在5毫升无水氯仿/甲醇/三乙胺溶剂混合物(4.5:0.5:0.05 v/v)中,用20倍摩尔过量的NHS/EDC(1:1摩尔比)活化6毫克MAL-PEG(3000)-MMP2-COH过夜。在4°C氮气保护下,使活化的MAL-PEG(3000)-MMP2-NHS与10倍摩尔过量的DOPE反应2小时。使用氯仿/甲醇(4:1 v/v)作为流动相,在制备型铝TLC板(硅胶60 F254,20 x 20 cm,Merck)上纯化反应。纯化冷冻干燥的残留物,并在-20°C下储存,以获得产品1,2-二油酰-SN-甘油-3-磷酰乙醇胺。
生物活性1,2-二油酰-sn-甘油-3-磷酰乙醇胺(DOPE)是阳离子脂质体的中性辅助脂质(helper lipid),与阳离子磷脂结合,提高裸siRNA的转染效率。
靶点IC50: helper lipid for liposome
体外研究在这项研究中,每种siRNA被封装在LNP(cationic lipid-A: PEG2000-DMPE: DOPE = 47.8: 5.18: 47.1摩尔百分比)中。含有DOPE的脂质体表现出融合性,LNP/siRNA显著抑制了巨噬细胞和树突状细胞中的CD45蛋白表达,抑制率为30%,但不影响单核细胞、中性粒细胞、浆细胞样树突状细胞或B细胞。该LNP系统不仅适用于小鼠,也适用于人类的巨噬细胞和树突状细胞,显示出高效的siRNA递送潜力。
中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
1-油酰基-2-羟基-sn-甘油-3-磷酸乙醇胺 | 1-oleoyl-2-hydroxy-sn-glycero-3-phosphoethanolamine | 89576-29-4 | C23H46NO7P | 479.595 |
1,2-二油酰基-sn-甘油 | 1,2-dioleoyl-sn-glycerol | 24529-88-2 | C39H72O5 | 620.998 |
—— | 1,2-dioleoylglycerol | 2442-61-7 | C39H72O5 | 620.998 |
中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
1,2二硬酯酸-3磷脂酰乙醇胺 | 1,2-distearoyl-sn-glycero-3-phosphoethanolamine | 1069-79-0 | C41H82NO8P | 748.078 |
—— | 1,2-dioleoyl-sn-glycero-3-phosphoethanoloamine-N-prop-2'-ynamide | 910227-37-1 | C44H78NO9P | 796.078 |
—— | (Z)-(2R)-3-(((2-(4-aminobutanamido)ethoxy)(hydroxy)phosphoryl)oxy)propane-1,2-diyl dioleate | 1415981-77-9 | C45H85N2O9P | 829.152 |
—— | (Z)-(2R)-3-(((2-(2-(2-(2-aminoacetamido)acetamido)acetamido)ethoxy)(hydroxy)phosphoryl)oxy)propane-1,2-diyl dioleate | 1415981-84-8 | C47H87N4O11P | 915.202 |
1-油酰基-2-羟基-sn-甘油-3-磷酸乙醇胺 | 1-oleoyl-2-hydroxy-sn-glycero-3-phosphoethanolamine | 89576-29-4 | C23H46NO7P | 479.595 |
—— | dioleoyl-sn-glycero-3-phosphoethanolamine-N-[3-(2-pyridyldithio)propionate] | 186133-87-9 | C49H85N2O9PS2 | 941.328 |
—— | DOPE-Ad-ONSu | 930280-91-4 | C51H89N2O13P | 969.247 |
—— | (Z)-(2R)-3-(((2-((2E,4E,6E,8E)-3,7-dimethyl-9-(2,6,6-trimethylcyclohex-1-en-1-yl)nona-2,4,6,8-tetraenamido)ethoxy)(hydroxy)phosphoryl)oxy)propane-1,2-diyl dioleate | 1415981-98-4 | C61H104NO9P | 1026.47 |
—— | (Z)-(2R)-3-(((2-(5-(((2E,4E,6E,8E)-3,7-dimethyl-9-(2,6,6-trimethylcyclohex-1-en-1-yl)nona-2,4,6,8-tetraen-1-yl)oxy)-5-oxopentanamido)ethoxy)(hydroxy)phosphoryl)oxy)propane-1,2-diyl dioleate | 1415981-76-8 | C66H112NO11P | 1126.59 |
—— | (Z)-(2R)-3-(((2-(4-((2E,4E,6E,8E)-3,7-dimethyl-9-(2,6,6-trimethylcyclohex-1-en-1-yl)nona-2,4,6,8-tetraenamido)butanamido)ethoxy)(hydroxy)phosphoryl)oxy)propane-1,2-diyl dioleate | 1415981-78-0 | C65H111N2O10P | 1111.58 |
—— | (Z)-(2R)-3-(((((14E,16E,18E,20E)-15,19-dimethyl-4,7,10,13-tetraoxo-21-(2,6,6-trimethylcyclohex-1-en-1-yl)-3,6,9,12-tetraazahenicosa-14,16,18,20-tetraen-1-yl)oxy)(hydroxy)phosphoryl)oxy)propane-1,2-diyl dioleate | 1415981-85-9 | C67H113N4O12P | 1197.63 |
甘油三油酸酯 | trioleoylglycerol | 122-32-7 | C57H104O6 | 885.449 |