α1-adrenergic receptors activate Ca2+-permeable cationic channels in prostate cancer epithelial cells
J. Clin. Invest. Stephanie Thebault, et al. 111:1691 doi:10.1172/JCI16293 [
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Figure 3Membrane-permeable DAG analogues induce [Ca
2+]
i signaling in LNCaP cells. (
a) [Ca
2+]
i oscillations in a representative LNCaP cell evoked by the membrane-permeable DAG analogue OAG (100 μM,
n = 37). (
b) OAG-evoked [Ca
2+]
i oscillations in a LNCaP cell disappear in nominally Ca
2+-free medium (0/Ca
2+,
n = 45). (
c and
d) Coapplications of cationic channel blockers SK&F 96365 (10 μM,
n = 15) (
c) and 2-APB (100 μM,
n = 24) (
d) suppress OAG-evoked [Ca
2+]
i oscillations in LNCaP cells. (
e) Representative transient [Ca
2+]
i increase induced in a LNCaP cell by another membrane-permeable DAG analogue, DOG (100 μM,
n = 23). [Ca
2+]
i signals were measured on Fura-2–loaded cells; all interventions on each panel are marked by horizontal bars.