Abstract:
Objective: To investigate the kinetics of insulin-like growth factor-1 receptor (IGF-1R) expression in PHA-stimulated T lymphocytes. Methods: IGF-1R protein and mRNA were detected by flow cytometry and RT-PCR respectively, between 0 and 48 h after cell activation. Results: Few minutes after T lymphocytes were activated, internalization of the IGF-1R from the cell membrane was observed, achieving the lower level between 1 and 6 h and was accompanied by a reduction in its mRNA. This was followed by re-expression of IGF-1R on the cell surface and an increase in IGF-1R mRNA levels in the cytoplasm, reaching levels higher than those recorded initially after 48 h activation. Conclusion: This down- and up-regulation suggests that restoration of IGF-1R would be the result of receptor recycling and de novo synthesis and highlights its importance for T lymphocyte proliferation. Copyright © 2003 S. Karger AG, Basel.
Registro:
Documento: |
Artículo
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Título: | Insulin-like growth factor-1 receptor regulation in activated human T lymphocytes |
Autor: | Segretin, M.E.; Galeano, A.; Roldán, A.; Schillaci, R. |
Filiación: | Inst. de Biol. y Med. Exp. CONICET, Buenos Aires, Argentina Lab. de Patol. Sanatorio Mater Dei, Buenos Aires, Argentina Inst. de Biol. y Med. Experimental, Vuelta de Obligado 2490, 1428 Buenos Aires, Argentina
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Palabras clave: | Down-regulation; Insulin-like growth factor-1 receptor; T lymphocyte; Up-regulation; messenger RNA; phytohemagglutinin; somatomedin C receptor; article; cell membrane; cell surface; cell transport; flow cytometry; human; human cell; kinetics; lymphocyte proliferation; priority journal; protein expression; receptor upregulation; reverse transcription polymerase chain reaction; T lymphocyte; T lymphocyte activation; Down-Regulation; Flow Cytometry; Humans; Kinetics; Lymphocyte Activation; Receptor, IGF Type 1; Reverse Transcriptase Polymerase Chain Reaction; RNA, Messenger; T-Lymphocytes; Up-Regulation |
Año: | 2003
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Volumen: | 59
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Número: | 6
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Página de inicio: | 276
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Página de fin: | 280
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DOI: |
http://dx.doi.org/10.1159/000070625 |
Título revista: | Hormone Research
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Título revista abreviado: | Horm. Res.
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ISSN: | 03010163
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CODEN: | HRMRA
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CAS: | phytohemagglutinin, 9008-97-3; Receptor, IGF Type 1, EC 2.7.1.112; RNA, Messenger
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Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03010163_v59_n6_p276_Segretin |
Referencias:
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Citas:
---------- APA ----------
Segretin, M.E., Galeano, A., Roldán, A. & Schillaci, R.
(2003)
. Insulin-like growth factor-1 receptor regulation in activated human T lymphocytes. Hormone Research, 59(6), 276-280.
http://dx.doi.org/10.1159/000070625---------- CHICAGO ----------
Segretin, M.E., Galeano, A., Roldán, A., Schillaci, R.
"Insulin-like growth factor-1 receptor regulation in activated human T lymphocytes"
. Hormone Research 59, no. 6
(2003) : 276-280.
http://dx.doi.org/10.1159/000070625---------- MLA ----------
Segretin, M.E., Galeano, A., Roldán, A., Schillaci, R.
"Insulin-like growth factor-1 receptor regulation in activated human T lymphocytes"
. Hormone Research, vol. 59, no. 6, 2003, pp. 276-280.
http://dx.doi.org/10.1159/000070625---------- VANCOUVER ----------
Segretin, M.E., Galeano, A., Roldán, A., Schillaci, R. Insulin-like growth factor-1 receptor regulation in activated human T lymphocytes. Horm. Res. 2003;59(6):276-280.
http://dx.doi.org/10.1159/000070625