Detection of phosphorylated Akt and MAPK in cell culture assays
| Autor: | Maj Ulrichsen, Simon Molgaard, Simon Glerup, Ditte Olsen |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
inorganic chemicals
0301 basic medicine MAPK/ERK pathway Clinical Biochemistry Immunocytochemistry Signalling Immunocytochemistry followed by confocal microscopy and antibody validation Fluorescence 03 medical and health sciences Neurotrophic factors Biochemistry Genetics and Molecular Biology Insulin Medicine Protein kinase B Kinase Cell growth business.industry HEK 293 cells Molecular biology Hippocampal neuron culture Confocal microscopy Blot enzymes and coenzymes (carbohydrates) Medical Laboratory Technology BDNF 030104 developmental biology nervous system Immunology bacteria Phosphorylation business |
| Zdroj: | Molgaard, S, Ulrichsen, M, Olsen, D & Glerup, S 2016, ' Detection of phosphorylated Akt and MAPK in cell culture assays ', MethodsX, vol. 3, pp. 386-98 . https://doi.org/10.1016/j.mex.2016.04.009 MethodsX |
| DOI: | 10.1016/j.mex.2016.04.009 |
| Popis: | Graphical abstract Activation of intracellular kinases upon BDNF-stimulation of cultured hippocampal neurons A. Non-stimulated negative control. B. BDNF-stimulation of hippocampal neurons induces phosphorylation of Akt, and specific antibodies against such allows for visualization of phosphorylated Akt (pAkt) on a subcellular level. Here only shown for pAkt, however, the paper also discuss visualization of phosphorylated MAPK. This article describes an immunocytochemistry (ICC) method for staining against phosphorylated forms of the kinases Akt (pAkt) and MAPK (pMAPK). Phosphorylation is induced upon their activation by a number stimuli including insulin and brain-derived neurotrophic factor (BDNF), and is prerequisite for a number of cellular processes including cell proliferation and survival [1], [2], [3], [4], [5], [6]. ICC using antibodies raised against specific phosphorylation sites allows cell-type specific and subcellular monitoring of kinase activation. Here, we test how four different antibodies against pAkt and pMAPK, respectively perform in different cell types following insulin or BDNF stimulation using different protocol conditions. We find that phospho-specific-antibodies generally perform better when using Triton X-100 as a permeabilization agent compared to Saponin. In addition, two antibodies against pAkt and two against pMAPK gave a clear increase in signal in cells stimulated with insulin or BDNF compared to the signal obtained in unstimulated cells. These antibodies also performed well when tested with western blotting. Our results illustrate that both the choice of antibody as well as protocol details are critical parameters for successful detection of phosphorylated forms of kinases by ICC. This article includes: • A protocol for subcellular detection of phosphorylated Akt and MAPK. • Validation of 8 antibodies by immunocytochemistry. • Confirmation by western blotting |
| Databáze: | OpenAIRE |
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