Screening for small molecule disruptors of AKAP-PKA interactions

Schächterle, C., Christian, F. , Fernandes, J. M. P. and Klussmann, E. (2015) Screening for small molecule disruptors of AKAP-PKA interactions. Methods in Molecular Biology, 1294, pp. 151-66. (doi: 10.1007/978-1-4939-2537-7_12) (PMID:25783884)

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Abstract

Protein-protein interactions (PPIs) are highly specific and diverse. Their selective inhibition with peptides, peptidomimetics, or small molecules allows determination of functions of individual PPIs. Moreover, inhibition of disease-associated PPIs may lead to new concepts for the treatment of diseases with an unmet medical need. Protein kinase A (PKA) is an ubiquitously expressed protein kinase that controls a plethora of cellular functions. A-kinase anchoring proteins (AKAPs) are multivalent scaffolding proteins that directly interact with PKA. AKAPs spatially and temporally restrict PKA activity to defined cellular compartments and thereby contribute to the specificity of PKA signaling. However, it is largely unknown which of the plethora of PKA-dependent signaling events involve interactions of PKA with AKAPs. Moreover, AKAP-PKA interactions appear to play a role in a variety of cardiovascular, neuronal, and inflammatory diseases, but it is unclear whether these interactions are suitable drug targets. Here we describe an enzyme-linked immunosorbent assay (ELISA) for the screening of small molecule libraries for inhibitors of AKAP-PKA interactions. In addition, we describe a homogenous time-resolved fluorescence (HTRF) assay for use in secondary validation screens. Small molecule inhibitors are invaluable molecular tools for elucidating the functions of AKAP-PKA interactions and may eventually lead to new concepts for the treatment of diseases where AKAP-PKA interactions represent potential drug targets.

Item Type:Articles
Additional Information:ISBN: 9781493925360
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Christian, Dr Frank
Authors: Schächterle, C., Christian, F., Fernandes, J. M. P., and Klussmann, E.
College/School:College of Medical Veterinary and Life Sciences > School of Infection & Immunity
Journal Name:Methods in Molecular Biology
Publisher:Springer
ISSN:1064-3745
ISSN (Online):1940-6029
Published Online:02 March 2015

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