食管鳞癌组织中survivin和caspase-3表达的预后意义及其与热休克蛋白表达的关系

目的探讨食管鳞癌组织中survivin和caspase3表达的预后意义及其与HSP27、HSP70表达的关系。方法采用流式细胞术测定临床病理特征相同但术后生存时间明显不同(≤1年和≥5年)的101例食管鳞癌患者肿瘤组织中,survivin和caspase3的表达情况,分析survivin和caspase3表达与食管鳞癌临床病理特征、预后的关系,以及与HSP27、HSP70表达的关系。结果短期生存组食管鳞癌组织中,survivin阳性标记细胞平均荧光强度为6.79±2.11,明显高于长期生存组(5.00±0.77);两组caspase3阳性标记细胞平均荧光强度分别为5.12±0.67和5.07±0.77,差异无统计学意义(P>0.05)。长期生存组survivin强阳性表达率为31.6%,明显低于短期生存组(54.0%,P=0.029);而caspase3在长期生存组的强阳性表达率为68.4%,明显高于短期生存组(47.6%,P=0.042)。caspase3的表达与食管鳞癌患者的年龄、肿瘤长度有关,与其他临床病理特征无关;survivin表达与各临床病理特征均无关(P>0.05)。Logistic回归分析显示,survivin和caspase3表达是食管鳞癌预后的独立影响因素。survivin和caspase3表达与HSP27、HSP70表达无关(P>0.05)。结论survivin和caspase3是食管鳞癌预后的独立影响因素。食管鳞癌组织中survivin和caspase3表达与HSP27和HSP70表达均无关。     

NK细胞及DCs在肺鳞癌组织中的浸润与预后关系的研究

目的 研究肺鳞癌组织中NK细胞和DCs浸润与预后的关系.方法 采用免疫组化S-P法,分别用单克隆CD57抗体和S-100抗体标记NK细胞和DCs,检测肺鳞癌组织中浸润NK细胞和DCs的数量,分别比较NK细胞和DCs浸润的程度与肺鳞癌患者术后生存时间的关系.结果 长期生存组中NK细胞、DCs浸润的密度为(23.3±12.2)/HPF和(7.6±3.3)/HPF,均高于短期生存组的(9.0±11.9)/HPF和(2.9±1.2)/HPF(P=0.027,P=0.016),高浸润的NK细胞和DCs组中,平均术后生存时间分别为45.3个月和50.5个月,显著高于低浸润的NK和DCs,分别为31.9和25.6个月(P=0.032,P=0.006).结论 在肺鳞癌中,NK细胞和DCs在肿瘤组织中的浸润数量与肿瘤患者的预后呈正相关,可作为判断肺鳞癌预后的指标之一,两者联合检测意义较大,但两者不是影响预后的独立因素.     

MMP-7在食管癌组织中的表达及其意义

目的探讨MMP-7表达与食管癌生物学行为的关系.方法采用免疫组化SABC法检测MMP-7在食管鳞癌中的表达.结果在正常食管鳞状细胞MMP-7呈阴性表达;在食管癌组织中主要表达于癌细胞膜和胞质中,间质细胞中无表达,在食管癌中共阳性表达率为43.4%(33/76);MMP-7表达与食管癌淋巴结转移、临床分期、静脉侵犯和浸润深度有关(P<0.05);与性别、年龄、病理类型、病理分化无关(P>0.05).结论 MMP-7在食管鳞癌进展中有重要作用,可能是1个独立预后指标.常规检测其在食管鳞癌中的表达,有助于食管癌治疗和预后的判断.     

