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Ikeda Y, Tani S, Moriishi T, Kuroda A, Matsuo Y, Saeki N, Inui-Yamamoto C, Abe M, Maeda T, Rowe DW, Chung UI, Hojo H, Matsushita Y, Sawase T, Ohba S. Modeling of intramembranous ossification using human pluripotent stem cell-derived paraxial mesoderm derivatives. Regen Ther 2023; 24:536-546. [PMID: 37860130 PMCID: PMC10582276 DOI: 10.1016/j.reth.2023.09.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2023] [Revised: 09/25/2023] [Accepted: 09/28/2023] [Indexed: 10/21/2023] Open
Abstract
Vertebrates form their skeletal tissues from three distinct origins (the neural crest, paraxial mesoderm, and lateral plate mesoderm) through two distinct modes of ossification (intramembranous and endochondral ossification). Since the paraxial mesoderm generates both intramembranous and endochondral bones, it is thought to give rise to both osteoprogenitors and osteo-chondroprogenitors. However, it remains unclear what directs the paraxial mesoderm-derived cells toward these different fates in distinct skeletal elements during human skeletal development. To answer this question, we need experimental systems that recapitulate paraxial mesoderm-mediated intramembranous and endochondral ossification processes. In this study, we aimed to develop a human pluripotent stem cell (hPSC)-based system that models the human intramembranous ossification process. We found that spheroid culture of the hPSC-derived paraxial mesoderm derivatives generates osteoprogenitors or osteo-chondroprogenitors depending on stimuli. The former induced intramembranous ossification, and the latter endochondral ossification, in mouse renal capsules. Transcriptional profiling supported the notion that bone signatures were enriched in the intramembranous bone-like tissues. Thus, we developed a system that recapitulates intramembranous ossification, and that enables the induction of two distinct modes of ossification by controlling the cell fate of the hPSC-derived paraxial mesoderm derivatives.
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Affiliation(s)
- Yuki Ikeda
- Department of Tissue and Developmental Biology, Graduate School of Dentistry, Osaka University, Osaka 565-0871, Japan
- Department of Applied Prosthodontics, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki 852-8588, Japan
| | - Shoichiro Tani
- Laboratory of Clinical Biotechnology, Center for Disease Biology and Integrative Medicine, Graduate School of Medicine, The University of Tokyo 113-8655, Japan
| | - Takeshi Moriishi
- Department of Cell Biology, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki 852-8588, Japan
| | - Aiko Kuroda
- Department of Cell Biology, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki 852-8588, Japan
| | - Yuki Matsuo
- Department of Cell Biology, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki 852-8588, Japan
| | - Naoya Saeki
- Department of Tissue and Developmental Biology, Graduate School of Dentistry, Osaka University, Osaka 565-0871, Japan
| | - Chizuko Inui-Yamamoto
- Department of Tissue and Developmental Biology, Graduate School of Dentistry, Osaka University, Osaka 565-0871, Japan
| | - Makoto Abe
- Department of Tissue and Developmental Biology, Graduate School of Dentistry, Osaka University, Osaka 565-0871, Japan
| | - Takashi Maeda
- Department of Tissue and Developmental Biology, Graduate School of Dentistry, Osaka University, Osaka 565-0871, Japan
| | - David W. Rowe
- Department of Reconstructive Sciences, University of Connecticut Health Center, CT 06030, USA
| | - Ung-il Chung
- Laboratory of Clinical Biotechnology, Center for Disease Biology and Integrative Medicine, Graduate School of Medicine, The University of Tokyo 113-8655, Japan
| | - Hironori Hojo
- Laboratory of Clinical Biotechnology, Center for Disease Biology and Integrative Medicine, Graduate School of Medicine, The University of Tokyo 113-8655, Japan
| | - Yuki Matsushita
- Department of Cell Biology, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki 852-8588, Japan
| | - Takashi Sawase
- Department of Applied Prosthodontics, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki 852-8588, Japan
| | - Shinsuke Ohba
- Department of Tissue and Developmental Biology, Graduate School of Dentistry, Osaka University, Osaka 565-0871, Japan
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2
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Tani S, Okada H, Onodera S, Chijimatsu R, Seki M, Suzuki Y, Xin X, Rowe DW, Saito T, Tanaka S, Chung UI, Ohba S, Hojo H. Stem cell-based modeling and single-cell multiomics reveal gene-regulatory mechanisms underlying human skeletal development. Cell Rep 2023; 42:112276. [PMID: 36965484 DOI: 10.1016/j.celrep.2023.112276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Revised: 01/19/2023] [Accepted: 03/02/2023] [Indexed: 03/27/2023] Open
Abstract
Although the skeleton is essential for locomotion, endocrine functions, and hematopoiesis, the molecular mechanisms of human skeletal development remain to be elucidated. Here, we introduce an integrative method to model human skeletal development by combining in vitro sclerotome induction from human pluripotent stem cells and in vivo endochondral bone formation by implanting the sclerotome beneath the renal capsules of immunodeficient mice. Histological and scRNA-seq analyses reveal that the induced bones recapitulate endochondral ossification and are composed of human skeletal cells and mouse circulatory cells. The skeletal cell types and their trajectories are similar to those of human embryos. Single-cell multiome analysis reveals dynamic changes in chromatin accessibility associated with multiple transcription factors constituting cell-type-specific gene-regulatory networks (GRNs). We further identify ZEB2, which may regulate the GRNs in human osteogenesis. Collectively, these results identify components of GRNs in human skeletal development and provide a valuable model for its investigation.
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Affiliation(s)
- Shoichiro Tani
- Laboratory of Clinical Biotechnology, Center for Disease Biology and Integrative Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo 113-8655, Japan; Sensory and Motor System Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo 113-8655, Japan.
| | - Hiroyuki Okada
- Laboratory of Clinical Biotechnology, Center for Disease Biology and Integrative Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo 113-8655, Japan; Sensory and Motor System Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo 113-8655, Japan
| | - Shoko Onodera
- Department of Biochemistry, Tokyo Dental College, Tokyo 101-0061, Japan
| | - Ryota Chijimatsu
- Sensory and Motor System Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo 113-8655, Japan; Center for Comprehensive Genomic Medicine, Okayama University Hospital, Okayama 700-8558, Japan
| | - Masahide Seki
- Department of Computational Biology and Medical Sciences, Graduate School of Frontier Sciences, The University of Tokyo, Chiba 277-8562, Japan
| | - Yutaka Suzuki
- Department of Computational Biology and Medical Sciences, Graduate School of Frontier Sciences, The University of Tokyo, Chiba 277-8562, Japan
| | - Xiaonan Xin
- Department of Reconstructive Sciences, University of Connecticut Health Center, Farmington, CT 06030, USA
| | - David W Rowe
- Department of Reconstructive Sciences, University of Connecticut Health Center, Farmington, CT 06030, USA
| | - Taku Saito
- Sensory and Motor System Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo 113-8655, Japan
| | - Sakae Tanaka
- Sensory and Motor System Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo 113-8655, Japan
| | - Ung-Il Chung
- Laboratory of Clinical Biotechnology, Center for Disease Biology and Integrative Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo 113-8655, Japan; Department of Bioengineering, Graduate School of Engineering, The University of Tokyo, Tokyo 113-8655, Japan
| | - Shinsuke Ohba
- Laboratory of Clinical Biotechnology, Center for Disease Biology and Integrative Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo 113-8655, Japan; Department of Cell Biology, Institute of Biomedical Sciences, Nagasaki University, Nagasaki 852-8588, Japan; Department of Oral Anatomy and Developmental Biology, Graduate School of Dentistry, Osaka University, Osaka 565-0871, Japan.
| | - Hironori Hojo
- Laboratory of Clinical Biotechnology, Center for Disease Biology and Integrative Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo 113-8655, Japan; Department of Bioengineering, Graduate School of Engineering, The University of Tokyo, Tokyo 113-8655, Japan.
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3
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Wang H, Joshi P, Hong SH, Maye PF, Rowe DW, Shin DG. Predicting the targets of IRF8 and NFATc1 during osteoclast differentiation using the machine learning method framework cTAP. BMC Genomics 2022; 23:14. [PMID: 34991467 PMCID: PMC8740472 DOI: 10.1186/s12864-021-08159-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2021] [Accepted: 10/26/2021] [Indexed: 01/14/2023] Open
Abstract
BACKGROUND Interferon regulatory factor-8 (IRF8) and nuclear factor-activated T cells c1 (NFATc1) are two transcription factors that have an important role in osteoclast differentiation. Thanks to ChIP-seq technology, scientists can now estimate potential genome-wide target genes of IRF8 and NFATc1. However, finding target genes that are consistently up-regulated or down-regulated across different studies is hard because it requires analysis of a large number of high-throughput expression studies from a comparable context. METHOD We have developed a machine learning based method, called, Cohort-based TF target prediction system (cTAP) to overcome this problem. This method assumes that the pathway involving the transcription factors of interest is featured with multiple "functional groups" of marker genes pertaining to the concerned biological process. It uses two notions, Gene-Present Sufficiently (GP) and Gene-Absent Insufficiently (GA), in addition to log2 fold changes of differentially expressed genes for the prediction. Target prediction is made by applying multiple machine-learning models, which learn the patterns of GP and GA from log2 fold changes and four types of Z scores from the normalized cohort's gene expression data. The learned patterns are then associated with the putative transcription factor targets to identify genes that consistently exhibit Up/Down gene regulation patterns within the cohort. We applied this method to 11 publicly available GEO data sets related to osteoclastgenesis. RESULT Our experiment identified a small number of Up/Down IRF8 and NFATc1 target genes as relevant to osteoclast differentiation. The machine learning models using GP and GA produced NFATc1 and IRF8 target genes different than simply using a log2 fold change alone. Our literature survey revealed that all predicted target genes have known roles in bone remodeling, specifically related to the immune system and osteoclast formation and functions, suggesting confidence and validity in our method. CONCLUSION cTAP was motivated by recognizing that biologists tend to use Z score values present in data sets for the analysis. However, using cTAP effectively presupposes assembling a sizable cohort of gene expression data sets within a comparable context. As public gene expression data repositories grow, the need to use cohort-based analysis method like cTAP will become increasingly important.
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Affiliation(s)
- Honglin Wang
- Computer Science and Engineering Department, University of Connecticut, Storrs, USA
| | - Pujan Joshi
- Computer Science and Engineering Department, University of Connecticut, Storrs, USA
| | - Seung-Hyun Hong
- Computer Science and Engineering Department, University of Connecticut, Storrs, USA
| | - Peter F. Maye
- Department of Reconstructive Sciences, University of Connecticut Health Center, Farmington, USA
| | - David W. Rowe
- Center for Regenerative Medicine and Skeletal Development, University of Connecticut Health Center, Farmington, USA
| | - Dong-Guk Shin
- Computer Science and Engineering Department, University of Connecticut, Storrs, USA
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McMullan P, Maye P, Yang Q, Rowe DW, Germain‐Lee EL. Parental Origin of
Gsα
Inactivation Differentially Affects Bone Remodeling in a Mouse Model of Albright Hereditary Osteodystrophy. JBMR Plus 2021; 6:e10570. [PMID: 35079678 PMCID: PMC8771002 DOI: 10.1002/jbm4.10570] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Revised: 09/25/2021] [Accepted: 10/08/2021] [Indexed: 01/13/2023] Open
Abstract
Albright hereditary osteodystrophy (AHO) is caused by heterozygous inactivation of GNAS, a complex locus that encodes the alpha‐stimulatory subunit of heterotrimeric G proteins (Gsα) in addition to NESP55 and XLαs due to alternative first exons. AHO skeletal manifestations include brachydactyly, brachymetacarpia, compromised adult stature, and subcutaneous ossifications. AHO patients with maternally‐inherited GNAS mutations develop pseudohypoparathyroidism type 1A (PHP1A) with resistance to multiple hormones that mediate their actions through G protein‐coupled receptors (GPCRs) requiring Gsα (eg, parathyroid hormone [PTH], thyroid‐stimulating hormone [TSH], growth hormone–releasing hormone [GHRH], calcitonin) and severe obesity. Paternally‐inherited GNAS mutations cause pseudopseudohypoparathyroidism (PPHP), in which patients have AHO skeletal features but do not develop hormonal resistance or marked obesity. These differences between PHP1A and PPHP are caused by tissue‐specific reduction of paternal Gsα expression. Previous reports in mice have shown loss of Gsα causes osteopenia due to impaired osteoblast number and function and suggest that AHO patients could display evidence of reduced bone mineral density (BMD). However, we previously demonstrated PHP1A patients display normal‐increased BMD measurements without any correlation to body mass index or serum PTH. Due to these observed differences between PHP1A and PPHP, we utilized our laboratory's AHO mouse model to address whether Gsα heterozygous inactivation differentially affects bone remodeling based on the parental inheritance of the mutation. We identified fundamental distinctions in bone remodeling between mice with paternally‐inherited (GnasE1+/−p) versus maternally‐inherited (GnasE1+/−m) mutations, and these findings were observed predominantly in female mice. Specifically, GnasE1+/−p mice exhibited reduced bone parameters due to impaired bone formation and enhanced bone resorption. GnasE1+/−m mice, however, displayed enhanced bone parameters due to both increased osteoblast activity and normal bone resorption. These in vivo distinctions in bone remodeling between GnasE1+/−p and GnasE1+/−m mice could potentially be related to changes in the bone microenvironment driven by calcitonin‐resistance within GnasE1+/−m osteoclasts. Further studies are warranted to assess how Gsα influences osteoblast–osteoclast coupling. © 2021 The Authors. JBMR Plus published by Wiley Periodicals LLC on behalf of American Society for Bone and Mineral Research.
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Affiliation(s)
- Patrick McMullan
- Department of Pediatrics University of Connecticut School of Medicine Farmington CT USA
- Department of Reconstructive Sciences University of Connecticut School of Dental Medicine Farmington CT USA
- Center for Regenerative Medicine and Skeletal Development University of Connecticut School of Dental Medicine Farmington CT USA
| | - Peter Maye
- Department of Reconstructive Sciences University of Connecticut School of Dental Medicine Farmington CT USA
- Center for Regenerative Medicine and Skeletal Development University of Connecticut School of Dental Medicine Farmington CT USA
| | - Qingfen Yang
- Department of Pediatrics University of Connecticut School of Medicine Farmington CT USA
- Department of Reconstructive Sciences University of Connecticut School of Dental Medicine Farmington CT USA
- Center for Regenerative Medicine and Skeletal Development University of Connecticut School of Dental Medicine Farmington CT USA
| | - David W. Rowe
- Department of Reconstructive Sciences University of Connecticut School of Dental Medicine Farmington CT USA
- Center for Regenerative Medicine and Skeletal Development University of Connecticut School of Dental Medicine Farmington CT USA
| | - Emily L. Germain‐Lee
- Department of Pediatrics University of Connecticut School of Medicine Farmington CT USA
- Department of Reconstructive Sciences University of Connecticut School of Dental Medicine Farmington CT USA
- Center for Regenerative Medicine and Skeletal Development University of Connecticut School of Dental Medicine Farmington CT USA
- Albright Center, Division of Pediatric Endocrinology Connecticut Children's Farmington CT USA
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5
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Zhou Y, Xin X, Wang L, Wang B, Chen L, Liu O, Rowe DW, Xu M. Senolytics improve bone forming potential of bone marrow mesenchymal stem cells from aged mice. NPJ Regen Med 2021; 6:34. [PMID: 34117259 PMCID: PMC8195980 DOI: 10.1038/s41536-021-00145-z] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Accepted: 05/25/2021] [Indexed: 02/06/2023] Open
Abstract
The osteogenic potential of bone marrow mesenchymal stem cells (BMSCs) declines dramatically with aging. By using a calvarial defect model, we showed that a senolytic cocktail (dasatinib+quercetin; D + Q) improved osteogenic capacity of aged BMSC both in vitro and in vivo. The study presented a model to assess strategies to improve bone-forming potential on aged BMSCs. D + Q might hold promise for improving BMSC function in aged populations.
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Affiliation(s)
- Yueying Zhou
- Hunan Key Laboratory of Oral Health Research & Hunan 3D Printing Engineering Research Center of Oral Care & Hunan Clinical Research Center of Oral Major Diseases and Oral Health & Xiangya Stomatological Hospital & Xiangya School of Stomatology, Central South University, Changsha, Hunan, China.,UConn Center on Aging, Farmington, CT, USA.,Center for Regenerative Medicine and Skeletal Development, Farmington, CT, USA
| | - Xiaonan Xin
- Center for Regenerative Medicine and Skeletal Development, Farmington, CT, USA
| | - Lichao Wang
- UConn Center on Aging, Farmington, CT, USA.,Department of Genetics and Genome Sciences, UConn Health, Farmington, CT, USA
| | - Binsheng Wang
- UConn Center on Aging, Farmington, CT, USA.,Department of Genetics and Genome Sciences, UConn Health, Farmington, CT, USA
| | - Li Chen
- Center for Regenerative Medicine and Skeletal Development, Farmington, CT, USA
| | - Ousheng Liu
- Hunan Key Laboratory of Oral Health Research & Hunan 3D Printing Engineering Research Center of Oral Care & Hunan Clinical Research Center of Oral Major Diseases and Oral Health & Xiangya Stomatological Hospital & Xiangya School of Stomatology, Central South University, Changsha, Hunan, China
| | - David W Rowe
- Center for Regenerative Medicine and Skeletal Development, Farmington, CT, USA.
| | - Ming Xu
- UConn Center on Aging, Farmington, CT, USA. .,Department of Genetics and Genome Sciences, UConn Health, Farmington, CT, USA.
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6
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Rowe DW, Hong SH, Zhang C, Shin DG, Adams DJ, Youngstrom DW, Chen L, Wu Z, Zhou Y, Maye P. Skeletal screening IMPC/KOMP using μCT and computer automated cryohistology: Application to the Efna4 KO mouse line. Bone 2021; 144:115688. [PMID: 33065355 DOI: 10.1016/j.bone.2020.115688] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Accepted: 10/09/2020] [Indexed: 01/01/2023]
Abstract
The IMPC/KOMP program provides the opportunity to screen mice harboring well defined gene-inactivation mutations in a uniform genetic background. The program performs a global tissue phenotyping survey that includes skeletal x-rays and bone density measurements. Because of the relative insensitivity of the two screening tests for detecting variance in bone architecture, we initiated a secondary screen based on μCT and a cryohistolomorphological workflow that was performed on the femur and vertebral compartments on 220 randomly selected knockouts (KOs) and 36 control bone samples over a 2 1/2 year collection period provided by one of the production/phenotyping centers. The performance of the screening protocol was designed to balance throughput and cost versus sensitivity and informativeness such that the output would be of value to the skeletal biology community. Here we report the reliability of this screening protocol to establish criteria for control skeletal variance at the architectural, dynamic and cellular histomorphometric level. Unexpected properties of the control population include unusually high variance in BV/TV in male femurs and greater bone formation and bone turnover rates in the female femur and vertebral trabeculae bone compartments. However, the manner for maintaining bone formation differed between these two bone sites. The vertebral compartment relies on maintaining a greater number of bone forming surfaces while the femoral compartment utilized more matrix production per cell. The comparison of the architectural properties obtained by μCT and histomorphology revealed significant differences in values for BV/TV, Tb.Th and Tb.N which is attributable to sampling density of the two methods. However, as a screening tool, expressing the ratio of KO to the control line as obtained by either method was remarkably similar. It identified KOs with significant variance which led to a more detailed histological analysis. Our findings are exemplified by the Efna4 KO, in which a high BV/TV was identified by μCT and confirmed by histomorphometry in the femur but not in the vertebral compartment. Dynamic labeling showed a marked increase in BFR which was attributable to increased labeling surfaces. Cellular analysis confirmed partitioning of osteoblast to labeling surfaces and a marked decrease in osteoclastic activity on both labeling and quiescent surfaces. This pattern of increased bone modeling would not be expected based on prior studies of the Ephrin-Ephrin receptor signaling pathways between osteoblasts and osteoclasts. Overall, our findings underscore why unbiased screening is needed because it can reveal unknown or unanticipated genes that impact skeletal variation.
