2023
Aspergillus niger as a cell factory for the production of pyomelanin, a molecule with UV-C radiation shielding activity
MARIE, Koch Stella, Carsten FREIDANK-POHL, Siontas OLIVER, Cortesao MARTA, Mota AFONSO et. al.Základní údaje
Originální název
Aspergillus niger as a cell factory for the production of pyomelanin, a molecule with UV-C radiation shielding activity
Autoři
MARIE, Koch Stella, Carsten FREIDANK-POHL, Siontas OLIVER, Cortesao MARTA, Mota AFONSO, Runzheimer KATHARINA, Jung SASCHA, Katarína REBROŠOVÁ (703 Slovensko, domácí), Martin SILER, Moeller RALF a Meyer VERA
Vydání
FRONTIERS IN MICROBIOLOGY, LAUSANNE, FRONTIERS MEDIA SA, 2023, 1664-302X
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10606 Microbiology
Stát vydavatele
Švýcarsko
Utajení
není předmětem státního či obchodního tajemství
Odkazy
Impakt faktor
Impact factor: 5.200 v roce 2022
Kód RIV
RIV/00216224:14110/23:00131292
Organizační jednotka
Lékařská fakulta
UT WoS
001041737100001
Klíčová slova anglicky
Aspergillus niger; melanin; pyomelanin; radioprotection; cosmic radiation; space exploration
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 26. 1. 2024 08:10, Mgr. Tereza Miškechová
Anotace
V originále
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 (PyoFun) in A. niger by inducing overproduction of the pigment using L-tyrosine in a recombinant ΔhmgA mutant strain (OS4.3). The PyoFun pigment was characterized using three spectroscopic methods, and its antioxidant properties were assessed using a DPPH-assay. Additionally, we evaluated the protective effect of PyoFun against non-ionizing radiation (monochromatic UV-C) and compared its efficacy to a synthetically produced control pyomelanin (PyoSyn). The results confirmed successful production of PyoFun in A. niger through inducible overproduction. Characterization using spectroscopic methods confirmed the presence of PyoFun, and the DPPH-assay demonstrated its strong antioxidant properties. Moreover, PyoFun exhibited a highly protective effect against radiation-induced stress, surpassing the protection provided by PyoSyn. The findings of this study suggest that PyoFun has significant potential as a biological shield against harmful radiation. Notably, PyoFun 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 PyoFun 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.
Návaznosti
MUNI/A/1361/2022, interní kód MU |
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NU21-05-00341, projekt VaV |
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