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    Neuronal calcium sensor-1 enhancement of InsP3 receptor activity is inhibited by therapeutic levels of lithium

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    Schlecker et al.pdf (916.1Kb)
    Date
    2006-06
    Author
    Schlecker, Christina  Concept link
    Boehmerle, Wolfgang  Concept link
    Jeromin, Andreas  Concept link
    DeGray, Brenda  Concept link
    Varshney, Anurag  Concept link
    Sharma, Yogendra  Concept link
    Szigeti-Buck, Klara  Concept link
    Ehrlich, Barbara E.  Concept link
    Metadata
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    Citable URI
    https://hdl.handle.net/1912/1533
    As published
    https://doi.org/10.1172/JCI22466
    DOI
    10.1172/JCI22466
    Abstract
    Regulation and dysregulation of intracellular calcium (Ca2+) signaling via the inositol 1,4,5-trisphosphate receptor (InsP3R) has been linked to many cellular processes and pathological conditions. In the present study, addition of neuronal calcium sensor-1 (NCS-1), a high-affinity, low-capacity, calcium-binding protein, to purified InsP3R type 1 (InsP3R1) increased the channel activity in both a calcium-dependent and -independent manner. In intact cells, enhanced expression of NCS-1 resulted in increased intracellular calcium release upon stimulation of the phosphoinositide signaling pathway. To determine whether InsP3R1/NCS-1 interaction could be functionally relevant in bipolar disorders, conditions in which NCS-1 is highly expressed, we tested the effect of lithium, a salt widely used for treatment of bipolar disorders. Lithium inhibited the enhancing effect of NCS-1 on InsP3R1 function, suggesting that InsP3R1/NCS-1 interaction is an essential component of the pathomechanism of bipolar disorder.
    Description
    Author Posting. © American Society for Clinical Investigation, 2006. This article is posted here by permission of American Society for Clinical Investigation for personal use, not for redistribution. The definitive version was published in Journal of Clinical Investigation 116 (2006): 1668-1674, doi:10.1172/JCI22466.
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    Suggested Citation
    Journal of Clinical Investigation 116 (2006): 1668-1674
     
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