LC-MS-Based Peptide Quantitative Assays Service
- LC-MS raw data files
- Peptide quantification result tables
- Quantitative spectra and peak plot files
- Comprehensive analysis report (PDF format)
MtoZ Biolabs has launched the LC-MS-based peptide quantitative assays service which enables comprehensive and precise quantitative analysis of peptides. This service is widely applied in proteomics research, biomarker validation, and drug efficacy evaluation, providing reliable data support for peptide quantification and biological mechanism studies.
Overview
Peptides are biological molecules formed by amino acids linked through peptide bonds, playing essential roles in cellular signaling, immune regulation, and metabolic control. Peptide quantification is critical for investigating protein expression changes, drug effects, and biomarker discovery. Leveraging the high sensitivity and resolution of liquid chromatography–mass spectrometry (LC-MS), this method precisely separates and detects peptide signals, achieving accurate quantification and comparative analysis. It offers indispensable support for functional protein studies and systems biology research.
LC-MS-Based Peptide Quantitative Assays Service at MtoZ Biolabs
1. Targeted Peptide Quantification
MtoZ Biolabs utilizes a high-resolution LC-MS platform to achieve precise quantification of specific target peptides, suitable for validating candidate biomarkers and evaluating pharmacodynamic responses.
2. Global Peptidomic Quantification
Using label-free or isotope labeling strategies, MtoZ Biolabs performs systematic quantification of peptides across entire samples, revealing expression differences under various experimental conditions.
3. Modified Peptide Quantification
By combining enrichment techniques with mass spectrometry detection, MtoZ Biolabs sensitively quantifies modified peptides such as phosphorylated or acetylated forms, supporting studies on dynamic post-translational modifications.
Workflow of LC-MS-Based Peptide Quantitative Assays Service
1. Sample Preparation
Polypeptide samples are purified, desalted, and concentration-adjusted to meet mass spectrometry detection requirements.
2. Liquid Chromatography Separation
High-performance liquid chromatography (LC) is used to separate complex peptide mixtures, reducing matrix interference and improving detection sensitivity.
3. Mass Spectrometry Detection
High-resolution mass spectrometry (MS) is applied to detect the separated peptides, enabling highly accurate quantification.
4. Data Analysis
Professional software is used for peak area integration, calibration curve fitting, and relative or absolute quantification calculations.
5. Result Reporting
A comprehensive report including quantitative results, spectra, and statistical analyses is provided, offering reliable data support for peptide research.
Shuken, S R. et al. Journal of Proteome Research, 2023.
Figure 1. The Workflow of Peptide Quantitative Analysis Based on LC-MS.
Why Choose MtoZ Biolabs?
✅ High Sensitivity Detection: Enables precise quantification and dynamic monitoring of low-abundance peptides.
✅ High-Resolution Analysis: Ensures effective separation and accurate quantification of peptide signals in complex samples.
✅ Multiple Quantification Strategies: Supports various modes, including label-free, isotope-labeled, and targeted quantification.
✅ Strong Data Reliability: Standardized workflows guarantee reproducibility and comparability of results.
✅ Comprehensive Technical Support: Covers the entire process from sample preparation to mass spectrometry detection and data interpretation.
Applications of LC-MS-Based Peptide Quantitative Assays Service
1. Biomarker Research
Used for quantitative analysis of disease-associated peptides to screen and validate potential diagnostic or prognostic biomarkers.
2. Signaling Pathway Studies
Reveals dynamic changes of peptides involved in cellular signaling and regulatory processes.
3. Metabolic Mechanism Analysis
Analyzes peptide abundance variations under different conditions to explore metabolic network alterations.
4. Modification Quantification
Evaluates dynamic changes and regulatory patterns of modified peptides such as phosphorylation and acetylation.
5. Quality Control
Applied for assessing batch consistency and stability of peptide samples or biopharmaceutical products.
Deliverables
1. Comprehensive Experimental Details
2. Materials, Instruments, and Methods
3. Quantitative Peptide Result Tables
4. Quantitative Spectra and Peak Plots
5. Comprehensive Analysis Report
6. Raw Data Files
FAQ
Q1: What types of samples are suitable?
A1: The LC-MS-based peptide quantitative assays service is suitable for various peptide samples, including synthetic peptides, recombinant peptides, and biological extracts. To ensure analytical accuracy, it is recommended that samples have high purity and are free from salts, buffers, or other contaminants.
Q2: What is the service general workflow?
A2:
Q3: What data formats are provided?
A3: The deliverables include standardized, multi-format data results. Regular deliverables include:
If special analytical requirements exist, data formats can be customized according to project specifications.
Q4: How should I prepare my samples?
A4: To ensure analytical quality and reproducibility, please follow these guidelines:
(1) Purity requirements: Avoid high salt, buffer residues, and other contaminants.
(2) Storage conditions: Store at -20℃ for short term, or -80℃ for long term.
(3) Transportation: Ship with cold chain or dry ice, ensuring proper sealing, leak prevention, and clear sample labeling.
For more information, please refer to Sample Submission Guidelines for Proteomics, Sample Submission Guidelines for Metabolomics.
Start Your Project with MtoZ Biolabs
Contact us to discuss your experimental design or request a quote. Whether you aim to explore peptide quantification characteristics or study their dynamic changes in biological processes, MtoZ Biolabs provides high-sensitivity and reliable LC-MS quantitative analysis support.
How to order?
