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[Nuclear receptor(s) regulating peroxisome genes].
1Université de Bourgogne, LBMC, Laboratoire de Biologie Molécularie et Cellulaire Faculté des Sciences, Mirande, Dijon.
Comptes Rendus Des Seances De La Societe De Biologie Et De Ses Filiales
|January 1, 1992
Summary
Peroxisome proliferator-activated receptors (PPARs) control the expression of genes involved in fatty acid metabolism. This discovery sheds light on how peroxisome proliferators influence liver cancer development.
Area of Science:
- Cell Biology
- Molecular Biology
- Biochemistry
Context:
- Peroxisomes are vital organelles with diverse metabolic roles, including fatty acid metabolism and the synthesis of essential molecules.
- Peroxisome proliferators, compounds that increase peroxisome numbers, are known to promote liver cancer in rodents.
- The discovery of peroxisome proliferator-activated nuclear receptors (PPARs) has provided a molecular link between these compounds and cellular responses.
Purpose:
- To review recent breakthroughs in understanding the role of peroxisomes and PPARs.
- To elucidate the mechanism by which PPARs regulate peroxisomal gene expression.
Summary:
- Peroxisomes play crucial metabolic roles and respond to peroxisome proliferators, which can induce hepatocarcinogenesis.
- Peroxisome proliferator-activated nuclear receptors (PPARs), a class of nuclear receptors, have been identified.
- PPARs (e.g., mouse PPAR, Xenopus PPARs alpha, beta, and upsilon) activate the rat peroxisomal acyl CoA oxidase gene by binding to specific DNA sequences, thereby controlling peroxisomal beta-oxidation.
Impact:
- This research deepens our understanding of the molecular mechanisms underlying peroxisome function and proliferation.
- The findings are crucial for comprehending the link between peroxisome proliferators and hepatocarcinogenesis.
- Identifies PPARs as key regulators of peroxisomal beta-oxidation, offering potential targets for therapeutic interventions.