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N-Methylated sst2 Selective Somatostatin Cyclic Peptide Analogue as a Potent Candidate for Treating Neurogenic Inflammation

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journal contribution
posted on 14.07.2011, 00:00 by Jayanta Chatterjee, Burkhardt Laufer, Johannes G. Beck, Zsuzsanna Helyes, Erika Pintér, János Szolcsányi, Aniko Horvath, Jozsef Mandl, Jean C. Reubi, György Kéri, Horst Kessler
A focused multiply N-methylated library of a cyclic hexapeptidic somatostatin analogue: MK678 cyclo(−MeAYwKVF−) was generated, which resulted in the unexpected observation of an efficacious tetra-N-methylated analogue, cyclo(−MeAYMewMeKVMeF−) with a potent inhibitory action on sensory neuropeptide release in vitro and on acute neurogenic inflammatory response in vivo. The analogue shows selectivity toward somatostatin receptor subtype 2 (sst2). Extensive 2D NMR spectroscopy and molecular dynamics simulation revealed the solution conformation of the analogue, which can be adopted as a lead for the further structure−activity relationship studies targeting neurogenic inflammation.