Pradimicin S, a new pradimicin analog. I. Taxonomy, fermentation and biological activities.
A directed search for antibiotics active in a syncytium formation inhibition assay using a co-culture of HeLa-T4 cells expressing CD4 antigen and BSC-1 cells expressing gp-120 led to the isolation of pradimicin S, a new member of the pradimicin family. The producing strain (AA0851) was characterized as a new species of Actinomadura for which the name Actinomadura spinosa sp. nov. is proposed. Production of pradimicin S by strain AA0851 was significantly improved by addition of ferrous sulfate (0.1-0.4%) to the production medium. Pradimicin S showed potent activity against human immunodeficiency virus (HIV) LAVBRU strain in a CPE assay, and moderate activity against influenza virus type A. The antibiotic was active against a wide variety of fungi and yeasts in vitro and demonstrated in vivo efficacy against a systemic Candida albicans infection in mice.
Saitoh
K
K
Bristol-Myers Squibb Research Institute, Tokyo, Japan.
Tenmyo
O
O
Yamamoto
S
S
Furumai
T
T
Oki
T
T
D000191:Actinomycetaceae / Q000737:chemistry; D000818:Animals; D018943:Anthracyclines; D000903:Antibiotics, Antineoplastic / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D000935:Antifungal Agents / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D000998:Antiviral Agents / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D004285:Dogs; D005285:Fermentation; D006367:HeLa Cells / Q000187:drug effects; D006801:Humans; D008297:Male; D051379:Mice; D008813:Mice, Inbred ICR; D008826:Microbial Sensitivity Tests; D000095643:Pradimicins and Benanomicins
D018943:Anthracyclines; D000903:Antibiotics, Antineoplastic; D000935:Antifungal Agents; D000998:Antiviral Agents; C080896:pradimicin S; D000095643:Pradimicins and Benanomicins