woo Yong Lee
    • Yong Soo Choi
    • Hong Kwan Kim
    • Joungho Han
    • Ho-Kyung Chun
    • Jhingook Kim
  • View Affiliations

  • Published online on: May 29, 2012     https://doi.org/10.3892/or.2012.1837
  • Pages: 459-464
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Abstract

In metastatic colorectal cancers, tumor cells are disseminated prior to surgical resection of the primary tumor but remain dormant until proper colonization mechanisms are activated. To identify the colonization mechanisms of the metastatic tumors, we conducted a pairwise comparison between primary colorectal cancers and metastatic tumors (n=12 pairs), including six hepatic pairs and six pulmonary pairs. The mRNA levels of 224 genes previously reported to be associated with metastasis, cytokines and angiogenesis were quantitatively determined by PCR arrays. Among them, 27 genes were duplicated or triplicated to show consistent expression. Unsupervised hierarchical clustering of the Ct values of metastasis-related genes revealed that liver metastases were indistinguishable from primary colorectal cancers (n=5/6), whereas lung metastases were highly diversified from one another and from the primary tumors (n=6/6). Cytokines and receptor gene expression array data also confirmed the divergence of pulmonary metastases from primary colorectal cancers (n=6/6). Heat map analyses of ΔCt values of the metastasis-related genes identified a 17-gene tropism signature that was sufficient not only to distinguish liver and the lung metastases, but also reconstituted the clustering of primary tumors with the hepatic metastases (n=17/18). In this pilot experiment, pulmonary metastases were significantly diverged from hepatic metastases that were indistinguishable from primary colorectal cancers. Further genomic and clinical studies are in progress to evaluate the potential of the tropism signature as a therapeutic target to inhibit the colonization of metastatic colorectal cancers.
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August 2012
Volume 28 Issue 2

Print ISSN: 1021-335X
Online ISSN:1791-2431

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Spandidos Publications style
Kim S, Choi S, Park JS, Lee J, Cho YB, Kang M, Lee WY, Choi YS, Kim HK, Han J, Han J, et al: Tropism between hepatic and pulmonary metastases in colorectal cancers. Oncol Rep 28: 459-464, 2012
APA
Kim, S., Choi, S., Park, J.S., Lee, J., Cho, Y.B., Kang, M. ... Kim, J. (2012). Tropism between hepatic and pulmonary metastases in colorectal cancers. Oncology Reports, 28, 459-464. https://doi.org/10.3892/or.2012.1837
MLA
Kim, S., Choi, S., Park, J. S., Lee, J., Cho, Y. B., Kang, M., Lee, W. Y., Choi, Y. S., Kim, H. K., Han, J., Chun, H., Kim, J."Tropism between hepatic and pulmonary metastases in colorectal cancers". Oncology Reports 28.2 (2012): 459-464.
Chicago
Kim, S., Choi, S., Park, J. S., Lee, J., Cho, Y. B., Kang, M., Lee, W. Y., Choi, Y. S., Kim, H. K., Han, J., Chun, H., Kim, J."Tropism between hepatic and pulmonary metastases in colorectal cancers". Oncology Reports 28, no. 2 (2012): 459-464. https://doi.org/10.3892/or.2012.1837