Related Experiment Video
Updated: Apr 26, 2026
09:20
An Adipocyte Cell Culture Model to Study the Impact of Protein and Micro-RNA Modulation on Adipocyte Function
Published on: May 4, 2021
3.4K
Perilipin 3 modulates specific lipogenic pathways in SZ95 sebocytes
Emanuela Camera1, Maik Dahlhoff, Matteo Ludovici
1Laboratory of Cutaneous Physiopathology and Integrated Center of Metabolomics Research, San Gallicano Dermatologic Institute, IRCCS, Rome, Italy.
Experimental Dermatology
|July 22, 2014
Summary
Perilipin-3 (PLIN3) is crucial for lipid accumulation in sebaceous gland cells. Downregulating PLIN3 impairs linoleic acid metabolism and triglyceride synthesis, impacting sebaceous lipogenesis.
Area of Science:
- Cell Biology
- Biochemistry
- Dermatology
Background:
- Lipid droplets (LDs) are vital organelles for cellular lipid management.
- Perilipin proteins (PLIN1-PLIN5) are key LD-associated proteins.
- The role of PLIN3 in sebocytes remains poorly understood.
Discussion:
- Downregulating PLIN3 in SZ95 sebocytes using siRNA significantly reduced lipid accumulation.
- PLIN3 plays a role in the metabolism of linoleic acid, a key component in triglyceride synthesis.
- Altered expression of lipogenic enzymes was observed in PLIN3-deficient sebocytes.
Key Insights:
- PLIN3 is essential for linoleic acid-induced lipid accumulation in sebaceous gland cells.
- PLIN3 is involved in the metabolism of acyl lipids, including triglycerides.
- PLIN3's function is closely linked to sebaceous lipogenesis pathways like desaturation and triglyceride synthesis.
Outlook:
- Further research into PLIN3's precise mechanisms in sebaceous lipogenesis is warranted.
- Understanding PLIN3's role could offer new therapeutic targets for sebaceous gland-related disorders.
- Investigating PLIN3 interactions with other lipogenic enzymes may reveal novel regulatory networks.
Related Concept Videos
01:42Phosphoinositides and PIPs
7.6K
Phosphoinositides are a group of phospholipids containing a glycerol backbone with two fatty acid chains and a phosphate attached to a myoinositol sugar ring. The inositol head group extends into the cytoplasm, where it is modified by adding phosphate groups to form phosphatidylinositol phosphates or PIPs.
Different phosphoinositides are synthesized and recruited on the cytosolic face of the plasma membrane. The localization of specific phosphoinositides concentrated in separate membrane...
Different phosphoinositides are synthesized and recruited on the cytosolic face of the plasma membrane. The localization of specific phosphoinositides concentrated in separate membrane...
7.6K
01:11IP3/DAG Signaling Pathway
12.4K
Membrane lipids such as phosphatidylinositol (PI) are precursors for several membrane-bound and soluble second messengers. Specific kinases phosphorylate PI and produce phosphorylated inositol phospholipids. One such inositol phospholipids are the phosphatidylinositol-4,5 bisphosphate [PI(4,5)P2], present in the inner half of the lipid bilayer. Upon ligand binding, GPCR stimulates Gq proteins to turn on phospholipase Cꞵ. Activated phospholipase Cꞵ cleaves PI(4,5)P2 and...
12.4K
01:25Lipid Catabolism
1.4K
Triglycerides serve as crucial long-term energy storage molecules in microorganisms, providing a dense source of metabolic energy. Their breakdown is mediated by lipases, which hydrolyze triglycerides into glycerol and free fatty acids. Each of these components follows distinct metabolic pathways, ultimately contributing to ATP synthesis and cellular energy homeostasis.Glycerol MetabolismGlycerol, released from triglyceride hydrolysis, is phosphorylated by glycerol kinase to form...
1.4K
01:28Assembly of the Lipid Bilayer in the ER
3.2K
Biological membranes are more than just a barrier separating cell cytoplasm from the outside environment. They are highly dynamic and help maintain the integrity and physiological stability of the cells as well as membrane-bound organelles. Membranes also play vital roles in cell-to-cell and intracellular communication.
A large chunk of any biological membrane is composed of phospholipids. These lipids have a heterogeneous distribution across different subcellular organelles and even between...
A large chunk of any biological membrane is composed of phospholipids. These lipids have a heterogeneous distribution across different subcellular organelles and even between...
3.2K
01:29Biosynthesis of Lipids
955
Microbial membranes exhibit remarkable diversity in lipid composition, reflecting evolutionary adaptations to various environmental conditions. The three domains of life—Bacteria, Archaea, and Eukarya—synthesize membrane lipids through distinct biosynthetic pathways, leading to fundamental structural differences that impact membrane stability, function, and adaptability.Fatty Acid-Based Lipids in Bacteria and EukaryaBacteria and eukaryotes share a common fatty acid biosynthesis...
955
01:24Overview of Lipid Metabolism
6.9K
Lipid metabolism is a crucial process in the human body that involves the synthesis and degradation of lipids. This process is essential for energy production, cell membrane formation, and hormone production, among other functions.
Lipolysis: The Breakdown of Lipids:
Lipolysis is the process of breaking down lipids, particularly triglycerides, into glycerol and fatty acids. This process typically occurs in the adipose tissue and is triggered by various hormones, including glucagon and...
Lipolysis: The Breakdown of Lipids:
Lipolysis is the process of breaking down lipids, particularly triglycerides, into glycerol and fatty acids. This process typically occurs in the adipose tissue and is triggered by various hormones, including glucagon and...
6.9K