ArticleMicrobial cell factories2024
Production and bioprocessing of epothilone B from Aspergillus niger, an endophyte of Latania loddegesii, with a conceivable biosynthetic stability: anticancer, anti-wound healing activities and cell cycle analysis.
Article in Microbial cell factories, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It has been retracted, and should not be counted. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed.
- Endophytic Aspergillus glaucus as a novel epothilone B producer: Antiproliferative activity and in silico analysis.Applied microbiology and biotechnology · 2026Article
- Characterization of Alternaria alternata alternariol monomethyl ether with a potential antiproliferative activity by topoisomerases inhibition; molecular docking and dynamic simulations.Scientific reports · 2026Article
- Article
- Cladosporium cladosporioides, endophyte of Strelitzia nicolai, as a new producer of Alternariol monomethyl ether with a potential cytotoxic activity.Scientific reports · 2026Article
- Amesia nigricolor, a novel endophyte of Encephalartos bubalinus, exhibiting a robust taxol biosynthetic stability: chemical characterization and biological activities.Microbial cell factories · 2025Article
- Natural Anticancer Drugs: Efficacy, Safety, and Future Challenges.Current medicinal chemistry · 2025Review
Corrections and comments
- Retracted
Authors and funding
6 authors.
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No grant is acknowledged in the PubMed record.
Abstract
Epothilones are one of the common prescribed anticancer drugs for solid tumors, for their exceptional binding affinity with β-tubulin microtubule, stabilizing their disassembly, causing an ultimate arrest to the cellular growth. Epothilones were initially isolated from Sornagium cellulosum, however, their extremely slow growth rate and low yield of epothilone is the challenge. So, screening for a novel fungal endophyte dwelling medicinal plants, with higher epothilone productivity and feasibility of growth manipulation was the objective. Aspergillus niger EFBL-SR OR342867, an endophyte of Latania loddegesii, has been recognized as the heady epothilone producer (140.2 μg/L). The chemical structural identity of the TLC-purified putative sample of A. niger was resolved from the HPLC, FTIR and LC-ESI-MS/MS analyses, with an identical molecular structure of the authentic epothilone B. The purified A. niger epothilone B showed a resilient activity against MCF-7 (0.022 μM), HepG-2 (0.037 μM), and HCT-116 (0.12 μM), with selectivity indices 21.8, 12.9 and 4, respectively. The purified epothilone B exhibited a potential anti-wound healing activity to HepG-2 and MCF-7 cells by ~ 54.07 and 60.0%, respectively, after 24 h, compared to the untreated cells. The purified epothilone has a significant antiproliferative effect by arresting the cellular growth of MCF-7 at G2/M phase by ~ 2.1 folds, inducing the total apoptosis by ~ 12.2 folds, normalized to the control cells. The epothilone B productivity by A. niger was optimized by the response surface methodology, with ~ 1.4 fold increments (266.9 μg/L), over the control. The epothilone productivity by A. niger was reduced by ~ 2.4 folds by 6 months storage as a slope culture at 4 °C, however, the epothilone productivity was slightly restored with ethylacetate extracts of L. loddegesii, confirming the plant-derived chemical signals that partially triggers the biosynthetic genes of A. niger epothilones. So, this is the first report emphasizing the metabolic potency of A. niger, an endophyte of L. loddegesii, to produce epothilone B, that could be a new platform for industrial production of this drug.
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