江苏科技大学学报(自然科学版)
江囌科技大學學報(自然科學版)
강소과기대학학보(자연과학판)
JOURNAL OF JIANGSU UNIVERSITY OF SCIENCE AND TECHNOLOGY(NATURAL SCIENCE EDITION)
2014年
3期
298-302
,共5页
沈兴家%王力刚%韦博尤%朱娟%唐顺明%赵巧玲
瀋興傢%王力剛%韋博尤%硃娟%唐順明%趙巧玲
침흥가%왕력강%위박우%주연%당순명%조교령
家蚕%滞育激素受体%海藻糖酶%基因表达调控
傢蠶%滯育激素受體%海藻糖酶%基因錶達調控
가잠%체육격소수체%해조당매%기인표체조공
Bombyx mori%diapause hormone receptor%trehalase%regulation of gene expression
家蚕滞育激素(Bombyx mori diapause hormone,BmDH)与滞育激素受体(BmDH receptor,BmDHR)结合,调控其信号通路中的下游基因的表达.在二化性家蚕中,受滞育信号的影响,蛹体卵巢膜上海藻糖酶的活性增强.为了证实 BmDHR对家蚕海藻糖酶基因(Bmtre)表达的调控作用,以 pcDNA3.1为载体,构建了4种由 ie -1启动子驱动的不同 Bmdhr 的表达质粒 pcDNA - ie1- Bmdhr1、pcDNA - ie1- Bmdhr3、pcDNA - ie1- Bmdhr4、pcDNA - ie1- Bmdhr5和(Bmtre 启动子驱动的萤火虫荧光素酶基因(luciferase,luc)报告质粒 p3Z - Bmtre - luc;用脂质体(Lipofectin)包埋1种 Bmdhr 表达质粒或不同摩尔比的 pcDNA - ie1- Bmdhr1/ pcDNA - ie1- Bmdhr5以及报告质粒后,分别共转染源于卵巢的家蚕细胞 BmN,在 DH 作用下体外检测 BmDHRs 对海藻糖酶基因启动子活性的影响.结果表明,4种滞育激素受体 BmDHR -1、BmDHR -3、BmDHR -4和BmDHR -5分别表达时,均能上调海藻糖酶基因启动子的活性;不同摩尔比(1:3,1:1,3:1)的 BmDHR -1/ BmDHR -5也均能上调海藻糖酶基因启动子的活性,由此证明 BmDHR 能上调其信号通路中下游基因 Bmtre 的表达.
傢蠶滯育激素(Bombyx mori diapause hormone,BmDH)與滯育激素受體(BmDH receptor,BmDHR)結閤,調控其信號通路中的下遊基因的錶達.在二化性傢蠶中,受滯育信號的影響,蛹體卵巢膜上海藻糖酶的活性增彊.為瞭證實 BmDHR對傢蠶海藻糖酶基因(Bmtre)錶達的調控作用,以 pcDNA3.1為載體,構建瞭4種由 ie -1啟動子驅動的不同 Bmdhr 的錶達質粒 pcDNA - ie1- Bmdhr1、pcDNA - ie1- Bmdhr3、pcDNA - ie1- Bmdhr4、pcDNA - ie1- Bmdhr5和(Bmtre 啟動子驅動的螢火蟲熒光素酶基因(luciferase,luc)報告質粒 p3Z - Bmtre - luc;用脂質體(Lipofectin)包埋1種 Bmdhr 錶達質粒或不同摩爾比的 pcDNA - ie1- Bmdhr1/ pcDNA - ie1- Bmdhr5以及報告質粒後,分彆共轉染源于卵巢的傢蠶細胞 BmN,在 DH 作用下體外檢測 BmDHRs 對海藻糖酶基因啟動子活性的影響.結果錶明,4種滯育激素受體 BmDHR -1、BmDHR -3、BmDHR -4和BmDHR -5分彆錶達時,均能上調海藻糖酶基因啟動子的活性;不同摩爾比(1:3,1:1,3:1)的 BmDHR -1/ BmDHR -5也均能上調海藻糖酶基因啟動子的活性,由此證明 BmDHR 能上調其信號通路中下遊基因 Bmtre 的錶達.
가잠체육격소(Bombyx mori diapause hormone,BmDH)여체육격소수체(BmDH receptor,BmDHR)결합,조공기신호통로중적하유기인적표체.재이화성가잠중,수체육신호적영향,용체란소막상해조당매적활성증강.위료증실 BmDHR대가잠해조당매기인(Bmtre)표체적조공작용,이 pcDNA3.1위재체,구건료4충유 ie -1계동자구동적불동 Bmdhr 적표체질립 pcDNA - ie1- Bmdhr1、pcDNA - ie1- Bmdhr3、pcDNA - ie1- Bmdhr4、pcDNA - ie1- Bmdhr5화(Bmtre 계동자구동적형화충형광소매기인(luciferase,luc)보고질립 p3Z - Bmtre - luc;용지질체(Lipofectin)포매1충 Bmdhr 표체질립혹불동마이비적 pcDNA - ie1- Bmdhr1/ pcDNA - ie1- Bmdhr5이급보고질립후,분별공전염원우란소적가잠세포 BmN,재 DH 작용하체외검측 BmDHRs 대해조당매기인계동자활성적영향.결과표명,4충체육격소수체 BmDHR -1、BmDHR -3、BmDHR -4화BmDHR -5분별표체시,균능상조해조당매기인계동자적활성;불동마이비(1:3,1:1,3:1)적 BmDHR -1/ BmDHR -5야균능상조해조당매기인계동자적활성,유차증명 BmDHR 능상조기신호통로중하유기인 Bmtre 적표체.
Bombyx mori diapause hormone(DH)bonds with diapause hormone receptors(BmDHR)to regulate downstream genes at its signal passway. In the pupal stage of bivoltine silkworm B. mori,the enzyme activity of trehalase is enhanced by diapause signal on the membrane of ovaries. To validate the regulation function of Bm-DHR on Bombyx mori trehalase gene(Bmtre),we constructed 4 different BmDHR expression plasmids driven by ie - 1 promoter by using pcDNA3. 1 vector,pcDNA - ie1 - Bmdhr1,pcDNA - ie1 - Bmdhr3,pcDNA - ie1 -Bmdhr4 and pcDNA - ie1 - Bmdhr5,and a report plasmid p3Z - Bmtre - luc with a luciferase gene driven by Bmtre promoter. Then BmN cells delivered from the ovary of B. mori were co - transfected respectively with above one BmDHR expression plasmid or different Mole ratio of BmDHR - 1 / BmDHR - 5,and reported plasmid medi-ated by lipofectin. The effects of BmDHR on the Bmtre promoter activity were detected respectively. The results showed that BmDHR - 1,BmDHR - 3,BmDHR - 4 and BmDHR - 5 increased the activity of Bmtre promoter independently. Different ratios of BmDHR - 1 / BmDHR - 5(1: 3,1: 1 and 3: 1)also increased Bmtre promoter activity. These results indicate that BmDHRs can up-regulate the expression of downstream gene Bmtre at its sig-nal passway.