肿瘤浸润性树突状细胞的研究进展

树突状细胞(DCs)是最具潜能的抗原提呈细胞，它能激活初始型T细胞，在启动抗瘤免疫应答中扮演着重要角色。肿瘤浸润性树突状细胞(TIDCs)反映了荷瘤宿主的抗瘤免疫能力，其浸润密度可能与肿瘤预后有关。TIDC是功能低下或无功能的树突状细胞，肿瘤细胞分泌的免疫抑制因子对其表型特征的改变可能是致使其功能低下的原因。以上研究为DC介导的肿瘤免疫治疗提供了理论基础，并指导人们从不同途径利用DC诱导抗瘤免疫反应，从而达到治疗肿瘤的目的。     

鳞状细胞癌抗原、人绒毛膜促性腺激素及肿瘤特异性生长因子在子宫内膜癌中的表达及临床意义分析

目的 探讨子宫内膜癌患者鳞状细胞癌抗原(SCC-Ag)、人绒毛膜促性腺激素(HCG)及肿瘤特异性生长因子(TSGF)水平,并分析其意义.方法 选取子宫内膜癌患者与子宫良性病变患者各148例分别作为子宫内膜癌组与良性病变组,并取148例健康体检者作为对照组,比较3组研究对象SCC-Ag、HCG、TSGF水平,并分析其与子...     

胃癌组织中血管内皮生长因子C与肿瘤浸润性树突状细胞的相关性

目的: 探讨胃癌组织中血管内皮细胞生长因子C(vascular endothelial growth factorc, VEGFC)与肿瘤浸润性树突状细胞( tumor infiltrating dendritic cells，TIDC)在胃癌浸润转移中的作用及两者的关系。方法：52例胃癌石蜡标本选自重庆医科大学附属第一医院外科2004年9月至     

TTF-1、EGFR肿瘤浸润性树突状细胞在肺腺癌中的表达情况及其临床意义

目的 探讨甲状腺转录因子-1(TTF-1)、表皮生长因子受体(EGFR)、肿瘤浸润性树突状细胞(TIDC)在肺腺癌中的表达情况及其临床意义.方法 回顾性收集肺腺癌患者100例,比较肿瘤组织和癌旁组织中EG-FR、TTF-1、TIDC表达水平,同时分析肿瘤组织中EGFR、TTF-1、TIDC与肺腺癌患者肿瘤分化程度和TNM分期的关系.结果 肿瘤组织中TIDC数密度、MHC-Ⅱ阳性DC、CD54阳性DC均明显低于癌旁组织,TTF-1阳性率、EGFR突变率均明显高于癌旁组织,差异均有统计学意义(P﹤0.01);肿瘤细胞为中低分化及TNM分期为Ⅲ~Ⅳ期患者TIDC数密度、MHC-Ⅱ阳性DC、CD54阳性DC均低于高分化患者及Ⅰ~Ⅱ期患者,TTF-1阳性率、EGFR突变率均高于高分化患者及Ⅰ~Ⅱ期患者,差异均有统计学意义(P﹤0.05).结论 TIDC在肿瘤组织中表达水平较低,且多为不成熟的调节性DC细胞,TTF-1在肺腺癌中表达水平较高,EGFR突变率增高.EGFR、TTF-1、TIDC均与临床分期和肿瘤细胞分化程度有关.     

肿瘤特异生长因子检测在肿瘤诊断与疗效观察中的应用

目的 研究肿瘤特异生长因子检测在肿瘤诊断及治疗效果观察中应用的意义。方法 采用比色法对２０９例恶性肿瘤患者，３３例正常人，１５例良性瘤患者及部分恶性肿瘤患者治疗后血清肿瘤特异生长因子（Ｔｕｍｏｒ Ｓｐｅｃｉｆｉｃ Ｇｒｏｗｔｈ Ｆａｃｔｅｒ，ＴＳＧＦ）进行检测分析。结果 恶性肿瘤患者血清ＴＳＧＦ浓度明显高于正常对照组和良性肿瘤患者，并且恶性肿瘤患者治疗后血清ＴＳＧＦ浓度明显比治疗前低，血清ＴＳＧＦ     

