Related Experiment Video
Updated: Aug 8, 2026

08:26
Monitoring Stub1-Mediated Pexophagy
Published on: May 12, 2023
Peroxisome proliferator-activated receptors increase human sebum production
Nishit R Trivedi1, Zhaoyuan Cong, Amanda M Nelson
1The Jake Gittlen Cancer Research Institute, Hershey, Pennsylvania 17033, USA.
The Journal of Investigative Dermatology
|May 6, 2006
Summary
Peroxisome proliferator-activated receptors (PPARs) regulate sebum production. Modulating PPARs may offer new therapeutic targets for acne treatment, distinct from isotretinoin.
Area of Science:
- Dermatology
- Biochemistry
- Molecular Biology
Background:
- Acne pathophysiology involves sebum production; severe cases may require isotretinoin, a teratogen.
- Limited therapeutic options exist to reduce sebum beyond isotretinoin and hormonal therapy.
- Understanding sebum regulation is crucial for identifying novel acne treatment targets.
Purpose of the Study:
- To investigate the role of Peroxisome Proliferator-Activated Receptors (PPARs) in human skin and sebocytes.
- To assess the impact of PPAR ligands on sebum production in patients.
- To explore PPARs as potential therapeutic targets for acne.
Main Methods:
- Lipogenesis assays in SEB-1 sebocytes treated with PPAR ligands and isotretinoin.
- Analysis of PPAR expression and activity in human skin and SEB-1 sebocytes.
- Clinical observation of sebum production in patients treated with thiazolidinediones or fibrates.
Main Results:
- Isotretinoin significantly decreased lipogenesis in SEB-1 sebocytes.
- PPAR agonists (GW7647, GW0742, GW2433, rosiglitazone, GW4148) increased lipogenesis.
- Patients on thiazolidinediones or fibrates showed significant increases in sebum production (37% and 77%, respectively).
Conclusions:
- PPARs are involved in the regulation of sebum production.
- Selective modulation of PPAR activity presents a potential novel therapeutic strategy for acne.
- Targeting PPARs could offer an alternative to existing acne treatments.
Related Concept Videos
Accessory Structures of the Skin: Sebaceous Glands
A sebaceous gland is a type of oil gland found almost all over the skin ( except palms and soles) and helps lubricate and waterproof the skin and hair. Most sebaceous glands are associated with hair follicles. They generate and excrete sebum, a mixture of lipids, onto the skin surface, thereby naturally lubricating the dry and dead layer of keratinized cells of the stratum corneum, keeping it pliable.
These glands that produce the oils on the skin and hair are holocrine glands. The mature...
These glands that produce the oils on the skin and hair are holocrine glands. The mature...
Peroxisomes
Peroxisomes are specialized organelles present in fungi, plant, and animal cells. It can vary in number, size, morphology, and activity depending on the type of tissue and the nutritional state of the cell. For example, cells with active lipid metabolism, such as adipocytes, neurons, and hepatocytes, have more peroxisomes than other cells in the body. Besides their primary role in breaking down complex organic molecules, peroxisomes can also synthesize specific macromolecules and participate in...
Protein Import into the Peroxisomes
Cells contain membrane-bound organelles called peroxisomes that oxidize organic molecules by transferring hydrogen atoms to oxygen, producing hydrogen peroxide. Peroxisomes enzymatically convert the released hydrogen peroxide into water and oxygen.
Peroxisomal Protein Import:
Peroxisomes lack the genetic machinery required to code for their own proteins. Hence, most peroxisomal membrane, lumenal and transmembrane proteins are synthesized in the cytoplasm or ER and transported to the peroxisome...
Peroxisomal Protein Import:
Peroxisomes lack the genetic machinery required to code for their own proteins. Hence, most peroxisomal membrane, lumenal and transmembrane proteins are synthesized in the cytoplasm or ER and transported to the peroxisome...
Acne Infection
Acne is a multifactorial skin condition primarily affecting adolescents and young adults, with a global prevalence estimated to exceed 75% in this demographic. The condition is characterized by the formation of comedones (blackheads and whiteheads), papules, pustules, nodules, and, in severe cases, cysts, particularly in areas rich in sebaceous glands such as the face, neck, chest, and back. The pathogenesis involves increased sebum production, follicular hyperkeratinization, colonization by...
Overview of Lipid Metabolism
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...
Transducer Mechanism: Nuclear Receptors
Nuclear receptors, or NRs, are unique transcription factors that regulate gene transcription and affect the cellular pathways involved in reproduction, development, or metabolism. Their ability to be stimulated by small lipophilic ligands and control vital cellular processes makes them ideal drug targets. Nearly 10-15% of currently prescribed drugs target these receptors.
About 48 different soluble family members of nuclear receptors are identified that can be divided into two main classes:
About 48 different soluble family members of nuclear receptors are identified that can be divided into two main classes: