凝血因子Ⅶa促进SW620细胞增殖与迁移的机制探讨

目的 体外探讨凝血因子Ⅶa促进结肠癌细胞株SW620增殖与迁移的作用机制.方法 采用蛋白酶激活受体2激动剂(PAR2-AP)、凝血因子Ⅶa等处理SW620细胞,以实时定量PCR检测SW620细胞中白细胞介素8(IL-8)、组织因子(TF)及半胱氨酸蛋白酶7(caspase-7)mRNA的表达水平;以酶联免疫吸附试验(ELISA)检测细胞上清IL-8蛋白的含量;以Xa生成法检测细胞TF活性;以Western blot法检测细胞磷酸化p38丝裂原活化蛋白激酶(p-p38 MAPK)水平.结果 PAR2-AP、凝血因子Ⅶa能够增加SW620细胞中IL-8基因和蛋白的表达,上调TF mRNA水平及活性,下调caspase-7基因表达和p-p38 MAPK水平,单克隆抗TF及抗PAR2抗体均可抑制凝血因子Ⅶa的作用.结论 凝血因子Ⅶa与细胞表面TF形成复合物,通过活化PAR2,上调结肠癌细胞株SW620中IL-8、TF的表达,下调细胞caspase-7表达,从而促进细胞增殖与迁移能力,p38 IVIAPK在此过程中起负性调节作用.     

EGCG对因子Ⅶa促进SW620细胞增殖与迁移的干预作用及机制

目的探讨表没食子儿茶素没食子酸酯(EGCG)对因子Ⅶa促进SW620细胞增殖与迁移的干预作用及机制。方法用EGCG、因子Ⅶa等处理SW620细胞,应用流式细胞术、Transwell法分别检测细胞增殖周期及迁移能力;Western blotting检测细胞NF-κB抑制蛋白(IκB-α)、核NF-κB(p65/RelA)的蛋白水平变化。结果 EGCG(100 mg/L)能干预因子Ⅶa对SW620细胞增殖与迁移的促进作用;EGCG能抑制因子Ⅶa对IκB-α表达的下调作用及对核NF-κB(p65/RelA)表达的促进作用。结论 EGCG可能通过干预信号分子IκB-α和NF-κB(p65/RelA)的表达和调节作用,抑制因子Ⅶa对SW620细胞增殖与迁移的促进作用。     

Investigation of the mechanisms of coagulation factor Ⅶa-induced colon cancer 8W620 cell proliferation and migration

Objective To investigate the mechanisms that coagulation factor Ⅶa promotes proliferation and migration of a colon cancer cell line (SW620 cells) in vitro. Methods The expression of interleukin 8 (IL-8), tissue factor (TF), caspase-7 and p-p38 MAPK in SW620 cells treated with factor Ⅶa or protease activated receptor 2 aganist (PAR2-AP) was measured by ELISA, Western-blotting and QT-PCR. Results Factor Ⅶa and PAR2-AP induced IL-8 expression at both mRNA and protein levels, up-regulated TF mRNA expression and TF activity, but down-regulated caspese-7 mRNA and p-p38 MAPK levels in SW620 cells. The effects of factor Ⅶa were not only blocked by anti-TF but also by anti-PAR2 antibodies. Conclusion Factor Ⅶa binds to TF on cell surface, forming a complex which activates PAR2, then provoking IL-8 and TF expression, and suppresses caepase-7 expression, thus promotes the tumor cell proliferation and migration, p38 MAPK may negatively regulate this process.     

Investigation of the mechanisms of coagulation factor Ⅶa-induced colon cancer 8W620 cell proliferation and migration

Objective To investigate the mechanisms that coagulation factor Ⅶa promotes proliferation and migration of a colon cancer cell line (SW620 cells) in vitro. Methods The expression of interleukin 8 (IL-8), tissue factor (TF), caspase-7 and p-p38 MAPK in SW620 cells treated with factor Ⅶa or protease activated receptor 2 aganist (PAR2-AP) was measured by ELISA, Western-blotting and QT-PCR. Results Factor Ⅶa and PAR2-AP induced IL-8 expression at both mRNA and protein levels, up-regulated TF mRNA expression and TF activity, but down-regulated caspese-7 mRNA and p-p38 MAPK levels in SW620 cells. The effects of factor Ⅶa were not only blocked by anti-TF but also by anti-PAR2 antibodies. Conclusion Factor Ⅶa binds to TF on cell surface, forming a complex which activates PAR2, then provoking IL-8 and TF expression, and suppresses caepase-7 expression, thus promotes the tumor cell proliferation and migration, p38 MAPK may negatively regulate this process.     