食管癌组织中肿瘤浸润性树突状细胞表型改变及功能分析

目的:探讨食管癌患者肿瘤组织中肿瘤浸润性树突状细胞表型改变及功能。方法:收集2017年01月至2018年09月我院收治的食管癌患者92例作为观察组,选择同时期我院收治的92例食管良性肿物患者作为对照组。术中分别取食管癌标本和良性肿物标本。检测相应组织中肿瘤浸润性树突状细胞表达水平及表型,同时检测T细胞亚群表达情况,分析肿瘤浸润性树突状细胞表达情况和食管癌患者临床特征的相关性。结果:与对照组比较,观察组肿瘤浸润性树突状细胞密度、MHC-Ⅱ阳性树突状细胞和CD54阳性树突状细胞百分比均显著降低(P＜0.05);观察组CD4+T细胞增高［(24.81±3.72）% vs （20.77±3.63）%,P=0.000］;CD8+T细胞降低［(20.90±4.12）% vs （23.08±4.42）%,P=0.001］。食管癌组织中肿瘤浸润性树突状细胞密度、MHC-Ⅱ阳性树突状细胞和CD54阳性树突状细胞百分比与肿瘤直径、TNM分期和淋巴结转移有关(P＜0.05)。食管癌组织中肿瘤浸润性树突状细胞密度、MHC-Ⅱ阳性树突状细胞和CD54阳性树突状细胞与CD4+T细胞显著负相关,与CD8+T细胞显著正相关(P＜0.05)。结论:肿瘤浸润性树突状细胞在食管癌组织中低表达,功能低下,与T细胞亚群失衡和预后不良有关。     

Caveolin-1在子宫内膜癌组织中的表达及临床意义

目的　探讨窖蛋白-1（Caveolin-1）在子宫内膜癌组织中的表达及其与临床病理特征的关系。方法 采用免疫组化法及蛋白质印迹法检测45例子宫内膜癌组织（内膜癌组）、35例子宫内膜良性病变组织（良性组）和35例正常子宫内膜组织（正常组）中Caveolin-1蛋白的表达。实时荧光定量PCR法检测内膜癌组中Caveolin-1 mRNA的表达,并分析其与临床病理特征的关系。结果 Caveolin-1蛋白在内膜癌组、良性组、正常组中的表达呈递减趋势,差异有统计学意义（P<0.05）;在内膜癌组淋巴结转移者Caveolin-1 mRNA表达高于无淋巴结转移者（P=0.001）;TNM分期Ⅱ期、Ⅲ+Ⅳ期者高于Ⅰ期者（P=0.002,P=0.040）;低分化、中分化者显著高于高分化者（P＜0.001,P=0.020）;Caveolin-1在子宫内膜癌组织中的表达与年龄及组织分型无明显相关性（P＞0.05）。结论 Caveolin-1在子宫内膜癌组织中高表达,且与淋巴结转移、分化程度和ＴＮＭ分期有关,有望成为子宫内膜癌早期诊断的指标及治疗靶点。     

bax基因在子宫内膜癌中的表达及意义

目的研究bax基因在子宫内膜癌发生发展中的作用。方法采用RT-PCR方法检测8例正常增殖期子宫内膜、6例子宫内膜单纯及复合增生、6例子宫内膜不典型增生及42例子宫内膜癌组织中bax基因mRNA的表达。结果以8例正常增殖期子宫内膜为表达参照,在1例子宫内膜复合增生、2例子宫内膜非典型增生和27例（64.3%）子宫内膜癌中,bax基因mRNA过表达,其余为中度表达。在子宫内膜癌中,随着临床分期及组织学分级的增加、肌层侵袭的加深以及淋巴结的转移,bax基因mRNA过表达阳性率逐渐增加（除临床分期P＞0.05外,其余均P＜0.05）。结论bax基因参与子宫内膜细胞增殖与凋亡过程,与子宫内膜癌的发生发展有关,可作为评估子宫内膜癌高危因素和恶性生物学行为的重要参考指标之一。     

