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Wang J, Xue M, Hu Y, Li J, Li Z, Wang Y. Proteomic Insights into Osteoporosis: Unraveling Diagnostic Markers of and Therapeutic Targets for the Metabolic Bone Disease. Biomolecules 2024; 14:554. [PMID: 38785961 PMCID: PMC11118602 DOI: 10.3390/biom14050554] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2024] [Revised: 04/25/2024] [Accepted: 05/01/2024] [Indexed: 05/25/2024] Open
Abstract
Osteoporosis (OP), a prevalent skeletal disorder characterized by compromised bone strength and increased susceptibility to fractures, poses a significant public health concern. This review aims to provide a comprehensive analysis of the current state of research in the field, focusing on the application of proteomic techniques to elucidate diagnostic markers and therapeutic targets for OP. The integration of cutting-edge proteomic technologies has enabled the identification and quantification of proteins associated with bone metabolism, leading to a deeper understanding of the molecular mechanisms underlying OP. In this review, we systematically examine recent advancements in proteomic studies related to OP, emphasizing the identification of potential biomarkers for OP diagnosis and the discovery of novel therapeutic targets. Additionally, we discuss the challenges and future directions in the field, highlighting the potential impact of proteomic research in transforming the landscape of OP diagnosis and treatment.
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Affiliation(s)
- Jihan Wang
- Xi’an Key Laboratory of Stem Cell and Regenerative Medicine, Institute of Medical Research, Northwestern Polytechnical University, Xi’an 710072, China; (J.W.)
| | - Mengju Xue
- School of Medicine, Xi’an International University, Xi’an 710077, China
| | - Ya Hu
- Department of Medical College, Hunan Polytechnic of Environment and Biology, Hengyang 421000, China
| | - Jingwen Li
- Xi’an Key Laboratory of Stem Cell and Regenerative Medicine, Institute of Medical Research, Northwestern Polytechnical University, Xi’an 710072, China; (J.W.)
- Research and Development Institute of Northwestern Polytechnical University in Shenzhen, Shenzhen 518057, China
| | - Zhenzhen Li
- Xi’an Key Laboratory of Stem Cell and Regenerative Medicine, Institute of Medical Research, Northwestern Polytechnical University, Xi’an 710072, China; (J.W.)
- Research and Development Institute of Northwestern Polytechnical University in Shenzhen, Shenzhen 518057, China
| | - Yangyang Wang
- School of Electronics and Information, Northwestern Polytechnical University, Xi’an 710129, China
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Yan Y, Huang S, Huang L, Zhang J, Li S, Zhang C, Luo X. Molecular Genetic Analysis and Growth Hormone Treatment in a Three-Generation Chinese Family with Tricho-Rhino-Phalangeal Syndrome I. Horm Res Paediatr 2023; 97:28-39. [PMID: 36990068 DOI: 10.1159/000530414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/31/2022] [Accepted: 03/20/2023] [Indexed: 03/31/2023] Open
Abstract
INTRODUCTION Tricho-rhino-phalangeal syndrome (TRPS) is a rare genetic disorder characterized by craniofacial and skeletal abnormalities, which is caused by variants in the TRPS1 gene. METHODS Clinical information and follow-up data were collected. Whole-exome sequencing (WES) was performed for variants and validated by Sanger sequencing. Bioinformatic analysis was performed to predict the pathogenicity of the identified variant. Moreover, wild-type and mutated TRPS1 vectors were constructed and transfected into human embryonic kidney (HEK) 293T cells. Immunofluorescence experiments were performed to assess the localization and expression of the mutated protein. Western blot analysis and RT-qPCR were used to detect the expression of downstream genes. RESULTS The affected family members had typical craniofacial phenotype including sparse lateral eyebrows, pear-shaped nasal tip, and large prominent ears, plus skeletal abnormalities including short stature and brachydactyly. WES and Sanger sequencing identified the TRPS1 c.880_882delAAG variant in affected family members. In vitro functional studies showed that the TRPS1 variant did not affect the cellular localization and the expression of TRPS1, but the transcriptional repression effect of the TRPS1 on the RUNX2 and STAT3 was disturbed. The proband and his brother have been treated with growth hormone (GH) for 2 years until now, and we have observed the improvement of the linear growth in both. CONCLUSIONS The variant of c.880_882delAAG in TRPS1 was responsible for the pathogenesis of the Chinese family with TRPS I. The treatment of GH could be beneficial for the height outcome in TRPS I patients, and earlier initiation and longer duration of the therapy in prepubertal or early pubertal stage could be associated with better height outcomes.
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Affiliation(s)
- Yaqin Yan
- Department of Pediatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China,
| | - Shan Huang
- Department of Pediatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Lianjing Huang
- Department of Pediatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jingyi Zhang
- Department of Pediatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Sujuan Li
- Department of Pediatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Cai Zhang
- Department of Pediatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xiaoping Luo
- Department of Pediatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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Tang W, Li ZW, Miao GQ, Li ZP, Gui T, Wu CJ, Li ZY, Yang J, Zhao XD, Liu N, Zha ZG, Yao LT, Zhang HT. Single-Cell RNA Sequencing Reveals Transcriptional Changes in the Cartilage of Subchondral Insufficiency Fracture of the Knee. J Inflamm Res 2022; 15:6105-6112. [PMID: 36386577 PMCID: PMC9645121 DOI: 10.2147/jir.s385648] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Accepted: 11/01/2022] [Indexed: 11/06/2022] Open
Abstract
Purpose Subchondral insufficiency fracture of the knee (SIFK) is a common cause of knee joint pain that mainly afflicts the elderly. Until now, how a sudden insufficiency fracture of subchondral bone affects the transcriptomic profiles of cartilage in SIFK and OA patients are largely unknown. Methods Single-cell RNA sequencing (scRNA-seq) was used to identify various cell subsets and evaluate transcriptomic differences in cartilage of SIFK and OA patients. In addition, the above findings were confirmed by histological evaluation and immunohistochemical (IHC) staining. Results We found that the transcriptomic profiles of cartilage in the SIFK patient was completely different from those of normal and OA patients. Accordingly, several novel cell clusters with activation of hypoxia and endochondral ossification signaling were identified in the SIFK cartilage. Chondrocyte trajectories analysis and IHC staining revealed that transcription factors including TCF4 were found to be highly up-regulated during the occurrence of SIFK, which might drive the reactive formation of cartilage and fibrous tissue and the activation of endochondral ossification. Conclusion This is the first report to elucidate the transcriptomic alterations and distinct cell type subpopulations in the cartilage of SIFK and OA by the use of scRNA-seq, which provides a new insight in the understanding of the initiation and progression of SIFK.
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Affiliation(s)
- Wang Tang
- Department of Bone and Joint Surgery, The First Affiliated Hospital of Jinan University, Guangzhou, 510630, People’s Republic of China
| | - Zhen-Wei Li
- Department of Bone and Joint Surgery, The First Affiliated Hospital of Jinan University, Guangzhou, 510630, People’s Republic of China
| | - Gui-Qiang Miao
- Department of Orthopedics, Foshan Fosun Chancheng Hospital, Foshan, 528010, People’s Republic of China
| | - Zhi-Peng Li
- Department of Bone and Joint Surgery, The First Affiliated Hospital of Jinan University, Guangzhou, 510630, People’s Republic of China
| | - Tao Gui
- Department of Bone and Joint Surgery, The First Affiliated Hospital of Jinan University, Guangzhou, 510630, People’s Republic of China
| | - Chong-Jie Wu
- Department of Bone and Joint Surgery, The First Affiliated Hospital of Jinan University, Guangzhou, 510630, People’s Republic of China
| | - Zhen-Yan Li
- Department of Bone and Joint Surgery, The First Affiliated Hospital of Jinan University, Guangzhou, 510630, People’s Republic of China
| | - Jie Yang
- Department of Bone and Joint Surgery, The First Affiliated Hospital of Jinan University, Guangzhou, 510630, People’s Republic of China
| | - Xiao-Dong Zhao
- Department of Orthopedics, Foshan Fosun Chancheng Hospital, Foshan, 528010, People’s Republic of China
| | - Ning Liu
- Department of Bone and Joint Surgery, The First Affiliated Hospital of Jinan University, Guangzhou, 510630, People’s Republic of China
| | - Zhen-Gang Zha
- Department of Bone and Joint Surgery, The First Affiliated Hospital of Jinan University, Guangzhou, 510630, People’s Republic of China
| | - Lu-Tian Yao
- Department of Orthopedics, The First Hospital of China Medical University, Shenyang, 110001, People’s Republic of China
- Correspondence: Lu-Tian Yao; Huan-Tian Zhang, Email ;
| | - Huan-Tian Zhang
- Department of Bone and Joint Surgery, The First Affiliated Hospital of Jinan University, Guangzhou, 510630, People’s Republic of China
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Recombinant Human Growth Hormone Therapy for Childhood Trichorhinophalangeal Syndrome Type I: A Case Report. CHILDREN (BASEL, SWITZERLAND) 2022; 9:children9101447. [PMID: 36291383 PMCID: PMC9600025 DOI: 10.3390/children9101447] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/06/2022] [Revised: 09/05/2022] [Accepted: 09/14/2022] [Indexed: 11/26/2022]
Abstract
Trichorhinophalangeal syndrome type I (TRPS I; MIM 190350) is a rare autosomal dominant disorder of congenital malformations due to variants of the gene TRPS1. We reported on an 11-year-old Chinese boy with TRPS I. He had typical clinical findings, including sparse hair, a bulbous nose, a long philtrum, a thin upper lip, and skeletal abnormalities including cone-shaped epiphyses, shortening of the phalanges, and short stature. Trio whole exome sequencing identified a likely pathogenic heterozygous variant c.1957C > T (p.Q653*) in exon 4 of TRPS1, which has not been previously reported. He had been treated with rhGH therapy at a dose of 0.34 mg/(kg/week) at age 11, and a follow-up was conducted for one year. The rhGH therapy led to an increase in growth with a mean growth velocity of 1.12 cm/month (+1.1 SDS/year), and insulin-like growth factor 1 (IGF-1) concentration increased within normal range in our case. Moreover, we summarize 12 cases with TRPS I, including TRPS1 gene variants, growth hormone (GH) axis evaluation, IGF-1 concentration, and treatment in each analyzed case. Eight cases with TRPS I show a good response to rhGH therapy, and five of them have elevated IGF-1. Classic GH deficiency is not common among patients with TRPS I. The presence or absence of GH deficiency is not an absolute criterion for determining whether rhGH therapy should be used in TRPS I. It proves that rhGH therapy improves height outcomes before puberty in TRPS I in the short term. Effects on final adult height will need a longer follow-up and more adult-height data. The rise in IGF-1 could correlate with an increase in short-term height. Measuring IGF-1 levels is recommended as part of the assessment during the follow-up of patients with TRPS I.
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Functional mechanisms of TRPS1 in disease progression and its potential role in personalized medicine. Pathol Res Pract 2022; 237:154022. [PMID: 35863130 DOI: 10.1016/j.prp.2022.154022] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Revised: 07/04/2022] [Accepted: 07/12/2022] [Indexed: 11/22/2022]
Abstract
The gene of transcriptional repressor GATA binding 1 (TRPS1), as an atypical GATA transcription factor, has received considerable attention in a plethora of physiological and pathological processes, and may become a promising biomarker for targeted therapies in diseases and tumors. However, there still lacks a comprehensive exploration of its functions and promising clinical applications. Herein, relevant researches published in English from 2000 to 2022 were retrieved from PubMed, Google Scholar and MEDLINE, concerning the roles of TRPS1 in organ differentiation and tumorigenesis. This systematic review predominantly focused on summarizing the structural characteristics and biological mechanisms of TRPS1, its involvement in tricho-rhino-phalangeal syndrome (TRPS), its participation in the development of multiple tissues, the recent advances of its vital features in metabolic disorders as well as malignant tumors, in order to prospect its potential applications in disease detection and cancer targeted therapy. From the clinical perspective, the deeply and thoroughly understanding of the complicated context-dependent and cell-lineage-specific mechanisms of TRPS1 would not only gain novel insights into the complex etiology of diseases, but also provide the fundamental basis for the development of therapeutic drugs targeting both TRPS1 and its critical cofactors, which would facilitate individualized treatment.
