Sguizzato Maddalena, Ferrara Francesca, Hallan Supandeep Singh, Baldisserotto Anna, Drechsler Markus, Malatesta Manuela, Costanzo Manuela, Cortesi Rita, Puglia Carmelo, Valacchi Giuseppe, Esposito Elisabetta
Department of Chemical, Pharmaceutical and Agricultural Sciences, University of Ferrara, I-44121 Ferrara, Italy.
Department of Neurosciences and Rehabilitation, University of Ferrara, I-44121 Ferrara, Italy.
Antioxidants (Basel). 2021 May 12;10(5):768. doi: 10.3390/antiox10050768.
Mangiferin is a natural glucosyl xanthone with antioxidant and anti-inflammatory activity, making it suitable for protection against cutaneous diseases. In this study ethosomes and transethosomes were designed as topical delivery systems for mangiferin. A preformulation study was conducted using different surfactants in association with phosphatidylcholine. Vesicle dimensional distribution was monitored by photon correlation spectroscopy, while antioxidant capacity and cytotoxicity were respectively assessed by free radical scavenging analysis and MTT on HaCaT keratinocytes. Selected nanosystems were further investigated by cryogenic transmission electron microscopy, while mangiferin entrapment capacity was evaluated by ultracentrifugation and HPLC. The diffusion kinetics of mangiferin from ethosomes and transethosomes evaluated by Franz cell was faster in the case of transethosomes. The suitability of mangiferin-containing nanovesicles in the treatment of skin disorders related to pollutants was investigated, evaluating, in vitro, the antioxidant and anti-inflammatory effect of ethosomes and transethosomes on human keratinocytes exposed to cigarette smoke as an oxidative and inflammatory challenger. The ability to induce an antioxidant response (HO-1) and anti-inflammatory status (IL-6 and NF-kB) was determined by RT-PCR and immunofluorescence. The data demonstrated the effectiveness of mangiferin loaded in nanosystems to protect cells from damage. Finally, to gain insight into the keratinocytes' uptake of ethosome and transethosome, transmission electron microscopy analyses were conducted, showing that both nanosystems were able to pass intact within the cells.
芒果苷是一种具有抗氧化和抗炎活性的天然葡糖基呫吨酮,使其适用于预防皮肤疾病。在本研究中,乙醇脂质体和转乙醇脂质体被设计为芒果苷的局部递送系统。使用不同的表面活性剂与磷脂酰胆碱联合进行了处方前研究。通过光子相关光谱法监测囊泡尺寸分布,而抗氧化能力和细胞毒性分别通过自由基清除分析和对HaCaT角质形成细胞的MTT法进行评估。通过低温透射电子显微镜对选定的纳米系统进行进一步研究,同时通过超速离心和高效液相色谱法评估芒果苷的包封率。通过Franz扩散池评估,转乙醇脂质体中芒果苷的扩散动力学更快。研究了含芒果苷纳米囊泡在治疗与污染物相关的皮肤疾病中的适用性,在体外评估了乙醇脂质体和转乙醇脂质体对暴露于香烟烟雾(作为氧化和炎症挑战物)的人角质形成细胞的抗氧化和抗炎作用。通过逆转录聚合酶链反应和免疫荧光法测定诱导抗氧化反应(HO-1)和抗炎状态(IL-6和NF-κB)的能力。数据证明了纳米系统中负载的芒果苷保护细胞免受损伤的有效性。最后,为了深入了解角质形成细胞对乙醇脂质体和转乙醇脂质体的摄取情况,进行了透射电子显微镜分析,结果表明这两种纳米系统都能够完整地进入细胞内。