共查询到20条相似文献,搜索用时 15 毫秒
1.
目的检测癌睾丸抗原(CTA)MAGE-A3、AKAP-4在非小细胞肺癌(NSCLC)的表达及意义。方法应用间接酶免疫组化技术检测MAGE-A3、AKAP-4在45例肺癌组织中的表达情况,分析其与组织类型及淋巴结转移的相关性。结果 45例标本中MAGE-A3、AKAP-4在NSCLC中的敏感度分别为62.2%和73.3%,联合两种抗原可显著提高敏感性,为91.1%(P〈0.05);MAGE-A3、AKAP-4在鳞癌中的表达率显著高于腺癌,与性别、年龄、淋巴结有无转移不相关。结论 MAGE-A3、AKAP-4是较好的NSCLC辅助诊断指标,联合应用两种蛋白可提高诊断敏感性。 相似文献
2.
目的探讨雷公藤甲素(TP)通过调控趋化因子受体4(CXCR4)基因表达对人非小细胞肺癌(A549)细胞增殖和凋亡的影响。方法实验分为4组:对照组、TP组(100 nm/L TP处理细胞)、CXCR4+TP组(转染质粒及TP处理细胞)和NC+TP组(转染空载质粒及TP处理细胞)。RT-qPCR和Western blot检测CXCR4表达以及转染效果;MTT法检测细胞增殖;AnnexinⅤ-FITC/PI双染色法检测细胞凋亡;Western blot检测增殖及凋亡相关蛋白表达。结果雷公藤甲素能够抑制A549细胞中CXCR4 mRNA和蛋白的表达(P<0. 05)。雷公藤甲素可抑制A549细胞增殖,诱导其凋亡(P<0. 05)。转染pc DNA-CXCR4能够上调CXCR4 mRNA和蛋白的表达(P<0. 05)。上调CXCR4的表达能够部分逆转雷公藤甲素对A549细胞增殖抑制和凋亡诱导的作用(P<0. 05)。结论雷公藤甲素可能通过下调CXCR4的表达抑制A549细胞增殖,诱导细胞凋亡。 相似文献
3.
Proliferating cell nuclear antigen (PCNA) expression in formalin-fixed tissue of non-small cell lung carcinoma 总被引:3,自引:0,他引:3
An immunohistochemical study of non-small cell lung carcinoma using PC10, a monoclonal antibody against PCNA, was performed on tissues routinely processed with formalin fixation and paraffin embedding. The PCNA labelling index and mitotic index were determined from sections of these tissues. Tumours showed a high mean PCNA labelling index of 53.3%. The mean mitotic index was 10.3/1000 cells. Inter-examiner agreement of mitotic counting was good. A linear correlation between the PCNA labelling index and mitotic index was demonstrated (r = 0.71, P less than 0.00001). It is concluded that immunohistochemical nuclear labelling with anti-PCNA on routinely processed tissue is a simple technique for the assessment of proliferation in non-small cell lung carcinoma. 相似文献
4.
目的检测非小细胞肺癌患者体细胞表皮生长因子受体(EGFR)基因第19和21外显子突变情况并探讨其临床病理联系。方法用酚.氯仿法抽提66例NSCLC患者手术标本的基因组DNA,采用PCR技术扩增EGFR基因第19和21号外显子,从正反两个方向对扩增片段进行DNA测序和分析,并寻找EGFR突变与患者115床病理特征之间的联系。结果66例NSCLC患者中有11例(16.7%)存在EGFR杂合性体细胞突变,其中7例为第19外显子缺失突变,4例为第21外显子替代突变。女性患者突变率(9/34,26,5%)高于男性患者突变率(2/32,6.3%),腺癌患者突变率(10/43,23,3%)高于鳞癌(0/13)和腺鳞癌患者(1/10),吸烟者与非吸烟者突变率之间差异无统计学意义。伴细支气管肺泡癌成分的腺癌患者EGFR突变率(6/11),高于无细支气管肺泡癌成分的腺癌患者(4/32,12.5%)。结论EGFR突变率以伴细支气管肺泡癌成分的腺癌和女性较高,更有利于适宜靶向治疗患者的临床筛选。 相似文献
5.
