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Retinyl Ester Analysis by Orbitrap Mass Spectrometry.

Jeroen W A Jansen1, Maya W Haaker1, Esther A Zaal1

  • 1Division of Cell Biology, Metabolism & Cancer, Faculty of Veterinary Medicine, Department of Biomolecular Health Sciences, Utrecht University, Utrecht, The Netherlands.

Methods in Molecular Biology (Clifton, N.J.)
|May 29, 2023
PubMed
Summary
This summary is machine-generated.

We developed a new method using high-resolution mass spectrometry for sensitive detection and quantification of retinyl esters. This technique accurately characterizes these light-sensitive molecules in biological samples.

Keywords:
Atmospheric pressure chemical ionizationHigh-performance liquid chromatographyMass spectrometryOrbitrapRetinolRetinyl estersVitamin A

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Area of Science:

  • Biochemistry
  • Analytical Chemistry
  • Molecular Biology

Background:

  • Retinoids are essential biomolecules, but their detection often relies on UV absorption.
  • Existing methods may lack the sensitivity or specificity for detailed retinyl ester analysis.
  • Understanding retinyl ester profiles is crucial in various biological contexts.

Purpose of the Study:

  • To establish a novel, highly sensitive method for identifying and quantifying retinyl ester species.
  • To characterize retinyl esters in complex biological matrices.
  • To advance the analytical techniques for retinoid research.

Main Methods:

  • Extraction of retinyl esters using the Bligh and Dyer method.
  • Separation of retinyl esters via High-Performance Liquid Chromatography (HPLC) over 40-minute runs.
  • Identification and quantification using high-resolution mass spectrometry (HRMS).

Main Results:

  • Successful identification and quantification of diverse retinyl ester species.
  • Demonstrated high sensitivity and specificity of the HRMS-based approach.
  • Validated the method for analyzing retinyl esters in biological samples, including hepatic stellate cells.

Conclusions:

  • High-resolution mass spectrometry provides a powerful tool for sensitive retinyl ester analysis.
  • The developed method offers improved characterization of retinoid metabolism.
  • This technique has significant implications for studying retinoid-related biological processes.