树突状细胞对肿瘤浸润性淋巴细胞抗结肠癌活性影响的研究

目的:探讨树突状细胞(DC)激活的肿瘤浸润性淋巴细胞(TIL)体外对结肠癌细胞的杀伤活性。方法:从结肠癌患者外周血获取DC,应用粒/巨噬细胞集落刺激因子(GM-CSF)、白细胞介素-4(IL-4)和肿瘤抗原激活DC,然后用DC激活TIL,观察TIL在体外对自体结肠癌细胞和VoLo细胞的杀伤活性。结果:DC激活的TIL对自体结肠癌细胞具有很强的杀伤活性,杀伤率为87.62%±3.01%,明显高于未经DC激活的TIL、DC激活的T淋巴细胞和未经DC激活的T淋巴细胞对自体结肠癌细胞的杀伤率分别为53.72%±1.50%、52.23%±1.46%和3.55%±0.25%,而它们对VoLo细胞的杀伤活性则相对较低。结论:结肠癌患者外周血DC能诱导TIL产生高效而特异的抗结肠癌免疫活性。     

Expression and significance of tumor infiltrating dendritic cells in renal cell carcinoma

Dendritic cells(DCs) are considered to be the most effective antigen-presenting cells(APCs) that play a major role in initiating the antitumor immune response. Tumor infiltrating dendritic cells(TIDCs) are DCs that exist in microenviroment of tumors. Although the function and significance of TIDCs in the immune response to tumor have never been clearly demonstrated, their location suggests that they play a critical role in the presentation of tumor antigen to specific T cells[1]. For the…     

食管鳞癌和转移淋巴结组织中CD1a和CD83的表达及其临床意义

目的：探讨食管鳞癌（esophageal squamous cell carcinoma,ESCC）和转移淋巴结组织中CD1a和CD83的表达及其与ESCC临床病理特征间的关系。方法：选取河北医科大学第四医院胸外科2002年5月至2003年12月间手术切除并经病理确诊的78例ESCC石蜡标本,采用流式细胞术检测78例ESCC、24例正常食管黏膜、35例正常淋巴结和32例转移淋巴结组织中CD1a和CD83的表达。结果：（1）ESCC组织中CD1a和CD83的表达量明显低于正常黏膜CD1a和CD83的表达量(均P<0.05)。（2）CD1a表达量与癌组织浸润深度、临床分期、分化程度及淋巴结转移无相关性(均P>0.05);CD83表达量与ESCC临床分期及淋巴结转移有关(P<0.05)。（3）转移淋巴结组织中CD1a表达量与正常淋巴结无显著性差异(P>0.05);转移淋巴结组织中CD83表达量显著低于正常淋巴结组织(P<0.05)。结论：ESCC组织中CD83的表达量反映ESCC局部免疫状态,在ESCC的发生、发展过程中具有重要作用,可作为评价食管癌生物学行为的指标。     

膀胱移行细胞癌肿瘤浸润免疫细胞表型及临床意义

背景与目的:对肿瘤浸润免疫细胞分型有助于了解肿瘤局部的细胞免疫状态,对指导肿瘤免疫治疗具有一定意义。关于肾癌、卵巢癌、乳腺癌、结肠癌等肿瘤的免疫细胞表型已有报道。因此本研究旨在探讨膀胱移行细胞癌肿瘤浸润免疫细胞表型及临床意义。方法:采用免疫组化法对58例膀胱癌标本肿瘤浸润免疫细胞进行分型,测定细胞密度及癌巢进入率,与肿瘤分期、分级进行相关性分析。结果:肿瘤组织内存在CD3 T细胞(CD3 )、CD8 T细胞(CD8 )、巨噬细胞(Mφ)、树突状细胞(DC)和自然杀伤细胞(NK),正常膀胱黏膜未见DC和NK。浸润肿瘤和低分化肿瘤CD3 、CD8 和Mφ密度分别高于浅表肿瘤和高分化肿瘤,差异有显著性。浸润肿瘤NK密度显著高于浅表肿瘤,与肿瘤分化程度无相关性。DC密度与肿瘤分期、分化程度无相关性。浅表肿瘤CD3 癌巢进入率显著高于浸润肿瘤,与肿瘤分化程度无相关性。浅表肿瘤、高分化肿瘤CD8 、Mφ和DC癌巢进入率分别高于浸润肿瘤、低分化肿瘤,差异有显著性。NK癌巢进入率与肿瘤分期、分级无相关性。结论:DC和NK是伴随膀胱癌发生特异性出现的免疫细胞。随着肿瘤进展,多种免疫细胞进入肿瘤组织,数量呈上升趋势,提示机体免疫系统对肿瘤细胞发生积极的反应。但是多种免疫细胞的癌巢进入率却呈下降趋势,提示肿瘤进展可能使多种免疫细胞进入癌巢受阻。     

