Novel anti-apoptotic microRNAs 582-5p and 363 promote human glioblastoma stem cell survival via direct inhibition of caspase 3, caspase 9, and bim
Glioblastoma is the most common and lethal primary brain tumor. Tumor initiation and recurrence are likely caused by a sub-population of glioblastoma stem cells, which may derive from mutated neural stem and precursor cells. Since CD133 is a stem cell marker for both normal brain and glioblastoma, a...
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| Main Authors: | , , , , , , , , , , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
May 7, 2014
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| In: |
PLOS ONE
Year: 2014, Volume: 9, Issue: 5 |
| ISSN: | 1932-6203 |
| DOI: | 10.1371/journal.pone.0096239 |
| Online Access: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1371/journal.pone.0096239 Verlag, lizenzpflichtig, Volltext: https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0096239 
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| Author Notes: | Desiree Hunt Floyd, Ying Zhang, Bijan K. Dey, Benjamin Kefas, Hannah Breit, Kaitlyn Marks, Anindya Dutta, Christel Herold-Mende, Michael Synowitz, Rainer Glass, Roger Abounader, Benjamin W. Purow |
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| 245 | 1 | 0 | |a Novel anti-apoptotic microRNAs 582-5p and 363 promote human glioblastoma stem cell survival via direct inhibition of caspase 3, caspase 9, and bim |c Desiree Hunt Floyd, Ying Zhang, Bijan K. Dey, Benjamin Kefas, Hannah Breit, Kaitlyn Marks, Anindya Dutta, Christel Herold-Mende, Michael Synowitz, Rainer Glass, Roger Abounader, Benjamin W. Purow |
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| 520 | |a Glioblastoma is the most common and lethal primary brain tumor. Tumor initiation and recurrence are likely caused by a sub-population of glioblastoma stem cells, which may derive from mutated neural stem and precursor cells. Since CD133 is a stem cell marker for both normal brain and glioblastoma, and to better understand glioblastoma formation and recurrence, we looked for dys-regulated microRNAs in human CD133+ glioblastoma stem cells as opposed to CD133+ neural stem cells isolated from normal human brain. Using FACS sorting of low-passage cell samples followed by microRNA microarray analysis, we found 43 microRNAs that were dys-regulated in common in three separate CD133+ human glioblastomas compared to CD133+ normal neural stem cells. Among these were several microRNAs not previously associated with cancer. We then verified the microRNAs dys-regulated in glioblastoma using quantitative real time PCR and Taqman analysis of the original samples, as well as human GBM stem cell and established cell lines and many human specimens. We show that two candidate oncogenic microRNAs, miR-363 and miR-582-5p, can positively influence glioblastoma survival, as shown by forced expression of the microRNAs and their inhibitors followed by cell number assay, Caspase 3/7 assay, Annexin V apoptosis/fluorescence activated cell sorting, siRNA rescue of microRNA inhibitor treatment, as well as 3′UTR mutagenesis to show luciferase reporter rescue of the most successful targets. miR-582-5p and miR-363 are shown to directly target Caspase 3, Caspase 9, and Bim. | ||
| 650 | 4 | |a Apoptosis | |
| 650 | 4 | |a Carcinogenesis | |
| 650 | 4 | |a Glioblastoma multiforme | |
| 650 | 4 | |a Malignant tumors | |
| 650 | 4 | |a MicroRNAs | |
| 650 | 4 | |a Stem cell lines | |
| 650 | 4 | |a Stem cell therapy | |
| 650 | 4 | |a Transfection | |
| 700 | 1 | |a Zhang, Ying |e VerfasserIn |4 aut | |
| 700 | 1 | |a Dey, Bijan K. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Kefas, Benjamin |e VerfasserIn |4 aut | |
| 700 | 1 | |a Breit, Hannah |e VerfasserIn |4 aut | |
| 700 | 1 | |a Marks, Kaitlyn |e VerfasserIn |4 aut | |
| 700 | 1 | |a Dutta, Anindya |e VerfasserIn |4 aut | |
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| 700 | 1 | |a Purow, Benjamin W. |e VerfasserIn |4 aut | |
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