食管鳞状细胞癌热休克蛋白27、70表达及临床意义

目的:探讨食管鳞状细胞癌热休克蛋白27、70(HSP27、70)表达及临床意义.方法:应用SP免疫组化方法,检测10l例食管鳞状细胞癌组织中HSP27、70的表达.根据临床病理资料和随访结果,对比分析HSP27和HSP70在临床病理特征相同、但术后生存时间明显不同的两组病例(长期生存组38例:术后生存5年以上;短期生存组63例:术后1年内死亡)中的表达情况,判定HSP27、70的表达与食管鳞状细胞癌临床病理特征及预后的关系.结果:HSP27在101例食管鳞状细胞癌中总的阳性表达率为88.1%(89/101),其中长期生存组总的阳性表达率为94.7%,强阳性表达率为81.6%,均明显高于短期生存组(84.1%和54.0%,P＜0.05).HSP70在101例中总的阳性表达率为96.0%(97/101),其中长期生存组总的阳性表达率和强阳性表达率分别为97.4%和68.4%,短期生存组分别为95.2%和76.2%,x2检验显示两组无显著性差异.HSP27和HSP70的表达与临床病理特征不相关(P＞0.05).Logistic回归分析显示HSP27的表达与食管鳞状细胞癌预后有关(P＜0.01),而HSP70的表达与食管鳞状细胞癌预后无关(P＞0.05).结论:HSP27是食管鳞状细胞癌预后的独立因素,可作为判断食管鳞状细胞癌预后的重要生物指标之一.HSP70的表达与食管鳞状细胞癌预后无关.     

NK/T细胞浸润对肺鳞癌患者生存与预后的影响

背景与目的:机体组织中自然杀伤细胞和细胞毒T淋巴细胞是构成机体细胞免疫的主导成分,对肿瘤组织必然有影响.本研究探讨NK/T细胞在肺鳞癌组织中的浸润程度及对患者生存与预后的影响.方法:将CD8作为细胞毒T淋巴细胞(CTL)的标记物,CD56作为自然杀伤细胞(NK)的特异性标记物,应用免疫组织化学方法检测肿瘤组织中NK/T细胞的分布和浸润情况.结果:68例肺癌中,CTL无/轻度浸润的者39例,5年生存率为18%;显著浸润者29例,5年生存率为42%;NK细胞无/轻度浸润者46例,5年生存率为14%,显著浸润者22例,5年生存率为45%;NK/T无轻度浸润者48例,5年生存率为33%,均显著浸润的20例,5年生存率为54%.经Log-rank检验,NK/T显著浸润组5年生存率显著高于无/轻度浸润组,差异有显著性(X2=18.62,P=0.00).结论:肺鳞癌组织中NK/T细胞显著浸润组的预后和生存时间明显优于轻度浸润组.其机制与机体细胞免疫有关.     

AGGF1和HIF-1α及VEGF表达与食管鳞癌放疗预后相关性研究

目的 食管癌是一种常见的上消化道恶性肿瘤,放射治疗是食管癌的主要治疗方法之一.本研究旨在探讨食管鳞癌组织中AGGF1和HIF-1α及VEGF的表达,及其与食管鳞癌临床病理特征、放疗疗效及预后的相关性.方法 采用免疫组化SP法,检测新疆医科大学附属肿瘤医院胸腹放疗科2011-01-01-2015-01-01收治的79例食管鳞癌和20例正常食管组织中AGGF1、HIF-1α和VEGF的表达,结合临床病理特征和随访资料进行相关分析.结果 79例食管鳞癌中AGGF1(x2=18.975,P＜0.001)、HIF-1α(x2 =26.884,P＜0.001)和VEGF(x2=22.702,P＜0.001)的表达显著高于20例正常食管组织中的表达.食管鳞癌中AGGF1(x2=8.134,P=0.004)和VEGF(x2 =5.175,P=0.023)的表达与淋巴结转移密切相关;HIF-1α的表达与临床分期(x2=5.882,P=0.015)、淋巴结转移(x2=7.712,P=0.005)和浸润深度(x2 =5.538,P=0.019)密切相关.食管鳞癌中VEGF和HIF-1α的表达呈正相关,r=0.333,P=0.003;AGGF1和VEGF的表达呈正相关,r=0.790,P＜0.001.放疗近期疗效与HIF-1α的表达呈负相关,r=-0.246,P=0.029.AGGF1(P=0.170)和VEGF(P=0.229)阳性表达组OS短于阴性组;HIF-1α阳性表达组OS显著短于阴性组,P=0.013.Cox多因素回归分析显示,HIF-1α阳性表达(P=0.002)、浸润深度(P=0.005)和临床分期(P＜0.001)是食管鳞癌患者生存预后的独立因素.结论 AGGF1,HIF-1α及VEGF在食管鳞癌组织中高表达,并与食管鳞癌临床病理特征密切相关,三者高表达可能对食管鳞癌的放疗疗效和生存预后有影响,可为提高食管鳞癌的放疗效果和改善生存预后提供新的思路和方法.     

