Interleukin-1β enhances interleukin-1 receptor antagonist content in human somatotroph adenoma cell cultures
In addition to the well-known modulation of immune and inflammatory responses, the interleukin-1 (IL-1) system has been shown to be involved in the regulation of anterior pituitary hormone secretion and growth. We previously demonstrated that IL-1 receptor antagonist (IL-1ra) is expressed in human p...
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todo:paper_0021972X_v83_n7_p2429_Sauer2023-10-03T14:25:03Z Interleukin-1β enhances interleukin-1 receptor antagonist content in human somatotroph adenoma cell cultures Sauer, J. Renner, U. Hopfner, U. Lange, M. Müller, A. Strasburger, C.J. Pagotto, U. Arzt, E. Stalla, G.K. growth hormone interleukin 1 receptor blocking agent interleukin 1beta adult aged article cell culture cell growth clinical article concentration response cytokine release female gene expression regulation growth hormone blood level growth hormone release hormone release human human tissue hypophysis adenoma male priority journal somatic cell supernatant tissue level Adenoma Adult Aged Cells, Cultured Female Humans Interleukin-1 Male Middle Aged Monocytes Pituitary Neoplasms Receptors, Interleukin-1 Tumor Cells, Cultured In addition to the well-known modulation of immune and inflammatory responses, the interleukin-1 (IL-1) system has been shown to be involved in the regulation of anterior pituitary hormone secretion and growth. We previously demonstrated that IL-1 receptor antagonist (IL-1ra) is expressed in human pituitary adenomas cultured in vitro. In the present study, we investigated the regulation of IL-1ra protein by IL-1β (1-100 U/mL) in human somatotroph adenomas (n = 9) cultured for 12-48 h. IL-1β significantly enhanced the concentration of IL-1ra dose dependently in the somatotroph adenoma cell lysates, whereas IL-1ra concentrations remained unchanged in the culture supernatants. Furthermore, basal IL-1ra concentrations were significantly higher in the cell lysates compared with the corresponding culture supernatants. The regulation of IL-1ra in somatotroph adenoma cells is different from human cultured monocytes, in which IL-1β significantly stimulated IL-1ra secretion into the culture supernatants, and no change of intracellular IL-1ra content was observed. Incubation of the somatotroph adenoma cells with 100 U/mL IL-1β did not result in a change of GH concentrations in the culture supernatants. Enhancement of intracellular IL- 1ra protein by IL-1β may represent a mechanism intrinsic to somatotroph adenoma cells to counterregulate the response to IL-1β on hormone secretion or cellular growth. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_0021972X_v83_n7_p2429_Sauer |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
growth hormone interleukin 1 receptor blocking agent interleukin 1beta adult aged article cell culture cell growth clinical article concentration response cytokine release female gene expression regulation growth hormone blood level growth hormone release hormone release human human tissue hypophysis adenoma male priority journal somatic cell supernatant tissue level Adenoma Adult Aged Cells, Cultured Female Humans Interleukin-1 Male Middle Aged Monocytes Pituitary Neoplasms Receptors, Interleukin-1 Tumor Cells, Cultured |
| spellingShingle |
growth hormone interleukin 1 receptor blocking agent interleukin 1beta adult aged article cell culture cell growth clinical article concentration response cytokine release female gene expression regulation growth hormone blood level growth hormone release hormone release human human tissue hypophysis adenoma male priority journal somatic cell supernatant tissue level Adenoma Adult Aged Cells, Cultured Female Humans Interleukin-1 Male Middle Aged Monocytes Pituitary Neoplasms Receptors, Interleukin-1 Tumor Cells, Cultured Sauer, J. Renner, U. Hopfner, U. Lange, M. Müller, A. Strasburger, C.J. Pagotto, U. Arzt, E. Stalla, G.K. Interleukin-1β enhances interleukin-1 receptor antagonist content in human somatotroph adenoma cell cultures |
| topic_facet |
growth hormone interleukin 1 receptor blocking agent interleukin 1beta adult aged article cell culture cell growth clinical article concentration response cytokine release female gene expression regulation growth hormone blood level growth hormone release hormone release human human tissue hypophysis adenoma male priority journal somatic cell supernatant tissue level Adenoma Adult Aged Cells, Cultured Female Humans Interleukin-1 Male Middle Aged Monocytes Pituitary Neoplasms Receptors, Interleukin-1 Tumor Cells, Cultured |
| description |
In addition to the well-known modulation of immune and inflammatory responses, the interleukin-1 (IL-1) system has been shown to be involved in the regulation of anterior pituitary hormone secretion and growth. We previously demonstrated that IL-1 receptor antagonist (IL-1ra) is expressed in human pituitary adenomas cultured in vitro. In the present study, we investigated the regulation of IL-1ra protein by IL-1β (1-100 U/mL) in human somatotroph adenomas (n = 9) cultured for 12-48 h. IL-1β significantly enhanced the concentration of IL-1ra dose dependently in the somatotroph adenoma cell lysates, whereas IL-1ra concentrations remained unchanged in the culture supernatants. Furthermore, basal IL-1ra concentrations were significantly higher in the cell lysates compared with the corresponding culture supernatants. The regulation of IL-1ra in somatotroph adenoma cells is different from human cultured monocytes, in which IL-1β significantly stimulated IL-1ra secretion into the culture supernatants, and no change of intracellular IL-1ra content was observed. Incubation of the somatotroph adenoma cells with 100 U/mL IL-1β did not result in a change of GH concentrations in the culture supernatants. Enhancement of intracellular IL- 1ra protein by IL-1β may represent a mechanism intrinsic to somatotroph adenoma cells to counterregulate the response to IL-1β on hormone secretion or cellular growth. |
| format |
JOUR |
| author |
Sauer, J. Renner, U. Hopfner, U. Lange, M. Müller, A. Strasburger, C.J. Pagotto, U. Arzt, E. Stalla, G.K. |
| author_facet |
Sauer, J. Renner, U. Hopfner, U. Lange, M. Müller, A. Strasburger, C.J. Pagotto, U. Arzt, E. Stalla, G.K. |
| author_sort |
Sauer, J. |
| title |
Interleukin-1β enhances interleukin-1 receptor antagonist content in human somatotroph adenoma cell cultures |
| title_short |
Interleukin-1β enhances interleukin-1 receptor antagonist content in human somatotroph adenoma cell cultures |
| title_full |
Interleukin-1β enhances interleukin-1 receptor antagonist content in human somatotroph adenoma cell cultures |
| title_fullStr |
Interleukin-1β enhances interleukin-1 receptor antagonist content in human somatotroph adenoma cell cultures |
| title_full_unstemmed |
Interleukin-1β enhances interleukin-1 receptor antagonist content in human somatotroph adenoma cell cultures |
| title_sort |
interleukin-1β enhances interleukin-1 receptor antagonist content in human somatotroph adenoma cell cultures |
| url |
http://hdl.handle.net/20.500.12110/paper_0021972X_v83_n7_p2429_Sauer |
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