Systematic Proteomic Analysis Identifies (cid:1) -Site Amyloid Precursor Protein Cleaving Enzyme 2 and 1 (BACE2 and BACE1) Substrates in Pancreatic (cid:1) -Cells

Systematic Proteomic Analysis Identifies (cid:1) -Site Amyloid Precursor Protein Cleaving Enzyme 2 and 1 (BACE2 and BACE1) Substrates in Pancreatic (cid:1) -Cells
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系统蛋白质组学分析鉴定胰腺 (cid:1) -细胞中的 (cid:1) -位点淀粉样蛋白前体蛋白裂解酶 2 和 1(BACE2 和 BACE1)底物

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发表时间:
2020
期刊:
影响因子:
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通讯作者:
M. Stoffel
M. Stoffel
中科院分区:
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文献类型:
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作者:
Ina Stützer;N. Selevsek;D. Esterházy;A. Schmidt;R. Aebersold;M. Stoffel

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背景:蛋白酶BACE2通过作用于未知底物库来调节(cid:1)细胞功能。结果:对胰岛(cid:1)细胞棚的分析揭示了新的BACE2和BACE1靶点。结论:BACE2及其同源物BACE1靶向多种底物,但自然只共享一小部分底物。意义:鉴定BACE2和1底物对于理解胰腺(cid:1)细胞功能至关重要。processtocompensateforincreasedinsulindemand。缺乏系统和定量的蛋白质组学分析来绘制(cid:1)细胞中BACE2及其同源物BACE1的天然底物库。体外和体内模型的功能丧失和功能获得研究确定了特异性和功能异质靶点。我们的分析揭示了BACE1/2在胞外结构域脱落中的非冗余作用,BACE1调节更广泛的(cid:1)细胞富集底物,包括癫痫6蛋白家族的两种蛋白(SEZ6LandSEZ6L2)。最后,我们的研究提供了对全球(cid:1)细胞脱落和分泌组的见解,这是揭示促进(cid:1)细胞家园平衡的新机制的重要先决条件,也是发现治疗靶点和生物标志物的资源。
Background: The protease BACE2 regulates (cid:1) -cell function by acting on an unknown substrate repertoire. Results: Analysis of the islet (cid:1) -cell sheddome reveals novel BACE2 and BACE1 targets. Conclusion: BACE2 and its homologue BACE1 target a diverse substrate repertoire, but naturally only share a small set of substrates. Significance: The identification of BACE2 and 1 substrates is crucial for understanding pancreatic (cid:1) -cell function. processtocompensateforincreasedinsulindemand.Deficiency a systematic and quantitative proteomic analysis to map the natural substrate repertoire of BACE2 and its homologue BACE1 in (cid:1) -cells. Loss- and gain-of-function studies of in vitro and in vivo models identified specific and functionally heterogeneous targets. Our analysis revealed non-redundant roles of BACE1/2 in ectodomain shedding with BACE1 regulating a broader and BACE2 a more distinct set of (cid:1) -cell-enriched substrates including two proteins of the seizure 6 protein family (SEZ6LandSEZ6L2).Lastly,ourstudyprovidesinsightsintothe global (cid:1) -cell sheddome and secretome, an important prerequi-site to uncover novel mechanisms contributing to (cid:1) -cell home-ostasis and a resource for therapeutic target and biomarker discoveries.
DOI: --
发表时间: 2003
期刊: Diabetes
影响因子: 7.7
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通讯作者: J. Buteau;S. Foisy;E. Joly;M. Prentki
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期刊: DIABETES
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DOI: 10.1021/ac025747h
发表时间: 2002-10-15
影响因子: 7.4
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