Preliminary Structure-Activity Relationship (SAR) of a Novel Series of Pyrazole SKF-96365 Analogues as Potential Store-Operated Calcium Entry (SOCE) Inhibitors.

From a series of (1, 1)-1[β-(phenylalkoxy)-(phenetyl)]-1-pyrazolium hydrochloride as new analogues of SKF-96365, one has an interesting effect for endoplasmic reticulum (ER) Ca release and store-operated Ca entry (SOCE) (IC 25 μM) on the PLP-B lymphocyte cell line. A successful resolution of (±) 1-phenyl-2-(1-pyrazol-1-yl)ethan-1-ol has been developed by using the method of "half-concentration" in the presence of (+)-(1)- or (-)-(1)-CSA.

Calcium signaling and cell fate: how can Ca2+ signals contribute to wrong decisions for Chronic Lymphocytic Leukemic B lymphocyte outcome?

Ca(2+) signaling is a key regulator of B lymphocyte cell fate and defects in this signaling pathway have been reported in numerous diseases such as Chronic lymphocytic leukemia (CLL). CLL is a B cell clonal disorder characterized by the accumulation of mature monoclonal CD5(+) B cells. Although CLL could be considered to be a proliferative disease, most circulating CLL B cells are arrested in the G0 phase of the cell cycle and present both defects in calcium (Ca(2+)) homeostasis and signaling.