TY - JOUR
T1 - miR-21 inhibition reduces liver fibrosis and prevents tumor development by inducing apoptosis of CD24+ progenitor cells
AU - Zhang, Jing
AU - Jiao, Jingjing
AU - Cermelli, Silvia
AU - Muir, Kyle
AU - Jung, Kwang Hwa
AU - Zou, Ruhai
AU - Rashid, Asif
AU - Gagea, Mihai
AU - Zabludoff, Sonya
AU - Kalluri, Raghu
AU - Beretta, Laura
N1 - Publisher Copyright:
© 2015 American Association for Cancer Research.
PY - 2015/5/1
Y1 - 2015/5/1
N2 - miR-21 is upregulated in hepatocellular carcinoma and intrahepatic cholangiocarcinoma, where it is associated with poor prognosis. Here, we offer preclinical evidence that miR-21 offers a therapeutic and chemopreventive target in these liver cancers. In mice with hepatic deletion of Pten, anti-miR-21 treatment reduced liver tumor growth and prevented tumor development. These effects were accompanied with a decrease in liver fibrosis and a concomitant reduction of CD24+ liver progenitor cells and S100A4+ cancer-associated stromal cells. Notch2 inhibition also occurred in tumors following anti-miR-21 treatment. We further showed that miR-21 is necessary for the survival of CD24+ progenitor cells, a cellular phenotype mediated by Notch2, osteopontin, and integrin av. Our results identify miR-21 as a key regulator of tumor-initiating cell survival, malignant development, and growth in liver cancer, highlighting the role of CD24+ cells in the expansion of S100A4+ cancer-associated stromal cells and associated liver fibrosis.
AB - miR-21 is upregulated in hepatocellular carcinoma and intrahepatic cholangiocarcinoma, where it is associated with poor prognosis. Here, we offer preclinical evidence that miR-21 offers a therapeutic and chemopreventive target in these liver cancers. In mice with hepatic deletion of Pten, anti-miR-21 treatment reduced liver tumor growth and prevented tumor development. These effects were accompanied with a decrease in liver fibrosis and a concomitant reduction of CD24+ liver progenitor cells and S100A4+ cancer-associated stromal cells. Notch2 inhibition also occurred in tumors following anti-miR-21 treatment. We further showed that miR-21 is necessary for the survival of CD24+ progenitor cells, a cellular phenotype mediated by Notch2, osteopontin, and integrin av. Our results identify miR-21 as a key regulator of tumor-initiating cell survival, malignant development, and growth in liver cancer, highlighting the role of CD24+ cells in the expansion of S100A4+ cancer-associated stromal cells and associated liver fibrosis.
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U2 - 10.1158/0008-5472.CAN-14-1254
DO - 10.1158/0008-5472.CAN-14-1254
M3 - Article
C2 - 25769721
AN - SCOPUS:84933036440
SN - 0008-5472
VL - 75
SP - 1859
EP - 1867
JO - Cancer Research
JF - Cancer Research
IS - 9
ER -