肺癌血管内皮生长因子的表达及其临床意义

目的探讨血管内皮生长因子(VEGF)在人肺癌组织中的表达及其与微血管密度(MVD)、肿瘤复发和转移以及患者预后的关系.方法应用免疫组化的方法检测42例肺癌组织中MVD和VEGF表达的情况.结果VEGF在肺癌组织中的阳性表达率为81.0%;VEGF阳性表达组的肺癌组织平均MVD为(45.68±9.23)/每高倍视野,而阴性表达组的MVD为(34.58±10.22)/每高倍视野,两组之间的差异具有显著性(P＜0.01);VEGF的表达水平与肿瘤复发和转移呈正相关(P＜0.01),与术后生存时间呈负相关(P＜0.05).结论VEGF能促进肺癌组织中微血管的形成,因而在肺癌的复发和转移中起重要作用;VEGF可作为判断肺癌患者临床预后的参考指标.     

食管鳞癌组织中TIM-3、FOXA2表达与其临床病理特征及预后的关系研究

目的 探讨食管鳞癌组织中T细胞免疫球蛋白黏蛋白分子3(TIM-3)、叉头框蛋白A2(FOXA2)表达与其临床病理特征及预后的关系。方法 选取87例食管鳞癌患者(食管鳞癌组)、50例慢性食管炎患者(对照组)为研究对象。分别比较食管鳞癌组与对照组、不同临床病理特征食管鳞癌患者及不同预后食管鳞癌患者TIM-3、FOXA2表达;采用Kaplan-Meier生存曲线进行生存分析,应用Cox比例风险回归模型分析TIM-3、FOXA2表达与食管鳞癌预后的关系。结果 食管鳞癌组TIM-3阳性表达率高于对照组,FOXA2阳性表达率低于对照组(P<0.05);不同TNM分期、有无淋巴结转移及不同浸润深度的食管鳞癌患者TIM-3、FOXA2表达比较,差异有统计学意义(P<0.05);食管鳞癌组随访期间生存68例,死亡19例,死亡患者TIM-3阳性表达率高于生存患者,FOXA2阳性表达率低于生存患者(P<0.05);Kaplan-Meier生存曲线显示,TIM-3、FOXA2阴性表达患者总生存率较阳性表达患者高(P<0.05);Cox单因素回归分析显示,TNM分期、淋巴结转移、浸润深度...     

口腔癌VEGF-CmRNA表达和血管及淋巴管生成与淋巴道转移关系的研究

背景与目的VEGF-C与癌周的淋巴管血管生成以及肿瘤的淋巴道转移可能有密切的关系,本研究探讨口腔鳞癌组织血管、淋巴管密度与VEGF-CmRNA表达及淋巴道转移的关系.方法VEGF-C逆转录PCR(RT-PCR),血管、淋巴管酶组化染色、光镜及图像分析观察血管、淋巴管总体面数密度(TNa).结果VEGF-CmRNA表达阳性的淋巴管TNa(26.42±5.85)明显高于阴性淋巴管TNa(17.34±6.48)(P<0.01);VEGF-CmRNA表达阳性的血管TNa(35.16±15.55)略高于阴性的血管TNa(33.49±13.73)(P>0.05).淋巴结转移组血管TNa(44.19±14.29)比无淋巴结转移组TNa(30.61±11.82)增加(P<0.01)、淋巴结转移组淋巴管TNa(30.67±5.76)比无淋巴结转移组TNa(21.94±5.84)增加(P<0.01).结论VEGF-C主要介导了癌周淋巴管生成,对血管生成有一定影响;血管、淋巴管密度的同时增加可能与VEGF、VEGF-C及其受体的协同表达有一定关系.     

