Literature DB >> 17446497

Inhibitory mechanism of SN-6, a novel benzyloxyphenyl Na+/Ca2+ exchange inhibitor.

Satomi Kita1, Takahiro Iwamoto.   

Abstract

We investigated the pharmacological properties of SN-6, a new selective Na+/Ca2+ exchanger (NCX) inhibitor. SN-6 preferentially inhibited the (45)Ca2+ uptake via NCX compared with the (45)Ca2+ efflux via NCX in NCX-transfected fibroblasts. SN-6 was three- to fivefold more inhibitory to the (45)Ca2+ uptake via NCX1 (IC50 = 2.9 microM) than to that via NCX2 or NCX3. Our chimeric and site-directed mutagenesis revealed that Phe-213, Val-227, Tyr-228, Gly-833, and Asn-839 in NCX1 are molecular determinants for interaction with SN-6. We also found that SN-6 potently protects against hypoxia/reoxygenation-induced cell damage in renal tubular cells.

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Year:  2007        PMID： 17446497     DOI： 10.1196/annals.1387.040

Source DB:  PubMed          Journal:  Ann N Y Acad Sci        ISSN： 0077-8923            Impact factor:   5.691


  5 in total

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  5 in total

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