Zobrazeno 1 - 10
of 32
pro vyhledávání: '"Mitsunobu Hara"'
Publikováno v:
Biochemical and Biophysical Research Communications. 377:1085-1090
Bcl-2 is an intracellular membrane protein that prevents cells from undergoing apoptosis in response to various cell-death signals. It negatively regulates mitochondrial outer membrane permeabilization, which is responsible for the release of apoptog
Autor:
Yutaka Kanda, Takayuki Nakashima, Masami Kaneko, Mitsunobu Hara, Yuko Uosaki, Shun-Ichi Ikeda
Publikováno v:
Bioorganic & Medicinal Chemistry Letters. 11:887-890
Tetrocarcin A was recently identified as an inhibitor of the anti-apoptotic function of Bcl-2. We synthesized novel tetrocarcin derivatives in order to increase their selective inhibitory activity against Bcl-2. It was found that 21-acetoxy-9-glycosy
Publikováno v:
The Journal of Antibiotics. 48:768-772
In the course of screening for microbial products with antitumor activity, new antitumor agents, clecarmycins, were isolated from culture broth of Streptomyces sp. DO-114. The antibiotics were produced in a fermentation medium supplemented with a hig
Autor:
Kristian Pfaller, David Bernhard, Monika Senfter, Gabriele Anether, Richard Greil, Inge Tinhofer, Mitsunobu Hara
Publikováno v:
The FASEB Journal. 16:1295-1297
SPECIFIC AIMSCytotoxic agents frequently fail to induce apoptosis in neoplasias because tumor cells express increased levels of anti-apoptotic proteins, have down-regulated important executor molec...
Autor:
Masami Okabe, Mitsunobu Hara, Shiro Akinaga, Douglas Wood, Misook Uh, Ruben Gomez, Fuyuhiko Tamanoi, Kazuhito Akasaka, Hirofumi Nakano
Publikováno v:
Proceedings of the National Academy of Sciences. 90:2281-2285
A microbial screen using a yeast strain with conditional deficiency in the GPA1 gene was carried out to search for inhibitors of protein farnesyltransferase (PFT). A strain of Streptomyces was found to produce active compounds named UCF1-A, UCF1-B, a
Autor:
Mitsunobu Hara, Yutaka Kanda, Shun-Ichi Ikeda, Yuko Uosaki, Takayuki Nakashima, Masami Kaneko
Publikováno v:
ChemInform. 32
Publikováno v:
The Journal of Antibiotics. 44:33-39
In screening actinomycetes for antitumor compounds, Streptomyces sp. DO-116 was found to produce a new antitumor antibiotic sapurimycin. It is structurally related to, but distinct from, kapurimycins. The antibiotic was produced in a fermentation med
Covalent modification and single-strand scission of DNA by a new antitumor antibiotic kapurimycin A3
Publikováno v:
Biochemistry. 29:10449-10455
Kapurimycin A3 is a new antitumor antibiotic isolated from a Streptomyces. It contains the anthrapyrone skeleton and a beta,gamma-unsaturated delta-keto carboxylic acid moiety in the structure. In vitro, kapurimycin causes single-strand cleavage of s
Publikováno v:
The Journal of Antibiotics. 43:1519-1523
The kapurimycins A1, A2 and A3 were revealed to be new antitumor antibiotics with molecular formula of C27H26O9, C26H24O9 and C27H24O9, respectively. The structures of the kapurimycins were determined by NMR spectroscopic analysis. The kapurimycins a