Effect of overexpress of lncFABP4 on gene expression during adipogenic differentiation of buffalo intramuscular adipocytes
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ABSTRACT:
ORGANISM(S): Bubalus bubalis
PROVIDER: GSE234915 | GEO | 2024/06/14
REPOSITORIES: GEO
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Project description:RNA sequencing was performed to obtain a landscape of mRNA, circRNA, lncRNA, and miRNA of bovine intramuscular adipocytes in 4 differentiation periods.
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Project description:Adipocytes are dynamic cells that have critical functions to maintain body energy homeostasis. Function of adipocyte is affected by adipogenic differentiation, and exogenous stimulation of biochemical factors such as serotonin and TNF-. Serotonin (5-hydroxytriptamine, 5-HT) is a biogenic monoamine, which known to be involved in lipid metabolism in adipocytes. The TNF- is a proinflammatory cytokines involved in adipocyte biology. Here we investigated the global transcriptome alterations of porcine intramuscular adipocytes at undifferentiated preadipocyte, differentiated adipocytes state, and adipocytes after stimulation with serotonin and TNF- for 12 h by using Agilent’s Porcine (V2) one-color Gene Expression Microarray 4 × 44. Transcriptome analysis revealed that the expression of 443, 261, and 249 genes were altered after differentiation, and after serotonin and TNF- stimulation, respectively. Differentiation process of adipocytes are found to be involved with expression changes of APP, HNF4A, ESR1, EGR1, SRC, HNF1A, FN1, ALB, STAT3, CBL, CEBPB, AR, FOS, CFTR, PAN2, PTPN6, VDR, PPARG, STAT5A and NCOA3 genes which are enriched in the ‘PPAR signaling pathway’ and ‘insulin resistance pathway’. Dose-dependent serotonin stimulation resulted in a decreased fat accumulation in the adipocytes as well as decreased adipocyte proliferation. Serotonin-induced differentially expressed genes in adipocytes were participated in the significant enrichment of GPCR ligand-binding, Cell chemotaxis, blood coagulation and complement pathways, metabolism of lipid and lipoproteins, regulation of lipid metabolism by PPARA; and lipid digestion, mobilization and transport pathways. TNF-α-induced transcriptional modification follows the similar trend, and alteration of many genes shared between both serotonin- and TNF-α stimulations. Our results provide new insights of transcriptome modifications associated with adipogenesis, and exogenous stimulation of serotonin- and TNF- to the porcine intramuscular adipocytes.
2020-02-27 | GSE141695 | GEO
Project description:Aged skeletal muscle is markedly affected by fatty muscle infiltration and strategies to reduce the occurrence of adipocytes within skeletal muscle, the intramuscular adipose tissue (IMAT), are urgently needed. Fibroblast growth factor-2 (FGF-2) is a critical growth factor for muscle tissue. Here, we show that FGF-2 not only stimulates muscle growth, but also promotes intramuscular adipogenesis. Using multiple screening assays for upstream and downstream signaling of microRNA (miR)-29a we located the secreted protein and adipogenic inhibitor SPARC to an FGF-2 signaling pathway that is conserved between skeletal muscle cells from mice and humans and that is activated in skeletal muscle from aged mice. FGF-2 induces the miR-29a/SPARC axis through transcriptional activation of FRA-1 which binds and activates an evolutionary conserved AP-1 site element proximal in the miR-29a promoter. Genetic deletions in muscle cells and AAV-mediated overexpression of FGF-2 or SPARC in mouse skeletal muscle revealed that this axis regulates differentiation of fibro/adipogenic progenitors in vitro and intramuscular fat formation in vivo. Thus, our data highlight an ambivalent role of FGF-2 for adult skeletal muscle and reveal a novel pathway to combat fat accumulation in aged skeletal muscle.
2021-08-23 | PXD020575 | Pride
Project description:To find the differentially and highly expressed circRNAs between the early and late stages of intramuscular adipocytes differentiation. Explored their expression profiles and further predicted their possible interaction relationships. To generated the final circRNA-miRNA interaction network that have valuable functions in adipocyte differentiation.
2023-01-30 | GSE215297 | GEO
Project description:The meat quality of animal products is closely related to the intramuscular fat content. Aquaglyceroporin (AQP) defines a class of water/glycerol channels that primarily facilitate the passive transport of glycerol and water across biological membranes. In this study, the AQP3 protein of the AQP family was mainly studied in the adipogenic function of intramuscular adipocytes in pigs. Here, we found that AQP3 was increased at both mRNA and protein levels upon adipogenic stimuli in porcine intramuscular adipocytes in vitro. Western blot results showed knockdown of AQP3 by siRNA significantly suppressed the expression of adipogenic genes (PPARγ, aP2, etc.), repressed Akt phosphorylation, as well as reducing lipid accumulation. Furthermore, deletion of AQP3 by siRNA significantly downregulated expression of cell cycle genes (cyclin D, E), and decreased the number of EdU-positive cells as well as cell viability. Collectively, our data indicate that AQP3 is of great importance in both adipogenic differentiation and proliferation in intramuscular adipocytes, providing a potential target for modulating fat infiltration in skeletal muscles.
