Abstract
MicroRNAs (miRNAs) have been proven to regulate gene expression at post-transcriptional level and are emerging as strong mediators in neural fate determination (Ambros, Nature 431(7006):350–355, 2004). Here, we evaluated appropriate 3 three dimensional (3D) substrates to differentiate human neural stem cells (hNSCs). We identified and quantified hNSC miRNA contents by PCR array. By using computational algorithms we predicted miRNA target mRNA which correlates with hNSC differentiation and performed target validation by transfection of 3 prime untranslated regions (3′UTR) dual reporter plasmids and dual luciferase assay. Despite the inherent differences between cultures, we were able to consistently show that 3D topography promotes differentiation of hNSCs through modulation of miRNAs associated with cell proliferation and maintenance of stemness.
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- 1 W:
-
1 Week
- 2D:
-
Two dimensional
- 3 W:
-
3 Weeks
- 3′UTR:
-
3 Prime untranslated region
- 3D:
-
Three dimensional
- 4-OHT:
-
4-Hydroxytamoxifen
- bFGF:
-
Basic fibroblast growth factor
- DCX:
-
Doublecortin
- EGF:
-
Epidermal growth factor receptor
- GALC:
-
Galactosylceramidase
- GFAP:
-
Glial fibrillary acidic protein
- HNSC:
-
Human neural stem cell
- Hsa-miR:
-
Human miRNA
- ICC:
-
Immunocytochemistry
- MAP2:
-
Microtubule-associated protein 2
- miRNA:
-
MicroRNA
- mRNA:
-
Messenger RNA
- QRT-PCR:
-
Real-time reverse transcription PCR
- S100B:
-
S100 calcium binding protein B
- TUBB3:
-
Tubulin, beta 3 class III
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Acknowledgement
This study was supported by ReNeuron (RENE.L). We acknowledge Julie Heward for helping in the preparation of hNSCs.
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Stevanato, L., Hicks, C., Thanabalasundaram, L., Sinden, J.D. (2017). MicroRNA Expression Profiling by PCR Array in 2D and 3D Differentiated Neural Culture Systems and Target Validation. In: Kye, M. (eds) MicroRNA Technologies. Neuromethods, vol 128. Humana Press, New York, NY. https://doi.org/10.1007/7657_2017_1
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DOI: https://doi.org/10.1007/7657_2017_1
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