Department of Chemistry and Biochemistry, University of Bern, Freiestrasse 3, 3012 Bern, Switzerland.
Bioorg Med Chem. 2013 Jun 1;21(11):3202-13. doi: 10.1016/j.bmc.2013.03.037. Epub 2013 Apr 1.
2-Aminoethyl diphenylborinate (2-APB) is a known modulator of the IP3 receptor, the calcium ATPase SERCA, the calcium release-activated calcium channel Orai and TRP channels. More recently, it was shown that 2-APB is an efficient inhibitor of the epithelial calcium channel TRPV6 which is overexpressed in prostate cancer. We have conducted a structure-activity relationship study of 2-APB congeners to understand their inhibitory mode of action on TRPV6. Whereas modifying the aminoethyl moiety did not significantly change TRPV6 inhibition, substitution of the phenyl rings of 2-APB did. Our data show that the diaryl borinate moiety is required for biological activity and that the substitution pattern of the aryl rings can influence TRPV6 versus SOCE inhibition. We have also discovered that 2-APB is hydrolyzed and transesterified within minutes in solution.
2-氨基乙基二苯硼酸盐（2-APB）是已知的 IP3 受体、钙 ATP 酶 SERCA、钙释放激活钙通道 Orai 和 TRP 通道的调节剂。最近的研究表明，2-APB 是上皮钙通道 TRPV6 的有效抑制剂，TRPV6 在前列腺癌中过度表达。我们对 2-APB 同系物进行了结构-活性关系研究，以了解它们对 TRPV6 的抑制作用模式。虽然修饰氨基乙基部分不会显著改变 TRPV6 的抑制作用，但 2-APB 的苯环取代会影响 TRPV6 与 SOC 抑制的作用。我们的数据表明，二芳基硼酸盐部分是生物活性所必需的，芳环的取代模式可以影响 TRPV6 与 SOCE 的抑制作用。我们还发现，2-APB 在几分钟内在溶液中水解和酯交换。
