Tumour-initiating stem-like cells in human prostate cancer exhibit increased NF-κB signalling

Vinagolu K. Rajasekhar (), Lorenz Studer, William Gerald, Nicholas D. Socci and Howard I. Scher
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Vinagolu K. Rajasekhar: Stem Cell Center and Developmental Biology Program, Sloan-Kettering Institute, Memorial Sloan-Kettering Cancer Center
Lorenz Studer: Stem Cell Center and Developmental Biology Program, Sloan-Kettering Institute, Memorial Sloan-Kettering Cancer Center
William Gerald: Memorial Sloan-Kettering Cancer Center
Nicholas D. Socci: Computational Biology Center, Memorial Sloan-Kettering Cancer Center
Howard I. Scher: Sidney Kimmel Center for Prostate and Urologic Cancers, Memorial Sloan-Kettering Cancer Center

Nature Communications, 2011, vol. 2, issue 1, 1-13

Abstract: Abstract Androgen depletion is a key strategy for treating human prostate cancer, but the presence of hormone-independent cells escaping treatment remains a major therapeutic challenge. Here, we identify a minor subset of stem-like human prostate tumour-initiating cells (TICs) that do not express prostate cancer markers, such as androgen receptor or prostate specific antigen. These TICs possess stem cell characteristics and multipotency as demonstrated by in vitro sphere-formation and in vivo tumour-initiation, respectively. The cells represent an undifferentiated subtype of basal cells and can be purified from prostate tumours based on coexpression of the human pluripotent stem cell marker TRA-1-60 with CD151 and CD166. Such triple-marker-positive TICs recapitulate the original parent tumour heterogeneity in serial xeno-transplantations indicating a tumour cell hierarchy in human prostate cancer development. These TICs exhibit increased nuclear factor-κB activity. These findings are important in understanding the molecular basis of human prostate cancer.

Date: 2011
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DOI: 10.1038/ncomms1159

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