摘要
背景:胆管癌(CCA)预后差,只有有限的姑息治疗选择。脂联素和腺苷单磷酸活化蛋白激酶(AMPK)信号的缺乏在几种恶性肿瘤中有报道,但这些蛋白在CCA中的改变尚不清楚。目的:本研究旨在评估脂联素和AMPK信号在CCA中的作用。此外,AdipoRon作为一种新型脂联素受体(AdipoR)激动剂,在体外和体内被评价为一种新的抗CCA肿瘤治疗药物。 方法:采用免疫组化染色(IHC)检测AdipoR1和p-AMPKα在人组织微阵列(TMAs)中的表达。采用CCA工程小鼠模型(AlbCre/LSL-KRASG12D/p53L/L),研究了2-(4-苯甲酰苯氧基)- n -[1-(苯基甲基)- 4-哌啶基]-乙酰胺(AdipoRon)在体外和体内的增殖、结晶紫、迁移、侵袭、集落形成、衰老、细胞周期和凋亡的影响。应用RT-qPCR和western blot方法研究小鼠组织的分子变化。 结果:与邻近的非肿瘤组织相比,人CCA组织中的AdipoR1和p-AMPKα受损。CCA组织中AdipoR1与p-AMPKα水平呈正相关。AdipoRon对细胞增殖、迁移、侵袭和集落形成的抑制作用呈时间和剂量依赖性(p<0.05)。此外,与对照组相比,AdipoRon治疗组减少了CCA数量和肿瘤体积,延长了生存期,减少了转移和腹水(p<0.05)。 结论:AdipoR1和p-AMPKα在CCA组织中受损,AdipoRon在体外和体内均能有效抑制CCA。因此,AdipoRon可能被认为是CCA中潜在的抗肿瘤治疗药物。
关键词: 脂肪受体激动剂,脂肪素,脂联素,胆管癌,治疗,小鼠组织。
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