Abstract
In freshly isolated rat hepatocyte multiplets, Ca2+signals in response to vasopressin are highly organized. In this study we used specific probes to visualize, by fluorescence and confocal microscopy, the main signaling molecules involved in vasopressin-mediated Ca2+responses. V1a receptors were detected with a novel fluorescent antagonist, Rhm8-PVA. The Gαq/Gα11, PLCβ3, PIP2, and InsP3receptors were detected with specific antibodies. V1a vasopressin receptors and PIP2were associated with the basolateral membrane and were not detected in the bile canalicular domain. Gαq/Gα11, PLCβ3, and InsP3receptors were associated with the basolateral membrane and also with other intracellular structures. We used double labeling, Western blotting, and drugs (cytochalasin D, colchicine) known to disorganize the cytoskeleton to demonstrate the partial co-localization of Gαq/Gα11 with F-actin.
Bibliography
Tran, D., Stelly, N., Tordjmann, T., Durroux, T., Dufour, M. N., Forchioni, A., Seyer, R., Claret, M., & Guillon, G. (1999). Distribution of Signaling Molecules Involved in Vasopressin-induced Ca2+Mobilization in Rat Hepatocyte Multiplets. Journal of Histochemistry & Cytochemistry, 47(5), 601â616.
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Dates
Type | When |
---|---|
Created | 14 years, 5 months ago (April 1, 2011, 3:11 a.m.) |
Deposited | 6 months ago (March 4, 2025, 2:40 p.m.) |
Indexed | 6 months ago (March 5, 2025, 12:45 a.m.) |
Issued | 26 years, 4 months ago (May 1, 1999) |
Published | 26 years, 4 months ago (May 1, 1999) |
Published Online | 26 years, 4 months ago (May 1, 1999) |
Published Print | 26 years, 4 months ago (May 1, 1999) |
@article{Tran_1999, title={Distribution of Signaling Molecules Involved in Vasopressin-induced Ca2+Mobilization in Rat Hepatocyte Multiplets}, volume={47}, ISSN={1551-5044}, url={http://dx.doi.org/10.1177/002215549904700503}, DOI={10.1177/002215549904700503}, number={5}, journal={Journal of Histochemistry & Cytochemistry}, publisher={SAGE Publications}, author={Tran, Dien and Stelly, Nicole and Tordjmann, Thierry and Durroux, Thierry and Dufour, Marie Noelle and Forchioni, Arlette and Seyer, René and Claret, Michel and Guillon, Gilles}, year={1999}, month=may, pages={601–616} }