Investigation of the mechanisms of coagulation factor Ⅶa-induced colon cancer 8W620 cell proliferation and migration

Objective To investigate the mechanisms that coagulation factor Ⅶa promotes proliferation and migration of a colon cancer cell line (SW620 cells) in vitro. Methods The expression of interleukin 8 (IL-8), tissue factor (TF), caspase-7 and p-p38 MAPK in SW620 cells treated with factor Ⅶa or protease activated receptor 2 aganist (PAR2-AP) was measured by ELISA, Western-blotting and QT-PCR. Results Factor Ⅶa and PAR2-AP induced IL-8 expression at both mRNA and protein levels, up-regulated TF mRNA expression and TF activity, but down-regulated caspese-7 mRNA and p-p38 MAPK levels in SW620 cells. The effects of factor Ⅶa were not only blocked by anti-TF but also by anti-PAR2 antibodies. Conclusion Factor Ⅶa binds to TF on cell surface, forming a complex which activates PAR2, then provoking IL-8 and TF expression, and suppresses caepase-7 expression, thus promotes the tumor cell proliferation and migration, p38 MAPK may negatively regulate this process.     

Investigation of the mechanisms of coagulation factor Ⅶa-induced colon cancer 8W620 cell proliferation and migration

Objective To investigate the mechanisms that coagulation factor Ⅶa promotes proliferation and migration of a colon cancer cell line (SW620 cells) in vitro. Methods The expression of interleukin 8 (IL-8), tissue factor (TF), caspase-7 and p-p38 MAPK in SW620 cells treated with factor Ⅶa or protease activated receptor 2 aganist (PAR2-AP) was measured by ELISA, Western-blotting and QT-PCR. Results Factor Ⅶa and PAR2-AP induced IL-8 expression at both mRNA and protein levels, up-regulated TF mRNA expression and TF activity, but down-regulated caspese-7 mRNA and p-p38 MAPK levels in SW620 cells. The effects of factor Ⅶa were not only blocked by anti-TF but also by anti-PAR2 antibodies. Conclusion Factor Ⅶa binds to TF on cell surface, forming a complex which activates PAR2, then provoking IL-8 and TF expression, and suppresses caepase-7 expression, thus promotes the tumor cell proliferation and migration, p38 MAPK may negatively regulate this process.     

Investigation of the mechanisms of coagulation factor Ⅶa-induced colon cancer 8W620 cell proliferation and migration

Objective To investigate the mechanisms that coagulation factor Ⅶa promotes proliferation and migration of a colon cancer cell line (SW620 cells) in vitro. Methods The expression of interleukin 8 (IL-8), tissue factor (TF), caspase-7 and p-p38 MAPK in SW620 cells treated with factor Ⅶa or protease activated receptor 2 aganist (PAR2-AP) was measured by ELISA, Western-blotting and QT-PCR. Results Factor Ⅶa and PAR2-AP induced IL-8 expression at both mRNA and protein levels, up-regulated TF mRNA expression and TF activity, but down-regulated caspese-7 mRNA and p-p38 MAPK levels in SW620 cells. The effects of factor Ⅶa were not only blocked by anti-TF but also by anti-PAR2 antibodies. Conclusion Factor Ⅶa binds to TF on cell surface, forming a complex which activates PAR2, then provoking IL-8 and TF expression, and suppresses caepase-7 expression, thus promotes the tumor cell proliferation and migration, p38 MAPK may negatively regulate this process.     

Investigation of the mechanisms of coagulation factor Ⅶa-induced colon cancer 8W620 cell proliferation and migration

Objective To investigate the mechanisms that coagulation factor Ⅶa promotes proliferation and migration of a colon cancer cell line (SW620 cells) in vitro. Methods The expression of interleukin 8 (IL-8), tissue factor (TF), caspase-7 and p-p38 MAPK in SW620 cells treated with factor Ⅶa or protease activated receptor 2 aganist (PAR2-AP) was measured by ELISA, Western-blotting and QT-PCR. Results Factor Ⅶa and PAR2-AP induced IL-8 expression at both mRNA and protein levels, up-regulated TF mRNA expression and TF activity, but down-regulated caspese-7 mRNA and p-p38 MAPK levels in SW620 cells. The effects of factor Ⅶa were not only blocked by anti-TF but also by anti-PAR2 antibodies. Conclusion Factor Ⅶa binds to TF on cell surface, forming a complex which activates PAR2, then provoking IL-8 and TF expression, and suppresses caepase-7 expression, thus promotes the tumor cell proliferation and migration, p38 MAPK may negatively regulate this process.     

