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Published on: August 12, 2015
Silencing TRPC1 expression inhibits invasion of CNE2 nasopharyngeal tumor cells
Benfu He1, Feiye Liu, Jian Ruan
1Department of Oncology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, PR China.
Abstract:
The invasion and metastasis processes involved in nasopharyngeal carcinoma (NPC) remain enigmatic. Transient receptor potential channel-related protein 1 (TRPC1) is a cation channel involved in diverse cellular functions by precisely controlling Ca2+. The role of this unique TRPC member in nasopharyngeal malignancies has not yet been delineated. Here, we downregulated TRPC1 in CNE2 cells by RNAi technology and by using 2-APB, an inhibitor of the inositol 1,4,5-trisphosphate (IP3) receptor and of store-operated Ca2+ channel-mediated Ca2+ entry. Both types of TRPC1 inhibition resulted in significantly attenuated adhesive and invasive abilities, suggesting that TRPC1 can modulate the metastasis of NPC. These findings support further investigation of the potential of TRPC1 as a novel therapeutic target for intervention in nasopharyngeal carcinoma.
Insights
Transient Receptor Potential Channel 1 (TRPC1) inhibition reduced metastasis in nasopharyngeal carcinoma (NPC) cells. Downregulating TRPC1 attenuated cell adhesion and invasion, suggesting its potential as a therapeutic target for NPC.
Area of Science:
- Oncology
- Molecular Biology
- Cell Biology
Background:
- Nasopharyngeal carcinoma (NPC) metastasis mechanisms are not fully understood.
- Transient Receptor Potential Channel 1 (TRPC1) regulates cellular functions via calcium (Ca2+) signaling.
- The specific role of TRPC1 in NPC progression remains uninvestigated.
Purpose of the Study:
- To investigate the role of TRPC1 in nasopharyngeal carcinoma (NPC) cell adhesion and invasion.
- To determine if TRPC1 can be a potential therapeutic target for NPC metastasis.
Main Methods:
- TRPC1 was downregulated in CNE2 NPC cells using RNA interference (RNAi).
- TRPC1 function was inhibited using 2-APB, a blocker of IP3 receptors and store-operated calcium entry.
- Cellular adhesive and invasive properties were assessed after TRPC1 inhibition.
Main Results:
- Downregulation of TRPC1 significantly reduced the adhesive capabilities of NPC cells.
- Inhibition of TRPC1 led to a significant decrease in NPC cell invasiveness.
- Both RNAi-mediated TRPC1 downregulation and 2-APB treatment demonstrated similar effects on NPC cell metastasis.
Conclusions:
- TRPC1 plays a significant role in modulating the metastatic potential of nasopharyngeal carcinoma.
- TRPC1 inhibition attenuates NPC cell adhesion and invasion.
- TRPC1 represents a promising novel therapeutic target for combating NPC metastasis.
