Bleomycin hydrochloride

Bleomycin Hydrochloride,Nippon Kayaku, Co.,Japan

Bleomycin hydrochloride is a DNA synthesis inhibitor. Bleomycin hydrochloride is a DNA damaging agent. Bleomycin hydrochloride is an antitumor antibiotic[1].

To a medium having a composition of 6.4 % of millet jelly, 0.5 % of glucose, 3.5 % of soybean powder, 0.75 % of corn steep liquor, 0.3 % of sodium chloride, 0.1 % of potassium secondary phosphate, 0.05 % of zinc sulfate, 0.01 % of copper sulfate, 0.2 % of sodium nitrate and 0.01 % of Toho No. 1 (trade name for a surface active agent composed of polyoxyethylene manufactured by Toho Chemical Industry Co. Ltd., Japan) was added 3-aminopropyl- dimethylsulfonium bromide hydrobromate in a proportion of 0.4 mg/ml to adjust the pH of the medium to 6.5.
Each 100 ml of the thus treated medium was separately charged into a Sakaguchi flask and was then sterilized. Subsequently, Streptomyces verticillus (ATCC No. 15003) was inoculated in the medium and was cultured at 27°C for 8 days with stirring at 130 r.p.m. Thereafter, the culture liquors (4.5 L) were collected and filtered to obtain 3.0 L of a filtrate (potency 38.8 mg/ml, total potency 416.4 mg). This culture filtrate was passed through and adsorbed on a column packed with 200 ml of Amberlite IRC-50 and was washed with water and was eluted with 0.5 N hydrochloric acid. 1.0 L of the eluate was neutralized, was passed through and adsorbed on a column packed with 100 ml of active carbon, was washed and was then eluted by use of a 1:1 (by volume) mixture of acetone - 0.02 N aqueous hydrochloric acid solution, and fractions active to Mycobacterium 607 were collected and concentrated to dryness. The resulting residue was dissolved in 5 ml of an 80 % aqueous methanol solution and was charged into a column packed with 30 ml of neutral alumina, followed by elution with an 80 % aqueous methanol solution. Subsequently, bleomycin-containing fractions were collected and concentrated to dryness to obtain 195 mg of bleomycin hydrochloride (potency 650.7 mcg/mg, total potency 172 mg). The yield from the culture filtrate was 30.5 %.

Antibiotic

[1] Hovhannisyan G, et al. Comparative analysis of individual chromosome involvement in micronuclei induced by bleomycin in human leukocytes. Mol Cytogenet. 2016 Jun 21;9:49. DOI:10.1186/s13039-016-0258-4
[2] Jaaskela-Saari HA, et al. Squamous cell cancer cell lines: sensitivity to bleomycin and suitability for animal xenograft studies. Acta Otolaryngol Suppl. 1997;529:241-4. DOI:10.3109/00016489709124133
[3] Corboz MR, et al. Therapeutic administration of inhaled INS1009, a LRX-15 prodrug formulation, inhibits bleomycin-induced pulmonary fibrosis in rats. Pulm Pharmacol Ther. 2018 Apr;49:95-103. DOI:10.1016/j.pupt.2018.01.012
[4] Kang Miao, et al. Scutellarein inhibits BLM-mediated pulmonary fibrosis by affecting fibroblast differentiation, proliferation, and apoptosis. Ther Adv Chronic Dis. 2020 Jul 30;11:2040622320940185. DOI:10.1177/2040622320940185
[5] Ling Peng, et al. Scutellarin ameliorates pulmonary fibrosis through inhibiting NF-κB/NLRP3-mediated epithelial-mesenchymal transition and inflammation. Cell Death Dis. 2020 Nov 13;11(11):978. DOI:10.1038/s41419-020-03178-2