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Updated: May 24, 2025
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Cellular Lipid Extraction for Targeted Stable Isotope Dilution Liquid Chromatography-Mass Spectrometry Analysis
Published on: November 17, 2011
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Dynamic Lipidome Reorganization in Response to Heat Shock Stress
Luis Solano1, Uri Keshet2, Andrew Reinschmidt1
1Department of Biological Science, Center for Applied Biotechnology Studies, and Center for Computational and Applied Mathematics, California State University Fullerton, Fullerton, CA, USA.
Biorxiv : the Preprint Server for Biology
|March 3, 2025
Summary
The heat shock response involves significant lipid changes, including increased fatty acids and lipids, with partial recovery. Multi-omics analysis reveals complex regulation beyond gene expression for cellular adaptation.
Area of Science:
- Cell Biology
- Biochemistry
- Genomics
Background:
- The heat shock response (HSR) is crucial for cell survival under stress.
- While proteomic and transcriptomic aspects of HSR are known, lipid metabolism's role is unclear.
Purpose of the Study:
- To investigate global lipidomic and transcriptomic changes during heat shock and recovery.
- To explore the interplay between lipid remodeling and gene expression in HSR.
Main Methods:
- Integrated analysis of mass spectrometry-based lipidomics and RNA sequencing.
- Characterization of HeLa cells under control, heat shock, and recovery conditions.
Main Results:
- Heat shock induced significant lipid remodeling, increasing fatty acids, glycerophospholipids, and sphingolipids.
- Transcriptomic analysis revealed thousands of gene expression changes, with some linked to lipid metabolism.
- Lipidomic shifts were not fully explained by transcriptomic data, indicating complex regulation.
Conclusions:
- Lipid metabolism plays a critical role in the heat shock response.
- Multi-omics integration is essential for understanding stress adaptation mechanisms.
- Findings provide insights into lipid-mediated HSR and potential disease implications.
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