ArticleScientific reports2022
Identification and characterization of alternative splicing variants of buffalo LXRα expressed in mammary gland.
Article in Scientific reports, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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1 citing paper in PubMed, 3 citations in OpenAlex.
- The Experimental and In Silico-Based Evaluation of NRF2 Modulators, Sulforaphane and Brusatol, on the Transcriptome of Immortalized Bovine Mammary Alveolar Cells.International journal of molecular sciences · 2024Article
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6 authors at 1 institution in 1 country.
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Abstract
Liver X receptor α (LXRα) is a ligand-dependent transcription factor and plays an important role in the regulation of cholesterol homeostasis, fatty acid biosynthesis and glucose metabolism. In this study, transcripts of LXRα gene were cloned and characterized from buffalo mammary gland, and three alternative splicing transcripts of buffalo LXRα gene were identified, named LXRα1, LXRα2 and LXRα3. The structure of the LXRα transcripts of buffalo and cattle was highly similar. Bioinformatics analysis showed that LXRα1 contains two complete functional domains of LXRα, one is the DNA-binding domain (NR_DBD_LXR) and the other is the ligand-binding domain (NR_LBD_LXR). The reading frame of LXRα2 is altered due to the skipping of exon 9, which truncates its encoding protein prematurely at the 400th amino acid residue, making it contain a complete DNA-binding domain and part of a ligand-binding domain. Due to the deletion of exon 4, the protein encoded by LXRα3 lacks 89 amino acid residues and contains only a complete ligand-binding domain, which makes it lose its transcriptional regulation function. In addition, motifs and conserved domains of three LXRα variants of buffalo were highly consistent with those of corresponding transcripts from other mammal species. Subcellular localization analysis showed that LXRα1 plays a functional role in the nucleus of buffalo mammary epithelial cells, while LXRα2 and LXRα3 are distributed in the nucleus and cytoplasm. Compared with non-lactating period, the mRNA abundance of the three LXRα transcripts in the mammary gland tissue of buffalo increased during lactating period, revealing that they play a key role in the synthesis of buffalo milk fat. Among the three LXRα transcripts, LXRα1 has the highest expression in the mammary gland, indicating that it is the major transcript in the mammary gland and has important regulatory functions, while LXRα2 and LXRα3 may have regulatory effects on the function of LXRα1. This study highlights the key role of LXRα alternative splicing in the post-transcriptional regulation of buffalo lactation.
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