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Affiliation(s)
- David W Rowe
- Regenerative Medicine and Skeletal Development, Department of Reconstructive Sciences, Biomaterials and Skeletal Development, School of Dental Medicine, University of Connecticut Health, Farmington, CT 06030, United States of America.
| | - Seung-Hyun Hong
- Computer Science & Engineering, School of Engineering, University of Connecticut, Storrs, CT 06269, United States of America
| | - Caibin Zhang
- Regenerative Medicine and Skeletal Development, Department of Reconstructive Sciences, Biomaterials and Skeletal Development, School of Dental Medicine, University of Connecticut Health, Farmington, CT 06030, United States of America
| | - Dong-Guk Shin
- Computer Science & Engineering, School of Engineering, University of Connecticut, Storrs, CT 06269, United States of America
| | - Douglas J Adams
- Department of Orthopedics, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, United States of America
| | - Daniel W Youngstrom
- Department of Orthopaedic Surgery, School of Medicine, University of Connecticut Health, Farmington, CT 06030, United States of America
| | - Li Chen
- Regenerative Medicine and Skeletal Development, Department of Reconstructive Sciences, Biomaterials and Skeletal Development, School of Dental Medicine, University of Connecticut Health, Farmington, CT 06030, United States of America
| | - Zhihua Wu
- Regenerative Medicine and Skeletal Development, Department of Reconstructive Sciences, Biomaterials and Skeletal Development, School of Dental Medicine, University of Connecticut Health, Farmington, CT 06030, United States of America
| | - Yueying Zhou
- Regenerative Medicine and Skeletal Development, Department of Reconstructive Sciences, Biomaterials and Skeletal Development, School of Dental Medicine, University of Connecticut Health, Farmington, CT 06030, United States of America
| | - Peter Maye
- Regenerative Medicine and Skeletal Development, Department of Reconstructive Sciences, Biomaterials and Skeletal Development, School of Dental Medicine, University of Connecticut Health, Farmington, CT 06030, United States of America
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7
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Sutter PA, Karki S, Crawley I, Singh V, Bernt KM, Rowe DW, Crocker SJ, Bayarsaihan D, Guzzo RM. Mesenchyme-specific loss of Dot1L histone methyltransferase leads to skeletal dysplasia phenotype in mice. Bone 2021; 142:115677. [PMID: 33022452 PMCID: PMC7744341 DOI: 10.1016/j.bone.2020.115677] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Revised: 09/20/2020] [Accepted: 10/01/2020] [Indexed: 12/17/2022]
Abstract
Chromatin modifying enzymes play essential roles in skeletal development and bone maintenance, and deregulation of epigenetic mechanisms can lead to skeletal growth and malformation disorders. Here, we report a novel skeletal dysplasia phenotype in mice with conditional loss of Disruptor of telomeric silencing 1-like (Dot1L) histone methyltransferase in limb mesenchymal progenitors and downstream descendants. Phenotypic characterizations of mice with Dot1L inactivation by Prrx1-Cre (Dot1L-cKOPrrx1) revealed limb shortening, abnormal bone morphologies, and forelimb dislocations. Our in vivo and in vitro data support a crucial role for Dot1L in regulating growth plate chondrocyte proliferation and differentiation, extracellular matrix production, and secondary ossification center formation. Micro-computed tomography analysis of femurs revealed that partial loss of Dot1L expression is sufficient to impair trabecular bone formation and microarchitecture in young mice. Moreover, RNAseq analysis of Dot1L deficient chondrocytes implicated Dot1L in the regulation of key genes and pathways necessary to promote cell cycle regulation and skeletal growth. Collectively, our data show that early expression of Dot1L in limb mesenchyme provides essential regulatory control of endochondral bone morphology, growth, and stability.
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Affiliation(s)
- Pearl A Sutter
- Department of Neuroscience, School of Medicine, University of Connecticut Health, Farmington, CT, United States of America
| | - Sangita Karki
- Department of Neuroscience, School of Medicine, University of Connecticut Health, Farmington, CT, United States of America
| | - Ilan Crawley
- Department of Neuroscience, School of Medicine, University of Connecticut Health, Farmington, CT, United States of America
| | - Vijender Singh
- Bioinformatics, University of Connecticut, Storrs, CT, United States of America
| | - Kathrin M Bernt
- Division of Pediatric Oncology, Children's Hospital of Philadelphia, Perelman School of Medicine at the University of Pennsylvania and Abramson Cancer Center, Philadelphia, PA, United States of America
| | - David W Rowe
- Department of Reconstructive Sciences, School of Dental Medicine, University of Connecticut Health, Farmington, CT, United States of America; Center for Regenerative Medicine and Skeletal Development, Farmington, CT, United States of America
| | - Stephen J Crocker
- Department of Neuroscience, School of Medicine, University of Connecticut Health, Farmington, CT, United States of America
| | - Dashzeveg Bayarsaihan
- Department of Reconstructive Sciences, School of Dental Medicine, University of Connecticut Health, Farmington, CT, United States of America; Center for Regenerative Medicine and Skeletal Development, Farmington, CT, United States of America
| | - Rosa M Guzzo
- Department of Neuroscience, School of Medicine, University of Connecticut Health, Farmington, CT, United States of America.
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8
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Yu L, Rowe DW, Perera IP, Zhang J, Suib SL, Xin X, Wei M. Intrafibrillar Mineralized Collagen-Hydroxyapatite-Based Scaffolds for Bone Regeneration. ACS Appl Mater Interfaces 2020; 12:18235-18249. [PMID: 32212615 DOI: 10.1021/acsami.0c00275] [Citation(s) in RCA: 62] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
As one of the major challenges in the field of tissue engineering, large skeletal defects have attracted wide attention from researchers. Collagen (Col) and hydroxyapatite (HA), the most abundant protein and the main component in natural bone, respectively, are usually used as a biomimetic composite material in tissue engineering due to their excellent biocompatibility and biodegradability. In this study, novel intrafibrillar mineralized Col-HA-based scaffolds, constructed in either cellular or lamellar microstructures, were established through a biomimetic method to enhance the new bone-regenerating capability of tissue engineering scaffolds. Moreover, iron (Fe) and manganese (Mn), two of the essential trace elements in the body, were successfully incorporated into the lamellar scaffold to further improve the osteoinductivity of these biomaterials. It was found that the lamellar scaffolds demonstrated better osteogenic abilities compared to both in-house and commercial Col-HA-based cellular scaffolds in vitro and in vivo. Meanwhile, Fe/Mn incorporation further amplified the osteogenic promotion of the lamellar scaffolds. More importantly, a synergistic effect was observed in the Fe and Mn dual-element-incorporated lamellar scaffolds for both in vitro osteogenic differentiation of bone marrow mesenchymal stem cells (BMSCs) and in vivo bone regeneration loaded with fresh bone marrow cells. This study provides a simple but practical strategy for the creation of functional scaffolds for bone regeneration.
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Affiliation(s)
- Le Yu
- Department of Chemical and Biomolecular Engineering, Ohio University, Athens, Ohio 45701, United States
| | - David W Rowe
- Center for Regenerative Medicine and Skeletal Development, School of Dental Medicine, University of Connecticut Health Center, Farmington, Connecticut 06032, United States
| | | | | | | | - Xiaonan Xin
- Center for Regenerative Medicine and Skeletal Development, School of Dental Medicine, University of Connecticut Health Center, Farmington, Connecticut 06032, United States
| | - Mei Wei
- Department of Mechanical Engineering, Ohio University, Athens, Ohio 45701, United States
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9
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Wang B, Liu Z, Chen VP, Wang L, Inman CL, Zhou Y, Guo C, Tchkonia T, Rowe DW, Kuchel GA, Robson P, Kirkland JL, Xu M. Transplanting cells from old but not young donors causes physical dysfunction in older recipients. Aging Cell 2020; 19:e13106. [PMID: 31971661 PMCID: PMC7059132 DOI: 10.1111/acel.13106] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2019] [Revised: 11/29/2019] [Accepted: 12/30/2019] [Indexed: 01/07/2023] Open
Abstract
Adipose-derived mesenchymal stem cell (ADSC)-based regenerative therapies have shown potential for use in many chronic diseases. Aging diminishes stem cell regenerative potential, yet it is unknown whether stem cells from aged donors cause adverse effects in recipients. ADSCs can be obtained using minimally invasive approaches and possess low immunogenicity. Nevertheless, we found that transplanting ADSCs from old donors, but not those from young donors, induces physical dysfunction in older recipient mice. Using single-cell transcriptomic analysis, we identified a naturally occurring senescent cell-like population in ADSCs primarily from old donors that resembles in vitro-generated senescent cells with regard to a number of key pathways. Our study reveals a previously unrecognized health concern due to ADSCs from old donors and lays the foundation for a new avenue of research to devise interventions to reduce harmful effects of ADSCs from old donors.
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Affiliation(s)
- Binsheng Wang
- UConn Center on Aging UConn Health Farmington Connecticut
- Department of Genetics and Genome Sciences UConn Health Farmington Connecticut
| | - Zukai Liu
- UConn Center on Aging UConn Health Farmington Connecticut
- Department of Genetics and Genome Sciences UConn Health Farmington Connecticut
- Biomedical Science Graduate Program UConn Health Farmington Connecticut
| | - Vicky P. Chen
- Department of Molecular Pharmacology and Experimental Therapeutics Mayo Clinic Rochester Minnesota
| | - Lichao Wang
- UConn Center on Aging UConn Health Farmington Connecticut
- Department of Genetics and Genome Sciences UConn Health Farmington Connecticut
| | | | - Yueying Zhou
- Xiangya Stomatological Hospital Central South University Changsha China
- Center for Regenerative Medicine and Skeletal Development UConn Health UConn Health Farmington Connecticut
| | - Chun Guo
- Robert and Arlene Kogod Center on Aging Mayo Clinic Rochester Minnesota
- Center for Regenerative Medicine and Skeletal Development UConn Health UConn Health Farmington Connecticut
| | - Tamar Tchkonia
- Robert and Arlene Kogod Center on Aging Mayo Clinic Rochester Minnesota
| | - David W. Rowe
- Center for Regenerative Medicine and Skeletal Development UConn Health UConn Health Farmington Connecticut
| | | | - Paul Robson
- Department of Genetics and Genome Sciences UConn Health Farmington Connecticut
- The Jackson Laboratory for Genomic Medicine Farmington Connecticut
| | - James L. Kirkland
- Robert and Arlene Kogod Center on Aging Mayo Clinic Rochester Minnesota
| | - Ming Xu
- UConn Center on Aging UConn Health Farmington Connecticut
- Department of Genetics and Genome Sciences UConn Health Farmington Connecticut
- Robert and Arlene Kogod Center on Aging Mayo Clinic Rochester Minnesota
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10
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Zujur D, Kanke K, Onodera S, Tani S, Lai J, Azuma T, Xin X, Lichtler AC, Rowe DW, Saito T, Tanaka S, Masaki H, Nakauchi H, Chung UI, Hojo H, Ohba S. Stepwise strategy for generating osteoblasts from human pluripotent stem cells under fully defined xeno-free conditions with small-molecule inducers. Regen Ther 2020; 14:19-31. [PMID: 31988991 PMCID: PMC6965656 DOI: 10.1016/j.reth.2019.12.010] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2019] [Revised: 11/20/2019] [Accepted: 12/24/2019] [Indexed: 01/01/2023] Open
Abstract
Clinically relevant human induced pluripotent stem cell (hiPSC) derivatives require efficient protocols to differentiate hiPSCs into specific lineages. Here we developed a fully defined xeno-free strategy to direct hiPSCs toward osteoblasts within 21 days. The strategy successfully achieved the osteogenic induction of four independently derived hiPSC lines by a sequential use of combinations of small-molecule inducers. The induction first generated mesodermal cells, which subsequently recapitulated the developmental expression pattern of major osteoblast genes and proteins. Importantly, Col2.3-Cherry hiPSCs subjected to this strategy strongly expressed the cherry fluorescence that has been observed in bone-forming osteoblasts in vivo. Moreover, the protocol combined with a three-dimensional (3D) scaffold was suitable for the generation of a xeno-free 3D osteogenic system. Thus, our strategy offers a platform with significant advantages for bone biology studies and it will also contribute to clinical applications of hiPSCs to skeletal regenerative medicine.
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Affiliation(s)
- Denise Zujur
- Department of Bioengineering, Graduate School of Engineering, The University of Tokyo, Tokyo, Japan
| | - Kosuke Kanke
- Department of Sensory and Motor System Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Shoko Onodera
- Department of Biochemistry, Tokyo Dental College, Tokyo, Japan
| | - Shoichiro Tani
- Department of Sensory and Motor System Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Jenny Lai
- Department of Bioengineering, Graduate School of Engineering, The University of Tokyo, Tokyo, Japan
| | - Toshifumi Azuma
- Department of Biochemistry, Tokyo Dental College, Tokyo, Japan
| | - Xiaonan Xin
- Department of Reconstructive Sciences, University of Connecticut Health Center, Farmington, CT, USA
| | - Alexander C Lichtler
- Department of Reconstructive Sciences, University of Connecticut Health Center, Farmington, CT, USA
| | - David W Rowe
- Department of Reconstructive Sciences, University of Connecticut Health Center, Farmington, CT, USA
| | - Taku Saito
- Department of Sensory and Motor System Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Sakae Tanaka
- Department of Sensory and Motor System Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Hideki Masaki
- Center for Stem Cell Biology and Regenerative Medicine, Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Hiromitsu Nakauchi
- Center for Stem Cell Biology and Regenerative Medicine, Institute of Medical Science, The University of Tokyo, Tokyo, Japan.,Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, CA, USA
| | - Ung-Il Chung
- Department of Bioengineering, Graduate School of Engineering, The University of Tokyo, Tokyo, Japan.,Center for Disease Biology and Integrative Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Hironori Hojo
- Department of Bioengineering, Graduate School of Engineering, The University of Tokyo, Tokyo, Japan.,Center for Disease Biology and Integrative Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Shinsuke Ohba
- Department of Bioengineering, Graduate School of Engineering, The University of Tokyo, Tokyo, Japan.,Center for Disease Biology and Integrative Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
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11
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Lipphardt M, Dihazi H, Jeon NL, Dadafarin S, Ratliff BB, Rowe DW, Müller GA, Goligorsky MS. Dickkopf-3 in aberrant endothelial secretome triggers renal fibroblast activation and endothelial-mesenchymal transition. Nephrol Dial Transplant 2019; 34:49-62. [PMID: 29726981 DOI: 10.1093/ndt/gfy100] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2017] [Accepted: 03/18/2018] [Indexed: 01/22/2023] Open
Abstract
Background Our laboratory has previously demonstrated that Sirt1endo-/- mice show endothelial dysfunction and exaggerated renal fibrosis, whereas mice with silenced endothelial transforming growth factor beta (TGF-β) signaling are resistant to fibrogenic signals. Considering the fact that the only difference between these mutant mice is confined to the vascular endothelium, this indicates that secreted substances contribute to these contrasting responses. Methods We performed an unbiased proteomic analysis of the secretome of renal microvascular endothelial cells (RMVECs) isolated from these two mutants. We cultured renal fibroblasts and RMVECs and used microfluidic devices for coculturing. Results Dickkopf-3 (DKK3), a putative ligand of the Wnt/β-catenin pathway, was present exclusively in the fibrogenic secretome. In cultured fibroblasts, DKK3 potently induced myofibroblast activation. In addition, DKK3 antagonized effects of DKK1, a known inhibitor of the Wnt pathway, in conversion of fibroblasts to myofibroblasts. In RMVECs, DKK3 induced endothelial-mesenchymal transition and impaired their angiogenic competence. The inhibition of endothelial outgrowth, enhanced myofibroblast formation and endothelial-mesenchymal transition were confirmed in coculture. In reporter DKK3-eGFP × Col3.6-GFPcyan mice, DKK3 was marginally expressed under basal conditions. Adriamycin-induced nephropathy resulted in upregulation of DKK3 expression in tubular and, to a lesser degree, endothelial compartments. Sulindac sulfide was found to exhibit superior Wnt pathway-suppressive action and decreased DKK3 signals and the extent of renal fibrosis. Conclusions In conclusion, this unbiased proteomic screen of the profibrogenic endothelial secretome revealed DKK3 acting as an agonist of the Wnt pathway, enhancing formation of myofibroblasts and endothelial-mesenchymal transition and impairing angiogenesis. A potent inhibitor of the Wnt pathway, sulindac sulfide, suppressed nephropathy-induced DKK3 expression and renal fibrosis.
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Affiliation(s)
- Mark Lipphardt
- Departments of Medicine, Pharmacology and Physiology, Renal Research Institute, New York Medical College at Touro University, Valhalla, NY, USA.,Department of Nephrology and Rheumatology, Göttingen University Medical School, Göttingen, Germany
| | - Hassan Dihazi
- Department of Nephrology and Rheumatology, Göttingen University Medical School, Göttingen, Germany
| | - Noo Li Jeon
- Division of WCU Multiscale Mechanical Design, School of Mechanical and Aerospace Engineering, Institute of Advanced Machinery and Design, Seoul National University, Seoul, Korea
| | - Sina Dadafarin
- Departments of Medicine, Pharmacology and Physiology, Renal Research Institute, New York Medical College at Touro University, Valhalla, NY, USA
| | - Brian B Ratliff
- Departments of Medicine, Pharmacology and Physiology, Renal Research Institute, New York Medical College at Touro University, Valhalla, NY, USA
| | - David W Rowe
- Department of Reconstructive Sciences, Biomaterials and Skeletal Development, Center for Regenerative Medicine and Skeletal Development, School of Dental Medicine, University of Connecticut Health Center, Farmington, CT, USA
| | - Gerhard A Müller
- Department of Nephrology and Rheumatology, Göttingen University Medical School, Göttingen, Germany
| | - Michael S Goligorsky
- Departments of Medicine, Pharmacology and Physiology, Renal Research Institute, New York Medical College at Touro University, Valhalla, NY, USA
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12
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He L, Zhou J, Chen M, Lin CS, Kim SG, Zhou Y, Xiang L, Xie M, Bai H, Yao H, Shi C, Coelho PG, Bromage TG, Hu B, Tovar N, Witek L, Wu J, Chen K, Gu W, Zheng J, Sheu TJ, Zhong J, Wen J, Niu Y, Cheng B, Gong Q, Owens DM, Stanislauskas M, Pei J, Chotkowski G, Wang S, Yang G, Zegarelli DJ, Shi X, Finkel M, Zhang W, Li J, Cheng J, Tarnow DP, Zhou X, Wang Z, Jiang X, Romanov A, Rowe DW, Wang S, Ye L, Ling J, Mao J. Parenchymal and stromal tissue regeneration of tooth organ by pivotal signals reinstated in decellularized matrix. Nat Mater 2019; 18:627-637. [PMID: 31114073 DOI: 10.1038/s41563-019-0368-6] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2017] [Accepted: 04/09/2019] [Indexed: 02/05/2023]
Abstract
Cells are transplanted to regenerate an organs' parenchyma, but how transplanted parenchymal cells induce stromal regeneration is elusive. Despite the common use of a decellularized matrix, little is known as to the pivotal signals that must be restored for tissue or organ regeneration. We report that Alx3, a developmentally important gene, orchestrated adult parenchymal and stromal regeneration by directly transactivating Wnt3a and vascular endothelial growth factor. In contrast to the modest parenchyma formed by native adult progenitors, Alx3-restored cells in decellularized scaffolds not only produced vascularized stroma that involved vascular endothelial growth factor signalling, but also parenchymal dentin via the Wnt/β-catenin pathway. In an orthotopic large-animal model following parenchyma and stroma ablation, Wnt3a-recruited endogenous cells regenerated neurovascular stroma and differentiated into parenchymal odontoblast-like cells that extended the processes into newly formed dentin with a structure-mechanical equivalency to native dentin. Thus, the Alx3-Wnt3a axis enables postnatal progenitors with a modest innate regenerative capacity to regenerate adult tissues. Depleted signals in the decellularized matrix may be reinstated by a developmentally pivotal gene or corresponding protein.
