塞来昔布对非小细胞肺癌放疗的增敏作用

目的 探讨塞来昔布对非小细胞肺癌(NSCLC)放疗增敏作用的影响.方法 回顾性分析2012年5月-2013年10月收治的NSCLC患者90例,按治疗方法分为研究组44例和对照组46例,对照组予以同步放化疗方案,研究组在对照组基础上给予塞来昔布口服,观察2组临床疗效、不良反应发生情况,比较治疗前后KPS评分及治疗后2年内生存情况.结果 研究组治疗总有效率及1年、2年生存率均高于对照组,差异有统计学意义(P＜0.05).2组严重不良反应发生率比较差异无统计学意义(P＞0.05).治疗6个周期后,2组KPS评分较治疗前提高,且研究组高于对照组,差异有统计学意义(P＜0.05).结论 同步放化疗同时联合塞来昔布口服能有效增加NSCLC患者放疗敏感性,可提高临床疗效、延长患者生存时间.     

塞来昔布联合卡介苗治疗大鼠膀胱肿瘤的实验研究

目的：观察联合应用塞来昔布与卡介苗治疗大鼠膀胱肿瘤的疗效,并探讨其机制。方法：选用5-6周龄雌性Wistar大白鼠40只,随机分为4组．即PBS组、塞来昔布组、卡介苗组、塞来昔布＋卡介苗组。均采用膀胱灌注MNU（N-甲基亚硝基脲1制成大鼠膀胱肿瘤模型,于灌注MNU后第10周开始给予相应的药物干预治疗,于第13周处死所有大鼠．观察膀胱肿瘤的形成情况,免疫组织化学检测肿瘤组织中的CD3^＋、CD4^＋、CD8^＋细胞的浸润情况,TUNEL法检测肿瘤细胞的凋亡指数（apoptotic index,AI）。结果：联合用药组CD3^＋、CD4^＋、CD8^＋细胞浸润百分比及肿瘤细胞AI值与其他组相比,差异有统计学意义（P〈0．05）。结论：联合应用塞来昔布和卡介苗比单纯使用卡介苗或塞来昔布能更加明显地抑制大鼠膀胱肿瘤的生长,其机制可能是通过促进免疫系统的功能和诱导肿瘤细胞凋亡增加而发挥作用的。     

塞来昔布联合放化疗治疗晚期肺癌近期疗效观察

目的:观察塞来昔布在晚期肺癌同步放化疗中的增敏作用.方法:35例晚期非小细胞肺癌患者随机分为观察组和对照组,两组均接受相同的同步放化疗,观察组放化疗期间每周2次口服塞来昔布400 mg,比较两组疗效及不良反应.结果:第3周期化疗结束后,观察组有效率较对照组明显提高(61.11％和23.53％,P＜0.05),不良反应两组差异无统计学意义.结论:塞来昔布能够增加晚期肺癌放化疗的敏感性,患者耐受性良好.     

塞来昔布联合放化疗对比单纯放化疗治疗晚期非小细胞肺癌疗效与安全性的Meta分析

目的:系统评价塞来昔布联合放化疗对比单纯放化疗治疗晚期非小细胞肺癌(NSCLC)的疗效与安全性,以为临床治疗提供循证参考。方法:计算机检索Pub Med、EMBase、Cochrane Library、中国期刊全文数据库、维普数据库、万方数据库,纳入塞来昔布联合放化疗(试验组)对比单纯放化疗(对照组)治疗晚期NSCLC的随机对照试验(RCT),由两位研究者按照纳入与排除标准独立筛选文献、提取资料及评价质量,采用Rev Man 5.2统计软件进行Meta分析。结果:共纳入8项RCT,合计1 319例患者。Meta分析结果显示,试验组能提高患者有效率[OR=1.35,95%CI(1.06,1.73),P=0.02],却也显著增加了不良反应发生率[OR=2.52,95%CI(1.81,3.50),P<0.000],与对照组比较差异均有统计学意义;两组患者中位生存时间[MD=-0.53,95%CI(-1.58,0.51),P=0.32]和1年生存率[OR=1.21,95%CI(0.95,1.53),P=0.12]比较差异均无统计学意义。结论:塞来昔布联合放化疗较单纯放化疗可显著提高NSCLC患者的有效率,但亦增加了不良反应发生率,而对中位生存时间和1年生存率无显著影响,临床上综合治疗应视个体具体情况而定。由于纳入研究数量较少、质量偏低,该结论有待大样本、高质量的RCT进一步证实。     

