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Published on: July 15, 2016
TRPC expression in mesenchymal stem cells
Frederic Torossian1, Aurelie Bisson, Jean-Pierre Vannier
1IFRMP, Institute for Biomedical Research, Inserm, U, University of Rouen, France.
Abstract:
Transient receptor potential canonical (TRPC) channels are key players in calcium homeostasis and various regulatory processes in cell biology. Little is currently known about the TRPC subfamily members in mesenchymal stem cells (MSC), where they could play a role in cell proliferation. We report on the presence of TRPC1, 2, 4 and 6 mRNAs in MSC. Western blot and immunofluorescence staining indicate a membrane and intracellular distribution of TRPC1. Furthermore, the decrease in the level of TRPC1 protein caused by RNA interference is accompanied by the downregulation of cell proliferation. These results indicate that MSC express TRPC1, 2, 4 and 6 mRNA and that TRPC1 may play a role in stem cell proliferation.
Insights
Mesenchymal stem cells (MSCs) express Transient Receptor Potential Canonical (TRPC) channels, including TRPC1. TRPC1 downregulation reduces MSC proliferation, suggesting its role in stem cell growth.
Area of Science:
- Cell Biology
- Stem Cell Biology
- Ion Channel Physiology
Background:
- Transient Receptor Potential Canonical (TRPC) channels are crucial for calcium homeostasis and cellular regulation.
- The role of TRPC channels in mesenchymal stem cells (MSCs) and their potential impact on proliferation remain largely unexplored.
Purpose of the Study:
- To investigate the expression of TRPC channel subfamily members in MSCs.
- To determine the specific role of TRPC1 in MSC proliferation.
Main Methods:
- Detection of TRPC1, 2, 4, and 6 mRNA in MSCs using RT-PCR.
- Western blot analysis and immunofluorescence staining to assess TRPC1 protein expression and localization.
- RNA interference (RNAi) to downregulate TRPC1 protein levels and assess effects on cell proliferation.
Main Results:
- TRPC1, 2, 4, and 6 mRNA were detected in MSCs.
- TRPC1 protein was found in both the membrane and intracellular compartments of MSCs.
- Downregulation of TRPC1 protein via RNAi led to a significant decrease in MSC proliferation.
Conclusions:
- MSCs express TRPC1, 2, 4, and 6 mRNA.
- TRPC1 protein is present in MSCs and plays a significant role in regulating stem cell proliferation.
