SignalSilence? SAPK/JNK siRNA I

• 产品编号：CST-6232S      品牌：CST       原厂货号：6232S
• 产品分类：DNA和RNA纯化 > RNA干扰 > RNAi Oligos > siRNA
• 应用分类：

描述：

SignalSilence® SAPK/JNK siRNA I能抑制JNK1、JNK2蛋白的表达，而不影响JNK3蛋白的表达。SAPK/JNK siRNA I能抑制人、大鼠、小鼠、猴的SAPK/JNK蛋白的表达。来自Cell Signaling Technology (CST)的SignalSilence^® SAPK/JNK siRNA I可以帮助研究者通过RNA干扰特异性地抑制SAPK/JNK的表达，这种方法可以通过将双链RNA分子传递到细胞内从而使基因表达有选择的沉默。来自CST的所有的SignalSilence^® siRNA产品都是经过内部严格检测的，并且通过Western blot 分析证明确实能够减少目的蛋白的表达。通过三苯甲基分析每个碱基以监测寡核苷酸的合成，确保合适的配对效率。随后寡核苷酸通过亲和固相萃取法纯化。退火的RNA双链通过质谱分析来证实其精确的组成。每一批产品都通过质谱分析与前面的产品进行比较，来保证不同批次之间的最大一致性。CST推荐使用100 nM SignalSilence^®SAPK/JNK siRNA I 进行转染，48到72小时后对细胞进行裂解。转染步骤按照转染试剂说明书提供的步骤进行。遇到任何使用方面的问题，请随时联系CST。应激活化蛋白激酶/Jun氨基末端激酶SAPK/JNK能够有效、优先地被多种环境压力激活，这些环境压力包括紫外照射和gamma 辐射、神经酰胺、炎性因子，在某些情况下也包括生长因子和GPCR激动剂 (1-6)。正如其他的 MAPKs，核心信号传导单元包括一个MAPKKK，通常是MEKK1-MEKK4，或一种混合谱系酶 (MLKs），这些MAPKKK激酶能磷酸化并激活 MKK4/7。活化后，MKKs磷酸化并激活SAPK/JNK 激酶 (2)。应激反应信号经Rho 家族(Rac, Rho, cdc42)的小GTP酶被传递到这个级联信号反应中 (3)。Rac1 和 cdc42蛋白都能调节MEKKs、 MLKs的激活(3)。另外一种情况是，MKK4/7能够通过生发中心激酶 (GCK)家族成员的刺激，在一个非GTP酶依赖机制中被激活 (4)。有三种不同的SAPK/JNK基因，而每一种都会经过选择性剪切产生多种异构体(3)。活化的二聚体SAPK/JNK，能转位到细胞核中，通过它对 c-Jun, ATF-2和其他转录因子的效应而调节转录过程(3,5)。

1. Davis, R.J. (1999) Biochem Soc Symp 64, 1-12.
2. Ichijo, H. (1999) Oncogene 18, 6087-93.
3. Kyriakis, J.M. and Avruch, J. (2001) Physiol Rev 81, 807-69.
4. Kyriakis, J.M. (1999) J Biol Chem 274, 5259-62.
5. Leppä, S. and Bohmann, D. (1999) Oncogene 18, 6158-62.
6. Whitmarsh, A.J. and Davis, R.J. (1998) Trends Biochem Sci 23, 481-5.

原厂资料：

Homology

Species predicted to react based on 100% sequence homology: Mouse, Rat, Monkey

Specificity / Sensitivity

SignalSilence® SAPK/JNK siRNA I will inhibit JNK1 and JNK2 expression. It wil not affect JNK3. SAPK/JNK siRNA I will inhibit human, mouse, rat and monkey SAPK/JNK expression.

Description

SignalSilence® SAPK/JNK siRNA I from Cell Signaling Technology (CST) allows the researcher to specifically inhibit SAPK/JNK expression by RNA interference, a method whereby gene expression can be selectively silenced through the delivery of double stranded RNA molecules into the cell. All SignalSilence® siRNA products from CST are rigorously tested in-house and have been shown to reduce target protein expression by western analysis.

Quality Control

Oligonucleotide synthesis is monitored base by base through trityl analysis to ensure appropriate coupling efficiency. The oligo is subsequently purified by affinity-solid phase extraction. The annealed RNA duplex is further analyzed by mass spectrometry to verify the exact composition of the duplex. Each lot is compared to the previous lot by mass spectrometry to ensure maximum lot-to-lot consistency.

Directions for Use

CST recommends transfection with 100 nM SAPK/JNK siRNA I 48 to 72 prior to cell lysis. For transfection procedure, follow protocol provided by the transfection reagent manufacturer. Please feel free to contact CST with any questions on use.

Background

The stress-activated protein kinase/Jun-amino-terminal kinase SAPK/JNK is potently and preferentially activated by a variety of environmental stresses including UV and gamma radiation, ceramides, inflammatory cytokines, and in some instances, by growth factors and GPCR agonists (1-6). As with the other MAPKs, the core signaling unit is composed of a MAPKKK, typically MEKK1-MEKK4, or by one of the mixed lineage kinases (MLKs), which phosphorylate and activate MKK4/7. Upon activation, MKKs phosphorylate and activate the SAPK/JNK kinase (2). Stress signals are delivered to this cascade by small GTPases of the Rho family (Rac, Rho, cdc42) (3). Both Rac1 and cdc42 mediate the stimulation of MEKKs and MLKs (3). Alternatively, MKK4/7 can be activated in a GTPase-independent mechanism via stimulation of a germinal center kinase (GCK) family member (4). There are three SAPK/JNK genes each of which undergoes alternative splicing resulting in numerous isoforms (3). SAPK/JNK, when active as a dimer, can translocate to the nucleus and regulate transcription through its effects on c-Jun, ATF-2, and other transcription factors (3,5).

1. Davis, R.J. (1999) Biochem Soc Symp 64, 1-12.
2. Ichijo, H. (1999) Oncogene 18, 6087-93.
3. Kyriakis, J.M. and Avruch, J. (2001) Physiol Rev 81, 807-69.
4. Kyriakis, J.M. (1999) J Biol Chem 274, 5259-62.
5. Leppä, S. and Bohmann, D. (1999) Oncogene 18, 6158-62.
6. Whitmarsh, A.J. and Davis, R.J. (1998) Trends Biochem Sci 23, 481-5.

注意事项：

Storage: SAPK/JNK siRNA I is supplied in RNAse-free water.
Aliquot and store at -20 ºC.