AIM: To investigate the effect of integrin-linked kinase (ILK) on proliferation, metastasis, and invasion of the colorectal cancer cell line SW480.METHODS: In this study, the colorectal cancer cell line SW480 was stab...AIM: To investigate the effect of integrin-linked kinase (ILK) on proliferation, metastasis, and invasion of the colorectal cancer cell line SW480.METHODS: In this study, the colorectal cancer cell line SW480 was stably transfected with ILK plasmids, and small interfering RNA (siRNA) was used to knockdown expression of nuclear factor (NF)-κB/p65. Methylthiazole tetrazolium (MTT) assay was performed to measure proliferation, and the wound healing migration assay and matrigel invasion assay were used to test the metastasis and invasion ability of SW480 cells. To explore the epithelial-mesenchymal transition (EMT) process, embryonic development, and the invasion and metastasis of tumors, the protein level of E-cadherin, vimentin, snail, and slug was detected by western blot. Immunofluorescence was also used to detect E-cadherin expression. Western blot was used to determine the level of phosphorylated-inhibitor of kappa B (IκB)a, inhibitor of gamma B (IγB)a, and nuclear factor kappa B (NF-κB) expressions and to explore the ILK signaling pathway.RESULTS: Western blot results revealed that ILK expression significantly increased when ILK was overexpressed in SW480 cells (P < 0.05). Proliferation, metastasis, and invasion ability were improved in the vector-ILK group compared to the vector group (P < 0.05). Immunofluorescence results revealed that E-cadherin fluorescence intensity decreased after ILK was overexpressed (P < 0.05). Western blot results revealed that the protein expression of E-cadherin was reduced, while vimentin, snail, and slug were upregulated when ILK was overexpressed in SW480 cells (P < 0.05). In order to determine the role of the NF-κB signaling pathway in ILK overexpression promoted EMT occurrence, we overexpressed ILK in SW480 cells and found that levels of NF-κB/p65 and cytoplasmic phosphorylated-IκBa were increased and that cytoplasmic IкBa levels were decreased compared to the control group (P < 0.05). Furthermore, NF-κB/p65 knockout revealed that E-cadherin was increased in the overexpressed ILK group.CONCLUSION: ILK overexpression improved the proliferation, metastasis, and invasion ability of SW480 cells, and this effect may be mediated by the NF-κB signaling pathway.展开更多
AIM： To investigate the effects of integrin-linked kinase （ILK） on gastric cancer cells both in vitro and in vivo. METHODS： ILK small interfering RNA （siRNA） was transfected into human gastric cancer BGC-823 cel...AIM： To investigate the effects of integrin-linked kinase （ILK） on gastric cancer cells both in vitro and in vivo. METHODS： ILK small interfering RNA （siRNA） was transfected into human gastric cancer BGC-823 cells and ILK expression was monitored by real-time quan- titative polymerase chain reaction, Western blotting analysis and immunocytochemistry. Cell attachment, proliferation, invasion, microfilament dynamics and the secretion of vascular endothelial growth factor （VEGF） were also measured. Gastric cancer cells treated with ILK siRNA were subcutaneously transplanted into nude mice and tumor growth was assessed. RESULTS： Both ILK mRNA and protein levels were significantly down-regulated by ILK siRNA in human gastric cancer cells. This significantly inhibited cell attachment, proliferation and invasion. The knockdown of ILK also disturbed F-actin assembly and reduced VEGF secretion in conditioned medium by 40% （P 〈 0.05）. Four weeks after injection of ILK siRNA-transfected gastric cancer cells into nude mice, tumor volume and weight were significantly reduced compared with that of tumors induced by cells treated with non-silencing siRNA or by untreated cells （P 〈 0.05）. CONCLUSION： Targeting ILK with siRNA suppresses the growth of gastric cancer cells both in v/tro and /n vivo. ILK plays an important role in gastric cancer progression.展开更多
