Journal
CANCER BIOLOGY & THERAPY
Volume 6, Issue 5, Pages 763-768Publisher
TAYLOR & FRANCIS INC
DOI: 10.4161/cbt.6.5.3996
Keywords
cancer stem cells; Du145; prostate cancer; differentiation; CD133; self renew; CD117; CD44; integrin alpha 2 beta 1
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The aim of this study is to investigate cancer stem cells and their markers in the prostate cancer cell line Du145. Different populations of cells were isolated from Du145. The clones formed by CD44(+) integrin alpha(2)beta(1) (+)CD133(+) cells are remarkably different morphologically and quantitatively from those formed by integrin alpha(2)beta(1) (-/low)CD133(-) cells. CD133(+) cells have the capacity for self renewal, extensive differentiation potential, and high proliferative and tumorigenic potential. CD34(+) and CD117(+) cells have no stem cell properties. Expression levels of c-myc and beta-catenin were elevated and bax was down regulated in CD44(+) integrin alpha(2)beta(1) (+)CD133(+) cells. In summary, CD44, integrin alpha(2)beta(1) and CD133 could be the cancer stem cell makers for the Du145 cell line. CD133(+) cells differed significantly from CD44(+)integrin alpha(2)beta(1) (-/low)CD133(-) cells and the total population in clone generation, genes expression, differentiation, proliferative and tumorigenic potential.
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