WNT7A and β-catenin localisations and roles in regulating periimplantation ovine conceptus development under natural estrous conditions have been elaborated.However,their locations and expression patterns have not be...WNT7A and β-catenin localisations and roles in regulating periimplantation ovine conceptus development under natural estrous conditions have been elaborated.However,their locations and expression patterns have not been reported under induction of oestrus.The localisation,expression and function of WNT7A and β-catenin in the uterine tissues of the early pregnant and non-pregnant sheep on days 10,12,14,16 and 18 following artificial induction of oestrus were investigated by means of in situ hybridisation,real-time RT-PCR,immuno-histochemistry and western blotting methods.WNT7A and β-catenin mRNA and protein were both restricted to the apical surfaces of the uterine luminal epithelium(LE)and glandular epithelium(GE).In pregnant sheep,protein localisation of WNT7A and β-catenin was observed both in the endometrial LE and GE.Their staining presented on day 10,increased between day 12 and day 16,and decreased on day 18.WNT7A and β-catenin mRNA and protein expression increased initially and then decreased from day 10 to day 18,peaking on day 16,and β-catenin reaching a peak on day 18 in the uterine tissues of pregnant sheep(p<0.05).By contrast,no significant changes in WNT7A and β-catenin mRNA and protein expression levels were observed from day 10 to day 18 of the oestrus cycle in the uterine tissues of non-pregnant sheep(p<0.05).Additionally,WNT7A and β-catenin mRNA and protein expression levels in the uterine tissues of the early pregnant sheep were significantly higher than those of non-pregnant sheep(p<0.05).Treatment of endometrial epithelial cells with WNT7A increased the mRNA expressions of β-catenin,c-myc and Cyclin Dl.These results provided an underlying mechanism of periimplantation ovine conceptus development under induction of oestrus.展开更多
目的:通过构建FoxO1表达和干扰慢病毒载体,建立细胞内FoxO1-KLF2-S1P1信号通路调控研究模型,观察FoxO1过表达、干扰表达在Jurkat细胞内对其下游分子表达及功能的影响。方法:构建FoxO1表达和干扰表达慢病毒载体,分别感染Jurkat细胞,采用...目的:通过构建FoxO1表达和干扰慢病毒载体,建立细胞内FoxO1-KLF2-S1P1信号通路调控研究模型,观察FoxO1过表达、干扰表达在Jurkat细胞内对其下游分子表达及功能的影响。方法:构建FoxO1表达和干扰表达慢病毒载体,分别感染Jurkat细胞,采用荧光定量PCR、Western blot和流式细胞术检测S1P1、CD62L、CCR7、CD69 mRNA水平和蛋白分子的表达。结果:FoxO1过表达组于感染后120 h FoxO1、KLF2、S1P1和CD62L mRNA水平显著增高(P<0.05),FoxO1、FoxO1-p和KLF2胞浆蛋白水平增高,S1P1^+细胞和CD62L^+细胞比率增高(P<0.05),CCR7^+细胞和CD69^+细胞未见显著改变(P>0.05)。FoxO1干扰组于转染后120 h FoxO1、KLF2、S1P1和CD62L mRNA水平降低(P<0.05),FoxO1、FoxO1-p和KLF2胞浆蛋白水平低于对照组,S1P1^+细胞百分比增多(P<0.05),但S1P1^+细胞和CD62L^+细胞在72 h时减少(P<0.05)。结论:FoxO1表达和干扰慢病毒载体转染Jurkat细胞并调节KLF2、S1P1和CD62L等分子的表达,为开展细胞内FoxO1-KLF2-S1P1信号通路调控和细胞相关功能的研究打下了基础。展开更多
Antenna is very crucial to radiotelemetry capsules which can measure the physiological parameters of the gastroin- testinal (GI) tract. The objective of this paper is to design a novel spiral slots microstrip patch an...Antenna is very crucial to radiotelemetry capsules which can measure the physiological parameters of the gastroin- testinal (GI) tract. The objective of this paper is to design a novel spiral slots microstrip patch antenna for the radiotelemetry capsules communicating with external recorder at 915 MHz located in ISM (Industry, Science, and Medical) bands. The microstrip patch antenna is designed and evaluated using the finite-difference time-domain (FDTD) method. Return loss characteristics and the effect of the human body on resonant frequency are analyzed, and the performances of radiation patterns at different positions of the human alimentary tract are also estimated. Finally, specific absorption rate (SAR) computations are performed, and the peak 1-g and 10-g SAR values are calculated. According to the peak SAR values, the maximum delivered power for the designed antenna was found so that the SAR values of the antenna satisfy the ANSI (American National Standards Institute) limitations.展开更多