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Affiliation(s)
- Ling He
- Columbia University, Center for Craniofacial Regeneration, New York, NY, USA.,Operative Dentistry and Endodontics, Guanghua School of Stomatology, Affiliated Stomatology Hospital, Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Jian Zhou
- Columbia University, Center for Craniofacial Regeneration, New York, NY, USA.,Molecular Laboratory for Gene Therapy and Tooth Regeneration, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, Capital Medical University School of Stomatology, Beijing, China
| | - Mo Chen
- Columbia University, Center for Craniofacial Regeneration, New York, NY, USA
| | - Chyuan-Sheng Lin
- Department of Pathology and Cell Biology, Columbia University, New York, NY, USA
| | - Sahng G Kim
- Columbia University, Center for Craniofacial Regeneration, New York, NY, USA.,Columbia University College of Dental Medicine, New York, NY, USA
| | - Yue Zhou
- Columbia University, Center for Craniofacial Regeneration, New York, NY, USA.,Department of Conservative Dentistry, Laboratory of Biomedical Science and Translational Medicine, School of Stomatology, Tongji University, Shanghai, China
| | - Lusai Xiang
- Columbia University, Center for Craniofacial Regeneration, New York, NY, USA.,Operative Dentistry and Endodontics, Guanghua School of Stomatology, Affiliated Stomatology Hospital, Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Ming Xie
- Columbia University, Center for Craniofacial Regeneration, New York, NY, USA.,Department of Prosthodontics, Shanghai Jiao Tong University, Shanghai, China
| | - Hanying Bai
- Columbia University, Center for Craniofacial Regeneration, New York, NY, USA
| | - Hai Yao
- Department of Bioengineering, Clemson University, Charleston, SC, USA
| | - Changcheng Shi
- Department of Bioengineering, Clemson University, Charleston, SC, USA
| | - Paulo G Coelho
- Department of Biomaterials and Biomimetics, New York University, New York, NY, USA
| | - Timothy G Bromage
- Department of Biomaterials and Biomimetics, New York University, New York, NY, USA
| | - Bin Hu
- Department of Biomaterials and Biomimetics, New York University, New York, NY, USA
| | - Nick Tovar
- Department of Biomaterials and Biomimetics, New York University, New York, NY, USA
| | - Lukasz Witek
- Department of Biomaterials and Biomimetics, New York University, New York, NY, USA
| | - Jiaqian Wu
- Vivian L. Smith Department of Neurosurgery, Center for Stem Cell and Regenerative Medicine University of Texas McGovern Medical School at Houston, Houston, TX, USA
| | - Kenian Chen
- Vivian L. Smith Department of Neurosurgery, Center for Stem Cell and Regenerative Medicine University of Texas McGovern Medical School at Houston, Houston, TX, USA
| | - Wei Gu
- Department of Pathology and Cell Biology, Columbia University, New York, NY, USA
| | - Jinxuan Zheng
- Columbia University, Center for Craniofacial Regeneration, New York, NY, USA.,Operative Dentistry and Endodontics, Guanghua School of Stomatology, Affiliated Stomatology Hospital, Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Tzong-Jen Sheu
- University of Rochester Medical Center, School of Medicine and Dentistry, Rochester, NY, USA
| | - Juan Zhong
- Columbia University, Center for Craniofacial Regeneration, New York, NY, USA.,Operative Dentistry and Endodontics, Guanghua School of Stomatology, Affiliated Stomatology Hospital, Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Jin Wen
- Columbia University, Center for Craniofacial Regeneration, New York, NY, USA.,Department of Prosthodontics, Shanghai Jiao Tong University, Shanghai, China
| | - Yuting Niu
- Columbia University, Center for Craniofacial Regeneration, New York, NY, USA
| | - Bin Cheng
- Columbia University Mailman School of Public Health, Department of Biostatistics, New York, NY, USA
| | - Qimei Gong
- Columbia University, Center for Craniofacial Regeneration, New York, NY, USA.,Operative Dentistry and Endodontics, Guanghua School of Stomatology, Affiliated Stomatology Hospital, Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - David M Owens
- Department of Pathology and Cell Biology, Columbia University, New York, NY, USA.,Department of Dermatology, Columbia University, New York, NY, USA
| | | | - Jasmine Pei
- Columbia University, Center for Craniofacial Regeneration, New York, NY, USA
| | | | - Sainan Wang
- Columbia University, Center for Craniofacial Regeneration, New York, NY, USA
| | - Guodong Yang
- Columbia University, Center for Craniofacial Regeneration, New York, NY, USA
| | | | - Xin Shi
- Columbia University, Center for Craniofacial Regeneration, New York, NY, USA
| | | | - Wen Zhang
- Columbia University, Center for Craniofacial Regeneration, New York, NY, USA.,Operative Dentistry and Endodontics, Guanghua School of Stomatology, Affiliated Stomatology Hospital, Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Junyuan Li
- Columbia University, Center for Craniofacial Regeneration, New York, NY, USA
| | - Jiayi Cheng
- Columbia University, Center for Craniofacial Regeneration, New York, NY, USA
| | - Dennis P Tarnow
- Columbia University College of Dental Medicine, New York, NY, USA
| | - Xuedong Zhou
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, West China School of Stomatology, Sichuan University, Chengdu, China
| | - Zuolin Wang
- Department of Conservative Dentistry, Laboratory of Biomedical Science and Translational Medicine, School of Stomatology, Tongji University, Shanghai, China
| | - Xinquan Jiang
- Department of Prosthodontics, Shanghai Jiao Tong University, Shanghai, China
| | - Alexander Romanov
- Institute of Comparative Medicine, Columbia University Medical Center, New York, NY, USA
| | - David W Rowe
- Center for Regenerative Medicine and Skeletal Development, University of Connecticut Health Science Center, Farmington, CT, USA
| | - Songlin Wang
- Molecular Laboratory for Gene Therapy and Tooth Regeneration, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, Capital Medical University School of Stomatology, Beijing, China
| | - Ling Ye
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, West China School of Stomatology, Sichuan University, Chengdu, China
| | - Junqi Ling
- Operative Dentistry and Endodontics, Guanghua School of Stomatology, Affiliated Stomatology Hospital, Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China.
| | - Jeremy Mao
- Columbia University, Center for Craniofacial Regeneration, New York, NY, USA. .,Department of Pathology and Cell Biology, Columbia University, New York, NY, USA. .,Columbia University College of Dental Medicine, New York, NY, USA. .,Department of Orthopedic Surgery, Columbia University Physician and Surgeons, New York, NY, USA. .,Department of Biomedical Engineering, Columbia University, New York, NY, USA.
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13
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Mikael PE, Golebiowska AA, Xin X, Rowe DW, Nukavarapu SP. Evaluation of an Engineered Hybrid Matrix for Bone Regeneration via Endochondral Ossification. Ann Biomed Eng 2019; 48:992-1005. [PMID: 31037444 DOI: 10.1007/s10439-019-02279-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2019] [Accepted: 04/24/2019] [Indexed: 12/28/2022]
Abstract
Despite its regenerative ability, long and segmental bone defect repair remains a significant orthopedic challenge. Conventional tissue engineering efforts induce bone formation through intramembranous ossification (IO) which limits vascular formation and leads to poor bone regeneration. To overcome this challenge, a novel hybrid matrix comprised of a load-bearing polymer template and a gel phase is designed and assessed for bone regeneration. Our previous studies developed a synthetic ECM, hyaluronan (HA)-fibrin (FB), that is able to mimic cartilage-mediated bone formation in vitro. In this study, the well-characterized HA-FB hydrogel is combined with a biodegradable polymer template to form a hybrid matrix. In vitro evaluation of the matrix showed cartilage template formation, cell recruitment and recruited cell osteogenesis, essential stages in endochondral ossification. A transgenic reporter-mouse critical-defect model was used to evaluate the bone healing potential of the hybrid matrix in vivo. The results demonstrated host cell recruitment into the hybrid matrix that led to new bone formation and subsequent remodeling of the mineralization. Overall, the study developed and evaluated a novel load-bearing graft system for bone regeneration via endochondral ossification.
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Affiliation(s)
- Paiyz E Mikael
- Department of Materials Science, & Engineering, University of Connecticut, Storrs, CT, 06269, USA
| | - Aleksandra A Golebiowska
- Department of Biomedical Engineering, University of Connecticut, 260 Glenbrook Road, Unit 3247, Storrs, CT, 06269, USA
| | - Xiaonan Xin
- Center for Regenerative Medicine and Skeletal Development, University of Connecticut Health, Farmington, CT, 06032, USA
| | - David W Rowe
- Center for Regenerative Medicine and Skeletal Development, University of Connecticut Health, Farmington, CT, 06032, USA
| | - Syam P Nukavarapu
- Department of Materials Science, & Engineering, University of Connecticut, Storrs, CT, 06269, USA. .,Department of Biomedical Engineering, University of Connecticut, 260 Glenbrook Road, Unit 3247, Storrs, CT, 06269, USA. .,Department of Orthopaedic Surgery, University of Connecticut Health, Farmington, CT, 06032, USA.
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14
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Xin X, Jiang X, Wang L, Mikael P, McCarthy MB, Chen L, Mazzocca AD, Nukavarapu S, Lichtler AC, Rowe DW. Histological Criteria that Distinguish Human and Mouse Bone Formed Within a Mouse Skeletal Repair Defect. J Histochem Cytochem 2019; 67:401-417. [PMID: 30848692 DOI: 10.1369/0022155419836436] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
The effectiveness of autologous cell-based skeletal repair continues to be controversial in part because in vitro predictors of in vivo human bone formation by cultured human progenitor cells are not reliable. To assist in the development of in vivo assays of human osteoprogenitor potential, a fluorescence-based histology of nondecalcified mineralized tissue is presented that provides multiple criteria to distinguish human and host osteoblasts, osteocytes, and accumulated bone matrix in a mouse calvarial defect model. These include detection of an ubiquitously expressed red fluorescent protein reporter by the implanted human cells, antibodies specific to human bone sialoprotein and a human nuclear antigen, and expression of a bone/fibroblast restricted green fluorescent protein reporter in the host tissue. Using low passage bone marrow-derived stromal cells, robust human bone matrix formation was obtained. However, a striking feature is the lack of mouse bone marrow investment and osteoclasts within the human bone matrix. This deficiency may account for the accumulation of a disorganized human bone matrix that has not undergone extensive remodeling. These features, which would not be appreciated by traditional decalcified paraffin histology, indicate the human bone matrix is not undergoing active remodeling and thus the full differentiation potential of the implanted human cells within currently used mouse models is not being realized.
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Affiliation(s)
- Xiaonan Xin
- Department of Reconstructive Sciences, University of Connecticut Health Center, Farmington, Connecticut
| | - Xi Jiang
- Department of Reconstructive Sciences, University of Connecticut Health Center, Farmington, Connecticut
| | - Liping Wang
- Department of Reconstructive Sciences, University of Connecticut Health Center, Farmington, Connecticut
| | - Paiyz Mikael
- Department of Orthopedic Surgery, University of Connecticut Health Center, Farmington, Connecticut
| | - Mary Beth McCarthy
- Department of Orthopedic Surgery, University of Connecticut Health Center, Farmington, Connecticut
| | - Li Chen
- Department of Reconstructive Sciences, University of Connecticut Health Center, Farmington, Connecticut
| | - Augustus D Mazzocca
- Department of Orthopedic Surgery, University of Connecticut Health Center, Farmington, Connecticut
| | - Syam Nukavarapu
- Department of Orthopedic Surgery, University of Connecticut Health Center, Farmington, Connecticut.,Department of Materials Science and Engineering, University of Connecticut, Storrs, Connecticut
| | - Alexander C Lichtler
- Department of Reconstructive Sciences, University of Connecticut Health Center, Farmington, Connecticut
| | - David W Rowe
- Department of Reconstructive Sciences, University of Connecticut Health Center, Farmington, Connecticut
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15
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Clearfield DS, Xin X, Yadav S, Rowe DW, Wei M. Osteochondral Differentiation of Fluorescent Multireporter Cells on Zonally-Organized Biomaterials. Tissue Eng Part A 2019; 25:468-486. [DOI: 10.1089/ten.tea.2018.0135] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Drew S. Clearfield
- Department of Materials Science and Engineering, Institute of Materials Science, University of Connecticut, Storrs, Connecticut
- Center for Regenerative Medicine and Skeletal Development and School of Dental Medicine, University of Connecticut Health Center, Farmington, Connecticut
| | - Xiaonan Xin
- Center for Regenerative Medicine and Skeletal Development and School of Dental Medicine, University of Connecticut Health Center, Farmington, Connecticut
| | - Sumit Yadav
- Department of Orthodontics, School of Dental Medicine, University of Connecticut Health Center, Farmington, Connecticut
| | - David W. Rowe
- Center for Regenerative Medicine and Skeletal Development and School of Dental Medicine, University of Connecticut Health Center, Farmington, Connecticut
| | - Mei Wei
- Department of Materials Science and Engineering, Institute of Materials Science, University of Connecticut, Storrs, Connecticut
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16
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Featherall J, Robey PG, Rowe DW. Continuing Challenges in Advancing Preclinical Science in Skeletal Cell-Based Therapies and Tissue Regeneration. J Bone Miner Res 2018; 33:1721-1728. [PMID: 30133922 PMCID: PMC6691896 DOI: 10.1002/jbmr.3578] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/09/2018] [Revised: 08/17/2018] [Accepted: 08/17/2018] [Indexed: 12/28/2022]
Abstract
Cell-based therapies hold much promise for musculoskeletal medicine; however, this rapidly growing field faces a number of challenges. Few of these therapies have proven clinical benefit, and an insufficient regulatory environment has allowed for widespread clinical implementation without sufficient evidence of efficacy. The technical and biological complexity of cell-based therapies has contributed to difficulties with reproducibility and mechanistic clarity. In order to aid in addressing these challenges, we aim to clarify the key issues in the preclinical cell therapy field, and to provide a conceptual framework for advancing the state of the science. Broadly, these suggestions relate to: (i) delineating cell-therapy types and moving away from "catch-all" terms such as "stem cell" therapies; (ii) clarifying descriptions of cells and their processing; and (iii) increasing the standard of in vivo evaluation of cell-based therapy experiments to determining cell fates. Further, we provide an overview of methods for experimental evaluation, data sharing, and professional society participation that would be instrumental in advancing this field. © 2018 American Society for Bone and Mineral Research.
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Affiliation(s)
- Joseph Featherall
- Cleveland Clinic Lerner College of Medicine, Cleveland, OH, USA.,Medical Research Scholars Program, Clinical Center, National Institutes of Health, Department of Health and Human Services, Bethesda MD, USA.,Skeletal Biology Section, National Institute of Dental and Craniofacial Research, National Institutes of Health, Department of Health and Human Services, Bethesda MD, USA
| | - Pamela G Robey
- Skeletal Biology Section, National Institute of Dental and Craniofacial Research, National Institutes of Health, Department of Health and Human Services, Bethesda MD, USA
| | - David W Rowe
- Center for Regenerative Medicine and Skeletal Development, UConn School of Dental Medicine, Farmington, CT, USA
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17
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Rowe DW, Adams DJ, Hong SH, Zhang C, Shin DG, Renata Rydzik C, Chen L, Wu Z, Garland G, Godfrey DA, Sundberg JP, Ackert-Bicknell C. Screening Gene Knockout Mice for Variation in Bone Mass: Analysis by μCT and Histomorphometry. Curr Osteoporos Rep 2018; 16:77-94. [PMID: 29508144 DOI: 10.1007/s11914-018-0421-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
PURPOSE OF REVIEW The international mouse phenotyping consortium (IMPC) is producing defined gene knockout mouse lines. Here, a phenotyping program is presented that is based on micro-computed tomography (μCT) assessment of distal femur and vertebra. Lines with significant variation undergo a computer-based bone histomorphometric analysis. RECENT FINDINGS Of the 220 lines examined to date, approximately 15% have a significant variation (high or low) by μCT, most of which are not identified by the IMPC screen. Significant dimorphism between the sexes and bone compartments adds to the complexity of the skeletal findings. The μCT information that is posted at www.bonebase.org can group KOMP lines with similar morphological features. The histological data is presented in a graphic form that associates the cellular features with a specific anatomic group. The web portal presents a bone-centric view appropriate for the skeletal biologist/clinician to organize and understand the large number of genes that can influence skeletal health. Cataloging the relative severity of each variant is the first step towards compiling the dataset necessary to appreciate the full polygenic basis of degenerative bone disease.
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Affiliation(s)
- David W Rowe
- Regenerative Medicine and Skeletal Development, Department of Reconstructive Sciences, Biomaterials and Skeletal Development, School of Dental Medicine, University of Connecticut Health, Farmington, CT, 06030, USA.
| | - Douglas J Adams
- Department of Orthopaedic Surgery, School of Medicine, University of Connecticut Health, Farmington, CT, 06030, USA
| | - Seung-Hyun Hong
- Computer Science and Engineering, School of Engineering, University of Connecticut, Storrs, CT, 06269, USA
| | - Caibin Zhang
- Regenerative Medicine and Skeletal Development, Department of Reconstructive Sciences, Biomaterials and Skeletal Development, School of Dental Medicine, University of Connecticut Health, Farmington, CT, 06030, USA
| | - Dong-Guk Shin
- Computer Science and Engineering, School of Engineering, University of Connecticut, Storrs, CT, 06269, USA
| | - C Renata Rydzik
- Department of Orthopaedic Surgery, School of Medicine, University of Connecticut Health, Farmington, CT, 06030, USA
| | - Li Chen
- Regenerative Medicine and Skeletal Development, Department of Reconstructive Sciences, Biomaterials and Skeletal Development, School of Dental Medicine, University of Connecticut Health, Farmington, CT, 06030, USA
| | - Zhihua Wu
- Regenerative Medicine and Skeletal Development, Department of Reconstructive Sciences, Biomaterials and Skeletal Development, School of Dental Medicine, University of Connecticut Health, Farmington, CT, 06030, USA
| | | | - Dana A Godfrey
- Center for Musculoskeletal Research, Department of Orthopaedics and Rehabilitation, University of Rochester School of Medicine, Rochester, NY, 14642, USA
| | | | - Cheryl Ackert-Bicknell
- Center for Musculoskeletal Research, Department of Orthopaedics and Rehabilitation, University of Rochester School of Medicine, Rochester, NY, 14642, USA
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Gohil SV, Wang L, Rowe DW, Nair LS. Spatially controlled rhBMP-2 mediated calvarial bone formation in a transgenic mouse model. Int J Biol Macromol 2018; 106:1159-1165. [DOI: 10.1016/j.ijbiomac.2017.08.116] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2017] [Revised: 08/18/2017] [Accepted: 08/21/2017] [Indexed: 11/30/2022]
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19
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Decker RS, Um HB, Dyment NA, Cottingham N, Usami Y, Enomoto-Iwamoto M, Kronenberg MS, Maye P, Rowe DW, Koyama E, Pacifici M. Cell origin, volume and arrangement are drivers of articular cartilage formation, morphogenesis and response to injury in mouse limbs. Dev Biol 2017; 426:56-68. [PMID: 28438606 DOI: 10.1016/j.ydbio.2017.04.006] [Citation(s) in RCA: 87] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2016] [Revised: 04/13/2017] [Accepted: 04/17/2017] [Indexed: 11/16/2022]
Abstract
Limb synovial joints are composed of distinct tissues, but it is unclear which progenitors produce those tissues and how articular cartilage acquires its functional postnatal organization characterized by chondrocyte columns, zone-specific cell volumes and anisotropic matrix. Using novel Gdf5CreERT2 (Gdf5-CE), Prg4-CE and Dkk3-CE mice mated to R26-Confetti or single-color reporters, we found that knee joint progenitors produced small non-migratory progenies and distinct local tissues over prenatal and postnatal time. Stereological imaging and quantification indicated that the columns present in juvenile-adult tibial articular cartilage consisted of non-daughter, partially overlapping lineage cells, likely reflecting cell rearrangement and stacking. Zone-specific increases in cell volume were major drivers of tissue thickening, while cell proliferation or death played minor roles. Second harmonic generation with 2-photon microscopy showed that the collagen matrix went from being isotropic and scattered at young stages to being anisotropic and aligned along the cell stacks in adults. Progenitor tracing at prenatal or juvenile stages showed that joint injury provoked a massive and rapid increase in synovial Prg4+ and CD44+/P75+ cells some of which filling the injury site, while neighboring chondrocytes appeared unresponsive. Our data indicate that local cell populations produce distinct joint tissues and that articular cartilage growth and zonal organization are mainly brought about by cell volume expansion and topographical cell rearrangement. Synovial Prg4+ lineage progenitors are exquisitely responsive to acute injury and may represent pioneers in joint tissue repair.
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Affiliation(s)
- Rebekah S Decker
- Division of Orthopaedic Surgery, The Children's Hospital of Philadelphia, Philadelphia, PA 19104, United States.
| | - Hyo-Bin Um
- Division of Orthopaedic Surgery, The Children's Hospital of Philadelphia, Philadelphia, PA 19104, United States
| | - Nathaniel A Dyment
- Department of Reconstructive Sciences, School of Dental Medicine, University of Connecticut Health Center, Farmington, CT 06030, United States
| | - Naiga Cottingham
- Division of Orthopaedic Surgery, The Children's Hospital of Philadelphia, Philadelphia, PA 19104, United States
| | - Yu Usami
- Division of Orthopaedic Surgery, The Children's Hospital of Philadelphia, Philadelphia, PA 19104, United States
| | - Motomi Enomoto-Iwamoto
- Division of Orthopaedic Surgery, The Children's Hospital of Philadelphia, Philadelphia, PA 19104, United States
| | - Mark S Kronenberg
- Department of Reconstructive Sciences, School of Dental Medicine, University of Connecticut Health Center, Farmington, CT 06030, United States
| | - Peter Maye
- Department of Reconstructive Sciences, School of Dental Medicine, University of Connecticut Health Center, Farmington, CT 06030, United States
| | - David W Rowe
- Department of Reconstructive Sciences, School of Dental Medicine, University of Connecticut Health Center, Farmington, CT 06030, United States
| | - Eiki Koyama
- Division of Orthopaedic Surgery, The Children's Hospital of Philadelphia, Philadelphia, PA 19104, United States
| | - Maurizio Pacifici
- Division of Orthopaedic Surgery, The Children's Hospital of Philadelphia, Philadelphia, PA 19104, United States.
