Ligands to the (IRAP)/AT4 receptor encompassing a 4-hydroxydiphenylmethane scaffold replacing Tyr2
2008 (English)In: Bioorganic & Medicinal Chemistry, ISSN 0968-0896, E-ISSN 1464-3391, Vol. 16, no 14, 6924-6935 p.Article in journal (Refereed) Published
Analogues of the hexapeptide angiotensin IV (Ang IV, Val(1)-Tyr(2)-Ile(3)-His(4)-Pro(5)-Phe(6)) encompassing a 4-hydroxydiphenylmethane scaffold replacing Tyr(2) and a phenylacetic or benzoic acid moiety replacing His(4)-Pro(5)-Phe(6) have been synthesized and evaluated in biological assays. The analogues inhibited the proteolytic activity of cystinyl aminopeptidase (CAP), frequently referred to as the insulin-regulated aminopeptidase (IRAP), and were found less efficient as inhibitors of aminopeptidase N (AP-N). The best Ang IV mimetics in the series were approximately 20 times less potent than Ang IV as IRAP inhibitors. Furthermore, it was found that the ligands at best exhibited a 140 times lower binding affinity to the membrane-bound IRAP/AT4 receptor than Ang IV. Although the best compounds still exert lower activities than Ang IV, it is notable that these compounds comprise only two amino acid residues and are considerably less peptidic in character than the majority of the Ang IV analogues previously reported as IRAP inhibitors in the literature.
Place, publisher, year, edition, pages
2008. Vol. 16, no 14, 6924-6935 p.
Angiotensin IV, Insulin-regulated aminopeptidase (IRAP), Cystinyl aminopeptidase (CAP), Aminopeptidase N (AP-N), Structure–activity relationship, Peptide synthesis, Peptide mimetic, 4-Hydroxydiphenylmethane, Tyrosine mimetic
IdentifiersURN: urn:nbn:se:uu:diva-102954DOI: 10.1016/j.bmc.2008.05.046ISI: 000257829600031PubMedID: 18556208OAI: oai:DiVA.org:uu-102954DiVA: diva2:217098