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1.
目的 研究细胞角蛋白(CK)19、galectin(Gal)-3、HBME-1在甲状腺不同病变表达的特点及鉴别诊断中的应用价值。方法 应用免疫组织化学EnVision法检测了21例结节性甲状腺肿(结甲)、14例毒性甲状腺肿(甲亢)、15例甲状腺滤泡性腺瘤(腺瘤)、13例滤泡性癌、13例滤泡型乳头状癌及48例经典型乳头状癌中单克隆抗体CK19、Gal-3、HBME-1的表达。结果 甲状腺病变中3种标记表达均位于细胞质;CK19、Gal-3、HBME-1的表达在甲状腺良性病变(结甲、甲亢、腺瘤)大多为弱阳性或阴性,而滤泡性癌阳性明显增加、乳头状癌(滤泡型及经典型)大多为中、强阳性,3种标记在甲状腺不同病变的阳性表达率结甲为52.4%(11/21)、9.5%(2/21)、19.0%(4/21),甲亢为50.0%(7/14)、7.1%(1/14)、7.1%(1/14),腺瘤为60%(9/15)、13.3%(2/15)、13.3%(2/15),滤泡性癌为76.9%(10/13)、61.5%(8/13)、53.8%(7/13),滤泡型乳头状癌为:100%(13/13)、84.6%(11/13)、92.3%(12/13),经典型乳头状癌为100%(48/48)、93.8%(45/48)、95.8%(46/48);在甲状腺良性病变(结甲、甲亢、腺瘤)与恶性病变(滤泡性癌、乳头状癌)间3种标记差异均有显著性(P均=0.000);同时3种标记在滤泡样病变即腺瘤、滤泡性癌和滤泡型乳头状癌间亦有显著差异(CK19:P=0.038,Gal-3:P=0.001,HBME-1:P=0.000)。结甲有9例,甲亢有7例,腺瘤有6例3种标记均不表达,滤泡性癌仅有1例,而乳头状癌(滤泡型及经典型)没有病例3种标记均不表达,同一病例有2种以上阳性表达在结甲、甲亢、腺瘤、滤泡性癌、滤泡型乳头状癌和经典型乳头状癌中分别为14.2%(3/21)、21.4%(3/14)、20.0%(3/15)、69.2%(9/13)、92.3%(12/13)、100.0%(48/48),在甲状腺良性病变与恶性病变间以及滤泡样病变间差异亦有显著性(P=0.000)。结论 CK19、Gal-3、HBME-1的检测尤其是联合检测对甲状腺病变的诊断、鉴别诊断具有较高的实用价值。  相似文献   

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目的 探讨CD147的表达对子宫颈癌细胞增殖、侵袭、迁移的影响和潜在的分子机制。方法 分析UCSC数据库BSG基因(编码CD147蛋白)在子宫颈癌中的表达,采用Log-rank test法评估各组表达的预后差异。应用Western blot法检测CD147在Siha、Hela和H8细胞中的表达,通过慢病毒转染Hela细胞下调CD147表达,并验证其转染效率。运用Western blot法检测各组细胞中p-Akt、p-mTOR、ACC1、FASN、E-cadherin和N-cadherin的表达;使用BODIPY染色和脂肪酸试剂盒检测细胞中脂肪酸含量;利用CCK-8、平板克隆和Transwell实验检测细胞增殖、侵袭和迁移能力。sh-CD147组经Akt激动剂(SC79)处理后,Western blot法检测细胞中p-Akt、p-mTOR、ACC1、FASN、E-cadherin和N-cadherin的表达;选用BODIPY染色和脂肪酸试剂盒检测细胞中脂肪酸含量;利用平板克隆实验和Transwell实验分别检测细胞增殖、侵袭和迁移能力。结果 UCSC数据库显示CD147在子宫颈癌中的表达...  相似文献   

4.
目的 探究体外LINC00847表达对乳腺癌细胞增殖、迁移和侵袭的影响.方法 应用shRNA干扰乳腺癌细胞株MCF-7和MDA-MB-231中LINC00847的表达后,qRT-PCR法检测shRNA的干扰效率.确认干扰效率后分别使用MTT法、克隆形成实验和Transwell小室实验检测干扰LINC00847后MCF-...  相似文献   