Investigation of the mechanisms of coagulation factor Ⅶa-induced colon cancer 8W620 cell proliferation and migration

Objective To investigate the mechanisms that coagulation factor Ⅶa promotes proliferation and migration of a colon cancer cell line (SW620 cells) in vitro. Methods The expression of interleukin 8 (IL-8), tissue factor (TF), caspase-7 and p-p38 MAPK in SW620 cells treated with factor Ⅶa or protease activated receptor 2 aganist (PAR2-AP) was measured by ELISA, Western-blotting and QT-PCR. Results Factor Ⅶa and PAR2-AP induced IL-8 expression at both mRNA and protein levels, up-regulated TF mRNA expression and TF activity, but down-regulated caspese-7 mRNA and p-p38 MAPK levels in SW620 cells. The effects of factor Ⅶa were not only blocked by anti-TF but also by anti-PAR2 antibodies. Conclusion Factor Ⅶa binds to TF on cell surface, forming a complex which activates PAR2, then provoking IL-8 and TF expression, and suppresses caepase-7 expression, thus promotes the tumor cell proliferation and migration, p38 MAPK may negatively regulate this process.     

Investigation of the mechanisms of coagulation factor Ⅶa-induced colon cancer 8W620 cell proliferation and migration

Objective To investigate the mechanisms that coagulation factor Ⅶa promotes proliferation and migration of a colon cancer cell line (SW620 cells) in vitro. Methods The expression of interleukin 8 (IL-8), tissue factor (TF), caspase-7 and p-p38 MAPK in SW620 cells treated with factor Ⅶa or protease activated receptor 2 aganist (PAR2-AP) was measured by ELISA, Western-blotting and QT-PCR. Results Factor Ⅶa and PAR2-AP induced IL-8 expression at both mRNA and protein levels, up-regulated TF mRNA expression and TF activity, but down-regulated caspese-7 mRNA and p-p38 MAPK levels in SW620 cells. The effects of factor Ⅶa were not only blocked by anti-TF but also by anti-PAR2 antibodies. Conclusion Factor Ⅶa binds to TF on cell surface, forming a complex which activates PAR2, then provoking IL-8 and TF expression, and suppresses caepase-7 expression, thus promotes the tumor cell proliferation and migration, p38 MAPK may negatively regulate this process.     

Investigation of the mechanisms of coagulation factor Ⅶa-induced colon cancer 8W620 cell proliferation and migration

Objective To investigate the mechanisms that coagulation factor Ⅶa promotes proliferation and migration of a colon cancer cell line (SW620 cells) in vitro. Methods The expression of interleukin 8 (IL-8), tissue factor (TF), caspase-7 and p-p38 MAPK in SW620 cells treated with factor Ⅶa or protease activated receptor 2 aganist (PAR2-AP) was measured by ELISA, Western-blotting and QT-PCR. Results Factor Ⅶa and PAR2-AP induced IL-8 expression at both mRNA and protein levels, up-regulated TF mRNA expression and TF activity, but down-regulated caspese-7 mRNA and p-p38 MAPK levels in SW620 cells. The effects of factor Ⅶa were not only blocked by anti-TF but also by anti-PAR2 antibodies. Conclusion Factor Ⅶa binds to TF on cell surface, forming a complex which activates PAR2, then provoking IL-8 and TF expression, and suppresses caepase-7 expression, thus promotes the tumor cell proliferation and migration, p38 MAPK may negatively regulate this process.     

