PMID- 15860251 OWN - NLM STAT- MEDLINE DCOM- 20050707 LR - 20220224 IS - 0960-0760 (Print) IS - 0960-0760 (Linking) VI - 93 IP - 2-5 DP - 2005 Feb TI - Multiple expression control mechanisms of peroxisome proliferator-activated receptors and their target genes. PG - 99-105 AB - The peroxisome proliferator-activated receptors (PPAR) alpha, beta/delta and gamma belong to the nuclear hormone receptor superfamily. As ligand-activated receptors, they form a functional transcriptional unit upon heterodimerization with retinoid X receptors (RXRs). PPARs are activated by fatty acids and their derivatives, whereas RXR is activated by 9-cis retinoic acid. This heterodimer binds to peroxisome proliferator response elements (PPRE) residing in target genes and stimulates their expression. Recent reports now indicate that PPARs and RXRs can function independently, in the absence of a hetero-partner, to modulate gene expression. Of importance, these non-canonical mechanisms underscore the impact of both cofactors and DNA on gene expression. Furthermore, these different mechanisms reveal the increasing repertoire of PPAR 'target' genes that now encompasses non-PPREs containing genes. It is also becoming apparent that understanding the regulation of PPAR expression and activity, can itself have a significant influence on how the expression of subgroups of target genes is studied and integrated in current knowledge. FAU - Tan, Nguan Soon AU - Tan NS AD - Center for Integrative Genomics, NCCR Frontiers in Genetics, University of Lausanne, Biology Building, CH-1015 Lausanne, Switzerland. FAU - Michalik, Liliane AU - Michalik L FAU - Desvergne, Beatrice AU - Desvergne B FAU - Wahli, Walter AU - Wahli W LA - eng PT - Journal Article PT - Review PL - England TA - J Steroid Biochem Mol Biol JT - The Journal of steroid biochemistry and molecular biology JID - 9015483 RN - 0 (Hormones) RN - 0 (Peroxisome Proliferator-Activated Receptors) RN - 0 (Receptors, Cytoplasmic and Nuclear) RN - 0 (Retinoid X Receptors) RN - 0 (TGFB1 protein, human) RN - 0 (Transforming Growth Factor beta) RN - 0 (Transforming Growth Factor beta1) RN - 0 (Tumor Necrosis Factor-alpha) SB - IM MH - Animals MH - *Gene Expression Regulation MH - Hormones/metabolism MH - Humans MH - Models, Biological MH - Peroxisome Proliferator-Activated Receptors/genetics/*physiology MH - Receptors, Cytoplasmic and Nuclear/metabolism MH - Retinoid X Receptors/genetics/physiology MH - Transforming Growth Factor beta/physiology MH - Transforming Growth Factor beta1 MH - Tumor Necrosis Factor-alpha/physiology MH - Wound Healing/genetics/physiology RF - 52 EDAT- 2005/04/30 09:00 MHDA- 2005/07/08 09:00 CRDT- 2005/04/30 09:00 PHST- 2005/04/30 09:00 [pubmed] PHST- 2005/07/08 09:00 [medline] PHST- 2005/04/30 09:00 [entrez] AID - S0960-0760(04)00425-X [pii] AID - 10.1016/j.jsbmb.2004.12.025 [doi] PST - ppublish SO - J Steroid Biochem Mol Biol. 2005 Feb;93(2-5):99-105. doi: 10.1016/j.jsbmb.2004.12.025.