1,721,045 research outputs found

    Leucocyte and endothelial cell biology

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    Prof Mathew A Vadas$AUD 3,566,050.12ProgramProgram Gran

    What determines the severity of inflammation

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    Prof Mathew A Vadas$AUD 253,551.22NHMRC Project GrantsStandard Project Gran

    Control of blood cell interaction with vessel walls

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    Prof Mathew A Vadas$AUD 89,405.75NHMRC Project GrantsStandard Project Gran

    Letter to the Editor: 1H and 15N chemical shift assignments for domain 4 of the common beta-chain of the IL-3, IL-5 and GM-CSF receptors

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    Terrence D. Mulhern, Christopher J. Bagley, Craig Gaunt, Angel.F. Lopez, Mathew A. Vadas, Richard J. D'Andrea, Grant W. Booke

    Translocation of protein tyrosine phosphatase Pez/PTPD2/PTP36 to the nucleus is associated with induction of cell proliferation

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    Pez is a non-transmembrane tyrosine phosphatase with homology to the FERM (4.1, ezrin, radixin, moesin) family of proteins. The subcellular localisation of Pez in endothelial cells was found to be regulated by cell density and serum concentration. In confluent monolayers Pez was cytoplasmic, but in cells cultured at low density Pez was nuclear, suggesting that it is a nuclear protein in proliferating cells. This notion is supported by the loss of nuclear Pez when cells are serum-starved to induce quiescence, and the rapid return of Pez to the nucleus upon refeeding with serum to induce proliferation. Vascular endothelial cells normally exist as a quiescent confluent monolayer but become proliferative during angiogenesis or upon vascular injury. Using a 'wound' assay to mimic these events in vitro, Pez was found to be nuclear in the cells that had migrated and were proliferative at the 'wound' edge. TGFbeta, which inhibits cell proliferation but not migration, inhibited the translocation of Pez to the nucleus in the cells at the 'wound' edge, further strengthening the argument that Pez plays a role in the nucleus during cell proliferation. Together, the data presented indicate that Pez is a nuclear tyrosine phosphatase that may play a role in cell proliferation.Carol Wadham, Jennifer R. Gamble, Mathew A. Vadas and Yeesim Khew-Goodal
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