塞来昔布对肺癌的抑制作用机制研究

目的探讨环氧化酶抑制剂（COX-2）抑制剂塞来昔布对于A549肺癌细胞增殖及其小鼠移植瘤生长的抑制作用及可能机制。方法加不同浓度塞来昔布与A549肺癌细胞共培养,MTT法检测细胞增殖。流式细胞仪法检测细胞凋亡情况。A549细胞移植入BALB／c裸小鼠皮下后,随机分为实验组和对照组,实验组隔日腹腔注射塞来昔布30mg．kg^-1,对照组隔日腹腔注射等体积生理盐水,24d后处死移植瘤小鼠,计算抑瘤率,RT-PCR检测移植瘤组织中COX一2和VEGFmRNA表达水平,同时酶联免疫检测小鼠血清中MMP-9浓度,免疫组化检测瘤组织中微血管密度（MVD）。结果塞来昔布在体外对细胞株A549的生长抑制作用呈剂量、时间依赖性,且经塞来昔布作用后,A549细胞G0／G1期比例增加,S、G2／M期比例下降。在体实验显示,塞来昔布具有明显的抑制A549肺癌移植瘤增殖的作用,同时能抑制移植瘤组织中COX-2、VEGF表达,降低血清MMP-9浓度,减少移植瘤中微血管密度（P〈0．05）。结论塞来昔布在体内外均可显著抑制A549肺癌细胞的增殖,而诱导肿瘤细胞凋亡,抑制肿瘤血管生成和降低癌细胞侵袭能力是其可能的作用机制。     

塞来昔布致急性胰腺炎

1例43岁女性患者因肩周炎服用塞来昔布胶囊0．2g,2次／d,共服用2周。末次服药后2h上腹出现持续性钝痛,伴腹胀、恶心、呕吐。实验室检查示血清淀粉酶1822U／L,胰淀粉酶1529U／L,脂肪酶1410U／L,白细胞计数12．7×10^9／L,中性粒细胞0．74,淋巴细胞0．16。腹部超声检查和磁共振胰胆管造影示胰腺弥漫性增大、胰腺周围有液性渗出,诊断为急性胰腺炎。停用塞来昔布,禁食,给予营养支持和抑酶、抑酸、抗感染治疗13d,患者腹痛、腹胀消失,实验室检查示淀粉酶86U／L,胰淀粉酶48U／L,脂肪酶55U／L,白细胞计数7．2×10^9／L,中性粒细胞0．65,淋巴细胞0．32。胰腺CT示胰头、胰体和胰尾位于同一层面,形态及大小基本正常。     

比卡鲁胺联合塞来昔布对前列腺癌细胞LNCaP增殖的影响

目的观察比卡鲁胺联合塞来昔布对前列腺癌细胞LNCaP增殖的影响并探讨其可能的作用机制。方法培养前列腺癌LNCaP细胞,采用MTT法测定细胞生长的抑制情况,化学发光法检测细胞培养液中总前列腺特异抗原(PSA)的浓度,流式细胞仪检测各组细胞的凋亡率,Western Blot检测各组细胞Caspase 3和Caspase 8蛋白的表达情况。结果 MTT检测结果显示,对照组在24,48和72 h的细胞生长抑制率均为0。比卡鲁胺组、塞来昔布组和联合组在24,48和72 h的生长抑制率均明显较高(P<0.05)。对组间细胞的生长抑制率联合组显著优于单一组(P<0.05)。化学发光法检测结果显示,与对照组相比,比卡鲁胺组、塞来昔布组以及联合组PSA浓度明显降低,其中联合组对PSA的抑制程度明显优于比卡鲁胺组和塞来昔布组(P<0.05)。流式细胞仪检测结果显示,对照组在24,48和72 h的细胞凋亡率均低于比卡鲁胺组、塞来昔布组和联合组在24,48和72 h的生长抑制率。组间细胞的生长抑制率联合组显著优于比卡鲁胺组和塞来昔布组(P<0.05)。Western Blot结果提示,与对照组相比,给药组Caspase 3和Caspase 8蛋白的表达水平均显著升高,且联合组明显高于比卡鲁胺组和塞来昔布组(P<0.05)。结论比卡鲁胺联合塞来昔布能有效抑制前列腺癌细胞LNCaP的增殖,其机制可能与促进相关蛋白Caspase 3和Caspase 8凋亡进而促进肿瘤细胞的凋亡有关。     

