As an important mediator of allergic inflammation, mast cell tryptase is involved in the induction of hypersensitivity, infiltration of inflammatory cells and tissue remodeling in respiratory tract. The effects of try...As an important mediator of allergic inflammation, mast cell tryptase is involved in the induction of hypersensitivity, infiltration of inflammatory cells and tissue remodeling in respiratory tract. The effects of tryptase inhibitors on the actions of tryptase show further the potential of tryptase in the pathogenesis of asthma and its inhibitors in the treatment of asthma.展开更多
目的研究类胰蛋白酶对人乳腺癌细胞系MDA-MB-435侵袭力的影响及其机制。方法通过体外细胞侵袭力试验观察不同浓度、不同时间类胰蛋白酶对乳腺癌MDA-MB-435细胞跨膜侵袭力的影响，并利用RT-PCR以及明胶酶谱法研究类胰蛋白酶对基质金属蛋...目的研究类胰蛋白酶对人乳腺癌细胞系MDA-MB-435侵袭力的影响及其机制。方法通过体外细胞侵袭力试验观察不同浓度、不同时间类胰蛋白酶对乳腺癌MDA-MB-435细胞跨膜侵袭力的影响，并利用RT-PCR以及明胶酶谱法研究类胰蛋白酶对基质金属蛋白酶-2（matrix metalloproteinase-2，MMP-2）和金属蛋白酶组织抑制物（tissue inhibitor of metalloproteinases-2，TIMP-2）表达水平的调节。结果150～500pmol／L的类胰蛋白酶可以促进MDA-MB-435细胞的跨膜侵袭；还可以促进MMP-2、TIMP-2的mRNA表达（P〈0．01）和MMP-2的蛋白表达（P〈0．05）。结论类胰蛋白酶可以促进人乳腺癌细胞系MDA-MB-435细胞的跨膜侵袭，该作用可能与增加MMP-2的mRNA和蛋白表达、TIMP-2的mRNA表达相关。展开更多
Thyptase,a predominant serine protease in mast cells,is released by mast cell degranulation in an enzymatically active form.Recent research suggests that ttyptase plays important roles in mast cell mediated anaphylaxi...Thyptase,a predominant serine protease in mast cells,is released by mast cell degranulation in an enzymatically active form.Recent research suggests that ttyptase plays important roles in mast cell mediated anaphylaxis,angiogenesis,initiation and promotion of neoplasm.This paper reviews tryptase’s struture,molecular biology,biochemistry,processing,activation and its relationship with diseases.展开更多
文摘As an important mediator of allergic inflammation, mast cell tryptase is involved in the induction of hypersensitivity, infiltration of inflammatory cells and tissue remodeling in respiratory tract. The effects of tryptase inhibitors on the actions of tryptase show further the potential of tryptase in the pathogenesis of asthma and its inhibitors in the treatment of asthma.
文摘目的研究类胰蛋白酶对人乳腺癌细胞系MDA-MB-435侵袭力的影响及其机制。方法通过体外细胞侵袭力试验观察不同浓度、不同时间类胰蛋白酶对乳腺癌MDA-MB-435细胞跨膜侵袭力的影响，并利用RT-PCR以及明胶酶谱法研究类胰蛋白酶对基质金属蛋白酶-2（matrix metalloproteinase-2，MMP-2）和金属蛋白酶组织抑制物（tissue inhibitor of metalloproteinases-2，TIMP-2）表达水平的调节。结果150～500pmol／L的类胰蛋白酶可以促进MDA-MB-435细胞的跨膜侵袭；还可以促进MMP-2、TIMP-2的mRNA表达（P〈0．01）和MMP-2的蛋白表达（P〈0．05）。结论类胰蛋白酶可以促进人乳腺癌细胞系MDA-MB-435细胞的跨膜侵袭，该作用可能与增加MMP-2的mRNA和蛋白表达、TIMP-2的mRNA表达相关。
文摘Thyptase,a predominant serine protease in mast cells,is released by mast cell degranulation in an enzymatically active form.Recent research suggests that ttyptase plays important roles in mast cell mediated anaphylaxis,angiogenesis,initiation and promotion of neoplasm.This paper reviews tryptase’s struture,molecular biology,biochemistry,processing,activation and its relationship with diseases.