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Zhai Q, Zhao Y, Wang L, Dai Y, Zhao P, Xiang X, Liu K, Du W, Tian W, Yang B, Li T, Wang L. CircRNA hsa_circ_0008500 Acts as a miR-1301-3p Sponge to Promote Osteoblast Mineralization by Upregulating PADI4. Front Cell Dev Biol 2020; 8:602731. [PMID: 33363159 PMCID: PMC7759526 DOI: 10.3389/fcell.2020.602731] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Accepted: 11/16/2020] [Indexed: 12/18/2022] Open
Abstract
Circular RNAs (circRNAs) are regarded as pivotal regulators in bone metabolism. However, the role of circRNAs in osteoblast mineralization remains largely unknown. Herein, we explored the expression profiles of circRNAs in 4 groups of osteoblasts with varying mineralization processes. Hsa_circ_0008500 (circ8500), which is upregulated in the RNA-seq data, is sifted through 194 candidate circRNAs in osteoblasts during mineralization. We characterize the features of novel circRNAs and find that the elevated expression of circ8500 promotes osteoblast mineralization. Mechanistically, circ8500 contains a critical binding site for miR-1301-3p. We further show that circ8500 competitively binds miR-1301-3p to abolish its suppressive effect on peptidyl arginine deiminase 4 (PADI4). PADI4 works as a binding partner of RUNX2 and stabilizes its protein expression levels by inhibiting the ubiquitin-proteasome pathway. This work provides new insights on the circRNA patterns in osteoblasts and the role of PADI4 in matrix mineralization.
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Affiliation(s)
- Qiaoli Zhai
- Center of Translational Medicine, Zibo Central Hospital, Shandong University, Zibo, China
| | - Yi Zhao
- School of Stomatology, Shandong University, Jinan, China
| | - Linping Wang
- Center of Translational Medicine, Zibo Central Hospital, Shandong University, Zibo, China
| | - Yan Dai
- School of Stomatology, Shandong University, Jinan, China
| | - Peiqing Zhao
- Center of Translational Medicine, Zibo Central Hospital, Shandong University, Zibo, China
| | - Xinxin Xiang
- Center of Translational Medicine, Zibo Central Hospital, Shandong University, Zibo, China
| | - Kui Liu
- Center of Translational Medicine, Zibo Central Hospital, Shandong University, Zibo, China
| | - Wenyan Du
- Center of Translational Medicine, Zibo Central Hospital, Shandong University, Zibo, China
| | - Wenxiu Tian
- Center of Translational Medicine, Zibo Central Hospital, Shandong University, Zibo, China
| | - Baoye Yang
- Center of Translational Medicine, Zibo Central Hospital, Shandong University, Zibo, China
| | - Tao Li
- Center of Translational Medicine, Zibo Central Hospital, Shandong University, Zibo, China
| | - Lianqing Wang
- Center of Translational Medicine, Zibo Central Hospital, Shandong University, Zibo, China
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Socorro M, Shinde A, Yamazaki H, Khalid S, Monier D, Beniash E, Napierala D. Trps1 transcription factor represses phosphate-induced expression of SerpinB2 in osteogenic cells. Bone 2020; 141:115673. [PMID: 33022456 PMCID: PMC7680451 DOI: 10.1016/j.bone.2020.115673] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Revised: 09/24/2020] [Accepted: 09/29/2020] [Indexed: 12/13/2022]
Abstract
Serine protease inhibitor SerpinB2 is one of the most upregulated proteins following cellular stress. This multifunctional serpin has been attributed a number of pleiotropic activities, including roles in cell survival, proliferation, differentiation, immunity and extracellular matrix (ECM) remodeling. Studies of cancer cells demonstrated that expression of SerpinB2 is directly repressed by the Trps1 transcription factor, which is a regulator of skeletal and dental tissues mineralization. In our previous studies, we identified SerpinB2 as one of the novel genes highly upregulated by phosphate (Pi) at the initiation of the mineralization process, however SerpinB2 has never been implicated in formation nor homeostasis of mineralized tissues. The aim of this study was to establish, if SerpinB2 is involved in function of cells producing mineralized ECM and to determine the interplay between Pi signaling and Trps1 in the regulation of SerpinB2 expression specifically in cells producing mineralized ECM. Analyses of the SerpinB2 expression pattern in mouse skeletal and dental tissues detected high SerpinB2 protein levels specifically in cells producing mineralized ECM. qRT-PCR and Western blot analyses demonstrated that SerpinB2 expression is activated by elevated Pi specifically in osteogenic cells. However, the Pi-induced SerpinB2 expression was diminished by overexpression of Trps1. Decreased SerpinB2 levels were also detected in osteoblasts and odontoblasts of 2.3Col1a1-Trps1 transgenic mice. Chromatin immunoprecipitation assay (ChIP) revealed that the occupancy of Trps1 on regulatory elements in the SerpinB2 gene changes in response to Pi. In vitro functional assessment of the consequences of SerpinB2 deficiency in cells producing mineralized ECM detected impaired mineralization in SerpinB2-deficient cells in comparison with controls. In conclusion, high and specific expression of SerpinB2 in cells producing mineralized ECM, the impaired mineralization of SerpinB2-deficient cells and regulation of SerpinB2 expression by two molecules regulating formation of mineralized tissues suggest involvement of SerpinB2 in physiological mineralization.
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Affiliation(s)
- Mairobys Socorro
- Center for Craniofacial Regeneration, Department of Oral Biology, University of Pittsburgh School of Dental Medicine, Pittsburgh, PA, USA
| | - Apurva Shinde
- Center for Craniofacial Regeneration, Department of Oral Biology, University of Pittsburgh School of Dental Medicine, Pittsburgh, PA, USA
| | - Hajime Yamazaki
- Center for Craniofacial Regeneration, Department of Oral Biology, University of Pittsburgh School of Dental Medicine, Pittsburgh, PA, USA
| | - Sana Khalid
- Center for Craniofacial Regeneration, Department of Oral Biology, University of Pittsburgh School of Dental Medicine, Pittsburgh, PA, USA
| | - Daisy Monier
- Center for Craniofacial Regeneration, Department of Oral Biology, University of Pittsburgh School of Dental Medicine, Pittsburgh, PA, USA
| | - Elia Beniash
- Center for Craniofacial Regeneration, Department of Oral Biology, University of Pittsburgh School of Dental Medicine, Pittsburgh, PA, USA; McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA, USA
| | - Dobrawa Napierala
- Center for Craniofacial Regeneration, Department of Oral Biology, University of Pittsburgh School of Dental Medicine, Pittsburgh, PA, USA; McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA, USA.
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Nakamichi R, Kurimoto R, Tabata Y, Asahara H. Transcriptional, epigenetic and microRNA regulation of growth plate. Bone 2020; 137:115434. [PMID: 32422296 PMCID: PMC7387102 DOI: 10.1016/j.bone.2020.115434] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Revised: 05/13/2020] [Accepted: 05/13/2020] [Indexed: 11/22/2022]
Abstract
Endochondral ossification is a critical event in bone formation, particularly in long shaft bones. Many cellular differentiation processes work in concert to facilitate the generation of cartilage primordium to formation of trabecular structures, all of which occur within the growth plate. Previous studies have revealed that the growth plate is tightly regulated by various transcription factors, epigenetic systems, and microRNAs. Hence, understanding these mechanisms that regulate the growth plate is crucial to furthering the current understanding on skeletal diseases, and in formulating effective treatment strategies. In this review, we focus on describing the function and mechanisms of the transcription factors, epigenetic systems, and microRNAs known to regulate the growth plate.
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Affiliation(s)
- Ryo Nakamichi
- Department of Molecular and Experimental Medicine, The Scripps Research Institute, 10550 North Torrey Pines Road, MBB-102, La Jolla, CA 92037, USA; Department of Orthopaedic Surgery, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, 2-5-1 Shikata-cho, Kita-ku, Okayama 700-8558, Japan
| | - Ryota Kurimoto
- Department of Systems Biomedicine, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo 113-8510, Japan
| | - Yusuke Tabata
- Department of Orthopaedic Surgery, Nippon Medical School, 1-1-5 Sendagi, Bunkyo-ku, Tokyo 113-8603, Japan
| | - Hirosi Asahara
- Department of Molecular and Experimental Medicine, The Scripps Research Institute, 10550 North Torrey Pines Road, MBB-102, La Jolla, CA 92037, USA; Department of Systems Biomedicine, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo 113-8510, Japan.
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Jacques C, Tesfaye R, Lavaud M, Georges S, Baud’huin M, Lamoureux F, Ory B. Implication of the p53-Related miR-34c, -125b, and -203 in the Osteoblastic Differentiation and the Malignant Transformation of Bone Sarcomas. Cells 2020; 9:cells9040810. [PMID: 32230926 PMCID: PMC7226610 DOI: 10.3390/cells9040810] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Revised: 03/24/2020] [Accepted: 03/25/2020] [Indexed: 02/07/2023] Open
Abstract
The formation of the skeleton occurs throughout the lives of vertebrates and is achieved through the balanced activities of two kinds of specialized bone cells: the bone-forming osteoblasts and the bone-resorbing osteoclasts. Impairment in the remodeling processes dramatically hampers the proper healing of fractures and can also result in malignant bone diseases such as osteosarcoma. MicroRNAs (miRNAs) are a class of small non-coding single-strand RNAs implicated in the control of various cellular activities such as proliferation, differentiation, and apoptosis. Their post-transcriptional regulatory role confers on them inhibitory functions toward specific target mRNAs. As miRNAs are involved in the differentiation program of precursor cells, it is now well established that this class of molecules also influences bone formation by affecting osteoblastic differentiation and the fate of osteoblasts. In response to various cell signals, the tumor-suppressor protein p53 activates a huge range of genes, whose miRNAs promote genomic-integrity maintenance, cell-cycle arrest, cell senescence, and apoptosis. Here, we review the role of three p53-related miRNAs, miR-34c, -125b, and -203, in the bone-remodeling context and, in particular, in osteoblastic differentiation. The second aim of this study is to deal with the potential implication of these miRNAs in osteosarcoma development and progression.
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Polygenic risk score for disability and insights into disability-related molecular mechanisms. GeroScience 2019; 41:881-893. [PMID: 31707593 DOI: 10.1007/s11357-019-00125-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Accepted: 10/15/2019] [Indexed: 10/25/2022] Open
Abstract
Late life disability is a highly devastating condition affecting 20% or more of persons aged 65 years and older in the USA; it is an important determinant of acute medical and long-term care costs which represent a growing burden on national economies. Disability is a multifactorial trait that contributes substantially to decline of health/wellbeing. Accordingly, gaining insights into the genetics of disability could help in identifying molecular mechanisms of this devastating condition and age-related processes contributing to a large fraction of specific geriatric conditions, concordantly with geroscience. We performed a genome-wide association study of disability in a sample of 24,068 subjects from five studies with 12,550 disabled individuals. We identified 30 promising disability-associated polymorphisms in 19 loci at p < 10-4; four of them attained suggestive significance, p < 10-5. In contrast, polygenic risk scores aggregating effects of minor alleles of independent SNPs that were adversely or beneficially associated with disability showed highly significant associations in meta-analysis, p = 3.13 × 10-45 and p = 5.60 × 10-23, respectively, and were replicated in each study. The analysis of genetic pathways, related diseases, and biological functions supported the connections of genes for the identified SNPs with disabling and age-related conditions primarily through oxidative/nitrosative stress, inflammatory response, and ciliary signaling. We identified musculoskeletal system development, maintenance, and regeneration as important components of gene functions. The beneficial and adverse gene sets may be differently implicated in the development of musculoskeletal-related disability with the beneficial set characterized, e.g., by regulation of chondrocyte proliferation and bone formation, and the adverse set by inflammation and bone loss.