塞来昔布对非小细胞肺癌化疗的增敏作用及机制

目的 探讨塞来昔布对非小细胞肺癌(NSCLC)的化疗增敏作用及其机制.方法 应用噻唑蓝比色法(MTT)检测顺铂(DDP)、足叶乙甙(VP16)单独应用及与塞来昔布联合应用的增殖抑制率,并根据金氏公式计算Q值,评价两药的合用效应.应用流式细胞术检测各处理组的凋亡率.结果 DDP联合塞来昔布后对NSCLC抑制作用明显增强,二者合用有协同作用.VP16联合塞来昔布后对NSCLC抑制作用明显增强,二者合用有协同作用.塞来昔布与顺铂联合用药的凋亡率明显高于单用药组(P＜0.01).结论 塞来昔布可增强DDP、VP16对NSCLC的增殖抑制作用,具有化疗增敏作用,其机制可能与塞来昔布促进凋亡有关.     

塞来昔布抗肿瘤作用的研究概况

塞来昔布（celecoxib）是美国searle pharmacia公司于1999年推向市场的非甾体抗炎药,为环氧化酶-2（COX-2）选择性抑制药,可减轻传统非甾体抗炎药（NSAID）消化道系统的不良反应,又有抗炎镇痛作用,临床主要用于治疗急慢性骨关节炎和类风湿性关节炎。目前的国内外流行病学、临床和实验研究表明,塞来昔布还具有预防和抑制肿瘤的作用,由于其靶向性强,副作用小,已在多种肿瘤预防和治疗中发挥作用。本文就近年来塞来昔布的抗肿瘤作用的研究进展综述如下。     

塞来昔布对人肺癌A549细胞株增殖抑制和凋亡诱导作用观察

目的 体外研究选择性环氧化酶2 (COX-2)抑制剂塞来昔布对人肺癌细胞株A549增殖和凋亡的影响,并探讨其可能的作用机制.方法 采用噻唑蓝(MTT比色法)观察不同浓度的塞来昔布对人肺癌细胞株A549的增殖抑制作用,TUNEL染色检测细胞凋亡,并用含半胱氨酸的门冬氨酸蛋白水解酶-3(caspase-3)活性检测试剂盒检测其活性变化.结果 塞来昔布能够以浓度依赖性方式有效地抑制K562细胞增殖,药物的Ic50为33.98 μmol·L-1;TUNEL染色分析显示给予不同浓度塞来昔布的细胞与未给予塞来昔布的细胞相比凋亡率有差异(P＜0.05),经塞来昔布处理的A549细胞内caspase-3的A405较正常对照组有显著增加(P＜0.05).结论 塞来昔布能够抑制A549细胞增殖,并呈药物浓度依赖性;塞来昔布能以浓度依赖性方式诱导K562细胞凋亡,其机制涉及caspase-3活化的信号转导途径.     

Emerging angiogenesis inhibitors for non-small cell lung cancer

Introduction: Angiogenesis represents a complex process crucial during embryo development, wound healing, and collateral formation for improved organ perfusion. Numerous stimulatory and inhibitory pathways through their balance regulate angiogenesis and vascular homeostasis. Targeting the pathways implicated in the regulation of angiogenesis and neo-angiogenesis plays an important role in cancer research, treatment, and patients’ outcome. Antiangiogenic strategies, including monoclonal antibodies binding vascular endothelial growth factor (VEGF) or the corresponding receptor and small molecules which inhibit the function of different angio–related tyrosine kinase, produced interesting results in cancer treatments including non-small-cell lung cancer (NSCLC).

Areas covered: The current state-of-the-art of anti-angiogenesis treatment in the management of NSCLC patients is reviewed and discussed. A structured search of bibliographic databases for peer-reviewed research literature and of main meetings using a focused review question was undertaken in order to discuss about emerging angiogenesis inhibitors in NSCLC.

Expert opinion: Targeting angiogenesis remains an important therapeutic strategy in the management of NSCLC. Moreover, VEGF has been recognized having also an immunosuppressive action leading to investigate the potential activity of angiogenic inhibitors in restoring the antitumor immunity by targeting VEGF/VEGF-Receptor. Furthermore, new anti-angiogenic drugs for which there is also the availability of predictive biomarkers are welcome.     