The expression and clinical value of tumor infiltrating dendritic cells in tumor tissues of patients with esophageal cancer

BackgroundAs dendritic cells (DCs) are the major antigen-presenting cells of the immune system, understanding their role in esophageal cancer is essential for the development of preventative and treatment strategies. This study investigated the expression level and clinical value of tumor infiltrating dendritic cells (TIDCs) in tumor tissues of patients with esophageal cancer.MethodsFrom January 2019 to January 2021, 184 patients with esophageal cancer treated were prospectively enrolled as the observation group and 184 patients with benign esophageal tumors were selected as the control group. Tumor tissue samples were obtained and the expression level and phenotypes of the TIDCs were analyzed. The correlation between TIDC expression and clinical characteristics of patients with esophageal cancer was investigated.ResultsThe density of the TIDCs in the observation group was lower than that in the control group (8.76±2.25 vs. 9.97±2.19; P=0.000). Furthermore, the percentage of major histocompatibility complex-II (MHC-II) positive DCs and the percentage of CD54 positive DCs were relatively lower in the observation group compared to the control group (6.60%±2.12% vs. 9.34%±2.41%; P=0.000 and 7.41%±2.36% vs. 9.98%±2.47%; P=0.000, respectively). Esophageal cancer patients with lymph node metastasis had lower TIDC density, lower percentage of MHC-II positive DCs, and lower percentage of CD54 positive DCs compared to patients without node metastasis (P<0.05). Patients with stage III esophageal cancer also showed significantly lower TIDC density, lower percentage of MHC-II positive DCs, and lower percentage of CD54 positive DCs compared to patients with stage I/II esophageal cancer (P<0.05). Esophageal cancer patients with tumor diameter ≥4 cm presented with decreased TIDC density, decreased percentage of MHC-II positive DCs, and decreased percentage of CD54 positive DCs compared to patients with tumor diameter <4 cm (P<0.05). In addition, the density of TIDCs, the percentage of MHC-II positive DCs, and the percentage of CD54 positive DCs were significantly negatively correlated with the percentage of CD4⁺ T-lymphocytes and positively correlated with the percentage of CD8⁺ T-lymphocytes (P<0.05).ConclusionsPatients with esophageal cancer had low expression and function of TIDCs, and this was related to the imbalance of T-lymphocyte subsets, lymph node metastasis, TNM stage, and lesion size.     

Clinical significance of regulatory T cells and CD8+ effector populations in patients with human endometrial carcinoma

BACKGROUND:

A study was carried out to determine the functional attributes of CD4⁺ CD25⁺ regulatory T cells in cancer progression by suppressing antitumor immunity.

METHODS:

Triple‐color flow cytometry was used to study the phenotype expression of CD4⁺ CD25⁺ regulatory T cells and CD8⁺ T cells in the peripheral blood lymphocytes (PBLs) and tumor‐infiltrating lymphocytes (TILs) of 57 cases of stage I to IV endometrial carcinoma. The expression of T cell subsets was correlated with clinical prognostic parameters.

RESULTS:

The prevalence of CD4⁺ CD25⁺ T cells was significantly higher in the TILs than PBLs. The expression of CD4⁺ CD25⁺ regulatory T cells in cancer milieu correlated with the tumor grade, stage, and myometrium invasion. The expression of FOXP3 and GITR in CD4⁺ CD25⁺ regulatory T cells was lower in PBLs than TILs. Most tumor‐infiltrating CD8⁺ T cells were CD28^? CD45RA^? CD45RO⁺ CCR7^?, suggesting good terminal differentiation. Most of them had an activated role with CD69⁺ CD103⁺ CD152⁺. Functionally, both granzyme B and perforin were scarcely expressed in peripheral regulatory T cells but were highly expressed in peripheral regulatory T cells in the tumor microenvironment. In contrast, CD8⁺ cytotoxic T cells derived from PBLs expressed both granzyme B and perforin, and at significantly higher levels than in TILs. Further functional assays demonstrated that Th1 cytokines and cytotoxic molecules can be synchronously up‐regulated in CD8⁺ cytotoxic T cells.