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20
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Siu SY, Dyment NA, Rowe DW, Sundberg JP, Uitto J, Li Q. Variable patterns of ectopic mineralization in Enpp1asj-2J mice, a model for generalized arterial calcification of infancy. Oncotarget 2016; 7:83837-83842. [PMID: 27863377 PMCID: PMC5341293 DOI: 10.18632/oncotarget.13335] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2016] [Accepted: 11/02/2016] [Indexed: 11/25/2022] Open
Abstract
Generalized arterial calcification of infancy (GACI) is an autosomal recessive disorder characterized by early onset of extensive mineralization of the cardiovascular system. The classical forms of GACI are caused by mutations in the ENPP1 gene, encoding a membrane-bound pyrophosphatase/phosphodiesterase that hydrolyzes ATP to AMP and inorganic pyrophosphate. The asj-2J mouse harboring a spontaneous mutation in the Enpp1 gene has been characterized as a model for GACI. These mutant mice develop ectopic mineralization in skin and vascular connective tissues as well as in cartilage and collagen-rich tendons and ligaments. This study examined in detail the temporal ectopic mineralization phenotype of connective tissues in this mouse model, utilizing a novel cryo-histological method that does not require decalcification of bones. The wild type, heterozygous, and homozygous mice were administered fluorescent mineralization labels at 4 weeks (calcein), 10 weeks (alizarin complexone), and 11 weeks of age (demeclocycline). Twenty-four hours later, outer ears, muzzle skin, trachea, aorta, shoulders, and vertebrae were collected from these mice and examined for progression of mineralization. The results revealed differential timeline for disease initiation and progression in various tissues of this mouse model. It also highlights the advantages of cryo-histological fluorescent imaging technique to study mineral deposition in mouse models of ectopic mineralization disorders.
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Affiliation(s)
- Sarah Y Siu
- Department of Dermatology and Cutaneous Biology, The Sidney Kimmel Medical College and The PXE International Center of Excellence in Research and Clinical Care, Thomas Jefferson University, Philadelphia, PA, USA
| | - Nathaniel A Dyment
- Center for Regenerative Medicine and Skeletal Development, University of Connecticut Health Center, Farmington, CT, USA
| | - David W Rowe
- Center for Regenerative Medicine and Skeletal Development, University of Connecticut Health Center, Farmington, CT, USA
| | | | - Jouni Uitto
- Department of Dermatology and Cutaneous Biology, The Sidney Kimmel Medical College and The PXE International Center of Excellence in Research and Clinical Care, Thomas Jefferson University, Philadelphia, PA, USA.,Jefferson Institute of Molecular Medicine, Thomas Jefferson University, Philadelphia, PA, USA
| | - Qiaoli Li
- Department of Dermatology and Cutaneous Biology, The Sidney Kimmel Medical College and The PXE International Center of Excellence in Research and Clinical Care, Thomas Jefferson University, Philadelphia, PA, USA.,Jefferson Institute of Molecular Medicine, Thomas Jefferson University, Philadelphia, PA, USA
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21
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Yoshida R, Alaee F, Dyrna F, Kronenberg MS, Maye P, Kalajzic I, Rowe DW, Mazzocca AD, Dyment NA. Murine supraspinatus tendon injury model to identify the cellular origins of rotator cuff healing. Connect Tissue Res 2016; 57:507-515. [PMID: 27184388 PMCID: PMC5149426 DOI: 10.1080/03008207.2016.1189910] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
UNLABELLED Purpose of this study: To elucidate the origin of cell populations that contribute to rotator cuff healing, we developed a mouse surgical model where a full-thickness, central detachment is created in the supraspinatus. MATERIALS AND METHODS Three different inducible Cre transgenic mice with Ai9-tdTomato reporter expression (PRG4-9, αSMA-9, and AGC-9) were used to label different cell populations in the shoulder. The defect was created surgically in the supraspinatus. The mice were injected with tamoxifen at surgery to label the cells and sacrificed at 1, 2, and 5 weeks postoperatively. Frozen sections were fluorescently imaged then stained with Toluidine Blue and re-imaged. RESULTS Three notable changes were apparent postoperatively. (1) A long thin layer of tissue formed on the bursal side overlying the supraspinatus tendon. (2) The tendon proximal to the defect initially became hypercellular and disorganized. (3) The distal stump at the insertion underwent minimal remodeling. In the uninjured shoulder, tdTomato expression was seen in the tendon midsubstance and paratenon cell on the bursal side in PRG4-9, in paratenon, blood vessels, and periosteum of acromion in SMA-9, and in articular cartilage, unmineralized fibrocartilage of supraspinatus enthesis, and acromioclavicular joint in AGC-9 mice. In the injured PRG4-9 and SMA-9 mice, the healing tissues contained an abundant number of tdTomato+ cells, while minimal contribution of tdTomato+ cells was seen in AGC-9 mice. CONCLUSIONS The study supports the importance of the bursal side of the tendon to rotator cuff healing and PRG4 and αSMA may be markers for these progenitor cells.
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Affiliation(s)
- Ryu Yoshida
- Department of Orthopaedic Surgery, University of Connecticut Health Center, Farmington, CT
| | - Farhang Alaee
- Department of Orthopaedic Surgery, University of Connecticut Health Center, Farmington, CT
| | - Felix Dyrna
- Department of Orthopaedic Surgery, University of Connecticut Health Center, Farmington, CT
| | - Mark S. Kronenberg
- Department of Reconstructive Sciences, University of Connecticut Health Center, Farmington, CT
| | - Peter Maye
- Department of Reconstructive Sciences, University of Connecticut Health Center, Farmington, CT
| | - Ivo Kalajzic
- Department of Reconstructive Sciences, University of Connecticut Health Center, Farmington, CT
| | - David W Rowe
- Department of Reconstructive Sciences, University of Connecticut Health Center, Farmington, CT
| | - Augustus D. Mazzocca
- Department of Orthopaedic Surgery, University of Connecticut Health Center, Farmington, CT
| | - Nathaniel A Dyment
- Department of Reconstructive Sciences, University of Connecticut Health Center, Farmington, CT
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22
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Mori Y, Adams D, Hagiwara Y, Yoshida R, Kamimura M, Itoi E, Rowe DW. Identification of a progenitor cell population destined to form fracture fibrocartilage callus in Dickkopf-related protein 3-green fluorescent protein reporter mice. J Bone Miner Metab 2016; 34:606-614. [PMID: 26369320 DOI: 10.1007/s00774-015-0711-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/18/2015] [Accepted: 08/02/2015] [Indexed: 01/23/2023]
Abstract
Fracture healing is a complex biological process involving the proliferation of mesenchymal progenitor cells, and chondrogenic, osteogenic, and angiogenic differentiation. The mechanisms underlying the proliferation and differentiation of mesenchymal progenitor cells remain unclear. Here, we demonstrate Dickkopf-related protein 3 (Dkk3) expression in periosteal cells using Dkk3-green fluorescent protein reporter mice. We found that proliferation of mesenchymal progenitor cells began in the periosteum, involving Dkk3-positive cell proliferation near the fracture site. In addition, Dkk3 was expressed in fibrocartilage cells together with smooth muscle α-actin and Col3.6 in the early phase of fracture healing as a cell marker of fibrocartilage cells. Dkk3 was not expressed in mature chondrogenic cells or osteogenic cells. Transient expression of Dkk3 disappeared in the late phase of fracture healing, except in the superficial periosteal area of fracture callus. The Dkk3 expression pattern differed in newly formed type IV collagen positive blood vessels and the related avascular tissue. This is the first report that shows Dkk3 expression in the periosteum at a resting state and in fibrocartilage cells during the fracture healing process, which was associated with smooth muscle α-actin and Col3.6 expression in mesenchymal progenitor cells. These fluorescent mesenchymal lineage cells may be useful for future studies to better understand fracture healing.
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Affiliation(s)
- Yu Mori
- Center for Regenerative Medicine and Skeletal Biology, Department of Reconstructive Sciences, School of Dental Medicine, University of Connecticut Health Center, Farmington, CT, USA.
- Department of Orthopaedic Surgery, Graduate School of Tohoku University, 1-1 Seiryomachi, Aobaku, Sendai, Miyagi, 980-8574, Japan.
| | - Douglas Adams
- Center for Regenerative Medicine and Skeletal Biology, Department of Reconstructive Sciences, School of Dental Medicine, University of Connecticut Health Center, Farmington, CT, USA
| | - Yusuke Hagiwara
- Center for Regenerative Medicine and Skeletal Biology, Department of Reconstructive Sciences, School of Dental Medicine, University of Connecticut Health Center, Farmington, CT, USA
| | - Ryu Yoshida
- Center for Regenerative Medicine and Skeletal Biology, Department of Reconstructive Sciences, School of Dental Medicine, University of Connecticut Health Center, Farmington, CT, USA
| | - Masayuki Kamimura
- Department of Orthopaedic Surgery, Graduate School of Tohoku University, 1-1 Seiryomachi, Aobaku, Sendai, Miyagi, 980-8574, Japan
| | - Eiji Itoi
- Department of Orthopaedic Surgery, Graduate School of Tohoku University, 1-1 Seiryomachi, Aobaku, Sendai, Miyagi, 980-8574, Japan
| | - David W Rowe
- Center for Regenerative Medicine and Skeletal Biology, Department of Reconstructive Sciences, School of Dental Medicine, University of Connecticut Health Center, Farmington, CT, USA
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23
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Dyment NA, Jiang X, Chen L, Hong SH, Adams DJ, Ackert-Bicknell C, Shin DG, Rowe DW. High-Throughput, Multi-Image Cryohistology of Mineralized Tissues. J Vis Exp 2016. [PMID: 27684089 DOI: 10.3791/54468] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
There is an increasing need for efficient phenotyping and histopathology of a variety of tissues. This phenotyping need is evident with the ambitious projects to disrupt every gene in the mouse genome. The research community needs rapid and inexpensive means to phenotype tissues via histology. Histological analyses of skeletal tissues are often time consuming and semi-quantitative at best, regularly requiring subjective interpretation of slides from trained individuals. Here, we present a cryohistological paradigm for efficient and inexpensive phenotyping of mineralized tissues. First, we present a novel method of tape-stabilized cryosectioning that preserves the morphology of mineralized tissues. These sections are then adhered rigidly to glass slides and imaged repeatedly over several rounds of staining. The resultant images are then aligned either manually or via computer software to yield composite stacks of several layered images. The protocol allows for co-localization of numerous molecular signals to specific cells within a given section. In addition, these fluorescent signals can be quantified objectively via computer software. This protocol overcomes many of the shortcomings associated with histology of mineralized tissues and can serve as a platform for high-throughput, high-content phenotyping of musculoskeletal tissues moving forward.
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Affiliation(s)
- Nathaniel A Dyment
- Department of Reconstructive Sciences, University of Connecticut Health Center;
| | - Xi Jiang
- Department of Reconstructive Sciences, University of Connecticut Health Center
| | - Li Chen
- Department of Reconstructive Sciences, University of Connecticut Health Center
| | - Seung-Hyun Hong
- Department of Computer Science and Engineering, University of Connecticut
| | - Douglas J Adams
- Department of Orthopaedic Surgery, University of Connecticut Health Center
| | | | - Dong-Guk Shin
- Department of Computer Science and Engineering, University of Connecticut
| | - David W Rowe
- Department of Reconstructive Sciences, University of Connecticut Health Center;
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24
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Matic I, Matthews BG, Wang X, Dyment NA, Worthley DL, Rowe DW, Grcevic D, Kalajzic I. Quiescent Bone Lining Cells Are a Major Source of Osteoblasts During Adulthood. Stem Cells 2016; 34:2930-2942. [PMID: 27507737 DOI: 10.1002/stem.2474] [Citation(s) in RCA: 111] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2016] [Revised: 06/15/2016] [Accepted: 07/05/2016] [Indexed: 12/23/2022]
Abstract
The in vivo origin of bone-producing osteoblasts is not fully defined. Skeletal stem cells, a population of mesenchymal stem cells resident in the bone marrow compartment, are thought to act as osteoprogenitors during growth and adulthood. Quiescent bone lining cells (BLCs) have been suggested as a population capable of activation into mature osteoblasts. These cells were defined by location and their morphology and studies addressing their significance have been hampered by their inaccessibility, and lack of markers that would allow for their identification and tracing. Using lineage tracing models, we have observed labeled osteoblasts at time points extending beyond the reported lifespan for this cell type, suggesting continuous reactivation of BLCs. BLCs also make a major contribution to bone formation after osteoblast ablation, which includes the ability to proliferate. In contrast, mesenchymal progenitors labeled by Gremlin1 or alpha smooth muscle actin do not contribute to bone formation in this setting. BLC activation is inhibited by glucocorticoids, which represent a well-established cause of osteoporosis. BLCs express cell surface markers characteristic of mesenchymal stem/progenitors that are largely absent in osteoblasts including Sca1 and Leptin Receptor. BLCs also show different gene expression profiles to osteoblasts, including elevated expression of Mmp13, and osteoclast regulators RANKL and macrophage colony stimulating factor, and retain osteogenic potential upon transplantation. Our findings provide evidence that bone lining cells represent a major source of osteoblasts during adulthood. Stem Cells 2016;34:2930-2942.
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Affiliation(s)
- Igor Matic
- Department of Reconstructive Sciences, University of Connecticut Health Center, Farmington, Connecticut, USA
| | - Brya G Matthews
- Department of Reconstructive Sciences, University of Connecticut Health Center, Farmington, Connecticut, USA
| | - Xi Wang
- Department of Reconstructive Sciences, University of Connecticut Health Center, Farmington, Connecticut, USA
| | - Nathaniel A Dyment
- Department of Reconstructive Sciences, University of Connecticut Health Center, Farmington, Connecticut, USA
| | - Daniel L Worthley
- Department of Medicine and Cancer Theme, University of Adelaide & SAHMRI, Adelaide, South Australia, Australia
| | - David W Rowe
- Department of Reconstructive Sciences, University of Connecticut Health Center, Farmington, Connecticut, USA
| | - Danka Grcevic
- Department of Physiology and Immunology, School of Medicine, University of Zagreb, Zagreb, Croatia
| | - Ivo Kalajzic
- Department of Reconstructive Sciences, University of Connecticut Health Center, Farmington, Connecticut, USA
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25
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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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26
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Utreja A, Dyment NA, Yadav S, Villa MM, Li Y, Jiang X, Nanda R, Rowe DW. Cell and matrix response of temporomandibular cartilage to mechanical loading. Osteoarthritis Cartilage 2016; 24:335-44. [PMID: 26362410 PMCID: PMC4757844 DOI: 10.1016/j.joca.2015.08.010] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/10/2015] [Revised: 07/01/2015] [Accepted: 08/18/2015] [Indexed: 02/02/2023]
Abstract
OBJECTIVES The generation of transgenic mice expressing green fluorescent proteins (GFPs) has greatly aided our understanding of the development of connective tissues such as bone and cartilage. Perturbation of a biological system such as the temporomandibular joint (TMJ) within its adaptive remodeling capacity is particularly useful in analyzing cellular lineage progression. The objectives of this study were to determine: (i) if GFP reporters expressed in the TMJ indicate the different stages of cell maturation in fibrocartilage and (ii) how mechanical loading affects cellular response in different regions of the cartilage. DESIGN/METHODS Four-week-old transgenic mice harboring combinations of fluorescent reporters (Dkk3-eGFP, Col1a1(3.6 kb)-GFPcyan, Col1a1(3.6 kb)-GFPtpz, Col2a1-GFPcyan, and Col10a1-RFPcherry) were used to analyze the expression pattern of transgenes in the mandibular condylar cartilage (MCC). To study the effect of TMJ loading, animals were subjected to forced mouth opening with custom springs exerting 50 g force for 1 h/day for 5 days. Dynamic mineralization and cellular proliferation (EdU-labeling) were assessed in loaded vs control mice. RESULTS Dkk3 expression was seen in the superficial zone of the MCC, followed by Col1 in the cartilage zone, Col2 in the prehypertrophic zone, and Col10 in the hypertrophic zone at and below the tidemark. TMJ loading increased expression of the GFP reporters and EdU-labeling of cells in the cartilage, resulting in a thickness increase of all layers of the cartilage. In addition, mineral apposition increased resulting in Col10 expression by unmineralized cells above the tidemark. CONCLUSION The TMJ responded to static loading by forming thicker cartilage through adaptive remodeling.
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Affiliation(s)
- A Utreja
- Department of Orthodontics and Oral Facial Genetics, Indiana University School of Dentistry, Indianapolis, IN 46202, USA
| | - N A Dyment
- Center for Regenerative Medicine and Skeletal Development, School of Dental Medicine, University of Connecticut Health Center, Farmington, CT 06032, USA
| | - S Yadav
- Department of Orthodontics, School of Dental Medicine, University of Connecticut Health Center, Farmington, CT 06032, USA
| | - M M Villa
- Department of Materials Science and Engineering, University of Connecticut, Storrs, CT 06269, USA
| | - Y Li
- Biology Department, College of Arts and Sciences, University of Hartford, West Hartford, CT 06117, USA
| | - X Jiang
- Center for Regenerative Medicine and Skeletal Development, School of Dental Medicine, University of Connecticut Health Center, Farmington, CT 06032, USA
| | - R Nanda
- Department of Orthodontics, School of Dental Medicine, University of Connecticut Health Center, Farmington, CT 06032, USA
| | - D W Rowe
- Center for Regenerative Medicine and Skeletal Development, School of Dental Medicine, University of Connecticut Health Center, Farmington, CT 06032, USA.
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27
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Gohil SV, Kuo C, Adams DJ, Maye P, Rowe DW, Nair LS. Evaluation of the donor cell contribution in rh
BMP
‐2 mediated bone formation with chitosan thermogels using fluorescent protein reporter mice. J Biomed Mater Res A 2016; 104:928-41. [DOI: 10.1002/jbm.a.35634] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2015] [Revised: 11/18/2015] [Accepted: 12/18/2015] [Indexed: 12/13/2022]
Affiliation(s)
- Shalini V. Gohil
- Department of Orthopaedic SurgeryUConn HealthFarmington Connecticut06030
- Institute for Regenerative Engineering, The Raymond Beverly Sackler Center for Biomedical, Biological, Physical and Engineering SciencesUConn HealthFarmington Connecticut06030
| | - Chia‐Ling Kuo
- Connecticut Institute for Clinical and Translational Science, Institute for Systems Genomics, University of ConnecticutFarmington Connecticut06030
| | - Douglas J. Adams
- Department of Orthopaedic SurgeryUConn HealthFarmington Connecticut06030
| | - Peter Maye
- Center for Regenerative Medicine and Skeletal Development, Department of Reconstructive Sciences, School of Dental MedicineUConn HealthFarmington Connecticut06030
| | - David W. Rowe
- Center for Regenerative Medicine and Skeletal Development, Department of Reconstructive Sciences, School of Dental MedicineUConn HealthFarmington Connecticut06030
| | - Lakshmi S. Nair
- Department of Orthopaedic SurgeryUConn HealthFarmington Connecticut06030
- Institute for Regenerative Engineering, The Raymond Beverly Sackler Center for Biomedical, Biological, Physical and Engineering SciencesUConn HealthFarmington Connecticut06030
- Departments of Material Science and Engineering, Biomedical Engineering and Institute of Material ScienceUniversity of ConnecticutStorrs Connecticut06269
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Mikael PE, Xin X, Urso M, Jiang X, Wang L, Barnes B, Lichtler AC, Rowe DW, Nukavarapu SP. A potential translational approach for bone tissue engineering through endochondral ossification. Annu Int Conf IEEE Eng Med Biol Soc 2015; 2014:3925-8. [PMID: 25570850 DOI: 10.1109/embc.2014.6944482] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Bone defect repair is a significant clinical challenge in orthopedic surgery. Despite tremendous efforts, the majority of the current bone tissue engineering strategies depend on bone formation via intramembranous ossification (IO), which often results in poor vascularization and limited-area bone regeneration. Recently, there has been increasing interest in exploring bone regeneration through a cartilage-mediated process similar to endochondral ossification (EO). This method is advantageous because long bones are originally developed through EO and moreover, vascularization is an inherent step of this process. Therefore, it may be possible to effectively employ the EO method for the repair and regeneration of large and segmental bone defects. Although a number of studies have demonstrated engineered bone formation through EO, there are no approaches aiming for their clinical translation. In this study, we propose a strategy modeled after the U.S. Food and Drug Administration (FDA) approved autologus chondrocyte implantation (ACI) procedure. In its implementation, we concentrated human bone marrow aspirate via a minimally manipulated process and demonstrated the potential of human bone marrow derived cells for in vitro pre-cartilage template formation and bone regeneration in vivo.
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Wang YH, Nemati R, Anstadt E, Liu Y, Son Y, Zhu Q, Yao X, Clark RB, Rowe DW, Nichols FC. Serine dipeptide lipids of Porphyromonas gingivalis inhibit osteoblast differentiation: Relationship to Toll-like receptor 2. Bone 2015; 81:654-661. [PMID: 26409254 PMCID: PMC4641032 DOI: 10.1016/j.bone.2015.09.008] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/13/2015] [Revised: 09/15/2015] [Accepted: 09/19/2015] [Indexed: 11/16/2022]
Abstract
Porphyromonas gingivalis is a periodontal pathogen strongly associated with loss of attachment and supporting bone for teeth. We have previously shown that the total lipid extract of P. gingivalis inhibits osteoblast differentiation through engagement of Toll-like receptor 2 (TLR2) and that serine dipeptide lipids of P. gingivalis engage both mouse and human TLR2. The purpose of the present investigation was to determine whether these serine lipids inhibit osteoblast differentiation in vitro and in vivo and whether TLR2 engagement is involved. Osteoblasts were obtained from calvaria of wild type or TLR2 knockout mouse pups that also express the Col2.3GFP transgene. Two classes of serine dipeptide lipids, termed Lipid 654 and Lipid 430, were tested. Osteoblast differentiation was monitored by cell GFP fluorescence and osteoblast gene expression and osteoblast function was monitored as von Kossa stained mineral deposits. Osteoblast differentiation and function were evaluated in calvarial cell cultures maintained for 21 days. Lipid 654 significantly inhibited GFP expression, osteoblast gene expression and mineral nodule formation and this inhibition was dependent on TLR2 engagement. Lipid 430 also significantly inhibited GFP expression, osteoblast gene expression and mineral nodule formation but these effects were only partially attributed to engagement of TLR2. More importantly, Lipid 430 stimulated TNF-α and RANKL gene expression in wild type cells but not in TLR2 knockout cells. Finally, osteoblast cultures were observed to hydrolyze Lipid 654 to Lipid 430 and this likely occurs through elevated PLA2 activity in the cultured cells. In conclusion, our results show that serine dipeptide lipids of P. gingivalis inhibit osteoblast differentiation and function at least in part through engagement of TLR2. The Lipid 430 serine class also increased the expression of genes that could increase osteoclast activity. We conclude that Lipid 654 and Lipid 430 have the potential to promote TLR2-dependent bone loss as is reported in experimental periodontitis following oral infection with P. gingivalis. These results also support the conclusion that serine dipeptide lipids are involved in alveolar bone loss in chronic periodontitis.
