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.

Andrew successfully defends his second-year thesis background examination!


Our third-year students are all officially dissertators! Congratulations Dylan, Jericha, Bin, Gutin, Yuan, Graham, Ashley, and Danqing!

DiLeuPMP: A Multiplexed Isobaric Labeling Method for Quantitative Analysis of O-Glycans

Analytical Chemistry

As one of the most important post-translational modifications, glycosylation plays a pivotal role in many essential physiological functions, including cell recognition, signaling, and immune response. Thus, various qualitative and quantitative analytical strategies for glycomic profiling have been developed in recent decades. However, while extensive efforts have been devoted to the analysis of N-glycans, high-throughput quantitative analysis of O-glycans is often overlooked and underexplored. This is partially due to the lack of a universal enzyme for the release of O-glycans from the protein backbone. Furthermore...

Dual-Functional Ti(IV)-IMAC Material Enables Simultaneous Enrichment and Separation of Diverse Glycopeptides and Phosphopeptides

Analytical Chemistry

Simultaneous enrichment and fractionation of diverse proteins/peptides possessing different post-translational modifications (PTMs) from the same biological samples is highly desirable to reduce sample consumption, avoid complicated sample processing, and enable studies of potential crosstalks between different PTMs. In this work, we report a new approach to enable simultaneous enrichment and separation of glycopeptides, phosphopeptides, and mannose-6-phosphate (M6P) glycopeptides by using a dual-functional Ti(IV)-IMAC material. Moreover, we also made the separation of neutral and sialyl glycopeptides and mono- and...

Recent developments and applications of quantitative proteomics strategies for high-throughput biomolecular analyses in cancer research

RSC Chemical Biology

Innovations in medical technology and dedicated focus from the scientific community have inspired numerous treatment strategies for benign and invasive cancers. While these improvements often lend themselves to more positive prognoses and greater patient longevity, means for early detection and severity stratification have failed to keep pace. Detection and validation of cancer-specific biomarkers hinges on the ability to identify subtype-specific phenotypic and proteomic alterations and the systematic screening of diverse patient groups. For this reason, clinical and scientific research settings rely on high throughput...

Acetyl‑CoA flux from the cytosol to the ER regulates engagement and quality of the secretory pathway

Analytical Chemistry

Quantification and Molecular Imaging of Fatty Acid Isomers from Complex Biological Samples by Mass Spectrometry

Chemnical Science

Exploring the Sexual Dimorphism of Crustacean Neuropeptide Expression Using Callinectes sapidus as a Model Organism

Journal of Proteome Research