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Updated: Jul 4, 2026

Production and Testing of Antimicrobial Peptides and Their Mimics
Published on: April 10, 2026
Aranciamycin analogs generated by combinatorial biosynthesis show improved antitumor activity
Andriy Luzhetskyy1, Jens Hoffmann, Stefan Pelzer
1Albert-Ludwigs-Universität, Institut für Pharmazeutische Wissenschaften, Stefan-Meier-Strasse 19, Freiburg, Germany.
Abstract:
Expression of the aranciamycin biosynthetic gene cluster in Streptomyces diastatochromogenes Tü6028 resulted in production of four novel compounds, aranciamycins E, F, G, and H with different decorations in the tetracyclic backbone. Two derivatives contain a D-amicetose moiety at C7 (aranciamycins F and G), two are hydroxylated at position C1 (aranciamycins E and G), and one is hydroxylated at C13 (aranciamycin F). Analysis of the biological activities of the aranciamycins against two human tumor cell lines--MCF-7 and MATU--shows surprising impact of the hydroxyl group at position C1 on activity. As aranciamycins E and G were the most active derivatives, hydroxylation of the C1 appears to coincide with increased antitumor activity of aranciamycins.
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