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Ablation of protein phosphatase 5 (PP5) leads to enhanced both bone and cartilage development in mice

This study aimed to investigate the role of protein phosphatase 5 (PP5) on bone and cartilage development using both in vivo and in vitro approaches. Six- to 8-week- old male PP5 knockout mice (KO) and their wild-type (WT) littermate controls were randomly selected for this study, and their body wei...

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Autores principales: Wang, Jun, Cao, Yong, Qiu, Bin, Du, Jianyong, Wang, Tingting, Wang, Chao, Deng, Ran, Shi, Xudong, Gao, Kai, Xie, Zhongwen, Yong, Weidong
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5833428/
https://www.ncbi.nlm.nih.gov/pubmed/29434189
http://dx.doi.org/10.1038/s41419-017-0254-6
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author Wang, Jun
Cao, Yong
Qiu, Bin
Du, Jianyong
Wang, Tingting
Wang, Chao
Deng, Ran
Shi, Xudong
Gao, Kai
Xie, Zhongwen
Yong, Weidong
author_facet Wang, Jun
Cao, Yong
Qiu, Bin
Du, Jianyong
Wang, Tingting
Wang, Chao
Deng, Ran
Shi, Xudong
Gao, Kai
Xie, Zhongwen
Yong, Weidong
author_sort Wang, Jun
collection PubMed
description This study aimed to investigate the role of protein phosphatase 5 (PP5) on bone and cartilage development using both in vivo and in vitro approaches. Six- to 8-week- old male PP5 knockout mice (KO) and their wild-type (WT) littermate controls were randomly selected for this study, and their body weights and bone (femur) lengths were measured. Micro-computed tomography scanning (Micro-CT) was performed to determine femoral bone density and micro-architecture. Mesenchymal stem cells (MSCs) isolated from bone marrow were used to examine the effects of PP5 on osteogenesis in vitro. Whole-mount Alcian blue and Alizarin red staining were used to detect cartilage formation in newborn vertebrae, limbs, and feet. Hematoxylin and eosin (H&E) staining was performed to determine growth plate thickness. Real-time PCR analysis, western blotting, and immunohistochemistry were used to detect the expression of genes and proteins in bone marrow-derived MSCs as well as in bone and cartilage tissues. The results showed PP5 KO mice exhibited significantly reduced body weight and shorter femur length compared to WT controls. The KO mice also had significantly higher volumetric bone mineral density (BMD), trabecular bone volume, and cortical thickness in the femur. The deficiency of PP5 significantly enhanced the formation of cartilage in vertebrae, limbs, and feet. In addition, KO mice possessed a wider distal femur growth plates containing significantly more chondrocytes than WT mice. Furthermore, higher expressions of several cartilage-specific genes were observed in the articular cartilage of PP5 KO mice. Immunohistochemical labeling of growth plates demonstrated that phospho-PPARγ, Runx1, and Runx2 levels were considerably higher in the KO mice. In conclusion, PP5 is a significant negative regulator on the regulation of bone and cartilage development.
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spelling pubmed-58334282018-03-05 Ablation of protein phosphatase 5 (PP5) leads to enhanced both bone and cartilage development in mice Wang, Jun Cao, Yong Qiu, Bin Du, Jianyong Wang, Tingting Wang, Chao Deng, Ran Shi, Xudong Gao, Kai Xie, Zhongwen Yong, Weidong Cell Death Dis Article This study aimed to investigate the role of protein phosphatase 5 (PP5) on bone and cartilage development using both in vivo and in vitro approaches. Six- to 8-week- old male PP5 knockout mice (KO) and their wild-type (WT) littermate controls were randomly selected for this study, and their body weights and bone (femur) lengths were measured. Micro-computed tomography scanning (Micro-CT) was performed to determine femoral bone density and micro-architecture. Mesenchymal stem cells (MSCs) isolated from bone marrow were used to examine the effects of PP5 on osteogenesis in vitro. Whole-mount Alcian blue and Alizarin red staining were used to detect cartilage formation in newborn vertebrae, limbs, and feet. Hematoxylin and eosin (H&E) staining was performed to determine growth plate thickness. Real-time PCR analysis, western blotting, and immunohistochemistry were used to detect the expression of genes and proteins in bone marrow-derived MSCs as well as in bone and cartilage tissues. The results showed PP5 KO mice exhibited significantly reduced body weight and shorter femur length compared to WT controls. The KO mice also had significantly higher volumetric bone mineral density (BMD), trabecular bone volume, and cortical thickness in the femur. The deficiency of PP5 significantly enhanced the formation of cartilage in vertebrae, limbs, and feet. In addition, KO mice possessed a wider distal femur growth plates containing significantly more chondrocytes than WT mice. Furthermore, higher expressions of several cartilage-specific genes were observed in the articular cartilage of PP5 KO mice. Immunohistochemical labeling of growth plates demonstrated that phospho-PPARγ, Runx1, and Runx2 levels were considerably higher in the KO mice. In conclusion, PP5 is a significant negative regulator on the regulation of bone and cartilage development. Nature Publishing Group UK 2018-02-12 /pmc/articles/PMC5833428/ /pubmed/29434189 http://dx.doi.org/10.1038/s41419-017-0254-6 Text en © The Author(s) 2018 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Wang, Jun
Cao, Yong
Qiu, Bin
Du, Jianyong
Wang, Tingting
Wang, Chao
Deng, Ran
Shi, Xudong
Gao, Kai
Xie, Zhongwen
Yong, Weidong
Ablation of protein phosphatase 5 (PP5) leads to enhanced both bone and cartilage development in mice
title Ablation of protein phosphatase 5 (PP5) leads to enhanced both bone and cartilage development in mice
title_full Ablation of protein phosphatase 5 (PP5) leads to enhanced both bone and cartilage development in mice
title_fullStr Ablation of protein phosphatase 5 (PP5) leads to enhanced both bone and cartilage development in mice
title_full_unstemmed Ablation of protein phosphatase 5 (PP5) leads to enhanced both bone and cartilage development in mice
title_short Ablation of protein phosphatase 5 (PP5) leads to enhanced both bone and cartilage development in mice
title_sort ablation of protein phosphatase 5 (pp5) leads to enhanced both bone and cartilage development in mice
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5833428/
https://www.ncbi.nlm.nih.gov/pubmed/29434189
http://dx.doi.org/10.1038/s41419-017-0254-6
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