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Mouse PPARa Reporter Assay Kit

SIZE SKU PRICE
1 x-96 well format assays
3 x-32 assays in-96 well format
SIZE SKU
1 x-96 well format assays
3 x-32 assays in-96 well format

Product Description and Product Data

This is an all-inclusive cell-based luciferase reporter assay kit targeting the Mouse Peroxisome Proliferator-Activated Receptor Alpha. INDIGO’s mPPAR alpha reporter assay utilizes proprietary mammalian cells that have been engineered to provide constitutive expression of the mPPAR alpha. In addition to mPPAR alpha Reporter Cells, this kit provides two optimized media for use during cell culture and in diluting the user’s test samples, a reference agonist, Luciferase Detection Reagent, and a cell culture-ready assay plate. The principal application of this assay is in the screening of test samples to quantify any functional activity, either agonist or antagonist, that they may exert against mPPAR alpha.This kit provides researchers with clear, reproducible results, exceptional cell viability post-thaw, and consistent results lot to lot. Kits must be stored at -80C. Do not store in liquid nitrogen. Note: reporter cells cannot be refrozen or maintained in extended culture.

Features

  • Clear, Reproducible Results

  • All-Inclusive Assay Systems
  • Exceptional Cell Viability Post-Thaw
  • Consistent Results Lot to Lot

Product Specifications

Target TypeNuclear Hormone Receptor, Nuclear Receptor Orthologs
SpeciesMouse
Receptor FormHybrid
Assay ModeAgonist, Antagonist
Kit Components
  • Mouse PPARa Reporter Cells
  • Cell Recovery Medium (CRM)
  • Compound Screening Medium (CSM)
  • GW7647, (ref. agonist; in DMSO)
  • Detection Substrate
  • Detection Buffer
  • White, sterile, cell-culture ready assay plate
Shelf Life6 months
Shipping RequirementsDry Ice
Storage temperature-80C

Data

Dose-response of the mouse PPARa Assay using reference agonist GW590735. Dose-response analyses of mPPARa Reporter Cells were performed according to the protocol provided in this Technical Manual. In addition, to assess the level of background signal contributed by non-specific factors that may cause activation of the luciferase reporter gene, “mock” reporter cells were prepared to contain only the luciferase vector (mock reporter cells are not provided with assay kits). mPPARa Reporter Cells and mock reporter cells were identically treated with GW590735 (Cayman Chemical) using an assay concentration range generated in 3-fold decrements: 3000, 1000, 333, 111, 37.0, 12.3, 4.12 and 0 nM. Luminescence was quantified using a GloMax-Multi+ luminometer (Promega). Average relative light units (RLU) and corresponding standard deviation (SD) values were determined for each treatment concentration (n ≥ 6). Signal-to-background (S/B) and Z’ values were calculated as described by Zhang, et al. (1999). Non-linear regression and EC50 analyses were performed using GraphPad Prism software. RESULTS: mPPARa reporter cells treated with 1000 nM GW590735 yielded an S/B = 118 and a corresponding Z’= 0.84. Similarly treated mock reporter cells demonstrate no significant background luminescence. Thus, luminescence results strictly through ligand-activation of the mouse PPARa expressed in these reporter cells. These data confirm the robust performance of this mPPARa Assay.

Target Background

INDIGO’s Mouse Peroxisome Proliferator-Activated Receptor Alpha (mPPARα) Reporter Assay System utilizes proprietary mammalian cells engineered to provide constitutive, high-level expression of Mouse PPARα (nr1c1), a ligand-dependent transcription factor. Because these cells incorporate a responsive luciferase reporter gene, quantifying expressed luciferase activity provides a sensitive surrogate measure of mPPARα activity in treated cells.

The primary application of this reporter assay system is in the screening of test samples to quantify functional activity, either agonist or antagonist, that they may exert against mouse PPARα.

Citations

Multiple factors in addition to over consumption lead to obesity and non-alcoholic fatty liver disease (NAFLD) in the United States and worldwide. CYP2B6 is the only human detoxification CYP whose loss is associated with obesity, and Cyp2b-null mice show greater diet-induced obesity with increased steatosis than wildtype mice. However, a putative mechanism has not been determined. LC-MS/MS revealed that CYP2B6 metabolizes PUFAs, with a preference for metabolism of ALA to 9-HOTrE and to a lesser extent 13-HOTrE with a preference for metabolism of PUFAs at the 9- and 13-positions. To further study the role of CYP2B6 in vivo, humanized-CYP2B6-transgenic (hCYP2B6-Tg) and Cyp2b-null mice were fed a 60% high-fat diet for 16 weeks. Compared to Cyp2b-null mice, hCYP2B6-Tg mice showed reduced weight gain and metabolic disease as measured by glucose tolerance tests, however hCYP2B6-Tg male mice showed increased liver triglycerides. Serum and liver oxylipin metabolite concentrations increased in male hCYP2B6-Tg mice, while only serum oxylipins increased in female hCYP2B6-Tg mice with the greatest increases in LA oxylipins metabolized at the 9 and 13-positions. Several of these oxylipins, specifically 9-HODE, 9-HOTrE, and 13-oxoODE, are PPAR agonists. RNA-seq data also demonstrated sexually dimorphic changes in gene expression related to nuclear receptor signaling, especially CAR > PPAR with qPCR suggesting PPARγ signaling is more likely than PPARα signaling in male mice. Overall, our data indicates that CYP2B6 is an anti-obesity enzyme, but probably to a lesser extent than murine Cyp2b’s. Therefore, the inhibition of CYP2B6 by xenobiotics or dietary fats can exacerbate obesity and metabolic disease potentially through disrupted PUFA metabolism and the production of key lipid metabolites.
2022-12-15

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Peroxisome Proliferator-Activated Receptor Alpha (PPARa, NR1C1)

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