5.
目的 探讨纳美芬对神经病理性疼痛大鼠的改善作用及可能机制.方法 通过生物信息学技术分析IL-10在正常脑组织、胶质瘤表达情况以及不同级别胶质瘤表达情况;同时分析IL-10对胶质瘤病人预后影响.CCK-8方法检测IL-10对胶质瘤细胞系增殖能力影响.Transwell方法检测IL-10对胶质瘤侵袭能力影响.Western...  相似文献   

6.
细胞角蛋白7和20在卵巢转移癌中的表达   总被引:16,自引:1,他引:16  
Dai L  Song Q  Li L  Zhong D  Hui Y 《中华病理学杂志》2001,30(2):114-117
目的 观察卵巢转移癌的临床资料、病理形态和免疫组织化学改变,为鉴别卵巢转移癌与原发癌提供依据。方法 对27例卵巢转移癌(其中胃癌12例,结肠癌11例,其他4例)进行了临床和病理形态观察,同时采用免疫组织化学(SP法)对其分别进行细胞角蛋白[CK(AE1/AE3)]、细胞角蛋白7(CK7)、细胞角蛋白20(CK20)、癌胚抗原、波形蛋白、nm23抗原检测。结果 卵巢转移性胃癌12例中11例为双侧实性,卵巢转移性结肠癌11例中7例为单侧囊实性,组织学检查胃癌卵巢转移12例全部以印戒细胞癌或低分化腺癌散在分布为特征,而结肠癌卵巢转移则11例中8例与子宫内膜样癌相似,CK20阳性染色使卵巢转移性胃癌7例及结肠癌8例得到明确诊断,在转移性结肠癌中CK20有稳定的表达,卵巢转移性胃肠道癌中CK7多数阴性,癌胚抗原、波形蛋白、nm23的联合使用使转移性胃癌11例,结肠癌10例得到明确诊断,结论 CK7和CK20在鉴别来自胃肠道的卵巢转移癌中具有重要意义。当几种抗体联合使用时意义更大。  相似文献   

7.
目的:探讨蛋白磷酸酯酶2A(PP2A)在宫颈癌细胞侵袭中的作用及其可能机制。方法:常规培养Hela细胞,通过药物或基因调节PP2A水平,药物实验中将Hela细胞分为3组,即正常对照组(DMSO处理,n=6)、DES组(10nM PP2A激动剂DES处理,n=6)和OA组(10nM PP2A抑制剂OA处理,n=6);质粒转染组中将Hela细胞分为对照组(DsRed组,n=6)、wtPP2A组(n=6)和siPP2A组(n=6),按分组要求转染相应质粒。采用小室穿孔实验观察其对Hela细胞侵袭的影响;蛋白免疫印迹实验(Western Blot)观察其对MAPK信号通路的作用。结果:研究发现上调PP2A可显著抑制Hela细胞侵袭,而下调PP2A则显著促进Hela细胞侵袭;激活PP2A可去磷酸化丝裂原激活的蛋白激酶家族(p-JNK, p-p38和p-ERK MAPK)及金属蛋白酶9(MMP-9)。结论:PP2A可能通过去磷酸化MAPK信号通路下调MMP-9起调节宫颈癌细胞侵袭的作用。  相似文献   

8.
目的 探讨miR-186介导的YAP1对乳腺癌细胞增殖、迁移和侵袭的影响。方法 采用qRT-PCR和Western blot法检测miR-186、YAP1蛋白在正常乳腺细胞MDA-kb2及人乳腺癌细胞MDA-MB-231中的表达;利用Lipofectamine 2000试剂将miR-186 mimic转染至乳腺癌细胞,荧光显微镜下观察转染效率;采用CCK-8法检测乳腺癌细胞的增殖能力;细胞划痕实验检测细胞的迁移能力;Transwell细胞侵袭实验检测细胞的侵袭能力;Western blot法检测YAP1蛋白表达。双荧光素酶报告基因实验检测miR-186与YAP1的靶向关系。结果 与正常乳腺细胞相比,乳腺癌细胞中miR-186表达量显著减少(P<0.01),YAP1蛋白表达量显著增加(P<0.01)。与对照组相比,miR-186过表达可明显降低乳腺癌细胞的增殖、迁移和侵袭能力(P<0.05),同时降低了YAP1蛋白表达(P<0.01)。miR-186和野生型YAP1载体共转染细胞的荧光素酶活性显著降低(P<0.01)。结论 miR-186在乳腺癌细胞中表达下...  相似文献   

