ArticleMolecular biotechnology2017
Cloning and Expression Analysis of Human Amelogenin in Nicotiana benthamiana Plants by Means of a Transient Expression System.
Article in Molecular biotechnology, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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2 citing papers in PubMed, 3 citations in OpenAlex.
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Authors and funding
7 authors at 3 institutions in 1 country.
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Abstract
Enamel is the covering tissue of teeth, made of regularly arranged hydroxyapatite crystals deposited on an organic matrix composed of 90% amelogenin that is completely degraded at the end of the enamel formation process. Amelogenin has a biomineralizing activity, forming nanoparticles or nanoribbons that guide hydroxyapatite deposit, and regenerative functions in bone and vascular tissue and in wound healing. Biotechnological products containing amelogenin seem to facilitate these processes. Here, we describe the production of human amelogenin in plants by transient transformation of Nicotiana benthamiana with constructs carrying synthetic genes with optimized human or plant codons. Both genes yielded approximately 500 µg of total amelogenin per gram of fresh leaf tissue. Two purification procedures based on affinity chromatography or on intrinsic solubility properties of the protein were followed, yielding from 12 to 150 µg of amelogenin per gram of fresh leaf tissue, respectively, at different purity. The identity of the plant-made human amelogenin was confirmed by MALDI-TOF-MS analysis of peptides generated following chymotrypsin digestion. Using dynamic light scattering, we showed that plant extracts made in acetic acid containing human amelogenin have a bimodal distribution of agglomerates, with hydrodynamic diameters of 22.8 ± 3.8 and 389.5 ± 86.6 nm. To the best of our knowledge, this is the first report of expression of human amelogenin in plants, offering the possibility to use this plant-made protein for nanotechnological applications.
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