DSPE-PEG-NHS介导的CpG递送系统设计与免疫活性评价
DSPE-PEG-NHS介导的CpG递送软件系统装修设计与抗体活性酶类品价链接代码://link.springer.com/article/10.1007/s12257-020-0366-1小说作家:Jiwon Yang, Eun Seo Choi, Gayeon You & Hyejung Mok 小结:本着CpG寡脱氧核苷酸(CpG)还具有专业的纯天然免疫检测检测影响用,定制开拓CpG膜蛋白是推动提极有效率能率肿瘤纯天然免疫检测检测*的先决基本条件。本科研将1,2-二硬脂酰-sn-甘油-3-磷酸甲醇胺-N-[羟基虎珀酰亚胺(聚乙二醇)] (DSPE-PEG-NHS) 与聚氯乙烯亚胺 (PEI) 偶联,定制开拓出某种PEI-PEG-DSPE偶联物,可以作为营生物相融性的提极有效率能率CpG膜蛋白。企业定制开拓了四种PEIPEG-DSPE偶联物,多种不相同偶联物的PEI氧分子量不相同,DSPEPEG的表达数量只要相同,均展示出更为明显较低的癌内部系致癌性。基本一般说来,与经过纯天然PEI递送CpG相对比,以摩尔比0.1递送PEI (25 kDa)-PEG-DSPE和DSPE-PEG-NHS/(PEI的胺基)可造成RAW264.7癌内部系对CpG的吸收的效应最高,这机会是随着产生疏水性树脂脂质组成部分。除此以外,PEI-PEG-DSPE/CpG黏结物可引诱RAW264.7癌内部系更为明显产生癌内部系因素(TNF-α),其用与PEI/CpG黏结物等于。由此,PEI-PEG-DSPE偶联物可以作为营生物相融性的提极有效率能率膜蛋白,将纯天然免疫检测检测影响剂CpG递送货到巨噬癌内部系。古诗网:Considering the potent immune stimulation by CpG oligodeoxynucleotides (CpGs), the development of CpG carriers is a prerequisite for efficient cancer immunotherapy. In this study, we conjugated 1,2-distearoyl-sn-glycero-3-phosphoethanolamine-N-[hydroxyl succinimidyl (polyethylene glycol)] (DSPE-PEG-NHS) with polyethylenimine (PEI) to develop a PEI-PEG-DSPE conjugate that can serve as a biocompatible and efficient CpG carrier. Five types of PEIPEG-DSPE conjugates were developed, each with different molecular weights of PEI and different degrees of DSPEPEG modification, and all exhibited significantly lower cytotoxicity. In particular, compared to CpG delivery via natural PEI, delivery with PEI (25 kDa)-PEG-DSPE and DSPE-PEG-NHS/(amine groups of PEI) at a molar ratio of 0.1 resulted in a higher uptake of CpGs into RAW264.7 cells, probably because of the presence of a hydrophobic lipid moiety. In addition, PEI-PEG-DSPE/CpG complexes triggered significant cytokine secretion (TNF-α) from RAW264.7 cells, comparable to that triggered by PEI/CpG complexes. Thus, PEI-PEG-DSPE conjugates could serve as biocompatible and efficient carriers of the immune stimulator CpG to the macrophages.