Mass Spectrometry-Based Analysis of Serum N-Glycosylation Changes in Patients with Parkinson's Disease

Mingming Xu, Hong Jin, Zhen Wu, Ying Han, Jing Chen, Chengjie Mao, Piliang Hao, Xumin Zhang, Chun Feng Liu, Shuang Yang*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)

Abstract

It is urgently needed to find reliable biofluid biomarkers for early diagnosis of Parkinson's disease in order to achieve better treatment. Promising biomarkers can be found in Parkinson's disease-related glycoproteins as aberrant protein glycosylation plays an important role in disease progression. However, current information on serum N-glycoproteomic changes in Parkinson's disease is still limited. Here, we used glycoproteomics methods, which combine the solid-phase chemoenzymatic method, lectin affinity chromatography, and hydrophilic interaction chromatography with high-resolution mass spectrometry, to analyze the glycans, glycosites, and intact glycopeptides of serum. Increased abundance of glycans containing core fucose, sialic acid, and bisecting N-acetyl glucosamine was detected at the overall glycan level and also at specific glycosites of glycopeptides. Five Parkinson's disease-associated proteins with this type of N-glycosylation changes were also identified. We propose that the revealed site-specific N-glycosylation changes in serum can be potential biomarkers for Parkinson's disease.

Original languageEnglish
Pages (from-to)1719-1726
Number of pages8
JournalACS Chemical Neuroscience
Volume13
Issue number12
DOIs
Publication statusPublished - 15 Jun 2022
Externally publishedYes

Keywords

  • Parkinson's disease
  • biomarker
  • glycosylation
  • mass spectrometry
  • serum

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