CONCLUSIONS:

Regulatory T cells in the tumor microenvironment may abrogate CD8⁺ T cell cytotoxicity in a granzyme B‐ and perforin‐dependent conduit. Decreases in both Th1 cytokines and cytotoxic enzymes are relevant for regulatory T cell‐mediated restraint of tumor clearance in vivo. Of clinical significance, the expression of regulatory T cells in TILs may mediate T cell immune repression within cancer milieu and thus greatly correlate with cancer progression. Cancer 2010. © 2010 American Cancer Society.     

急性白血病患者血清肿瘤特异性生长因子水平测定的临床意义

目的：探讨肿瘤特异性生长因子（TSGF）在急性白血病中的表达和临床意义。方法：采用单克隆抗体透射比浊法测定62例急性白血病患者血清中TSGF水平。结果：急性白血病初诊患者血清TSGF水平明显低于正常对照组（P〈0．01）,完全缓解期TSGF水平恢复正常,未缓解和复发患者TSGF水平与初诊患者无明显差异（P〉0.05）。结论：检测TSGF水平变化有助于急性白血病病情判断,可作为疗效观察的辅助指标。     

子宫内膜癌脑转移的临床病理分析

目的:回顾性分析子宫内膜癌脑转移患者的临床病理特征,评估早期诊断脑转移并积极给予治疗对于预后的价值。方法:我们回顾性分析并观察2015年至2017年在南京鼓楼医院确诊的3例子宫内膜癌脑转移的病人,总结其临床症状、诊断、病理学形态和免疫组化表型特征、生物学特征及其治疗、疗效及预后等临床病理特征,并对照子宫内膜癌脑转移的相关文献报道,对其临床病理特点及治疗预后进行总结分析。结果:3例子宫内膜癌病例初治时均为早期子宫内膜样腺癌,组织学分级2例为3级,1例为2级,其中2例Ia期患者术后未接受任何辅助治疗,1例II期患者行了术后辅助化疗及同步放化疗。3例患者分别在发病60个月、12个月、32个月时发现脑转移,1例为小脑转移,2例为顶叶转移,其中有2例伴有颅外其他部位转移。确诊脑转移后1例行了手术+TOMO（螺旋断层精确放射治疗）,生存期约6个月;1例接受了IMRT（调强适形放疗）,现已存活6个月至今;1例未治疗,生存期仅12天。结论:子宫内膜癌脑转移发生率低,经过个体化多模式综合治疗可以有效地控制脑部转移病灶,缓解患者临床症状并延长患者的生存期。     

KDR mRNA在子宫内膜癌组织中的表达及临床意义

目的研究KDRmRNA的表达与子宫内膜癌发生、发展及生物学行为的关系。方法应用逆转录聚合酶链式反应(RT PCR)技术检测子宫内膜癌45例、子宫内膜不典型增生15例和正常子宫内膜15例组织中的KDRmRNA表达情况。结果KDRmRNA在子宫内膜癌、子宫内膜不典型增生和正常子宫内膜组织中的表达率分别为73.34%(33/45)、26.67%(4/15)和20.00%(3/15),相对含量分别为118.08±15.68、97.59±10.08和80.25±21.38。子宫内膜癌组的KDRmRNA相对含量高于其他两组,P值分别为0.009和0.007;不典型增生组高于正常内膜组,但经比较差异无统计学意义,P=0.431。手术病理分期Ⅲ、Ⅳ期及有淋巴结转移、低分化组的子宫内膜癌KDRmRNA相对含量高于手术病理分期Ⅰ期、无淋巴结转移和高分化组,P值分别为0.012、0.039和0.912;而与肌层浸润深度及病理类型无关,P值分别为0.889和0.912。结论KDRmRNA的过表达在子宫内膜癌的发生、发展中起重要作用,并与子宫内膜癌的生物学行为密切相关,可作为对子宫内膜癌进行治疗的靶位点。