DSPE-PEG2000-MTX 在合成脂质体MTX@DTX-Rh2-Lips 的应用
瑞禧生物2025-08-29   作者:ws   来源:
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文献:Methotrexate-modified docetaxel liposome targeting with ginsenoside Rh2 as a membrane stabilizer for the treatment of ovarian cancer

文献链接:https://www.sciencedirect.com/science/article/abs/pii/S1773224724005860

作者:Mo Liu , Shu-tong Li , Jia-hua Wang , Mu-han Chen , Zi-xu Zhang , Yang Liu , Liang Kong , Xue-tao Li , Ling Tang

相关产品:DSPE-PEG2000-MTX(磷脂-聚乙二醇2000-甲氨蝶呤)

原文摘要:

At present, nano-agent-targeted therapy has become the main means of clinical treatment for ovarian cancer. Conventional liposomes, while commonly used as drug carriers, often suffer from stability issues that reduce drug bioavailability. Cholesterol, a frequent component in liposome membranes, may cause adverse effects such as dyspnea and shortness of breath when accumulated excessively. To address these challenges, we employed G-Rh2 as an alternative to cholesterol in liposome membranes as it acts as a membrane stabilizer to increase the stability of the liposome system. We prepared methotrexate-modified docetaxel liposomes (MTX@DTX-Rh2-Lips), characterized their properties and evaluated their stability. The ability of MTX@DTX-Rh2-Lips to target SKOV3 cells and loaded mice was confirmed. Assessments through CCK-8, EDU proliferation, and wound healing assay demonstrated the in vitro antitumor effects of MTX@DTX-Rh2-Lips. The in vivo antitumor effects of MTX@DTX-Rh2-Lips were evaluated by immunohistochemistry and immunofluorescence staining. Our findings revealed that MTX@DTX-Rh2-Lips was uniformly spherical and stable, effectively targeting the tumor site, inhibiting the proliferation, invasion, metastasis, and angiogenesis of SKOV3 cells, and affecting the expression of tumor-associated proteins, with a good safety profile. In conclusion, the successful establishment of MTX@DTX-Rh2-Lips introduces promising avenues for the clinical treatment of ovarian cancer.

 

DSPE-PEG 2000 -MTX:一种多功能的化合物。DSPE:1,2 -二硬脂酰- sn -甘油- 3 - 磷酸乙醇胺,一种磷脂。磷脂具有两性分子结构,有亲水性的头部(磷酸乙醇胺部分)和疏水性的两条脂肪酸(硬脂酸)尾部,这种结构使其能够在水溶液中自组装形成脂质双层结构,这是生物膜的基本结构单元。PEG2000 代表聚乙二醇(Polyethylene glycol),其分子量约为 2000Da。聚乙二醇具有良好的水溶性、生物相容性和柔性链结构。它在这个化合物中起到增加分子亲水性、减少蛋白质吸附、延长循环时间的作用。在体内环境中,PEG 链可以防止复合物被免疫系统快速识别和清除,增加其的滞留时间。MTX 是甲氨蝶呤(Methotrexate)的缩写,它是一种叶酸拮抗剂,是一种常用的抗cancer化合物和免疫抑制剂。甲氨蝶呤主要通过抑制二氢叶酸还原酶,干扰细胞内叶酸代谢,从而抑制 DNA、RNA 和蛋白质的合成,对快速增殖的细胞(如cancer细胞和某些免疫细胞)有较强的抑制作用。基于DSPE-PEG 2000 -MTX的性能,脂质体MTX@DTX-Rh2-Lips的介绍如下:

MTX 

图:MTX 结构式

合成过程:

按照一定的摩尔比称取 DSPE-PEG 2000 -MTX、DTX、Rh2、卵磷脂、胆固醇等脂质成分,将称取好的脂质成分置于合适的圆底烧瓶中。加入适量的有机溶剂,使用磁力搅拌器在室温下搅拌使其充分溶解,形成均匀的脂质溶液。将上述含有脂质溶液的圆底烧瓶连接至旋转蒸发仪上,在一定的温度和旋转速度下进行旋转蒸发,直至在烧瓶内壁形成一层均匀、透明的脂质膜,整个蒸发过程通常需要持续一段时间,过程中观察脂质膜的形成情况,避免出现局部过厚或不均匀等现象。向形成脂质膜的圆底烧瓶中缓慢加入预先配制好的缓冲溶液,使脂质膜充分水合,这个过程可以在一定温度下进行,并使用磁力搅拌器继续搅拌,促进脂质体的形成。之后可将得到的脂质体初溶液转移至超声仪中,选择合适的超声模式进行超声处理,进一步分散脂质体,使其粒径更加均匀,超声处理后得到相对均匀的脂质体分散液。随后进行纯化与表征。


机制示意 图:机制示意

结论:

该文献成功制备出基于DSPE-PEG 2000 -MTX合成的脂质体MTX@DTX-Rh2-Lips。研究结果表明,MTX@DTX-Rh2-Lips呈均匀球形且稳定,能够有效靶向tumour部位,抑制SKOV3细胞的增殖、侵袭、转移和Blood vessels生成,并影响tumour相关蛋白的表达,具有良好的效果。