Human colon cancer cell lines show a diverse pattern of nitric oxide synthase gene expression and nitric oxide generation.

Human colon cancer cell lines show a diverse pattern of nitric oxide synthase gene expression and nitric oxide generation.
复制标题

DOI:
10.1038/bjc.1994.409
复制
发表时间:
1994-11
影响因子:
8.8
通讯作者:
Moncada, S.
Moncada, S.
中科院分区:
医学1区
文献类型:
--
作者:
Jenkins, D. C.;Charles, I. G.;Baylis, S. A.;Lelchuk, R.;Radomski, M. W.;Moncada, S.

文献摘要

参考文献

被引文献

相似文献

对一组人结肠腺癌细胞系进行了一氧化氮合酶(NOS)基因家族mRNAs的表达和基于瓜氨酸和亚硝酸盐(NO2-)形成的酶活性的证据的检测。逆转录-聚合酶链式反应(RT-PCR)结果显示,所有细胞系(SW480、SW620、DLD-1和WiDR)均表达钙依赖的内皮型(E)一氧化氮合酶,而SW480细胞也表达钙(2+)依赖的神经元型(N)NOS。细胞因子刺激和未刺激的SW480、SW620和DLD-1细胞均可表达钙非依赖性诱导型一氧化氮合酶(I-NOS)的mRNA,但在WiDR细胞中未见表达。然而,基于瓜氨酸和NO2-形成的酶活性与mRNA表达之间的相关性很小。因此,所有细胞系都没有表现出可测量的钙依赖的一氧化氮合酶活性,而除了WiDR细胞外,所有细胞株中都有钙(2+)非依赖性的一氧化氮合酶活性。此外,DLD-1细胞只有在脂多糖(LPS)和/或细胞因子刺激下才产生瓜氨酸并产生NO2-,而SW480和SW620则是结构性地产生瓜氨酸。因此,RT-PCR研究表明,具有相似上皮来源的肿瘤细胞表现出不同的一氧化氮合酶基因家族表达模式,而平行的生化研究清楚地表明,这种表达并不总是导致可测量的酶活性导致NO的产生。
A panel of human colonic adenocarcinoma cell lines was examined both for expression of mRNAs of the nitric oxide synthase (NOS) gene family and for evidence of enzymic activity based on citrulline and nitrite (NO2-) formation. Reverse transcription-polymerase chain reaction (RT-PCR), revealed that all lines (SW480, SW620, DLD-1 and WiDr) expressed mRNA for the Ca(2+)-dependent endothelial (e)NOS, while SW480 cells also expressed the Ca(2+)-dependent neuronal (n)NOS. The mRNA for the Ca(2+)-independent inducible (i)NOS was expressed both by cytokine-stimulated and by unstimulated SW480, SW620 and DLD-1 cells, but none was seen at any time in the WiDr cells. There was, however, little correlation between mRNA expression and enzymic activity based on citrulline and NO2- formation. Thus none of the cell lines exhibited measurable Ca(2+)-dependent NOS activity, while Ca(2+)-independent NOS activity was seen in all but the WiDr cells. Furthermore, DLD-1 cells generated citrulline with resultant NO2- formation only after stimulation with lipopolysaccharide (LPS) and/or cytokines, while SW480 and SW620 did so constitutively. Thus RT-PCR studies indicate that tumour cells of similar epithelial origin display a diverse pattern of NOS gene family expression, and parallel biochemical studies clearly indicate that such expression does not always result in measurable enzymic activity leading to the generation of NO.
细胞因子和内毒素刺激人肝细胞中的一氧化氮合酶途径。
DOI: 10.1084/jem.176.1.261
发表时间: 1992-07-01
期刊: The Journal of experimental medicine
影响因子: --
作者:
Nussler AK;Di Silvio M;Billiar TR;Hoffman RA;Geller DA;Selby R;Madariaga J;Simmons RL
通讯作者: Simmons RL
DOI: 10.1021/bi00094a017
发表时间: 1993-11-02
期刊: BIOCHEMISTRY
影响因子: 2.9
作者:
SHERMAN, PA;LAUBACH, VE;WOOD, ER
通讯作者: WOOD, ER
DOI: 10.1038/333664a0
发表时间: 1988-06-16
期刊: NATURE
影响因子: 64.8
作者:
PALMER, RMJ;ASHTON, DS;MONCADA, S
通讯作者: MONCADA, S
DOI: 10.1161/01.res.71.5.1088
发表时间: 1992-11-01
影响因子: 20.1
作者:
SCOTTBURDEN, T;SCHINI, VB;VANHOUTTE, PM
通讯作者: VANHOUTTE, PM
DOI: 10.1084/jem.169.5.1543
发表时间: 1989-05-01
期刊: The Journal of experimental medicine
影响因子: --
作者:
Stuehr DJ;Nathan CF
通讯作者: Nathan CF