A purified isolate of an actinomycete identified as ATCC 39366 is capable of producing the antimicrobial compound CL-1957A which also exhibits antitumor properties.
The antimicrobial compound CL-1957A is produced by cultivating isolate ATCC 39366 under aerobic conditions in a culture medium containing assimilable sources of carbon and nitrogen until a substantial quantity of the CL-1957A compound is produced, and subsequently isolating the CL-1957A compound.
The antibiotic compound CL-1957A and pharmaceutical compositions comprising this substance together with a pharmaceutically acceptable carrier is also disclosed, as are methods of treating microbial infections and tumors in mammals, employing these pharmaceutical compositions.
Drug for Inhibiting Production of Matrix Metalloprotease-9
申请人:Kobayashi Takashi
公开号:US20080119558A1
公开(公告)日:2008-05-22
A drug for inhibiting the production of matrix metalloproteinase-9 which contains leptomycin B or its derivative as the active ingredient can specifically inhibit the production of MMP-9 compared with MMP-2, furthermore, has an effect of inhibiting the production of MMP-9 even under stimulating the differentiation by adding calcium at a high concentration or adding TGF-β, and under stimulating for inducing inflammation by adding TNF-α or adding IL-2α.