Identification of Dysregulated microRNAs in Glioblastoma Stem-like Cells
Glioblastoma multiforme (GBM) is the most common malignant primary brain tumor in adults. Despite multimodal therapy, median survival is poor at 12–15 months. At the molecular level, radio-/chemoresistance and resulting tumor progression are attributed to a small fraction of tumor cells, termed glio...
সংরক্ষণ করুন:
| প্রধান লেখক: | , , , , , , |
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| বিন্যাস: | প্রবন্ধ |
| ভাষা: | ইংরেজি |
| প্রকাশিত: |
Philipps-Universität Marburg
2023
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| বিষয়গুলি: | |
| অনলাইন ব্যবহার করুন: | পিডিএফ এ সম্পূর্ন পাঠ |
| ট্যাগগুলো: |
কোনো ট্যাগ নেই, প্রথমজন হিসাবে ট্যাগ করুন!
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| সংক্ষিপ্ত: | Glioblastoma multiforme (GBM) is the most common malignant primary brain tumor in adults. Despite multimodal therapy, median survival is poor at 12–15 months. At the molecular level, radio-/chemoresistance and resulting tumor progression are attributed to a small fraction of tumor cells, termed glioblastoma stem-like cells (GSCs). These CD133-expressing, self-renewing cells display the properties of multi-lineage differentiation, resulting in the heterogenous composition of GBM. MicroRNAs (miRNAs) as regulators of gene expression at the post-transcriptional level can alter many pathways pivotal to cancer stem cell fate. This study explored changes in the miRNA expression profiles in patient-derived GSCs altered on differentiation into glial fiber acid protein (GFAP)-expressing, astrocytic tumor cells using a polymerase chain reaction (PCR) array. Initially, 22 miRNAs showed higher expression in GSCs and 9 miRNAs in differentiated cells. The two most downregulated miRNAs in differentiated GSCs were miR-17-5p and miR-425-5p, whilst the most upregulated miRNAs were miR-223-3p and let-7-5p. Among those, miR-425-5p showed the highest consistency in an upregulation in all three GSCs. By transfection of a 425-5p miRNA mimic, we demonstrated downregulation of the GFAP protein in differentiated patient-derived GBM cells, providing potential evidence for direct regulation of miRNAs in the GSC/GBM cell transition. |
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| উপাদানের বিবরণ: | Gefördert durch den Open-Access-Publikationsfonds der UB Marburg. |
| দৈহিক বর্ননা: | 13 Seiten |
| ডিওআই: | 10.3390/brainsci13020350 |