9.
自1990年编码Id蛋白的基因从鼠造血细胞株中被克隆并发现以来,大量研究显示Id蛋白具有一些癌蛋白的属性,它们通过抑制细胞分化、推进细胞周期进程、诱导细胞增殖、抑制衰老,促进细胞存活而参与肿瘤的发生与发展。尤其对Id蛋白功能“缺失/获得”的研究进一步证实,Id蛋白参与人类肿瘤进程以及肿瘤增殖、侵袭转移等恶性潜能。Id蛋白在肿瘤侵袭转移中的作用为恶性肿瘤预后估计提供了新的指标、为Id蛋白靶向肿瘤治疗策略提供新的思路。  相似文献   

10.
目的研究髓源性抑制细胞(myeloid derived suppressor cells,MDSC)与鼻咽癌细胞上皮-间质转化(epithelialmesenchymal transition,EMT)的关系及对鼻咽癌细胞侵袭转移的影响。方法用流式细胞技术检测16例鼻咽癌患者以及9例健康对照者骨髓中MDSC所占比例,并分离鼻咽癌组织中MDSC;将MDSC与鼻咽癌细胞株CNE-2共培养,观察CNE-2细胞形态学的改变;应用q RT-PCR技术从RNA水平检测共培养前后CNE-2细胞上皮-间质转化相关基因(E-cadherin,N-cadherin,Vimentin,Snail)的改变;进一步采用Western blot技术从蛋白水平检测其表达变化;继而通过transwell小室及划痕实验检测MDSC对CNE-2细胞侵袭转移能力的影响。结果鼻咽癌患者骨髓中MDSC所占比例(10.37%)明显高于健康对照者(1.65%);MDSC与CNE-2细胞共培养后,CNE-2细胞在形态学上发生EMT;q RT-PCR和Western blot分别从RNA和蛋白水平证实CNE-2细胞上皮表型的相关基因(E-cadherin)表达下调,间质表型的相关基因(N-cadherin,Vimentin,Snail)表达上调;transwell小室侵袭实验证实共培养后CNE-2细胞的侵袭能力增强;划痕实验证实共培养后CNE-2细胞的迁移能力增强。结论 MDSC通过诱导EMT促进鼻咽癌细胞的侵袭转移能力。  相似文献   

11.
目的 探讨长链非编码RNA(lncRNA)-H19对甲状腺癌细胞增殖、 侵袭和细胞周期的影响.方法 检测lncRNA-H19在癌组织、 癌旁组织、 正常人甲状腺上皮细胞TEC及甲状腺癌细胞KAT18、FTC133、BCPAP、TPC-1中的表达;检测沉默lncRNA-H19对细胞增殖、 侵袭和细胞周期的影响.结果 ln...  相似文献   

12.
目的检测肿瘤标记物—细胞角蛋白19(GK19)在肺癌的患者血清中含量。方法应用Centocor CYERA21-1放射免疫分析。结果肺癌患者血清CK19水平明显高于正常对照组,健康人CK19的平均值为0.67ng/ml,而肺腺癌(Ⅲ、Ⅳ期)CK19的阳性率为41.7%,肺鳞状上皮腺癌(Ⅲ、Ⅳ期)的阳性率为69.2%,大细胞癌为25.0%,小细胞癌为33.3%。结论肺癌患者血清中CK19含量明显高于正常组,提示其可能是肺癌诊断、预后及疗效判断的重要指标。  相似文献   

13.
层黏连蛋白是细胞外基质重要的成分之一。67 ku层黏连蛋白受体(67 ku laminin receptor,67 LR)是层黏连蛋白的一个非整合素受体。它是一种多功能蛋白,既参与核糖体的组装、成熟过程,又参与细胞的信号转导,还可作为多种病毒的细胞膜受体。可以和层黏连蛋白相互作用,调节肿瘤的增殖、黏附、微血管形成,加速细胞外基质的降解,促进肿瘤的侵袭转移,其作用机制可能与MAPK信号通路有关。67 LR在多种肿瘤中高表达,还可以作为肿瘤免疫治疗的靶标。  相似文献   

14.

Introduction and Aim

Papillary thyroid cancer (PTC) constitutes more than 90% of newly emerging differentiated thyroid cancers. Lymph node metastasis is often seen in PTC. There is a high risk of central metastasis in the presence of clinicopathological factors such as extrathyroidal extension, multifocality and lymphovascular invasion. The aim of this study is to evaluate the clinicopathological features that are effective in the development of lymph node metastasis.

