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- W1548540209 abstract "ABSTRACT Our previous studies illustrated that a steady increase of intracellular calcium concentration ([Ca 2+ ]i) was important for maintaining microtubules (MTs) rearrangement in apoptotic cells. However, little is known about the effect of calcium sensing receptor (CaSR)‐mediated increase in [Ca 2+ ]i on cytoskeleton gene expression. We examined the impact of taxol or CaSR agonist/antagonist on the regulation of [Ca 2+ ]i concentration, cytoskeleton arrangement, phosphorylated CREB and cytoskeleton gene expressions in HeLa cells with dominant negative plasmid of CREB (PM). This study demonstrated that Gdcl3 (a specific CaSR agonist) evoked a rapid increase of [Ca 2+ ]i, formed a rigid bundle of MTs which surrounded the nucleus and decreased the cytoskeleton gene expressions in HeLa cells. These effects were rescued by addition of NPS2390 (a specific CaSR antagonist). Moreover, CaSR activity affected cytoskeleton gene expression through transcription factor CREB. Histoscores of pCREB immunoreactivity in tissues of cervical adenocarcinoma, renal clear cell carcinoma, and diffuse large B‐cell lymphoma were markedly increased compared with non malignant tissue. These data demonstrate, for the first time, that CaSR‐mediated increase in [Ca 2+ ]i probably modulate cytoskeleton organization and gene expression via transcription factor CREB. Anat Rec, 298:501–512, 2015. © 2014 Wiley Periodicals, Inc." @default.
- W1548540209 created "2016-06-24" @default.
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- W1548540209 date "2014-11-28" @default.
- W1548540209 modified "2023-10-16" @default.
- W1548540209 title "Transcription Factor CREB is Involved in CaSR-mediated Cytoskeleton Gene Expression" @default.
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- W1548540209 doi "https://doi.org/10.1002/ar.23089" @default.
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