Design and synthesis of dipeptide mimetics of the brain-derived neurotrophic factor
作者:T. A. Gudasheva、A. V. Tarasyuk、S. V. Pomogaibo、I. O. Logvinov、P. Yu. Povarnina、T. A. Antipova、S. B. Seredenin
DOI:10.1134/s1068162012030053
日期:2012.5
neuroprotective activity only for dimeric mimetics correlates with the data that BDNF is active only in homodimeric form. As opposed to dimeric mimetic of loop 1 GSB-214, dimeric mimetic of loop 4 GSB-106 demonstrates specific for BDNF antidepressive activity in Porsolt test on rats in doses 0.1 and 1 mg/kg i.p. It is suggested that antidepressive activity of BDNF is associated with its loop 4. We consider
构建并合成了脑源性神经营养因子(BDNF)环1和4的低分子模拟物,它们代表N-酰基肽的酰胺和二聚酰胺。这些二肽的序列与神经营养蛋白序列的相应环的β-转弯的中心区域共存,并且酰基是先前氨基酸残基的生物等排体。六亚甲基和七亚甲基二胺用作连接BDNF二聚体模拟物中二肽C端的间隔基。这些物质是通过溶液中的经典肽合成方法合成的,实验室代码为GSB-104(HO-Suc-Ser-Lys-NH2),GSB-106([HO-Suc-Ser-Lys-NH-(CH2)3- ] 2),GSB-207(HO-Suc-Met-Ser-NH2)和GSB-214([HO-Suc-Met-Ser-NH-(CH2)7 / 2-] 2)。通过在氧化应激条件下使用永生化海马细胞株HT-22的培养,表明两个环的二聚体模拟物在10(-5)-10(-8)M的浓度范围内均表现出神经保护活性。单体环1模拟的GSB-207在相同浓度下是无