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Das P, Hore A, Ghosh A, Datta P. Bone tissue engineering construct fabricated using a cell electrospinning technique with polyglutamic acid biopolymer. JOURNAL OF POLYMER RESEARCH 2021. [DOI: 10.1007/s10965-021-02612-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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2
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Zhang X, Jia Q, Li M, Liu H, Wang Q, Wu Y, Niu L, Liu Z. Isolation of a novel calcium-binding peptide from phosvitin hydrolysates and the study of its calcium chelation mechanism. Food Res Int 2021; 141:110169. [PMID: 33642025 DOI: 10.1016/j.foodres.2021.110169] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Revised: 01/11/2021] [Accepted: 01/18/2021] [Indexed: 11/15/2022]
Abstract
A new peptide with strong calcium binding capacity was isolated from phosvitin hydrolysates. Taking calcium chelating rate as an indicator, phosvitin hydrolysates were separated gradually by anion-exchange chromatography, gel filtration chromatography and reversed-phase high performance liquid chromatography. A peptide with a molecular weight of 1106.44402 Da was identified by liquid chromatography-electrospray/mass spectrometry (LC-ESI/MS), and its amino acid sequence was DEEENDQVK, the calcium binding capacity reached 151.10 ± 3.57 mg/g. Its chelating mechanism was investigated. Results showed that, the β-sheet structure of peptide increased after adding calcium ion, and the main binding sites were carboxyl oxygen atom and amino nitrogen atom. In vitro simulated digestion experiments showed that, the solubility and dialysis rate of calcium in peptide-calcium chelate were higher than those in CaCO3 and D-calcium gluconate. This finding would promote the development of calcium supplements from food resources.
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Affiliation(s)
- Xiaowei Zhang
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Food Nutrition and Safety, Ministry of Education of China, College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin 300457, PR China
| | - Qi Jia
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Food Nutrition and Safety, Ministry of Education of China, College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin 300457, PR China
| | - Mengyu Li
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Food Nutrition and Safety, Ministry of Education of China, College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin 300457, PR China
| | - Huiping Liu
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Food Nutrition and Safety, Ministry of Education of China, College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin 300457, PR China.
| | - Qing Wang
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Food Nutrition and Safety, Ministry of Education of China, College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin 300457, PR China
| | - Yaru Wu
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Food Nutrition and Safety, Ministry of Education of China, College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin 300457, PR China
| | - Lulu Niu
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Food Nutrition and Safety, Ministry of Education of China, College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin 300457, PR China
| | - Zitian Liu
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Food Nutrition and Safety, Ministry of Education of China, College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin 300457, PR China
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3
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Iline-Vul T, Nanda R, Mateos B, Hazan S, Matlahov I, Perelshtein I, Keinan-Adamsky K, Althoff-Ospelt G, Konrat R, Goobes G. Osteopontin regulates biomimetic calcium phosphate crystallization from disordered mineral layers covering apatite crystallites. Sci Rep 2020; 10:15722. [PMID: 32973201 PMCID: PMC7518277 DOI: 10.1038/s41598-020-72786-x] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Accepted: 09/07/2020] [Indexed: 02/06/2023] Open
Abstract
Details of apatite formation and development in bone below the nanometer scale remain enigmatic. Regulation of mineralization was shown to be governed by the activity of non-collagenous proteins with many bone diseases stemming from improper activity of these proteins. Apatite crystal growth inhibition or enhancement is thought to involve direct interaction of these proteins with exposed faces of apatite crystals. However, experimental evidence of the molecular binding events that occur and that allow these proteins to exert their functions are lacking. Moreover, recent high-resolution measurements of apatite crystallites in bone have shown that individual crystallites are covered by a persistent layer of amorphous calcium phosphate. It is therefore unclear whether non-collagenous proteins can interact with the faces of the mineral crystallites directly and what are the consequences of the presence of a disordered mineral layer to their functionality. In this work, the regulatory effect of recombinant osteopontin on biomimetic apatite is shown to produce platelet-shaped apatite crystallites with disordered layers coating them. The protein is also shown to regulate the content and properties of the disordered mineral phase (and sublayers within it). Through solid-state NMR atomic carbon-phosphorous distance measurements, the protein is shown to be located in the disordered phases, reaching out to interact with the surfaces of the crystals only through very few sidechains. These observations suggest that non-phosphorylated osteopontin acts as regulator of the coating mineral layers and exerts its effect on apatite crystal growth processes mostly from afar with a limited number of contact points with the crystal.
