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| Status |
Public on Aug 03, 2023 |
| Title |
CPT1B regulates goat intramuscular preadipocyte lipid deposition through p38MAPK signaling pathway |
| Organism |
Capra hircus |
| Experiment type |
Expression profiling by high throughput sequencing
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| Summary |
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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| Overall design |
Differentially expressed genes were detected by RNA-seq sequencing in goat intramuscular adipocytes from knockdown CPT1B (si-CPT1B) and negative control (NC).
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| Contributor(s) |
Wang Y, Zhu J, Huang L |
| Citation missing |
Has this study been published? Please login to update or notify GEO. |
| BioProject |
PRJNA978364 |
| Submission date |
Jul 28, 2023 |
| Last update date |
Aug 03, 2023 |
| Contact name |
Yinggui Wang |
| E-mail(s) |
YingguiWang326@outlook.com
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| Phone |
18788705310
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| Organization name |
Qinghai-Tibetan Plateau Animal Genetic Resource Reservation and Utilization Key Laboratory of Sichuan Province
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| Lab |
2-31
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| Street address |
2-31, Jingwenyuan, South District, Airport Campus, Southwest University for Nationalities, Chengdu, Sichuan
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| City |
chengdu |
| State/province |
sichuan |
| ZIP/Postal code |
610000 |
| Country |
China |
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| Platforms (1) |
| GPL21299 |
Illumina NextSeq 500 (Capra hircus) |
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| Samples (8)
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| Supplementary file |
Size |
Download |
File type/resource |
| GSE239570_cpt1bFPKM.csv.gz |
595.0 Kb |
(ftp)(http) |
CSV |
| GSE239570_cpt1bcount.csv.gz |
147.4 Kb |
(ftp)(http) |
CSV |
SRA Run Selector |
| Raw data are available in SRA |
| Processed data are available on Series record |
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