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Development of Mitotane Lipid Nanocarriers and Enantiomers: Two-in-One Solution to Efficiently Treat Adreno-Cortical Carcinoma

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Adrenocortical carcinoma (ACC) is a rare but aggressive malignancy with a poor prognosis. Treatment options for advanced ACC are limited. Indeed, radical tumor resection can lead to local or metastatic recurrence, and mitotane (Lysodren®), the only recognized adrenolytic drug, offers modest response rates, notably due to some of its physico-chemical and pharmacological properties (i.e. hydrophobicity, low bioavailability). Meantime, high cumulative doses of Lysodren® usually cause systemic toxicities. To reduce adverse health effects, the search of safe and efficient mitotane nano-formulations as well as the full characterization and testing of its enantiomers can represent valuable therapeutic options. Interestingly, recent investigations showed that solid lipid nanoparticles (SLN) and nanostructured lipid carriers (NLC) could considerably improve the efficacy of mitotane (i.e. enhanced solubility and bioavailability, progressive release of the loaded drug into blood and targeted tissues) as well as its safety (i.e. lower toxicity, higher biocompatibility). These two nano-carriers for mitotane delivery and targeting are of particular interest over other polymeric particles (i.e. low-cost, efficient and simple scaling to an industrial production level following green methods). Besides, emerging studies suggested that the S-(-)- mitotane is more potent than the R-(+)-mitotane for ACC treatment. Therefore, the production of pure and active S-(-)-mitotane might offer synergic or additive benefits for ACC patients when combined to solid lipid-based nanocarriers. In this review, we first provide an updated overview of the ACC disease before emphasizing on the promising mitotane drug nano-systems, as well as on the separation, purification and production of single mitotane enantiomer using state-of-art chromatographic-based methods.
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Keywords: Adreno-cortical carcinoma; cancer endocrinology; chiral separation; endocrine cancer chemotherapy; lysodren®; medicinal chemistry; mitotane enantiomers; mitotane pharmacology; mitotane synthesis; nanomedicine; nanostructured lipid carriers; simulated moving bed chromatography; solid lipid nanoparticles; supercritical fluid chromatography; translational medicine

Document Type: Research Article

Publication date: 2012-12-01

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  • Current Medicinal Chemistry covers all the latest and outstanding developments in medicinal chemistry and rational drug design. Each issue contains a series of timely in-depth reviews written by leaders in the field covering a range of the current topics in medicinal chemistry. Current Medicinal Chemistry is an essential journal for every medicinal chemist who wishes to be kept informed and up-to-date with the latest and most important developments.
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