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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
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
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
Volumen:59
Número:6
Página de inicio:276
Página de fin:280
DOI: http://dx.doi.org/10.1159/000070625
Título revista:Hormone Research
Título revista abreviado:Horm. Res.
ISSN:03010163
CODEN:HRMRA
CAS:phytohemagglutinin, 9008-97-3; Receptor, IGF Type 1, EC 2.7.1.112; RNA, Messenger
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