Clinical & Experimental Metastasis

, Volume 22, Issue 7, pp 533–538 | Cite as

Chromosomal Alterations in Lung Metastases of Colorectal Carcinomas: Associations with Tissue Specific Tumor Dissemination

  • Thomas Knösel
  • Karsten Schlüns
  • Manfred Dietel
  • Iver Petersen
Article

Abstract

Comparative genomic hybridization was used to screen colorectal carcinomas for chromosomal aberrations that are associated with the metastatic phenotype of the lung. Specimens of 13 lung metastases, 6 primary tumors, 1 lymph node metastasis, 1 liver metastasis, and 1 ovarian metastasis were investigated and added to our CGH colon cancer tumor collective, comprising 85 tumor specimens from 56 patients (see CGH online tumor database at http://amba.charite.de/cgh). Lung metastases showed more alterations than liver metastases, particularly more deletions at 1p, 3p, 9q, 12q, 17q, 19p and 22q and gains at 2q, 5p, and chromosome 6. Comparing lung metastases with their corresponding primary tumors, particularly more deletions at 3p, 8p, 12q, 17q, and 21q21 and gains at 5p were observed. Based on our results, we wish to suggest a metastatic progression model. Specific subpopulations of metastatic cells have a distinct metastatic potential, which is reflected by a non-random accumulation of chromosomal alterations. Distinct alterations already exist within the primary tumor and this “ready to go package” gives the cells the metastatic potential to achieve the complex series of events needed for metastasis.

Keywords

CGH colorectal cancer liver metastases lung metastases metastasis 

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Copyright information

© Springer 2006

Authors and Affiliations

  • Thomas Knösel
    • 1
  • Karsten Schlüns
    • 1
    • 2
  • Manfred Dietel
    • 1
  • Iver Petersen
    • 1
    • 3
  1. 1.Institute of PathologyBerlinGermany
  2. 2.Digital Pathology and ITInstitute of PathologyBerlinGermany
  3. 3.Institute of PathologyUniversity Hospital CharitéBerlinGermany

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