目的:探讨CARMA3基因在人结肠癌细胞HCT116生长和侵袭转移中的作用及其机制。方法:选取高表达CARMA3的人结肠癌细胞株。应用慢病毒技术敲减CARMA3基因,puromycin筛选后构建稳定转染的HCT116-sh CARMA3细胞株。Real-time PCR和Western blot鉴定mRNA和蛋白表达的抑制情况。WST-1法和RTCA S16系统分析细胞增殖情况。集落形成实验观察集落形成。流式细胞术检测细胞周期。显微镜下观察上皮-间充质转化(EMT)形态变化。划痕实验和Transwell实验检测细胞迁移与侵袭能力的改变。Western blot分析相关分子变化,探讨可能机制。结果:4株人结肠癌细胞株中HCT116细胞的CARMA3 mRNA和蛋白表达量最高,构建稳定沉默CARMA3的HCT116-sh CARMA3细胞株,其中HCT116-sh CARMA3-93细胞中CARMA3的mRNA和蛋白受抑制最明显,将其作为细胞模型。相比于对照组,HCT116-sh CARMA3-93细胞形态发生EMT逆转,其增殖、集落形成、迁移和侵袭能力明显下降(P0.01)。HCT116-sh CARMA3-93的G_0/G_1细胞所占比例明显升高,S期细胞比例相应下降(P0.05)。信号通路分子Bcl10和NF-κB表达明显下调,MALT-1变化不明显;细胞周期相关蛋白cyclin D1显著下调,cyclin A表达略有下降;侵袭转移相关分子MMP-2和MMP-9的表达下调,MMP-7未见改变,TIMP-1和TIMP-2的表达上调;EMT相关分子E-cadherin的表达水平升高,N-cadherin、Snail、Slug和Twist的表达水平呈不同程度降低。结论:CARMA3可通过改变细胞周期和侵袭转移分子的表达、调控EMT来影响结肠癌细胞HCT116的生长和侵袭转移。这可能与NF-κB信号通路发生改变有关。 相似文献
6.
目的 检测非小细胞肺癌(non-small cell lung carcinoma,NSCLC)中凋亡相关蛋白与神经内分泌(neuroendocrine,NE)分化的表达,探讨其相关性.方法 采用免疫组织化学染色方法,检测NSCLC组织中survivin,bcl-2蛋白与NSE、Syn及CgA等蛋白的表达,并进行相关性作统计学分析.结果 113例NSCLC中,survivin、bcl-2阳性表达率分别为88.5%、58.4%;NSE、Syn和CgA蛋白阳性表达率分别为53.6%、6.2%和26.5%.伴NE分化者占21.2%,其survivin蛋白表达明显高于不伴NE分化组,差异有统计学意义.结论survivin、bcl-2蛋白表达上调可能在NSCLC发生发展中起重要作用.伴NE分化的NSCLC与表达阴性者相比,以survivin为代表的抗凋亡能力明显增强. 相似文献
7.
Apoptosis occurs independently of bcl-2 and p53 over-expression in non-small cell lung carcinoma 总被引:6,自引:0,他引:6
Certain oncogenes and tumour suppressor genes are known to modulate apoptosis. To investigate whether over-expressed bcl-2 and abnormally stabilized p53 are associated with reduced apoptosis in paraffin sections of non-small cell lung carcinoma, apoptotic, mitotic, and Ki-67 labelling indices were determined and correlated with bcl-2 and p53 immunoreactivity in 54 squamous cell carcinomas and 22 adenocarcinomas. Nineteen squamous cell carcinomas (35.2%) showed over-expression of bcl-2, but all 22 adenocarcinomas were bcl-2 negative. Thirty-seven squamous cell carcinomas (68.5%) and 13 adenocarcinomas (59.1%) showed p53 over-expression. Apoptotic tumour cells were identified among p53 positive and bcl-2 positive tumour cells. There was a significant linear correlation between apoptotic indices and mitotic indices. bcl-2 over-expression and p53 over-expression were not associated with attenuated apoptosis, or altered mitotic or Ki-67 labelling indices in either tumour type. Neither bcl-2 nor p53 was of prognostic significance. These results suggest that apoptosis in non-small cell lung carcinoma occurs independently, and is not modulated primarily by, bcl-2 or p53. It is likely that the effects on apoptosis of bcl-2 and p53 are countered by those of other oncogene products and/or additional factors that regulate apoptosis in vivo 相似文献
8.