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Project description:Background: Intramuscular fat (IMF) content is an important index for beef quality. However, the genetics of IMF deposition is complex and still largely unclear, especially in buffalo. To identify miRNAs with potential regulatory role in lipid accumulated in muscle, we performed small RNA sequencing and identified miRNAs expressed in the longissimus dorsi muscle and back fat of Chinese buffalo, which provided vital information for further identification of miRNAs with potential regulatory role in the lipid accumulated in muscle. Results: Three small RNA libraries were constructed. A total of 32762032 raw reads were obtained from adipose groups, respectively. After filtering the adaptor and low quality reads, 32054381 clean reads were retained. In total, 623 miRNAs were identified.
2021-12-31 | GSE171146 | GEO
Project description:Background: Intramuscular fat (IMF) content is an important index for beef quality. However, the genetics of IMF deposition is complex and still largely unclear, especially in buffalo. To identify miRNAs with potential regulatory role in lipid accumulated in muscle, we performed small RNA sequencing and identified miRNAs expressed in the longissimus dorsi muscle and back fat of Chinese buffalo, which provided vital information for further identification of miRNAs with potential regulatory role in the lipid accumulated in muscle. Results: Six small RNA libraries were constructed. A total of 66,128,645 and 70,974,347 raw reads were obtained from muscle and adipose groups, respectively. After filtering the adaptor and low quality reads, 60,765,257 and 67,327,095 clean reads were retained. In total, 721 miRNAs were identified.
2021-08-27 | GSE119064 | GEO
Project description:Background: Intramuscular fat (IMF) content is highly valued as it improves meat product quality by enhancing taste, juiciness, and tenderness. IMF content can be significantly different between breeds. Thought many lipid metabolism-related genes are stated to be associated with IMF deposition, the molecular mechanism of IMF deposition is still poorly understood. To date, no gene or mutation loci responsible for the difference of IMF content among cattle breeds has been identified. To identify transcripts with potential regulatory role in lipid accumulated in muscle tissue, RNA sequencing was performed to compare the mRNAs, lncRNAs, and circRNAs expression patterns in the longissimus dorsi muscle and back fat between Chinese buffalo and cattle. Results: A total of 12 cDNA libraries were constructed. A total of 925,441,106 and 512,507,068 raw reads were obtained from buffalo and cattle, respectively. After filtering the adaptor and low quality reads, 909,040,352 and 491,967,820 clean reads were retained. In total, 19,917 mRNAs, 43,975 lncRNAs, and 10,701 circRNAs were identified in buffalo and 19,383 mRNAs, 8,265 lncRNAs, and 18,535 circRNAs were identified in cattle.
2020-10-20 | GSE139102 | GEO
Project description:Purpose: In this study, RNA-Seq was performed on intramuscular adipocytes and subcutaneous adipocytes at 0, 2, 4, and 8 days of differentiation to find genes and miRNAs that regulate the differentiation of two types of adipocytes. Methods: High-throughput sequencing was performed with NovaSeq 6000, and 150 paired-end reads were generated.Clean reads were filtered using HISAT2. The StringTie was used to assemble the transcript and calculate fragments per kilobase million mapped reads (FPKM) value. Results: We found 30 genes that mainly regulate the differentiation of subcutaneous adipocytes and 22 genes that mainly regulate the differentiation of subcutaneous intramuscular adipocytes. A total of 17 important candidate differential miRNAs were found, of which 4 miRNAs are believed to play a regulatory role in both types of cells, and 10 and 3 act on lipid deposition in subcutaneous and intramuscular adipocytes, respectively.
2022-06-07 | GSE193607 | GEO
Project description:CPT1B, as the major rate-limiting enzyme for fatty acid β-oxidation, involved in the regulation of adipose tissue lipid deposition, but its role in the regulation of goat intramuscular fat (IMF) remains unclear. Here, we conducted knockdown experiments targeting the CPT1B gene in goat intramuscular preadipocytes, resulting in a significant increase in intracellular triglyceride (TAG) content and lipid droplet accumulation. Conversely, the overexpression of CPT1B led to a significant decrease in intracellular TAG content and lipid droplet accumulation. Mechanistically, through RNA-seq analysis of CPT1B knockdown samples, we identified 285 differentially expressed genes (DEGs), including 71 up-regulated and 214 down-regulated genes. Notably, these DEGs were significantly enriched in various KEGG signaling pathways, such as fatty acid metabolism, focal adhesion, FoxO signaling, PI3K-Akt signaling, and MAPK signaling pathways. Gene Set Enrichment Analysis (GSEA) further confirmed the upregulation of the MAPK signaling pathway upon CPT1B knockdown in adipocytes. In rescue experiments, we demonstrated that the addition of a p38MAPK inhibitor (PD169316) to CPT1B-knockdown adipocytes counteracted the increase in lipid deposition caused by the loss of CPT1B function. These findings suggest that CPT1B inhibits lipid deposition in goat intramuscular preadipocytes via the p38MAPK signaling pathway. In addition, we observed a potential interaction between CPT1B and CPT1A through Protein-Protein Interaction Networks (PPIs). Interestingly, CPT1A exhibited a similar regulatory function to CPT1B, and they both were able to partially restore the changes in lipid deposition induced by each other. This observation supports the hypothesis of synergistic effects between CPT1B and CPT1A. Collectively, our results elucidate the role of CPT1B in the regulation of lipid deposition in goat intramuscular adipocytes through the p38MAPK signaling pathway, providing valuable insights for enhancing the quality of goat intramuscular fat.
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