Conjugated linoleic acid (CLA) and Caco-2 cells
Ontology highlight
ABSTRACT:
ORGANISM(S): Homo sapiens
PROVIDER: GSE6518 | GEO | 2007/12/13
SECONDARY ACCESSION(S): PRJNA98789
REPOSITORIES: GEO
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Project description:The effect of CLA on gene expression in Caco-2 cells Experiment Overall Design: Caco-2 cells were treated with linoleic acid (LA; the parent and control fatty acid) trans-10, cis-12 CLA or cis-9, trans-11 CLA for 12 d.
2008-06-14 | E-GEOD-6518 | biostudies-arrayexpress
Project description:Trans-10, Cis-12 conjugated linoleic acid (t10c12 CLA) causes fat loss in mouse 3T3-L1 adipocyte tissue culture; however cis-9, trans-11 CLA does not (this series). The early transcriptome changes were analyzed using high-density microarrays to better characterize the signaling pathways responding to c9t11 CLA. Their gene expression responses between 8 to 12 hr after treatment showed no gene expression changes indicative of an integrated stress response (ISR). Keywords: control/treatment time course
2008-01-11 | GSE8684 | GEO
Project description:Trans-10, Cis-12 conjugated linoleic acid (t10c12 CLA) causes fat loss in mouse white adipose tissue (WAT) and 3T3-L1 adipocyte tissue culture; however in preadipocyte tissue (this series) the UPS/ISR and fat loss is not detected. The early transcriptome changes in 3T3-L1 preadipocyte tissue culture were analyzed using high-density microarrays to better characterize the signaling pathways responding to t10c12 CLA. Their gene expression responses between 4 to 12 hr after treatment do not show a set of genes indicative of an integrated stress response (ISR). Keywords: control/treatment time course
2008-01-11 | GSE8683 | GEO
Project description:LDLR-/- mice were fed a high fat high sucrose diet with either 9,11 CLA or 10,12 CLA. Control groups included no supplementation or caloric restriction to mirror weight loss seen in CLA group. Mice were sacrificed and blood was collected into EDTA tubes. Isolated plasma was immediately frozen at -80C. Adipose tissue from gonadal fat (epididymal white adipose tissue, EWAT) and subcutaneous fat (inguinal white adipose tissue, IWAT) and liver were harvested, snap frozen in liquid nitrogen, and immediately frozen at -80C. An aliquot of thawed plasma was prepared for this project and frozen in an eppendorf tube. Small pieces of frozen tissue were cut and weighed on dry ice and packaged in individual foil packets for this project. **Note: tissue weight is approximate**
2015-02-25 | ST000299 | MetabolomicsWorkbench
Project description:Trans-10, cis-12 conjugated linoleic acid (t10c12 CLA) causes dramatic reductions in white adipose tissue in mice but has had limited effectiveness in humans. Determination of the signaling pathways involved may lead to better regulation of adiposity. T10c12 CLA was found to activate AMP-activating protein kinase (AMPK), a central regulator of cell metabolism. Compound C, a potent inhibitor of AMPK, prevents many of the typical responses to treatments with t10c12 CLA including the integrated stress response (ISR), the inflammatory response, the reduction in key lipogenic transcription factors, and delipidation. Treatment of adipocytes or mice with t10c12 CLA in conjunction with AMPK activator metformin results in more delipidation than treatment with the individual chemicals. Additionally, the combination showed a reduced inflammatory response relative to a t10c12 CLA treatment alone. The combination of t10c12 CLA and metformin, widely used to treat insulin resistance and Type II diabetes, has potential as a treatment for reducing adiposity in humans. Keywords: control/treatment
2009-11-01 | GSE14888 | GEO
Project description:In the present study, a distinct transcriptome regulated by NO2-CLA was revealed in primary human coronary artery endothelial cells (HCAECs) through RNA sequencing. Differential gene expression and pathway enrichment analysis identified numerous regulatory networks of cell cycle regulation, inflammation and redox responses, nitric oxide biosynthesis, hypoxia and chaperones in response to NO2-CLA, suggesting potent and diverse effects of NO2-CLA on cellular processes.