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Affiliation(s)
- Taly Iline-Vul
- Department of Chemistry, Bar Ilan University, 5290002, Ramat Gan, Israel
| | - Raju Nanda
- Department of Chemistry, Bar Ilan University, 5290002, Ramat Gan, Israel
| | - Borja Mateos
- Max F. Perutz Laboratories, Department of Computational and Structural Biology, University of Vienna, 1030, Vienna, Austria
| | - Shani Hazan
- Department of Chemistry, Bar Ilan University, 5290002, Ramat Gan, Israel
| | - Irina Matlahov
- Department of Chemistry, Bar Ilan University, 5290002, Ramat Gan, Israel
| | - Ilana Perelshtein
- Department of Chemistry, Bar Ilan University, 5290002, Ramat Gan, Israel
| | | | | | - Robert Konrat
- Max F. Perutz Laboratories, Department of Computational and Structural Biology, University of Vienna, 1030, Vienna, Austria
| | - Gil Goobes
- Department of Chemistry, Bar Ilan University, 5290002, Ramat Gan, Israel.
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Neubauer VJ, Scheibel T. Spider Silk Fusion Proteins for Controlled Collagen Binding and Biomineralization. ACS Biomater Sci Eng 2020; 6:5599-5608. [PMID: 33320578 DOI: 10.1021/acsbiomaterials.0c00818] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
The development of biomaterials for the interface between tendon and bone is important for realizing functional tendon replacements. Toward the development of new materials for such applications, engineered recombinant spider silk proteins were modified with peptide tag sequences derived from noncollagenous proteins in bone, so-called SIBLING proteins, such as osteopontin and sialoprotein, which are known to interact with collagen and to initiate mineralization. Materials made of these spider silk-SIBLING hybrids were analyzed concerning mineralization and interaction with cells. They showed enhanced calcium phosphate formation upon incubation in mineralization agents. In gradient films, MC3T3-E1 mouse preosteoblasts adhered preferentially along the gradient toward the variant with a collagen binding motif.
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Affiliation(s)
- Vanessa J Neubauer
- Lehrstuhl Biomaterialien, Fakultät für Ingenieurwissenschaften, Universität Bayreuth, Prof.-Rüdiger-Bormann-Straße 1, 95447 Bayreuth, Germany
| | - Thomas Scheibel
- Lehrstuhl Biomaterialien, Fakultät für Ingenieurwissenschaften, Universität Bayreuth, Prof.-Rüdiger-Bormann-Straße 1, 95447 Bayreuth, Germany.,Bayreuther Zentrum für Kolloide und Grenzflächen (BZKG), Universität Bayreuth, Universitätsstraße 30, 95440 Bayreuth, Germany.,Bayerisches Polymerinstitut (BPI), Universitätsstraße 30, 95440 Bayreuth, Germany.,Bayreuther Zentrum für Molekulare Biowissenschaften (BZMB), Universität Bayreuth, Universitätsstraße 30, 95440 Bayreuth, Germany.,Bayreuther Materialzentrum (BayMAT), Universität Bayreuth, Universitätsstraße 30, 95440 Bayreuth, Germany
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Zhang J, Wang L, Zhang W, Putnis CV. Phosphorylated/Nonphosphorylated Motifs in Amelotin Turn Off/On the Acidic Amorphous Calcium Phosphate-to-Apatite Phase Transformation. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:2102-2109. [PMID: 32036670 DOI: 10.1021/acs.langmuir.9b02735] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Amelotin (AMTN) as a matrix protein exerts a direct effect on biomineralization by modulating apatite (HAP) formation during the dental enamel maturation stage through the specific interaction of a potentially phosphorylated Ser-Ser-Glu-Glu-Leu (SSEEL) peptide fragment with calcium phosphate (Ca-P) surfaces. However, the roles of (non)phosphorylation of this evolutionarily conserved subdomain within AMTN remain poorly understood. Here, we show, by time-resolved atomic force microscopy (AFM) imaging of in situ HAP crystallization via the HPO42--rich amorphous calcium phosphate (acidic ACP), the on/off switching of the phase transformation process through a nonphosphorylation-to-phosphorylation transition of the SSEEL motif. Using high-resolution transmission electron microscopy (HRTEM), we observed that the acidic ACP phase is stabilized by the phosphorylated SSEEL motif, delaying its transformation to HAP, whereas the nonphosphorylated counterpart promotes HAP formation by accelerating the dissolution-recrystallization of the acidic ACP substrate. Dynamic force spectroscopy measurements demonstrate greater binding energies of nonphosphorylated SSEEL to the acidic ACP substrate by the formation of molecular peptide-ACP bonding, explaining the enhanced dissolution of the acidic ACP substrate by stronger complexion with surface Ca2+ ions. Our findings demonstrate direct evidence for the switching role of (non)phosphorylation of an evolutionarily conserved subdomain within AMTN in controlling the phase transition of growing enamel and designing tissue regeneration biomaterials.
