目的:分析VI型胶原蛋白α1(collagen type VIalpha 1,Col6a1)在三阴性乳腺癌中的表达及其对三阴性乳腺癌细胞耐药性和干性的影响。方法:采用生物信息学方法分析Col6a1对三阴性乳腺癌患者预后的影响及在三阴性乳腺癌细胞中的表达以及与...
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目的:分析VI型胶原蛋白α1(collagen type VIalpha 1,Col6a1)在三阴性乳腺癌中的表达及其对三阴性乳腺癌细胞耐药性和干性的影响。方法:采用生物信息学方法分析Col6a1对三阴性乳腺癌患者预后的影响及在三阴性乳腺癌细胞中的表达以及与耐药相关蛋白ATP结合盒(ABC)超家族G成员2[TP-binding cassette(ABC)superfamily G member 2,ABCG2]的关系;采用免疫组化检测Col6a1在三阴性和非三阴性乳腺癌组织中的表达;采用MTT法检测Col6a1对三阴性乳腺癌细胞耐药性的影响;采用乳腺癌成球实验,检测Col6a1对三阴性乳腺癌细胞干性的影响。结果:Col6a1在三阴性乳腺癌患者中高表达,并与不良预后有关;Col6a1在三阴性乳腺癌组织及细胞系中过表达;Col6a1与ABCG2表达成正相关;Col6a1敲减后,三阴性乳腺癌细胞MDA-MB-231及Hs 578T对紫杉醇更敏感,并且会使这两种细胞的成球率降低。结论:Col6a1促进三阴性乳腺癌细胞耐药性及干性;Col6a1可作为三阴性乳腺癌治疗的一个潜在靶点。
Objective To investigate the cold preservation effect on rat livers of a modified storage method with self-made HYD *** The vascular bed of rat livers was expanded with an additional 20 to 40?ml self-made HYD soluti...
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Objective To investigate the cold preservation effect on rat livers of a modified storage method with self-made HYD *** The vascular bed of rat livers was expanded with an additional 20 to 40?ml self-made HYD solution/100?g liver. After resection of the liver, the extra HYD solution (expressed as % liver weight) was entrapped via portal infusion by tying off the supra- and infra-hepatic inferior vena cava. Forty rats were randomly divided into four groups including control group with conventional storage method, and 20%, 30% and 40% groups according to the amount of extra HYD solution. We compared the preservation effect of the modified storage method with that of the conventional storage method using an isolated perfused rat liver *** Bile production and all the indices of hepatic microcirculation including portal perfusion pressure, endothelin-1 in the effluent, trypan blue distribution time and histology were significantly superior in the modified method groups compared to those in the control group (P<0.05). The contents of dihydroxybenzoic acid (DHBA) in the modified method groups were significantly lower than those in the control group (P<0.05). Liver enzymes activities in the 30% group were markedly lower than those in the control group (P<0.05). The preservation effect on rat liver in the 30% group was the best among the modified method *** The modified cold storage method is effective and may have potential for clinical application in liver preservation.
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