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Affiliation(s)
- Yu-Hsiung Wang
- Department of Craniofacial Sciences, University of Connecticut School of Dental Medicine, Farmington, CT 06030, USA
| | - Reza Nemati
- From the Department of Chemistry, University of Connecticut, Storrs, CT 06269-3060, USA
| | - Emily Anstadt
- Department of Immunology and Medicine, University of Connecticut School of Medicine, Farmington, CT 06030, USA
| | - Yaling Liu
- Department of Oral Health and Diagnostic Sciences, University of Connecticut School of Dental Medicine, Farmington, CT 06030, USA
| | - Young Son
- Department of Oral Health and Diagnostic Sciences, University of Connecticut School of Dental Medicine, Farmington, CT 06030, USA
| | - Qiang Zhu
- Department of Oral Health and Diagnostic Sciences, University of Connecticut School of Dental Medicine, Farmington, CT 06030, USA
| | - Xudong Yao
- From the Department of Chemistry, University of Connecticut, Storrs, CT 06269-3060, USA; Institute for Systems Genomics, University of Connecticut, Storrs, CT 06269, USA
| | - Robert B Clark
- Department of Immunology and Medicine, University of Connecticut School of Medicine, Farmington, CT 06030, USA
| | - David W Rowe
- Department of Reconstuctive Sciences, University of Connecticut School of Dental Medicine, Farmington, CT 06030, USA
| | - Frank C Nichols
- Department of Oral Health and Diagnostic Sciences, University of Connecticut School of Dental Medicine, Farmington, CT 06030, USA.
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30
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Lalley AL, Dyment NA, Kazemi N, Kenter K, Gooch C, Rowe DW, Butler DL, Shearn JT. Improved biomechanical and biological outcomes in the MRL/MpJ murine strain following a full-length patellar tendon injury. J Orthop Res 2015; 33:1693-703. [PMID: 25982892 PMCID: PMC5007538 DOI: 10.1002/jor.22928] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/24/2014] [Accepted: 04/10/2015] [Indexed: 02/06/2023]
Abstract
Musculoskeletal injuries greatly affect the U.S. population and current clinical approaches fail to restore long-term native tissue structure and function. Tissue engineering is a strategy advocated to improve tendon healing; however, the field still needs to establish biological benchmarks for assessing the effectiveness of tissue-engineered structures. Investigating superior healing models, such as the MRL/MpJ, offers the opportunity to first characterize successful healing and then apply experimental findings to tissue-engineered therapies. This study seeks to evaluate the MRL/MpJ's healing response following a central patellar tendon injury compared to wildtype. Gene expression and histology were assessed at 3, 7, and 14 days following injury and mechanical properties were measured at 2, 5, and 8 weeks. Native patellar tendon biological and mechanical properties were not different between strains. Following injury, the MRL/MpJ displayed increased mechanical properties between 5 and 8 weeks; however, early tenogenic expression patterns were not different between the strains. Furthermore, expression of the cyclin-dependent kinase inhibitor, p21, was not different between strains, suggesting an alternative mechanism may be driving the healing response. Future studies will investigate collagen structure and alignment of the repair tissue and characterize the complete healing transcriptome to identify mechanisms driving the MRL/MpJ response.
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Affiliation(s)
- Andrea L. Lalley
- Biomedical Engineering Program, College of Engineering and Applied Science, University of Cincinnati, Cincinnati, Ohio
| | - Nathaniel A. Dyment
- Department of Reconstructive Sciences, College of Dental Medicine, University of Connecticut Health Center, Farmington, Connecticut
| | - Namdar Kazemi
- Department of Orthopaedic Surgery, College of Medicine, University of Cincinnati, Cincinnati, Ohio
| | - Keith Kenter
- Department of Orthopaedic Surgery, College of Medicine, University of Cincinnati, Cincinnati, Ohio
| | - Cynthia Gooch
- Biomedical Engineering Program, College of Engineering and Applied Science, University of Cincinnati, Cincinnati, Ohio
| | - David W. Rowe
- Department of Reconstructive Sciences, College of Dental Medicine, University of Connecticut Health Center, Farmington, Connecticut
| | - David L. Butler
- Biomedical Engineering Program, College of Engineering and Applied Science, University of Cincinnati, Cincinnati, Ohio
| | - Jason T. Shearn
- Biomedical Engineering Program, College of Engineering and Applied Science, University of Cincinnati, Cincinnati, Ohio
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31
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Zheng HF, Forgetta V, Hsu YH, Estrada K, Rosello-Diez A, Leo PJ, Dahia CL, Park-Min KH, Tobias JH, Kooperberg C, Kleinman A, Styrkarsdottir U, Liu CT, Uggla C, Evans DS, Nielson CM, Walter K, Pettersson-Kymmer U, McCarthy S, Eriksson J, Kwan T, Jhamai M, Trajanoska K, Memari Y, Min J, Huang J, Danecek P, Wilmot B, Li R, Chou WC, Mokry LE, Moayyeri A, Claussnitzer M, Cheng CH, Cheung W, Medina-Gómez C, Ge B, Chen SH, Choi K, Oei L, Fraser J, Kraaij R, Hibbs MA, Gregson CL, Paquette D, Hofman A, Wibom C, Tranah GJ, Marshall M, Gardiner BB, Cremin K, Auer P, Hsu L, Ring S, Tung JY, Thorleifsson G, Enneman AW, van Schoor NM, de Groot LCPGM, van der Velde N, Melin B, Kemp JP, Christiansen C, Sayers A, Zhou Y, Calderari S, van Rooij J, Carlson C, Peters U, Berlivet S, Dostie J, Uitterlinden AG, Williams SR, Farber C, Grinberg D, LaCroix AZ, Haessler J, Chasman DI, Giulianini F, Rose LM, Ridker PM, Eisman JA, Nguyen TV, Center JR, Nogues X, Garcia-Giralt N, Launer LL, Gudnason V, Mellström D, Vandenput L, Amin N, van Duijn CM, Karlsson MK, Ljunggren Ö, Svensson O, Hallmans G, Rousseau F, Giroux S, Bussière J, Arp PP, Koromani F, Prince RL, Lewis JR, Langdahl BL, Hermann AP, Jensen JEB, Kaptoge S, Khaw KT, Reeve J, Formosa MM, Xuereb-Anastasi A, Åkesson K, McGuigan FE, Garg G, Olmos JM, Zarrabeitia MT, Riancho JA, Ralston SH, Alonso N, Jiang X, Goltzman D, Pastinen T, Grundberg E, Gauguier D, Orwoll ES, Karasik D, Davey-Smith G, Smith AV, Siggeirsdottir K, Harris TB, Zillikens MC, van Meurs JBJ, Thorsteinsdottir U, Maurano MT, Timpson NJ, Soranzo N, Durbin R, Wilson SG, Ntzani EE, Brown MA, Stefansson K, Hinds DA, Spector T, Cupples LA, Ohlsson C, Greenwood CMT, Jackson RD, Rowe DW, Loomis CA, Evans DM, Ackert-Bicknell CL, Joyner AL, Duncan EL, Kiel DP, Rivadeneira F, Richards JB. Whole-genome sequencing identifies EN1 as a determinant of bone density and fracture. Nature 2015; 526:112-117. [PMID: 26367794 PMCID: PMC4755714 DOI: 10.1038/nature14878 10.1016/j.ajhg.2017.12.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2014] [Accepted: 06/30/2015] [Indexed: 04/02/2024]
Abstract
The extent to which low-frequency (minor allele frequency (MAF) between 1-5%) and rare (MAF ≤ 1%) variants contribute to complex traits and disease in the general population is mainly unknown. Bone mineral density (BMD) is highly heritable, a major predictor of osteoporotic fractures, and has been previously associated with common genetic variants, as well as rare, population-specific, coding variants. Here we identify novel non-coding genetic variants with large effects on BMD (ntotal = 53,236) and fracture (ntotal = 508,253) in individuals of European ancestry from the general population. Associations for BMD were derived from whole-genome sequencing (n = 2,882 from UK10K (ref. 10); a population-based genome sequencing consortium), whole-exome sequencing (n = 3,549), deep imputation of genotyped samples using a combined UK10K/1000 Genomes reference panel (n = 26,534), and de novo replication genotyping (n = 20,271). We identified a low-frequency non-coding variant near a novel locus, EN1, with an effect size fourfold larger than the mean of previously reported common variants for lumbar spine BMD (rs11692564(T), MAF = 1.6%, replication effect size = +0.20 s.d., Pmeta = 2 × 10(-14)), which was also associated with a decreased risk of fracture (odds ratio = 0.85; P = 2 × 10(-11); ncases = 98,742 and ncontrols = 409,511). Using an En1(cre/flox) mouse model, we observed that conditional loss of En1 results in low bone mass, probably as a consequence of high bone turnover. We also identified a novel low-frequency non-coding variant with large effects on BMD near WNT16 (rs148771817(T), MAF = 1.2%, replication effect size = +0.41 s.d., Pmeta = 1 × 10(-11)). In general, there was an excess of association signals arising from deleterious coding and conserved non-coding variants. These findings provide evidence that low-frequency non-coding variants have large effects on BMD and fracture, thereby providing rationale for whole-genome sequencing and improved imputation reference panels to study the genetic architecture of complex traits and disease in the general population.
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Affiliation(s)
- Hou-Feng Zheng
- Departments of Medicine, Human Genetics, Epidemiology and Biostatistics, McGill University, Montréal H3A 1A2, Canada
- Department of Medicine, Lady Davis Institute for Medical Research, Jewish General Hospital, McGill University, Montréal H3T 1E2, Canada
| | - Vincenzo Forgetta
- Departments of Medicine, Human Genetics, Epidemiology and Biostatistics, McGill University, Montréal H3A 1A2, Canada
- Department of Medicine, Lady Davis Institute for Medical Research, Jewish General Hospital, McGill University, Montréal H3T 1E2, Canada
| | - Yi-Hsiang Hsu
- Institute for Aging Research, Hebrew SeniorLife, Boston, Massachusetts 02131, USA
- Department of Medicine, Harvard Medical School, Boston, Massachusetts 02115, USA
- Broad Institute of MIT and Harvard, Boston, Massachusetts 02115, USA
| | - Karol Estrada
- Department of Medicine, Harvard Medical School, Boston, Massachusetts 02115, USA
- Broad Institute of MIT and Harvard, Boston, Massachusetts 02115, USA
- Department of Internal Medicine, Erasmus Medical Center, Rotterdam 3015GE, The Netherlands
- Analytic and Translational Genetics Unit, Massachusetts General Hospital, Boston, Massachusetts 02114, USA
| | - Alberto Rosello-Diez
- Developmental Biology Program, Sloan Kettering Institute, New York, New York 10065, USA
| | - Paul J Leo
- The University of Queensland Diamantina Institute, Translational Research Institute, Princess Alexandra Hospital, Brisbane 4102, Australia
| | - Chitra L Dahia
- Department of Cell and Developmental Biology, Weill Cornell Medical College, New York, New York 10065, USA
- Tissue Engineering, Regeneration and Repair Program, Hospital for Special Surgery, New York 10021, USA
| | - Kyung Hyun Park-Min
- Rheumatology Divison, Hospital for Special Surgery New York, New York 10021, USA
| | - Jonathan H Tobias
- School of Clinical Science, University of Bristol, Bristol BS10 5NB, UK
- MRC Integrative Epidemiology Unit, University of Bristol, Bristol BS8 2BN, UK
| | | | - Aaron Kleinman
- Department of Research, 23andMe, Mountain View, California 94041, USA
| | | | - Ching-Ti Liu
- Department of Biostatistics, Boston University School of Public Health, Boston, Massachusetts 02118, USA
| | - Charlotta Uggla
- Centre for Bone and Arthritis Research, Department of Internal Medicine and Clinical Nutrition, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg S-413 45, Sweden
| | - Daniel S Evans
- California Pacific Medical Center Research Institute, San Francisco, California 94158, USA
| | - Carrie M Nielson
- Department of Public Health and Preventive Medicine, Oregon Health &Science University, Portland, Oregon 97239, USA
- Bone &Mineral Unit, Oregon Health &Science University, Portland, Oregon 97239, USA
| | - Klaudia Walter
- Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Cambridge CB10 1SA, UK
| | - Ulrika Pettersson-Kymmer
- Departments of Pharmacology and Clinical Neurosciences, Umeå University, Umeå S-901 87, Sweden
- Department of Public Health and Clinical Medicine, Umeå University, Umeå SE-901 87, Sweden
| | - Shane McCarthy
- Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Cambridge CB10 1SA, UK
| | - Joel Eriksson
- Centre for Bone and Arthritis Research, Department of Internal Medicine and Clinical Nutrition, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg S-413 45, Sweden
- Centre for Bone and Arthritis Research, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg S-413 45, Sweden
| | - Tony Kwan
- McGill University and Genome Quebec Innovation Centre, Montréal H3A 0G1, Canada
| | - Mila Jhamai
- Department of Internal Medicine, Erasmus Medical Center, Rotterdam 3015GE, The Netherlands
| | - Katerina Trajanoska
- Department of Internal Medicine, Erasmus Medical Center, Rotterdam 3015GE, The Netherlands
- Department of Epidemiology, Erasmus Medical Center, Rotterdam 3015GE, The Netherlands
| | - Yasin Memari
- Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Cambridge CB10 1SA, UK
| | - Josine Min
- MRC Integrative Epidemiology Unit, University of Bristol, Bristol BS8 2BN, UK
| | - Jie Huang
- Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Cambridge CB10 1SA, UK
| | - Petr Danecek
- Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Cambridge CB10 1SA, UK
| | - Beth Wilmot
- Oregon Clinical and Translational Research Institute, Oregon Health &Science University, Portland, Oregon 97239, USA
- Department of Medical and Clinical Informatics, Oregon Health &Science University, Portland, Oregon 97239, USA
| | - Rui Li
- Departments of Medicine, Human Genetics, Epidemiology and Biostatistics, McGill University, Montréal H3A 1A2, Canada
- Department of Medicine, Lady Davis Institute for Medical Research, Jewish General Hospital, McGill University, Montréal H3T 1E2, Canada
| | - Wen-Chi Chou
- Institute for Aging Research, Hebrew SeniorLife, Boston, Massachusetts 02131, USA
- Department of Medicine, Harvard Medical School, Boston, Massachusetts 02115, USA
| | - Lauren E Mokry
- Department of Medicine, Lady Davis Institute for Medical Research, Jewish General Hospital, McGill University, Montréal H3T 1E2, Canada
| | - Alireza Moayyeri
- Farr Institute of Health Informatics Research, University College London, London NW1 2DA, UK
- Department of Twin Research and Genetic Epidemiology, King's College London, London SE1 7EH, UK
| | - Melina Claussnitzer
- Institute for Aging Research, Hebrew SeniorLife, Boston, Massachusetts 02131, USA
- Department of Medicine, Harvard Medical School, Boston, Massachusetts 02115, USA
- Broad Institute of MIT and Harvard, Boston, Massachusetts 02115, USA
- Department of Medicine, Beth Israel Deaconess Medical Center, Boston, Massachusetts 02115, USA
| | - Chia-Ho Cheng
- Institute for Aging Research, Hebrew SeniorLife, Boston, Massachusetts 02131, USA
| | - Warren Cheung
- McGill University and Genome Quebec Innovation Centre, Montréal H3A 0G1, Canada
- Department of Human Genetics, McGill University, Montréal H3A 1B1, Canada
| | - Carolina Medina-Gómez
- Department of Internal Medicine, Erasmus Medical Center, Rotterdam 3015GE, The Netherlands
- Department of Epidemiology, Erasmus Medical Center, Rotterdam 3015GE, The Netherlands
- Netherlands Genomics Initiative (NGI)-sponsored Netherlands Consortium for Healthy Aging (NCHA), Leiden 2300RC, The Netherlands
| | - Bing Ge
- McGill University and Genome Quebec Innovation Centre, Montréal H3A 0G1, Canada
| | - Shu-Huang Chen
- McGill University and Genome Quebec Innovation Centre, Montréal H3A 0G1, Canada
| | - Kwangbom Choi
- Center for Musculoskeletal Research, University of Rochester, Rochester, New York 14642, USA
| | - Ling Oei
- Department of Internal Medicine, Erasmus Medical Center, Rotterdam 3015GE, The Netherlands
- Department of Epidemiology, Erasmus Medical Center, Rotterdam 3015GE, The Netherlands
- Netherlands Genomics Initiative (NGI)-sponsored Netherlands Consortium for Healthy Aging (NCHA), Leiden 2300RC, The Netherlands
| | - James Fraser
- Department of Biochemistry and Goodman Cancer Research Center, McGill University, Montréal H3G 1Y6, Canada
| | - Robert Kraaij
- Department of Internal Medicine, Erasmus Medical Center, Rotterdam 3015GE, The Netherlands
- Department of Epidemiology, Erasmus Medical Center, Rotterdam 3015GE, The Netherlands
- Netherlands Genomics Initiative (NGI)-sponsored Netherlands Consortium for Healthy Aging (NCHA), Leiden 2300RC, The Netherlands
| | - Matthew A Hibbs
- Center for Musculoskeletal Research, University of Rochester, Rochester, New York 14642, USA
- Department of Computer Science, Trinity University, San Antonio, Texas 78212, USA
| | - Celia L Gregson
- Musculoskeletal Research Unit, University of Bristol, Bristol BS10 5NB, UK
| | - Denis Paquette
- Department of Biochemistry and Goodman Cancer Research Center, McGill University, Montréal H3G 1Y6, Canada
| | - Albert Hofman
- Department of Epidemiology, Erasmus Medical Center, Rotterdam 3015GE, The Netherlands
- Netherlands Genomics Initiative (NGI)-sponsored Netherlands Consortium for Healthy Aging (NCHA), Leiden 2300RC, The Netherlands
| | - Carl Wibom
- Department of Radiation Sciences, Umeå University, Umeå S-901 87, Sweden
| | - Gregory J Tranah
- Department of Public Health and Preventive Medicine, Oregon Health &Science University, Portland, Oregon 97239, USA
- Bone &Mineral Unit, Oregon Health &Science University, Portland, Oregon 97239, USA
| | - Mhairi Marshall
- The University of Queensland Diamantina Institute, Translational Research Institute, Princess Alexandra Hospital, Brisbane 4102, Australia
| | - Brooke B Gardiner
- The University of Queensland Diamantina Institute, Translational Research Institute, Princess Alexandra Hospital, Brisbane 4102, Australia
| | - Katie Cremin
- The University of Queensland Diamantina Institute, Translational Research Institute, Princess Alexandra Hospital, Brisbane 4102, Australia
| | - Paul Auer
- School of Public Health, University of Wisconsin, Milwaukee, Wisconsin 53726, USA
| | - Li Hsu
- Fred Hutchinson Cancer Research Center, Seattle, Washington 98109, USA
| | - Sue Ring
- School of Social and Community Medicine, University of Bristol, Bristol BS8 2BN, UK
| | - Joyce Y Tung
- Department of Research, 23andMe, Mountain View, California 94041, USA
| | | | - Anke W Enneman
- Department of Internal Medicine, Erasmus Medical Center, Rotterdam 3015GE, The Netherlands
| | - Natasja M van Schoor
- Department of Epidemiology and Biostatistics and the EMGO Institute for Health and Care Research, VU University Medical Center, Amsterdam 1007 MB, The Netherlands
| | | | - Nathalie van der Velde
- Department of Internal Medicine, Erasmus Medical Center, Rotterdam 3015GE, The Netherlands
- Department of Internal Medicine, Section Geriatrics, Academic Medical Center, Amsterdam 1105, The Netherlands
| | - Beatrice Melin
- Department of Radiation Sciences, Umeå University, Umeå S-901 87, Sweden
| | - John P Kemp
- The University of Queensland Diamantina Institute, Translational Research Institute, Princess Alexandra Hospital, Brisbane 4102, Australia
- MRC Integrative Epidemiology Unit, University of Bristol, Bristol BS8 2BN, UK
| | | | - Adrian Sayers
- Musculoskeletal Research Unit, University of Bristol, Bristol BS10 5NB, UK
| | - Yanhua Zhou
- Department of Biostatistics, Boston University School of Public Health, Boston, Massachusetts 02118, USA
| | - Sophie Calderari
- Cordeliers Research Centre, INSERM UMRS 1138, Paris 75006, France
- Institute of Cardiometabolism and Nutrition, University Pierre &Marie Curie, Paris 75013, France
| | - Jeroen van Rooij
- Department of Internal Medicine, Erasmus Medical Center, Rotterdam 3015GE, The Netherlands
- Netherlands Genomics Initiative (NGI)-sponsored Netherlands Consortium for Healthy Aging (NCHA), Leiden 2300RC, The Netherlands
| | - Chris Carlson
- Fred Hutchinson Cancer Research Center, Seattle, Washington 98109, USA
