Topoisomerase II: A specific marker for cell proliferation.
نویسندگان
چکیده
منابع مشابه
Topoisomerase II: A specific marker for cell proliferation
We have used an antibody probe to measure the levels of topoisomerase II in several transformed and developmentally regulated normal cell types. Transformed cells contain roughly 1 X 10(6) copies of the enzyme. During erythropoiesis in chicken embryos the enzyme level drops from 7.8 X 10(4) copies per erythroblast to less than 300 copies per erythrocyte concomitant with the cessation of mitosis...
متن کاملOverproduction of topoisomerase II in an ataxia telangiectasia fibroblast cell line: comparison with a topoisomerase II-overproducing hamster cell mutant.
Ataxia telangiectasia (AT) cell lines are characterised by their hypersensitivity to ionizing radiation and bleomycin, and their failure to inhibit DNA synthesis after DNA damage. A recent report [Singh et al. (1988) Nucl. Acids Res. 16, 3919-3929] indicated that a reduction in topoisomerase II (topo II) activity was a feature of AT lymphoblast cell lines. We have studied the possible role of D...
متن کاملNapsin-A Expression, a Reliable Immunohistochemical Marker for Diagnosis of Ovarian and Endometrial Clear Cell Carcinomas
Background & Objective: Clear cell carcinomas (CCC) differ from other types of ovarian and endometrial carcinomas in biolo...
متن کاملEndoglin – a marker of vascular endothelial cell proliferation in cancer
Endoglin (CD105) is an accessory receptor of transforming growth factor B. The highest synthesis, as well as expression, of endoglin has been found in vascular endothelial cells. The involvement of endoglin in angiogenesis and in angiogenesis-dependent processes has been observed. Endoglin promotes angiogenesis not only by activation of vascular endothelial cell proliferation but also by induct...
متن کاملInhibitory effects of a major soy isoflavone, genistein, on human DNA topoisomerase II activity and cancer cell proliferation.
The inhibitory activity of 3 soy isoflavones (daidzein, genistein and glycitein) and their glycosides (daidzin, genistin and glycitin) on mammalian DNA polymerases (pols) and topoisomerases (topos) was investigated. Of the compounds tested, only genistein selectively inhibited human topo II activity and had an IC50 value of 37.5 µM. These isoflavones had no effect on the activity of human topo ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: The Journal of Cell Biology
سال: 1986
ISSN: 0021-9525,1540-8140
DOI: 10.1083/jcb.103.6.2569