Dr. Lingjun Li

Lingjun received her BE degree in Environmental Analytical Chemistry from Beijing Polytechnic University and a PhD degree in Analytical Chemistry/Biomolecular Chemistry from University of Illinois at Urbana-Champaign. She did three-way postdoctoral research at the Pacific Northwest National Laboratory, Brandeis University, and University of Illinois before joining the School of Pharmacy faculty in 2002. She currently holds joint appointments in the School of Pharmacy and Department of Chemistry at UW-Madison, as well as being named Charles Melbourne Johnson Distinguished Chair and Vilas Distinguished Achievement Professor.

PhD #47

Welcoming Dr. Yang Liu

Yang Liu, a distinguished member of the research group successfully defended her thesis, "Mass Spectrometry-based Neuropeptidomic Study and Functional Discovery of Signaling Peptides." As the daughter of highly accomplished mass spectrometrists, she had a high bar to meet. We are happy to report she has gone above and beyond!

Congratulations!!

Nature Communications

Despite extensive efforts on probing the mechanism of Alzheimer’s disease (AD) and enormous investments into AD drug development, the lack of effective disease-modifying therapeutics and the complexity of the AD pathogenesis process suggest a great need for further insights into alternative AD drug targets. Herein, we focus on the chiral effects of truncated amyloid beta (Aβ) and offer further structural and molecular evidence for epitope region-specific, chirality-regulated Aβ fragment self-assembly and its potential impact on receptor-recognition. 

Molecular basis for chirality-regulated Aβ self-assembly and receptor recognition revealed by ion mobility-mass spectrometry

Nature Communications

Comprehensive protein identification and concomitant structural probing of proteins are of great biological significance. However, this is challenging to accomplish simultaneously in one confined space. Here, we develop a nanosecond photochemical reaction (nsPCR)-based click chemistry, capable of structural probing of proteins and enhancing their identifications through on-demand removal of surrounding matrices within nanoseconds. The nsPCR is initiated using a photoactive compound, 2-nitrobenzaldehyde (NBA), and is examined by matrix-assisted laser desorption/ionization-mass spectrometry (MALDI-MS)....

Nanosecond photochemically promoted click chemistry for enhanced neuropeptide visualization and rapid protein labeling

Analytical Chemica Acta

Deer-hide gelatin (DHG) is an important animal-derived traditional Chinese medicine (TCM), which has been applied in TCM for over 400 years. However, it is extremely difficult to distinguish DHG with adulteration or made with other animal skins due to the highly processing procedure. Therefore, a simple strategy for identifying species-specific peptide biomarkers in deer-hide gelatin (DHG) is needed. In the present study, untargeted and targeted mass spectrometry approaches were implemented to analyze comprehensive peptidomic profiles of trypsin-digested animal...

A strategy for identifying species-specific peptide biomarkers in deer-hide gelatin using untargeted and targeted mass spectrometry approaches

Analytical Chemistry

Mass Spectrometry Imaging of N-Glycans from Formalin-Fixed Paraffin-Embedded Tissue Sections Using a Novel Subatmospheric Pressure Ionization Source

Dual-Functional Titanium(IV) Immobilized Metal Affinity Chromatography Approach for Enabling Large-Scale Profiling of Protein Mannose-6-Phosphate Glycosylation and Revealing Its Predominant Substrates

Analytical Chemistry

Multiplex Quantitative Glycomics Enabled by Periodate Oxidation and Triplex Mass Defect SUGAR Tags

Li Research Group

 University of Wisconsin Madison

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