Tallysomycin, a new antitumor antibiotic complex related to bleomycin. IV. New biosynthetic derivatives of tallysomycin.
نویسندگان
چکیده
A series of new biosynthetic derivatives of tallysomycins A and B were obtained by precursor amine-feeding fermentation. Certain diamines were incorporated into tallysomycins as the terminal amine moiety affording two classes of biosynthetic derivatives, with or without the Beta-lysine moiety in the subterminal position. Among 21 derivatives prepared, tallysomycin S10b was selected for further studies in view of its favorable therapeutic indices.
منابع مشابه
The production of hydroxyl radical by tallysomycin and copper(II).
Tallysomycin is an antitumor antibiotic that is structurally related to bleomycin. The mechanism of action of tallysomycin appears to be similar to that of bleomycin. Bleomycin induces strand scission of purified isolated DNA [ l--5]. Bleomycin has also been shown to produce breakage of intracellular DNA [5,6]. Iron(H) appears to be associated with the mechanism of action of bleomycin. The foll...
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The biosynthetic gene clusters for the glycopeptide antitumor antibiotics bleomycin (BLM), tallysomycin (TLM), and zorbamycin (ZBM) have been recently cloned and characterized from Streptomyces verticillus ATCC15003, Streptoalloteichus hindustanus E465-94 ATCC31158, and Streptomyces flavoviridis ATCC21892, respectively. The striking similarities and differences among the biosynthetic gene clust...
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The objective of this study was to compare the relative in vitro cytotoxicity of bleomycin to that of two newer-generation analogues, tallysomycin S10b and liblomycin. The latter compound is of particular interest as it has recently been shown in preclinical studies to be free of a potential to cause pulmonary injury and yet to possess only a minor potential to produce myelotoxicity. Using the ...
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During the screening of material which has the antimicrobial activity against aminoglycoside-resistant bacteria, A new material -(L-β-lysine) polypeptide from a culture medium of Streptomyces sp.(DWGS2) was isolated, and the structure and the physicochemical properties of the new material were elucidated. The new material was separated by column chromatography of the culture medium using Dowex...
متن کاملBlmB and TlmB Provide Resistance to the Bleomycin Family of Antitumor Antibiotics by N-Acetylating Metal-Free Bleomycin, Tallysomycin, Phleomycin, and Zorbamycin
The bleomycin (BLM) family of glycopeptide-derived antitumor antibiotics consists of BLMs, tallysomycins (TLMs), phleomycins (PLMs), and zorbamycin (ZBM). The self-resistant elements BlmB and TlmB, discovered from the BLM- and TLM-producing organisms Streptomyces verticillus ATCC15003 and Streptoalloteichus hindustanus E465-94 ATCC31158, respectively, are N-acetyltransferases that provide resis...
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عنوان ژورنال:
- The Journal of antibiotics
دوره 34 6 شماره
صفحات -
تاریخ انتشار 1981