A nanophytosomes formulation based on elderberry anthocyanins and Codium lipids to mitigate mitochondrial dysfunctions - 09/10/21
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Abstract |
The development of nanomedicines to modulate the mitochondrial function is a great scientific challenge since mitochondrial dysfunction is a pathological hallmark of many chronic diseases, including degenerative brain pathologies like Parkinson's and Alzheimer’s diseases. To address this challenge, the mitochondriotropic features of the elderberry anthocyanin-enriched extract (Sambucus nigra) were combined with the self-assembling properties of the membrane polar lipids from Codium tomentosum in an innovative SC-Nanophytosomes formulation. Membrane polar lipids, obtained by a new procedure as chlorophyll-free extract, are characterized by 26% of non-phosphorus polar lipids and 74% of phospholipids (dominated by anionic lipids) containing a high degree of polyunsaturated fatty acids. The anthocyanin-enriched extract is dominated by a mixture of four cyanidin-glycosides, representing about 86% of their phenolic content. SC-Nanophytosomes engineered with 600 µM algae membrane polar lipids and 0.5 mg/L of the anthocyanin-enriched extract are nanosized vesicles (diameter =108.74 ± 24.74 nm) with a negative surface charge (Zeta potential = −46.93 ± 6.63 mV) that exhibit stability during storage at 4 ºC. In vitro assays with SH-SY5Y cells showed that SC-Nanophytosomes have the competence to target mitochondria, improving the mitochondrial respiratory chain complexes I and II and preserving the mitochondrial membrane potential in the presence of rotenone. Additionally, SC-Nanophytosomes protect SH-SY5Y cells against the toxicity induced by rotenone or glutamate. Green-fluorescent labeled SC-Nanophytosomes were used to reveal that they are mainly internalized by cells via caveola-mediated endocytosis, escape from endosome and reach the cytoplasm organelles, including mitochondria. Overall, data indicate that SC-Nanophytosomes have the potential to support a mitochondria-targeted therapy for neurodegenerative diseases.
Le texte complet de cet article est disponible en PDF.Graphical Abstract |
Highlights |
• | SC-Nanophytosomes are assembled with Codium polar lipids and elderberry anthocyanins. |
• | They exhibit negative surface charge and mitochondriotropic features. |
• | SC-Nanophytosomes are targeted for mitochondria via caveola-mediated endocytosis. |
• | SC-Nanophytosomes overcome mitochondrial complex I-related dysfunctions. |
• | They protect cells from the toxicity induced by glutamate or rotenone. |
Keywords : Anthocyanins, Algae membrane lipids, Lipid-based nanocarrier, Mitochondria-targeted therapy, Nanomedicine
Plan
Vol 143
Article 112157- novembre 2021 Retour au numéroBienvenue sur EM-consulte, la référence des professionnels de santé.
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