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Endothelin signaling regulates mineralization and posttranscriptionally regulates SOST in TMOb cells via miR 126‐3p

Previously, our laboratory identified ECE‐1, encoding endothelin‐converting enzyme‐1 (ECE‐1), as a positional candidate for a pleiotropic quantitative trait locus affecting femoral size, shape, and biomechanical performance. We hypothesized that endothelin‐1 (ET‐1) signaling promotes osteogenesis. E...

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Autores principales: Johnson, Michael G., Konicke, Kathryn, Kristianto, Jasmin, Gustavson, Anne, Garbo, Rachel, Wang, Xiaohu, Yuan, Baozhi, Blank, Robert D.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley and Sons Inc. 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5328763/
https://www.ncbi.nlm.nih.gov/pubmed/28235973
http://dx.doi.org/10.14814/phy2.13088
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author Johnson, Michael G.
Konicke, Kathryn
Kristianto, Jasmin
Gustavson, Anne
Garbo, Rachel
Wang, Xiaohu
Yuan, Baozhi
Blank, Robert D.
author_facet Johnson, Michael G.
Konicke, Kathryn
Kristianto, Jasmin
Gustavson, Anne
Garbo, Rachel
Wang, Xiaohu
Yuan, Baozhi
Blank, Robert D.
author_sort Johnson, Michael G.
collection PubMed
description Previously, our laboratory identified ECE‐1, encoding endothelin‐converting enzyme‐1 (ECE‐1), as a positional candidate for a pleiotropic quantitative trait locus affecting femoral size, shape, and biomechanical performance. We hypothesized that endothelin‐1 (ET‐1) signaling promotes osteogenesis. Exposure of immortalized mouse osteoblast (TMOb) cells to big ET‐1 increased mineralization. Following big ET‐1 treatment, we measured the secretion of insulin‐like‐growth factor‐1 (IGF1), dickkopf‐homolog‐1 protein 1 (DKK1), and sclerostin (SOST). In each case, big ET‐1 signaling changed secretion in a manner that favored increased osteogenic activity. Treatment with ECE‐1, endothelin receptor A (EDNRA), or WNT receptor antagonists inhibited the big ET‐1‐mediated increase in mineralization. In the presence of big ET‐1, message levels of Runx2, Igf1, Dkk1, and Sost are uncoupled from protein production, suggesting posttranscriptional regulation. To evaluate the role of big ET‐1 in normal bone physiology, we inhibited EDNRA signaling during mineralization in the absence of exogenous ET‐1. EDNRA blockade reduced mineralization, decreased IGF1, and increased DKK1 and SOST secretion, responses opposite to those induced by exogenous big ET‐1. Pharmacological and siRNA knockdown to inhibit ECE‐1 reduced mineralization and IGF1 secretion with decreasing DKK1 and decreasing or stable SOST secretion, suggesting a further, unknown role of ECE‐1 in osteoblast maturation. Previously we identified miR 126‐3p as a potential ET‐1‐responsive regulator of SOST in murine cells. Overexpression of miR126‐3p increased mineralization in TMOb cells and decreased SOST secretion. Osteoblasts express the ET‐1 signaling pathway and ET‐1 signaling is necessary for normal osteoblast differentiation and mineralization, acting through regulation of miRs that target osteogenic molecules.
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spelling pubmed-53287632017-03-03 Endothelin signaling regulates mineralization and posttranscriptionally regulates SOST in TMOb cells via miR 126‐3p Johnson, Michael G. Konicke, Kathryn Kristianto, Jasmin Gustavson, Anne Garbo, Rachel Wang, Xiaohu Yuan, Baozhi Blank, Robert D. Physiol Rep Original Research Previously, our laboratory identified ECE‐1, encoding endothelin‐converting enzyme‐1 (ECE‐1), as a positional candidate for a pleiotropic quantitative trait locus affecting femoral size, shape, and biomechanical performance. We hypothesized that endothelin‐1 (ET‐1) signaling promotes osteogenesis. Exposure of immortalized mouse osteoblast (TMOb) cells to big ET‐1 increased mineralization. Following big ET‐1 treatment, we measured the secretion of insulin‐like‐growth factor‐1 (IGF1), dickkopf‐homolog‐1 protein 1 (DKK1), and sclerostin (SOST). In each case, big ET‐1 signaling changed secretion in a manner that favored increased osteogenic activity. Treatment with ECE‐1, endothelin receptor A (EDNRA), or WNT receptor antagonists inhibited the big ET‐1‐mediated increase in mineralization. In the presence of big ET‐1, message levels of Runx2, Igf1, Dkk1, and Sost are uncoupled from protein production, suggesting posttranscriptional regulation. To evaluate the role of big ET‐1 in normal bone physiology, we inhibited EDNRA signaling during mineralization in the absence of exogenous ET‐1. EDNRA blockade reduced mineralization, decreased IGF1, and increased DKK1 and SOST secretion, responses opposite to those induced by exogenous big ET‐1. Pharmacological and siRNA knockdown to inhibit ECE‐1 reduced mineralization and IGF1 secretion with decreasing DKK1 and decreasing or stable SOST secretion, suggesting a further, unknown role of ECE‐1 in osteoblast maturation. Previously we identified miR 126‐3p as a potential ET‐1‐responsive regulator of SOST in murine cells. Overexpression of miR126‐3p increased mineralization in TMOb cells and decreased SOST secretion. Osteoblasts express the ET‐1 signaling pathway and ET‐1 signaling is necessary for normal osteoblast differentiation and mineralization, acting through regulation of miRs that target osteogenic molecules. John Wiley and Sons Inc. 2017-02-24 /pmc/articles/PMC5328763/ /pubmed/28235973 http://dx.doi.org/10.14814/phy2.13088 Text en © 2017 The Authors. Physiological Reports published by Wiley Periodicals, Inc. on behalf of The Physiological Society and the American Physiological Society. This is an open access article under the terms of the Creative Commons Attribution (http://creativecommons.org/licenses/by/4.0/) License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
spellingShingle Original Research
Johnson, Michael G.
Konicke, Kathryn
Kristianto, Jasmin
Gustavson, Anne
Garbo, Rachel
Wang, Xiaohu
Yuan, Baozhi
Blank, Robert D.
Endothelin signaling regulates mineralization and posttranscriptionally regulates SOST in TMOb cells via miR 126‐3p
title Endothelin signaling regulates mineralization and posttranscriptionally regulates SOST in TMOb cells via miR 126‐3p
title_full Endothelin signaling regulates mineralization and posttranscriptionally regulates SOST in TMOb cells via miR 126‐3p
title_fullStr Endothelin signaling regulates mineralization and posttranscriptionally regulates SOST in TMOb cells via miR 126‐3p
title_full_unstemmed Endothelin signaling regulates mineralization and posttranscriptionally regulates SOST in TMOb cells via miR 126‐3p
title_short Endothelin signaling regulates mineralization and posttranscriptionally regulates SOST in TMOb cells via miR 126‐3p
title_sort endothelin signaling regulates mineralization and posttranscriptionally regulates sost in tmob cells via mir 126‐3p
topic Original Research
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5328763/
https://www.ncbi.nlm.nih.gov/pubmed/28235973
http://dx.doi.org/10.14814/phy2.13088
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