食管鳞癌组织中锌α2糖蛋白的表达及其临床意义

目的 探讨食管鳞癌组织中ZAG蛋白的表达及其临床意义.方法 采用免疫组化法检测85例食管鳞癌组织和对应的正常食管黏膜组织中ZAG蛋白的表达,并分析ZAG蛋白表达与食管鳞癌患者预后之间的关系.结果 ZAG蛋白表达主要定位于细胞质中,其在食管鳞癌组织中表达的阳性率为38.8%(33/85),显著低于正常食管黏膜组织的90.6%(77/85),差异有统计学意义(χ2=49.867,P<0.001).ZAG蛋白表达与食管鳞癌患者的组织学分级、TNM分期和淋巴结转移关系密切(P<0.05),但与患者的性别、年龄无关(P>0.05).ZAG蛋白高表达的食管鳞癌患者生存时间显著长于ZAG低表达的食管鳞癌患者(P<0.05).结论 ZAG在食管鳞癌发生、发展中发挥极其重要的作用,并可能与食管鳞癌患者的预后密切相关,因而可能成为食管鳞癌预后的分子标记.     

Prognostic value of intratumoral natural killer cells in gastric carcinoma

BACKGROUND: Natural killer (NK) cells are a group of effector cells that act nonspecifically against tumor cells. The correlation between intratumoral NK cell infiltration and clinicopathologic features remains unclear. METHODS: The authors selected 146 patients with gastric carcinoma who underwent gastrectomy at Kagoshima University Hospital between 1985-1995. Immunohistochemical staining with the CD57 antibody was performed for the evaluation of NK cell infiltration. A total of 25 areas containing CD57 positive cells were selected and the number of NK cells were counted (magnification, x200). The patients were divided into 2 groups: patients with a high level of NK infiltration (n = 39) (>25 NK cells/25 high-power fields [HPF]) and patients with a low level of NK infiltration (n = 107) (<25 NK cells/25 HPF). Intratumoral lymphocytic infiltration also was counted in 25 areas at a magnification of x200. Patients were classified into a high infiltrating lymphocyte (IL) group (n = 69) (>150 cells/HPF) and a low IL group (n = 77) (<150 cells/HPF). The Kaplan-Meier curve was used to analyze surgical outcome. Multivariate analyses were performed to evaluate prognostic factors. RESULTS: Patients with a high level of NK infiltration had a higher rate of early gastric carcinoma, fewer metastases to the lymph nodes (P < 0.01), and less lymphatic invasion (P < 0.05) than patients with a low level of NK infiltration. NK cell infiltration also was found to correlate with depth of invasion, clinical stage, and venous invasion. There was no correlation between NK cells and lymphocytic infiltration (P = 0.07; correlation coefficient = 0.15). The 5-year survival rate of patients with a high rate of NK infiltration was 78%, which was significantly better than that of patients with a low level of NK infiltration (P < 0.01). Multivariate analysis did not show NK cell infiltration to be a significant prognostic factor. Combination analysis of the number of NK cells and lymphocytic infiltration was shown to be an independent prognostic factor (P = 0.02; hazard ratio = 1.32). CONCLUSIONS: Patients with a high level of NK infiltration were found to have a better prognosis than those with a low level of NK infiltration. Combination analysis with lymphocytic infiltration may provide useful information regarding the immunologic condition of patients with gastric carcinoma.     

树突状细胞浸润对进展期胃癌生物学行为和预后的影响

目的　研究进展期胃癌组织中树突状细胞 (DCs)浸润与胃癌临床病理特征、生物学行为、预后之间的相关性 ,明确机体免疫因素对胃癌的影响。方法　用免疫组化 (SLAB)法检测 6 1例进展期胃癌术后组织标本中增殖细胞核抗原 (PCNA)以及DCs标志蛋白S 10 0的表达 ;以原位末端标记技术 (TUNEL)检测胃癌细胞凋亡比例。结果　有淋巴结转移的胃癌DCs浸润数量低于无淋巴结转移者 (P <0 .0 5 ) ;Ⅲ期胃癌DCs浸润数量低于Ⅰ、Ⅱ期胃癌 (P <0 .0 1)。高DCs浸润组的晚期胃癌比例低于低DCs组 (P <0 .0 5 ) ;高DCs浸润组预后好于低浸润组。DCs浸润与增殖细胞核抗原标记指数(PCNA LI)呈负线性相关 (r=- 0 .4 71,P <0 .0 1) ,与凋亡细胞指数 (AI)呈正线性相关 (r =0 .39,P <0 .0 1)。结论　DCs在胃癌的发展和预后中有重要作用 ,抑制胃癌细胞增殖、促进胃癌细胞凋亡是其可能的作用机制。     