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Affiliation(s)
- Jing Zhang
- College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China
| | - Lijun Wang
- College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China
| | - Wenjun Zhang
- College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China
| | - Christine V Putnis
- Institut für Mineralogie, University of Münster, 48149 Münster, Germany
- Department of Chemistry, Curtin University, Perth 6845, Australia
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Curry AS, Pensa NW, Barlow AM, Bellis SL. Taking cues from the extracellular matrix to design bone-mimetic regenerative scaffolds. Matrix Biol 2016; 52-54:397-412. [PMID: 26940231 DOI: 10.1016/j.matbio.2016.02.011] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2016] [Revised: 02/25/2016] [Accepted: 02/25/2016] [Indexed: 12/30/2022]
Abstract
There is an ongoing need for effective materials that can replace autologous bone grafts in the clinical treatment of bone injuries and deficiencies. In recent years, research efforts have shifted away from a focus on inert biomaterials to favor scaffolds that mimic the biochemistry and structure of the native bone extracellular matrix (ECM). The expectation is that such scaffolds will integrate with host tissue and actively promote osseous healing. To further enhance the osteoinductivity of bone graft substitutes, ECM-mimetic scaffolds are being engineered with a range of growth factors (GFs). The technologies used to generate GF-modified scaffolds are often inspired by natural processes that regulate the association between endogenous ECMs and GFs. The purpose of this review is to summarize research centered on the development of regenerative scaffolds that replicate the fundamental collagen-hydroxyapatite structure of native bone ECM, and the functionalization of these scaffolds with GFs that stimulate critical events in osteogenesis.
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Affiliation(s)
- Andrew S Curry
- Department of Biomedical Engineering, University of Alabama at Birmingham, 1918 University Boulevard, Birmingham, AL 35294, United States
| | - Nicholas W Pensa
- Department of Biomedical Engineering, University of Alabama at Birmingham, 1918 University Boulevard, Birmingham, AL 35294, United States
| | - Abby M Barlow
- Department of Cell, Developmental and Integrative Biology, University of Alabama at Birmingham, 1918 University Boulevard, Birmingham, AL 35294, United States
| | - Susan L Bellis
- Department of Biomedical Engineering, University of Alabama at Birmingham, 1918 University Boulevard, Birmingham, AL 35294, United States; Department of Cell, Developmental and Integrative Biology, University of Alabama at Birmingham, 1918 University Boulevard, Birmingham, AL 35294, United States.
