文献类型： 外文期刊
作者： Zhang, Dong-jie 1 ; Du, Fang-fang 2 ; Jing, Xiao-yan 2 ; Wang, Liang 1 ; Liu, Di 1 ; Yang, Xiu-qin 2 ;
作者机构： 1.Heilongjiang Acad Agr Sci, Inst Anim Husb, Harbin 150086, Peoples R China
2.Northeast Agr Univ, Coll Anim Sci & Technol, Harbin 150030, Peoples R China
关键词： Pig; Promoter; 5? UTR; uORF; Alternative splicing
期刊名称：GENE （ 影响因子：3.5； 五年影响因子：3.3 ）
ISSN： 0378-1119
年卷期： 2023 年 851 卷
页码：
收录情况： SCI
摘要： B cell lymphoma-2-like 2 (BCL2L2), an important regulator of apoptosis, plays vital roles in several physiological processes, as revealed by studies in humans and mice. However, reports on pig BCL2L2 are few, and the encoding gene has not been identified experimentally. This study was designed to clone the porcine BCL2L2 gene and its alternative splicing (AS) transcripts using molecular biological techniques and to analyze the regulatory mech-anisms underlying transcription and translation. The BCL2L2 cDNA (V1) was 807 bp in length and encoded a polypeptide of 193 aa containing four BCL-2 homology domains. A total of nine AS transcripts were obtained, among which V2 and V3 differed from V1 in the 5 ' untranslated region (UTR). The core promoter was mapped to a range of-1102 to-759 bp (the first nucleotide of the start codon was designated as +1). There were several functional cis-elements, including one SP1 and two C/EBP alpha binding sites at around-759 bp. AS in the 5 ' UTR is involved in the regulation of gene expression, as revealed by dual-luciferase reporter and western blot analysis, and the secondary structure of the 5 ' UTRs may be the reason for the differential expression of V1-3. At the same time, an upstream open reading frame (ORF) existed in each of the three 5 ' UTRs, was found to repress the expression of the main ORF. Additionally, the roles of porcine BCL2L2 in cell proliferation and apoptosis were preliminarily analyzed. The results will contribute to further characterizing the role of BCL2L2.
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