用于选择性杀死癌细胞的trail增强剂的制作方法_5

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[0309] 表1 :评价的化合物
[0310]
[0311]
[0312] 表2 :合成用于晡乳动物细朐中的结构-活件关系研究的化合物(N-酰基高丝氨 酸内醅的天然存在的或合成的衍牛物)的牛物学活件。
[0313]
[0314] *相对于N-(3_氧代-十二烷酰基)高丝氨酸内酯(化合物#1,在文中也被简写 为(C12))的活性,将化合物的活性标准化。
[0315] 材料和方法
[0316] A.通用方法
[0317] 癌症和正常细胞培养。肺癌细胞系A549和结肠癌细胞系HT29购自ATCC。乳腺癌细 胞系 MDA-MB-468 接收自 J.C.Reed(The Burnham Institute,La Jolla,California)。细胞 系被保持在培养基(GM):补充有10% FBS(HyCl〇ne,L〇gan,UT),L-谷氨酰胺,青霉素/链霉 素和非必需氨基酸的DMEM培养基(4. 5g/l葡萄糖)(Invitrogen,Carlsbad,CA)。正常人支 气管上皮(NHBE)细胞和正常人乳腺上皮(NHME)细胞获自Cambrex (East Rutherford,NJ) 并且按照生产者的建议培养。正常人结肠平滑肌细胞获得自ScienCell Research Lab (San Diego, CA)并按照生产者的建议培养。人肝细胞的原代培养物(新鲜涂板;未冷冻保存) 和培养基获得自Celsis In Vitro Technologies(Baltimore,MD)。在收到细胞后,轻柔地 自各孔中吸出培养基并且再用补充有Torpedo Antibiotic Mix的InVitroGRO HI培养基 (Celsis)装满,并将平板保持在5% C02,在37°C,在饱和湿度的培养箱中。2-4h后,如正文 和图例所述地刺激细胞。
[0318] 小鼠、来源于骨髓的巨噬细胞和其他细胞培养物。C57BL/6小鼠购买自Jackson Laboratory (Bar Harbor,ME)。来源于骨髓的巨噬细胞(BMDM)和鼠胚胎成纤维细胞(MEF) 通过使用由TSRI Animal Care and Use Committee批准的标准程序制备。L929/NCTC克 隆929 (结缔组织,小鼠)细胞系购买自ATCC (Manassas,VA)。MEF和L929细胞系被保持在 GM中(见以上)。BMDM在70%GM和30%L929条件培养基中培养。通常,在刺激前将细胞 (~60-70%汇合率)在新鲜培养基中温育12-14h。
[0319] 细菌培养物。我们的研究中使用的铜绿假单胞菌细菌菌株由Dr. Scott A. Beatson,University of Queensland,Brisbane,Australia 友好地提供并且包括野生型 铜绿假单胞菌PA01 (最初来源于ATCC)和PA01 A lasl。用于对照研究的细菌菌株包括鲍 氏不动杆菌(Acinetobacter baumannii)、大肠杆菌(Escherichia coli)、金黄色葡萄球菌 和鼠伤寒沙门氏菌,其都来自ATCC。
[0320] 试剂和标准测定。重组人TRAIL购买自R&D System,Inc (Minneapolis,MN),并 且以20ng/ml的浓度或如图例中所示的浓度用于所有实验中的细胞刺激。将表达重组蛋 白mTRAIL的变体118-291的大肠杆菌的细菌培养物用于制备重组鼠TRAIL,其通过在DE52 和羟基磷灰石上的标准离子交换色谱法分离。如之前所述那样制备S. minnesota Re595 LPSE1。所有酰基高丝氨酸内酯,包括N- (3-氧代十二烷酰基)-S-和-R-高丝氨酸内酯(分别 为C12和C12R),如之前所述的那样合成和纯化E2。纯度大于99 %并且通过HPLC/质谱法分 析确认。将所有合成的分子以所需浓度的200x溶
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