Anti-cancer effect of celecoxib and aerosolized docetaxel against human non-small cell lung cancer cell line, A549

Direct delivery of chemotherapeutic agents to the lung can increase both the drug concentration and exposure period to lung tumours. The objective of this study was to formulate docetaxel (DOC) into a metered dose inhaler (MDI), assess its aerodynamic characteristics and to evaluate the effect of celecoxib (CXB), a cyclooxygenase-2 (COX-2) inhibitor, on the in-vitro cytotoxicity and apoptotic response of aerosolized DOC against human lung adenocarcinoma cell line A549. A stable solution-type MDI formulation was developed with 0.25% DOC and 15% w/w ethyl alcohol using HFA 134a propellant. The formulation was evaluated for medication delivery, mass median aerodynamic diameter (MMAD), geometric standard deviation (GSD), percent throat deposition, respirable mass and respirable fraction. A six-stage viable impactor was used to assess the in-vitro cytotoxicity of DOC-MDI alone or in combination with CXB. Induction of apoptosis in A549 cells by DOC (non-aerosolized and aerosolized) in combination with CXB was evaluated by established techniques, such as caspase-3 estimation and terminal deoxynucleotidyl transferase-mediated nick end labelling (TUNEL) staining. The influence of different treatments on the expression of COX-2 and peroxisome proliferator-activated receptor-gamma(PPAR-gamma) in A549 cells was studied by RT-PCR. The DOC-MDI formulation had a MMAD of 1.58 microm, (GSD = 3.2) and a medication delivery of 80 microg/shot. DOC-MDI (one shot) in combination with CXB (10 microg mL(-1)) had a cell kill of more than 80% as determined by in-vitro cytotoxicity assay. The specific caspase-3 activity in A549 cells treated with DOC (0.01 microg mL(-1)) and CXB (10.0 microg mL(-1)) combination was 4 times higher than CXB and untreated control group, respectively. Further, TUNEL staining showed significant apoptosis of A549 cells treated with aerosolized DOC alone or in combination with CXB when compared with CXB and untreated cells. The RT-PCR experiments showed similar expression of COX-2 in both control and treated groups. PPAR-gamma expression was increased in the combination treatment (0.01 microg mL(-1) DOC and 10 microg mL(-1) CXB) as compared with control (untreated), DOC (0.01 microg mL(-1)) and CXB (10 microg mL(-1)) treatments. Our results indicate the potential of inhalation delivery of DOC in the treatment of lung cancer.     

塞来昔布顺铂对卵巢癌细胞HO-8910增殖与凋亡影响的研究

目的探讨选择性环氧化酶(COX)-2抑制剂塞来昔布联合顺铂对人卵巢癌细胞株HO-8910增殖与凋亡的影响及Survivin、增殖细胞核抗原(PCNA)、COX-2蛋白表达情况。方法四甲基偶氮唑蓝(MTT)法测定不同浓度塞来昔布单用及其与顺铂联用时HO-8910细胞的增殖抑制率;流式细胞仪检测细胞周期及细胞凋亡率;免疫组织化学法检测Survivin、PCNA、COX-2蛋白的表达情况。采用方差分析和LSD-t检验进行统计分析。结果塞来昔布、顺铂均可抑制HO-8910细胞的生长(P<0.01);当两者合用时G0/G1期细胞增加,凋亡率增高更加明显(P<0.01),Survivin、PCNA、COX-2蛋白表达下调(P<0.01)。结论塞来昔布、顺铂对卵巢癌细胞株HO-8910均有抑制作用,塞来昔布能增强顺铂的抗卵巢癌作用。     

HIF,hypoxia and the role of angiogenesis in non-small cell lung cancer

Importance of the field: The role of angiogenesis in the initiation and progression of NSCLC and the molecular alterations leading to the growth of tumor vasculature are areas of great interest and recent therapeutic success.

Areas covered in this review: VEGF and its receptors play critical roles in the development of tumor vasculature and can be targeted by agents such as bevacizumab in the treatment of NSCLC. Furthermore, tumor hypoxia and the expression of the hypoxia-inducible factor (HIF) family of proteins are also linked to poorer survival in these patients. Recent studies using genetically engineered mouse models expressing stabilized HIF validate the importance of HIF in the evolution of NSCLC and demonstrate genetically that HIF is involved in NSCLC.

What the reader will gain: An overview of the key pathways and mediators of tumor angiogenesis, their relevance to the pathogenesis of NSCLC, and an update on the current status of angiogenesis inhibitors in NSCLC.

Take home message: Angiogenesis is a key mediator of NSCLC progression. Several antiangiogenic strategies are in clinical use and under development. While candidate predictive biomarkers of response to antiangiogenic therapy exist, they await independent and prospective validation.     

