Berman JM, Chen TM, Sargent R, Buck SH, Shea P, Heminger EF, Broersma RJ. Design and synthesis of metabolically stable atrial natriuretic factor analogs. Amino- and carboxy-terminal stabilization.
FEBS Lett 1988;
237:76-80. [PMID:
2844589 DOI:
10.1016/0014-5793(88)80175-3]
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Abstract
Two analogs of rat atrial natriuretic factor, rANF7-28-NH2 and [Mpr7,Ala20,D-Arg27]rANF7-27-NH2, were prepared by the solid-phase method. These peptides had 2-fold and 7-fold less affinity, respectively, than rANF1-28 in binding to membranes prepared from cultured aortic smooth muscle cells, and both peptides were 5-fold less potent than rANF1-28 in relaxing serotonin-contracted rabbit aortic rings. rANF7-28-NH2 was rapidly degraded by rat kidney homogenates but [Mpr7,Ala20,D-Arg27]rANF7-27-NH2 had enhanced stability against rat kidney homogenate degradation. However, this in vitro stability did not translate into an extended duration of action in vivo.
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