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Penolazzi L, Lambertini E, Scussel Bergamin L, Gandini C, Musio A, De Bonis P, Cavallo M, Piva R. Reciprocal Regulation of TRPS1 and miR-221 in Intervertebral Disc Cells. Cells 2019; 8:cells8101170. [PMID: 31569377 PMCID: PMC6829335 DOI: 10.3390/cells8101170] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2019] [Revised: 09/25/2019] [Accepted: 09/27/2019] [Indexed: 12/13/2022] Open
Abstract
Intervertebral disc (IVD), a moderately moving joint located between the vertebrae, has a limited capacity for self-repair, and treating injured intervertebral discs remains a major challenge. The development of innovative therapies to reverse IVD degeneration relies primarily on the discovery of key molecules that, occupying critical points of regulatory mechanisms, can be proposed as potential intradiscal injectable biological agents. This study aimed to elucidate the underlying mechanism of the reciprocal regulation of two genes differently involved in IVD homeostasis, the miR-221 microRNA and the TRPS1 transcription factor. Human lumbar IVD tissue samples and IVD primary cells were used to specifically evaluate gene expression and perform functional analysis including the luciferase gene reporter assay, chromatin immunoprecipitation, cell transfection with hTRPS1 overexpression vector and antagomiR-221. A high-level expression of TRPS1 was significantly associated with a lower pathological stage, and TRPS1 overexpression strongly decreased miR-221 expression, while increasing the chondrogenic phenotype and markers of antioxidant defense and stemness. Additionally, TRPS1 was able to repress miR-221 expression by associating with its promoter and miR-221 negatively control TRPS1 expression by targeting the TRPS1-3'UTR gene. As a whole, these results suggest that, in IVD cells, a double-negative feedback loop between a potent chondrogenic differentiation suppressor (miR-221) and a regulator of axial skeleton development (TRPS1) exists. Our hypothesis is that the hostile degenerated IVD microenvironment may be counteracted by regenerative/reparative strategies aimed at maintaining or stimulating high levels of TRPS1 expression through inhibition of one of its negative regulators such as miR-221.
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Affiliation(s)
- Letizia Penolazzi
- Department of Biomedical and Specialty Surgical Sciences, University of Ferrara, 44121 Ferrara, Italy.
| | - Elisabetta Lambertini
- Department of Biomedical and Specialty Surgical Sciences, University of Ferrara, 44121 Ferrara, Italy.
| | - Leticia Scussel Bergamin
- Department of Biomedical and Specialty Surgical Sciences, University of Ferrara, 44121 Ferrara, Italy.
| | - Carlotta Gandini
- Department of Biomedical and Specialty Surgical Sciences, University of Ferrara, 44121 Ferrara, Italy.
| | - Antonio Musio
- Department of Neurosurgery, S. Anna University Hospital, 44124 Ferrara, Italy.
| | - Pasquale De Bonis
- Department of Neurosurgery, S. Anna University Hospital, 44124 Ferrara, Italy.
| | - Michele Cavallo
- Department of Neurosurgery, S. Anna University Hospital, 44124 Ferrara, Italy.
| | - Roberta Piva
- Department of Biomedical and Specialty Surgical Sciences, University of Ferrara, 44121 Ferrara, Italy.
- Center for Studies on Gender Medicine, University of Ferrara, 44121 Ferrara, Italy.
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12
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Karaca A, Reyes M, Shumate LT, Taskaldiran I, Omma T, Ersoz Gulcelik N, Bastepe M. Severe brachydactyly and short stature resulting from a novel pathogenic TRPS1 variant within the GATA DNA-binding domain. Bone 2019; 123:153-158. [PMID: 30914275 PMCID: PMC6506180 DOI: 10.1016/j.bone.2019.03.028] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/14/2018] [Revised: 03/04/2019] [Accepted: 03/21/2019] [Indexed: 12/22/2022]
Abstract
Brachydactyly type E, which can be an isolated finding or part of a syndrome in combination with other clinical anomalies, involves metacarpals and metatarsals with or without short phalanges. Herein we report two unrelated Turkish females who presented with brachydactyly type E and vitamin D deficiency in the absence of marked alterations in serum calcium, phosphate, and parathyroid hormone. After excluding disease-causing variants in two candidate genes, PTHLH and PDE4D, we identified different pathogenic variants in TRPS1, the gene mutated in patients with tricho-rhino-phalangeal syndrome (TRPS). In one of the patients, who displayed severe brachydactyly and short stature, we identified a novel heterozygous missense pathogenic variant in exon 6 (c.2783A>G, p.Tyr928Cys), located within the GATA DNA-binding domain. The second patient, who had relatively milder brachydactyly and was of normal height, carried a heterozygous nonsense pathogenic variant in exon 4 (c. 1870C>T, p.Arg624Ter), which has been previously described. Both pathogenic variants segregated in affected family members. The patients additionally showed sparse hair and a bulbous nose, consistent with the clinical features of TRPS. Our findings, in addition to identifying the genetic cause of brachydactyly in two unrelated kindreds, emphasize the role of pathogenic TRPS1 variants in the development of brachydactyly type E and highlight the GATA DNA-binding region of TRPS1 protein with respect to phenotype-genotype correlation.
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Affiliation(s)
- Anara Karaca
- Endocrine Unit, Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA; Department of Endocrinology and Metabolism, Ankara Training and Research Hospital, Ankara, Turkey
| | - Monica Reyes
- Endocrine Unit, Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Lauren T Shumate
- Endocrine Unit, Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Isilay Taskaldiran
- Department of Endocrinology and Metabolism, Ankara Training and Research Hospital, Ankara, Turkey
| | - Tulay Omma
- Department of Endocrinology and Metabolism, Ankara Training and Research Hospital, Ankara, Turkey
| | - Nese Ersoz Gulcelik
- Department of Endocrinology and Metabolism, Ankara Training and Research Hospital, Ankara, Turkey
| | - Murat Bastepe
- Endocrine Unit, Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA.
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13
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Goss M, Socorro M, Monier D, Verdelis K, Napierala D. Trps1 transcription factor regulates mineralization of dental tissues and proliferation of tooth organ cells. Mol Genet Metab 2019; 126:504-512. [PMID: 30691926 PMCID: PMC6535116 DOI: 10.1016/j.ymgme.2019.01.014] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/20/2018] [Revised: 01/17/2019] [Accepted: 01/18/2019] [Indexed: 10/27/2022]
Abstract
Mutations of the TRPS1 gene cause trichorhinophalangeal syndrome (TRPS), a skeletal dysplasia with dental abnormalities. TRPS dental phenotypes suggest that TRPS1 regulates multiple aspects of odontogenesis, including the tooth number and size. Previous studies delineating Trps1 expression throughout embryonic tooth development in mice detected strong Trps1 expression in dental mesenchyme, preodontoblasts, and dental follicles, suggesting that TRPS dental phenotypes result from abnormalities in early developmental processes. In this study, Trps1+/- and Trps1-/- mice were analyzed to determine consequences of Trps1 deficiency on odontogenesis. We focused on the aspects of tooth formation that are disturbed in TRPS and on potential molecular abnormalities underlying TRPS dental phenotypes. Microcomputed tomography analyses of molars were used to determine tooth size, crown shape, and mineralization of dental tissues. These analyses uncovered that disruption of one Trps1 allele is sufficient to impair mineralization of dentin in both male and female mice. Enamel mineral density was decreased only in males, while mineralization of the root dental tissues was decreased only in females. In addition, significantly smaller teeth were detected in Trps1+/- females. Histomorphometric analyses of tooth organs showed reduced anterior-posterior diameter in Trps1-/- mice. BrdU-incorporation assay detected reduced proliferation of mesenchymal and epithelial cells in Trps1-/- tooth organs. Immunohistochemistry for Runx2 and Osx osteogenic transcription factors revealed changes in their spatial distribution in Trps1-/- tooth organs and uncovered cell-type specific requirements of Trps1 for Osx expression. In conclusion, this study has demonstrated that Trps1 is a positive regulator of cell proliferation in both dental mesenchyme and epithelium, suggesting that the microdontia in TRPS is likely due to decreased cell proliferation in developing tooth organs. Furthermore, the reduced mineralization observed in Trps1+/- mice may provide some explanation for the extensive dental caries reported in TRPS patients.
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Affiliation(s)
- Morgan Goss
- Institute of Oral Health Research, School of Dentistry, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Mairobys Socorro
- Center for Craniofacial Regeneration, Dept. of Oral Biology, McGowan Institute for Regenerative Medicine, University of Pittsburgh School of Dental Medicine, Pittsburgh, PA, USA
| | - Daisy Monier
- Center for Craniofacial Regeneration, Dept. of Oral Biology, McGowan Institute for Regenerative Medicine, University of Pittsburgh School of Dental Medicine, Pittsburgh, PA, USA
| | - Kostas Verdelis
- Center for Craniofacial Regeneration, Dept. of Oral Biology, McGowan Institute for Regenerative Medicine, University of Pittsburgh School of Dental Medicine, Pittsburgh, PA, USA
| | - Dobrawa Napierala
- Center for Craniofacial Regeneration, Dept. of Oral Biology, McGowan Institute for Regenerative Medicine, University of Pittsburgh School of Dental Medicine, Pittsburgh, PA, USA.
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14
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Liu Y, Xu S, Lian X, Su Y, Zhong Y, Lv R, Mo K, Zhu H, Xiaojiang W, Xu L, Wang S. Atypical GATA protein TRPS1 plays indispensable roles in mouse two-cell embryo. Cell Cycle 2019; 18:437-451. [PMID: 30712485 DOI: 10.1080/15384101.2019.1577650] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Zygotic genome activation (ZGA) is one of the most critical events at the beginning of mammalian preimplantation embryo development (PED). The mechanisms underlying mouse ZGA remain unclear although it has been widely studied. In the present study, we identified that tricho-rhino-phalangeal syndrome 1 (TRPS1), an atypical GATA family member, is an important factor for ZGA in mouse PED. We found that the Trps1 mRNA level peaked at the one-cell stage while TRPS1 protein did so at the two/four-cell stage. Knockdown of Trps1 by the microinjection of Trps1 siRNA reduced the developmental rate of mouse preimplantation embryos by approximately 30%, and increased the expression of ZGA marker genes MuERV-L and Zscan4d via suppressing the expression of major histone markers H3K4me3 and H3K27me3. Furthermore, Trps1 knockdown decreased the expression of Sox2 but increased Oct4 expression. We conclude that TRPS1 may be indispensable for zygotic genome activation during mouse PED.
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Affiliation(s)
- Yue Liu
- a Key Laboratory of Stem Cell Engineering and Regenerative Medicine , Fujian Province University
| | - Songhua Xu
- b Department of Human Anatomy, Histology and Embryology , Fujian Medical University , Fuzhou , P. R. China
| | - Xiuli Lian
- b Department of Human Anatomy, Histology and Embryology , Fujian Medical University , Fuzhou , P. R. China
| | - Yang Su
- b Department of Human Anatomy, Histology and Embryology , Fujian Medical University , Fuzhou , P. R. China
| | - Yuhuan Zhong
- b Department of Human Anatomy, Histology and Embryology , Fujian Medical University , Fuzhou , P. R. China
| | - Ruimin Lv
- b Department of Human Anatomy, Histology and Embryology , Fujian Medical University , Fuzhou , P. R. China
| | - Kaien Mo
- b Department of Human Anatomy, Histology and Embryology , Fujian Medical University , Fuzhou , P. R. China
| | - Huimin Zhu
- c Fujian Key Laboratory of Medical Bioinformatics, School of Basic Medical Sciences , Fujian Medical University , Fuzhou , P. R. China.,d Key Laboratory of Ministry of Education for Gastrointestinal Cancer, School of Basic Medical Sciences , Fujian Medical University , Fuzhou , P. R. China
| | - Wang Xiaojiang
- b Department of Human Anatomy, Histology and Embryology , Fujian Medical University , Fuzhou , P. R. China
| | - Lixuan Xu
- b Department of Human Anatomy, Histology and Embryology , Fujian Medical University , Fuzhou , P. R. China
| | - Shie Wang
- a Key Laboratory of Stem Cell Engineering and Regenerative Medicine , Fujian Province University.,b Department of Human Anatomy, Histology and Embryology , Fujian Medical University , Fuzhou , P. R. China
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15
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Inhibition of microRNA-138 enhances bone formation in multiple myeloma bone marrow niche. Leukemia 2018; 32:1739-1750. [PMID: 29925904 DOI: 10.1038/s41375-018-0161-6] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2017] [Revised: 02/25/2018] [Accepted: 04/10/2018] [Indexed: 12/21/2022]
Abstract
Myeloma bone disease is a devastating complication of multiple myeloma (MM) and is caused by dysregulation of bone remodeling processes in the bone marrow microenvironment. Previous studies showed that microRNA-138 (miR-138) is a negative regulator of osteogenic differentiation of mesenchymal stromal cells (MSCs) and that inhibiting its function enhances bone formation in vitro. In this study, we explored the role of miR-138 in myeloma bone disease and evaluated the potential of systemically delivered locked nucleic acid (LNA)-modified anti-miR-138 oligonucleotides in suppressing myeloma bone disease. We showed that expression of miR-138 was significantly increased in MSCs from MM patients (MM-MSCs) and myeloma cells compared to those from healthy subjects. Furthermore, inhibition of miR-138 resulted in enhanced osteogenic differentiation of MM-MSCs in vitro and increased the number of endosteal osteoblastic lineage cells (OBCs) and bone formation rate in mouse models of myeloma bone disease. RNA sequencing of the OBCs identified TRPS1 and SULF2 as potential miR-138 targets that were de-repressed in anti-miR-138-treated mice. In summary, these data indicate that inhibition of miR-138 enhances bone formation in MM and that pharmacological inhibition of miR-138 could represent a new therapeutic strategy for treatment of myeloma bone disease.
