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Aspergillus niger as a cell factory for the production of pyomelanin, a molecule with UV-C radiation shielding activity
Melanins are complex pigments with various biological functions and potential applications in space exploration and biomedicine due to their radioprotective properties. Aspergillus niger, a fungus known for its high radiation resistance, is widely used in biotechnology and a candidate for melanin pr...
Autores principales: | , , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Frontiers Media S.A.
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10399693/ https://www.ncbi.nlm.nih.gov/pubmed/37547691 http://dx.doi.org/10.3389/fmicb.2023.1233740 |
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author | Koch, Stella Marie Freidank-Pohl, Carsten Siontas, Oliver Cortesao, Marta Mota, Afonso Runzheimer, Katharina Jung, Sascha Rebrosova, Katarina Siler, Martin Moeller, Ralf Meyer, Vera |
author_facet | Koch, Stella Marie Freidank-Pohl, Carsten Siontas, Oliver Cortesao, Marta Mota, Afonso Runzheimer, Katharina Jung, Sascha Rebrosova, Katarina Siler, Martin Moeller, Ralf Meyer, Vera |
author_sort | Koch, Stella Marie |
collection | PubMed |
description | Melanins are complex pigments with various biological functions and potential applications in space exploration and biomedicine due to their radioprotective properties. Aspergillus niger, a fungus known for its high radiation resistance, is widely used in biotechnology and a candidate for melanin production. In this study, we investigated the production of fungal pyomelanin (Pyo(Fun)) in A. niger by inducing overproduction of the pigment using L-tyrosine in a recombinant ΔhmgA mutant strain (OS4.3). The Pyo(Fun) pigment was characterized using three spectroscopic methods, and its antioxidant properties were assessed using a DPPH-assay. Additionally, we evaluated the protective effect of Pyo(Fun) against non-ionizing radiation (monochromatic UV-C) and compared its efficacy to a synthetically produced control pyomelanin (Pyo(Syn)). The results confirmed successful production of Pyo(Fun) in A. niger through inducible overproduction. Characterization using spectroscopic methods confirmed the presence of Pyo(Fun), and the DPPH-assay demonstrated its strong antioxidant properties. Moreover, Pyo(Fun) exhibited a highly protective effect against radiation-induced stress, surpassing the protection provided by Pyo(Syn). The findings of this study suggest that Pyo(Fun) has significant potential as a biological shield against harmful radiation. Notably, Pyo(Fun) is synthesized extracellularly, differing it from other fungal melanins (such as L-DOPA- or DHN-melanin) that require cell lysis for pigment purification. This characteristic makes Pyo(Fun) a valuable resource for biotechnology, biomedicine, and the space industry. However, further research is needed to evaluate its protective effect in a dried form and against ionizing radiation. |
format | Online Article Text |
id | pubmed-10399693 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | Frontiers Media S.A. |
record_format | MEDLINE/PubMed |
spelling | pubmed-103996932023-08-04 Aspergillus niger as a cell factory for the production of pyomelanin, a molecule with UV-C radiation shielding activity Koch, Stella Marie Freidank-Pohl, Carsten Siontas, Oliver Cortesao, Marta Mota, Afonso Runzheimer, Katharina Jung, Sascha Rebrosova, Katarina Siler, Martin Moeller, Ralf Meyer, Vera Front Microbiol Microbiology Melanins are complex pigments with various biological functions and potential applications in space exploration and biomedicine due to their radioprotective properties. Aspergillus niger, a fungus known for its high radiation resistance, is widely used in biotechnology and a candidate for melanin production. In this study, we investigated the production of fungal pyomelanin (Pyo(Fun)) in A. niger by inducing overproduction of the pigment using L-tyrosine in a recombinant ΔhmgA mutant strain (OS4.3). The Pyo(Fun) pigment was characterized using three spectroscopic methods, and its antioxidant properties were assessed using a DPPH-assay. Additionally, we evaluated the protective effect of Pyo(Fun) against non-ionizing radiation (monochromatic UV-C) and compared its efficacy to a synthetically produced control pyomelanin (Pyo(Syn)). The results confirmed successful production of Pyo(Fun) in A. niger through inducible overproduction. Characterization using spectroscopic methods confirmed the presence of Pyo(Fun), and the DPPH-assay demonstrated its strong antioxidant properties. Moreover, Pyo(Fun) exhibited a highly protective effect against radiation-induced stress, surpassing the protection provided by Pyo(Syn). The findings of this study suggest that Pyo(Fun) has significant potential as a biological shield against harmful radiation. Notably, Pyo(Fun) is synthesized extracellularly, differing it from other fungal melanins (such as L-DOPA- or DHN-melanin) that require cell lysis for pigment purification. This characteristic makes Pyo(Fun) a valuable resource for biotechnology, biomedicine, and the space industry. However, further research is needed to evaluate its protective effect in a dried form and against ionizing radiation. Frontiers Media S.A. 2023-07-20 /pmc/articles/PMC10399693/ /pubmed/37547691 http://dx.doi.org/10.3389/fmicb.2023.1233740 Text en Copyright © 2023 Koch, Freidank-Pohl, Siontas, Cortesao, Mota, Runzheimer, Jung, Rebrosova, Siler, Moeller and Meyer. https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms. |
spellingShingle | Microbiology Koch, Stella Marie Freidank-Pohl, Carsten Siontas, Oliver Cortesao, Marta Mota, Afonso Runzheimer, Katharina Jung, Sascha Rebrosova, Katarina Siler, Martin Moeller, Ralf Meyer, Vera Aspergillus niger as a cell factory for the production of pyomelanin, a molecule with UV-C radiation shielding activity |
title | Aspergillus niger as a cell factory for the production of pyomelanin, a molecule with UV-C radiation shielding activity |
title_full | Aspergillus niger as a cell factory for the production of pyomelanin, a molecule with UV-C radiation shielding activity |
title_fullStr | Aspergillus niger as a cell factory for the production of pyomelanin, a molecule with UV-C radiation shielding activity |
title_full_unstemmed | Aspergillus niger as a cell factory for the production of pyomelanin, a molecule with UV-C radiation shielding activity |
title_short | Aspergillus niger as a cell factory for the production of pyomelanin, a molecule with UV-C radiation shielding activity |
title_sort | aspergillus niger as a cell factory for the production of pyomelanin, a molecule with uv-c radiation shielding activity |
topic | Microbiology |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10399693/ https://www.ncbi.nlm.nih.gov/pubmed/37547691 http://dx.doi.org/10.3389/fmicb.2023.1233740 |
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