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Updated: May 11, 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 E 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 92831, USA.
International Journal of Molecular Sciences
|April 17, 2025
Summary
The heat shock response involves significant lipid changes, including increased fatty acids and lipids, with partial recovery. This study integrates lipidomics and transcriptomics to reveal complex regulation beyond gene expression.
Area of Science:
- Cellular Biology
- Biochemistry
- Stress Response
Background:
- The heat shock response (HSR) is vital 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 comprehensively analyze lipidomic and transcriptomic changes during heat shock and recovery.
- To investigate the interplay between transcriptional regulation and lipid remodeling in HSR.
Main Methods:
- Integrated analysis of mass spectrometry-based lipidomics and RNA sequencing in HeLa cells.
- Comparison of control, heat shock, and heat shock with recovery conditions.
Main Results:
- Heat shock caused extensive lipid remodeling, increasing fatty acids, glycerophospholipids, and sphingolipids.
- Transcriptomic analysis revealed significant gene expression changes, but did not fully explain lipid shifts.
- Joint pathway and network analyses identified key lipid metabolism pathways and regulators.
Conclusions:
- Lipid metabolism plays a crucial role in the heat shock response, with regulation beyond transcription.
- Multi-omics integration is essential for understanding stress adaptation mechanisms.
- Findings provide insights into lipid-mediated HSR relevant to cell survival and disease.
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