负载光敏剂D-甘露糖修饰胶束的制备及其在靶向光动力治疗中的应用
D-Mannose-Conjugated Micelles Loaded with Photosensitizers for Targeted Photodynamic Therapy
DOI:10.3969/j.issn.1673-1689.2019.10.007
中文关键词: D-甘露糖 主客体识别 载光敏剂胶束 受体介导胞吞 靶向光动力治疗
英文关键词: D-mannose,host-guest recognition,BTA-loaded micelles,receptor-mediated endocytosis,targeted photodynamic therapy
基金项目:
作者
单位
蔡颖
江南大学 糖化学与生物技术教育部重点实验室,江苏 无锡 214122
江南大学 生物工程学院,江苏 无锡 214122
王胜涛
魏朋
张权
尹健
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中文摘要:
本研究合成了D-甘露糖修饰的两亲性β-环糊精(C3-CD-Man7)和三臂金刚烷共价键连的BODIPY光敏剂(BTA),并利用β-环糊精(β-CD)与金刚烷(Ad)之间超分子主客体识别作用制备表面D-甘露糖修饰的高负载光敏剂胶束(BTA@C3-CD-Man7)。利用透射电镜和动态光散射对BTA@C3-CD-Man7胶束形貌、粒径和稳定性进行表征;并采用MTT细胞毒性评价方法考察其对人乳腺癌MDA-MB-231细胞的摄入、光动力治疗效果和光毒性。结果表明BTA@C3-CD-Man7粒径均一,在溶液中稳定性良好;甘露糖受体过度表达的乳腺癌细胞MDA-MB-231能够特异性识别并大量摄取BTA@C3-CD-Man7,并在665 nm LED灯照射下表现出对MDA-MB-231细胞靶向光动力治疗的效果。
英文摘要:
In this paper,the D-mannose-modified amphiphilic β-cyclodextrin(C3-CD-Man7) and a three-arm adamantine-conjugated BODIPY photosensitizer(BTA) are synthesized. Because of the presence of supramolecular host-guest interactions between β-cyclodextrin and adamantane,BTA is loaded into the hydrophobic cavity of micelles self-assembled from C3-CD-Man7,leading to the formation of BTA-loaded micelles(BTA@C3-CD-Man7). The size,morphology,and stability of BTA@C3-CD-Man7are characterized by transmission electron microscopy and dynamic light scattering. The cellular uptake,PDT effect,and phototoxicity of BTA@C3-CD-Man7are investigated using the MTT assay. The results show that BTA@C3-CD-Man7has uniform size distribution and excellent stability in aqueous solution. More importantly,BTA@C3-CD-Man7could be specifically internalized by MDA-MB-231 breast cancer cells that overexpress mannose receptors on cell surfaces. Thus,with 665 nm LED irradiation,the enhanced phototoxicity of BTA@C3-CD-Man7 showed their potential for targeted photodynamic therapy applications.
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