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7
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Foster BL, Ao M, Willoughby C, Soenjaya Y, Holm E, Lukashova L, Tran AB, Wimer HF, Zerfas PM, Nociti FH, Kantovitz KR, Quan BD, Sone ED, Goldberg HA, Somerman MJ. Mineralization defects in cementum and craniofacial bone from loss of bone sialoprotein. Bone 2015; 78:150-64. [PMID: 25963390 PMCID: PMC4466207 DOI: 10.1016/j.bone.2015.05.007] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/11/2015] [Revised: 04/21/2015] [Accepted: 05/02/2015] [Indexed: 01/15/2023]
Abstract
Bone sialoprotein (BSP) is a multifunctional extracellular matrix protein found in mineralized tissues, including bone, cartilage, tooth root cementum (both acellular and cellular types), and dentin. In order to define the role BSP plays in the process of biomineralization of these tissues, we analyzed cementogenesis, dentinogenesis, and osteogenesis (intramembranous and endochondral) in craniofacial bone in Bsp null mice and wild-type (WT) controls over a developmental period (1-60 days post natal; dpn) by histology, immunohistochemistry, undecalcified histochemistry, microcomputed tomography (microCT), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and quantitative PCR (qPCR). Regions of intramembranous ossification in the alveolus, mandible, and calvaria presented delayed mineralization and osteoid accumulation, assessed by von Kossa and Goldner's trichrome stains at 1 and 14 dpn. Moreover, Bsp(-/-) mice featured increased cranial suture size at the early time point, 1 dpn. Immunostaining and PCR demonstrated that osteoblast markers, osterix, alkaline phosphatase, and osteopontin were unchanged in Bsp null mandibles compared to WT. Bsp(-/-) mouse molars featured a lack of functional acellular cementum formation by histology, SEM, and TEM, and subsequent loss of Sharpey's collagen fiber insertion into the tooth root structure. Bsp(-/-) mouse alveolar and mandibular bone featured equivalent or fewer osteoclasts at early ages (1 and 14 dpn), however, increased RANKL immunostaining and mRNA, and significantly increased number of osteoclast-like cells (2-5 fold) were found at later ages (26 and 60 dpn), corresponding to periodontal breakdown and severe alveolar bone resorption observed following molar teeth entering occlusion. Dentin formation was unperturbed in Bsp(-/-) mouse molars, with no delay in mineralization, no alteration in dentin dimensions, and no differences in odontoblast markers analyzed. No defects were identified in endochondral ossification in the cranial base, and craniofacial morphology was unaffected in Bsp(-/-) mice. These analyses confirm a critical role for BSP in processes of cementogenesis and intramembranous ossification of craniofacial bone, whereas endochondral ossification in the cranial base was minimally affected and dentinogenesis was normal in Bsp(-/-) molar teeth. Dissimilar effects of loss of BSP on mineralization of dental and craniofacial tissues suggest local differences in the role of BSP and/or yet to be defined interactions with site-specific factors.
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Affiliation(s)
- B L Foster
- National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIAMS), National Institutes of Health (NIH), 9000 Rockville Pike, 4120 Building 50, Bethesda, MD 20892, USA.
| | - M Ao
- National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIAMS), National Institutes of Health (NIH), 9000 Rockville Pike, 4120 Building 50, Bethesda, MD 20892, USA.
| | - C Willoughby
- National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIAMS), National Institutes of Health (NIH), 9000 Rockville Pike, 4120 Building 50, Bethesda, MD 20892, USA.
| | - Y Soenjaya
- Biomedical Engineering Program, Schulich School of Medicine & Dentistry, University of Western Ontario, London, ON N6A 5C1, Canada.
| | - E Holm
- Department of Biochemistry, Schulich School of Medicine & Dentistry, University of Western Ontario, London, ON N6A 5C1, Canada.
| | - L Lukashova
- Hospital for Special Surgery, 535 East 70th Street, New York, NY 10021, USA.
| | - A B Tran
- National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIAMS), National Institutes of Health (NIH), 9000 Rockville Pike, 4120 Building 50, Bethesda, MD 20892, USA.
| | - H F Wimer
- Department of Vertebrate Zoology, National Museum of Natural History, Smithsonian Institution, Washington, DC, USA.
| | - P M Zerfas
- Office of Research Services, Division of Veterinary Resources, National Institutes of Health (NIH), 9000 Rockville Pike, 112 Building 28A, MSC 5230, Bethesda, MD 20892, USA.
| | - F H Nociti
- National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIAMS), National Institutes of Health (NIH), 9000 Rockville Pike, 4120 Building 50, Bethesda, MD 20892, USA; Department of Prosthodontics and Periodontics, Division of Periodontics, School of Dentistry, Campinas State University, Piracicaba, SP 13414-903, Brazil.
