PubMed · 16856285
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Mark J DiNubile. 2006-07-20. Corticosteroids in ARDS.. https://pubmed.ncbi.nlm.nih.gov/16856285/
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A fusion protein of kinesin and gelsolin binds a short actin filament which can be visualized using a standard fluorescence microscope. This technique has provided new insight into the mechanism of kinesin action, and in principle it can be extended to allow single-molecule assays of any protein.
The activities of cell-derived lysophospholipid (LPL) growth factors on cellular proliferation and a range of proliferation-independent functions are regulated at multiple levels. This section focuses first on the capacity of the actin-severing protein gelsolin to bind lysophosphatidic acid (LPA), but not sphingosine 1-phosphate (S1P), and either sequester LPA or present it to responsive cells. Expression of members of the family of endothelial differentiation gene-encoded G protein-coupled receptors (Edg Rs) for LPLs is controlled developmentally and by cell-activating stimuli. Edg R transduction of cellular effects of LPLs involves both direct actions on target cells and induction of generation of proteins with relevant actions capable of amplifying or diminishing primary direct effects of LPLs. These general mechanisms are evident in Edg R mediation of proliferation, cytokine secretion and suppression of apoptosis. The availability of functionally-active anti-Edg R antibodies and Edg R-specific pharmacological probes, establishment of Edg R transgenes and gene knockouts, and identification of natural genetic anomalies of LPL metabolism and recognition by Edg Rs will permit elucidation of the in vivo activities of LPA and S1P normally and in disease states.