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Research Article

Frizzled 4 regulates stemness and invasiveness of migrating glioma cells established by serial intracranial transplantation

Xun Jin, Hee-Young Jeon, Kyeung Min Joo, Jun-Kyum Kim, Juyoun Jin, Sung-Hak Kim, Bong Gu Kang, Samuel Beck, Se Jeong Lee, Joong Kyu Kim, Ae-Kyung Park, Woong Yang Park, Yun-Jaie Choi, Do-Hyun Nam and Hyunggee Kim
Xun Jin
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Hee-Young Jeon
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Kyeung Min Joo
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Jun-Kyum Kim
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Juyoun Jin
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Sung-Hak Kim
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Bong Gu Kang
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Samuel Beck
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Se Jeong Lee
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Joong Kyu Kim
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Ae-Kyung Park
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Woong Yang Park
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Yun-Jaie Choi
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Do-Hyun Nam
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Hyunggee Kim
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DOI: 10.1158/0008-5472.CAN-10-1495
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Abstract

One of the most detrimental hallmarks of glioblastoma multiforme (GBM) is cellular invasiveness, which is considered a potential cause of tumor recurrence. Infiltrated GBM cells are difficult to completely eradicate surgically and with local therapeutic modalities. Although much effort has focused on understanding the various mechanisms controlling GBM invasiveness, its nature remains poorly understood. In this study, we established highly serial intracranial transplantation. U87R4 cells were highly invasive and displayed stem cell-like properties, as compared to non-invasive but proliferative U87L4 cells. Microarray analysis during serial transplantation revealed that apoptosis-inducing genes (caspase3 and PDCD4) were downregulated whereas several cancer stem cell-relevant genes (Frizzled 4, and CD44) were upregulated in more invasive cells. U87R4 cells were resistant to anticancer drug-induced cell death, partly due to downregulation of caspase3 and PDCD4, and they retained activated Wnt/β-catenin signaling due to upregulation of Frizzled 4, which was sufficient to control neurosphere formation. We also found that Frizzled 4 promoted expression of the epithelial to mesenchymal transition regulator SNAI1, along with acquisition of a mesenchymal phenotype. Taken together, our results argue that Frizzled 4 is a member of the Wnt signaling family that governs both stemness and invasiveness of glioma stem cells, and that it may be a major cause of GBM recurrence and poor prognosis.

  • Received April 28, 2010.
  • Revision received February 11, 2011.
  • Accepted February 22, 2011.
  • Copyright © 2011, American Association for Cancer Research.
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Published OnlineFirst March 1, 2011
doi: 10.1158/0008-5472.CAN-10-1495

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Frizzled 4 regulates stemness and invasiveness of migrating glioma cells established by serial intracranial transplantation
Xun Jin, Hee-Young Jeon, Kyeung Min Joo, Jun-Kyum Kim, Juyoun Jin, Sung-Hak Kim, Bong Gu Kang, Samuel Beck, Se Jeong Lee, Joong Kyu Kim, Ae-Kyung Park, Woong Yang Park, Yun-Jaie Choi, Do-Hyun Nam and Hyunggee Kim
Cancer Res March 1 2011 DOI: 10.1158/0008-5472.CAN-10-1495

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Frizzled 4 regulates stemness and invasiveness of migrating glioma cells established by serial intracranial transplantation
Xun Jin, Hee-Young Jeon, Kyeung Min Joo, Jun-Kyum Kim, Juyoun Jin, Sung-Hak Kim, Bong Gu Kang, Samuel Beck, Se Jeong Lee, Joong Kyu Kim, Ae-Kyung Park, Woong Yang Park, Yun-Jaie Choi, Do-Hyun Nam and Hyunggee Kim
Cancer Res March 1 2011 DOI: 10.1158/0008-5472.CAN-10-1495
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Cancer Research Online ISSN: 1538-7445
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