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Cell Growth & Differentiation, Vol 9, Issue 6 475-485, Copyright © 1998 by American Association of Cancer Research


ARTICLES

Overexpression of CC10 modifies neoplastic potential in lung cancer cells

E Szabo, A Goheer, H Witschi and RI Linnoila
Department of Cell and Cancer Biology, Medicine Branch, Division of Clinical Sciences, National Cancer Institute, Rockville, Maryland 20850, USA. szaboe@bprb.nci.nih.gov

CC10 is infrequently expressed in non-small cell lung cancer cell lines, despite being abundantly produced by progenitor cells for normal and neoplastic airway epithelium. We overexpressed CC10 cDNA in the non-small cell lung cancer cell line A549 to determine its effect on the neoplastic phenotype. A549 cells transfected with CC10 demonstrated a marked reduction in invasiveness that was paralleled by diminished 92-kDa and absent 72-kDa metalloproteinase activity by zymography. Western analysis revealed the near absence of the corresponding matrix metalloproteinases (MMPs) MMP-2 and MMP-9 in the CC10-transfected cell lines, but not in the vector-transfected cell lines. The CC10-transfected cell lines also demonstrated decreased adhesiveness to fibronectin compared with the controls. CC10 expression was associated with decreased anchorage-independent growth but not with decreased anchorage-dependent growth. These data suggest that loss of CC10 may contribute to carcinogenesis, because CC10 antagonizes the neoplastic phenotype.


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HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Cancer Research Clinical Cancer Research
Cancer Epidemiology Biomarkers & Prevention Molecular Cancer Therapeutics
Molecular Cancer Research Cell Growth & Differentiation
Copyright © 1998 by the American Association of Cancer Research.