Self-renewal, differentiation, and tumorigenicity characterize cancer stem cells (CSCs), which are rare and maintained by specific cell fate regulators. CSCs are isolated from glioblastoma multiforme (GBM) and may be responsible for the lethality of incurable brain tumors. Brain CSCs may arise from the transformation of undifferentiated, nestin-positive neural stem or progenitor cells and GFAP-expressing astrocytes. Here, we report a role of Nanog in the genesis of cancer stem-like cells. Using primary murine p53-knockout astrocytes (p53-/- astrocytes), we provide evidence that enforced Nanog expression can increase the cellular growth rate and transform phenotypes in vitro and in vivo. In addition, Nanog drives p53-/- astrocytes toward a dedifferentiated, CSC-like phenotype with characteristic neural stem cell/progenitor marker expression, neurosphere formation, self-renewal activity, and tumor development. These findings suggest that Nanog promotes dedifferentiation of p53-deficient mouse astrocytes into cancer stem-like cells by changing the cell fate and transforming cell properties.
|Number of pages||7|
|Journal||Biochemical and biophysical research communications|
|Publication status||Published - 2011 Aug 19|
Bibliographical noteFunding Information:
This research was supported by a Grant ( SC-5150 ) from the Stem Cell Research Center of the 21st Century Frontier Research Program funded by the Ministry of Education, Science and Technology, Republic of Korea , and by a Grant ( 2010-0020347 ) from the National Research Foundation (NRF) grant funded by the Republic of Korea Government (MEST).
- Brain cancer stem cell-like cells
- P53 Astrocytes
ASJC Scopus subject areas
- Molecular Biology
- Cell Biology