| | - Ulrike Peters
- Fred Hutchinson Cancer Research Center, Seattle, Washington 98109, USA
| | - Soizik Berlivet
- Department of Biochemistry and Goodman Cancer Research Center, McGill University, Montréal H3G 1Y6, Canada
| | - Josée Dostie
- Department of Biochemistry and Goodman Cancer Research Center, McGill University, Montréal H3G 1Y6, Canada
| | - Andre G Uitterlinden
- Department of Internal Medicine, Erasmus Medical Center, Rotterdam 3015GE, The Netherlands
- Department of Epidemiology, Erasmus Medical Center, Rotterdam 3015GE, The Netherlands
- Netherlands Genomics Initiative (NGI)-sponsored Netherlands Consortium for Healthy Aging (NCHA), Leiden 2300RC, The Netherlands
| | - Stephen R Williams
- Departments of Medicine (Cardiovascular Medicine), Centre for Public Health Genomics, University of Virginia, Charlottesville, Virginia 22908, USA
| | - Charles Farber
- Departments of Medicine (Cardiovascular Medicine), Centre for Public Health Genomics, University of Virginia, Charlottesville, Virginia 22908, USA
| | - Daniel Grinberg
- Department of Genetics, University of Barcelona, Barcelona 08028, Spain
- U-720, Centre for Biomedical Network Research on Rare Diseases (CIBERER), Barcelona 28029, Spain
- Department of Human Molecular Genetics, The Institute of Biomedicine of the University of Barcelona (IBUB), Barcelona 08028, Spain
| | - Andrea Z LaCroix
- Women's Health Center of Excellence Family Medicine and Public Health, University of California - San Diego, San Diego, California 92093, USA
| | - Jeff Haessler
- Fred Hutchinson Cancer Research Center, Seattle, Washington 98109, USA
| | - Daniel I Chasman
- Department of Medicine, Harvard Medical School, Boston, Massachusetts 02115, USA
- Division of Preventive Medicine, Brigham and Women's Hospital, Boston, Massachusetts 02215, USA
| | - Franco Giulianini
- Division of Preventive Medicine, Brigham and Women's Hospital, Boston, Massachusetts 02215, USA
| | - Lynda M Rose
- Division of Preventive Medicine, Brigham and Women's Hospital, Boston, Massachusetts 02215, USA
| | - Paul M Ridker
- Department of Medicine, Harvard Medical School, Boston, Massachusetts 02115, USA
- Division of Preventive Medicine, Brigham and Women's Hospital, Boston, Massachusetts 02215, USA
| | - John A Eisman
- Osteoporosis &Bone Biology Program, Garvan Institute of Medical Research, Sydney 2010, Australia
- School of Medicine Sydney, University of Notre Dame Australia, Sydney 6959, Australia
- St. Vincent's Hospital &Clinical School, NSW University, Sydney 2010, Australia
| | - Tuan V Nguyen
- Osteoporosis &Bone Biology Program, Garvan Institute of Medical Research, Sydney 2010, Australia
- St. Vincent's Hospital &Clinical School, NSW University, Sydney 2010, Australia
| | - Jacqueline R Center
- Osteoporosis &Bone Biology Program, Garvan Institute of Medical Research, Sydney 2010, Australia
- St. Vincent's Hospital &Clinical School, NSW University, Sydney 2010, Australia
| | - Xavier Nogues
- Musculoskeletal Research Group, Institut Hospital del Mar d'Investigacions Mèdiques, Barcelona 08003, Spain
- Cooperative Research Network on Aging and Fragility (RETICEF), Institute of Health Carlos III, 28029, Spain
- Department of Internal Medicine, Hospital del Mar, Universitat Autònoma de Barcelona, Barcelona 08193, Spain
| | - Natalia Garcia-Giralt
- Musculoskeletal Research Group, Institut Hospital del Mar d'Investigacions Mèdiques, Barcelona 08003, Spain
- Cooperative Research Network on Aging and Fragility (RETICEF), Institute of Health Carlos III, 28029, Spain
| | - Lenore L Launer
- Neuroepidemiology Section, National Institute on Aging, National Institutes of Health, Bethesda, Maryland 20892, USA
| | - Vilmunder Gudnason
- Icelandic Heart Association, Kopavogur IS-201, Iceland
- Faculty of Medicine, University of Iceland, Reykjavik IS-101, Iceland
| | - Dan Mellström
- Centre for Bone and Arthritis Research, Department of Internal Medicine and Clinical Nutrition, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg S-413 45, Sweden
| | - Liesbeth Vandenput
- Centre for Bone and Arthritis Research, Department of Internal Medicine and Clinical Nutrition, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg S-413 45, Sweden
| | - Najaf Amin
- Genetic epidemiology unit, Department of Epidemiology, Erasmus MC, Rotterdam 3000CA, The Netherlands
| | - Cornelia M van Duijn
- Genetic epidemiology unit, Department of Epidemiology, Erasmus MC, Rotterdam 3000CA, The Netherlands
| | - Magnus K Karlsson
- Department of Orthopaedics, Skåne University Hospital Malmö 205 02, Sweden
| | - Östen Ljunggren
- Department of Medical Sciences, University of Uppsala, Uppsala 751 85, Sweden
| | - Olle Svensson
- Department of Surgical and Perioperative Sciences, Umeå Unviersity, Umeå 901 85, Sweden
| | - Göran Hallmans
- Department of Public Health and Clinical Medicine, Umeå University, Umeå SE-901 87, Sweden
| | - François Rousseau
- Department of Molecular Biology, Medical Biochemistry and Pathology, Université Laval, Québec City G1V 0A6, Canada
- Axe Santé des Populations et Pratiques Optimales en Santé, Centre de recherche du CHU de Québec, Québec City G1V 4G2, Canada
| | - Sylvie Giroux
- Axe Santé des Populations et Pratiques Optimales en Santé, Centre de recherche du CHU de Québec, Québec City G1V 4G2, Canada
| | - Johanne Bussière
- Axe Santé des Populations et Pratiques Optimales en Santé, Centre de recherche du CHU de Québec, Québec City G1V 4G2, Canada
| | - Pascal P Arp
- Department of Internal Medicine, Erasmus Medical Center, Rotterdam 3015GE, The Netherlands
| | - Fjorda Koromani
- Department of Internal Medicine, Erasmus Medical Center, Rotterdam 3015GE, The Netherlands
- Department of Epidemiology, Erasmus Medical Center, Rotterdam 3015GE, The Netherlands
| | - Richard L Prince
- Department of Endocrinology and Diabetes, Sir Charles Gairdner Hospital, Nedlands 6009, Australia
- Department of Medicine, University of Western Australia, Perth 6009, Australia
| | - Joshua R Lewis
- Department of Endocrinology and Diabetes, Sir Charles Gairdner Hospital, Nedlands 6009, Australia
- Department of Medicine, University of Western Australia, Perth 6009, Australia
| | - Bente L Langdahl
- Department of Endocrinology and Internal Medicine, Aarhus University Hospital, Aarhus C 8000, Denmark
| | - A Pernille Hermann
- Department of Endocrinology, Odense University Hospital, Odense C 5000, Denmark
| | - Jens-Erik B Jensen
- Department of Endocrinology, Hvidovre University Hospital, Hvidovre 2650, Denmark
| | - Stephen Kaptoge
- Farr Institute of Health Informatics Research, University College London, London NW1 2DA, UK
| | - Kay-Tee Khaw
- Clinical Gerontology Unit, University of Cambridge, Cambridge CB2 2QQ, UK
| | - Jonathan Reeve
- Medicine and Public Health and Primary Care, University of Cambridge, Cambridge CB1 8RN, UK
- Institute of Musculoskeletal Sciences, The Botnar Research Centre, University of Oxford, Oxford OX3 7LD, UK
| | - Melissa M Formosa
- Department of Applied Biomedical Science, Faculty of Health Sciences, University of Malta, Msida MSD 2080, Malta
| | - Angela Xuereb-Anastasi
- Department of Applied Biomedical Science, Faculty of Health Sciences, University of Malta, Msida MSD 2080, Malta
| | - Kristina Åkesson
- Department of Orthopaedics, Skåne University Hospital Malmö 205 02, Sweden
- Clinical and Molecular Osteoporosis Research Unit, Department of Clinical Sciences Malmö, Lund University, 205 02, Sweden
| | - Fiona E McGuigan
- Clinical and Molecular Osteoporosis Research Unit, Department of Clinical Sciences Malmö, Lund University, 205 02, Sweden
| | - Gaurav Garg
- Clinical and Molecular Osteoporosis Research Unit, Department of Clinical Sciences Malmö, Lund University, 205 02, Sweden
| | - Jose M Olmos
- Department of Medicine and Psychiatry, University of Cantabria, Santander 39011, Spain
- Department of Internal Medicine, Hospital U.M. Valdecilla- IDIVAL, Santander 39008, Spain
| | - Maria T Zarrabeitia
- Department of Legal Medicine, University of Cantabria, Santander 39011, Spain
| | - Jose A Riancho
- Department of Medicine and Psychiatry, University of Cantabria, Santander 39011, Spain
- Department of Internal Medicine, Hospital U.M. Valdecilla- IDIVAL, Santander 39008, Spain
| | - Stuart H Ralston
- Centre for Genomic and Experimental Medicine, Institute of Genetics and Molecular Medicine, Western General Hospital, University of Edinburgh, Edinburgh EH4 2XU, UK
| | - Nerea Alonso
- Centre for Genomic and Experimental Medicine, Institute of Genetics and Molecular Medicine, Western General Hospital, University of Edinburgh, Edinburgh EH4 2XU, UK
| | - Xi Jiang
- Department of Reconstructive Sciences, College of Dental Medicine, University of Connecticut Health Center, Farmington, Connecticut 06030, USA
| | - David Goltzman
- Department of Medicine and Physiology, McGill University, Montréal H4A 3J1, Canada
| | - Tomi Pastinen
- McGill University and Genome Quebec Innovation Centre, Montréal H3A 0G1, Canada
- Department of Human Genetics, McGill University, Montréal H3A 1B1, Canada
| | - Elin Grundberg
- McGill University and Genome Quebec Innovation Centre, Montréal H3A 0G1, Canada
- Department of Human Genetics, McGill University, Montréal H3A 1B1, Canada
| | - Dominique Gauguier
- Cordeliers Research Centre, INSERM UMRS 1138, Paris 75006, France
- Institute of Cardiometabolism and Nutrition, University Pierre &Marie Curie, Paris 75013, France
| | - Eric S Orwoll
- Bone &Mineral Unit, Oregon Health &Science University, Portland, Oregon 97239, USA
- Department of Medicine, Oregon Health &Science University, Portland, Oregon 97239, USA
| | - David Karasik
- Institute for Aging Research, Hebrew SeniorLife, Boston, Massachusetts 02131, USA
- Faculty of Medicine in the Galilee, Bar-Ilan University, Safed 13010, Israel
| | - George Davey-Smith
- MRC Integrative Epidemiology Unit, University of Bristol, Bristol BS8 2BN, UK
| | - Albert V Smith
- Icelandic Heart Association, Kopavogur IS-201, Iceland
- Faculty of Medicine, University of Iceland, Reykjavik IS-101, Iceland
| | | | - Tamara B Harris
- Laboratory of Epidemiology, National Institute on Aging, National Institutes of Health, Bethesda, Maryland 20892, USA
| | - M Carola Zillikens
- Department of Internal Medicine, Erasmus Medical Center, Rotterdam 3015GE, The Netherlands
| | - Joyce B J van Meurs
- Department of Internal Medicine, Erasmus Medical Center, Rotterdam 3015GE, The Netherlands
- Department of Epidemiology, Erasmus Medical Center, Rotterdam 3015GE, The Netherlands
| | - Unnur Thorsteinsdottir
- Department of Population Genomics, deCODE Genetics, Reykjavik IS-101, Iceland
- Faculty of Medicine, University of Iceland, Reykjavik IS-101, Iceland
| | - Matthew T Maurano
- Department of Genome Sciences, University of Washington, Seattle, Washington 98195, USA
| | - Nicholas J Timpson
- MRC Integrative Epidemiology Unit, University of Bristol, Bristol BS8 2BN, UK
| | - Nicole Soranzo
- Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Cambridge CB10 1SA, UK
| | - Richard Durbin
- Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Cambridge CB10 1SA, UK
| | - Scott G Wilson
- Department of Twin Research and Genetic Epidemiology, King's College London, London SE1 7EH, UK
- Department of Endocrinology and Diabetes, Sir Charles Gairdner Hospital, Nedlands 6009, Australia
- School of Medicine and Pharmacology, University of Western Australia, Crawley 6009, Australia
| | - Evangelia E Ntzani
- Department of Hygiene and Epidemiology, University of Ioannina School of Medicine, Ioannina 45110, Greece
- Department of Health Services, Policy and Practice, Brown University School of Public Health, Providence, Rhode Island 02903, USA
| | - Matthew A Brown
- The University of Queensland Diamantina Institute, Translational Research Institute, Princess Alexandra Hospital, Brisbane 4102, Australia
| | - Kari Stefansson
- Faculty of Medicine, University of Iceland, Reykjavik IS-101, Iceland
- deCODE Genetics, Reykjavik IS-101, Iceland
| | - David A Hinds
- Department of Research, 23andMe, Mountain View, California 94041, USA
| | - Tim Spector
- Department of Twin Research and Genetic Epidemiology, King's College London, London SE1 7EH, UK
| | - L Adrienne Cupples
- Department of Biostatistics, Boston University School of Public Health, Boston, Massachusetts 02118, USA
- Framingham Heart Study, Framingham, Massachusetts 01702, USA
| | - Claes Ohlsson
- Centre for Bone and Arthritis Research, Department of Internal Medicine and Clinical Nutrition, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg S-413 45, Sweden
| | - Celia M T Greenwood
- Department of Medicine, Lady Davis Institute for Medical Research, Jewish General Hospital, McGill University, Montréal H3T 1E2, Canada
- Department of Human Genetics, McGill University, Montréal H3A 1B1, Canada
- Department of Epidemiology, Biostatistics and Occupational Health, McGill University, Montréal H3A 1A2, Canada
- Department of Oncology, Gerald Bronfman Centre, McGill University, Montréal H2W 1S6, Canada
| | - Rebecca D Jackson
- Department of Medicine, Division of Endocrinology, Diabetes and Metabolism, The Ohio State University, Columbus, Ohio 43210, USA
| | - David W Rowe
- Department of Reconstructive Sciences, College of Dental Medicine, University of Connecticut Health Center, Farmington, Connecticut 06030, USA
| | - Cynthia A Loomis
- The Ronald O. Perelman Department of Dermatology and Department of Cell Biology, New York University School of Medicine, New York, New York 10016, USA
| | - David M Evans
- The University of Queensland Diamantina Institute, Translational Research Institute, Princess Alexandra Hospital, Brisbane 4102, Australia
- MRC Integrative Epidemiology Unit, University of Bristol, Bristol BS8 2BN, UK
| | | | - Alexandra L Joyner
- Developmental Biology Program, Sloan Kettering Institute, New York, New York 10065, USA
| | - Emma L Duncan
- The University of Queensland Diamantina Institute, Translational Research Institute, Princess Alexandra Hospital, Brisbane 4102, Australia
- Department of Diabetes and Endocrinology, Royal Brisbane and Women's Hospital, Brisbane 4029, Australia
| | - Douglas P Kiel
- Institute for Aging Research, Hebrew SeniorLife, Boston, Massachusetts 02131, USA
- Department of Medicine, Harvard Medical School, Boston, Massachusetts 02115, USA
- Broad Institute of MIT and Harvard, Boston, Massachusetts 02115, USA
- Department of Medicine, Beth Israel Deaconess Medical Center, Boston, Massachusetts 02115, USA
| | - Fernando Rivadeneira
- Department of Internal Medicine, Erasmus Medical Center, Rotterdam 3015GE, The Netherlands
- Department of Epidemiology, Erasmus Medical Center, Rotterdam 3015GE, The Netherlands
- Netherlands Genomics Initiative (NGI)-sponsored Netherlands Consortium for Healthy Aging (NCHA), Leiden 2300RC, The Netherlands
| | - J Brent Richards
- Departments of Medicine, Human Genetics, Epidemiology and Biostatistics, McGill University, Montréal H3A 1A2, Canada
- Department of Medicine, Lady Davis Institute for Medical Research, Jewish General Hospital, McGill University, Montréal H3T 1E2, Canada
- Department of Twin Research and Genetic Epidemiology, King's College London, London SE1 7EH, UK
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Krishnan L, Priddy LB, Esancy C, Li MTA, Stevens HY, Jiang X, Tran L, Rowe DW, Guldberg RE. Hydrogel-based Delivery of rhBMP-2 Improves Healing of Large Bone Defects Compared With Autograft. Clin Orthop Relat Res 2015; 473:2885-97. [PMID: 25917422 PMCID: PMC4523508 DOI: 10.1007/s11999-015-4312-z] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
BACKGROUND Autologous bone grafting remains the gold standard in the treatment of large bone defects but is limited by tissue availability and donor site morbidity. Recombinant human bone morphogenetic protein-2 (rhBMP-2), delivered with a collagen sponge, is clinically used to treat large bone defects and complications such as delayed healing or nonunion. For the same dose of rhBMP-2, we have shown that a hybrid nanofiber mesh-alginate (NMA-rhBMP-2) delivery system provides longer-term release and increases functional bone regeneration in critically sized rat femoral bone defects compared with a collagen sponge. However, no comparisons of healing efficiencies have been made thus far between this hybrid delivery system and the gold standard of using autograft. QUESTIONS/PURPOSES We compared the efficacy of the NMA-rhBMP-2 hybrid delivery system to morselized autograft and hypothesized that the functional regeneration of large bone defects observed with sustained BMP delivery would be at least comparable to autograft treatment as measured by total bone volume and ex vivo mechanical properties. METHODS Bilateral critically sized femoral bone defects in rats were treated with either live autograft or with the NMA-rhBMP-2 hybrid delivery system such that each animal received one treatment per leg. Healing was monitored by radiography and histology at 2, 4, 8, and 12 weeks. Defects were evaluated for bone formation by longitudinal micro-CT scans over 12 weeks (n = 14 per group). The bone volume, bone density, and the total new bone formed beyond 2 weeks within the defect were calculated from micro-CT reconstructions and values compared for the 2-, 4-, 8-, and 12-week scans within and across the two treatment groups. Two animals were used for bone labeling with subcutaneously injected dyes at 4, 8, and 12 weeks followed by histology at 12 weeks to identify incremental new bone formation. Functional recovery was measured by ex vivo biomechanical testing (n = 9 per group). Maximum torque and torsional stiffness calculated from torsion testing of the femurs at 12 weeks were compared between the two groups. RESULTS The NMA-rhBMP-2 hybrid delivery system resulted in greater bone formation and improved biomechanical properties compared with autograft at 12 weeks. Comparing new bone volume within each group, the NMA-rhBMP-2-treated group had higher volume (p < 0.001) at 12 weeks (72.59 ± 18.34 mm(3)) compared with 8 weeks (54.90 ± 16.14) and 4 weeks (14.22 ± 9.59). The new bone volume was also higher at 8 weeks compared with 4 weeks (p < 0.001). The autograft group showed higher (p <0.05) new bone volume at 8 weeks (11.19 ± 8.59 mm(3)) and 12 weeks (14.64 ± 10.36) compared with 4 weeks (5.15 ± 4.90). Between groups, the NMA-rhBMP-2-treated group had higher (p < 0.001) new bone volume than the autograft group at both 8 and 12 weeks. Local mineralized matrix density in the NMA-rhBMP-2-treated group was lower than that of the autograft group at all time points (p < 0.001). Presence of nuclei within the lacunae of the autograft and early appositional bone formation seen in representative histology sections suggested that the bone grafts remained viable and were functionally engrafted within the defect. The bone label distribution from representative sections also revealed more diffuse mineralization in the defect in the NMA-rhBMP-2-treated group, whereas more localized distribution of new mineral was seen at the edges of the graft pieces in the autograft group. The NMA-rhBMP-2-treated group also revealed higher torsional stiffness (0.042 ± 0.019 versus 0.020 ± 0.022 N-m/°; p = 0.037) and higher maximum torque (0.270 ± 0.108 versus 0.125 ± 0.137 N-m; p = 0.024) compared with autograft. CONCLUSIONS The NMA-rhBMP-2 hybrid delivery system improved bone formation and restoration of biomechanical function of rat segmental bone defects compared with autograft treatment. CLINICAL RELEVANCE Delivery systems that allow prolonged availability of BMP may provide an effective clinical alternative to autograft treatment for repair of segmental bone defects. Future studies in a large animal model comparing mixed cortical-trabecular autograft and the NMA-rhBMP-2 hybrid delivery system are the next step toward clinical translation of this approach.
