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Related Experiment Video

Updated: Aug 24, 2025

Shotgun Lipidomics of Rodent Tissues
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High Sensitivity and Wide Linearity LC-MS/MS Method for Oxylipin Quantification in Multiple Biological Samples.

Xian Fu1, Hou-Hua Yin1, Ming-Jun Wu2

  • 1Center for Novel Target & Therapeutic Intervention, Institute of Life Sciences, Chongqing Medical University, Chongqing, China.

Journal of Lipid Research
|October 20, 2022
PubMed
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A new liquid chromatography-tandem mass spectrometry method enhances oxylipin quantification. This sensitive technique offers wide linearity, enabling precise analysis of low-abundance oxylipins in various biological samples.

Area of Science:

  • Biochemistry
  • Analytical Chemistry
  • Metabolomics

Background:

  • Oxylipins are crucial biological regulators with diverse physiological roles.
  • Quantitative analysis of oxylipins is challenging due to low concentrations, variability, and structural similarity.
  • Accurate oxylipin profiling is essential for understanding their involvement in health and disease.

Purpose of the Study:

  • To develop a highly sensitive and linear liquid chromatography-tandem mass spectrometry (LC-MS/MS) method for oxylipin quantification.
  • To improve the resolution and reduce detection crosstalk for a wide range of oxylipins.
  • To enable simultaneous quantification of oxylipins across a broad concentration range in multiple biological matrices.

Main Methods:

  • Development of an LC-MS/MS based analytical method.
Keywords:
biological regulatorslinear rangelipoxinsliquid chromatography-tandem mass spectrometrylower limits of quantitationplasma samplesquantitative profilingquantitative sensitivityreduced sample consumptionresolvins

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  • Utilized a 150 mm column for chromatographic separation over 20 minutes.
  • Optimization for high sensitivity, wide linearity, and acceptable resolution.

    • Main Results:

    • Successfully separated 104 oxylipins, including those prone to detection crosstalk.
    • Achieved high sensitivity with lower limits of quantification (LOQ) for 87 oxylipins (0.05-0.5 pg).
    • Demonstrated exceptionally wide linear ranges (up to 40,000-fold) for numerous oxylipins.
    • Quantified a significant number of low-abundance oxylipins (e.g., lipoxins, resolvins) in mouse plasma, mouse liver, and human plasma samples.
    • Enabled simultaneous quantification of analytes with over 1,000-fold concentration differences.

    Conclusions:

    • The developed LC-MS/MS method significantly enhances quantitative sensitivity and linear range compared to existing techniques.
    • This advanced method facilitates the accurate profiling of a comprehensive oxylipin panel in complex biological samples.
    • The improved analytical capabilities will advance research into the physiological and pathophysiological functions of oxylipins.