Autocrine regulation of erythropoietin gene expression in human hepatocellular carcinoma cells.
Autocrine regulation of erythropoietin gene expression in human hepatocellular carcinoma cells.
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人肝细胞癌细胞中促红细胞生成素基因表达的自分泌调节。
DOI:
10.1016/0024-3205(95)02307-0
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发表时间:
1995
期刊:
影响因子:
6.1
通讯作者:
J. Fisher
中科院分区:
文献类型:
--
作者:
T. Ohigashi;K. Yoshioka;J. Fisher
We have previously reported that a marked increase in erythropoietin (Epo) production can be demonstrated in Hep3B cell cultures in response to hypoxia (1). In order to determine whether this increase involves an autocrine mechanism, we have investigated the effects of purified human recombinant Epo (rHuEpo) on Epo production. Purified rHuEpo (5–80 mU/ml) produced a significant increase above control levels of Epo in Hep3B cell cultures under normoxic (20% O2) conditions. Hypoxie (1% O2) incubation of Hep3B cells with rHuEpo caused an increase over control levels of EpomRNA. Hep3B cells also expressed Epo receptor (Epo-R) transcripts. Binding studies using [125I]-Epo revealed that Hep3B cells contain a single class of binding site (kd = 2.9 nmol/rmL and Bmax = 1760 sites/cell). Antierythropoietin receptor monoclonal antibody inhibited the rHuEpo induced elevation in medium levels of Epo and blocked [125I]-Epo binding to Hep3B cell membranes. These results demonstrate that the expression of EpomRNA may be controlled, at least in part, by an autocrine mechanism.
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影响因子:
20.3
作者:
MA Goldberg;CC Gaut;H. Bunn
通讯作者:
MA Goldberg;CC Gaut;H. Bunn
影响因子:
20.3
作者:
Hermine,O;Beru,N;Pech,N;Goldwasser,E
通讯作者:
Goldwasser,E
影响因子:
2.6
作者:
Spivak,JL;Fisher,J;Isaacs,MA;Hankins,WD
通讯作者:
Hankins,WD
DOI:
--
发表时间:
1991
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Carroll,MP;Spivak,JL;McMahon,M;Weich,N;Rapp,UR;May,WS
通讯作者:
May,WS
DOI:
--
发表时间:
1987
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Sawyer,ST;Krantz,SB;Goldwasser,E
通讯作者:
Goldwasser,E