Objective To clarify the polo-like kinasel （PLK1） expression in human gastric cancer tissue and its clinicopathological significance in gastric carcinoma. Methods PLK1 expression in 60 cancer tissues and their corre...Objective To clarify the polo-like kinasel （PLK1） expression in human gastric cancer tissue and its clinicopathological significance in gastric carcinoma. Methods PLK1 expression in 60 cancer tissues and their corresponding noncancerous tissues from gastric cancer patients was measured by both real-time quantitative RT-PCR and western blot assay, lmmunohistochemistry was used to detect PLK1 protein expression in eighty-nine paraffin-embedded samples. Results The PLK1 mRNA and protein expression level in the 60 fresh cancer tissues was significantly higher than that in noncancerous tissues （ P 〈 0. 0001, P = 0. 031 respectively）. In paraffin-embedded samples, apart from its increased expression level, PLK1 was found to be in both cytoplasm and nucleus, double-site location only occurred in poor-differentiated cancer, PLKI expression intensity was associated with tumor dif- ferentiation （ P = 0. 03）, invasion （ P = 0. 032 ）, TNM stage （ P = 0. 019） , ki67 expression （ P = 0. 011 ）. The patients with negative PLK1 expression had better survival rate than that with positive PLK1 expression （ P =0. 0292 ）. Conclusion PLK1 may have clinicopathological value in tumor diagnosis, and may become another new biomarker and therapeutic target for gastric cancer.展开更多
目的探讨丝裂原活化蛋白激酶(mitogen-activated protein kinases,MAPKs)―细胞外信号调节激酶1和2(extracellular signal regulated kinase1/2,ERK1/2)信号转导通路在复方丹参注射液对人足月妊娠羊膜上皮细胞水通道蛋白3(aquaporin3,AQ...目的探讨丝裂原活化蛋白激酶(mitogen-activated protein kinases,MAPKs)―细胞外信号调节激酶1和2(extracellular signal regulated kinase1/2,ERK1/2)信号转导通路在复方丹参注射液对人足月妊娠羊膜上皮细胞水通道蛋白3(aquaporin3,AQP3)表达调节中的作用。方法原代培养足月妊娠羊水量正常与羊水过少人羊膜上皮细胞,将人羊膜上皮细胞均分为4组:分别为空白对照组、U0126组、复方丹参注射液组和U0126加复方丹参注射液组。采用免疫印迹技术检测人羊膜上皮细胞中磷酸化ERK1/2(p-ERK1/2)和AQP3的表达。结果 (1)在羊水量正常和羊水过少人羊膜上皮细胞中,均发现p-ERK1/2表达水平在U0126组较空白对照组明显下降(P<0.05),而复方丹参注射液组可以明显上调p-ERK1/2表达水平(P<0.05),U0126加复方丹参注射液组人羊膜上皮细胞中p-ERK1/2表达水平高于U0126组,但低于复方丹参注射液组(P<0.05)。(2)在羊水量正常的人羊膜上皮细胞中,U0126组AQP3的表达与空白对照组比较无明显变化(P>0.05);复方丹参注射液组和U0126加复方丹参注射液组AQP3的表达水平均高于空白对照组(P<0.05),但两组间比较差异无统计学意义(P>0.05)。(3)在羊水过少羊膜上皮细胞中,U0126组AQP3的表达较空白对照组下降(P<0.05);复方丹参注射液组可以明显上调AQP3的表达水平(P<0.05),而U0126加复方丹参注射液组AQP3的表达水平低于复方丹参注射液组(P<0.05),但高于U0126组(P<0.05)。结论羊水过少时,复方丹参注射液通过激活MAPK-ERK1/2信号转导通路来调节人羊膜上皮细胞中AQP3的表达水平。展开更多
文摘Objective To clarify the polo-like kinasel （PLK1） expression in human gastric cancer tissue and its clinicopathological significance in gastric carcinoma. Methods PLK1 expression in 60 cancer tissues and their corresponding noncancerous tissues from gastric cancer patients was measured by both real-time quantitative RT-PCR and western blot assay, lmmunohistochemistry was used to detect PLK1 protein expression in eighty-nine paraffin-embedded samples. Results The PLK1 mRNA and protein expression level in the 60 fresh cancer tissues was significantly higher than that in noncancerous tissues （ P 〈 0. 0001, P = 0. 031 respectively）. In paraffin-embedded samples, apart from its increased expression level, PLK1 was found to be in both cytoplasm and nucleus, double-site location only occurred in poor-differentiated cancer, PLKI expression intensity was associated with tumor dif- ferentiation （ P = 0. 03）, invasion （ P = 0. 032 ）, TNM stage （ P = 0. 019） , ki67 expression （ P = 0. 011 ）. The patients with negative PLK1 expression had better survival rate than that with positive PLK1 expression （ P =0. 0292 ）. Conclusion PLK1 may have clinicopathological value in tumor diagnosis, and may become another new biomarker and therapeutic target for gastric cancer.
文摘目的探讨丝裂原活化蛋白激酶(mitogen-activated protein kinases,MAPKs)―细胞外信号调节激酶1和2(extracellular signal regulated kinase1/2,ERK1/2)信号转导通路在复方丹参注射液对人足月妊娠羊膜上皮细胞水通道蛋白3(aquaporin3,AQP3)表达调节中的作用。方法原代培养足月妊娠羊水量正常与羊水过少人羊膜上皮细胞,将人羊膜上皮细胞均分为4组:分别为空白对照组、U0126组、复方丹参注射液组和U0126加复方丹参注射液组。采用免疫印迹技术检测人羊膜上皮细胞中磷酸化ERK1/2(p-ERK1/2)和AQP3的表达。结果 (1)在羊水量正常和羊水过少人羊膜上皮细胞中,均发现p-ERK1/2表达水平在U0126组较空白对照组明显下降(P<0.05),而复方丹参注射液组可以明显上调p-ERK1/2表达水平(P<0.05),U0126加复方丹参注射液组人羊膜上皮细胞中p-ERK1/2表达水平高于U0126组,但低于复方丹参注射液组(P<0.05)。(2)在羊水量正常的人羊膜上皮细胞中,U0126组AQP3的表达与空白对照组比较无明显变化(P>0.05);复方丹参注射液组和U0126加复方丹参注射液组AQP3的表达水平均高于空白对照组(P<0.05),但两组间比较差异无统计学意义(P>0.05)。(3)在羊水过少羊膜上皮细胞中,U0126组AQP3的表达较空白对照组下降(P<0.05);复方丹参注射液组可以明显上调AQP3的表达水平(P<0.05),而U0126加复方丹参注射液组AQP3的表达水平低于复方丹参注射液组(P<0.05),但高于U0126组(P<0.05)。结论羊水过少时,复方丹参注射液通过激活MAPK-ERK1/2信号转导通路来调节人羊膜上皮细胞中AQP3的表达水平。