| | - K R Kantovitz
- National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIAMS), National Institutes of Health (NIH), 9000 Rockville Pike, 4120 Building 50, Bethesda, MD 20892, USA; Department of Pediatric Dentistry, School of Dentistry, Campinas State University, Piracicaba, SP 13414-903, Brazil.
| | - B D Quan
- Institute of Biomaterials and Biomedical Engineering, University of Toronto, 320A Mining Building, Toronto, ON M5S 3G9, Canada.
| | - E D Sone
- Institute of Biomaterials and Biomedical Engineering, University of Toronto, 320A Mining Building, Toronto, ON M5S 3G9, Canada; Department of Materials Science and Engineering, University of Toronto, Toronto, ON, Canada; Faculty of Dentistry, University of Toronto, Toronto, ON, Canada.
| | - H A Goldberg
- Biomedical Engineering Program, Schulich School of Medicine & Dentistry, University of Western Ontario, London, ON N6A 5C1, Canada; Department of Biochemistry, Schulich School of Medicine & Dentistry, University of Western Ontario, London, ON N6A 5C1, Canada; School of Dentistry, Schulich School of Medicine & Dentistry, University of Western Ontario, London, ON N6A 5C1, Canada.
| | - M J Somerman
- National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIAMS), National Institutes of Health (NIH), 9000 Rockville Pike, 4120 Building 50, Bethesda, MD 20892, USA.
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Wang R, Wang Q, Wang X, Tian L, Liu H, Zhao M, Peng C, Cai Q, Shi Y. Enhancement of nano-hydroxyapatite bonding to dentin through a collagen/calcium dual-affinitive peptide for dentinal tubule occlusion. J Biomater Appl 2014; 29:268-277. [DOI: 10.1177/0885328214523057] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Calcium phosphate crystals, as the main component of dentin and enamel, have been widely used for the occlusion of dentinal tubules. However, the low bond strength and poor sealing effect limit their clinical practicality. In this study, a collagen/calcium dual-affinitive peptide E8DS (EEEEEEEEDSpESpSpEEDR) and nano-hydroxyapatite (nano-HAp) flocculi were developed to seal dentin tubules for reducing dentin hypersensitivity, whereas the E8DS peptides were pre-applied to improve the adhesion of occlusive hydroxyapatite coating on dentin collagen matrix for the long-lasting sealing effect and relief from hypersensitivity. Our study showed that E8DS peptides had a strong affinity with dentin collageneous matrix that almost 43.7% of initial E8DS peptides immobilized on exposed dentin samples remained detained after continuous washing by distilled water for four weeks at a rate of 1 mL/min. Nano-HAp flocculi were obtained by re-neutralization of HAp-HCl solution and then brushed onto the surfaces of pre-treated human dentin disks with E8DS peptides, which showed a perfect occlusion of exposed dentinal tubules, as compared with Nano-HAp only and a commercial desensitizer, Green Or. With only around 10-min E8DS peptide pre-treatment, the occlusive mineral layers remained intact against consecutively stirred washing in phosphate-buffered saline or coke for 15 min, and 6 min of tooth-brushing, which implied that our E8DS peptide could comparatively improve the durability of sealant-dentin interface bonds for long-lasting dentine desensitization.
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Affiliation(s)
- Ronghan Wang
- State Key Laboratory of New Ceramic & Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing, China
| | - Qiong Wang
- State Key Laboratory of New Ceramic & Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing, China
| | - Xiumei Wang
- State Key Laboratory of New Ceramic & Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing, China
| | - Lili Tian
- Department of Stomatology, China-Japan Friendship Hospital, Beijing, China
| | - Huiying Liu
- Department of Oral and Maxillofacial, School of Stomatology, Dalian Medical University, Dalian, China
| | - Miaomiao Zhao
- Department of Oral and Maxillofacial, School of Stomatology, Dalian Medical University, Dalian, China
| | - Ce Peng
- State Key Laboratory of New Ceramic & Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing, China
| | - Qiang Cai
- State Key Laboratory of New Ceramic & Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing, China
| | - Yunming Shi
- Crest Research Institute, P&G Technology (Beijing) Co., Ltd., Beijing, China
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Sun J, Chen C, Pan H, Chen Y, Mao C, Wang W, Tang R, Gu X. Biomimetic promotion of dentin remineralization usingl-glutamic acid: inspiration from biomineralization proteins. J Mater Chem B 2014; 2:4544-4553. [PMID: 32261555 DOI: 10.1039/c4tb00451e] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
The decalcified dentin layer was remineralized in two days using the cooperative effect of PAA and Glu.