Background Integrin-linked kinase （ILK） dysregulation is involved in the progression of diabetic nephropathy （DN）. The aim of this study was to investigate the effects of angiotensin II receptor blocker （ARB）, i...Background Integrin-linked kinase （ILK） dysregulation is involved in the progression of diabetic nephropathy （DN）. The aim of this study was to investigate the effects of angiotensin II receptor blocker （ARB）, irbesartan, on ILK expression and podocyte injury in DN.展开更多
目的:观察虫草多糖对单侧输尿管梗阻(UUO)小鼠肾小管上皮-间充质转化(EMT)的影响。方法:建立小鼠UUO模型,虫草多糖干预7 d。观察模型及治疗组在第7天时肾间质纤维化程度及肾小管α-平滑肌肌动蛋白(α-SMA)、肾小管上皮表型标记物(E-cadh...目的:观察虫草多糖对单侧输尿管梗阻(UUO)小鼠肾小管上皮-间充质转化(EMT)的影响。方法:建立小鼠UUO模型,虫草多糖干预7 d。观察模型及治疗组在第7天时肾间质纤维化程度及肾小管α-平滑肌肌动蛋白(α-SMA)、肾小管上皮表型标记物(E-cadherin)、整合素连接激酶(integrin-linked protein kinase,ILK)的表达分布。结果:治疗组的肾间质纤维化程度明显改善,同时α-SMA、ILK蛋白的表达显著低于对照组(P<0.01)。而E-cadherin的表达显著高于对照组(P<0.01)。结论:虫草多糖可显著减轻E-cadherin的丢失和α-SMA的表达,并明显抑制ILK的表达,提示其可能通过下调ILK,抑制EMT,从而减轻肾小管间质纤维化。展开更多
基金Supported by the National Natural Science Foundation of China(Beijing,China,grant No’s.30770971,81172470,81070362 and 81372629)
文摘AIM: To investigate the effect of integrin-linked kinase (ILK) on proliferation, metastasis, and invasion of the colorectal cancer cell line SW480.METHODS: In this study, the colorectal cancer cell line SW480 was stably transfected with ILK plasmids, and small interfering RNA (siRNA) was used to knockdown expression of nuclear factor (NF)-κB/p65. Methylthiazole tetrazolium (MTT) assay was performed to measure proliferation, and the wound healing migration assay and matrigel invasion assay were used to test the metastasis and invasion ability of SW480 cells. To explore the epithelial-mesenchymal transition (EMT) process, embryonic development, and the invasion and metastasis of tumors, the protein level of E-cadherin, vimentin, snail, and slug was detected by western blot. Immunofluorescence was also used to detect E-cadherin expression. Western blot was used to determine the level of phosphorylated-inhibitor of kappa B (IκB)a, inhibitor of gamma B (IγB)a, and nuclear factor kappa B (NF-κB) expressions and to explore the ILK signaling pathway.RESULTS: Western blot results revealed that ILK expression significantly increased when ILK was overexpressed in SW480 cells (P < 0.05). Proliferation, metastasis, and invasion ability were improved in the vector-ILK group compared to the vector group (P < 0.05). Immunofluorescence results revealed that E-cadherin fluorescence intensity decreased after ILK was overexpressed (P < 0.05). Western blot results revealed that the protein expression of E-cadherin was reduced, while vimentin, snail, and slug were upregulated when ILK was overexpressed in SW480 cells (P < 0.05). In order to determine the role of the NF-κB signaling pathway in ILK overexpression promoted EMT occurrence, we overexpressed ILK in SW480 cells and found that levels of NF-κB/p65 and cytoplasmic phosphorylated-IκBa were increased and that cytoplasmic IкBa levels were decreased compared to the control group (P < 0.05). Furthermore, NF-κB/p65 knockout revealed that E-cadherin was increased in the overexpressed ILK group.CONCLUSION: ILK overexpression improved the proliferation, metastasis, and invasion ability of SW480 cells, and this effect may be mediated by the NF-κB signaling pathway.
