Journal
NEUROLOGY INDIA
Volume 59, Issue 2, Pages 241-247Publisher
MEDKNOW PUBLICATIONS & MEDIA PVT LTD
DOI: 10.4103/0028-3886.79134
Keywords
Umbilical cord blood; mesenchymal stem cells; C6 glioma; inhibition
Categories
Funding
- Program for New Century Excellent Talents in University [NECT-06-0611]
- Zhengzhou University
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Aims and Background: Glioma is difficult to treat and despite advances, outcomes remain poor and new treatment modalities are required. We studied the inhibitive effects of human umbilical cord blood-derived mesenchymal stem cells (UCB-MSCs) on glioma growth. Material and Methods: UCB-MSCs were identified in mice by flow cytometric analysis, and neurogenic differentiation by immunohistochemistry. C6 cells were injected subcutaneously into the posterior right flank of each mouse. Dil-labeled UCB-MSCs were administrated by intravenous (IV) or intratumoral (IT) injection. Tumor blood vessel density was detected by counting the number of CD34-positive cells with endothelial morphology. Cyclin D1 protein expression was detected by immunohistochemistry and Western blot analysis. Results: A 26% reduction in overall tumor volume was observed after IV UCB-MSCs treatment, 36% in animals who received IT UCB-MSCs. UCB-MSC administration was associated with reduced neovascularization. We identified a 48% and 27% reduction in the number of cyclin D1-positive cells in mouse glioma tissues treated with UCB-MSCs IV and IT, respectively. Conclusion: We demonstrated that UCB-MSCs potently inhibit glioma growth, reduce neovascularization, and decrease cyclin D1 protein expression in vivo. IV or IT UCB-MSC administration significantly inhibits glioma growth, and may represent a promising new therapy.
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