鱼藤素对非小细胞肺癌细胞体内外增殖的影响

目的探究鱼藤素(deguelin)对非小细胞肺癌细胞A549与裸鼠移植瘤增殖的影响。方法采用CCK-8法测定鱼藤素对A549细胞增殖的抑制作用;通过赫斯特染色和AnnexinV-FITC/PI双染实验探究鱼藤素对细胞凋亡形态以及细胞凋亡率的影响;流式细胞术测定鱼藤素对A549细胞周期的影响;此外,通过裸鼠移植瘤模型的体内实验和HE染色探究鱼藤素对裸鼠移植瘤的影响。结果鱼藤素呈浓度和时间依赖性抑制A549细胞增殖;赫斯特染色和AnnexinV-FITC/PI双染实验进一步证实了鱼藤素能诱导A549细胞凋亡;鱼藤素呈浓度依赖性阻滞A549细胞周期于G 2/M期;裸鼠移植瘤模型实验和HE染色实验发现,鱼藤素对A549裸鼠移植瘤的生长有明显抑制作用(P<0.01)。结论鱼藤素对肺癌细胞A549具有显著抑制作用,为鱼藤素的抗肿瘤活性提供新的基础。     

丙戊酸联合顺铂对体外人非小细胞肺癌细胞的增殖抑制作用

目的探讨丙戊酸（VPA）联合顺铂（DDP）对人非小细胞肺癌细胞A549、NCI．H460增殖抑制及细胞凋亡的影响,以及两药联合影响肺癌细胞增殖的机制。方法3组不同质量浓度的VPA与DDP单药及联合作用于人非小细胞肺癌细胞A549、NCI—H460,培养24、48、72h后,观察细胞数量和形态的变化,用MTF法分析药物对细胞增殖的抑制率（IR）及联合用药对细胞增殖抑制率q值,Hoechst／PI双染检测细胞凋亡的数量变化,Westernblot观察联合用药对Bcl．2、Caspase．3、Caspase．8蛋白的表达变化。结果培养48h后,各用药组细胞数目减少十分明显,其中VPA＋DDP组较单独用药组减少更为显著,其细胞形态发生较大改变;MTF法及q值计算结果显示,对A549细胞,VPA的增殖抑制作用呈现明显的时间与浓度依赖性,在高质量浓度时（300mg·L-1）与DDP具有协同作用;对NCI—H460细胞,当VPA的质量浓度≤100mg·L-1时,未显示出明显的时间与浓度依赖性,所有浓度均未显示出VPA与DDP的协同作用。VPA联合DDP可以进一步促进A549与NCI—H460的细胞凋亡,导致两细胞中凋亡因子Bcl-2水平的明显下调。联合作用对A549细胞更为明显,可能与该细胞中抑凋亡因子Bcl-2低表达及促凋亡因子Caspase-3、Caspasel8高表达有关。结论VPA能增强DDP对人非小细胞肺癌细胞的增殖抑制作用,联合作用的协同性与药物浓度及细胞类型有关,不同类型细胞对药物敏感性的差异可能与细胞自身表达的凋亡因子的含量有关。     

黄芪多糖对人肺癌A549 细胞增殖的作用及其机制的实验研究

目的探讨黄芪多糖（astragalus polysaccharide,APS）对人肺癌A549细胞增殖的作用及其机制。方法用不同浓度的APS（25μg.mL-1、50μg.mL-1、10μg.mL-1、200μg.mL-1、400μg.mL-1）作用于人肺癌A549细胞,用MTT法检测细胞增殖的抑制率,免疫细胞化学法检测bcl-2和bax的表达。结果 APS的浓度在25μg.mL-1～400μg.mL-1范围内均可抑制人肺癌A549细胞的增殖,100μg.mL-1的APS对A549细胞增殖的抑制率达最高,100μg.mL-1的APS作用于人肺癌A549细胞48和72小时后,均可下调bcl-2和上调bax的表达。结论 APS能够可抑制人肺癌A549细胞的增殖,可能与其下调bcl-2和上调bax的表达有关。     

Phase I and pharmacokinetic study of docetaxel, irinotecan, and celecoxib in patients with advanced non-small cell lung cancer