2019-04-25 | GSE124522 | GEO
Project description:Trans-10, Cis-12 conjugated linoleic acid (t10c12 CLA) causes fat loss in mouse white adipose tissue (WAT) and 3T3-L1 adipocyte tissue culture; however in preadipocyte tissue (this series) the UPS/ISR and fat loss is not detected. The early transcriptome changes in 3T3-L1 preadipocyte tissue culture were analyzed using high-density microarrays to better characterize the signaling pathways responding to t10c12 CLA. Their gene expression responses between 4 to 12 hr after treatment do not show a set of genes indicative of an integrated stress response (ISR). Experiment Overall Design: Mouse 3T3-L1 RNA for each time point was isolated from two control (LA) and two treatment (CLA) samples for analysis on four microarrays.
2008-06-16 | E-GEOD-8683 | biostudies-arrayexpress
Project description:Trans-10, cis-12 conjugated linoleic acid (t10c12 CLA) causes dramatic reductions in white adipose tissue in mice but has had limited effectiveness in humans. Determination of the signaling pathways involved may lead to better regulation of adiposity. T10c12 CLA was found to activate AMP-activating protein kinase (AMPK), a central regulator of cell metabolism. Compound C, a potent inhibitor of AMPK, prevents many of the typical responses to treatments with t10c12 CLA including the integrated stress response (ISR), the inflammatory response, the reduction in key lipogenic transcription factors, and delipidation. Treatment of adipocytes or mice with t10c12 CLA in conjunction with AMPK activator metformin results in more delipidation than treatment with the individual chemicals. Additionally, the combination showed a reduced inflammatory response relative to a t10c12 CLA treatment alone. The combination of t10c12 CLA and metformin, widely used to treat insulin resistance and Type II diabetes, has potential as a treatment for reducing adiposity in humans. Keywords: control/treatment Mouse 3T3-L1 RNA for was isolated from control linoleic acid (LA) and treatment (CLA, CLA+metformin, metformin) samples for analysis on microarrays with three biological reps.
2009-11-01 | E-GEOD-14888 | biostudies-arrayexpress
Project description:Trans-10, Cis-12 conjugated linoleic acid (t10c12 CLA) causes fat loss in mouse 3T3-L1 adipocyte tissue culture; however cis-9, trans-11 CLA does not (this series). The early transcriptome changes were analyzed using high-density microarrays to better characterize the signaling pathways responding to c9t11 CLA. Their gene expression responses between 8 to 12 hr after treatment showed no gene expression changes indicative of an integrated stress response (ISR). Experiment Overall Design: Mouse 3T3-L1 RNA for each time point was isolated from control and treatment samples for analysis on microarrays; there are four biological reps for the controls for each timepoint, and only one rep for the treatment.
2008-06-16 | E-GEOD-8684 | biostudies-arrayexpress
Project description:Overexpression of fatty acid synthase (FAS) has been reported in both malignant and premalignant breast lesions, and has been associated with poor outcome. FAS has gained interest as a metabolic target for the treatment of breast cancer based on evidence that blockade with the antifungal antibiotic, cerulenin or synthetic inhibitor C75 inhibits proliferation of breast cancer cells and delays tumor development. Conjugated linoleic acid (CLA), a class of fatty acids found in beef and dairy products, has been shown to inhibit FAS in bovine mammary adipose. Based on previously well-documented anti-tumor activity of CLA, we hypothesized that one mechanism of CLA’s anti-tumorigenic activity may be metabolic blockade of FAS. We fed virgin PyV-MT transgenic mice a diet supplemented with either 1% CLA, as mixed isomers, or control chow for four weeks. Tissue histology was determined by H&E staining. cDNA microarray and real-time quantitative PCR were performed to determine relative expression of lipogenic genes. Western blots were used to examine relative protein expression of FAS. Differences in protein densitometry were analyzed using Students 2-sided T-test. Probability was determined using the binomial sign test. Level of significance for all tests was 0.05. H&E staining revealed a shift towards advanced mammary lesions in the CLA-fed mice compared to control animals (24/26 vs. 11/26) (p for trend < 0.001). Microarray analysis revealed a >2-fold decrease in FAS in the CLA-fed group compared to controls, and was confirmed by quantitative RT-PCR (p < 0.001) and Western blot. The decrease in FAS mRNA expression was unexpectedly associated with more advanced disease (p for trend < 0.01). Conclusions: Dietary CLA suppressed fatty acid synthase in the mammary glands of the PyV-MT mouse while promoting mammary tumor progression. Keywords: dietary intervention to compare mammary tumorigenesis between groups
2008-01-17 | GSE10193 | GEO