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Cojocaru F, Şelescu T, Domocoş D, Măruţescu L, Chiritoiu G, Chelaru NR, Dima S, Mihăilescu D, Babes A, Cucu D. Functional expression of the transient receptor potential ankyrin type 1 channel in pancreatic adenocarcinoma cells. Sci Rep 2021; 11:2018. [PMID: 33479347 PMCID: PMC7819973 DOI: 10.1038/s41598-021-81250-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Accepted: 01/03/2021] [Indexed: 11/09/2022] Open
Abstract
The transient receptor potential ankyrin type 1 (TRPA1) channel belongs to the TRP superfamily of ion channels. TRPA1 is a membrane protein with multiple functions able to respond to noxious stimuli, reactive oxygen species, inflammatory cytokines or pungent substances, and it participates in pain signalling, taste, inflammation and various steps of the tumorigenic process. To date, no reports have addressed the expression and function of TRPA1 in pancreatic ductal adenocarcinoma (PDAC) cells. This work reports the endogenous expression of TRPA1 channels in human pancreatic adenocarcinoma cell lines and provides insights into the function of the TRPA1 protein in the Panc-1 cell line. This study reports that cell lines isolated from PDAC patients had different levels of TRPA1 expression. The channel activity in Panc-1 cells, as assessed with electrophysiological (whole-cell patch clamp) and microfluorimetry methods, showed that non-selective cationic currents were activated by allyl isothiocyanate (AITC) in Panc-1 cells and inhibited by the selective TRPA1 antagonist A-967079. The current elicited by the specific agonist was associated with a robust increase in intracellular Ca2+. Furthermore, siRNA-induced downregulation of TRPA1 enhanced cell migration in the wound healing assay, indicating a possible role of ion channels independent from pore function. Finally, TRPA1 activation changed the cell cycle progression. Taken together, these results support the idea of channel-dependent and independent role for TRPA1 in tumoral processes.
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Affiliation(s)
- Florentina Cojocaru
- Department DAFAB, Faculty of Biology, University of Bucharest, Splaiul Independenței 91-95, Bucharest, Romania
| | - Tudor Şelescu
- Department DAFAB, Faculty of Biology, University of Bucharest, Splaiul Independenței 91-95, Bucharest, Romania
| | - Dan Domocoş
- Department DAFAB, Faculty of Biology, University of Bucharest, Splaiul Independenței 91-95, Bucharest, Romania
| | - Luminiţa Măruţescu
- Faculty of Biology, Research Institute of the University of Bucharest (ICUB), University of Bucharest, Bucharest, Romania
| | - Gabriela Chiritoiu
- Department of Molecular Cell Biology, Institute of Biochemistry, Romanian Academy, Splaiul Independenței 296, 060031, Bucharest, Romania
| | - Nicoleta-Raluca Chelaru
- Center of Excellence in Translational Medicine, Fundeni Clinical Institute, 022328, Bucharest, Romania
| | - Simona Dima
- Center of Excellence in Translational Medicine, Fundeni Clinical Institute, 022328, Bucharest, Romania
| | - Dan Mihăilescu
- Department DAFAB, Faculty of Biology, University of Bucharest, Splaiul Independenței 91-95, Bucharest, Romania
| | - Alexandru Babes
- Department DAFAB, Faculty of Biology, University of Bucharest, Splaiul Independenței 91-95, Bucharest, Romania.
| | - Dana Cucu
- Department DAFAB, Faculty of Biology, University of Bucharest, Splaiul Independenței 91-95, Bucharest, Romania.
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