Molecular Manipulation and Analysis of Inositol Phosphate and Pyrophosphate Levels in Mammalian Cells

  • James C. Otto
  • John D. York
Part of the Methods in Molecular Biology book series (MIMB, volume 645)


Lipid-derived inositol phosphates (InsPs) comprise a family of second messengers that arise through the action of six classes of InsP kinases, generally referred to as IPKs. Genetic studies have indicated that InsPs play critical roles in embryonic development, but the mechanisms of action for InsPs in mammalian cellular function are largely unknown. This chapter outlines a method for manipulating cellular InsP profiles through the coexpression of a constitutively active G protein and various IPKs. It provides a mechanism by which the metabolism of a variety of InsPs can be upregulated, enabling the evaluation of the effects of these InsPs on cellular functions.

Key words:

Inositol phosphate G protein Phospholipase C HPLC Second messenger Signal transduction 



This work was supported by funds from the Howard Hughes Medical Institute and from the National Institute of Health Grants HL-55672 and DK-070272. We thank members of the York laboratory for their contributions to the study of IPKs.


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Copyright information

© Springer Science+Business Media, LLC 2010

Authors and Affiliations

  • James C. Otto
    • 1
  • John D. York
    • 1
  1. 1.Department of Pharmacology and Cancer Biology, Howard Hughes Medical InstituteDuke University Medical CenterDurhamUSA

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