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16
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Lin X, Peng C, Greenbaum J, Li ZF, Wu KH, Ao ZX, Zhang T, Shen J, Deng HW. Identifying potentially common genes between dyslipidemia and osteoporosis using novel analytical approaches. Mol Genet Genomics 2018; 293:711-723. [PMID: 29327327 PMCID: PMC5949092 DOI: 10.1007/s00438-017-1414-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2017] [Accepted: 12/29/2017] [Indexed: 02/07/2023]
Abstract
Dyslipidemia (DL) is closely related to osteoporosis (OP), while the exact common genetic mechanisms are still largely unknown. We proposed to use novel genetic analysis methods with pleiotropic information to identify potentially novel and/or common genes for the potential shared pathogenesis associated with OP and/or DL. We assessed the pleiotropy between plasma lipid (PL) and femoral neck bone mineral density (FNK BMD). We jointly applied the conditional false discovery rate (cFDR) method and the genetic analysis incorporating pleiotropy and annotation (GPA) method to the summary statistics provided by genome-wide association studies (GWASs) of FNK BMD (n = 49,988) and PL (n = 188,577) to identify potentially novel and/or common genes for BMD/PL. We found strong pleiotropic enrichment between PL and FNK BMD. Two hundred and forty-five PL SNPs were identified as potentially novel SNPs by cFDR and GPA. The corresponding genes were enriched in gene ontology (GO) terms "phospholipid homeostasis" and "chylomicron remnant clearance". Three SNPs (rs2178950, rs9939318, and rs9368716) might be the pleiotropic ones and the corresponding genes NLRC5 (rs2178950) and TRPS1 (rs9939318) were involved in NF-κB signaling pathway and Wnt signaling pathway as well as inflammation and innate immune processes. Our study validated the pleiotropy between PL and FNK BMD, and corroborated the reliability and high-efficiency of cFDR and GPA methods in further analyses of existing GWASs with summary statistics. We identified potentially common and/or novel genes for PL and/or FNK BMD, which may provide new insight and direction for further research.
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Affiliation(s)
- Xu Lin
- Southern Medical University, No.1023, South Shatai Road, Baiyun District, Guangzhou, 510515, Guangdong, People's Republic of China
| | - Cheng Peng
- Department of Geriatrics, National Key Clinical Specialty, Guangzhou First People's Hospital, The Second Affiliated Hospital of South China University of Technology, Guangzhou, 510180, People's Republic of China
| | - Jonathan Greenbaum
- Center for Bioinformatics and Genomics, Department of Global Statistics and Data Science, School of Public Health and Tropical Medicine, Tulane University, New Orleans, LA, 70112, USA
| | - Zhang-Fang Li
- Department of Endocrinology and Metabolism, The Third Affiliated Hospital of Southern Medical University, Guangzhou, 510630, People's Republic of China
| | - Ke-Hao Wu
- Center for Bioinformatics and Genomics, Department of Global Statistics and Data Science, School of Public Health and Tropical Medicine, Tulane University, New Orleans, LA, 70112, USA
| | - Zeng-Xin Ao
- Southern Medical University, No.1023, South Shatai Road, Baiyun District, Guangzhou, 510515, Guangdong, People's Republic of China
| | - Tong Zhang
- Department of Endocrinology and Metabolism, The Third Affiliated Hospital of Southern Medical University, Guangzhou, 510630, People's Republic of China
| | - Jie Shen
- Department of Endocrinology and Metabolism, The Third Affiliated Hospital of Southern Medical University, Guangzhou, 510630, People's Republic of China
| | - Hong-Wen Deng
- Center for Bioinformatics and Genomics, Department of Global Statistics and Data Science, School of Public Health and Tropical Medicine, Tulane University, New Orleans, LA, 70112, USA.
- School of Basic Medical Sciences, Central South University, Changsha, 410000, People's Republic of China.
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17
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Bilotta FL, Arcidiacono B, Messineo S, Greco M, Chiefari E, Britti D, Nakanishi T, Foti DP, Brunetti A. Insulin and osteocalcin: further evidence for a mutual cross-talk. Endocrine 2018; 59:622-632. [PMID: 28866834 PMCID: PMC5847166 DOI: 10.1007/s12020-017-1396-0] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/01/2017] [Accepted: 08/14/2017] [Indexed: 12/26/2022]
Abstract
PURPOSE In the last few years, bone has been recognized as an endocrine organ that modulates glucose metabolism by secretion of osteocalcin, an osteoblast-specific hormone, that influences fat deposition and blood sugar levels. To date, however, very few in vitro models have been developed to investigate, at the molecular levels, the relationship between glucose, insulin and osteocalcin. This study aims at covering this gap. METHODS We studied osteogenic differentiation, osteocalcin gene expression, and osteblast-mediated insulin secretion, using cultured MG-63 human osteoblast-like cells that underwent glucotoxicity and insulin resistance. In addition, we investigated whether a correlation existed between hyperglycemia and/or insulin resistance and total osteocalcin serum concentrations in patients. RESULTS While insulin and low glucose increased osteocalcin gene expression, disruption of insulin signaling in MG-63 osteoblasts and high glucose concentration in cell culture medium decreased osteocalcin gene transcription and reduced osteogenic differentiation. Concomitantly, insulin secretion was significantly impaired in rat INS-1 β-cells treated with conditioned medium from insulin resistant MG-63 cells or cells exposed to high glucose concentrations. Also, chronic hyperglycemia, but not insulin resistance, inversely correlated with circulating osteocalcin levels in patients. CONCLUSION Our results further support the existence of an endocrine axis between bone, where osteocalcin is produced, and pancreatic β-cells, and add new insights into the molecular details of this relationship. These findings may contribute to the understanding of osteocalcin regulation and its role in metabolism.
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Affiliation(s)
- Francesco L Bilotta
- Department of Health Sciences, University "Magna Græcia" of Catanzaro, Viale Europa (Località Germaneto), 88100, Catanzaro, Italy
| | - Biagio Arcidiacono
- Department of Health Sciences, University "Magna Græcia" of Catanzaro, Viale Europa (Località Germaneto), 88100, Catanzaro, Italy
| | - Sebastiano Messineo
- Department of Health Sciences, University "Magna Græcia" of Catanzaro, Viale Europa (Località Germaneto), 88100, Catanzaro, Italy
| | - Marta Greco
- Department of Health Sciences, University "Magna Græcia" of Catanzaro, Viale Europa (Località Germaneto), 88100, Catanzaro, Italy
| | - Eusebio Chiefari
- Department of Health Sciences, University "Magna Græcia" of Catanzaro, Viale Europa (Località Germaneto), 88100, Catanzaro, Italy
| | - Domenico Britti
- Department of Health Sciences, University "Magna Græcia" of Catanzaro, Viale Europa (Località Germaneto), 88100, Catanzaro, Italy
| | - Tomoko Nakanishi
- Laboratory of Molecular Genetics, The Institute of Medical Science, University of Tokyo, 108-8639, Tokyo, Japan
| | - Daniela P Foti
- Department of Health Sciences, University "Magna Græcia" of Catanzaro, Viale Europa (Località Germaneto), 88100, Catanzaro, Italy
| | - Antonio Brunetti
- Department of Health Sciences, University "Magna Græcia" of Catanzaro, Viale Europa (Località Germaneto), 88100, Catanzaro, Italy.
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18
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Hu Y, Tan LJ, Chen XD, Liu Z, Min SS, Zeng Q, Shen H, Deng HW. Identification of Novel Potentially Pleiotropic Variants Associated With Osteoporosis and Obesity Using the cFDR Method. J Clin Endocrinol Metab 2018; 103:125-138. [PMID: 29145611 PMCID: PMC6061219 DOI: 10.1210/jc.2017-01531] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/06/2017] [Accepted: 10/12/2017] [Indexed: 01/10/2023]
Abstract
CONTEXT Genome-wide association studies (GWASs) have been successful in identifying loci associated with osteoporosis and obesity. However, the findings explain only a small fraction of the total genetic variance. OBJECTIVE The aim of this study was to identify novel pleiotropic genes important in osteoporosis and obesity. DESIGN AND SETTING A pleiotropic conditional false discovery rate method was applied to three independent GWAS summary statistics of femoral neck bone mineral density, body mass index, and waist-to-hip ratio. Next, differential expression analysis was performed for the potentially pleiotropic genes, and weighted genes coexpression network analysis (WGCNA) was conducted to identify functional connections between the suggested pleiotropic genes and known osteoporosis/obesity genes using transcriptomic expression data sets in osteoporosis/obesity-related cells. RESULTS We identified seven potentially pleiotropic loci-rs3759579 (MARK3), rs2178950 (TRPS1), rs1473 (PUM1), rs9825174 (XXYLT1), rs2047937 (ZNF423), rs17277372 (DNM3), and rs335170 (PRDM6)-associated with osteoporosis and obesity. Of these loci, the PUM1 gene was differentially expressed in osteoporosis-related cells (B lymphocytes) and obesity-related cells (adipocytes). WGCNA showed that PUM1 positively interacted with several known osteoporosis genes (AKAP11, JAG1, and SPTBN1). ZNF423 was the highly connected intramodular hub gene and interconnected with 21 known osteoporosis-related genes, including JAG1, EN1, and FAM3C. CONCLUSIONS Our study identified seven potentially pleiotropic genes associated with osteoporosis and obesity. The findings may provide new insights into a potential genetic determination and codetermination mechanism of osteoporosis and obesity.
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Affiliation(s)
- Yuan Hu
- Laboratory of Molecular and Statistical Genetics, College of Life Sciences, Hunan Normal University, Changsha, Hunan, China
| | - Li-Jun Tan
- Laboratory of Molecular and Statistical Genetics, College of Life Sciences, Hunan Normal University, Changsha, Hunan, China
| | - Xiang-Ding Chen
- Laboratory of Molecular and Statistical Genetics, College of Life Sciences, Hunan Normal University, Changsha, Hunan, China
| | - Zhen Liu
- Laboratory of Molecular and Statistical Genetics, College of Life Sciences, Hunan Normal University, Changsha, Hunan, China
| | - Shi-Shi Min
- Laboratory of Molecular and Statistical Genetics, College of Life Sciences, Hunan Normal University, Changsha, Hunan, China
| | - Qin Zeng
- Laboratory of Molecular and Statistical Genetics, College of Life Sciences, Hunan Normal University, Changsha, Hunan, China
| | - Hui Shen
- Center for Bioinformatics and Genomics, School of Public Health and Tropical Medicine, Tulane University, New Orleans, Louisiana
| | - Hong-Wen Deng
- Laboratory of Molecular and Statistical Genetics, College of Life Sciences, Hunan Normal University, Changsha, Hunan, China
- Center for Bioinformatics and Genomics, School of Public Health and Tropical Medicine, Tulane University, New Orleans, Louisiana
- Correspondence and Reprint Requests: Hong-Wen Deng, PhD, Department of Global Biostatistics and Data Science, School of Public Health and Tropical Medicine, Tulane University, 1440 Canal Street, Suite 1610, New Orleans, Louisiana 70112. E-mail:
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19
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Bach AS, Derocq D, Laurent-Matha V, Montcourrier P, Sebti S, Orsetti B, Theillet C, Gongora C, Pattingre S, Ibing E, Roger P, Linares LK, Reinheckel T, Meurice G, Kaiser FJ, Gespach C, Liaudet-Coopman E. Nuclear cathepsin D enhances TRPS1 transcriptional repressor function to regulate cell cycle progression and transformation in human breast cancer cells. Oncotarget 2016; 6:28084-103. [PMID: 26183398 PMCID: PMC4695046 DOI: 10.18632/oncotarget.4394] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2015] [Accepted: 06/15/2015] [Indexed: 11/25/2022] Open
Abstract
The lysosomal protease cathepsin D (Cath-D) is overproduced in breast cancer cells (BCC) and supports tumor growth and metastasis formation. Here, we describe the mechanism whereby Cath-D is accumulated in the nucleus of ERα-positive (ER+) BCC. We identified TRPS1 (tricho-rhino-phalangeal-syndrome 1), a repressor of GATA-mediated transcription, and BAT3 (Scythe/BAG6), a nucleo-cytoplasmic shuttling chaperone protein, as new Cath-D-interacting nuclear proteins. Cath-D binds to BAT3 in ER+ BCC and they partially co-localize at the surface of lysosomes and in the nucleus. BAT3 silencing inhibits Cath-D accumulation in the nucleus, indicating that Cath-D nuclear targeting is controlled by BAT3. Fully mature Cath-D also binds to full-length TRPS1 and they co-localize in the nucleus of ER+ BCC where they are associated with chromatin. Using the LexA-VP16 fusion co-activator reporter assay, we then show that Cath-D acts as a transcriptional repressor, independently of its catalytic activity. Moreover, microarray analysis of BCC in which Cath-D and/or TRPS1 expression were silenced indicated that Cath-D enhances TRPS1-mediated repression of several TRPS1-regulated genes implicated in carcinogenesis, including PTHrP, a canonical TRPS1 gene target. In addition, co-silencing of TRPS1 and Cath-D in BCC affects the transcription of cell cycle, proliferation and transformation genes, and impairs cell cycle progression and soft agar colony formation. These findings indicate that Cath-D acts as a nuclear transcriptional cofactor of TRPS1 to regulate ER+ BCC proliferation and transformation in a non-proteolytic manner.