Material and Method

A retrospective examination was made of the records of patients diagnosed with papillary thyroid cancer and followed up in our clinic. Patients with and without lymph node metastasis were compared in respect of demographic features such as age, gender, pathology, histopathology, tumor size, lymph node metastasis, lymphovascular invasion, multifocality, capsule invasion, extrathyroidal extension and bilaterality.

Results

Lymph node metastasis was determined in 52 of 419 papillary thyroid cancers. In the logistic regression analysis, a statistically significant relationship was determined between cervical lymph node metastasis and age <45 years (p < 0.001, OR:4.193), lymphovascular invasion (p < 0.001, OR:7.762), capsule invasion (p < 0.002, OR:3.054), extrathyroidal extension (p < 0.001, OR:6.450) and bilaterality (p < 0.001, OR: 0.217).

Conclusion

The risk of cervical lymph node metastasis was determined to be high in the presence of clinicopathological factors such as extrathyroidal extension, multifocality and lymphovascular invasion. Although lymph node metastasis does not clinically develop in all patients, knowing the risk factors related to lymph node metastasis can contribute to the evaluation of prophylactic central neck dissection in high-risk patients and follow-up of the patient in respect of recurrence.  相似文献   

15.
Src, a proto-oncogene, has been strongly implicated in the growth, progression and metastasis of a number of human cancers. Its role in lung cancer is, however, still unknown. In the present study, we assessed the expression of Src in three different human lung adenocarcinoma cell lines (PC-9, PC14PE6, A549), and explored the effect of a novel Src kinase inhibitor, M475271, on the behavior of the cell lines. The three cell lines expressed various levels of auto-phosphorylated Src. While M475271 reduced Src-phosphorylation and invasiveness of all three cell lines, it inhibited the proliferation of PC-9 and A549 cells with highly phosphorylated Src, but not PC14PE6 cells. We further examined the effect of M475271 on subcutaneous tumors and lung metastasis caused by PC-9 and/or A549 cells in NK-cell depleted SCID mice. Daily oral treatment with M475271 inhibited the growth of subcutaneous tumors with PC-9 and A549 cells via inhibition of tumor cells proliferation, VEGF production and/or vascularization in the mice in a dose-dependent manner. In the metastasis model with A549 cells, the lung weight in the M475271 (50 mg/kg)-treated group was less than that of the control group, despite no difference in the number of metastatic nodules. Our results suggest that inhibition of tyrosine kinase Src by M475271 could reduce the growth, invasion and VEGF-mediated neovascularization of lung adenocarcinoma cells, resulting in inhibition of growth of subcutaneous tumors and lung metastasis. Therefore, a novel Src tyrosine kinase inhibitor, M475271, might be helpful for controlling the progression of human lung adenocarcinoma.  相似文献   

16.
目的探讨定量RT—PCR法检测细胞角蛋白(CK19)在乳腺癌前哨淋巴结(SLN)中的表达,提高前哨淋巴结活检中微转移的检出率。方法采用常规病理检查法(HE染色)和定量RT—PCR法检测了40例乳腺癌患者SLN的CK19的表达量,同时选取10例来源于胃肠道的良性病变淋巴结作为定量RT—PCR检测的对照组。结果CK19在良性病变的淋巴结中没有表达。常规病理检查的敏感度为42.9%(9/21),假阴性为57.1%(12/21).准确率为70.0%(28/40)。定量RT—PCR法检测出常规病理未检出的微小转移病例12例,敏感度为95.2%(20/21),假阴性为4.8%(1/21),准确率为97.5%(39/40)。结论前哨淋巴结活检可有效判断乳腺癌腋淋巴结转移状态,应用定量RT—PCR法检测CK19在SLN中的表达,可提高敏感度及准确率。  相似文献   

