ArticleInternational archives of allergy and immunology2022
Expression of T-Type Voltage-Gated Calcium Channel in the Cilia of Human Nasal Epithelial Cells.
Article in International archives of allergy and immunology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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2 citing papers in PubMed, 3 citations in OpenAlex.
- CACNA1G, A Heterotaxy Candidate Gene, Plays a Role in Ciliogenesis and Left-Right Patterning in Xenopus tropicalis.Genesis (New York, N.Y. : 2000) · 2025Article
- TRPA1/M8 agonists upregulate ciliary beating through the pannexin-1 channel in the human nasal mucosa.Molecular biology reports · 2023Article
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7 authors at 1 institution in 2 countries.
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No grant is acknowledged in the PubMed record.
Abstract
introductionThe mucociliary transport function of the airway epithelium is largely dependent on ciliary beating. The control signal of ciliary beating is thought to be intracellular Ca2+. We herein investigated the expression of T-type voltage-gated calcium channel (VGCC), a generator of intracellular Ca2+ oscillation, in the human nasal mucosa.
methodsThe inferior turbinate was collected from patients with chronic hypertrophic rhinitis. The expression of T-type VGCC α1 subunits was examined by immunohistochemistry, transmission immunoelectron microscopy, Western blot, and real-time reverse transcription-polymerase chain reaction (RT-PCR). Participation of T-type VGCC in the ciliary beat regulation was examined by pharmacological inhibition tests using specific blockers of T-type VGCC in ex vivo measurements of the ciliary beat frequency (CBF) and ATP release and in intracellular Ca2+ imaging of isolated ciliated cells.
resultsImmunohistochemical staining showed the expressions of T-type VGCC α1 subunits, Cav3.1 and Cav3.3, on the surface of the epithelial cells. At the ultrastructural level, immunoreactivity for Cav3.1 was localized on the surface of the cilia, and that for Cav3.3 was localized in the cilia and at the base of the cilia. The existence of Cav3.1 and Cav3.3 was confirmed at the protein level by Western blot and at the transcriptional level by real-time RT-PCR. Specific blockers of T-type VGCC, mibefradil and NNC 55-0396, significantly inhibited CBF. These blockers also inhibited a CBF increase induced by 8-bromo-cAMP/8-bromo-cGMP and significantly lowered the intracellular Ca2+ level of isolated ciliated cells in a time-dependent manner. On the other hand, the ATP release from the nasal mucosa was not changed by mibefradil or NNC 55-0396.
conclusionThese results indicate that T-type VGCC α1 subunits, Cav3.1 and Cav3.3, exist at the cilia of the nasal epithelial cells and participate in the regulation of ciliary beating and that these channels act downstream of cAMP/cGMP.
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