Tracing <em>de novo</em> Lipids using Stable Isotope Labeling LC-TIMS-TOF MS/MS

Katherine D. Castro; Lilian Valadares Tose; Matthew Willetts; Melvin A. Park; Marcela Nouzova; Fernando G. Noriega; Francisco Fernandez-Lima

doi:10.3791/65590

Trazabilidad de lípidos de novo mediante el marcaje de isótopos estables LC-TIMS-TOF MS/MS

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JoVE Journal Chemistry

Tracing de novo Lipids using Stable Isotope Labeling LC-TIMS-TOF MS/MS

Trazabilidad de lípidos de novo mediante el marcaje de isótopos estables LC-TIMS-TOF MS/MS

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07:12 min

August 23, 2024

DOI: 10.3791/65590-v

Katherine D. Castro¹, Lilian Valadares Tose¹, Matthew Willetts², Melvin A. Park², Marcela Nouzova³, Fernando G. Noriega^4,5, Francisco Fernandez-Lima^1,6

¹Deparment of Chemistry and Biochemistry,Florida International University, ²Bruker Daltonics Inc., ³Institute of Parasitology,Biology Centre CAS, ⁴Department of Biological Sciences,Florida International University, ⁵Department of Parasitology,University of South Bohemia, ⁶Biomolecular Sciences Institute,Florida International University

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Overview

This research presents a method for screening lipid structures through stable isotope labeling, enhancing quantification in lipidemic samples. The study addresses the gap in standardization of LC-TIMS-TOF MS/MS in lipid investigations.

Key Study Components

Area of Science

Neuroscience
Biochemistry
Mass Spectrometry

Background

Lipidemic samples vary significantly across species.
Standardization in lipid analysis is currently lacking.
LC-TIMS-TOF MS/MS is a key technique for lipid analysis.
Understanding lipid panels can aid in diverse biological studies.

Purpose of Study

To implement specific quantification methods for lipids.
To track biomass remains in lipidemic investigations.
To explore future research in epigenetics and metabolomics.

Methods Used

Stable isotope labeling for lipid quantification.
LC-TIMS-TOF MS/MS calibration procedures.
Use of DDA and DIA methods in mass spectrometry.
Analysis of diverse samples from insects to humans.

Main Results

Developed a method for improved lipid structure screening.
Identified the need for standardization in lipid analysis.
Provided a framework for future research in related fields.
Demonstrated the application of stable isotope labeling.

Conclusions

The method enhances the understanding of lipid diversity.
Standardization is crucial for advancing lipidomic studies.
Future research will expand into epigenetics and metabolomics.

Frequently Asked Questions

What is stable isotope labeling?

Stable isotope labeling is a technique used to track and quantify specific molecules, such as lipids, in biological samples.

Why is standardization important in lipid analysis?

Standardization ensures consistency and reliability in results across different studies and laboratories.

What are LC-TIMS-TOF MS/MS methods?

LC-TIMS-TOF MS/MS refers to liquid chromatography coupled with trapped ion mobility spectrometry and time-of-flight mass spectrometry, used for detailed analysis of complex mixtures.

How does this research impact future studies?

This research lays the groundwork for more precise lipid analysis and opens avenues for exploring epigenetics and metabolomics.

What types of samples were analyzed in this study?

The study analyzed a range of samples from insects to humans to demonstrate the method's applicability.

Aquí se presenta un método para el cribado de estructuras lipídicas mediante el marcaje de isótopos estables mediante el uso de su tiempo de retención, movilidad y fragmentación.

Esta investigación pretende implementar una cuantificación más específica en muestras lipidómicas utilizando el marcaje de isótopos estables. Esto nos permite entender los paneles de lípidos y muestras muy diversas, desde insectos hasta humanos. Actualmente existe un vacío en este campo con respecto a la estandarización de LC, TIMS, Top, MS/MS en investigaciones lipidómicas.

A continuación, proporcionamos un método para el seguimiento de los restos de biomasa para este fin. En el futuro, nuestra investigación implicará la investigación de la epigenética y la metabolómica presentes en el proceso biológico utilizando el personal del equipo de LC, MS/MS, involucrando métodos DDA y DIA.

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