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Kapoor, Preeti; Saunders, Marnie M.; Li, Zhongyong; Zhou, Zhiyi; Sheaffer, Nate; Kunze, Elaine L.; Samant, Rajeev S.; Welch, Danny R.; Donahue, Henry J.

Breast cancer metastatic potential: Correlation with increased heterotypic gap junctional intercellular communication between breast cancer cells and osteoblastic cells

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  • Media type: E-Article
  • Title: Breast cancer metastatic potential: Correlation with increased heterotypic gap junctional intercellular communication between breast cancer cells and osteoblastic cells
  • Contributor: Kapoor, Preeti; Saunders, Marnie M.; Li, Zhongyong; Zhou, Zhiyi; Sheaffer, Nate; Kunze, Elaine L.; Samant, Rajeev S.; Welch, Danny R.; Donahue, Henry J.
  • imprint: Wiley, 2004
  • Published in: International Journal of Cancer
  • Language: English
  • DOI: 10.1002/ijc.20318
  • ISSN: 0020-7136; 1097-0215
  • Origination:
  • Footnote:
  • Description: <jats:title>Abstract</jats:title><jats:p>The breast cancer metastasis‐suppressor gene <jats:italic>BRMS1</jats:italic> is downregulated in metastatic breast cancer cells. Previous reports have shown restoration of gap junctional intercellular communication (GJIC) in the metastatic human breast carcinoma cell line MDA‐MB‐435 (435) transfected with <jats:italic>BRMS1</jats:italic> cDNA. Metastasis, to a large extent in most breast cancers, occurs to bone. However, the reason for this preferential metastasis is not known. We explored cell‐to‐cell communication between 435 carcinoma cells and a human osteoblastic cell line, hFOB1.19, to determine whether carcinoma cells can form gap junctions with bone cells and to explore the role of these heterotypic gap junctions and the <jats:italic>BRMS1</jats:italic> gene in breast cancer metastasis to bone. 435 cells displayed greater cell‐to‐cell communication with hFOB 1.19 cells than with themselves. Transfection of <jats:italic>BRMS1</jats:italic> into 435 cells increased homotypic gap junctional communication but did not significantly affect heterotypic communication with hFOBs. However, heterotypic communication of <jats:italic>BRMS1</jats:italic> transfectants with hFOB cells was reduced relative to homotypic communication. In contrast, parental 435 cells displayed greater heterotypic communication with hFOBs relative to homotypic communication. Our results suggest that there are differences in the relative homotypic and heterotypic GJIC of metastasis‐capable and ‐suppressed cell lines. © 2004 Wiley‐Liss, Inc.</jats:p>
  • Access State: Open Access