TRIP-1 in the extracellular matrix promotes nucleation of calcium phosphate polymorphs
In search for bone and dentin extracellular matrix (ECM) proteins, transforming growth factor beta receptor II interacting protein 1 (TRIP-1) was identified as a novel protein synthesized by osteoblasts and odontoblasts and exported to the ECM. TRIP-1 is a WD-40 (WD is Tryptophan-Aspartic acid dipeptide) protein that has been well recognized for its physiological role in the endoplasmic reticulum (ER). In the ER, TRIP-1 functions as an essential subunit of eukaryotic elongation initiation factor 3 and is involved in the protein translational machinery. Recently, we reported that TRIP-1 is localized in the ECM of bone and dentin. In this study, we demonstrate that varying concentrations of TRIP-1 can participate in the nucleation of calcium phosphate polymorphs. Nucleation studies performed with high calcium and phosphate concentration demonstrated that recombinant TRIP-1 could orchestrate the formation of hydroxyapatite crystals. Nucleation experiments performed on demineralized and deproteinized dentin wafer under physiological conditions and subsequent transmission electron microscope analysis of the deposits at the end of 7 and 14 days showed that TRIP-1 promoted the deposition of calcium phosphate mineral aggregates in the gap-overlap region of type I collagen. Taken together, we provide mechanistic insight into the role of this intracellular protein in matrix mineralization.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2018 |
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| Erschienen: |
2018 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:59 |
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| Enthalten in: |
Connective tissue research - 59(2018), sup1 vom: 01. Dez., Seite 13-19 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Ramachandran, Amsaveni [VerfasserIn] |
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| Links: |
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| Anmerkungen: |
Date Completed 20.06.2019 Date Revised 20.06.2019 published: Print Citation Status MEDLINE |
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| doi: |
10.1080/03008207.2018.1424146 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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NLM283926708 |
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| 520 | |a In search for bone and dentin extracellular matrix (ECM) proteins, transforming growth factor beta receptor II interacting protein 1 (TRIP-1) was identified as a novel protein synthesized by osteoblasts and odontoblasts and exported to the ECM. TRIP-1 is a WD-40 (WD is Tryptophan-Aspartic acid dipeptide) protein that has been well recognized for its physiological role in the endoplasmic reticulum (ER). In the ER, TRIP-1 functions as an essential subunit of eukaryotic elongation initiation factor 3 and is involved in the protein translational machinery. Recently, we reported that TRIP-1 is localized in the ECM of bone and dentin. In this study, we demonstrate that varying concentrations of TRIP-1 can participate in the nucleation of calcium phosphate polymorphs. Nucleation studies performed with high calcium and phosphate concentration demonstrated that recombinant TRIP-1 could orchestrate the formation of hydroxyapatite crystals. Nucleation experiments performed on demineralized and deproteinized dentin wafer under physiological conditions and subsequent transmission electron microscope analysis of the deposits at the end of 7 and 14 days showed that TRIP-1 promoted the deposition of calcium phosphate mineral aggregates in the gap-overlap region of type I collagen. Taken together, we provide mechanistic insight into the role of this intracellular protein in matrix mineralization | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a Research Support, N.I.H., Extramural | |
| 650 | 4 | |a Research Support, Non-U.S. Gov't | |
| 650 | 4 | |a Biomineralization | |
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| 700 | 1 | |a Shokuhfar, Tolou |e verfasserin |4 aut | |
| 700 | 1 | |a George, Anne |e verfasserin |4 aut | |
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