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Cai XY, Yu J, Yu HY, Liu YW, Fang Y, Ren ZX, Jia JQ, Zhang GZ, Guo XJ, Jin BR, Gui ZZ. Core promoter regulates the expression of cathepsin B gene in the fat body of Bombyx mori. Gene 2014; 542:232-9. [PMID: 24630970 DOI: 10.1016/j.gene.2014.03.012] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2014] [Accepted: 03/06/2014] [Indexed: 01/08/2023]
Abstract
Bombyx mori cathepsin B (BmCatB) is involved in the programmed cell death of the fat body during B. mori metamorphosis. For a better understanding of the functional regulatory mechanism, the promoter region of BmCatB in the transcriptional regulation has been identified and analyzed in the present study. BmCatB promoter region performed by the 5' truncation or mutagenesis of EcREs was inserted in the pFA3Luc-A3RL double fluorescence expression vector to activate the fireflies luciferase (FLuc) gene. The results indicated that the dual-luciferase activity of BmCatB gene in the silkworm larval fat body is regulated by the length of promoter. Site-directed mutagenesis of EcRE experiment has shown that the EcREs are up-regulated significantly in the regulation of the BmCatB promoter. A 142bp region (-1165 to -1023) and EcREs are the mainly fat-body tissue-specificity related region and could function as a core promoter element.
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Affiliation(s)
- Xiang-Yun Cai
- Jiangsu University of Science and Technology, Zhenjiang 212018, China
| | - Jie Yu
- Jiangsu University of Science and Technology, Zhenjiang 212018, China
| | - Hai-Yan Yu
- Jiangsu University of Science and Technology, Zhenjiang 212018, China
| | - Yan-Wei Liu
- Jiangsu University of Science and Technology, Zhenjiang 212018, China
| | - Yin Fang
- Jiangsu University of Science and Technology, Zhenjiang 212018, China
| | - Zi-Xu Ren
- Jiangsu University of Science and Technology, Zhenjiang 212018, China
| | - Jun-Qiang Jia
- Jiangsu University of Science and Technology, Zhenjiang 212018, China; Sericultural Research Institute, Chinese Academy of Agricultural Sciences, Zhenjiang 212018, China
| | - Guo-Zheng Zhang
- Jiangsu University of Science and Technology, Zhenjiang 212018, China; Sericultural Research Institute, Chinese Academy of Agricultural Sciences, Zhenjiang 212018, China
| | - Xi-Jie Guo
- Jiangsu University of Science and Technology, Zhenjiang 212018, China; Sericultural Research Institute, Chinese Academy of Agricultural Sciences, Zhenjiang 212018, China
| | - Byung-Rae Jin
- College of Natural Resources and Life Science, Dong-A University, Busan 604-714, Republic of Korea
| | - Zhong-Zheng Gui
- Jiangsu University of Science and Technology, Zhenjiang 212018, China; Sericultural Research Institute, Chinese Academy of Agricultural Sciences, Zhenjiang 212018, China.
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