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Affiliation(s)
- Jian Sun
- First Affiliated Hospital of Zhejiang University College of Medicine
- Hangzhou, China
| | - Chaoqun Chen
- First Affiliated Hospital of Zhejiang University College of Medicine
- Hangzhou, China
| | - Haihua Pan
- Qiushi Academy for Advanced Studies
- Zhejiang University
- Hangzhou, China
| | - Yi Chen
- First Affiliated Hospital of Zhejiang University College of Medicine
- Hangzhou, China
| | - Caiyun Mao
- First Affiliated Hospital of Zhejiang University College of Medicine
- Hangzhou, China
| | - Wei Wang
- First Affiliated Hospital of Zhejiang University College of Medicine
- Hangzhou, China
| | - Ruikang Tang
- Centre of Biopathways and Biomaterials
- Department of Chemistry
- Zhejiang University
- Hangzhou, China
| | - Xinhua Gu
- First Affiliated Hospital of Zhejiang University College of Medicine
- Hangzhou, China
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10
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Tormo AJ, Beaupré LA, Elson G, Crabé S, Gauchat JF. A polyglutamic acid motif confers IL-27 hydroxyapatite and bone-binding properties. THE JOURNAL OF IMMUNOLOGY 2013; 190:2931-7. [PMID: 23390294 DOI: 10.4049/jimmunol.1201460] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
The p28 subunit of the composite cytokine IL-27 comprises a polyglutamic acid domain, which is unique among type I cytokines. This domain is very similar to the acidic domain known to confer hydroxyapatite (HA)-binding properties and bone tropism to bone sialoprotein. We observed IL-27 binding to HA, in accordance with previous studies reporting successful p28 HA chromatography. The IL-27 polyglutamic acid domain is located in a flexible inter-α helix loop, and HA-bound IL-27 retained biological activity. Using IL-27 alanine mutants, we observed that the p28 polyglutamic acid domain confers HA- and bone-binding properties to IL-27 in vitro and bone tropism in vivo. Because IL-27 is a potent regulator of cells residing in endosteal bone marrow niches such as osteoclasts, T regulatory, memory T, plasma, and stem cells, this specific property could be beneficial for therapeutic applications. IL-27 has potent antitumoral and antiosteoclastogenic activities. It could therefore also be useful for therapies targeting hematologic cancer or solid tumors metastasis with bone tropism. Furthermore, these observations suggest that polyglutamic motifs could be grafted onto other type I cytokine inter-α helix loops to modify their pharmacological properties.
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Affiliation(s)
- Aurélie Jeanne Tormo
- Département de Pharmacologie, Université de Montréal, Montreal, Quebec H3T1J4, Canada
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11
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Gungormus M, Oren EE, Horst JA, Fong H, Hnilova M, Somerman MJ, Snead ML, Samudrala R, Tamerler C, Sarikaya M. Cementomimetics-constructing a cementum-like biomineralized microlayer via amelogenin-derived peptides. Int J Oral Sci 2012; 4:69-77. [PMID: 22743342 PMCID: PMC3412665 DOI: 10.1038/ijos.2012.40] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2012] [Accepted: 05/03/2012] [Indexed: 01/09/2023] Open
Abstract
Cementum is the outer-, mineralized-tissue covering the tooth root and an essential part of the system of periodontal tissue that anchors the tooth to the bone. Periodontal disease results from the destructive behavior of the host elicited by an infectious biofilm adhering to the tooth root and left untreated, may lead to tooth loss. We describe a novel protocol for identifying peptide sequences from native proteins with the potential to repair damaged dental tissues by controlling hydroxyapatite biomineralization. Using amelogenin as a case study and a bioinformatics scoring matrix, we identified regions within amelogenin that are shared with a set of hydroxyapatite-binding peptides (HABPs) previously selected by phage display. One 22-amino acid long peptide regions referred to as amelogenin-derived peptide 5 (ADP5) was shown to facilitate cell-free formation of a cementum-like hydroxyapatite mineral layer on demineralized human root dentin that, in turn, supported attachment of periodontal ligament cells in vitro. Our findings have several implications in peptide-assisted mineral formation that mimic biomineralization. By further elaborating the mechanism for protein control over the biomineral formed, we afford new insights into the evolution of protein-mineral interactions. By exploiting small peptide domains of native proteins, our understanding of structure-function relationships of biomineralizing proteins can be extended and these peptides can be utilized to engineer mineral formation. Finally, the cementomimetic layer formed by ADP5 has the potential clinical application to repair diseased root surfaces so as to promote the regeneration of periodontal tissues and thereby reduce the morbidity associated with tooth loss.