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Affiliation(s)
- Anne-Sophie Bach
- IRCM, Institut de Recherche en Cancérologie de Montpellier, Montpellier, France.,INSERM U1194, Montpellier, France.,Université de Montpellier, Montpellier, France.,Institut Régional du Cancer de Montpellier, Montpellier, France
| | - Danielle Derocq
- IRCM, Institut de Recherche en Cancérologie de Montpellier, Montpellier, France.,INSERM U1194, Montpellier, France.,Université de Montpellier, Montpellier, France.,Institut Régional du Cancer de Montpellier, Montpellier, France
| | - Valérie Laurent-Matha
- IRCM, Institut de Recherche en Cancérologie de Montpellier, Montpellier, France.,INSERM U1194, Montpellier, France.,Université de Montpellier, Montpellier, France.,Institut Régional du Cancer de Montpellier, Montpellier, France
| | - Philippe Montcourrier
- IRCM, Institut de Recherche en Cancérologie de Montpellier, Montpellier, France.,INSERM U1194, Montpellier, France.,Université de Montpellier, Montpellier, France.,Institut Régional du Cancer de Montpellier, Montpellier, France
| | - Salwa Sebti
- IRCM, Institut de Recherche en Cancérologie de Montpellier, Montpellier, France.,INSERM U1194, Montpellier, France.,Université de Montpellier, Montpellier, France.,Institut Régional du Cancer de Montpellier, Montpellier, France
| | - Béatrice Orsetti
- IRCM, Institut de Recherche en Cancérologie de Montpellier, Montpellier, France.,INSERM U1194, Montpellier, France.,Université de Montpellier, Montpellier, France.,Institut Régional du Cancer de Montpellier, Montpellier, France
| | - Charles Theillet
- IRCM, Institut de Recherche en Cancérologie de Montpellier, Montpellier, France.,INSERM U1194, Montpellier, France.,Université de Montpellier, Montpellier, France.,Institut Régional du Cancer de Montpellier, Montpellier, France
| | - Céline Gongora
- IRCM, Institut de Recherche en Cancérologie de Montpellier, Montpellier, France.,INSERM U1194, Montpellier, France.,Université de Montpellier, Montpellier, France.,Institut Régional du Cancer de Montpellier, Montpellier, France
| | - Sophie Pattingre
- IRCM, Institut de Recherche en Cancérologie de Montpellier, Montpellier, France.,INSERM U1194, Montpellier, France.,Université de Montpellier, Montpellier, France.,Institut Régional du Cancer de Montpellier, Montpellier, France
| | - Eva Ibing
- Universität zu Lübeck, Lübeck, Germany
| | - Pascal Roger
- Department of Pathology, CHU Nimes, Nimes, France
| | - Laetitia K Linares
- IRCM, Institut de Recherche en Cancérologie de Montpellier, Montpellier, France.,INSERM U1194, Montpellier, France.,Université de Montpellier, Montpellier, France.,Institut Régional du Cancer de Montpellier, Montpellier, France
| | - Thomas Reinheckel
- Institute of Molecular Medicine and Cell Research, Albert-Ludwigs-University, Freiburg, Germany
| | - Guillaume Meurice
- Functional Genomic Plateform, Institut Gustave Roussy, Villejuif, France
| | | | - Christian Gespach
- INSERM U938, Molecular and Clinical Oncology, Paris 6 University Pierre et Marie Curie, Hôpital Saint-Antoine, Paris, France
| | - Emmanuelle Liaudet-Coopman
- IRCM, Institut de Recherche en Cancérologie de Montpellier, Montpellier, France.,INSERM U1194, Montpellier, France.,Université de Montpellier, Montpellier, France.,Institut Régional du Cancer de Montpellier, Montpellier, France
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20
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Nomir AG, Takeuchi Y, Fujikawa J, El Sharaby AA, Wakisaka S, Abe M. Fate mapping of Trps1 daughter cells during cardiac development using novel Trps1-Cre mice. Genesis 2016; 54:379-88. [PMID: 27257806 DOI: 10.1002/dvg.22951] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2016] [Revised: 05/31/2016] [Accepted: 05/31/2016] [Indexed: 01/12/2023]
Abstract
Tricho-rhino-phalangeal syndrome (TRPS) is a rare congenital disorder that is characterized by abnormal hair growth and skeletal deformities. These result in sparse hair, short stature, and early onset of joint problems. Recent reports have shown that a relatively high proportion of patients with TRPS exhibit a broad range of congenital heart defects. To determine the regulation of Trps1 transcription in vivo, we generated novel transgenic mice, which expressed Cre recombinase under the murine Trps1 proximal promoter sequence (Trps1-Cre). We crossed these mice with Cre reporter mice to identify Trps1 daughter cells. Labeled cells were observed in the appendicular joint tissue, dermal papilla of the hair follicles, cardiac valves, aortic sinus, atrial walls, and the interventricular septum. In situ analysis showed restricted Trps1 expression, which was observed in endocardial cushions of the outflow tract, and in leaflets of all mature cardiac valves. These results suggest that the Trps1 proximal promoter sequence contains some of the tissue-specific Trps1 regulatory region. Further, our findings partially explain why patients with TRPS show a broad range of congenital cardiac defects, although Trps1 expression is observed in a more restricted fashion. genesis 54:379-388, 2016. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Ahmed G Nomir
- Department of Oral Anatomy and Developmental Biology, Osaka University Graduate School of Dentistry, Suita, Osaka, Japan.,Department of Anatomy and Embryology, Faculty of Veterinary Medicine, Damnhour University, Egypt
| | - Yuto Takeuchi
- Department of Oral Anatomy and Developmental Biology, Osaka University Graduate School of Dentistry, Suita, Osaka, Japan.,Department of Orthodontics, Osaka University Graduate School of Dentistry, Suita, Osaka, Japan
| | - Junji Fujikawa
- Department of Oral Anatomy and Developmental Biology, Osaka University Graduate School of Dentistry, Suita, Osaka, Japan
| | - Ashraf A El Sharaby
- Department of Anatomy and Embryology, Faculty of Veterinary Medicine, Damnhour University, Egypt
| | - Satoshi Wakisaka
- Department of Oral Anatomy and Developmental Biology, Osaka University Graduate School of Dentistry, Suita, Osaka, Japan
| | - Makoto Abe
- Department of Oral Anatomy and Developmental Biology, Osaka University Graduate School of Dentistry, Suita, Osaka, Japan
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21
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Adams DJ, Rowe DW, Ackert-Bicknell CL. Genetics of aging bone. Mamm Genome 2016; 27:367-80. [PMID: 27272104 DOI: 10.1007/s00335-016-9650-y] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2016] [Accepted: 05/24/2016] [Indexed: 01/08/2023]
Abstract
With aging, the skeleton experiences a number of changes, which include reductions in mass and changes in matrix composition, leading to fragility and ultimately an increase of fracture risk. A number of aspects of bone physiology are controlled by genetic factors, including peak bone mass, bone shape, and composition; however, forward genetic studies in humans have largely concentrated on clinically available measures such as bone mineral density (BMD). Forward genetic studies in rodents have also heavily focused on BMD; however, investigations of direct measures of bone strength, size, and shape have also been conducted. Overwhelmingly, these studies of the genetics of bone strength have identified loci that modulate strength via influencing bone size, and may not impact the matrix material properties of bone. Many of the rodent forward genetic studies lacked sufficient mapping resolution for candidate gene identification; however, newer studies using genetic mapping populations such as Advanced Intercrosses and the Collaborative Cross appear to have overcome this issue and show promise for future studies. The majority of the genetic mapping studies conducted to date have focused on younger animals and thus an understanding of the genetic control of age-related bone loss represents a key gap in knowledge.
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Affiliation(s)
- Douglas J Adams
- Department of Orthopaedic Surgery, University of Connecticut Musculoskeletal Institute, University of Connecticut Health, Farmington, CT, 06030, USA
| | - David W Rowe
- Center for Regenerative Medicine and Skeletal Development, Department of Reconstructive Sciences, Biomaterials and Skeletal Development, University of Connecticut Health, Farmington, CT, USA
| | - Cheryl L Ackert-Bicknell
- Center for Musculoskeletal Research, Department of Orthopaedics and Rehabilitation, School of Medicine and Dentistry, University of Rochester, 601 Elmwood Ave, Box 665, Rochester, NY, 14624, USA.
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22
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Cain CJ, Gaborit N, Lwin W, Barruet E, Ho S, Bonnard C, Hamamy H, Shboul M, Reversade B, Kayserili H, Bruneau BG, Hsiao EC. Loss of Iroquois homeobox transcription factors 3 and 5 in osteoblasts disrupts cranial mineralization. Bone Rep 2016; 5:86-95. [PMID: 27453922 PMCID: PMC4926823 DOI: 10.1016/j.bonr.2016.02.005] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/25/2016] [Accepted: 02/02/2016] [Indexed: 01/13/2023] Open
Abstract
Cranial malformations are a significant cause of perinatal morbidity and mortality. Iroquois homeobox transcription factors (IRX) are expressed early in bone tissue formation and facilitate patterning and mineralization of the skeleton. Mice lacking Irx5 appear grossly normal, suggesting that redundancy within the Iroquois family. However, global loss of both Irx3 and Irx5 in mice leads to significant skeletal malformations and embryonic lethality from cardiac defects. Here, we study the bone-specific functions of Irx3 and Irx5 using Osx-Cre to drive osteoblast lineage-specific deletion of Irx3 in Irx5(-/-) mice. Although we found that the Osx-Cre transgene alone could also affect craniofacial mineralization, newborn Irx3 (flox/flox) /Irx5(-/-)/Osx-Cre (+) mice displayed additional mineralization defects in parietal, interparietal, and frontal bones with enlarged sutures and reduced calvarial expression of osteogenic genes. Newborn endochondral long bones were largely unaffected, but we observed marked reductions in 3-4-week old bone mineral content of Irx3 (flox/flox) /Irx5(-/-)/Osx-Cre (+) mice. Our findings indicate that IRX3 and IRX5 can work together to regulate mineralization of specific cranial bones. Our results also provide insight into the causes of the skeletal changes and mineralization defects seen in Hamamy syndrome patients carrying mutations in IRX5.
