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Functionally Active Gap Junctions between Connexin 43-Positive Mesenchymal Stem Cells and Glioma Cells
A N Gabashvili1, V P Baklaushev, N F Grinenko
1Department of Medical Nanobiotechnologies, Medico-Biological Faculty, N. I. Pirogov Russian National Research Medical University, Moscow, Russia, gabashvili.anna@gmail.com.
Bulletin of Experimental Biology and Medicine
|June 3, 2015
Summary
Mesenchymal stem cells form functional gap junctions with glioma cells, enabling substance transfer. This discovery offers potential for novel high-grade glioma cell therapies.
Area of Science:
- Neuroscience
- Cell Biology
- Biomedical Engineering
Background:
- Gliomas are primary brain tumors with limited treatment options.
- Mesenchymal stem cells (MSCs) show potential for targeted drug delivery and tumor treatment.
- Gap junctions play crucial roles in cell communication and tissue homeostasis.
Purpose of the Study:
- To investigate the formation and function of gap junctions between MSCs and C6 glioma cells.
- To assess the potential of MSC-glioma cell communication for therapeutic applications.
Main Methods:
- In vitro co-culturing of MSCs and C6 glioma cells.
- Immunocytochemistry using antibodies against connexin 43.
- Cell migration assays.
- Fluorescence microscopy and fluorometry for dye and substance transport analysis.
Main Results:
- Both MSCs and C6 glioma cells express connexin 43, a key gap junction protein.
- MSCs actively migrate towards C6 glioma cells.
- Functionally active heterologous gap junctions form between MSCs and glioma cells, allowing cytoplasmic dye transfer.
- The rate of substance transport through heterologous gap junctions is comparable to homologous junctions.
Conclusions:
- MSCs and glioma cells form functional gap junctions, facilitating intercellular communication.
- This intercellular communication mechanism holds promise for developing innovative cell-based therapies for high-grade gliomas.
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