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Related Experiment Video

Updated: Jun 28, 2026

Lipid Droplet Isolation for Quantitative Mass Spectrometry Analysis

Lipid Droplet Isolation for Quantitative Mass Spectrometry Analysis

Published on: April 17, 2017

Lipid microdomains in cell nucleus.

Giacomo Cascianelli¹, Maristella Villani, Marcello Tosti

¹Department of Clinical and Experimental Medicine, Physiopathology Section, University School of Medicine, University of Perugia, Policlinico Monteluce, 06100 Perugia, Italy.

Molecular Biology of the Cell

|October 17, 2008

Summary

This summary is machine-generated.

This study reveals nuclear microdomains with specific lipid compositions, similar to previously known nuclear lipid-protein complexes. These microdomains change during cell proliferation, suggesting a role in nuclear functions.

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Last Updated: Jun 28, 2026

Lipid Droplet Isolation for Quantitative Mass Spectrometry Analysis

Lipid Droplet Isolation for Quantitative Mass Spectrometry Analysis

Published on: April 17, 2017

Isolation of Cellular Lipid Droplets: Two Purification Techniques Starting from Yeast Cells and Human Placentas

Isolation of Cellular Lipid Droplets: Two Purification Techniques Starting from Yeast Cells and Human Placentas

Published on: April 1, 2014

Area of Science:

Cell Biology
Molecular Biology
Biochemistry

Background:

Nuclear lipids are crucial for cell proliferation, differentiation, and apoptosis.
Specific nuclear lipids like phosphatidylcholine and sphingomyelin form complexes with proteins and cholesterol.
The organization of these nuclear lipid-protein complexes and their function remain largely unknown.

Purpose of the Study:

To investigate if nuclear lipid-protein interactions form nuclear membrane microdomains.
To characterize the composition of these potential nuclear microdomains.
To evaluate the functional role of these nuclear microdomains in cellular processes.

Main Methods:

Characterization of nuclear microdomains.
Analysis of lipid composition within nuclear microdomains.
Correlation of microdomain composition with cell proliferation and RNA synthesis.

Main Results:

Demonstrated the existence of nuclear microdomains with a distinct lipid composition.
Observed changes in nuclear microdomain lipid composition correlating with increased cell proliferation and newly synthesized RNA.
Established a similarity between nuclear microdomains and previously described intranuclear lipid-protein complexes.

Conclusions:

Nuclear microdomains represent a novel structural and functional entity within the nucleus.
The dynamic lipid composition of nuclear microdomains suggests their involvement in regulating nuclear functions.
These findings provide new insights into the organization and role of nuclear lipids in cellular processes like transcription.