Project description:The PPAR (Peroxisome proliferator-activated receptor) family of nuclear receptors has three members: PPARg, PPARa and PPARd. Although they share similar structures, their biological functions are distinct. PPARg controls lipid storage and adipogenesis, while PPARd is associated with fat burning. The highly specific synthetic ligand for PPARd, GW501516, is a promising drug candidate for obesity and diabetes. Here we use Affymetrix microarray to analyze gene expression profile in mouse embryo fibroblasts treated with 100 nM GW501516 for 0, 2, 8 and 24 hours. These data may provide new clues into the molecular mechanism by which GW501516 ameliorates obesity and diabetes.
Project description:The PPAR (Peroxisome proliferator-activated receptor) family of nuclear receptors has three members: PPARg, PPARa and PPARd. Although they share similar structures, their biological functions are distinct. PPARg controls lipid storage and adipogenesis, while PPARd is associated with fat burning. The highly specific synthetic ligand for PPARd, GW501516, is a promising drug candidate for obesity and diabetes. Here we use Affymetrix microarray to analyze gene expression profile in mouse embryo fibroblasts treated with 100 nM GW501516 for 0, 2, 8 and 24 hours. These data may provide new clues into the molecular mechanism by which GW501516 ameliorates obesity and diabetes. Wild type mouse embryonic fibroblasts (MEFs) stably infected with retroviruses MSCVpuro expressing PPARd were plated at 0.5 million per 10 cm dish. After overnight incubation, cells were treated with 100nM GW501516 for 0h, 2h, 8h and 48h. Cells were collected at subconfluent condition. Total RNAs were sequentially purified with Trizol (Invitrogen) and RNeasy kit (Qiagen) and analyzed in triplicate on Mouse Genome 430 2.0 Array (Affymetrix) at NIDDK Microarray Core Facility following standard protocols.
Project description:In this study, we uncover the molecular mechanism that PPARD transactive-deficient pigs have large-eared feature. Evidently from this work, PPARD plays a vital role on inhibiting cartilage growth by regulating the transcription of critical genes for chondrogenesis in ligand dependent manner; the activation of sPPARD speeds up apoptosis in CSPCs, terminal differentiation of chondroblasts and matrix degradation in auricular cartilage. The transactive-deficient PPARD has not the capability to slow down cartilage growth and consequently causes that ear size of carried animals increases at a high growth rate. As the role of PPARD in cartilage is similar in pigs, mice and humans, and since cartilage development is well-conserved in animals, our data helps to better understanding of cartilage development and treatment of cartilage-related diseases.
Project description:The role of murine peroxisome proliferator-activated receptor-delta (PPARd) in mammary tumorigenesis was assessed. Microarrays were used to analyse global gene expression to determine changes in MMTV-PPARd transgenic mice versus wild-type mice and the effect of GW501516.
Project description:Purpose: The goals of this study are to investigate the differentially expressed miRNAs between ALV-J-infected primary monocyte-derived macrophages (MDM) and uninfected control by Illumina deep sequencing. Methods:Total RNA from two ALV-J-infected MDM (designated: J3h_1, J3h_2, J36h_1 and J36h_2) and two uninfected MDM samples (designated: NC3h_1, NC3h_2, NC36h_1 and NC36h_2) was isolated by TRIzol following the manufacturer’s instruction at 3 h post infection (hpi) and 36 hpi. RNA samples of two individuals within each group were pooled with equal amounts, and then were subjected to Illumina deep sequencing by Illumina Hiseq 2000. Results: compared to the uninfected MDM, we identified 13 significant up-regulated miRNAs and 2 significant down-regulated miRNAs in ALV-J infected MDM at 3 hpi, and 6 significant up-regulated miRNAs and 2 significant down-regulated miRNAs in ALV-J infected MDM at 36 hpi. Conclusions: Our results suggest that DE miRNAs involved in the immune response induced by ALV-J infection in MDM at 3 hpi. In addition, only 25 miRNAs-target DEGs were identified in MDM with ALV-J infection at 36 hpi, and these target DEGs can’t be significantly enriched in any GO terms and KEGG pathway..
Project description:Human MDM were exposed to VSVG-pseudotyped HIV-1 NL-AD8 for 8h, 24h, and with HIV-1 + AZT for 24h MDM from 3 healthy blood donors were differentiated for 7 days, exposed or not to HIV-1 +/- AZT for 8h and 24h before being lysed. RNA was extracted, reverse-transcribed, hybridized on 2.1 ST microarrays to analyse the early transcriptomic response of MDM to infection.
Project description:In this study, we uncover the molecular mechanism that PPARD transactive-deficient pigs have large-eared feature. Evidently from this work, PPARD plays a vital role on inhibiting cartilage growth by regulating the transcription of critical genes for chondrogenesis in ligand dependent manner; the activation of sPPARD speeds up apoptosis in CSPCs, terminal differentiation of chondroblasts and matrix degradation in auricular cartilage. The transactive-deficient PPARD has not the capability to slow down cartilage growth and consequently causes that ear size of carried animals increases at a high growth rate. As the role of PPARD in cartilage is similar in pigs, mice and humans, and since cartilage development is well-conserved in animals, our data helps to better understanding of cartilage development and treatment of cartilage-related diseases.
Project description:The role of murine peroxisome proliferator-activated receptor-delta (PPARd) in mammary tumorigenesis was assessed. Microarrays were used to analyse global gene expression to determine changes in MMTV-PPARd transgenic mice versus wild-type mice and the effect of GW501516. RNA was isolated (RNeasy Mini Kit, Qiagen) from mammary gland tissue of transgenic and wild-type mice maintained on normal rodent chow or 0.005% GW501516