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PDP - Template Name: IHC Control Slides
PDP - Template ID: *******ff9c92b
  1. Products /
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  3. SignalSlide® Phospho-p44/42 MAPK (Thr202/Tyr204) IHC Controls

SignalSlide® Phospho-p44/42 MAPK (Thr202/Tyr204) IHC Controls #8103

    Product Information

    Product Description

    Each control slide contains formalin fixed, paraffin-embedded NIH/3T3 cells, treated with either U0126 (1,4-diamino-2,3-dicyano-1,4-bis[2-aminophenylthio]butadiene) #9903 or TPA (12-O-Tetradecanoylphorbol-13-Acetate) #4174 , that serve as a control for phospho-p44/42 MAPK (Thr202/Tyr204) immunostaining. U0126 has been shown to be a highly selective inhibitor of MEK1 and MEK2. TPA induces phosphorylation of p44/42 MAPK. Western blot analysis was performed on extracts derived from the same cells to verify the efficacy of the U0126 and TPA treatments.

    To be used with antibodies: 4370, 4376, 4695, 4696, 9102, 9108.

    Background

    Mitogen-activated protein kinases (MAPKs) are a widely conserved family of serine/threonine protein kinases involved in many cellular programs, such as cell proliferation, differentiation, motility, and death. The p44/42 MAPK (Erk1/2) signaling pathway can be activated in response to a diverse range of extracellular stimuli, including mitogens, growth factors, and cytokines (1-3), and research investigators consider it an important target in the diagnosis and treatment of cancer (4). Upon stimulation, a sequential three-part protein kinase cascade is initiated, consisting of a MAP kinase kinase kinase (MAPKKK or MAP3K), a MAP kinase kinase (MAPKK or MAP2K), and a MAP kinase (MAPK). Multiple p44/42 MAP3Ks have been identified, including members of the Raf family, as well as Mos and Tpl2/COT. MEK1 and MEK2 are the primary MAPKKs in this pathway (5,6). MEK1 and MEK2 activate p44 and p42 through phosphorylation of activation loop residues Thr202/Tyr204 and Thr185/Tyr187, respectively. Several downstream targets of p44/42 have been identified, including p90RSK (7) and the transcription factor Elk-1 (8,9). p44/42 are negatively regulated by a family of dual-specificity (Thr/Tyr) MAPK phosphatases, known as DUSPs or MKPs (10), along with MEK inhibitors, such as U0126 and PD98059.

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    For Research Use Only. Not For Use In Diagnostic Procedures.
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