Abstract
The microbial biotransformation is a robust procedure in developing steroids and fungi are practical tools in this process; therefore, the fungal modification of testosterone by Penicillium pinophilum was investigated. The three prominent metabolites, including 14α-hydroxyandrost-4-en-3,17-dione (II), 14α-hydroxytestosterone (III), and 11α-hydroxytestosterone (IV), were isolated and characterized by chromatographic and spectroscopic methods. The time course profile showed that the content of the metabolites II and III began to decrease after 96 and 24 h, respectively. In comparison, the content of the metabolite IV remained stable after 24 h. In silico studies showed that the probability of binding to the androgen receptor remains high for all three metabolites. However, the probability of binding to the estrogen receptors α and β increased for metabolite IV but decreased for metabolite III. Penicillium pinophilum as a potentially viable biocatalyst could hydroxylate C-11α and C-14α positions and oxidize the C-17β hydroxyl group to 17-ketone in testosterone molecule.
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Data availability
The datasets used and/or analyzed during the present study are available from corresponding author on reasonable request.
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Acknowledgements
The authors acknowledge to Shahid Beheshti University of Medical Sciences for supporting this study as a part of Maryam Mehmannavaz’s PhD thesis that has been carried out at School of Pharmacy, Shahid Beheshti University of Medical Sciences.
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This study was supported by the Shahid Beheshti University of Medical Sciences, Tehran, Iran.
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MM performed the experiments, data acquisition and analysis, and wrote the first draft of the manuscript. BN designed the study, analyzed the data and edited the manuscript. All authors approved the final version of the manuscript.
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Mehmannavaz, M., Nickavar, B. Biotransformation of testosterone by the filamentous fungus Penicillium pinophilum. Arch Microbiol 204, 570 (2022). https://doi.org/10.1007/s00203-022-03191-3
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DOI: https://doi.org/10.1007/s00203-022-03191-3