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Cell, Tumor, and Stem Cell Biology

Identification of Pancreatic Cancer Stem Cells

Chenwei Li, David G. Heidt, Piero Dalerba, Charles F. Burant, Lanjing Zhang, Volkan Adsay, Max Wicha, Michael F. Clarke and Diane M. Simeone
Chenwei Li
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David G. Heidt
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Piero Dalerba
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Charles F. Burant
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Lanjing Zhang
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Volkan Adsay
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Max Wicha
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Michael F. Clarke
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Diane M. Simeone
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DOI: 10.1158/0008-5472.CAN-06-2030 Published February 2007
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Abstract

Emerging evidence has suggested that the capability of a tumor to grow and propagate is dependent on a small subset of cells within a tumor, termed cancer stem cells. Although data have been provided to support this theory in human blood, brain, and breast cancers, the identity of pancreatic cancer stem cells has not been determined. Using a xenograft model in which primary human pancreatic adenocarcinomas were grown in immunocompromised mice, we identified a highly tumorigenic subpopulation of pancreatic cancer cells expressing the cell surface markers CD44, CD24, and epithelial-specific antigen (ESA). Pancreatic cancer cells with the CD44+CD24+ESA+ phenotype (0.2–0.8% of pancreatic cancer cells) had a 100-fold increased tumorigenic potential compared with nontumorigenic cancer cells, with 50% of animals injected with as few as 100 CD44+CD24+ESA+ cells forming tumors that were histologically indistinguishable from the human tumors from which they originated. The enhanced ability of CD44+CD24+ESA+ pancreatic cancer cells to form tumors was confirmed in an orthotopic pancreatic tail injection model. The CD44+CD24+ESA+ pancreatic cancer cells showed the stem cell properties of self-renewal, the ability to produce differentiated progeny, and increased expression of the developmental signaling molecule sonic hedgehog. Identification of pancreatic cancer stem cells and further elucidation of the signaling pathways that regulate their growth and survival may provide novel therapeutic approaches to treat pancreatic cancer, which is notoriously resistant to standard chemotherapy and radiation. [Cancer Res 2007;67(3):1030–7]

  • pancreatic cancer
  • stem cells
  • niche
  • CD44
  • ESA
  • CD24

Footnotes

    • Received June 2, 2006.
    • Revision received October 18, 2006.
    • Accepted November 21, 2006.
    • ©2007 American Association for Cancer Research.
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    Cancer Research: 67 (3)
    February 2007
    Volume 67, Issue 3
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    Identification of Pancreatic Cancer Stem Cells
    Chenwei Li, David G. Heidt, Piero Dalerba, Charles F. Burant, Lanjing Zhang, Volkan Adsay, Max Wicha, Michael F. Clarke and Diane M. Simeone
    Cancer Res February 1 2007 (67) (3) 1030-1037; DOI: 10.1158/0008-5472.CAN-06-2030

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    Identification of Pancreatic Cancer Stem Cells
    Chenwei Li, David G. Heidt, Piero Dalerba, Charles F. Burant, Lanjing Zhang, Volkan Adsay, Max Wicha, Michael F. Clarke and Diane M. Simeone
    Cancer Res February 1 2007 (67) (3) 1030-1037; DOI: 10.1158/0008-5472.CAN-06-2030
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