目的:研究乙酰肝素酶(HPA)、肝细胞生长因子(HGF)、血管内皮生长因子(VEGF)在非小细胞肺癌(NSCLC)组织中的表达及其与临床特征之间的关系;并分析三者表达的相关性。方法:采用免疫组织化学检测45例非小细胞肺癌组织及10例正常组织中HPA、HGF及VEGF的表达水平。结果:非小细胞肺癌组织中HPA、VEGF的表达与正常组织表达、TNM分期有关。HGF的表达与正常组织的表达有关。三者中任意两者间在非小细胞肺癌组织中的表达均呈正相关性。结论:HPA、HGF与VEGF参与了非小细胞肺癌的发生、发展、浸润与转移;在非小细胞肺癌的发展过程中,三者之间可能存在协同作用。 相似文献
9.
IntroductionMicroRNAs (miRNAs) are endogenous small noncoding RNA molecules involved in modulation of cancer progression. Here, we investigated the possible role of miR-144 in non-small cell lung cancer (NSCLC) development.Material and methodsThe expression of miR-144 and TLR2 in NSCLC tissue and cell lines was determined by quantitative real-time PCR (qPCR). The TargetScan database was used to predict potential target genes of miR-144. Luciferase assay was used to verify the interaction between TLR2 and miR-144. TLR2 protein expression was measured by western blot. The secretion of interleukin (IL)-1β, IL-6 and IL-8 in A549 cells was detected by an ELISA kit. Cell migration and invasion were evaluated by wound healing assay and transwell assay, respectively.ResultsOur results showed that miR-144 was downregulated in NSCLC tissue and cell lines when compared with the normal tissues and cell line (p < 0.05). The protein level of TLR2 in NSCLC tissue and cell lines was significantly higher than that in normal lung tissues. Dual luciferase reporter gene assay showed that miR-144 could bind to the 3ʹUTR of TLR2 specifically. Up-regulation of miR-144 significantly decreased the expression of TLR2. Up-regulation of miR-144 or down-regulation of TLR2 could decrease cell migration, invasion and secretion of IL-1β, IL-6 and IL-8 in A549 cells. Moreover, overexpression of TLR2 rescued the inhibitory effects of miR-144 on migration, invasion and inflammatory factor secretion of A549 cells.ConclusionsmiR-144 could inhibit the migration, invasion and secretion of IL-1β, IL-6 and IL-8 through downregulation of TLR2 expression in A549 cells. 相似文献
10.
11.
12.
13.
目的研究不同病理类型和病理分期的非小细胞肺癌组织中SOX4基因序列突变情况,探讨SOX4基因在肺癌发生过程中的作用。方法PCR扩增肺癌及癌旁组织SOX4基因HMG-box,并对经单链构象多态性分析有差异的20例病例进行测序。DNA及氨基酸序列比较利用Clustal和DNAStar软件。结果90例肺癌组织标本中,有18例发生碱基突变。其中,鳞癌有7例,腺癌5例,腺鳞癌混合型6例,对照的癌旁组织中未检测出突变。临床Ⅱ、Ⅲ期的突变率明显高于Ⅰ期。结论SOX4基因突变与肺癌肿瘤的病理类型无关,但与其病理分期有很大关系,提示SOX4基因突变可能与肺癌的发展和转移有某种关系,为探索SOX基因突变与人类肿瘤发生之间的关系提供了分子依据。 相似文献
14.
Distinct angiogenic and non-angiogenic growth patterns of lung metastases from renal cell carcinoma 总被引:1,自引:0,他引:1
AIMS: We have recently evaluated a classification of non-small-cell lung cancer based upon the presence of an angiogenic or a non-angiogenic growth pattern. The aim of the present study was to test the hypothesis that lung metastases of clear cell renal cell carcinoma (RCC) can grow without eliciting angiogenesis and give rise to the same set of growth patterns. METHODS AND RESULTS: Tissue sections of 24 patients with lung metastases from clear cell RCC were analysed. Haematoxylin and eosin and reticulin staining were performed to evaluate growth pattern. Double-labelling with antibodies to CD34 and proliferating cell nuclear antigen (PCNA) was performed to determine the endothelial cell proliferation fraction (ECPF) and the microvessel density (MVD). Three growth patterns were observed. In the destructive growth pattern (54%), the architecture of the lung was not preserved. In the alveolar (33%) and interstitial growth patterns (13%), the normal lung parenchyma was preserved within the metastases. MVD was higher in the destructive than in the alveolar growth pattern (P = 0.009). ECPF was higher in the destructive (mean 31.1 +/- 22.7%, median 30.0) than in the alveolar growth pattern (mean 3.6 +/- 2.8%, median 3.2; P = 0.005). CONCLUSIONS: The present study demonstrates that highly angiogenic primary tumours can give rise to non-angiogenic metastases. This type of metastasis may be resistant to antiangiogenic therapy. 相似文献
15.
