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Biotechnological production and potential applications of hypocrellins

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Abstract

Hypocrellins (HYPs), a kind of natural perylenequinones (PQs) with an oxidized pentacyclic core, are important natural compounds initially extracted from the stromata of Hypocrella bambusae and Shiraia bambusicola. They have been widely concerned for their use as anti-microbial, anti-cancers, and anti-viral photodynamic therapy agents in recent years. Considering the restrictions of natural stromal resources, submerged fermentation with Shiraia spp. has been viewed as a promising alternative biotechnology for HYP production, and great efforts have been made to improve HYP production over the past decade. This article reviews recent publications about the mycelium fermentation production of HYPs, and their bioactivities and potential applications, and especially summarizes the progresses toward manipulation of fermentation conditions. Also, their chemical structure and analytic methods are outlined. Herein, it is worth mentioning that the gene arrangement in HYP gene cluster is revised; previous unknown genes in HYP and CTB gene clusters with correct function annotation are deciphered; the homologous sequences of HYP, CTB, and elc are systematically aligned, and especially the biosynthetic pathway of HYPs is full-scale proposed.

Key points

• The mycelial fermentation process and metabolic regulation of hypocrellins are reviewed.

• The bioactivities and potential applications of hypocrellins are summarized.

• The biosynthesis pathway and regulatory mechanisms of hypocrellins are outlined.

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All data generated or analyzed during this study are included in this published article (and its supplementary information files).

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Funding

This work was supported by the National Natural Science Foundation of China (Grant Nos. 32260016 and 31460021) and the Natural Science Foundation of Jiangxi Province of China (Grant No. 20181BAB214003).

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Contributions

DZ and YX designed the structure of this review. ZB and CX wrote the manuscript. DZ and ZZ revised the manuscript. All the authors read and approved the final manuscript.

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Correspondence to Du Zhu.

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No human participants or animals were used in this study.

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The authors declare no competing interests.

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Bao, Z., Xie, Y., Xu, C. et al. Biotechnological production and potential applications of hypocrellins. Appl Microbiol Biotechnol 107, 6421–6438 (2023). https://doi.org/10.1007/s00253-023-12727-6

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  • DOI: https://doi.org/10.1007/s00253-023-12727-6

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