Identification of a Crucial Site for Synoviolin Expression

Identification of a Crucial Site for Synoviolin Expression
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滑膜蛋白表达关键位点的鉴定

DOI:
10.1128/mcb.25.16.7344-7356.2005
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发表时间:
2005
影响因子:
5.3
通讯作者:
T. Nakajima
T. Nakajima
中科院分区:
生物学2区
文献类型:
--
作者:
K. Tsuchimochi;N. Yagishita;S. Yamasaki;T. Amano;Y. Kato;K. Kawahara;S. Aratani;Hidetoshi Fujita;Fengyun Ji;A. Sugiura;Toshihiko Izumi;Asako Sugamiya;I. Maruyama;A. Fukamizu;S. Komiya;K. Nishioka;T. Nakajima

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滑膜酶是一种定位于内质网的E3泛素连接酶,并作为内质网相关降解系统发挥作用。转基因小鼠的分析表明,滑膜鞘基因的剂量与关节病变的发病有关。滑膜完全缺乏是致命的胚胎。因此,滑膜张力的改变可能导致内质网稳态的破坏,从而导致细胞稳态的紊乱。因此,在生理和病理条件下,滑膜小提琴的表达水平似乎对其在细胞稳态中的生物学作用很重要。为了检查蛋白质水平的控制,我们进行了启动子分析来确定转录调控。在这里,我们描述了滑膜小提琴转录在细胞稳态中的作用。Ets结合位点(EBS),称为EBS-1,位于近端启动子的- 76至- 69位,负责体内和体外滑膜的表达。有趣的是,将eb -1诱饵转移到NIH 3T3细胞中,不仅可以抑制滑膜缩基因的表达,还可以减少细胞数量。膜联蛋白V染色的荧光活化细胞分选分析证实了eb -1诱骗物诱导细胞凋亡,并证实了过度表达滑膜小提琴可恢复细胞凋亡。我们的研究结果表明,通过eb -1对滑膜调节的转录调控在细胞内稳态中起重要作用。我们的研究为细胞稳态的转录调控提供了新的见解。
ABSTRACT Synoviolin is an E3 ubiquitin ligase localized in the endoplasmic reticulum (ER) and serving as ER-associated degradation system. Analysis of transgenic mice suggested that synoviolin gene dosage is implicated in the pathogenesis of arthropathy. Complete deficiency of synoviolin is fatal embryonically. Thus, alternation of Synoviolin could cause breakdown of ER homeostasis and consequently lead to disturbance of cellular homeostasis. Hence, the expression level of Synoviolin appears to be important for its biological role in cellular homeostasis under physiological and pathological conditions. To examine the control of protein level, we performed promoter analysis to determine transcriptional regulation. Here we characterize the role of synoviolin transcription in cellular homeostasis. The Ets binding site (EBS), termed EBS-1, from position −76 to −69 of the proximal promoter, is responsible for synoviolin expression in vivo and in vitro. Interestingly, transfer of EBS-1 decoy into NIH 3T3 cells conferred not only the repression of synoviolin gene expression but also a decrease in cell number. Fluorescence-activated cell sorter analysis using annexin V staining confirmed the induction of apoptosis by EBS-1 decoy and demonstrated recovery of apoptosis by overexpression of Synoviolin. Our results suggest that transcriptional regulation of synoviolin via EBS-1 plays an important role in cellular homeostasis. Our study provides novel insight into the transcriptional regulation for cellular homeostasis.
GA 结合蛋白转录因子与细胞色素 c 氧化酶亚基 IV 基因的重复转录起始区重复序列的协同结合。
DOI: --
发表时间: 1994
期刊: The Journal of biological chemistry
影响因子: --
作者:
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通讯作者: Avadhani,NG
内质网相关降解的 HRD 基因依赖性。
DOI: 10.1091/mbc.11.5.1697
发表时间: 2000
影响因子: 3.3
作者:
Wilhovsky,S;Gardner,R;Hampton,R
通讯作者: Hampton,R
DOI: 10.1091/mbc.10.6.2075
发表时间: 1999-06-01
影响因子: 3.3
作者:
Khurana, TS;Rosmarin, AG;Gammeltoft, S
通讯作者: Gammeltoft, S
DOI: 10.1172/jci16886
发表时间: 2002-11
期刊: The Journal of clinical investigation
影响因子: --
作者:
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DOI: --
发表时间: 2000-04
期刊: The Journal of rheumatology
影响因子: --
作者:
J. Goater;R. Müller;G. Kollias;G. Firestein;I. Sanz;R. O’Keefe;E. Schwarz
通讯作者: J. Goater;R. Müller;G. Kollias;G. Firestein;I. Sanz;R. O’Keefe;E. Schwarz