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  Osteoblast-secreted factors enhance the expression of dysadherin and CCL2-dependent migration of renal carcinoma cells

Schüler, Y., Lee-Thedieck, C., Geiger, K., Kaiser, T., Ino, Y., Aicher, W. K., et al. (2012). Osteoblast-secreted factors enhance the expression of dysadherin and CCL2-dependent migration of renal carcinoma cells. International Journal of Cancer, 130(2), 288-299. doi:10.1002/ijc.25981.

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Genre: Journal Article
Alternative Title : Osteoblast-secreted factors enhance the expression of dysadherin and CCL2-dependent migration of renal carcinoma cells

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IntJCancer_130_2012_288.pdf (Any fulltext), 3MB
 
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 Creators:
Schüler, Yvonne, Author
Lee-Thedieck, Cornelia1, Author              
Geiger, Konstanze, Author
Kaiser, Tatjana, Author
Ino, Yoshinori, Author
Aicher, Wilhelm K., Author
Klein, Gerd, Author
Affiliations:
1Cellular Biophysics, Max Planck Institute for Medical Research, Max Planck Society, ou_2364731              

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Free keywords: CCL2/MCP-1; dysadherin; bone metastasis; bone marrow microenvironment; cell migration; renal cell carcinoma
 Abstract: Renal cell carcinoma (RCC) frequently metastasizes to the bone marrow. These metastases are characterized by extensive osteolytic lesions. The mechanism, however, by which RCC cells metastasize to bone marrow remains poorly understood. To unravel the role of bone marrow cells in this context, we performed cell adhesion and migration assays using human RCC cell lines to analyze the influence of resident bone marrow cells on renal tumor cells. The strongest adhesion of RCC cells was observed to osteoblasts. Moreover, conditioned medium of osteoblasts (OB-CM) significantly increased RCC cell migration. By gene expression analysis dysadherin was identified as a transcript whose expression could be elevated more than twofold in RCC cells when exposed to OB-CM. Suppression of dysadherin expression in RCC cells by siRNA reduced their ability to migrate in the presence of OB-CM. Furthermore, the RCC cells secreted high amounts of the chemokine CCL2 when tumor cells migrated under the influence of osteoblast-secreted factors. CCL2 neutralization strongly reduced the migratory ability of the RCC cells. Silencing the expression of dysadherin in RCC cells resulted in a twofold reduction of CCL2 protein expression indicating a dysadherin-dependent expression of the chemokine. Taken together, our data show that osteoblasts are the major cell type of the bone marrow that affect RCC cells by secreting factors that increase the expression of dysadherin and CCL2 in the tumor cells leading to enhanced cell migration. These data suggest an osteoblast-induced autocrine mechanism for a facilitated homing of RCC cells to the bone marrow.

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Language(s): eng - English
 Dates: 2010-09-062011-01-262011-02-152012-01-15
 Publication Status: Published in print
 Pages: 12
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Degree: -

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Title: International Journal of Cancer
  Other : Int. J. Cancer
Source Genre: Journal
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Publ. Info: New York, NY [etc.] : Wiley-Liss [etc.]
Pages: - Volume / Issue: 130 (2) Sequence Number: - Start / End Page: 288 - 299 Identifier: ISSN: 0020-7136
CoNE: https://pure.mpg.de/cone/journals/resource/954927701080