【摘 要】
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Tissue factor pathway inhibitor-2 (TFPI-2) is a 32 kDa matrix-associated Kunitz-type serine proteinase inhibitor consisting of a short amino-terminal region,thr
【机 构】
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Key Lab of Molecular Medicine, Ministry of Education, Shanghai Medical College, Fudan University, Sh
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Tissue factor pathway inhibitor-2 (TFPI-2) is a 32 kDa matrix-associated Kunitz-type serine proteinase inhibitor consisting of a short amino-terminal region,three tandem Kunitz-type domains,and a positively charged carboxyterminal tail.Human TFPI-2 (hTFPI-2) inhibits a broad spectrum of serine proteinases (including trypsin,plasmin,plasma kallikrein,XIa,and chymotrypsin) almost exclusively via its first Kunitz-type domain,and potentially plays an important role in the regulation of extracellular matrix digestion and remodeling [1].Reduced TFPI-2 synthesis has been related to numerous pathophysiological processes such as inflammation,angiogenesis,atherosclerosis [2,3],retinal degeneration,and tumor growth/metastasis [4-6].It has been suggested that TFPI-2 is a tumor suppressor gene in some cancers [7,8].However,the specific physiological functions of hTFPI-2 in humans are unclear,particularly its interactions with other proteins.To better understand the physiological function of hTFPI-2,we used yeast two-hybrid system screening and bioinformatics analysis to identify its interacting proteins and confirm its interactions with nuclear protein RASSF1C using confocal microscopy and co-immunoprecipitation.
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