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Affiliation(s)
- Mustafa Gungormus
- Department of Materials Science and Engineering, University of Washington, Seattle, WA, USA
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12
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Variola F, Brunski J, Orsini G, de Oliveira PT, Wazen R, Nanci A. Nanoscale surface modifications of medically relevant metals: state-of-the art and perspectives. NANOSCALE 2011; 3:335-53. [PMID: 20976359 PMCID: PMC3105323 DOI: 10.1039/c0nr00485e] [Citation(s) in RCA: 116] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Evidence that nanoscale surface properties stimulate and guide various molecular and biological processes at the implant/tissue interface is fostering a new trend in designing implantable metals. Cutting-edge expertise and techniques drawn from widely separated fields, such as nanotechnology, materials engineering and biology, have been advantageously exploited to nanoengineer surfaces in ways that control and direct these processes in predictable manners. In this review, we present and discuss the state-of-the-art of nanotechnology-based approaches currently adopted to modify the surface of metals used for orthopedic and dental applications, and also briefly consider their use in the cardiovascular field. The effects of nanoengineered surfaces on various in vitro molecular and cellular events are firstly discussed. This review also provides an overview of in vivo and clinical studies with nanostructured metallic implants, and addresses the potential influence of nanotopography on biomechanical events at interfaces. Ultimately, the objective of this work is to give the readership a comprehensive picture of the current advances, future developments and challenges in the application of the infinitesimally small to biomedical surface science. We believe that an integrated understanding of the in vitro and particularly of the in vivo behavior is mandatory for the proper exploitation of nanostructured implantable metals and, indeed, of all biomaterials.
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Affiliation(s)
- Fabio Variola
- Faculty of Engineering, Department of Mechanical Engineering, University of Ottawa, Ottawa, ON, K1N 6N5 (Canada)
- Laboratory for the Study of Calcified Tissues and Biomaterials, Faculté de Médecine Dentaire, Université de Montréal, Montréal, QC, H3C 3J7 (Canada)
| | - John Brunski
- Division of Plastic & Reconstructive Surgery, Department of Surgery PSRL, School of Medicine, Stanford University, 257 Campus Drive Stanford, CA 94305 (USA)
| | - Giovanna Orsini
- Department of Clinical Sciences and Stomatology, University of Marche, Via Tronto 10, 66026 Ancona (Italy)
| | - Paulo Tambasco de Oliveira
- Department of Morphology, Stomatology and Physiology, University of São Paulo, Ribeirão Preto, SP, 14040-904 (Brazil)
| | - Rima Wazen
- Laboratory for the Study of Calcified Tissues and Biomaterials, Faculté de Médecine Dentaire, Université de Montréal, Montréal, QC, H3C 3J7 (Canada)
| | - Antonio Nanci
- Laboratory for the Study of Calcified Tissues and Biomaterials, Faculté de Médecine Dentaire, Université de Montréal, Montréal, QC, H3C 3J7 (Canada)
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Advani A, Kelly DJ, Cox AJ, White KE, Advani SL, Thai K, Connelly KA, Yuen D, Trogadis J, Herzenberg AM, Kuliszewski MA, Leong-Poi H, Gilbert RE. The (Pro)renin receptor: site-specific and functional linkage to the vacuolar H+-ATPase in the kidney. Hypertension 2009; 54:261-9. [PMID: 19546380 DOI: 10.1161/hypertensionaha.109.128645] [Citation(s) in RCA: 198] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