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Affiliation(s)
- Laxminarayanan Krishnan
- />Parker H. Petit Institute for Bioengineering & Bioscience, Georgia Institute of Technology, 315 Ferst Drive, Atlanta, GA 30332-0363 USA
| | - Lauren B. Priddy
- />Parker H. Petit Institute for Bioengineering & Bioscience, Georgia Institute of Technology, 315 Ferst Drive, Atlanta, GA 30332-0363 USA
- />Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology & Emory University, Atlanta, GA USA
| | - Camden Esancy
- />Parker H. Petit Institute for Bioengineering & Bioscience, Georgia Institute of Technology, 315 Ferst Drive, Atlanta, GA 30332-0363 USA
| | - Mon-Tzu Alice Li
- />Parker H. Petit Institute for Bioengineering & Bioscience, Georgia Institute of Technology, 315 Ferst Drive, Atlanta, GA 30332-0363 USA
- />Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology & Emory University, Atlanta, GA USA
- />Emory University, Atlanta, GA USA
| | - Hazel Y. Stevens
- />Parker H. Petit Institute for Bioengineering & Bioscience, Georgia Institute of Technology, 315 Ferst Drive, Atlanta, GA 30332-0363 USA
- />George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA USA
| | - Xi Jiang
- />University of Connecticut Health Center, Farmington, CT USA
| | | | - David W. Rowe
- />University of Connecticut Health Center, Farmington, CT USA
| | - Robert E. Guldberg
- />Parker H. Petit Institute for Bioengineering & Bioscience, Georgia Institute of Technology, 315 Ferst Drive, Atlanta, GA 30332-0363 USA
- />Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology & Emory University, Atlanta, GA USA
- />George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA USA
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Villa MM, Wang L, Huang J, Rowe DW, Wei M. Improving the permeability of lyophilized collagen-hydroxyapatite scaffolds for cell-based bone regeneration with a gelatin porogen. J Biomed Mater Res B Appl Biomater 2015; 104:1580-1590. [PMID: 26305733 DOI: 10.1002/jbm.b.33387] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2014] [Revised: 12/14/2014] [Accepted: 01/09/2015] [Indexed: 11/08/2022]
Abstract
Bone tissue engineering using biomaterial scaffolds and culture-expanded osteoprogenitor cells has been demonstrated in several studies; however, it is not yet a clinical reality. One challenge is the optimal design of scaffolds for cell delivery and the identification of scaffold parameters that can delineate success and failure in vivo. Motivated by a previous experiment in which a batch of lyophilized collagen-hydroxyapatite (HA) scaffolds displayed modest bone formation in vivo, despite having large pores and high porosity, we began to investigate the effect of scaffold permeability on bone formation. Herein, we fabricated scaffolds with a permeability of 2.17 ± 1.63 × 10-9 m4 /(N s) and fourfold higher using a sacrificial gelatin porogen. Scaffolds were seeded with mouse bone marrow stromal cells carrying a fluorescent reporter for osteoblast differentiation and implanted into critical-size calvarial defects in immunodeficient mice. The porogen scaffold group containing a 1:1 ratio of solids to beads was significantly more radiopaque than the scaffold group without the bead porogen 3 weeks after implantation. Quantitative histomorphometry uncovered the same trend between the 1:1 group and scaffolds without porogen found in the radiographic data; however, this was not statistically significant here. Taken together, the X-ray and histology suggest that the 1:1 ratio of porogen to scaffold solids, resulting in a fourfold increase in permeability, may enhance bone formation when compared to scaffolds without porogen. Scaffold permeability can be a useful quality control measure before implantation and this practice should improve the consistency and efficacy of cell-based bone tissue engineering. © 2015 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 104B: 1580-1590, 2016.
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Affiliation(s)
- Max M Villa
- Department of Materials Science and Engineering, Institute of Materials Science, University of Connecticut, Storrs, Connecticut, 06269
| | - Liping Wang
- Center for Regenerative Medicine and Skeletal Development, Department of Reconstructive Sciences, School of Dental Medicine, University of Connecticut Health Center, Farmington, Connecticut, 06030
| | - Jianping Huang
- Center for Regenerative Medicine and Skeletal Development, Department of Reconstructive Sciences, School of Dental Medicine, University of Connecticut Health Center, Farmington, Connecticut, 06030
| | - David W Rowe
- Center for Regenerative Medicine and Skeletal Development, Department of Reconstructive Sciences, School of Dental Medicine, University of Connecticut Health Center, Farmington, Connecticut, 06030
| | - Mei Wei
- Department of Materials Science and Engineering, Institute of Materials Science, University of Connecticut, Storrs, Connecticut, 06269.
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Breidenbach AP, Aschbacher‐Smith L, Lu Y, Dyment NA, Liu C, Liu H, Wylie C, Rao M, Shearn JT, Rowe DW, Kadler KE, Jiang R, Butler DL. Ablating hedgehog signaling in tenocytes during development impairs biomechanics and matrix organization of the adult murine patellar tendon enthesis. J Orthop Res 2015; 33:1142-51. [PMID: 25807894 PMCID: PMC4706742 DOI: 10.1002/jor.22899] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/15/2014] [Accepted: 03/02/2015] [Indexed: 02/04/2023]
Abstract
Restoring the native structure of the tendon enthesis, where collagen fibers of the midsubstance are integrated within a fibrocartilaginous structure, is problematic following injury. As current surgical methods fail to restore this region adequately, engineers, biologists, and clinicians are working to understand how this structure forms as a prerequisite to improving repair outcomes. We recently reported on the role of Indian hedgehog (Ihh), a novel enthesis marker, in regulating early postnatal enthesis formation. Here, we investigate how inactivating the Hh pathway in tendon cells affects adult (12-week) murine patellar tendon (PT) enthesis mechanics, fibrocartilage morphology, and collagen fiber organization. We show that ablating Hh signaling resulted in greater than 100% increased failure insertion strain (0.10 v. 0.05 mm/mm, p<0.01) as well as sub-failure biomechanical deficiencies. Although collagen fiber orientation appears overtly normal in the midsubstance, ablating Hh signaling reduces mineralized fibrocartilage by 32%, leading to less collagen embedded within mineralized tissue. Ablating Hh signaling also caused collagen fibers to coalesce at the insertion, which may explain in part the increased strains. These results indicate that Ihh signaling plays a critical role in the mineralization process of fibrocartilaginous entheses and may be a novel therapeutic to promote tendon-to-bone healing.
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Affiliation(s)
- Andrew P. Breidenbach
- Department of BiomedicalBiomedical Engineering ProgramChemical and Environmental EngineeringUniversity of CincinnatiCincinnatiOhio
| | | | - Yinhui Lu
- Wellcome Trust Centre for Cell‐Matrix ResearchFaculty of Life SciencesUniversity of ManchesterManchesterUK
| | - Nathaniel A. Dyment
- Department of Reconstructive SciencesSchool of Dental MedicineUniversity of Connecticut Health CenterFarmingtonConnecticut
| | - Chia‐Feng Liu
- Department of Cellular & Molecular MedicineCleveland Clinic Lerner Research InstituteClevelandOhio
| | - Han Liu
- Division of Developmental BiologyCincinnati Children's Hospital Medical CenterCincinnatiOhio
| | - Chris Wylie
- Division of Developmental BiologyCincinnati Children's Hospital Medical CenterCincinnatiOhio
| | - Marepalli Rao
- Department of BiomedicalBiomedical Engineering ProgramChemical and Environmental EngineeringUniversity of CincinnatiCincinnatiOhio
| | - Jason T. Shearn
- Department of BiomedicalBiomedical Engineering ProgramChemical and Environmental EngineeringUniversity of CincinnatiCincinnatiOhio
| | - David W. Rowe
- Department of Reconstructive SciencesSchool of Dental MedicineUniversity of Connecticut Health CenterFarmingtonConnecticut
| | - Karl E. Kadler
- Wellcome Trust Centre for Cell‐Matrix ResearchFaculty of Life SciencesUniversity of ManchesterManchesterUK
| | - Rulang Jiang
- Division of Developmental BiologyCincinnati Children's Hospital Medical CenterCincinnatiOhio
| | - David L. Butler
- Department of BiomedicalBiomedical Engineering ProgramChemical and Environmental EngineeringUniversity of CincinnatiCincinnatiOhio
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Dyment NA, Breidenbach AP, Schwartz AG, Russell RP, Aschbacher-Smith L, Liu H, Hagiwara Y, Jiang R, Thomopoulos S, Butler DL, Rowe DW. Gdf5 progenitors give rise to fibrocartilage cells that mineralize via hedgehog signaling to form the zonal enthesis. Dev Biol 2015; 405:96-107. [PMID: 26141957 DOI: 10.1016/j.ydbio.2015.06.020] [Citation(s) in RCA: 79] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2015] [Revised: 06/03/2015] [Accepted: 06/24/2015] [Indexed: 02/01/2023]
Abstract
The sequence of events that leads to the formation of a functionally graded enthesis is not clearly defined. The current study demonstrates that clonal expansion of Gdf5 progenitors contributes to linear growth of the enthesis. Prior to mineralization, Col1+ cells in the enthesis appose Col2+ cells of the underlying primary cartilage. At the onset of enthesis mineralization, cells at the base of the enthesis express alkaline phosphatase, Indian hedgehog, and ColX as they mineralize. The mineralization front then extends towards the tendon midsubstance as cells above the front become encapsulated in mineralized fibrocartilage over time. The hedgehog (Hh) pathway regulates this process, as Hh-responsive Gli1+ cells within the developing enthesis mature from unmineralized to mineralized fibrochondrocytes in response to activated signaling. Hh signaling is required for mineralization, as tissue-specific deletion of its obligate transducer Smoothened in the developing tendon and enthesis cells leads to significant reductions in the apposition of mineralized fibrocartilage. Together, these findings provide a spatiotemporal map of events - from expansion of the embryonic progenitor pool to synthesis of the collagen template and finally mineralization of this template - that leads to the formation of the mature zonal enthesis. These results can inform future tendon-to-bone repair strategies to create a mechanically functional enthesis in which tendon collagen fibers are anchored to bone through mineralized fibrocartilage.
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Affiliation(s)
- Nathaniel A Dyment
- Center for Regenerative Medicine and Skeletal Development, School of Dental Medicine, University of Connecticut Health Center, United States.
| | - Andrew P Breidenbach
- Biomedical Engineering Program, College of Engineering and Applied Science, University of Cincinnati, United States
| | - Andrea G Schwartz
- Department of Orthopaedic Surgery, Washington University in St. Louis, United States
| | - Ryan P Russell
- Center for Regenerative Medicine and Skeletal Development, School of Dental Medicine, University of Connecticut Health Center, United States
| | | | - Han Liu
- Division of Developmental Biology, Cincinnati Children's Hospital Medical Center, United States
| | - Yusuke Hagiwara
- Department of Orthopaedic Surgery, Nippon Medical School Hospital, Tokyo, Japan
| | - Rulang Jiang
- Division of Developmental Biology, Cincinnati Children's Hospital Medical Center, United States
| | - Stavros Thomopoulos
- Department of Orthopaedic Surgery, Washington University in St. Louis, United States
| | - David L Butler
- Biomedical Engineering Program, College of Engineering and Applied Science, University of Cincinnati, United States
| | - David W Rowe
- Center for Regenerative Medicine and Skeletal Development, School of Dental Medicine, University of Connecticut Health Center, United States
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Gohil SV, Brittain SB, Kan HM, Drissi H, Rowe DW, Nair LS. Evaluation of enzymatically crosslinked injectable glycol chitosan hydrogel. J Mater Chem B 2015; 3:5511-5522. [PMID: 32262522 DOI: 10.1039/c5tb00663e] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Enzymatically cross-linkable phenol-conjugated glycol chitosan was prepared by reacting glycol chitosan with 3-(4-hydroxyphenyl)propionic acid (HPP). The chemical modification was confirmed by FTIR, 1H-NMR and UV spectroscopy. Glycol chitosan hydrogels (HPP-GC) with or without rhBMP-2 were prepared by the oxidative coupling of the substituted phenol groups in the presence of hydrogen peroxide and horse radish peroxidase. Rheological characterization demonstrated the feasibility of developing hydrogels with varying storage moduli by changing the polymer concentration. The gel presented a microporous structure with pore sizes ranging from 50-350 μm. The good viability of encapsulated 7F2 osteoblasts indicated non-toxicity of the gelation conditions. In vitro release of rhBMP-2 in phosphate buffer solution showed ∼11% release in 360 h. The ability of the hydrogel to maintain the in vivo bioactivity of rhBMP-2 was evaluated in a bilateral critical size calvarial bone defect model in Col3.6 transgenic fluorescent reporter mice. The presence of fluorescent green osteoblast cells with overlying red alizarin complexone and yellow stain indicating osteoclast TRAP activity confirmed active cell-mediated mineralization and remodelling process at the implantation site. The complete closure of the defect site at 4 and 8 weeks post implantation demonstrated the potent osteoinductivity of the rhBMP-2 containing gel.
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Affiliation(s)
- Shalini V Gohil
- Department of Orthopaedic Surgery, UConn Health, E-7041, MC-3711, 263 Farmington Avenue, Farmington, Connecticut 06030, USA.
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Breidenbach AP, Dyment NA, Lu Y, Rao M, Shearn JT, Rowe DW, Kadler KE, Butler DL. Fibrin gels exhibit improved biological, structural, and mechanical properties compared with collagen gels in cell-based tendon tissue-engineered constructs. Tissue Eng Part A 2014; 21:438-50. [PMID: 25266738 DOI: 10.1089/ten.tea.2013.0768] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
The prevalence of tendon and ligament injuries and inadequacies of current treatments is driving the need for alternative strategies such as tissue engineering. Fibrin and collagen biopolymers have been popular materials for creating tissue-engineered constructs (TECs), as they exhibit advantages of biocompatibility and flexibility in construct design. Unfortunately, a few studies have directly compared these materials for tendon and ligament applications. Therefore, this study aims at determining how collagen versus fibrin hydrogels affect the biological, structural, and mechanical properties of TECs during formation in vitro. Our findings show that tendon and ligament progenitor cells seeded in fibrin constructs exhibit improved tenogenic gene expression patterns compared with their collagen-based counterparts for approximately 14 days in culture. Fibrin-based constructs also exhibit improved cell-derived collagen alignment, increased linear modulus (2.2-fold greater) compared with collagen-based constructs. Cyclic tensile loading, which promotes the maturation of tendon constructs in a previous work, exhibits a material-dependent effect in this study. Fibrin constructs show trending reductions in mechanical, biological, and structural properties, whereas collagen constructs only show improved tenogenic expression in the presence of mechanical stimulation. These findings highlight that components of the mechanical stimulus (e.g., strain amplitude or time of initiation) need to be tailored to the material and cell type. Given the improvements in tenogenic expression, extracellular matrix organization, and material properties during static culture, in vitro findings presented here suggest that fibrin-based constructs may be a more suitable alternative to collagen-based constructs for tissue-engineered tendon/ligament repair.
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Affiliation(s)
- Andrew P Breidenbach
- 1 Biomedical Engineering Program, Department of Biomedical, Chemical and Environmental Engineering, College of Engineering and Applied Science, University of Cincinnati , Cincinnati, Ohio
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Alaee F, Hong SH, Dukas AG, Pensak MJ, Rowe DW, Lieberman JR. Evaluation of osteogenic cell differentiation in response to bone morphogenetic protein or demineralized bone matrix in a critical sized defect model using GFP reporter mice. J Orthop Res 2014; 32:1120-8. [PMID: 24888702 DOI: 10.1002/jor.22657] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/16/2013] [Accepted: 05/08/2014] [Indexed: 02/04/2023]
Abstract
We evaluated the osteoprogenitor response to rhBMP-2 and DBM in a transgenic mouse critical sized defect. The mice expressed Col3.6GFPtopaz (a pre-osteoblastic marker), Col2.3GFPemerald (an osteoblastic marker) and α-smooth muscle actin (α-SMA-Cherry, a pericyte/myofibroblast marker). We assessed defect healing at various time points using radiographs, frozen, and conventional histologic analyses. GFP signal in regions of interest corresponding to the areas of new bone formation was quantified using a novel computer assisted algorithm. All defects treated with rhBMP-2 healed. In contrast, the majority of the defects in the DBM (27/30) and control (28/30) groups did not heal. Quantitation of pre-osteoblasts demonstrated a maximal response (% GFP + cells/TV) in the Col3.6GFPtopaz mice at day 7 (7.2% ± 6.0, p < 0.05 compared to days 14, 21, 28, and 56). The maximal response of the Col2.3GFP cells was seen at days 14 (8.04% ± 5.0) and 21 (8.31% ± 4.32), p < 0.05. In contrast, DBM and control groups showed a limited osteogenic response at all time points. In conclusion, we demonstrated that the BMP and DBM induce vastly different osteogenic responses which should influence their clinical application as bone graft substitutes.
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Affiliation(s)
- Farhang Alaee
- Department of Orthopaedic Surgery, New England Musculoskeletal Institute, University of Connecticut Health Center, Farmington, Connecticut, 06030
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Xin X, Jiang X, Wang L, Stover ML, Zhan S, Huang J, Goldberg AJ, Liu Y, Kuhn L, Reichenberger EJ, Rowe DW, Lichtler AC. A Site-Specific Integrated Col2.3GFP Reporter Identifies Osteoblasts Within Mineralized Tissue Formed In Vivo by Human Embryonic Stem Cells. Stem Cells Transl Med 2014; 3:1125-37. [PMID: 25122686 DOI: 10.5966/sctm.2013-0128] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The use of human embryonic stem cells (hESCs) and induced pluripotent stem cells (iPSCs) for study and treatment of bone diseases or traumatic bone injuries requires efficient protocols to differentiate hESCs/iPSCs into cells with osteogenic potential and the ability to isolate differentiated osteoblasts for analysis. We have used zinc finger nuclease technology to deliver a construct containing the Col2.3 promoter driving GFPemerald to the AAVS1 site (referred to as a "safe harbor" site), in human embryonic stem cells (H9Zn2.3GFP), with the goal of marking the cells that have become differentiated osteoblasts. In teratomas formed using these cells, we identified green fluorescent protein (GFP)-positive cells specifically associated with in vivo bone formation. We also differentiated the cells into a mesenchymal stem cell population with osteogenic potential and implanted them into a mouse calvarial defect model. We observed GFP-positive cells associated with alizarin complexone-labeled newly formed bone surfaces. The cells were alkaline phosphatase-positive, and immunohistochemistry with human specific bone sialoprotein (BSP) antibody indicates that the GFP-positive cells are also associated with the human BSP-containing matrix, demonstrating that the Col2.3GFP construct marks cells in the osteoblast lineage. Single-cell cloning generated a 100% Col2.3GFP-positive cell population, as demonstrated by fluorescence in situ hybridization using a GFP probe. The karyotype was normal, and pluripotency was demonstrated by Tra1-60 immunostaining, pluripotent low density reverse transcription-polymerase chain reaction array and embryoid body formation. These cells will be useful to develop optimal osteogenic differentiation protocols and to isolate osteoblasts from normal and diseased iPSCs for analysis.