人非小细胞肺癌中KGF mRNA的表达及意义 总被引:1,自引:0,他引:1
目的研究人非小细胞肺癌(non-small cell lung cancer,NSCLC)角化细胞生长因子(keratinocyte growth factor,KGF)mR-NA的表达,及其在NSCLC发生过程中肿瘤细胞与间质细胞间的相互作用。方法采用原位杂交和免疫组化法检测KGF mR-NA与Ki-67在50例NSCLC的表达,并与正常组织对照。结果KGF mRNA的表达除在NSCLC某些实质细胞内观察到外,主要见于NSCLC的纤维母细胞和血管平滑肌细胞胞质。肿瘤组织KGF mRNA表达的阳性率86%明显高于正常肺组织的24%(P<0·05)。有淋巴结转移者比无淋巴结转移者的表达更强,且与肺癌的分化相关,分化程度越低,KGF mRNA表达越强。在50例肺癌中Ki-67表达的分布与KGF mRNA相似。结论NSCLC存在KGF mRNA高表达。KGF可通过旁分泌、自分泌两种方式发挥作用。KGF可能与NSCLC的发生有一定的相关性。 相似文献
16.
María Jesús Fernández Aceñero MD PhD Cristina Díaz del Arco CDdA MD Carme Dinarés CD MD PhD Tania Labiano TL MD Eva Tejerina ET MD PhD Mª José Bernabé MJ B MD Elena Forcen EF MD Melchor Saiz-Pardo MSP MD Pablo Pérez PP MD Maria D. Lozano MDL MD PhD 《Diagnostic cytopathology》2023,51(1):26-35
Lung carcinoma remains one of the most frequent and aggressive human neoplasms. Fortunately, in the last decades, the increasing knowledge of the molecular mechanisms leading to cancer development has allowed the use of targeted therapies with improvement of prognosis in many patients. Clinical management has also changed after the introduction of endobronchialultrasonographic bronchoscopy that allows a conservative staging of lung tumors, avoiding the need of mediastinoscopy for lymph node staging. Lung pathologists and cytopathologists are facing the challenge of giving the more comprehensive prognostic and predictive information with ever smaller tissue or cytological samples. The aim of this review is to summarize the molecular testing for non-small cell lung carcinoma and how pathologists can contribute to the patient's outcome with a conscious management of biological samples. 相似文献
17.
目的:探讨非小细胞肺癌(non-small cell lung cancer,NSCLC)胸水细胞块在间变性淋巴瘤激酶(anaplastic lymphoma kinase,ALK)融合基因检测中的临床价值。方法:采用突变扩增系统PCR(ARMS-PCR)法检测215例NSCLC细胞块和404例NSCLC组织块中ALK基因的三类融合类型,并检测细胞块同时送检组织块的患者74例的一致性。结果:细胞块ALK基因融合阳性26例,阳性率12.09%(26/215);组织块ALK基因融合阳性25例,阳性率6.19%(25/404);74例有组织块对照的细胞块ALK融合基因结果一致性有67例,一致率达90.54%(67/74),其中细胞块ALK融合基因的阳性率14.86%(11/74),组织块阳性率18.92%(14/74)。结论:NSCLC胸水细胞块ALK融合基因的阳性率略高于组织块;有恶性胸水的NSCLC患者原发灶组织发生ALK融合基因阳性的概率较高。 相似文献
18.
