Rapid activation of JNK1 in UV-B irradiated epidermal keratinocytes.

Rapid activation of JNK1 in UV-B irradiated epidermal keratinocytes.
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UV-B 照射的表皮角质形成细胞中 JNK1 的快速激活。

DOI:
10.1038/sj.onc.1201628
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发表时间:
1998
期刊:
Oncogene.
影响因子:
--
通讯作者:
Pelling,JC
Pelling,JC
中科院分区:
--
文献类型:
--
作者:
Ramaswamy,NT;Ronai,Z;Pelling,JC

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Jun N-末端激酶(JNK 1)是应激活化蛋白激酶家族的成员,其被包括UV辐射的许多形式的应激活化,导致c-Jun、ATF-2、Elk-1和p53的磷酸化。由于UV-B辐射是紫外线(UV)诱导的皮肤癌的主要原因,我们选择阐明JNK 1在角质形成细胞中的激活,这代表了UV相关的细胞系统。我们已经证明了JNK 1在角质形成细胞系C50中响应于多剂量的UV-B照射而快速活化。JNK 1激活发生在1分钟内,达到峰值的10分钟,并在2小时内恢复到接近基础水平的UV-B治疗后。我们的数据提供了第一个证据表明,角质形成细胞通过JNK 1途径的快速激活对生理相关的UV-B辐射的多个剂量作出反应。
Jun N-terminal kinase (JNK1) is a member of a family of stress-activated protein kinases which are activated by many forms of stress including UV radiation, resulting in the phosphorylation of c-Jun, ATF-2, Elk-1 and p53. As UV-B radiation is mainly responsible for ultraviolet (UV)-induced skin cancers, we chose to elucidate JNK1 activation in keratinocytes which represent a UV-relevant cell system. We have demonstrated rapid activation of JNK1 in a keratinocyte cell line, C50, in response to multiple doses of UV-B irradiation. JNK1 activation occurred within 1 min, peaked by 10 min and returned to near basal levels within 2 h following the UV-B treatments. Our data provide the first evidence to show that keratinocytes do respond to multiple doses of the physiologically relevant UV-B radiation through rapid activation of the JNK1 pathway.
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