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Affiliation(s)
- Xiaonan Xin
- Department of Reconstructive Sciences, University of Connecticut Health Center, Farmington, Connecticut, USA
| | - Xi Jiang
- Department of Reconstructive Sciences, University of Connecticut Health Center, Farmington, Connecticut, USA
| | - Liping Wang
- Department of Reconstructive Sciences, University of Connecticut Health Center, Farmington, Connecticut, USA
| | - Mary Louise Stover
- Department of Reconstructive Sciences, University of Connecticut Health Center, Farmington, Connecticut, USA
| | - Shuning Zhan
- Department of Reconstructive Sciences, University of Connecticut Health Center, Farmington, Connecticut, USA
| | - Jianping Huang
- Department of Reconstructive Sciences, University of Connecticut Health Center, Farmington, Connecticut, USA
| | - A Jon Goldberg
- Department of Reconstructive Sciences, University of Connecticut Health Center, Farmington, Connecticut, USA
| | - Yongxing Liu
- Department of Reconstructive Sciences, University of Connecticut Health Center, Farmington, Connecticut, USA
| | - Liisa Kuhn
- Department of Reconstructive Sciences, University of Connecticut Health Center, Farmington, Connecticut, USA
| | - Ernst J Reichenberger
- Department of Reconstructive Sciences, University of Connecticut Health Center, Farmington, Connecticut, USA
| | - David W Rowe
- Department of Reconstructive Sciences, University of Connecticut Health Center, Farmington, Connecticut, USA
| | - Alexander C Lichtler
- Department of Reconstructive Sciences, University of Connecticut Health Center, Farmington, Connecticut, USA
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Villa MM, Wang L, Huang J, Rowe DW, Wei M. Bone tissue engineering with a collagen-hydroxyapatite scaffold and culture expanded bone marrow stromal cells. J Biomed Mater Res B Appl Biomater 2014; 103:243-53. [PMID: 24909953 DOI: 10.1002/jbm.b.33225] [Citation(s) in RCA: 91] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2014] [Revised: 05/06/2014] [Accepted: 05/17/2014] [Indexed: 01/18/2023]
Abstract
Osteoprogenitor cells combined with supportive biomaterials represent a promising approach to advance the standard of care for bone grafting procedures. However, this approach faces challenges, including inconsistent bone formation, cell survival in the implant, and appropriate biomaterial degradation. We have developed a collagen-hydroxyapatite (HA) scaffold that supports consistent osteogenesis by donor-derived osteoprogenitors, and is more easily degraded than a pure ceramic scaffold. Herein, the material properties are characterized as well as cell attachment, viability, and progenitor distribution in vitro. Furthermore, we examined the biological performance in vivo in a critical-size mouse calvarial defect. To aid in the evaluation of the in-house collagen-HA scaffold, the in vivo performance was compared with a commercial collagen-HA scaffold (Healos(®) , Depuy). The in-house collagen-HA scaffold supported consistent bone formation by predominantly donor-derived osteoblasts, nearly completely filling a 3.5 mm calvarial defect with bone in all samples (n = 5) after 3 weeks of implantation. In terms of bone formation and donor cell retention at 3 weeks postimplantation, no statistical difference was found between the in-house and commercial scaffold following quantitative histomorphometry. The collagen-HA scaffold presented here is an open and well-defined platform that supports robust bone formation and should facilitate the further development of collagen-hydroxyapatite biomaterials for bone tissue engineering.
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Affiliation(s)
- Max M Villa
- Department of Materials Science and Engineering, University of Connecticut, Storrs, Connecticut, 06269-3136
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Dyment NA, Hagiwara Y, Matthews BG, Li Y, Kalajzic I, Rowe DW. Lineage tracing of resident tendon progenitor cells during growth and natural healing. PLoS One 2014; 9:e96113. [PMID: 24759953 PMCID: PMC3997569 DOI: 10.1371/journal.pone.0096113] [Citation(s) in RCA: 107] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2014] [Accepted: 04/02/2014] [Indexed: 02/07/2023] Open
Abstract
Unlike during embryogenesis, the identity of tissue resident progenitor cells that contribute to postnatal tendon growth and natural healing is poorly characterized. Therefore, we utilized 1) an inducible Cre driven by alpha smooth muscle actin (SMACreERT2), that identifies mesenchymal progenitors, 2) a constitutively active Cre driven by growth and differentiation factor 5 (GDF5Cre), a critical regulator of joint condensation, in combination with 3) an Ai9 Cre reporter to permanently label SMA9 and GDF5-9 populations and their progeny. In growing mice, SMA9+ cells were found in peritendinous structures and scleraxis-positive (ScxGFP+) cells within the tendon midsubstance and myotendinous junction. The progenitors within the tendon midsubstance were transiently labeled as they displayed a 4-fold expansion from day 2 to day 21 but reduced to baseline levels by day 70. SMA9+ cells were not found within tendon entheses or ligaments in the knee, suggesting a different origin. In contrast to the SMA9 population, GDF5-9+ cells extended from the bone through the enthesis and into a portion of the tendon midsubstance. GDF5-9+ cells were also found throughout the length of the ligaments, indicating a significant variation in the progenitors that contribute to tendons and ligaments. Following tendon injury, SMA9+ paratenon cells were the main contributors to the healing response. SMA9+ cells extended over the defect space at 1 week and differentiated into ScxGFP+ cells at 2 weeks, which coincided with increased collagen signal in the paratenon bridge. Thus, SMA9-labeled cells represent a unique progenitor source that contributes to the tendon midsubstance, paratenon, and myotendinous junction during growth and natural healing, while GDF5 progenitors contribute to tendon enthesis and ligament development. Understanding the mechanisms that regulate the expansion and differentiation of these progenitors may prove crucial to improving future repair strategies.
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Affiliation(s)
- Nathaniel A. Dyment
- Department of Reconstructive Sciences, College of Dental Medicine, University of Connecticut Health Center, Farmington, Connecticut, United States of America
| | - Yusuke Hagiwara
- Department of Reconstructive Sciences, College of Dental Medicine, University of Connecticut Health Center, Farmington, Connecticut, United States of America
| | - Brya G. Matthews
- Department of Reconstructive Sciences, College of Dental Medicine, University of Connecticut Health Center, Farmington, Connecticut, United States of America
| | - Yingcui Li
- Department of Reconstructive Sciences, College of Dental Medicine, University of Connecticut Health Center, Farmington, Connecticut, United States of America
- Department of Biology, College of Arts and Sciences, University of Hartford, Hartford, Connecticut, United States of America
| | - Ivo Kalajzic
- Department of Reconstructive Sciences, College of Dental Medicine, University of Connecticut Health Center, Farmington, Connecticut, United States of America
| | - David W. Rowe
- Department of Reconstructive Sciences, College of Dental Medicine, University of Connecticut Health Center, Farmington, Connecticut, United States of America
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Gohil SV, Adams DJ, Maye P, Rowe DW, Nair LS. Evaluation of rhBMP-2 and bone marrow derived stromal cell mediated bone regeneration using transgenic fluorescent protein reporter mice. J Biomed Mater Res A 2014; 102:4568-80. [PMID: 24677665 DOI: 10.1002/jbm.a.35122] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2013] [Revised: 01/17/2014] [Accepted: 02/10/2014] [Indexed: 01/08/2023]
Abstract
The aim of the study is use of transgenic fluorescent protein reporter mouse models to understand the cellular processes in recombinant human bone morphogenetic protein-2 (rhBMP-2) mediated bone formation. Bilateral parietal calvarial bone defects in Col3.6Topaz transgenic fluorescent osteoblast reporter mouse were used to understand the bone formation in the presence and absence of rhBMP2 and/or Col3.6Cyan bone marrow derived stromal cells (BMSCs), using collagen-hydroxyapatite matrix (Healos) as a biomaterial. The bone regeneration was not confined to the site of BMP-2 implantation and significant bone formation was observed in the neighboring defect site. Osteogenic cellular activity with overlying alizarin complexone staining was observed in both the defects indicating host cell induced mineralization. However, implantation of BMSCs along with rhBMP-2 demonstrated a donor cell derived bone formation. The presence of rhBMP-2 did not support host cell recruitment in the presence of donor cells. This study demonstrates the potential of multiple fluorescent reporters to understand the cellular processes involved in the bone regeneration process using biomaterials, growth factors, and/or stem cells.
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Affiliation(s)
- Shalini V Gohil
- Department of Orthopedic Surgery, University of Connecticut Health Center, Farmington, Connecticut, 06032; Institute for Regenerative Engineering, The Raymond Beverly Sackler Center for Biomedical, Biological, Physical and Engineering Sciences, University of Connecticut Health Center, Farmington, Connecticut, 06032
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43
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Kuhn LT, Liu Y, Boyd NL, Dennis JE, Jiang X, Xin X, Charles LF, Wang L, Aguila HL, Rowe DW, Lichtler AC, Goldberg AJ. Developmental-like bone regeneration by human embryonic stem cell-derived mesenchymal cells. Tissue Eng Part A 2013; 20:365-77. [PMID: 23952622 DOI: 10.1089/ten.tea.2013.0321] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
Abstract
The in vivo osteogenesis potential of mesenchymal-like cells derived from human embryonic stem cells (hESC-MCs) was evaluated in vivo by implantation on collagen/hydroxyapatite scaffolds into calvarial defects in immunodeficient mice. This study is novel because no osteogenic or chondrogenic differentiation protocols were applied to the cells prior to implantation. After 6 weeks, X-ray, microCT, and histological analysis showed that the hESC-MCs had consistently formed a highly vascularized new bone that bridged the bone defect and seamlessly integrated with host bone. The implanted hESC-MCs differentiated in situ to functional hypertrophic chondrocytes, osteoblasts, and osteocytes forming new bone tissue via an endochondral ossification pathway. Evidence for the direct participation of the human cells in bone morphogenesis was verified by two separate assays: with Alu and by human mitochondrial antigen positive staining in conjunction with co-localized expression of human bone sialoprotein in histologically verified regions of new bone. The large volume of new bone in a calvarial defect and the direct participation of the hESC-MCs far exceeds that of previous studies and that of the control adult hMSCs. This study represents a key step forward for bone tissue engineering because of the large volume, vascularity, and reproducibility of new bone formation and the discovery that it is advantageous to not over-commit these progenitor cells to a particular lineage prior to implantation. The hESC-MCs were able to recapitulate the mesenchymal developmental pathway and were able to repair the bone defect semi-autonomously without preimplantation differentiation to osteo- or chondroprogenitors.
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Affiliation(s)
- Liisa T Kuhn
- 1 Department of Reconstructive Sciences, Center for Biomaterials, School of Dental Medicine, University of Connecticut Health Center , Farmington, Connecticut
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44
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Liu Y, Strecker S, Wang L, Kronenberg MS, Wang W, Rowe DW, Maye P. Osterix-cre labeled progenitor cells contribute to the formation and maintenance of the bone marrow stroma. PLoS One 2013; 8:e71318. [PMID: 23951132 PMCID: PMC3738599 DOI: 10.1371/journal.pone.0071318] [Citation(s) in RCA: 96] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2013] [Accepted: 07/04/2013] [Indexed: 11/29/2022] Open
Abstract
We have carried out fate mapping studies using Osterix-EGFPCre and Osterix-CreERt animal models and found Cre reporter expression in many different cell types that make up the bone marrow stroma. Constitutive fate mapping resulted in the labeling of different cellular components located throughout the bone marrow, whereas temporal fate mapping at E14.5 resulted in the labeling of cells within a region of the bone marrow. The identity of cell types marked by constitutive and temporal fate mapping included osteoblasts, adipocytes, vascular smooth muscle, perineural, and stromal cells. Prolonged tracing of embryonic precursors labeled at E14.5dpc revealed the continued existence of their progeny up to 10 months of age, suggesting that fate mapped, labeled embryonic precursors gave rise to long lived bone marrow progenitor cells. To provide further evidence for the marking of bone marrow progenitors, bone marrow cultures derived from Osterix-EGFPCre/Ai9 mice showed that stromal cells retained Cre reporter expression and yielded a FACS sorted population that was able to differentiate into osteoblasts, adipocytes, and chondrocytes in vitro and into osteoblasts, adipocytes, and perivascular stromal cells after transplantation. Collectively, our studies reveal the developmental process by which Osterix-Cre labeled embryonic progenitors give rise to adult bone marrow progenitors which establish and maintain the bone marrow stroma.
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Affiliation(s)
- Yaling Liu
- Department of Reconstructive Sciences, University of Connecticut Health Center, Farmington, Connecticut, United States of America
| | - Sara Strecker
- Department of Reconstructive Sciences, University of Connecticut Health Center, Farmington, Connecticut, United States of America
| | - Liping Wang
- Department of Reconstructive Sciences, University of Connecticut Health Center, Farmington, Connecticut, United States of America
| | - Mark S. Kronenberg
- Department of Reconstructive Sciences, University of Connecticut Health Center, Farmington, Connecticut, United States of America
| | - Wen Wang
- Department of Reconstructive Sciences, University of Connecticut Health Center, Farmington, Connecticut, United States of America
| | - David W. Rowe
- Department of Reconstructive Sciences, University of Connecticut Health Center, Farmington, Connecticut, United States of America
| | - Peter Maye
- Department of Reconstructive Sciences, University of Connecticut Health Center, Farmington, Connecticut, United States of America
- * E-mail:
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45
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Yang W, Guo D, Harris MA, Cui Y, Gluhak-Heinrich J, Wu J, Chen XD, Skinner C, Nyman JS, Edwards JR, Mundy GR, Lichtler A, Kream BE, Rowe DW, Kalajzic I, David V, Quarles DL, Villareal D, Scott G, Ray M, Liu S, Martin JF, Mishina Y, Harris SE. Bmp2 in osteoblasts of periosteum and trabecular bone links bone formation to vascularization and mesenchymal stem cells. J Cell Sci 2013; 126:4085-98. [PMID: 23843612 DOI: 10.1242/jcs.118596] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
We generated a new Bmp2 conditional-knockout allele without a neo cassette that removes the Bmp2 gene from osteoblasts (Bmp2-cKO(ob)) using the 3.6Col1a1-Cre transgenic model. Bones of Bmp2-cKO(ob) mice are thinner, with increased brittleness. Osteoblast activity is reduced as reflected in a reduced bone formation rate and failure to differentiate to a mature mineralizing stage. Bmp2 in osteoblasts also indirectly controls angiogenesis in the periosteum and bone marrow. VegfA production is reduced in Bmp2-cKO(ob) osteoblasts. Deletion of Bmp2 in osteoblasts also leads to defective mesenchymal stem cells (MSCs), which correlates with the reduced microvascular bed in the periosteum and trabecular bones. Expression of several MSC marker genes (α-SMA, CD146 and Angiopoietin-1) in vivo, in vitro CFU assays and deletion of Bmp2 in vitro in α-SMA(+) MSCs support our conclusions. Critical roles of Bmp2 in osteoblasts and MSCs are a vital link between bone formation, vascularization and mesenchymal stem cells.
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Affiliation(s)
- Wuchen Yang
- Department of Periodontics, University of Texas Health Science Center at San Antonio, San Antonio, TX 78229, USA
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46
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Villa MM, Wang L, Huang J, Rowe DW, Wei M. Visualizing osteogenesis in vivo within a cell-scaffold construct for bone tissue engineering using two-photon microscopy. Tissue Eng Part C Methods 2013; 19:839-49. [PMID: 23641794 DOI: 10.1089/ten.tec.2012.0490] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
Tissue-engineering therapies have shown early success in the clinic, however, the cell-biomaterial interactions that result in successful outcomes are not yet well understood and are difficult to observe. Here we describe a method for visualizing bone formation within a tissue-engineered construct in vivo, at a single-cell resolution, and in situ in three dimensions using two-photon microscopy. First, two-photon microscopy and histological perspectives were spatially linked using fluorescent reporters for cells in the skeletal lineage. In the process, the tissue microenvironment that precedes a repair-focused study was described. The distribution and organization of type I collagen in the calvarial microenvironment was also described using its second harmonic signal. Second, this platform was used to observe in vivo, for the first time, host cells, donor cells, scaffold, and new bone formation within cell-seeded constructs in a bone defect. We examined constructs during bone repair 4 and 6 weeks after implantation. New bone formed on scaffolds, primarily by donor cells. Host cells formed a new periosteal layer that covered the implant. Scaffold resorption appeared to be site specific, where areas near the top were removed and deeper areas were completely embedded in new mineral. Visualizing the in vivo progression of the cell and scaffold microenvironment will contribute to our understanding of tissue-engineered regeneration and should lead to the development of more streamlined and therapeutically powerful approaches.
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Affiliation(s)
- Max M Villa
- 1 Department of Materials Science and Engineering, University of Connecticut , Storrs, Connecticut
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47
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Dyment NA, Liu CF, Kazemi N, Aschbacher-Smith LE, Kenter K, Breidenbach AP, Shearn JT, Wylie C, Rowe DW, Butler DL. The paratenon contributes to scleraxis-expressing cells during patellar tendon healing. PLoS One 2013; 8:e59944. [PMID: 23555841 PMCID: PMC3608582 DOI: 10.1371/journal.pone.0059944] [Citation(s) in RCA: 100] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2012] [Accepted: 02/19/2013] [Indexed: 01/27/2023] Open
Abstract
The origin of cells that contribute to tendon healing, specifically extrinsic epitenon/paratenon cells vs. internal tendon fibroblasts, is still debated. The purpose of this study is to determine the location and phenotype of cells that contribute to healing of a central patellar tendon defect injury in the mouse. Normal adult patellar tendon consists of scleraxis-expressing (Scx) tendon fibroblasts situated among aligned collagen fibrils. The tendon body is surrounded by paratenon, which consists of a thin layer of cells that do not express Scx and collagen fibers oriented circumferentially around the tendon. At 3 days following injury, the paratenon thickens as cells within the paratenon proliferate and begin producing tenascin-C and fibromodulin. These cells migrate toward the defect site and express scleraxis and smooth muscle actin alpha by day 7. The thickened paratenon tissue eventually bridges the tendon defect by day 14. Similarly, cells within the periphery of the adjacent tendon struts express these markers and become disorganized. Cells within the defect region show increased expression of fibrillar collagens (Col1a1 and Col3a1) but decreased expression of tenogenic transcription factors (scleraxis and mohawk homeobox) and collagen assembly genes (fibromodulin and decorin). By contrast, early growth response 1 and 2 are upregulated in these tissues along with tenascin-C. These results suggest that paratenon cells, which normally do not express Scx, respond to injury by turning on Scx and assembling matrix to bridge the defect. Future studies are needed to determine the signaling pathways that drive these cells and whether they are capable of producing a functional tendon matrix. Understanding this process may guide tissue engineering strategies in the future by stimulating these cells to improve tendon repair.
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Affiliation(s)
- Nathaniel A Dyment
- Department of Reconstructive Sciences, College of Dental Medicine, University of Connecticut Health Center, Farmington, Connecticut, United States of America.
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48
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Grcevic D, Pejda S, Matthews BG, Repic D, Wang L, Li H, Kronenberg MS, Jiang X, Maye P, Adams DJ, Rowe DW, Aguila HL, Kalajzic I. In vivo fate mapping identifies mesenchymal progenitor cells. Stem Cells 2012; 30:187-96. [PMID: 22083974 DOI: 10.1002/stem.780] [Citation(s) in RCA: 176] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Adult mesenchymal progenitor cells have enormous potential for use in regenerative medicine. However, the true identity of the progenitors in vivo and their progeny has not been precisely defined. We hypothesize that cells expressing a smooth muscle α-actin promoter (αSMA)-directed Cre transgene represent mesenchymal progenitors of adult bone tissue. By combining complementary colors in combination with transgenes activating at mature stages of the lineage, we characterized the phenotype and confirmed the ability of isolated αSMA(+) cells to progress from a progenitor to fully mature state. In vivo lineage tracing experiments using a new bone formation model confirmed the osteogenic phenotype of αSMA(+) cells. In vitro analysis of the in vivo-labeled SMA9(+) cells supported their differentiation potential into mesenchymal lineages. Using a fracture-healing model, αSMA9(+) cells served as a pool of fibrocartilage and skeletal progenitors. Confirmation of the transition of αSMA9(+) progenitor cells to mature osteoblasts during fracture healing was assessed by activation of bone-specific Col2.3emd transgene. Our findings provide a novel in vivo identification of defined population of mesenchymal progenitor cells with active role in bone remodeling and regeneration.
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Affiliation(s)
- Danka Grcevic
- Department of Physiology and Immunology, School of Medicine, University of Zagreb, Zagreb Croatia
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49
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Abstract
A Bayesian network model can be used to study the structures of gene regulatory networks. It has the ability to integrate information from both prior knowledge and experimental data. In this study, we propose an approach to efficiently integrate global ordering information into model learning, where the ordering information specifies the indirect relationships among genes. We demonstrate that, compared with a traditional Bayesian network model that uses only local prior knowledge, utilising additional global ordering knowledge can significantly improve the model's performance. The magnitude of this improvement depends on abundance of global ordering information and data quality.
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Affiliation(s)
- Baikang Pei
- Department of Computer Science and Engineering, University of Connecticut, Storrs, CT 06269, USA.
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50
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Abstract
GFP reporter mice previously developed to assess levels of osteoblast differentiation were employed in a tibial long bone fracture model using a histological method that preserves fluorescent signals in non-decalcified sections of bone. Two reporters, based on Col1A1 (Col3.6GFPcyan) and osteocalcin (OcGFPtpz) promoter fragments, were bred into the same mice to reflect an early and late stage of osteoblast differentiation. Three observations were apparent from this examination. First, the osteoprogenitor cells that arise from the flanking periosteum proliferate and progress to fill the fracture zone. These cells differentiate to osteoblasts, chondrocytes, to from the outer cortical shell. Second, the hypertrophic chondrocytes are dispersed and the cartilage matrix mineralized by the advancing Col3.6+ osteoblasts. The endochondral matrix is removed by the following osteoclasts. Third, a new cortical shell develops over the cartilage core and undergoes a remodeling process of bone formation on the inner surface and resorption on the outer surface. The original fractured cortex undergoes resorption as the outer cortical shell remodels inward to become the new diaphyseal bone. The fluorescent microscopy and GFP reporter mice used in this study provide a powerful tool for appreciating the molecular and cellular processes that control these fundamental steps in fracture repair, and may provide a basis for understanding fracture nonunion.
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Affiliation(s)
- Chikara Ushiku
- Department of Orthopedic Surgery, New England Musculoskeletal Institute, School of Medicine, University of Connecticut Health Center, Farmington, Connecticut 06032, USA
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