Investigation of the mechanisms of coagulation factor Ⅶa-induced colon cancer 8W620 cell proliferation and migration

Objective To investigate the mechanisms that coagulation factor Ⅶa promotes proliferation and migration of a colon cancer cell line (SW620 cells) in vitro. Methods The expression of interleukin 8 (IL-8), tissue factor (TF), caspase-7 and p-p38 MAPK in SW620 cells treated with factor Ⅶa or protease activated receptor 2 aganist (PAR2-AP) was measured by ELISA, Western-blotting and QT-PCR. Results Factor Ⅶa and PAR2-AP induced IL-8 expression at both mRNA and protein levels, up-regulated TF mRNA expression and TF activity, but down-regulated caspese-7 mRNA and p-p38 MAPK levels in SW620 cells. The effects of factor Ⅶa were not only blocked by anti-TF but also by anti-PAR2 antibodies. Conclusion Factor Ⅶa binds to TF on cell surface, forming a complex which activates PAR2, then provoking IL-8 and TF expression, and suppresses caepase-7 expression, thus promotes the tumor cell proliferation and migration, p38 MAPK may negatively regulate this process.     

乙肝病毒X蛋白对不同肝细胞系凋亡的诱导作用

目的:研究乙型肝炎病毒X蛋白(hepatitis B virus X protein,HBX)通过核转录因子NF-κB信号通路对不同肝细胞系凋亡的诱导作用。方法:建立稳定转染PEGFP-N1-HBX质粒的人正常肝细胞系L02(L02/HBX)和人肝癌细胞系HepG2(HepG2/HBX),用特异性NF-κB阻断剂吡咯二硫代氨基甲酸酯(pyrrolidine dithiocarbamate,PDTC)阻断NF-κB信号通路,流式细胞术检测PEGFP-N1-HBX转染前后及加入PDTC前后L02和HepG2细胞的细胞周期与凋亡,Western blotting检测NF-κB的表达。结果:成功构建了稳定转染PEGFP-N1-HBX的L02/HBX和HepG2/HBX细胞。与对照组L02细胞相比,L02/HBX细胞凋亡率明显增加[(31.31±0.51)%vs(14.05±0.09)%,P<0.05];其G0/G1期细胞比例显著增加,S期和G2/M期细胞比例减少。与对照组HepG2细胞相比,HepG2/HBX细胞凋亡率显著降低[(1.21±0.04)%vs(10.26±0.10)%,P<0.05];其G0/G1期细胞比例显著减少,S期和G2/M期细胞比例增加。PDTC作用后,L02/HBX/PDTC组凋亡率[(40.33±0.07)%]及G0/G1期细胞比例较L02/HBX组显著增加,G2/M期细胞比例明显减少,而HepG2/HBX/PDTC组凋亡率[(5.45±0.07)%]及G0/G1期细胞比例较HepG2/HBX组显著增加,S期和G2/M期细胞比例明显减少,但其凋亡率仍低于对照HepG2细胞。West-ern blotting结果显示,L02/HBX细胞NF-κB表达显著下调,而HepG2/HBX细胞NF-κB表达显著增加,L02/HBX/PDTC和HepG2/HBX/PDTC细胞NF-κB几乎不表达。结论:HBX可下调正常肝细胞L02 NF-κB蛋白的表达,阻滞细胞周期,促进细胞凋亡;而HBX可增加肝癌细胞系HepG2中NF-κB蛋白的表达,加速细胞周期,抑制肝癌细胞凋亡。     

IL-17A通过NF-κB通路介导MMP-2/9表达促进结肠癌SW480细胞迁移和侵袭

目的:探讨IL-17A对结肠癌细胞株SW480侵袭、迁移的作用及其机制.方法:体外培养结肠癌SW480细胞,分为实验组(IL-17A50 ng/ml)及对照组(空白组).通过细胞划痕实验观察细胞的迁移能力,Transwell侵袭实验检测细胞的侵袭能力,Western blotting检测细胞MMP-2/9蛋白及PI3k/AKT/NF-κB通路相关蛋白的表达水平.结果:经50 ng/ml的IL-17A处理后,(1)SW480细胞的迁移距离及穿膜细胞数目均明显增加[(2.49±0.18) vs (1.54±0.21) mm及(262.00±24.60)vs (92.00 ±31.16)个,均P＜0.05];(2) SW480细胞MMP-2/9蛋白水平明显上调[(0.41 ±0.05) vs (0.23 ±0.03)及(0.76±0.09) vs (0.25±0.04),均P＜0.05];(3) SW480细胞AKT磷酸化水平表达增加[(0.72±0.1)vs(0.28±0.04),P＜0.05],P65和P50蛋白表达水平明显升高[(0.78 ±0.10) vs (0.35 ±0.04)和(0.85±0.15) vs (0.44±0.06),均P＜0.05],而c-Rel、ReLB和P52蛋白表达无明显变化(P＞0.05).结论:IL-17A诱导结肠癌SW480细胞迁移和侵袭,其机制可能与激活PI3K/AKT/NF-κB转导通路、调节MMP-2/9蛋白表达有关.     

