High-Throughput LC-MS/MS Platform for Comprehensive Sulfotranferase Phenotyping and Inhibition
Poster Authors:
Jing Lai, Gang Yang, Yushi Cao, Xuehua Zhang, Yi Li, Bojia Liu, Youpeng Yang, Ning Yang, Mandy Xu
Pharmaron Beijing Co., Ltd. (China)
Understanding sulfotransferase phenotyping is critical in modern drug discovery. Pharmaron’s validated LC-MS/MS platform offers a high-throughput solution for characterizing human SULT enzyme activity and inhibition—helping predict metabolism, drug–drug interactions, and clearance rates more reliably. Download our poster to explore how novel probe substrates improve accuracy and speed in SULT inhibition profiling.
Why Sulfotransferase Phenotyping Matters
Sulfotransferases (SULTs) are a key group of Phase II metabolic enzymes involved in the sulfonation of drugs, hormones, and xenobiotics. They regulate compound clearance, bioavailability, and interaction risk. With 18 human SULT genes across five families, phenotyping and inhibition analysis is vital during early-stage drug screening.
Pharmaron’s LC-MS/MS platform characterizes six key human SULT isoforms: SULT1A1, SULT1A2, SULT1A3, SULT1B1, SULT1E1, and SULT2A1
Using optimized probe substrates—like 4-Methylumbelliferone, 1-Naphthol, 17β-Estradiol, and DHEA—the platform enables precise SULT inhibition and Phase 2 SULT metabolism assessments.
Next-Gen Tools for SULT Inhibition Analysis
High-throughput assay benefits:
- Km and IC50 determination for each SULT isoform
- Minimized matrix effects via substrate-specific LC-MS/MS optimization
- Rapid identification of drug–SULT interactions using inhibitors such as quercetin, resveratrol, baicalein, and testosterone
Validated with recombinant human enzymes, these assays offer robust data on enzyme kinetics and inhibitor potency.
Application of SULT Phenotyping in Drug Development
Our platform supports:
- Identification of substrate specificity
- Screening for inhibitory interactions
- Predictive clearance models using incubation time and protein concentration analysis
The data-rich output enables early detection of metabolic red flags and reduces late-stage clinical risk.
Download the Poster to Learn More
Our LC-MS/MS-based sulfotransferase phenotyping platform is built for pharmaceutical R&D teams who need speed, accuracy, and insight. Download the full poster to access:
- Full assay validation details
- Enzyme-specific substrate tables
- Inhibitor profiling data
- Graphical method development summaries
Download the Poster Now – Streamline your drug metabolism testing today.