Prognostic value of KIT mutation type, mitotic activity, and histologic subtype in gastrointestinal stromal tumors.

PURPOSE: Previous studies have reported clinical correlates for KIT mutations in GISTs, but in most of those studies the KIT mutations were found in less than 50% of the GISTs. The aim of this study was to evaluate the prognostic relevance for KIT mutations in a series of GISTs in which the mutations were evaluated intensively by genomic and cDNA sequencing. PATIENTS AND METHODS: A comprehensive clinical and pathologic analysis of 48 patients with GISTs who had snap-frozen tissue was performed. The median tumor size was 10 cm (range, 2 to 30 cm). Median follow-up for disease-free patients was 48 months. KIT genomic and cDNA was sequenced by using nucleic acid templates isolated from frozen tumors. RESULTS: The overall 5-year recurrence-free survival was 41% +/- 6%. Five-year recurrence-free survival for patients with tumors that had mitotic counts of three mitoses or fewer per 30 high-power fields (HPF), more than three to 相似文献   

The number of intratumoral dendritic cells and zeta-chain expression in T cells as prognostic and survival biomarkers in patients with oral carcinoma

BACKGROUND: Dendritic cells (DCs) are antigen-presenting cells with a unique ability to cross prime T cells and generate strong antitumor responses. This study evaluates the presence and prognostic significance of DCs as well as functional T cells, which accumulate in the microenvironment in patients with oral squamous cell carcinoma (OSCC). METHODS: Immunohistochemistry for S-100 positive or p55 positive DCs and for T-cell receptor (TcR)-associated zeta-chain expression in tumor-infiltrating lymphocytes (TILs) was performed in 132 paraffin embedded specimens from patients with primary OSCC. The median clinical follow-up for the patients was 50 months. The numbers of intratumoral DCs or TILs expressing the zeta chain were determined microscopically and compared with clinical and pathohistologic prognostic parameters, including disease stage, T stage or tumor grade, lymph node involvement, as well as disease free survival and overall survival. RESULTS: Immunostaining identified DCs in the epithelial compartment of the tumors (S-100 positive) as well as interdigitating reticular DCs (p55 positive) in peritumoral areas. Based on S-100 staining, intratumoral DC infiltrates were low (<10 DCs per high-power field [HPF]) in 20% of OSCC specimens, intermediate (10-20 DCs per HPF) in 42% of OSCC specimens, and high (>20 DCs per HPF) in 37% of OSCC specimens. The number of S-100 positive DCs was positively and significantly correlated with that of p55 and of TILs with normal zeta-chain expression. A low number of infiltrating S-100 positive DCs was more predictive of poor survival (hazard ratio, 7.95) than lymph node involvement (hazard ratio, 3.36) or late T stage (hazard ratio, 2.92). A significant but weaker association of p55 positive DC infiltration with survival was observed. Low density of DCs and low or absent expression of the zeta chain in TILs correlated with each other and predicted the poorest survival and the greatest risk. CONCLUSIONS: The number of DCs infiltrating the tumor is a highly significant prognostic parameter in patients with OSCC. Furthermore, the absence or paucity of DCs is strongly linked to abnormalities in the TcR-associated zeta chain in TILs. The two biomarkers, zeta-chain expression in TILs and the number of S-100+ DCs in the tumor, independently predict overall survival, disease free survival, and time to disease recurrence in patients with OSCC.     