Akyürek N Memiş L Ekinci O Köktürk N Oztürk C 《Virchows Archiv : an international journal of pathology》2006,449(2):164-170
Survivin is an inhibitor of apoptosis protein, which is overexpressed in many carcinomas, including lung carcinoma. The aim of this immunohistochemical study was to investigate the role of survivin in the early steps of lung carcinogenesis and non-small cell lung carcinomas (NSCLC), and its relationship with expression of p53 protein, a tumor suppressor gene involved in cell cycle control. In the normal bronchial epithelium, low-grade atypical adenomatous hyperplasia (AAH) and non-neoplastic lung parenchyma adjacent to tumor, survivin was found completely negative. Expression of survivin was detected in the areas of squamous metaplasia and dysplasia as well as high-grade AAH lesions adjacent to tumor. Survivin was expressed in 50 (64%) and p53 in 41 (53%) NSCLC. Survivin expression was significantly correlated with lymph node metastasis (p=0.02). There was no correlation between survivin and p53 expression. The patients with expression of survivin had significantly worse prognosis (Log-rank test, p=0.003). Multivariate Cox regression analysis showed TNM stage (p<0.001) and survivin expression (p=0.003) as independent prognostic indicators. In conclusion, survivin expression might be an early step in lung carcinogenesis. Survivin expression might also be used as a prognostic indicator predicting the worse outcome in NSCLC, and might be a novel target for the treatment of patients with preinvasive lesions of lung and NSCLC. 相似文献
19.
目的:探讨非小细胞肺癌胸水细胞块在间充质上皮转化因子受体(c-mesenchymal-epithelial transition,c-MET)基因扩增检测中的临床价值。方法:采用RT-PCR法检测215例非小细胞肺癌细胞块和404例非小细胞肺癌组织块中c-MET基因扩增,并检测细胞块同时送检组织块的患者74例的一致性。结果:细胞块c-MET基因扩增31例,扩增率14.42%(31/215);组织块c-MET基因扩增35例,扩增率8.66%(35/404);74例有组织块对照的细胞块c-MET结果一致性有68例,一致率达91.89%(68/74),其中细胞块c-MET基因扩增率12.16%(9/74),组织块扩增率17.57%(13/74)。结论:非小细胞肺癌胸水细胞块c-MET的扩增率略高于组织块;有恶性胸水的非小细胞肺癌患者原发灶组织发生c-MET扩增的概率较高。 相似文献
20.
Bao-Yi Zhang Yan-Ming Wang Hai Gong Hui Zhao Xiao-Yan Lv Guang-Hui Yuan Shao-Rong Han 《International journal of clinical and experimental pathology》2015,8(1):25-37
The development of novel antitumor drugs for the treatment of non-small cell lung carcinoma NSCLC is imperative in order to improve the efficacy of lung cancer therapy and prognosis. In the current study, we demonstrated the antitumor activity of isorhamnetin and its combinations with cisplatin and carboplatin against A-549 lung cancer cells. In order to assess the anticancer enhancing effect of isorhamnetin on cisplatin and carboplatin, A-549 cells were treated with isorhamnetin, cisplatin, carboplatin and their combinations and cell viability, cell apoptosis, cell cycle arrest as well as loss of mitochondrial membrane potential were evaluated by MTT assay, flow cytometry, confocal microscopy and fluorescence microscopy. The effect of the drugs on cancer cell migration, microtubule depolymerization as well activation of caspases was also studied. The results revealed that, as compared to single drug treatment, the combination of isorhamnetin with cisplatin and carboplatin resulted in greater effect in inhibiting cancer cell growth and inducing apoptosis. Combination of isorhamnetin with cisplatin and carboplatin resulted in more potent apoptosis induction as revealed by fluorescence microscopy using AO/PI double staining. Isorhamnetin and its combinations also triggered microtubule distortion and depolymerization. The combination of isorhamnetin with cisplatin and carboplatin increased the number of cells in G2/M phase dramatically as compared to single drug treatment. Moreover, isorhamnetin and its combinations with known anticancer drugs induced disruption of the mitochondrial membrane potential as well as activation of caspases 3, 9 and poly-(ADP-ribose) polymerase in A-549 cells. Isorhamnetin as well as its combinations with cisplatin and carboplatin resulted in inhibition of cancer cell migration significantly. Results of the current study suggest that isorhamnetin combinations with cisplatin and carboplatin might be a potential clinical chemotherapeutic approach for NSCLC. 相似文献