Supplementary MaterialsAdditional document 1: Table S1. was confirmed by bioinformatics analysis, luciferase assay, RT-PCR and western blot in AML12 cells. Results HFD treatment markedly observed hepatic fatty degeneration with primarily fat vacuoles, and increased TG level compared with control. According to microarray data, we found that transfection of Gm12664C001 siRNA (siRNA-118,306) obviously enhanced TG accumulation and repressed CAV1 in AML12 cells. Furthermore, the TG accumulation markedly increased by siRNA-mediated knockdown of CAV1 in AML12 cells. By bioinformatics prediction, AML12 cells were transfected of siRNA-118,306 obviously upregulated miR-295-5p. Transfection of miR-295-5p mimics significantly increased TG accumulation and certainly suppressed the prospective CAV1. Conclusions The results revealed that lncRNA Gm12664C001 attenuated hepatic lipid accumulation through negatively regulating miR-295-5p and enhancing CAV1 expression in AML12 cells. mice with fatty liver . In addition, lncRNAs were described to compete for miRNA binding, thereby modulating the derepression of miRNA targets . Therefore, we hypothesized that there might also be certain lncRNA regulating PROTAC MDM2 Degrader-1 steatosis formation in NAFLD through negatively regulating miRNAs expression and directly targeting downstream molecules. In this study, we performed systematical analyses on hepatic expression profiles of lncRNAs and miRNAs in a high-fat diet (HFD)-induced steatotic animal model. We found out miR-295-5p expression was associated with negatively modulated by lncRNA Gm12664C001, the target gene of Gm12664C001, CAV1, was also the target of miR-295-5p. Then, we further investigated the mechanisms of lncRNA Gm12664C001 could regulate lipid droplets and triglyceride (TG) level in mice hepatocytes by negatively modulating miR-295-5p and directly recognizing and depressing Sirt7 the expression of CAV1, which contributes to the pathogenesis of steatosis formation in NAFLD and might provide a potential novel therapeutic target for the treatment of NAFLD. Methods Animals Eight-week-old male C57BL/6 mice (40 mice) were provided by the Vital River Laboratories (Beijing, China) for the experiments. All mice were acclimated for 1 week before initiation of the experiment and maintained on a 12/12?h light/dark cycle with free access to food and water. The animals were divided to the following two groups (20 mice per group) including normal control (NC) PROTAC MDM2 Degrader-1 group and high fat diet (HFD) group for 8 weeks, the composition of diets in Additional?file?1: Table S1. The liver was collected for microarray analysis after 8 weeks of feeding. Experimenters were blind to group assignment and outcome assessment. Animal studies complied with the guidelines of the Harbin Medical Universitys Regulations of Animal Experiments and were approved by the Animal Experiment Committee of the Harbin Medical University. Microarrays of miRNAs and lncRNAs The total RNA was extracted from total 6 mice (3 mice per group at 3 replicates) using the TRIzol reagent (Invitrogen, Carlsbad, CA) according to the manufacturers protocol. The IncRNAs PROTAC MDM2 Degrader-1 microarray analysis was performed by KangChen Bio-tech (Shanghai, China). Briefly, the RNA was labeled and hybridized to the Mouse LncRNA Array v2.0 (Arraystar, Rockville, USA), according to Quick Amp Labeling Kit and Gene Expression Hybridization Kit (Agilent Technology, Santa Clara, USA). After washing, the arrays were scanned by the Agilent Microarray Scanner. Agilent Feature Extraction software (version 188.8.131.52) was used to analyze the array images. Quantile normalization and raw data processing were performed using the GeneSpring GX v11.5.1 software package (Agilent Technologies). Cell culture, treatment and transfection Alpha mouse liver 12 (AML12) cells (ATCC, Manassas, VA, USA) were cultured as monolayers in Dulbeccos modified Eagles medium/F12 (GIBCO BRL) supplemented with 10% (v/v) fetal bovine serum (PAA Laboratories, Pasching, Austria). The medium contained HEPES (15?mmol/L), L-glutamine (2.4?mmol/L), pyridoxine hydrochloride (2.4?mmol/L), dexamethasone (40?ng/mL), NaHCO3 (1.2?g/L), penicillin (100?IU/mL) and streptomycin (100?g/mL), supplemented with ITS (containing 0.005?mg/mL insulin, 0.005?mg/mL transferrin and 5?ng/mL selenium). Cells were grown under an atmosphere of 5% (v/v) CO2 in air PROTAC MDM2 Degrader-1 at 37?C . Stearic acid and Palmitic acid (Sigma, St Louis, MO, USA) had been ready as previously referred to . Quickly, stearic acidity (SA) or palmitic acidity (PA) complicated with BSA (3?mM fatty acidity: 1.5?mM BSA) was dissolved in ethanol and saponified with sodium hydroxide. Following the sodium sodium was dried PROTAC MDM2 Degrader-1 out, the sodium sodium was re-suspended in saline warmed 80?C until it dissolved completely. When the perfect solution is was warm, 20% (w/v) BSA was added as well as the blend was stirred at 50?C for 4?h. After that, the complicated was sterilized by filtering for even more utilization. AML12 cells had been treated with 0, 50, 100, 200, 400 and 800?M PA or SA for 24?h. Meanwhile, AML12 cells were subjected to 300 also?M SA or 500?M PA for.