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Molecular and immune response characterizations of a novel Bax inhibitor-1 gene in pufferfish, Takifugu obscurus

文献类型: 外文期刊

作者: Cheng, Chang-Hong 1 ; Luo, Sheng-Wei 2 ; Wang, An-Li 2 ; Guo, Zhi-Xun 1 ;

作者机构: 1.Chinese Acad Fishery Sci, South China Sea Fisheries Res Inst, Minist Agr, Key Lab South China Sea Fishery Resources Exploit, Guangzhou 510300, Guangdong, Peoples R China

2.South China Normal Univ, Sch Life Sci, Guangdong Prov Key Lab Hlth & Safe Aquaculture, Key Lab Ecol & Environm Sci Guangdong,Higher Educ, Guangzhou 510631, Guangdong, Peoples R China

3.South China Sea Bioresource Exploitat & Utilizat, Guangzhou, Guangdong, Peoples R China

关键词: Takifugu obscurus;Bi-1;Gene expression;Immune responses;Apoptosis

期刊名称:FISH PHYSIOLOGY AND BIOCHEMISTRY ( 影响因子:2.794; 五年影响因子:2.876 )

ISSN:

年卷期:

页码:

收录情况: SCI

摘要: Apoptosis plays a crucial role in many biological processes, including development, cellular homeostasis, and immune responses. Bax inhibitor-1 (BI-1) is an anti-apoptotic protein that protects cells from endoplasmic reticulum stress-induced apoptosis. In this study, a BI-1 gene from the pufferfish Takifugu obscurus (Pf-BI-1) was identified and characterized. The full length of Pf-BI-1 cDNA was 1387 bp, including a 5'-UTR of 82 bp, a 3'-UTR of 591 bp containing a poly-(A) tail, and an open reading frame (ORF) of 714 bp that encodes a polypeptide of 237 amino acids. Pf-BI-1 was ubiquitously expressed in various tissues, with the highest expression levels in the blood, brain, and gill. The expression of Pf-BI-1 was up-regulated in a time-dependent manner after heat shock stress, ammonia stress, and bacterial challenge. Intracellular localization revealed that Pf-BI-1 was primarily localized in the cell cytoplasm. Furthermore, over-expression of Pf-BI-1 could active NF-kappa B reporter genes in HeLa cells. These results indicated that Pf-BI-1 may be involved in the apoptosis and immunity process against ambient stressors in pufferfish.

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