基金Supported by the National Natural Science Foundation(31470118,31470118)。
文摘WNT7A and β-catenin localisations and roles in regulating periimplantation ovine conceptus development under natural estrous conditions have been elaborated.However,their locations and expression patterns have not been reported under induction of oestrus.The localisation,expression and function of WNT7A and β-catenin in the uterine tissues of the early pregnant and non-pregnant sheep on days 10,12,14,16 and 18 following artificial induction of oestrus were investigated by means of in situ hybridisation,real-time RT-PCR,immuno-histochemistry and western blotting methods.WNT7A and β-catenin mRNA and protein were both restricted to the apical surfaces of the uterine luminal epithelium(LE)and glandular epithelium(GE).In pregnant sheep,protein localisation of WNT7A and β-catenin was observed both in the endometrial LE and GE.Their staining presented on day 10,increased between day 12 and day 16,and decreased on day 18.WNT7A and β-catenin mRNA and protein expression increased initially and then decreased from day 10 to day 18,peaking on day 16,and β-catenin reaching a peak on day 18 in the uterine tissues of pregnant sheep(p<0.05).By contrast,no significant changes in WNT7A and β-catenin mRNA and protein expression levels were observed from day 10 to day 18 of the oestrus cycle in the uterine tissues of non-pregnant sheep(p<0.05).Additionally,WNT7A and β-catenin mRNA and protein expression levels in the uterine tissues of the early pregnant sheep were significantly higher than those of non-pregnant sheep(p<0.05).Treatment of endometrial epithelial cells with WNT7A increased the mRNA expressions of β-catenin,c-myc and Cyclin Dl.These results provided an underlying mechanism of periimplantation ovine conceptus development under induction of oestrus.
文摘目的:通过构建FoxO1表达和干扰慢病毒载体,建立细胞内FoxO1-KLF2-S1P1信号通路调控研究模型,观察FoxO1过表达、干扰表达在Jurkat细胞内对其下游分子表达及功能的影响。方法:构建FoxO1表达和干扰表达慢病毒载体,分别感染Jurkat细胞,采用荧光定量PCR、Western blot和流式细胞术检测S1P1、CD62L、CCR7、CD69 mRNA水平和蛋白分子的表达。结果:FoxO1过表达组于感染后120 h FoxO1、KLF2、S1P1和CD62L mRNA水平显著增高(P<0.05),FoxO1、FoxO1-p和KLF2胞浆蛋白水平增高,S1P1^+细胞和CD62L^+细胞比率增高(P<0.05),CCR7^+细胞和CD69^+细胞未见显著改变(P>0.05)。FoxO1干扰组于转染后120 h FoxO1、KLF2、S1P1和CD62L mRNA水平降低(P<0.05),FoxO1、FoxO1-p和KLF2胞浆蛋白水平低于对照组,S1P1^+细胞百分比增多(P<0.05),但S1P1^+细胞和CD62L^+细胞在72 h时减少(P<0.05)。结论:FoxO1表达和干扰慢病毒载体转染Jurkat细胞并调节KLF2、S1P1和CD62L等分子的表达,为开展细胞内FoxO1-KLF2-S1P1信号通路调控和细胞相关功能的研究打下了基础。
基金Project (No. 2006AA04Z368) supported by the Hi-Tech Researchand Development Program (863) of China
文摘Antenna is very crucial to radiotelemetry capsules which can measure the physiological parameters of the gastroin- testinal (GI) tract. The objective of this paper is to design a novel spiral slots microstrip patch antenna for the radiotelemetry capsules communicating with external recorder at 915 MHz located in ISM (Industry, Science, and Medical) bands. The microstrip patch antenna is designed and evaluated using the finite-difference time-domain (FDTD) method. Return loss characteristics and the effect of the human body on resonant frequency are analyzed, and the performances of radiation patterns at different positions of the human alimentary tract are also estimated. Finally, specific absorption rate (SAR) computations are performed, and the peak 1-g and 10-g SAR values are calculated. According to the peak SAR values, the maximum delivered power for the designed antenna was found so that the SAR values of the antenna satisfy the ANSI (American National Standards Institute) limitations.