Summary Purpose: We studied the toxicities, potential pharmacokinetic interactions, and preliminary antitumor activity of the combination of docetaxel and irinotecan with celecoxib, a selective cyclooxygenase-2 inhibitor. Patients and methods: Eligible patients had advanced non-small lung cancer (NSCLC) with measurable disease, good performance status, and adequate end organ function. Docetaxel and irinotecan were administered intravenously on days 1 and 8, every 21 days, and their doses were escalated on successive patient cohorts at three dose levels: 30/50, 30/60, and 35/60 (doses in mg/m²). Celecoxib was administered at a starting dose of 400 mg orally twice daily without interruption, beginning on day 2 of cycle 1. Pharmacokinetic studies were performed on day 1 of cycle 1 and day 1 of cycle 2. Results: Seventeen patients with advanced NSCLC were enrolled and collectively received 78 cycles of therapy. Diarrhea was the most common toxicity; it was noted in 13 patients (76%). Dose-limiting toxicities occurred at dose level 1 (myocardial infarction in a patient with multiple coronary artery disease risk factors) and dose level 3 (grade 4 neutropenia with fatal urosepsis). Other major toxicities were: grade 3 neutropenia (2 patients); grade 3/4 diarrhea (3/1); grade 3 nausea (2); grade 2 rash (1); and grade 3 pneumonitis (1). The maximum tolerated dose was at dose level 3, i.e., docetaxel 35 mg/m² and irinotecan 60 mg/m² on days 1 and 8, plus celecoxib 400 mg twice daily, repeated every 21 days. Five of 15 evaluable patients achieved an objective response. The pharmacokinetics of docetaxel were not altered by celecoxib. However, we observed an 18% increase in the average elimination clearance of irinotecan coincident with the addition of celecoxib. Conclusions: The addition of celecoxib to docetaxel and irinotecan was generally well tolerated but unpredictable fatal toxicity occurred. Diarrhea was the most common toxicity. Antitumor activity was promising. The alteration of irinotecan pharmacokinetic parameters observed may not be clinically relevant. Supported in part by grant M01 RR-00048 from the National Center for Research Resources, National Institutes of Health, and by Pfizer Global Pharmaceuticals, New York, NY, and by Aventic Pharmaceuticals, a member of the Sanofi-Aventis Group.     

新藤黄酸干预肺腺癌血管生成的细胞学研究

目的 通过对人脐静脉内皮细胞HUVEC和人肺腺癌A549的培养,检测含新藤黄酸(GNA)条件培养基对血管内皮细胞存活率、成管和生长的影响.方法 采用甲基噻唑基四唑(MTT)法和平板克隆实验法研究GNA对HUVEC存活率和克隆形成率的影响;应用薄层胶原建立血管内皮细胞的二维培养模型,观察GN A对于血管内皮细胞成管现象的影响;采用细胞划痕愈合和小室迁移实验考察GNA对HUVEC的迁移能力影响;Westernblot检测血管内皮生长因子(VEGF)和缺氧诱导因子(HIF-1α)蛋白的表达.结果 MTT检测结果显示,HUVEC细胞存活率和克隆形成率随GNA剂量增加而降低.GNA可抑制HUVEC细胞的迁移.还可抑制HUVEC管腔样结构形成.此外,GNA可下调HUVEC中VEGF和HIF-1α蛋白的表达.结论GNA可在体外抑制血管生成,其作用机制可能与抑制肿瘤细胞分泌的HIF-1α和VEGF有关.     

吉非替尼对非小细胞肺癌细胞株H358增殖的影响及其作用机制

目的观察吉非替尼(gefitinib)对非小细胞肺癌(NSCLC)细胞株H358增殖的影响,并对其分子机制进行探讨。方法体外培养人NSCLC细胞株H358,随机分为正常培养对照组和1μmol/L吉非替尼处理组,培养1、3、5d后,应用MTS法对2组细胞增殖速率进行分析;分别提取胞质、胞核蛋白,蛋白印迹法检测表皮生长因子受体(EGFR)的亚细胞定位变化情况;另外,对细胞中磷酸化-Akt(p-Akt)的表达进行检测,分析其对磷脂酰肌醇-3激酶(PI3K)/Akt信号通路的影响。结果 MTS结果表明,1μmol/L吉非替尼能显著抑制H358的增殖(P<0.01),并具有时间依赖性。蛋白印迹法检测结果显示,吉非替尼能够改变EGFR的亚细胞定位,减少其在胞核中的表达,此外,吉非替尼处理后H358细胞内p-Akt的蛋白表达受到抑制。结论吉非替尼能够显著抑制H358细胞的增殖,减少EGFR在细胞核中的表达,并抑制PI3K/Akt信号通路,这可能是其抗NSCLC的重要细胞及分子机制。