17.
PurposeSOX12 is overexpressed in many cancers, and we aimed to explore the biological function and mechanism of SOX12 in thyroid cancer.Materials and MethodsWe first analyzed the expression of SOX12 in thyroid cancer using data in The Cancer Genome Atlas. Immunohistochemistry and qRT-PCR were performed to identify SOX12 expression in thyroid cancer tissue and cells. Thyroid cancer cells were transfected with small interfering RNA targeting SOX12, and cellular functional experiments, including CCK8, wound healing, and Transwell assays, were performed. Protein expression was examined by Western blot analysis. A xenograft model was developed to evaluate the effect of SOX12 on tumor growth in vivo.ResultsSOX12 expression was increased in thyroid cancer tissue and cells. SOX12 promoted cell proliferation, migration, and invasion and accelerated tumor growth in vivo. The expression of PCNA, Cyclin D1, E-cadherin, Snail, MMP-2, and MMP-9 was affected by SOX12 knockdown. Bioinformatic analysis showed that SOX12 could interact with the POU family. SOX12 knockdown inhibited the expression of POU2F1, POU2F2, POU3F1 and POU3F2, and SOX12 expression showed a positive correlation with POU2F1, POU3F1, and POU3F2 expression in clinical data. POU2F1 and POU3F1 were able to reverse the effect of SOX12 knockdown on thyroid cancer cells.ConclusionSOX12 affects the progression of thyroid cancer by regulating epithelial-mesenchymal transition and interacting with POU2F1 and POU3F1, which may be novel targets for thyroid cancer molecular therapy.  相似文献   

18.
目的探讨卵巢癌基因HE4对卵巢癌细胞增殖及侵袭能力的影响。方法构建针对HE4基因的PcDNA3.1/HE4载体.脂质体法介导PcDNA3.1/HE4载体转染人浆液性卵巢癌细胞系HO8910,WESTERN—BLOT检测转染前后细胞内HE4蛋白的表达效果。用四甲基偶氮唑蓝(MTT)比色法、平板克隆形成实验观察HE4基因对细胞增殖能力的影响,经细胞粘附实验、体外侵袭力实验比较转染前后细胞侵袭能力的变化。结果Western-blot结果显示PcDNA3.1/HE4载体成功转染HO8910细胞并显著提高该细胞HE4基因的表达,细胞增殖能力较前无明显变化,侵袭能力明显下降。结论通过增强HE4基因表达,可降低其侵袭能力,有望成为卵巢癌基因治疗的新的候选基因。  相似文献   

19.
目的 探讨 miR-766-5p 对胶质瘤细胞增殖、 侵袭与凋亡的影响。 方法 Targetscan 预测 miR-766- 5p 与基质金属蛋白酶-7 (MMP-7) 靶向关系并进行验证, 构建 miR-766-5p 过表达、 MMP-7 过表达和 miR766-5p + MMP-7 过表达胶质瘤 U87 细胞系, BrdU 染色、 流式细胞法、 Transwell 实验、 Western 印迹分别检 测细胞增殖、 凋亡、 侵袭及相关蛋白表达。 结果 miR-766-5p 可靶向抑制 MMP-7 表达, miR-766-5p 过表达 可抑制 Ki67、 增殖细胞核抗原 (PCNA)、 Wnt1、 β-链蛋白 (β-catenin) 蛋白表达以抑制 U87 细胞增殖和侵 袭, 可促进 Bcl 相关 X 蛋白 (Bax) / B 细胞淋巴瘤/ 白血病-2 (Bcl-2) 蛋白表达以促进细胞凋亡, MMP-7 过表达可以缓解 miR-766-5p 过表达所致 U87 细胞增殖、 侵袭抑制作用和凋亡促进作用。 结论 miR-766-5p 可靶向抑制 MMP-7 表达抑制 U87 细胞胞增殖、 侵袭和促细胞凋亡。  相似文献   

20.
Comparison of the sensitivity of cytological and molecular genetic methods (19 specimens of lymph nodes from 8 patients with breast cancer and suspected metastases obtained by transcutaneous fine-needle aspiration biopsy under ultrasound guidance) showed that molecular genetic and cytological studies produced true results in 95 and 84% specimens, respectively. True-positive and true-negative results were obtained in 8 and 7 patients, respectively. Expression of cytokeratin 19 was detected in 3 specimens with negative cytological results and confirmed metastases in lymph nodes. Our results indicate that molecular genetic diagnostic study for lymph node metastases should be used in small amounts of biopsy specimens, presence of marginal metastases in lymph nodes, and negative results of repeated cytological examination. __________ Translated from Byulleten’ Eksperimental’noi Biologii i Meditsiny, Vol. 145, No. 1, pp. 97–99, January, 2008  相似文献   

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