热休克蛋白70抑制剂PES对人胃癌BGC细胞NF-κB通路的影响

目的:探讨热休克蛋70(heat shock protein 70,Hsp70)抑制剂PES(2-phenylethynesulfonamide)对人胃癌BGC细胞活性、细胞迁移以及核因子-κB(nuclear factor-κB,NF-κB)信号通路的影响。方法 :采用Hsp70抑制剂PES处理人胃癌BGC细胞后,应用CCK-8(cell counting kit-8)法检测BGC细胞的活性,细胞划痕实验检测BGC细胞的迁移能力,蛋白质印迹法检测NF-κB信号通路成员及其下游血管内皮生长因子(vascular endothelial growth factor,VEGF)的表达,免疫荧光法观察BGC细胞质中p65的表达。结果 :与未经PES处理的BGC细胞(对照组)比较,5、10和20μmol/L的PES处理BGC细胞72 h后,BGC细胞活性和细胞迁移率被明显抑制(P值均<0.05)。20μmol/L的PES处理后,BGC细胞NF-κB信号通路中磷酸化p65(phospho-p65,p-p65)、p65、NF-κB抑制蛋白激酶α(inhibitory protein of NF-κB kinaseα,IKKα)、p-IKKα、p-IKKβ、IKKβ、p-Akt和Akt以及下游VEGF蛋白的表达水平均明显低于对照组(P值均<0.05),且细胞质中p65蛋白的荧光明显减弱。结论 :Hsp70抑制剂PES可抑制胃癌BGC细胞的活性和迁移,下调BGC细胞NF-κB信号通路活性以及下游VEGF蛋白的表达水平,降低BGC细胞质中p65的表达。     

下调microRNA-214表达对人卵巢癌SKOV-3细胞迁移及侵袭的影响

目的:探讨下调microRNA-214 (miR-214)表达对人卵巢癌SKOV-3细胞迁移和侵袭的作用及其可能机制.方法:采用脂质体介导法将miR-214抑制剂转染人卵巢癌SKOV-3细胞,Real-time PCR法检测miR-214、核因子-κB(nuclear factor-κB,NF-κB)和尿激酶型纤溶酶原激活剂(uridylyl phosphate adenosine,uPA)基因mRNA的表达,Western blotting法检测细胞NF-κB和uPA蛋白表达.划痕试验检测细胞迁移能力,Transwell小室法检测细胞侵袭能力.结果:经转染miR-214抑制剂后,人卵巢癌SKOV-3细胞miR-214表达降低,细胞迁移和侵袭能力降低.同时NF-κB和uPA mRNA和蛋白表达也降低.结论:下调人卵巢癌SKOV-3细胞miR-214表达可抑制细胞迁移和侵袭能力,下凋NF-κB和uPA基因表达可能是其作用机制.     

NF-κB抑制剂二硫代氨基甲酸吡咯烷提高卵巢癌细胞顺铂化疗的敏感性

目的:探讨核因子κB(nuclear factor kappa B, NF-κB)抑制剂二硫代氨基甲酸吡咯烷(pyrrolidine dithiocarbamate,PDTC)提高人卵巢癌SKOV-3细胞对顺铂(cisplatin)化疗敏感性的作用及其可能的机制.方法:用不同浓度PDTC联合顺铂在不同时间作用于卵巢癌SKOV-3细胞,MTT法观察药物作用对细胞生长的抑制,Western Blotting分析胞质内NF-κB 抑制蛋白α(inhibitor of NF-κB ,I-κBα)、胞核P65蛋白的表达;流式细胞术检测细胞凋亡.结果:PDTC(10～40 μmol/L)或顺铂(0.1～100 μg/ml )均明显抑制SKOV-3细胞的生长(P<0.05或P<0.01),并引起细胞的凋亡;小剂量PDTC(2.5、5 μmol/L)和顺铂(0.01 μg/ml)联合应用与单用顺铂比较,可明显增加细胞生长抑制率和细胞凋亡率(均P<0.05).单用顺铂组与对照组比较,胞质I-κBα蛋白减少而胞核P65蛋白增多,联合使用PDTC可逆转此现象.结论:小剂量PDTC可增强卵巢癌细胞对顺铂的敏感性,这一作用可能与PDTC增加I-κBα蛋白的表达而抑制P65蛋白进入核内有关.     

