文献类型： 外文期刊

作者： Zhang, Xu ¹ ; Shi, Kejian ⁴ ; Mao, Jiahui ¹ ; Mao, Kerou ¹ ; Jia, Yangrui ¹ ; Zhang, Jiakun ⁵ ; Wang, Qingzhen ² ; Bai, Ru ² ; Gao, Fene ² ; Liu, Shihui ² ; Guo, Mengyu ² ; Qin, Fenglan ² ; Li, Shengmin ² ; Chen, Chunying ² ; Zhou, Huige ² ; Liu, Jing ² ; Chen, Fulin ¹ ;

作者机构： 1.Northwest Univ, Sch Med, Key Lab Resource Biol & Biotechnol Western China, Minist Educ, Xian 710069, Peoples R China

2.CAS Key Lab Biomed Effects Nanomat & Nanosafety, Beijing 100190, Peoples R China

3.CAS Ctr Excellence Nanosci, Natl Ctr Nanosci & Technol, Beijing 100190, Peoples R China

4.Capital Med Univ, Xuanwu Hosp, Dept Thorac Surg, Beijing 100053, Peoples R China

5.Hebei Acad Agr & Forestry Sci, Inst Biotechnol & Food Sci, Shijiazhuang 050051, Peoples R China

6.Chinese Acad Med Sci, Res Unit Nanosci & Technol, Beijing 100021, Peoples R China

关键词： Oral drug delivery system; Disulfide bond; Pancreatic cancer; Tumor penetration

期刊名称：NANO TODAY （ 影响因子：17.4； 五年影响因子：17.9 ）

ISSN： 1748-0132

年卷期： 2024 年 54 卷

页码：

收录情况： SCI

摘要： Compared with vein injection, oral administration is a preferred non-invasive and self-help treatment option for doctors and patients for cancer therapy. However, this convenient method has been severely limited by the harsh gastrointestinal tract (GI) and various biological barriers, such as the intestinal mucus/epithelial barrier and tumor matrix barrier. Those phenomena bring a huge challenge to the stability and efficiency of the oral drug delivery system that aims to improve the therapeutic effect of chemotherapy drugs. Liposomes owning good biocompatibility are able to maintain relative stability and reduce the toxic side effects of drugs. Nevertheless, liposomes still suffer from inaccurate drug release and low drug accumulation at the focus. To overcome the above problems and obtain a more efficient drug delivery platform, we screened the length of the carbon chain and introduced the disulfide bond (-S-S-) into Cerasome to prepare Cyssome. Results of our experiments prove that Cyssome owns the siliceous bodies (-Si-O-Si-) to keep them stable in the harsh environment of the gastro-intestinal tract and the appropriate Young's modulus to help them penetrate the intestinal mucus/epithelial layer, as well as the thick pancreatic cancer matrix. Meanwhile, the glutathione responsive structure in Cyssome will accelerate drug release in tumor tissues which significantly improves the bioavailability of gemcitabine and reduces the related side effects. The anticancer experiments on the pancreatic cancer model in vitro and in vivo prove that Cyssome takes great potential in comprehensively improving the efficacy of oral medication for pancreatic cancer.