Influences of Histidine-1 and Azaphenylalanine-4 on the Affinity, Anti-inflammatory, and Antiangiogenic Activities of Azapeptide Cluster of Differentiation 36 Receptor Modulators
作者:Kelvine Chignen Possi、Mukandila Mulumba、Samy Omri、Yesica Garcia-Ramos、Houda Tahiri、Sylvain Chemtob、Huy Ong、William D. Lubell
DOI:10.1021/acs.jmedchem.7b01209
日期:2017.11.22
of the 1- and 4-position residues on the affinity, anti-inflammatory, and antiangiogenic activity of these azapeptides have now been studied in detail by the synthesis and analysis of a set of 25 analogues featuring Ala1 or His1 and a variety of aromatic side chains at the aza-amino acid residue in the 4-position. Although their binding affinities differed only by a factor of 17, the analogues exhibited
生长激素释放肽6(GHRP-6)的Azapeptide类似物在分化36受体(CD36)的簇上显示出有希望的亲和力,选择性和调节剂活性。例如,先前显示[A 1,azaF 4 ]-和[azaY 4 ] -GHRP-6(1a和2b)与CD36选择性结合,并且在使用脉络膜外植体的微血管发芽试验中分别显示出显着的抗血管生成和轻微的血管生成活性。 。现在,通过合成和分析一组25个以Ala 1或His为特征的类似物,详细研究了1和4位残基对这些氮杂肽的亲和力,抗炎和抗血管生成活性的影响。1和在4-位的氮杂氨基酸残基处的各种芳族侧链。尽管它们的结合亲和力仅相差17倍,但这些类似物在巨噬细胞和脉络膜新生血管形成中调节一氧化氮(NO)产生的能力方面却表现出显着差异。