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Affiliation(s)
- Corey J Cain
- Department of Medicine, Division of Endocrinology and Metabolism, Institute for Human Genetics, Program in Craniofacial Biology, University of California, San Francisco, San Francisco, CA 94143-0794, USA
| | - Nathalie Gaborit
- Inserm, UMR 1087, l'institut du thorax, Nantes, France; CNRS, UMR 6291, Nantes, France; Université de Nantes, France
| | - Wint Lwin
- Department of Medicine, Division of Endocrinology and Metabolism, Institute for Human Genetics, Program in Craniofacial Biology, University of California, San Francisco, San Francisco, CA 94143-0794, USA
| | - Emilie Barruet
- Department of Medicine, Division of Endocrinology and Metabolism, Institute for Human Genetics, Program in Craniofacial Biology, University of California, San Francisco, San Francisco, CA 94143-0794, USA
| | - Samantha Ho
- Department of Medicine, Division of Endocrinology and Metabolism, Institute for Human Genetics, Program in Craniofacial Biology, University of California, San Francisco, San Francisco, CA 94143-0794, USA
| | - Carine Bonnard
- Human Embryology and Genetics Laboratory, Institute of Medical Biology, ASTAR, Singapore 138648, Singapore
| | - Hanan Hamamy
- Department of Genetic Medicine and Development, Geneva University, Geneva 1211, Switzerland
| | - Mohammad Shboul
- Human Embryology and Genetics Laboratory, Institute of Medical Biology, ASTAR, Singapore 138648, Singapore
| | - Bruno Reversade
- Human Embryology and Genetics Laboratory, Institute of Medical Biology, ASTAR, Singapore 138648, Singapore
| | - Hülya Kayserili
- Medical Genetics Department, Koc University School of Medicine, Rumelifeneri Yolu, Sarıyer, Istanbul 34450, Turkey; Medical Genetics Department, Istanbul Medical Faculty, Istanbul University Topkapi, Fatih, 34093 lstanbul, Turkey
| | - Benoit G Bruneau
- Gladstone Institute for Cardiovascular Disease, San Francisco, CA 94158, USA; Department of Pediatrics, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Edward C Hsiao
- Department of Medicine, Division of Endocrinology and Metabolism, Institute for Human Genetics, Program in Craniofacial Biology, University of California, San Francisco, San Francisco, CA 94143-0794, USA
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Huang JZ, Chen M, Zeng M, Xu SH, Zou FY, Chen D, Yan GR. Down-regulation of TRPS1 stimulates epithelial-mesenchymal transition and metastasis through repression ofFOXA1. J Pathol 2016; 239:186-96. [PMID: 26969828 DOI: 10.1002/path.4716] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2015] [Revised: 02/02/2016] [Accepted: 02/20/2016] [Indexed: 02/06/2023]
Affiliation(s)
- Jin-Zhou Huang
- Institutes of Life and Health Engineering, Jinan University; and Biomedicine Research Centre; Third Affiliated Hospital of Guangzhou Medical University; People's Republic of China
| | - Min Chen
- Institutes of Life and Health Engineering, Jinan University; and Biomedicine Research Centre; Third Affiliated Hospital of Guangzhou Medical University; People's Republic of China
| | - Ming Zeng
- Institutes of Life and Health Engineering, Jinan University; and Biomedicine Research Centre; Third Affiliated Hospital of Guangzhou Medical University; People's Republic of China
| | - Song-Hui Xu
- Institutes of Life and Health Engineering, Jinan University; and Biomedicine Research Centre; Third Affiliated Hospital of Guangzhou Medical University; People's Republic of China
| | - Fei-Yan Zou
- Institutes of Life and Health Engineering, Jinan University; and Biomedicine Research Centre; Third Affiliated Hospital of Guangzhou Medical University; People's Republic of China
| | - De Chen
- Biomedicine Research Centre and Department of Surgery; Third Affiliated Hospital of Guangzhou Medical University; People's Republic of China
- Key Laboratory for Major Obstetric Diseases of Guangdong Province; Key Laboratory of Reproduction and Genetics of Guangdong Higher Education Institutes; Guangzhou People's Republic of China
| | - Guang-Rong Yan
- Institutes of Life and Health Engineering, Jinan University; and Biomedicine Research Centre; Third Affiliated Hospital of Guangzhou Medical University; People's Republic of China
- Biomedicine Research Centre and Department of Surgery; Third Affiliated Hospital of Guangzhou Medical University; People's Republic of China
- Key Laboratory for Major Obstetric Diseases of Guangdong Province; Key Laboratory of Reproduction and Genetics of Guangdong Higher Education Institutes; Guangzhou People's Republic of China
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24
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Wu L, Wang Y, Liu Y, Yu S, Xie H, Shi X, Qin S, Ma F, Tan TZ, Thiery JP, Chen L. A central role for TRPS1 in the control of cell cycle and cancer development. Oncotarget 2015; 5:7677-90. [PMID: 25277197 PMCID: PMC4202153 DOI: 10.18632/oncotarget.2291] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
The eukaryotic cell cycle is controlled by a complex regulatory network, which is still poorly understood. Here we demonstrate that TRPS1, an atypical GATA factor, modulates cell proliferation and controls cell cycle progression. Silencing TRPS1 had a differential effect on the expression of nine key cell cycle-related genes. Eight of these genes are known to be involved in the regulation of the G2 phase and the G2/M transition of the cell cycle. Using cell synchronization studies, we confirmed that TRPS1 plays an important role in the control of cells in these phases of the cell cycle. We also show that silencing TRPS1 controls the expression of 53BP1, but not TP53. TRPS1 silencing also decreases the expression of two histone deacetylases, HDAC2 and HDAC4, as well as the overall HDAC activity in the cells, and leads to the subsequent increase in the acetylation of histone4 K16 but not of histone3 K9 or K18. Finally, we demonstrate that TRPS1 expression is elevated in luminal breast cancer cells and luminal breast cancer tissues as compared with other breast cancer subtypes. Overall, our study proposes that TRPS1 acts as a central hub in the control of cell cycle and proliferation during cancer development.
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Affiliation(s)
- Lele Wu
- The Key Laboratory of Developmental Genes and Human Disease, Ministry of Education, Institute of Life Science, Southeast University, Nanjing, PR China. Contributed equally to this work
| | - Yuzhi Wang
- The Key Laboratory of Developmental Genes and Human Disease, Ministry of Education, Institute of Life Science, Southeast University, Nanjing, PR China. Contributed equally to this work
| | - Yan Liu
- The Key Laboratory of Developmental Genes and Human Disease, Ministry of Education, Institute of Life Science, Southeast University, Nanjing, PR China
| | - Shiyi Yu
- The Key Laboratory of Developmental Genes and Human Disease, Ministry of Education, Institute of Life Science, Southeast University, Nanjing, PR China
| | - Hao Xie
- The Key Laboratory of Developmental Genes and Human Disease, Ministry of Education, Institute of Life Science, Southeast University, Nanjing, PR China
| | - Xingjuan Shi
- The Key Laboratory of Developmental Genes and Human Disease, Ministry of Education, Institute of Life Science, Southeast University, Nanjing, PR China
| | - Sheng Qin
- Laboratory for Comparative Genomics and Bioinformatics and Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Science, Nanjing Normal University, Nanjing, China
| | - Fei Ma
- Laboratory for Comparative Genomics and Bioinformatics and Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Science, Nanjing Normal University, Nanjing, China
| | - Tuan Zea Tan
- Cancer Science Institute, National University of Singapore, 14 Medical Drive, Singapore
| | - Jean Paul Thiery
- Cancer Science Institute, National University of Singapore, 14 Medical Drive, Singapore. Institute of Molecular and Cell Biology, A*STAR, 61 Biopolis Drive, Singapore. Department of Biochemistry, Yong Loo Lin School of Medicine, National University of Singapore, 8 Medical Drive, Singapore
| | - Liming Chen
- The Key Laboratory of Developmental Genes and Human Disease, Ministry of Education, Institute of Life Science, Southeast University, Nanjing, PR China
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25
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Phenotype and genotype in 103 patients with tricho-rhino-phalangeal syndrome. Eur J Med Genet 2015; 58:279-92. [DOI: 10.1016/j.ejmg.2015.03.002] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2015] [Accepted: 03/08/2015] [Indexed: 11/21/2022]
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26
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Kuzynski M, Goss M, Bottini M, Yadav MC, Mobley C, Winters T, Poliard A, Kellermann O, Lee B, Millan JL, Napierala D. Dual role of the Trps1 transcription factor in dentin mineralization. J Biol Chem 2014; 289:27481-93. [PMID: 25128529 DOI: 10.1074/jbc.m114.550129] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
TRPS1 (tricho-rhino-phalangeal syndrome) is a unique GATA-type transcription factor that acts as a transcriptional repressor. TRPS1 deficiency and dysregulated TRPS1 expression result in skeletal and dental abnormalities implicating TRPS1 in endochondral bone formation and tooth development. Moreover, patients with tricho-rhino-phalangeal syndrome frequently present with low bone mass indicating TRPS1 involvement in bone homeostasis. In addition, our previous data demonstrated accelerated mineralization of the perichondrium in Trps1 mutant mice and impaired dentin mineralization in Col1a1-Trps1 transgenic mice, implicating Trps1 in the mineralization process. To understand the role of Trps1 in the differentiation and function of cells producing mineralized matrix, we used a preodontoblastic cell line as a model of dentin mineralization. We generated both Trps1-deficient and Trps1-overexpressing stable cell lines and analyzed the progression of mineralization by alkaline phosphatase and alizarin red staining. As predicted, based on our previous in vivo data, delayed and decreased mineralization of Trps1-overexpressing odontoblastic cells was observed when compared with control cells. This was associated with down-regulation of genes regulating phosphate homeostasis. Interestingly, Trps1-deficient cells lost the ability to mineralize and demonstrated decreased expression of several genes critical for initiating the mineralization process, including Alpl and Phospho1. Based on these data, we have concluded that Trps1 serves two critical and context-dependent functions in odontoblast-regulated mineralization as follows: 1) Trps1 is required for odontoblast maturation by supporting expression of genes crucial for initiating the mineralization process, and 2) Trps1 represses the function of mature cells and, consequently, restricts the extent of extracellular matrix mineralization.
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Affiliation(s)
- Maria Kuzynski
- From the Institute of Oral Health Research, Department of Oral and Maxillofacial Surgery, School of Dentistry, University of Alabama at Birmingham, Birmingham, Alabama 35294
| | - Morgan Goss
- From the Institute of Oral Health Research, Department of Oral and Maxillofacial Surgery, School of Dentistry, University of Alabama at Birmingham, Birmingham, Alabama 35294
| | - Massimo Bottini
- the Sanford Children's Health Research Center, Sanford-Burnham Medical Research Institute, La Jolla, California 92037, the Department of Experimental Medicine and Surgery, University of Rome Tor Vergata, 00133Rome, Italy
| | - Manisha C Yadav
- the Sanford Children's Health Research Center, Sanford-Burnham Medical Research Institute, La Jolla, California 92037
| | - Callie Mobley
- From the Institute of Oral Health Research, Department of Oral and Maxillofacial Surgery, School of Dentistry, University of Alabama at Birmingham, Birmingham, Alabama 35294
| | - Tony Winters
- From the Institute of Oral Health Research, Department of Oral and Maxillofacial Surgery, School of Dentistry, University of Alabama at Birmingham, Birmingham, Alabama 35294
| | - Anne Poliard
- the EA2496 UFR d'Odontologie, Université Paris Descartes, 92120 Montrouge, France
| | - Odile Kellermann
- INSERM UMR-S 1124, Université René Descartes Paris 5, Centre Universitaire des Saints-Pères, 75270 Paris Cedex 06, France
| | - Brendan Lee
- the Department of Molecular and Human Genetics, Baylor College of Medicine, and the Howard Hughes Medical Institute, Houston, Texas 77030
| | - Jose Luis Millan
- the Sanford Children's Health Research Center, Sanford-Burnham Medical Research Institute, La Jolla, California 92037
| | - Dobrawa Napierala
- From the Institute of Oral Health Research, Department of Oral and Maxillofacial Surgery, School of Dentistry, University of Alabama at Birmingham, Birmingham, Alabama 35294,
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27
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Su P, Hu J, Zhang H, Jia M, Li W, Jing X, Zhou G. Association of TRPS1 gene with different EMT markers in ERα-positive and ERα-negative breast cancer. Diagn Pathol 2014; 9:119. [PMID: 24934762 PMCID: PMC4069092 DOI: 10.1186/1746-1596-9-119] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2014] [Accepted: 06/02/2014] [Indexed: 11/16/2022] Open
Abstract
Background Breast cancer is a heterogeneous disease consisting of different subtypes. Trichorhinophalangeal syndrome type 1 (TRPS1) gene, a GATA-type transcription factor, has been found to be highly expressed in breast cancer. Epithelial-to-mesenchymal transition (EMT) is known to play an important role in tumour invasion and metastasis. Our objective was to elucidate the different roles and clinical relevance of TRPS1 in different estrogen receptor (ER) expression subtypes of breast cancer. Methods An immunohistochemical study was performed. The correlation between clinicopathological features and other biomarker profiles were analysed statistically. Result TRPS1 expression was correlated with the patients’ age (P = 0.017). It was positively related with ERα (P < 0.001), progesterone receptor (PR) (P < 0.001) and ERβ (P = 0.001) status, but negatively associated with Ki67 (P = 0.002) and HER2 (P = 0.025) status. In ERα-positive breast cancer, TRPS1 expression was positively associated with the expression of E-cadherin (P < 0.001), β-catenin(P = 0.001), ERβ (P = 0.03), and p53 (P = 0.002) status, while in ERα-negative breast cancer, TRPS1 expression was correlated with slug (P = 0.004), vimentin (P = 0.003), smooth muscle actin (SMA) (P = 0.031), and IMP3 (P = 0.005) expression. Conclusions Based on our findings, we conclude that TRPS1 is positively associated with E-cadherin and β-catenin status in ERα-positive breast cancer cells, while it is also significantly associated with mesenchymal markers of EMT in ERα-negative breast cancer cells. TRPS1 can be a prognostic marker depending on the type of breast cancer. Virtual Slides The virtual slide(s) for this article can be found here: http://www.diagnosticpathology.diagnomx.eu/vs/8686515681264281
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Affiliation(s)
| | | | | | | | | | | | - Gengyin Zhou
- Department of Pathology, Shandong University School of Medicine, 44#, Wenhua Xi Road, 250012 Jinan, Shandong, P,R, China.