CD68巨噬细胞浸润对原发性食管小细胞癌预后的影响

目的：探讨不同亚型肿瘤相关巨噬细胞在原发性食管小细胞癌(PESC)中的浸润情况及其与患者临床病理指标和预后的关系。方法：回顾性分析汕头大学医学院附属肿瘤医院2000年1月—2019年12月进行手术治疗且临床病理资料完整的69例PESC患者组织标本。采用免疫组织化学法评估CD68巨噬细胞及CD163巨噬细胞在PESC中的浸润情况，卡方检验和Fisher精确检验分析其与PESC临床病理指标的关系，采用Kaplan-Meier生存分析及多因素Cox回归方法分析各检测指标与患者生存预后的关系。结果：CD68及CD163均在巨噬细胞的胞质或胞膜表达。CD68巨噬细胞与肿瘤T分期有关(χ²=6.336，r=-0.303，P=0.012)，与其他各临床病理指标均无明显相关。PESC患者的pTNM分期、手术淋巴结清扫数目、N分期、辅助性化疗及CD68巨噬细胞浸润情况与总生存期有关(P<0.05)。多因素Cox回归分析结果显示pTNM分期、手术淋巴结清扫数目、CD68巨噬细胞是PESC患者独立的预后因素。与CD68巨噬细胞低浸润组相比，CD68巨噬细胞高浸润患者的死亡风险降低[HR=0.340，95% CI (0.179，0.645)，P=0.001]。结论：CD68巨噬细胞高浸润是PESC患者独立的预后影响因素，CD68巨噬细胞高浸润的患者预后明显优于CD68巨噬细胞低浸润的患者。     

热休克蛋白在食管鳞癌中的表达及其意义

目的探讨热休克蛋白（HSPs）HSP27、HSP60、HSPT0和HSP90d在食管鳞癌及其切缘正常食管黏膜中的表达及其意义。方法168例食管鳞癌和42例切缘正常食管黏膜制成组织芯片,应用免疫组化EnVision法及Westernbolt检测HSP27、HSP60、HSP70和HSP90α在组织中的表达情况,分析4种HSPs的表达与肿瘤位置、肿瘤长度、浸润深度、分化程度和淋巴结转移的关系。结果食管鳞癌和切缘正常食管黏膜中,HSP27的阳性率分别为62．0％和42．1％;HSP60的阳性率分别为92．7％和63．2％;HSP70的阳性率分别为57．9％和22．2％;HSP90α的阳性率分别为33．7％和18．5％。统计学分析结果表明,HSP60和HSP70在食管鳞癌的表达均高于切缘正常食管黏膜（P〈0．01）,HSP27和HSP90α在食管鳞癌与切缘正常黏膜的表达差异均无统计学意义（P〉0．05）。除HSP27的表达随着食管鳞癌分化程度的降低而降低（P〈0．05）外,其他3种HSPs的表达与食管鳞癌的临床病理特征无关（P〉0．05）。结论HSP27、HSP60、HSPT0和HSP90α在食管鳞癌和切缘正常食管黏膜中均有表达。HSP60和HSP70在食管鳞癌的表达高于切缘正常食管黏膜,可能与食管鳞癌的生物学行为有关;HSP27的表达随食管鳞癌分化程度的降低而降低,HSP27的高表达可能影响鳞癌的分化程度。     

A 27 kDa heat shock protein that has anomalous prognostic powers in early and advanced breast cancer.

This paper describes a prospective immunohistochemical analysis of 27 kDa heat shock protein (HSP27) in 361 patients with primary breast cancer in relation to disease-free survival (DFS) and survival from first relapse (SR). Oestradiol (ER) and progesterone (PR) receptors were also quantitated and related to the HSP27 data. While ER positively predicted a good outcome for both DFS and SR, HSP27 positivity predicted a prolonged SR but short DFS. The association between HSP27 and DFS only attained statistical significance in node-negative patients. Subgroup analysis reinforced the complementary relationship of HSP27 and ER for SR and opposing influences for DFS. In both node-negative and node-positive women, ER+ HSP27- patients had a longer DFS than ER- HSP27+ counterparts. There was no relationship between HSP27 and overall survival. HSP27 staining was highly correlated with ER but not PR, patient age, tumour size or menstrual status. There was a marginal correlation (P = 0.04) with histological grade with well-differentiated tumours having the highest HSP27. Cox multivariate regression analysis of the contribution of HSP27 in the presence of data on ER, PR, stage, nodal status and histological grade indicated that HSP27 was not of independent prognostic importance for DFS or overall survival and was only of borderline significance for OS (P < 0.07). However, in the absence of ER and PR data, HSP27 staining is an effective way of getting the same prognostic information. HSP27 staining appears to correlate with different biological features in early and advanced breast, high HSP27 being linked with short DFS in node-negative patients but with prolonged survival from first recurrence.     