姜黄素增强人乳头瘤状甲状腺癌细胞TPC-1放射敏感性的研究

目的 研究姜黄素对人乳头瘤状甲状腺癌细胞TCP-1放射敏感性的影响,并探索姜黄素可能作用的信号通路,为甲状腺癌放射增敏剂的开发提供新的思路。方法 使用姜黄素和放射性碘处理人乳头瘤状甲状腺癌细胞TPC-1,CCK-8法检测细胞增殖,克隆形成实验检测细胞克隆形成能力,流式细胞仪检测细胞凋亡情况,western blot检测p50、p65、凋亡相关蛋白Bcl-2和Bax的表达变化。使用NF-κB信号通路抑制剂PDTC抑制NF-κB信号通路活性,检测细胞增殖、克隆形成和凋亡变化。结果 姜黄素和放射性碘处理人乳头瘤状甲状腺癌细胞TPC-1后,细胞增殖率下降,克隆形成减少,凋亡上升,凋亡抑制蛋白Bcl-2表达下调,促凋亡蛋白Bax表达上调,并呈浓度依赖性。这些结果表明姜黄素可增加TPC-1细胞的放射敏感性。碘放射后TPC-1细胞NF-κB通路活化,姜黄素可以抑制碘放射后TPC-1细胞NF-κB通路的激活。使用抑制剂抑制NF-κB通路的活性,细胞增殖下降,克隆形成减少,凋亡上升,放射敏感性升高。结论 姜黄素可能靶向NF-κB信号通路,通过抑制NF-κB信号通路活性调节甲状腺癌细胞的放射敏感性。     

基于PD-1介导NF-κB通路探讨莪术-三棱抗肝癌的机制

目的:基于程序性死亡受体1(programmed death-1,PD-1)介导NF-κB通路探究莪术-三棱对肝癌细胞的影响及作用机制。方法:在体检测各组药物对H22肝癌荷瘤小鼠抑瘤率、脏器指数的影响;对白细胞介素1(interleukin-1,IL-1)、白细胞介素6(interleukin-6,IL-6)及肿瘤坏死因子(tumor necrosis factor-α,TNF-α)水平的影响。运用免疫组化观察瘤组织NF-κBp65、Bcl-2以及Bax蛋白阳性表达。MTT法检测莪术醇、三棱内酯B二者单用及联用对HepG2肝癌细胞的抑制率;蛋白质免疫印迹法检测联合应用对PD-1、NF-κB、Bcl-2、κB抑制因子激酶α/β(inhibitor ofκB kinase α/β,IKK-α/β)以及核因子κB抑制蛋白α(inhibitor of NF-κB,IκB-α)的影响。结果:体内实验表明,与模型组相比,联合用药能够显著降低瘤质量,能够抑制TNF-α、IL-1和IL-6的表达(其中联合用药高剂量组TNF-α、IL-1和IL-6下降显著),能够抑制瘤组织中NF-κBp65、Bcl-2...     

EGF介导的NF-κB促进体外胰腺癌细胞的uPA表达与侵袭力

目的探讨表皮生长因子(EGF)促进胰腺癌细胞侵袭和转移的分子机制。方法用WST-1细胞增殖实验、细胞黏附实验和Transwell体外侵袭实验检测EGF对胰腺癌细胞系NOR-P1的增殖、黏附及侵袭能力的影响。采用Western blot和逆转录-聚合酶链反应(RT-PCR)检测uPA的表达。用凝胶电泳迁移实验检测核因子-κB(NF-κB)活性。结果EGF能够明显促进胰腺癌细胞的侵袭能力,但对胰腺癌细胞的黏附力及增殖并无明显影响。EGF明显上调胰腺癌细胞的NF-κB活性和尿激酶型纤溶酶原激活物(uPA)表达。NF-κB抑制物四氢化吡咯二硫代氨基甲酸酯(PDTC)能够明显抑制EGF所诱导的NF-κB活性,同时也抑制EGF所诱导的uPA表达及胰腺癌细胞的侵袭力。结论EGF通过活化NF-κB促进胰腺癌细胞的uPA表达和侵袭力,采用NF-κB抑制剂阻断NF-κB通路有利于胰腺癌的综合治疗。