2-Aminopurine selectively inhibits splicing of tumor necrosis factor alpha mRNA
2-Aminopurine selectively inhibits splicing of tumor necrosis factor alpha mRNA
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2-氨基嘌呤选择性抑制肿瘤坏死因子 α mRNA 的剪接
DOI:
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发表时间:
1996
影响因子:
5.3
通讯作者:
R. Kaempfer
中科院分区:
文献类型:
--
作者:
N. Jarrous;F. Osman;R. Kaempfer
2-Aminopurine (2-AP) inhibits specific kinases that phosphorylate the alpha subunit of eukaryotic translation initiation factor 2. One of these, PKR, is also involved in signal transduction. We show here that 2-AP selectively inhibits expression of tumor necrosis factor alpha (TNF-alpha) mRNA in primary human lymphoid cells. 2-AP does not inhibit transcription of the human TNF-alpha gene, nor does it affect mRNA stability. Instead, the flow of short-lived precursor transcripts into mature TNF-alpha mRNA is blocked. When 2-AP is present during induction, unspliced TNF-alpha precursor transcripts accumulate at the expense of mRNA. Using RNase protection analysis with genomic probes for different exon-intron junctions, we show that 2-AP blocks splicing of TNF-alpha mRNA. Neither the TNF-beta nor the interleukin-1 beta gene shows such regulation. 2-AP also inhibits splicing of precursor RNA transcribed from an exogenous human TNF-alpha gene. Sequences within this gene thus confer sensitivity to 2-AP. Yet, control is not exerted at a specific splice site. Our results reveal the involvement of a 2-AP-sensitive component, expressed in functional form before induction, in the splicing of TNF-alpha mRNA.
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影响因子:
3.9
作者:
Pal, Nabanita;Kim, Taeyeon;Park, Jae-Seo;Cho, Eun-Bum
通讯作者:
Cho, Eun-Bum
DOI:
10.1073/pnas.91.10.4278
发表时间:
1994-05-10
影响因子:
11.1
作者:
BARBER, GN;THOMPSON, S;KATZE, MG
通讯作者:
KATZE, MG
DOI:
10.1073/pnas.90.1.232
发表时间:
1993-01-01
影响因子:
11.1
作者:
MEURS, EF;GALABRU, J;HOVANESSIAN, AG
通讯作者:
HOVANESSIAN, AG
DOI:
--
发表时间:
1983
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
DeBenedetti,A;Baglioni,C
通讯作者:
Baglioni,C
DOI:
--
发表时间:
1992
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Ferreri,NR;Sarr,T;Askenase,PW;Ruddle,NH
通讯作者:
Ruddle,NH