Increased expression of HSP27 inhibits invasion and metastasis in human esophageal squamous cell carcinoma

Previous studies have indicated that heat shock protein 27 (HSP27) had high correlation with the development and progression in several tumors. However, the roles of HSP27 in esophageal squamous cell carcinoma (ESCC) were uncertain. The aim in this study is to investigate the potential roles of HSP27 in the metastasis of ESCC. The expression of HSP27 in ESCC tissues and four human esophageal cancer cell lines were examined by immunohistochemistry and Western blotting, respectively. Wound healing assays, transwell assays, and in vivo assays were used to identify the differences of metastasis potential between normal and HSP27 overexpressed cells. HSP27 expression was downregulated in cancer tissue compared to the matched normal tissue. And the positive staining was mainly located in the cytoplasm. Statistical analyses showed that the expression of HSP27 in ESCC was significantly correlated with the tumor differentiation (P?=?0.023), the patient’s TNM stage (P?=?0.013), lymph metastasis (P?=?0.020), and distant metastasis (P?=?0.017). HSP27 expression was significantly lower in highly metastatic cells than the less ones. The metastatic potentials of EC9706-H and EC109-H cells were higher than EC9706-L and EC109-L cells. In vitro and in vivo assays showed that overexpression of HSP27 in highly metastatic cells dramatically decreased their metastatic capacity. This study indicated that the expression level of HSP27 may be inversely correlated with the metastasis behavior of ESCC, and HSP27 may play an important role in this progression. HSP27 may be a potential molecular target for the therapy and prognosis of patients with ESCC.     

KIR2DS1介导同种异体自然杀伤细胞对树突状细胞杀伤作用的研究

目的 研究体外活化性杀伤细胞免疫球蛋白样受体KIR2DS1介导的自然杀伤（NK）细胞对树突状细胞（DC）的杀伤作用,分析体外KIR2DS1阳性的NK细胞与C2表位DC相互作用后C-C趋化因子受体类型7（CCR7）的表达,探究异源反应性NK细胞预防移植物抗宿主病（GVHD）的机制.方法 采集健康人外周血单个核细胞,通过NK细胞分选试剂盒富集NK细胞作为效应细胞;取初诊急性髓系白血病（AML）患者外周血,提取单个核细胞,诱导DC作为靶细胞;通过PCR-序列特异性引物（SSP）基因分型技术和直接测序（SBT）法检测NK细胞和靶细胞KIR基因和人类白细胞抗原（HLA）-Cw基因位点.CCK-8比色法检测KIR2DS1阳性和阴性的NK细胞对DC的杀伤作用;流式细胞术检测与DC作用后NK细胞表面CCR7的表达.结果 流式细胞术检测富集后的NK细胞纯度达（94.20±1.23）％.同一效靶比（10：1）下,KIR2DS1阳性的NK细胞对DC杀伤作用高于KIR2DS1阴性的NK细胞（t=3.70,P＜ 0.05）;同一效靶比（10：1）下,HLA C1/C1组KIR2DS1阳性的NK细胞对C2/C2组DC的杀伤作用高于其对C1/C1组和C1/C2组DC的杀伤作用,杀伤率分别为（15.06±1.81）％、（10.07±1.03）％和（8.65±0.93）％（F=56.368,P=0.001）.与HLA-C2＋ DC共培养后,KIR2DS1阳性NK细胞表面CCR7阳性表达率增加.结论 活化性的KIR2DS1基因能够在体外有效介导供者NK细胞杀伤受者DC,可能用于预防GVHD;同时能够使NK细胞捕获CCR7,体外获得定向迁移能力.