Halima Ouadid-Ahidouch

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We have previously reported that the hEAG K(+) channels are responsible for the potential membrane hyperpolarization that induces human breast cancer cell progression into the G1 phase of the cell cycle. In the present study, we evaluate the role and functional expression of the intermediate-conductance Ca(2+)-activated K(+) channel, hIK1-like, in(More)
BACKGROUND TRP channels have been shown to be involved in tumour generation and malignant growth. However, the expression of these channels in breast cancer remains unclear. Here we studied the expression and function of endogenous TRPC6 channels in a breast cancer cell line (MCF-7), a human breast cancer epithelial primary culture (hBCE) and in normal and(More)
BACKGROUND Ca2+ is a ubiquitous messenger that has been shown to be responsible for controlling numerous cellular processes including cell growth and cell death. Whereas the involvement of IP3-induced Ca2+ signalling (IICS) in the physiological activity of numerous cell types is well documented, the role of IICS in cancer cells is still largely unknown. Our(More)
In the present study, we investigated the effect of the antiestrogen compound tamoxifen on BK channels by the use of the patch-clamp technique. The perfusion of 10 nM tamoxifen significantly increased the magnitude of a voltage-dependent K+ current by 22.6 +/- 10.6% (n = 23). The effect of tamoxifen was always obtained in the first minute, peaked at 5.9 +/-(More)
Cancer involves defects in the mechanisms underlying cell proliferation, death and migration. Calcium ions are central to these phenomena, serving as major signalling agents with spatial localization, magnitude and temporal characteristics of calcium signals ultimately determining cell's fate. Cellular Ca(2+) signalling is determined by the concerted action(More)
BACKGROUND The calcium-permeable cation channel TRPM8 (melastatin-related transient receptor potential member 8) is over-expressed in several cancers. The present study aimed at investigating the expression, function and potential regulation of TRPM8 channels by ER alpha (estrogen receptor alpha) in breast cancer. METHODS RT-PCR, Western blot,(More)
K(+) ions play a major role in many cellular processes. The deregulation of K(+) signaling is associated with a variety of diseases such as hypertension, atherosclerosis, or diabetes. K(+) ions are important for setting the membrane potential, the driving force for Ca(2+) influx, and regulate volume of growing cells. Moreover, it is increasingly recognized(More)
K+ ions play a major role in many cellular processes. The deregulation of K+ signaling is associated with a variety of diseases including cancer. Ether-à-go-go-1 (Eag1, Kv10.1, KCNH1) is a member of the voltage-activated potassium channel family and was the first K+ channel to be associated with oncogenesis and tumor development. Interestingly, in healthy(More)
sp²-Iminosugar-type castanospermine analogues have been shown to exhibit anti-tumor activity. However, their effects on cell proliferation and apoptosis and the molecular mechanism at play are not fully understood. Here, we investigated the effect of two representatives, namely the pseudo-S- and C-octyl glycoside 2-oxa-3-oxocastanospermine derivatives(More)
Orai channels have been associated with cell proliferation, survival and metastasis in several cancers. The present study investigates the expression and the role of Orai3 in cell proliferation in non-small cell lung cancer (NSCLC). We show that Orai3 is over-expressed in cancer tissues as compared to the non-tumoral ones. Furthermore, Orai3 staining is(More)