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28
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Trps1 is associated with the multidrug resistance of osteosarcoma by regulating MDR1 gene expression. FEBS Lett 2014; 588:801-10. [PMID: 24491996 DOI: 10.1016/j.febslet.2014.01.041] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2013] [Revised: 01/07/2014] [Accepted: 01/19/2014] [Indexed: 11/17/2022]
Abstract
Multidrug resistance (MDR) is a significant clinical problem in the chemotherapy of osteosarcoma and has been linked to the cellular expression of several multidrug-efflux transporters such as MDR1/P-gp. Our inhibition of the transcription factor Trps1 led to repression of MDR1/P-gp while its overexpression resulted in upregulation of MDR1/P-gp. Flow cytometric analysis suggested Trps1 increased the release of several anti-cancer drugs, thus decreasing their accumulation. Immunohistochemical analysis of clinical samples indicated that the expression of Trps1 directly correlated with MDR1/P-gp. Trps1 inhibited TGFbeta-1 and directly bound to the MDR1 promoter. Our data demonstrate a role for Trps1 in the regulation of MDR1 expression in osteosarcoma.
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29
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Mekala NK, Baadhe RR, Parcha SR. Molecular level characterization of L-ascorbic acid induced osteoblasts from umbilical cord blood source. Tissue Eng Regen Med 2013. [DOI: 10.1007/s13770-013-0003-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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30
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Brandt M, Szewczuk LM, Zhang H, Hong X, McCormick PM, Lewis TS, Graham TI, Hung ST, Harper-Jones AD, Kerrigan JJ, Wang DY, Dul E, Hou W, Ho TF, Meek TD, Cheung MH, Johanson KO, Jones CS, Schwartz B, Kumar S, Oliff AI, Kirkpatrick RB. Development of a High-Throughput Screen to Detect Inhibitors of TRPS1 Sumoylation. Assay Drug Dev Technol 2013; 11:308-25. [DOI: 10.1089/adt.2012.501] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Affiliation(s)
- Martin Brandt
- Molecular Discovery Research, GlaxoSmithKline, Collegeville, Pennsylvania
| | | | - Hong Zhang
- Molecular Discovery Research, GlaxoSmithKline, Collegeville, Pennsylvania
| | - Xuan Hong
- Molecular Discovery Research, GlaxoSmithKline, Collegeville, Pennsylvania
| | | | - Tia S. Lewis
- Molecular Discovery Research, GlaxoSmithKline, Collegeville, Pennsylvania
| | - Taylor I. Graham
- Molecular Discovery Research, GlaxoSmithKline, Collegeville, Pennsylvania
| | - Sunny T. Hung
- Molecular Discovery Research, GlaxoSmithKline, Collegeville, Pennsylvania
| | | | - John J. Kerrigan
- Molecular Discovery Research, GlaxoSmithKline, Collegeville, Pennsylvania
| | - Da-Yuan Wang
- Molecular Discovery Research, GlaxoSmithKline, Collegeville, Pennsylvania
| | - Edward Dul
- Molecular Discovery Research, GlaxoSmithKline, Collegeville, Pennsylvania
| | - Wangfang Hou
- Molecular Discovery Research, GlaxoSmithKline, Collegeville, Pennsylvania
| | - Thau F. Ho
- Molecular Discovery Research, GlaxoSmithKline, Collegeville, Pennsylvania
| | - Thomas D. Meek
- Molecular Discovery Research, GlaxoSmithKline, Collegeville, Pennsylvania
| | - Mui H. Cheung
- Molecular Discovery Research, GlaxoSmithKline, Collegeville, Pennsylvania
| | - Kyung O. Johanson
- Molecular Discovery Research, GlaxoSmithKline, Collegeville, Pennsylvania
| | | | - Benjamin Schwartz
- Molecular Discovery Research, GlaxoSmithKline, Collegeville, Pennsylvania
| | - Sanjay Kumar
- Molecular Discovery Research, GlaxoSmithKline, Collegeville, Pennsylvania
| | - Allen I. Oliff
- Molecular Discovery Research, GlaxoSmithKline, Collegeville, Pennsylvania
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31
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Chen JQ, Bao Y, Lee J, Murray JL, Litton JK, Xiao L, Zhou R, Wu Y, Shen XY, Zhang H, Sahin AA, Katz RL, Bondy ML, Berinstein NL, Hortobagyi GN, Radvanyi LG. Prognostic value of the trichorhinophalangeal syndrome-1 (TRPS-1), a GATA family transcription factor, in early-stage breast cancer. Ann Oncol 2013; 24:2534-2542. [PMID: 23729783 DOI: 10.1093/annonc/mdt190] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
BACKGROUND TRPS-1 is a new GATA transcription factor that is differentially expressed in breast cancer (BC) where it been found recently to regulate epithelial-to-mesenchymal transition (EMT). PATIENTS AND METHODS We carried out a quantitative immunohistochemistry (qIHC) analysis of TRPS-1 expression in 341 primary-stage I-III BC samples in relation to patient clinical characteristics as well as its prognostic value, especially in an estrogen receptor-positive (ER+) subgroup. RESULTS Higher TRPS-1 expression was significantly associated with a number of clinical and pathological characteristics as well as with improved overall survival (OS) and disease-free survival (DFS). Among stage I/II ER+ BC patients who received endocrine therapy alone, those with high TRPS-1 expression had significantly longer OS and DFS. There was also a strong association between TRPS-1 levels and the EMT marker E-cadherin in the ER+ invasive ductal carcinoma cases. Analysis of gene expression data on a panel of BC lines found that TRPS-1 expression was low or absent in BC lines having enriched mesenchymal features. CONCLUSIONS Our data indicated that TRPS-1 is an independent prognostic marker in early-stage BC and a new EMT marker that can distinguish patients with ER+ BC who will respond longer to adjuvant endocrine therapy.
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Affiliation(s)
- J Q Chen
- Departments of Breast Medical Oncology; Melanoma Medical Oncology
| | - Y Bao
- Departments of Breast Medical Oncology; Melanoma Medical Oncology
| | | | | | | | - L Xiao
- Pathology, UT MD Anderson Cancer Center, Houston, USA; Department of Pathology, Shanghai Huadong Hospital, Shanghai, China
| | - R Zhou
- Dan L. Duncan Cancer Center, Baylor College of Medicine, Houston
| | - Y Wu
- Pathology, UT MD Anderson Cancer Center, Houston, USA
| | - X Y Shen
- Department of Pathology, Veterans Administration Hospital, Baylor College of Medicine, Houston, USA
| | - H Zhang
- Pathology, UT MD Anderson Cancer Center, Houston, USA
| | - A A Sahin
- Pathology, UT MD Anderson Cancer Center, Houston, USA
| | - R L Katz
- Pathology, UT MD Anderson Cancer Center, Houston, USA
| | - M L Bondy
- Dan L. Duncan Cancer Center, Baylor College of Medicine, Houston
| | | | | | - L G Radvanyi
- Departments of Breast Medical Oncology; Melanoma Medical Oncology.
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32
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Napierala D, Sun Y, Maciejewska I, Bertin TK, Dawson B, D'Souza R, Qin C, Lee B. Transcriptional repression of the Dspp gene leads to dentinogenesis imperfecta phenotype in Col1a1-Trps1 transgenic mice. J Bone Miner Res 2012; 27:1735-45. [PMID: 22508542 PMCID: PMC3399940 DOI: 10.1002/jbmr.1636] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Dentinogenesis imperfecta (DGI) is a hereditary defect of dentin, a calcified tissue that is the most abundant component of teeth. Most commonly, DGI is manifested as a part of osteogenesis imperfecta (OI) or the phenotype is restricted to dental findings only. In the latter case, DGI is caused by mutations in the DSPP gene, which codes for dentin sialoprotein (DSP) and dentin phosphoprotein (DPP). Although these two proteins together constitute the majority of noncollagenous proteins of the dentin, little is known about their transcriptional regulation. Here we demonstrate that mice overexpressing the Trps1 transcription factor (Col1a1-Trps1 mice) in dentin-producing cells, odontoblasts, present with severe defects of dentin formation that resemble DGI. Combined micro-computed tomography (µCT) and histological analyses revealed tooth fragility due to severe hypomineralization of dentin and a diminished dentin layer with irregular mineralization in Col1a1-Trps1 mice. Biochemical analyses of noncollagenous dentin matrix proteins demonstrated decreased levels of both DSP and DPP proteins in Col1a1-Trps1 mice. On the molecular level, we demonstrated that sustained high levels of Trps1 in odontoblasts lead to dramatic decrease of Dspp expression as a result of direct inhibition of the Dspp promoter by Trps1. During tooth development Trps1 is highly expressed in preodontoblasts, but in mature odontoblasts secreting matrix its expression significantly decreases, which suggests a Trps1 role in odontoblast development. In these studies we identified Trps1 as a potent inhibitor of Dspp expression and the subsequent mineralization of dentin. Thus, we provide novel insights into mechanisms of transcriptional dysregulation that leads to DGI.
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Affiliation(s)
- Dobrawa Napierala
- Institute of Oral Health Research, Department of Oral and Maxillofacial Surgery, School of Dentistry, University of Alabama at Birmingham, Birmingham, AL 35294-0007, USA.
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Ackert-Bicknell CL, Demissie S, Tsaih SW, Beamer WG, Cupples LA, Paigen BJ, Hsu YH, Kiel DP, Karasik D. Genetic variation in TRPS1 may regulate hip geometry as well as bone mineral density. Bone 2012; 50:1188-95. [PMID: 22306695 PMCID: PMC3322322 DOI: 10.1016/j.bone.2012.01.011] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/12/2011] [Revised: 12/26/2011] [Accepted: 01/17/2012] [Indexed: 10/14/2022]
Abstract
Trps1 has been proposed as a candidate gene for a mouse bone mineral density (BMD) QTL on Chromosome (Chr) 15, but it remained unclear if this gene was associated with BMD in humans. We used newly available data and advanced bioinformatics techniques to confirm that Trps1 is the most likely candidate gene for the mouse QTL. In short, by combining the raw genetic mapping data from two F2 generation crosses of inbred strains of mice, we narrowed the 95% confidence interval of this QTL down to the Chr 15 region spanning from 6 to 24cM. This region contains 131 annotated genes. Using block haplotyping, all other genes except Trps1 were eliminated as candidates for this QTL. We then examined associations of 208 SNPs within 10kb of TRPS1 with BMD and hip geometry, using human genome-wide association study (GWAS) data from the GEFOS consortium. After correction for multiple testing, six TRPS1 SNPs were significantly associated with femoral neck BMD (P=0.0015-0.0019; adjusted P=0.038-0.048). We also found that three SNPs were highly associated with femoral neck width in women (rs10505257, P=8.6×10(-5), adjusted P=2.15×10(-3); rs7002384, P=5.5×10(-4), adjusted P=01.38×10(-2)). In conclusion, we demonstrated that combining association studies in humans with murine models provides an efficient strategy to identify new candidate genes for bone phenotypes.
