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Our lab studies the phosphoinositides, a group of signaling molecules involved in growth factor signaling, membrane trafficking, and probably many more functions. We are taking several approaches to identify novel functions for this interesting group of signaling molecules. One approach uses fluorescence microscopy of living mammalian cells expressing green fluorescent protein reporters for each of the phosphoinositides. Another approach involves a screen of the entire Drosophila proteome to identify novel phosphoinositide-binding proteins. Both approaches have yielded new and unexpected functions for the phosphoinositides. For example, we have identified an interesting role for PI(4,5)P2 at the cleavage furrow during mitotic cytokinesis. We have many projects to study our new phosphoinositide binding proteins (including their role in cytokinesis) and to develop new approaches to study phosphoinositide function. Because of the broad role for phosphoinositides in the cell, we are always ready to delve into new areas of cell biology as our research leads us.

Track(s):
MCB
Molecular Pharmacology

BMS Focus Areas:
Endocrinology
Cancer Biology