Open Access

TRPC1 stimulates calcium‑sensing receptor‑induced store‑operated Ca2+ entry and nitric oxide production in endothelial cells

  • Authors:
    • Yuan‑Yuan Qu
    • La‑Mei Wang
    • Hua Zhong
    • Yong‑Min Liu
    • Na Tang
    • Li‑Ping Zhu
    • Fang He
    • Qing‑Hua Hu
  • View Affiliations

  • Published online on: August 4, 2017     https://doi.org/10.3892/mmr.2017.7164
  • Pages: 4613-4619
  • Copyright: © Qu et al. This is an open access article distributed under the terms of Creative Commons Attribution License.

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Abstract

Store‑operated Ca2+ entry (SOCE) via store‑operated Ca2+ channels (SOCC), encoded by transient receptor potential canonical (TRPC) channel proteins, is an important underlying mechanism regulating intracellular Ca2+ concentration ([Ca2+]i) and various intracellular functions in endothelial cells (ECs). TRPC1, the probable candidate for SOCC, is expressed in ECs. Ca2+‑sensing receptor (CaSR) is functionally expressed in vascular endothelium and is important in Ca2+ mobilization and cardiovascular functions. To date, there have been no reports demonstrating an association between CaSR and TRPC1 in ECs. The present study investigated the effects of TRPC1 on CaSR‑induced Ca2+ influx and nitric oxide (NO) production in human umbilical vein ECs (HUVECs). TRPC1 and CaSR proteins in HUVECs were measured by immunostaining and western blot analysis. [Ca2+]i levels were measured using the Fura‑2‑acetoxymethyl ester method. The indicator 3‑amino, 4‑aminomethyl‑2, 7‑difluorescein diacetate was used to measure NO production in HUVECs. The expression of TRPC1 protein in HUVECs was silenced by transfecting HUVECs with small interfering RNA (siRNA) against TRPC1. Although changes in extracellular Ca2+ failed to alter [Ca2+]i in HUVECs, the CaSR agonist spermine increased [Ca2+]i and NO production in HUVECs. NO production in HUVECs was diminished in Ca2+‑free medium or following treatment with a CaSR negative allosteric modulator (Calhex231), SOCC inhibitor (MRS1845) or TRPC inhibitor (SKF96365). The spermine‑induced increases in [Ca2+]i and NO production were reduced in HUVECs transfected with TRPC1 siRNA. These results suggested that TRPC1 is a primary candidate in forming SOCC that stimulates CaSR‑induced SOCE and NO production in HUVECs and is a potential therapeutic target for vascular diseases.

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October-2017
Volume 16 Issue 4

Print ISSN: 1791-2997
Online ISSN:1791-3004

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Copy and paste a formatted citation
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Spandidos Publications style
Qu YY, Wang LM, Zhong H, Liu YM, Tang N, Zhu LP, He F and Hu QH: TRPC1 stimulates calcium‑sensing receptor‑induced store‑operated Ca2+ entry and nitric oxide production in endothelial cells. Mol Med Rep 16: 4613-4619, 2017.
APA
Qu, Y., Wang, L., Zhong, H., Liu, Y., Tang, N., Zhu, L. ... Hu, Q. (2017). TRPC1 stimulates calcium‑sensing receptor‑induced store‑operated Ca2+ entry and nitric oxide production in endothelial cells. Molecular Medicine Reports, 16, 4613-4619. https://doi.org/10.3892/mmr.2017.7164
MLA
Qu, Y., Wang, L., Zhong, H., Liu, Y., Tang, N., Zhu, L., He, F., Hu, Q."TRPC1 stimulates calcium‑sensing receptor‑induced store‑operated Ca2+ entry and nitric oxide production in endothelial cells". Molecular Medicine Reports 16.4 (2017): 4613-4619.
Chicago
Qu, Y., Wang, L., Zhong, H., Liu, Y., Tang, N., Zhu, L., He, F., Hu, Q."TRPC1 stimulates calcium‑sensing receptor‑induced store‑operated Ca2+ entry and nitric oxide production in endothelial cells". Molecular Medicine Reports 16, no. 4 (2017): 4613-4619. https://doi.org/10.3892/mmr.2017.7164