Western blot analysis of glucocorticoid receptor phosphoisoforms by one- and two-dimensional electrophoretic assays
Authors
Popović, Nataša M.Nićiforović, Ana
Adžić, Miroslav
Radojčić, Marija
Demonacos, Constantinos
Krstić-Demonacos, Marija
Article (Published version)
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The glucocorticoid receptor (GR) protein is a cytosolic ligand-dependent transcription factor with numerous functions regulated by post-translational modifications, including phosphorylation/dephosphorylation. Among the functions most extensively affected by GR phosphorylation are the modulation of its transcriptional activity, alterations in its interaction pattern with cofactors, nuclear translocation and selective gene transactivation. Intensive analysis of the intracellular distribution of GR phosphoisoforms and their interaction with proteins of other cellular signalling networks required the use of [gamma-(32)P]ATP as a phosphate donor, and special laboratory protection measures to avoid external irradiation and contamination. In the present study, simple and easy-to-use non-radioactive protein mobility shift assays (NMS assays) were developed using one- and/or two-dimensional gel electrophoresis based on differences in the pI and molecular mass of GR phosphoisoforms. The GR isof...orms were immunodetected with specific monoclonal or polyclonal anti-GR antibodies by Western blot in three diverse systems, namely yeast BJ2168 cells expressing wild-type rat GR, rat hepatoma GRH2 cells grown in culture and brain tissue from Wistar rat experimental animals. The results obtained using the NMS assay were similar to previous results obtained with the [gamma-(32)P] ATP standard assay.
Keywords:
glucocorticoid receptor / phosphoisoforms / electrophoretic assaySource:
Journal of the Serbian Chemical Society, 2009, 74, 3, 237-244Funding / projects:
- Ministry of Science and Technological Development of the Republic of Serbia [03E24, 143042B]
DOI: 10.2298/JSC0903237P
ISSN: 0352-5139
WoS: 000264850000002
Scopus: 2-s2.0-68949133250
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VinčaTY - JOUR AU - Popović, Nataša M. AU - Nićiforović, Ana AU - Adžić, Miroslav AU - Radojčić, Marija AU - Demonacos, Constantinos AU - Krstić-Demonacos, Marija PY - 2009 UR - https://vinar.vin.bg.ac.rs/handle/123456789/3667 AB - The glucocorticoid receptor (GR) protein is a cytosolic ligand-dependent transcription factor with numerous functions regulated by post-translational modifications, including phosphorylation/dephosphorylation. Among the functions most extensively affected by GR phosphorylation are the modulation of its transcriptional activity, alterations in its interaction pattern with cofactors, nuclear translocation and selective gene transactivation. Intensive analysis of the intracellular distribution of GR phosphoisoforms and their interaction with proteins of other cellular signalling networks required the use of [gamma-(32)P]ATP as a phosphate donor, and special laboratory protection measures to avoid external irradiation and contamination. In the present study, simple and easy-to-use non-radioactive protein mobility shift assays (NMS assays) were developed using one- and/or two-dimensional gel electrophoresis based on differences in the pI and molecular mass of GR phosphoisoforms. The GR isoforms were immunodetected with specific monoclonal or polyclonal anti-GR antibodies by Western blot in three diverse systems, namely yeast BJ2168 cells expressing wild-type rat GR, rat hepatoma GRH2 cells grown in culture and brain tissue from Wistar rat experimental animals. The results obtained using the NMS assay were similar to previous results obtained with the [gamma-(32)P] ATP standard assay. T2 - Journal of the Serbian Chemical Society T1 - Western blot analysis of glucocorticoid receptor phosphoisoforms by one- and two-dimensional electrophoretic assays VL - 74 IS - 3 SP - 237 EP - 244 DO - 10.2298/JSC0903237P ER -
@article{ author = "Popović, Nataša M. and Nićiforović, Ana and Adžić, Miroslav and Radojčić, Marija and Demonacos, Constantinos and Krstić-Demonacos, Marija", year = "2009", abstract = "The glucocorticoid receptor (GR) protein is a cytosolic ligand-dependent transcription factor with numerous functions regulated by post-translational modifications, including phosphorylation/dephosphorylation. Among the functions most extensively affected by GR phosphorylation are the modulation of its transcriptional activity, alterations in its interaction pattern with cofactors, nuclear translocation and selective gene transactivation. Intensive analysis of the intracellular distribution of GR phosphoisoforms and their interaction with proteins of other cellular signalling networks required the use of [gamma-(32)P]ATP as a phosphate donor, and special laboratory protection measures to avoid external irradiation and contamination. In the present study, simple and easy-to-use non-radioactive protein mobility shift assays (NMS assays) were developed using one- and/or two-dimensional gel electrophoresis based on differences in the pI and molecular mass of GR phosphoisoforms. The GR isoforms were immunodetected with specific monoclonal or polyclonal anti-GR antibodies by Western blot in three diverse systems, namely yeast BJ2168 cells expressing wild-type rat GR, rat hepatoma GRH2 cells grown in culture and brain tissue from Wistar rat experimental animals. The results obtained using the NMS assay were similar to previous results obtained with the [gamma-(32)P] ATP standard assay.", journal = "Journal of the Serbian Chemical Society", title = "Western blot analysis of glucocorticoid receptor phosphoisoforms by one- and two-dimensional electrophoretic assays", volume = "74", number = "3", pages = "237-244", doi = "10.2298/JSC0903237P" }
Popović, N. M., Nićiforović, A., Adžić, M., Radojčić, M., Demonacos, C.,& Krstić-Demonacos, M.. (2009). Western blot analysis of glucocorticoid receptor phosphoisoforms by one- and two-dimensional electrophoretic assays. in Journal of the Serbian Chemical Society, 74(3), 237-244. https://doi.org/10.2298/JSC0903237P
Popović NM, Nićiforović A, Adžić M, Radojčić M, Demonacos C, Krstić-Demonacos M. Western blot analysis of glucocorticoid receptor phosphoisoforms by one- and two-dimensional electrophoretic assays. in Journal of the Serbian Chemical Society. 2009;74(3):237-244. doi:10.2298/JSC0903237P .
Popović, Nataša M., Nićiforović, Ana, Adžić, Miroslav, Radojčić, Marija, Demonacos, Constantinos, Krstić-Demonacos, Marija, "Western blot analysis of glucocorticoid receptor phosphoisoforms by one- and two-dimensional electrophoretic assays" in Journal of the Serbian Chemical Society, 74, no. 3 (2009):237-244, https://doi.org/10.2298/JSC0903237P . .