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- Title
Identification of CD133/Telomerase Progenitor Cells in Glioblastoma-Derived Cancer Stem Cell Lines.
- Authors
Beier, Fabian; Beier, Christoph P.; Aschenbrenner, Ines; Hildebrandt, Gerhard C.; Brümmendorf, Tim H.; Beier, Dagmar
- Abstract
Glioblastoma multiforme (GBM) is paradigmatic for the investigation of cancer stem cells (CSC) in solid tumors. The CSC hypothesis implies that tumors are maintained by a rare subpopulation of CSC that gives rise to rapidly proliferating progenitor cells. Although the presence of progenitor cells is crucial for the CSC hypothesis, progenitor cells derived from GBM CSC are yet uncharacterized. We analyzed human CD133 CSC lines that were directly derived from CD133 primary astrocytic GBM. In these CSC lines, CD133/telomerase CSC give rise to non-tumorigenic, CD133/telomerase progenitor cells. The proliferation of the progenitor cell population results in significant telomere shortening as compared to the CD133 compartment comprising CSC. The average difference in telomere length as determined by a modified multi-color flow fluorescent in situ hybridization was 320 bp corresponding to 4-8 cell divisions. Taken together, we demonstrate that CD133 primary astrocytic GBM comprise proliferating, CD133/telomerase progenitor cell population characterized by low telomerase activity and shortened telomeres as compared to CSC.
- Subjects
TELOMERASE; GLIOBLASTOMA multiforme; STEM cells; ONCOLOGY; FLUORESCENCE in situ hybridization
- Publication
Cellular & Molecular Neurobiology, 2011, Vol 31, Issue 3, p337
- ISSN
0272-4340
- Publication type
Article
- DOI
10.1007/s10571-010-9627-4