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Affiliation(s)
| | - Serkalem Demissie
- Biostatistics, Boston University School of Public Health, Boston, MA, USA, 02118
| | | | | | - L. Adrienne Cupples
- Biostatistics, Boston University School of Public Health, Boston, MA, USA, 02118
| | | | - Yi-Hsiang Hsu
- Hebrew SeniorLife and Harvard Medical School, Boston, MA, USA, 02131
| | - Douglas P. Kiel
- Hebrew SeniorLife and Harvard Medical School, Boston, MA, USA, 02131
| | - David Karasik
- Hebrew SeniorLife and Harvard Medical School, Boston, MA, USA, 02131
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Zhang Y, Xie RL, Gordon J, LeBlanc K, Stein JL, Lian JB, van Wijnen AJ, Stein GS. Control of mesenchymal lineage progression by microRNAs targeting skeletal gene regulators Trps1 and Runx2. J Biol Chem 2012; 287:21926-35. [PMID: 22544738 DOI: 10.1074/jbc.m112.340398] [Citation(s) in RCA: 91] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Multiple microRNAs (miRNAs) that target the osteogenic Runt-related transcription factor 2 (RUNX2) define an interrelated network of miRNAs that control osteoblastogenesis. We addressed whether these miRNAs have functional targets beyond RUNX2 that coregulate skeletal development. Here, we find that seven RUNX2-targeting miRNAs (miR-23a, miR-30c, miR-34c, miR-133a, miR-135a, miR-205, and miR-217) also regulate the chondrogenic GATA transcription factor tricho-rhino-phalangeal syndrome I (TRPS1). Although the efficacy of each miRNA to target RUNX2 or TRPS1 differs in osteoblasts and chondrocytes, each effectively blocks maturation of precommitted osteoblasts and chondrocytes. Furthermore, these miRNAs can redirect mesenchymal stem cells into adipogenic cell fate with concomitant up-regulation of key lineage-specific transcription factors. Thus, a program of multiple miRNAs controls mesenchymal lineage progression by selectively blocking differentiation of osteoblasts and chondrocytes to control skeletal development.
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Affiliation(s)
- Ying Zhang
- Department of Cell Biology and Cancer Center, University of Massachusetts Medical School, Worcester, Massachusetts 01655, USA
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Michikami I, Fukushi T, Honma S, Yoshioka S, Itoh S, Muragaki Y, Kurisu K, Ooshima T, Wakisaka S, Abe M. Trps1 is necessary for normal temporomandibular joint development. Cell Tissue Res 2012; 348:131-40. [PMID: 22427063 DOI: 10.1007/s00441-012-1372-1] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2011] [Accepted: 02/14/2012] [Indexed: 11/29/2022]
Abstract
Mutation of the human TRPS1 gene leads to trichorhinophalangeal syndrome (TRPS), which is characterized by an abnormal development of various organs including the craniofacial skeleton. Trps1 has recently been shown to be expressed in the jaw joints of zebrafish; however, whether Trps1 is expressed in the mammalian temporomandibular joint (TMJ), or whether it is necessary for TMJ development is unknown. We have analyzed (1) the expression pattern of Trps1 during TMJ development in mice and (2) TMJ development in Trps1 knockout animals. Trps1 is expressed in the maxillo-mandibular junction at embryonic day (E) 11.5. At E15.5, expression is restricted to the developing condylar cartilage and to the surrounding joint disc progenitor cells. In Trps1 knockout mice, the glenoid fossa of the temporal bone forms relatively normally but the condylar process is extremely small and the joint disc and cavities do not develop. The initiation of condyle formation is slightly delayed in the mutants at E14.5; however, at E18.5, the flattened chondrocyte layer is narrowed and most of the condylar chondrocytes exhibit precocious chondrocyte maturation. Expression of Runx2 and its target genes is expanded toward the condylar apex in the mutants. These observations underscore the indispensable role played by Trps1 in normal TMJ development in supporting the differentiation of disc and synoviocyte progenitor cells and in coordinating condylar chondrocyte differentiation.
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Affiliation(s)
- Ikumi Michikami
- Department of Oral Anatomy and Developmental Biology, Osaka University Graduate School of Dentistry, Suita, Osaka, Japan
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Fantauzzo KA, Christiano AM. Trps1 activates a network of secreted Wnt inhibitors and transcription factors crucial to vibrissa follicle morphogenesis. Development 2011; 139:203-14. [PMID: 22115758 DOI: 10.1242/dev.069971] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Mutations in TRPS1 cause trichorhinophalangeal syndrome types I and III, which are characterized by sparse scalp hair in addition to craniofacial and skeletal abnormalities. Trps1 is a vertebrate transcription factor that contains nine zinc-finger domains, including a GATA-type zinc finger through which it binds DNA. Mice in which the GATA domain of Trps1 has been deleted (Trps1(Δgt/Δgt)) have a reduced number of pelage follicles and lack vibrissae follicles postnatally. To identify the transcriptional targets of Trps1 in the developing vibrissa follicle, we performed microarray hybridization analysis, comparing expression patterns in the whisker pads of wild-type versus Trps1(Δgt/Δgt) embryos. We identified a number of transcription factors and Wnt inhibitors among transcripts downregulated in the mutant embryos and several extracellular matrix proteins that were upregulated in the mutant samples, and demonstrated that target gene expression levels were altered in vivo in Trps1(Δgt/Δgt) vibrissae. Unexpectedly, we discovered that Trps1 can directly bind the promoters of its target genes to activate transcription, expanding upon its established role as a transcriptional repressor. Our findings identify Trps1 as a novel regulator of the Wnt signaling pathway and of early hair follicle progenitors in the developing vibrissa follicle.
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Abstract
GATA transcription factor family members have been found to play a critical role in the differentiation of many tissue types. For example, GATA-3 has been found to be highly correlated with estrogen receptor α (ER) expression and is emerging as one of the "master regulators" in breast ductal epithelial cell differentiation. Recently, we discovered another GATA family member highly prevalent in breast cancer called the trichorhinophalangeal syndrome-1 gene (TRPS-1). Using a quantitative immunohistochemistry (qIHC) approach, we found that TRPS-1 was significantly correlated with ER, PR, GATA-3, as well as HER2 expression. However, TRPS-1 was also found to be expressed in a high proportion of ER(-) ductal epithelial breast cancers (BCs), indicating that it may act as a ductal epithelial cell-specific transcription factor regulating cell fate at some point in the epithelial cell differentiation pathway. In keeping with this hypothesis, we found that TRPS-1 protein expression in BC above a certain threshold using qIHC correlated with markedly improved overall survival. Cox proportional hazards analysis found that both TRPS-1 and ER expression above critical threshold equally predicted for improved survival. Thus, TRPS-1 may be a powerful new positive prognostic marker in BC, and further IHC studies, as well as examination of its molecular function in ductal epithelial cell differentiation in the breast, are warranted. In this regard, data on the role of TRPS-1 in the differentiation of cells from mesenchymal precursors in other tissues, such as kidney metanephric mesenchymal cells, columnar chondrocytes, and osteoblasts, in mouse models may be useful. Indeed, these studies have found that TRPS-1 is a critical regulator of mesenchymal-to-epithelial cell transition. In the mammary gland, the restricted expression of TRPS-1 in human, mouse, and rat ductal epithelial cells suggests that it may also play a similar role during ductal luminal progenitor/stem cell differentiation. We present a model of TRPS-1 action in which it may act upstream of GATA-3 and ER on an earlier ductal epithelial progenitor cell or mammary stem cell during mammary gland development and also helps prevent reversion of ER(+) BC cells back into mesenchymal-like cells. This model predicts that BCs with low or no TRPS-1 expression may inherently be much less differentiated and more aggressive tumors with less favorable prognosis.
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Stinson S, Lackner MR, Adai AT, Yu N, Kim HJ, O'Brien C, Spoerke J, Jhunjhunwala S, Boyd Z, Januario T, Newman RJ, Yue P, Bourgon R, Modrusan Z, Stern HM, Warming S, de Sauvage FJ, Amler L, Yeh RF, Dornan D. miR-221/222 targeting of trichorhinophalangeal 1 (TRPS1) promotes epithelial-to-mesenchymal transition in breast cancer. Sci Signal 2011; 4:pt5. [PMID: 21868360 DOI: 10.1126/scisignal.2002258] [Citation(s) in RCA: 78] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Compared with the luminal subtype, the basal-like subtype of breast cancer has an aggressive clinical behavior, but the reasons for this difference between the two subtypes are poorly understood. We identified microRNAs (miRNAs) miR-221 and miR-222 (miR-221/222) as basal-like subtype-specific miRNAs that decrease expression of epithelial-specific genes and increase expression of mesenchymal-specific genes. In addition, expression of these miRNAs increased cell migration and invasion, which collectively are characteristics of the epithelial-to-mesenchymal transition (EMT). The basal-like transcription factor FOSL1 (also known as Fra-1) directly stimulated the transcription of miR-221/222, and the abundance of these miRNAs decreased with inhibition of MEK (mitogen-activated or extracellular signal-regulated protein kinase kinase), placing miR-221/222 downstream of the RAS pathway. The miR-221/222-mediated reduction in E-cadherin abundance depended on their targeting of the 3' untranslated region (3'UTR) of TRPS1 (trichorhinophalangeal syndrome type 1), which is a member of the GATA family of transcriptional repressors. TRPS1 inhibited EMT by directly repressing expression of ZEB2 (Zinc finger E-box-binding homeobox 2). Therefore, miR-221/222 may contribute to the aggressive clinical behavior of basal-like breast cancers.
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Affiliation(s)
- Susanna Stinson
- Department of Molecular Diagnostics and Cancer Cell Biology, Genentech, Inc., South San Francisco, CA, USA
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Molecular Validation of PACE4 as a Target in Prostate Cancer. Transl Oncol 2011; 4:157-72. [PMID: 21633671 DOI: 10.1593/tlo.10295] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2010] [Revised: 02/02/2011] [Accepted: 02/14/2011] [Indexed: 12/31/2022] Open
Abstract
Prostate cancer remains the single most prevalent cancer in men. Standard therapies are still limited and include androgen ablation that initially causes tumor regression. However, tumor cells eventually relapse and develop into a hormone-refractory prostate cancer. One of the current challenges in this disease is to define new therapeutic targets, which have been virtually unchanged in the past 30 years. Recent studies have suggested that the family of enzymes known as the proprotein convertases (PCs) is involved in various types of cancers and their progression. The present study examined PC expression in prostate cancer and validates one PC, namely PACE4, as a target. The evidence includes the observed high expression of PACE4 in all different clinical stages of human prostate tumor tissues. Gene silencing studies targeting PACE4 in the DU145 prostate cancer cell line produced cells (cell line 4-2) with slower proliferation rates, reduced clonogenic activity, and inability to grow as xenografts in nude mice. Gene expression and proteomic profiling of the 4-2 cell line reveals an increased expression of known cancer-related genes (e.g., GJA1, CD44, IGFBP6) that are downregulated in prostate cancer. Similarly, cancer genes whose expression is decreased in the 4-2 cell line were upregulated in prostate cancer (e.g., MUC1, IL6). The direct role of PACE4 in prostate cancer is most likely through the upregulated processing of growth factors or through the aberrant processing of growth factors leading to sustained cancer progression, suggesting that PACE4 holds a central role in prostate cancer.
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Aberrant expression of the P2 promoter-specific transcript Runx1 in epiphyseal cartilage of Trps1-null mice. Exp Mol Pathol 2010; 90:143-8. [PMID: 21122804 DOI: 10.1016/j.yexmp.2010.11.010] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2010] [Revised: 11/22/2010] [Accepted: 11/22/2010] [Indexed: 12/20/2022]
Abstract
Tricho-rhino-phalangeal syndrome (TRPS) is an autosomal dominant skeletal disorder caused by mutations of the Trps1 gene, which encodes a GATA type transcriptional repressor. To investigate the genes that act downstream of Trps1, we performed a DNA array using ATDC5 cells. One of the target genes identified from the DNA array was Runx1, which is essential for hematopoiesis and like Runx2 plays a significant role in chondrogenesis. A luciferase promoter assay and a chromosome immunoprecipitation assay showed that Runx1 expression in mouse epiphyseal cartilage was repressed by Trps1 binding to the GATA domain of the P2 promoter; the proximal segment of two promoters of the Runx1 gene. The aberrant expression of P2 transcripts was detected in growth plate chondrocytes from Trps1-null mice by in situ hybridization. In conclusion, Trps1 binds to the P2 promoter of the Runx1 gene and down-regulates Runx1 expression, which is necessary for normal cartilage formation.
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