Differentially Expressed lncRNAs Related to the Development of Abdominal Fat in Gushi Chickens and Their Interaction Regulatory Network

Abstract

Chickens are one of the most important sources of meat worldwide, and the growth status of abdominal fat is closely related to production efficiency. Long noncoding RNAs (lncRNAs) play an important role in lipid metabolism and deposition regulation. However, research on the expression profile of lncRNAs related to the development of abdominal fat in chickens after hatching and their interaction regulatory networks is still lacking. To characterize the lncRNA expression profile during the development of chicken abdominal fat, abdominal adipose tissues from 6-, 14-, 22-, and 30-week-old Chinese Gushi chickens were herein used to construct 12 cDNA libraries, and a total of 3,827 new lncRNAs and 5,466 previously annotated lncRNAs were revealed. At the same time, based on the comparative analysis of five combinations, 276 differentially expressed lncRNAs (DE-lncRNAs) were screened. Functional enrichment analysis showed that the predicted target genes of these DE-lncRNAs were significantly enriched in pathways related to the posttranscriptional regulation of gene expression, negative regulation of cell proliferation, cell adhesion and other biological processes, glycosphingolipid biosynthesis, PPAR signaling, fatty acid degradation, fatty acid synthesis and others. In addition, association analysis of the lncRNA transcriptome profile was performed, and DE-lncRNA-related lncRNA-mRNA, lncRNA-miRNA and lncRNA-miRNA-mRNA interaction regulatory networks were constructed. The results showed that DE-lncRNA formed a complex network with PPAR pathway components, including PPARD, ACOX1, ADIPOQ, CPT1A, FABP5, ASBG2, LPL, PLIN2 and related miRNAs, including mir-200b-3p, mir-130b-3p, mir-215-5p, mir-122-5p, mir-223 and mir-125b-5p, and played an important regulatory role in biological processes such as lipid metabolism, adipocyte proliferation and differentiation. This study described the dynamic expression profile of lncRNAs in the abdominal fat of Gushi chickens for the first time and constructed the DE-lncRNA interaction regulatory network. The results expand the number of known lncRNAs in chicken abdominal fat and provide valuable resources for further elucidating the posttranscriptional regulatory mechanism of chicken abdominal fat development or deposition.

Pharmacokinetics of Danofloxacin in Gushi Chickens after Single Oral and Intravenous Administration

“…Due to their distinct flavor and nutritional value, Gushi chickens have gained significant consumer appeal. Additionally, they are frequently utilized as breeding hybrids [ 2 ]. As the demand for Gushi chickens surpasses their availability, there is a pressing need to address the challenges associated with their production process.…”

Combined analysis of differentially expressed lncRNAs and miRNAs in liver tissues of high-fat fed rabbits by transcriptome sequencing

“…The molecular regulatory mechanism between them has been proved to play a variety of roles in many biological processes (Paraskevopoulou & Hatzigeorgiou, 2016;Yang et al, 2020;Dimitra et al, 2021). Some studies had found that the molecular regulation of miRNA and lncRNA changed during chicken obesity, and lncRNA-miRNA axis might be an important regulator of chicken abdominal fat expression (Li et al, 2015;Zhai et al, 2021). In this study, it was found that lncRNAs could target multiple miRNAs in the molecular regulatory network.…”

Assessment of selective breeding effects and selection signatures in Qingyuan partridge chicken and its strains

“…SNPs in the 5′ regulatory region of PPARD are strongly correlated with fat deposition traits in a local Chinese pig population ( Zhang et al, 2015 ). Some researchers have additionally proposed that PPARD interacts with lncRNA, playing a role in regulating lipid metabolism, adipocyte proliferation, and differentiation in the abdominal fat of Gushi Chickens ( Zhai et al, 2021 ). The selection signatures of QYM breed, including muscle development, fat metabolism, and reproductive performance, can be due to consumer demand for tender and flavorful yellow-feathered chicken meat.…”