The (pro)renin receptor ([P]RR) is a transmembrane protein that binds both renin and prorenin with high affinity, increasing the catalytic cleavage of angiotensinogen and signaling intracellularly through mitogen-activated protein kinase activation. Although initially reported as having no homology with any known membrane protein, other studies have suggested that the (P)RR is an accessory protein, named ATP6ap2, that associates with the vacuolar H(+)-ATPase, a key mediator of final urinary acidification. Using in situ hybridization, immunohistochemistry, and electron microscopy, together with serial sections stained with nephron segment-specific markers, we found that (P)RR mRNA and protein were predominantly expressed in collecting ducts and in the distal nephron. Within collecting ducts, the (P)RR was most abundant in microvilli at the apical surface of A-type intercalated cells. Dual-staining immunofluorescence demonstrated colocalization of the (P)RR with the B1/2 subunit of the vacuolar H(+)-ATPase, the ion exchanger that secretes H(+) ions into the urinary space and that associates with an accessory subunit homologous to the (P)RR. In collecting duct/distal tubule lineage Madin-Darby canine kidney cells, extracellular signal-regulated kinase 1/2 phosphorylation, induced by either renin or prorenin, was attenuated by the selective vacuolar H(+)-ATPase inhibitor bafilomycin. The predominant expression of the (P)RR at the apex of acid-secreting cells in the collecting duct, along with its colocalization and homology with an accessory protein of the vacuolar H(+)-ATPase, suggests that the (P)RR may function primarily in distal nephron H(+) transport, recently noted to be, at least in part, an angiotensin II-dependent phenomenon.
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Affiliation(s)
- Andrew Advani
- Keenan Research Centre of the Li Ka Shing Knowledge Institute, St Michael's Hospital, 61 Queen St East, Toronto, Ontario, Canada M5C 2T2
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Hao J, Ramachandran A, George A. Temporal and spatial localization of the dentin matrix proteins during dentin biomineralization. J Histochem Cytochem 2008; 57:227-37. [PMID: 19001636 DOI: 10.1369/jhc.2008.952119] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Formation of bone and dentin are classical examples of matrix-mediated mineralization. The mineral phase is essentially the same in these two tissues and primarily consists of a carbonated hydroxyapatite, but the difference lies in the crystal size and shape. There are three components that are necessary for proper mineralization, namely the proper synthesis and secretion of the non-collagenous proteins (NCPs), self-assembly of the collagenous matrix, and delivery of calcium and phosphate ions to the extracellular matrix. Three major NCPs present in the dentin matrix are dentin matrix protein 1 (DMP1), dentin phosphophorin (DPP), and dentin sialoprotein (DSP). In this study, we show the temporal and spatial localization of these NCPs and correlate their expression with the presence of collagenous matrix and calcified deposits in developing mouse incisors and molars. DMP1, an acidic protein, is present predominantly at the mineralization front and in the nucleus of undifferentiated preodontoblast cells. DPP, the major NCP, is present in large amounts at the mineralization front and might function to regulate the size of the growing hydroxyapatite crystals. For the first time, we report the localization of DPP in the nucleus of preodontoblast cells, suggesting a signaling function during the odontoblast differentiation process. DSP is localized predominantly in the dentinal tubules at the site of peritubular dentin, which is highly mineralized in nature. Thus, the precise localization of DMP1, DPP, and DSP in the dentin tissue suggests that a concerted effort between several NCPs is necessary for dentin formation.
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Affiliation(s)
- Jianjun Hao
- Brodie Tooth Development Genetics and Regenerative Medicine Research Laboratory, Department of Oral Biology, University of Illinois at Chicago, Chicago, IL 60612, USA
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George A, Veis A. Phosphorylated proteins and control over apatite nucleation, crystal growth, and inhibition. Chem Rev 2008; 108:4670-93. [PMID: 18831570 PMCID: PMC2748976 DOI: 10.1021/cr0782729] [Citation(s) in RCA: 481] [Impact Index Per Article: 30.1] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Anne George
- Department of Oral Biology, Brodie Tooth Development Genetics and Regenerative Medicine Research Laboratory, University of Illinois at Chicago, Chicago, Illinois 60612, USA.
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