基金Supported by The grants from the Department of Anesthesiology and Intensive Care of Changhai Hospital,Shanghai,China
文摘AIM： To investigate the effects of integrin-linked kinase （ILK） on gastric cancer cells both in vitro and in vivo. METHODS： ILK small interfering RNA （siRNA） was transfected into human gastric cancer BGC-823 cells and ILK expression was monitored by real-time quan- titative polymerase chain reaction, Western blotting analysis and immunocytochemistry. Cell attachment, proliferation, invasion, microfilament dynamics and the secretion of vascular endothelial growth factor （VEGF） were also measured. Gastric cancer cells treated with ILK siRNA were subcutaneously transplanted into nude mice and tumor growth was assessed. RESULTS： Both ILK mRNA and protein levels were significantly down-regulated by ILK siRNA in human gastric cancer cells. This significantly inhibited cell attachment, proliferation and invasion. The knockdown of ILK also disturbed F-actin assembly and reduced VEGF secretion in conditioned medium by 40% （P 〈 0.05）. Four weeks after injection of ILK siRNA-transfected gastric cancer cells into nude mice, tumor volume and weight were significantly reduced compared with that of tumors induced by cells treated with non-silencing siRNA or by untreated cells （P 〈 0.05）. CONCLUSION： Targeting ILK with siRNA suppresses the growth of gastric cancer cells both in v/tro and /n vivo. ILK plays an important role in gastric cancer progression.
基金This study was supported by a grant from the National Natural Science Foundation of China （No. 30870953） to Prof. LIU Bi-cheng as PI.
文摘Background Integrin-linked kinase （ILK） dysregulation is involved in the progression of diabetic nephropathy （DN）. The aim of this study was to investigate the effects of angiotensin II receptor blocker （ARB）, irbesartan, on ILK expression and podocyte injury in DN.
文摘目的探讨肺岩宁方对整合素连接激酶(integrin-linked kinase.ILK)mRNA及蛋白表达的影响。方法建立C57小鼠Lewis肺癌模型。将C57BL-6纯系10周龄雄性小鼠随机分为正常组、模型组、顺铂(DDP)组、肺岩宁方组,每组10只。正常组正常饲养;模型组以0.9%NaCl溶液0.4ml灌胃;顺铂组在造模后第5天开始给药,在开始给药的第1、3、5天,DDP溶液1ml(含DDP0.1mg)腹腔注射,0.9%NaCl溶液0.4ml灌胃;肺岩宁方组在造模后第5天开始给予肺岩宁方药液0.4ml(生药含量36.1g/kg)灌胃。采用Real time PCR和Western blot方法分别检测ILK在移植瘤组织和转移灶发生的肺组织中mRNA、蛋白水平的表达。结果与正常组比较,模型组肿瘤肺转移率、转移灶及Ilk基因表达差异均有统计学意义(P<0.01),说明模型成功。与模型组比较,肺岩宁方组可以显著降低肺转移灶的发生的作用(P<0.01)。各组移植肿瘤组织中,肺岩宁方组ILK基因表达与模型组比较显著降低(P<0.01);各组肺组织中,与模型组比较,肺岩宁方组ILK基因表达显著下降(P<0.01),而化疗组ILK基因表达反而升高(P<0.01)。与模型组比较,肺岩宁方组ILK蛋白的表达明显降低(P<0.01)。结论肺岩宁具有显著降低ILK基因表达的作用,调控Snail信号途径的关键信号分子ILK基因有可能是肺岩宁方抗肿瘤转移的有效作用靶点所在。
文摘目的:观察虫草多糖对单侧输尿管梗阻(UUO)小鼠肾小管上皮-间充质转化(EMT)的影响。方法:建立小鼠UUO模型,虫草多糖干预7 d。观察模型及治疗组在第7天时肾间质纤维化程度及肾小管α-平滑肌肌动蛋白(α-SMA)、肾小管上皮表型标记物(E-cadherin)、整合素连接激酶(integrin-linked protein kinase,ILK)的表达分布。结果:治疗组的肾间质纤维化程度明显改善,同时α-SMA、ILK蛋白的表达显著低于对照组(P<0.01)。而E-cadherin的表达显著高于对照组(P<0.01)。结论:虫草多糖可显著减轻E-cadherin的丢失和α-SMA的表达,并明显抑制ILK的表达,提示其可能通过下调ILK,抑制EMT,从而减轻肾小管间质纤维化。
