A Chemoenzymatic Histology Method for O-GlcNAc Detection.

A Chemoenzymatic Histology Method for O-GlcNAc Detection.
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用于 O-GlcNAc 检测的化学酶组织学方法。

DOI:
10.1002/cbic.201700515
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发表时间:
2017-12-14
期刊:
Chembiochem : a European journal of chemical biology
影响因子:
--
通讯作者:
Wu P
Wu P
中科院分区:
其他
文献类型:
--
作者:
Aguilar AL;Hou X;Wen L;Wang PG;Wu P

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通过添加或去除O-GlcNAc来修饰核蛋白和细胞质蛋白会动态地影响多种生物过程。在这里,我们提出了一种化学酶组织学方法来检测组织标本中的O-GlcNAc。我们将这种方法应用于小鼠器官的筛选,揭示了O-GlcNAc在不同组织结构中的特定分布模式。然后,我们利用我们的组织学方法在来自健康捐赠者和患有阿尔茨海默病的捐赠者的人脑样本中检测到O-GlcNAc,并发现健康捐赠者的样本中O-GlcNAc水平较高。我们还使用多癌组织阵列进行了分析,揭示了健康组织和癌症组织之间O-GlcNAc水平的不同,以及O-GlcNAc细胞在某些组织样本中的不同分布。因此,这种化学酶组织学方法在揭示O-GlcNAc在生理病理过程中的生物学方面具有巨大的潜力。
Modification of nuclear and cytoplasmic proteins by the addition or removal of O-GlcNAc dynamically impacts multiple biological processes. Here, we present the development of a chemoenzymatic histology method for the detection of O-GlcNAc in tissue specimens. We applied this method to screen murine organs, uncovering specific O-GlcNAc distribution patterns in different tissue structures. We then utilized our histology method for O-GlcNAc detection in human brain specimens from healthy donors and donors with Alzheimer’s disease and found higher levels of O-GlcNAc in specimens from healthy donors. We also performed an analysis using a multiple cancer tissue array, uncovering different O-GlcNAc levels between healthy and cancerous tissues, as well as different O-GlcNAc cellular distributions within certain tissue specimens. This chemoenzymatic histology method therefore holds great potential for revealing the biology of O-GlcNAc in physiopathological processes.
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