VCAM-1与TNF-α在口腔鳞癌血管生成中的协同作用

目的:探讨血管细胞黏附分子-1(vascular cell adhesion molecule-1,VCAM-1)和肿瘤坏死因子-α(tumor necrosis factor-α,TNF-α)在口腔鳞癌中的表达及其在口腔鳞癌血管生成中的协同作用。方法:应用免疫组化二步法检测48例口腔鳞癌组织和10例正常口腔黏膜组织中VCAM-1、TNF-α和CD31表达并计数微血管密度(microvessel density,MVD)。结果:VCAM-1和TNF-α在口腔鳞癌组织的表达率明显高于正常口腔黏膜组织(P<0.01);VCAM-1和TNF-α同时表达阳性的肿瘤组织中MVD值明显高于VCAM-1和TNF-α单一表达阳性的MVD值(P<0.05)。结论:VCAM-1和TNF-α在口腔鳞癌组织中的高表达可能与肿瘤血管生成有关,并可能在血管生成中具有协同效应,共同促进肿瘤的生长和转移。     

口腔鳞癌中促血管生成素-2的表达与血管生成的关系

目的:研究口腔鳞癌组织中促血管生成素2(angiopoietin2,Ang2)的表达及其与微血管密度(microvesseldensity,MVD)的关系,探讨Ang2在口腔鳞癌血管生成中的作用及意义。方法:用免疫组织化SABC法检测41例口腔鳞癌标本(有淋巴结转移者13例)及10例正常口腔黏膜组织中的Ang2和CD34表达并计数微血管密度。结果:Ang2在口腔鳞癌组织中阳性表达率为68.29%(28/41),显著高于Ang2在正常组织中的表达(P<0.05);Ang2表达主要集中于癌灶边缘的血管重建区。口腔鳞癌组织中MVD显著高于正常组织(P<0.01);中分化型的肿瘤MVD值显著高于高分化型的肿瘤(P<0.05);有淋巴结转移的肿瘤MVD值显著高于无淋巴结转移的肿瘤(P<0.05)。Ang2表达阳性组中MVD明显高于Ang2表达阴性组(P<0.01),Ang2的表达与MVD呈正相关(P<0.01)。结论:Ang2在口腔鳞癌组织中的高表达可能在口腔鳞癌的发生发展中起重要作用,并与肿瘤血管生成有关。     

口腔鳞癌中促血管生成素-2的表达与临床病理学特征及血管生成的关系

目的 :研究口腔鳞癌中促血管生成素 2 (Angiopoietin 2 ,Ang 2 )的表达及其与临床病理学特征和微血管密度 (microvesseldensity ,MVD)间的关系。 方法 :用免疫组化SABC法检测口腔鳞癌标本 41例 (有淋巴结转移者13例 )及 3 0例癌旁正常组织和 10例正常口腔黏膜组织中的Ang 2和CD3 4表达并计数微血管密度 (MVD )。结果 :Ang 2表达主要定位于肿瘤细胞胞浆 ;Ang 2在口腔鳞癌组织中的表达显著高于癌旁正常组织 (P <0 .0 5 )和正常口腔黏膜组织 (P <0 .0 1) ;Ang 2表达与肿瘤的淋巴结转移密切相关 (P <0 .0 1) ,而与病人的性别、年龄和TNM分期及肿瘤分化程度无关 (P >0 .0 5 ) ;Ang 2表达阳性组中MVD显著高于Ang 2表达阴性组 (P <0 .0 5 ) ;Ang 2的表达与MVD呈正相关 (P <0 .0 1)。结论 :Ang 2在口腔鳞癌组织中的高表达可能在口腔鳞癌的发展中起重要作用 ,并与肿瘤的淋巴结转移和血管生成有关。     

口腔鳞癌中环氧合酶-2的表达与微血管密度的关系

目的　检测口腔鳞癌中环氧合酶-2(COX-2)和微血管密度(MVD)的表达,以探讨COX-2的表达与口腔鳞癌 血管生成的关系及其临床意义。方法　应用PV-9000两步免疫组织化学染色法检测76例口腔鳞癌组织、12例正常 口腔黏膜组织中的COX-2的表达,并通过CD34单抗标记检测肿瘤MVD。结果　COX-2在口腔鳞癌中的阳性表达 率为81·6%,明显高于对照组(P<0·001)。COX-2表达阳性组的MVD值为37·51±13·48,显著高于阴性组的MVD 值19·71±12·87 (t=4·547,P<0·01),亦明显高于正常组织的MVD值12·92±5·37 (t=5·308,P<0·01)。COX-2 的表达与口腔鳞癌颈淋巴结转移、瘤体大小、TNM分期及分化程度相关(P<0·05)。结论　口腔鳞癌组织COX-2高 表达与MVD及口腔鳞癌颈淋巴结转移、瘤体大小、TNM分期及分化程度有密切关系,COX-2可能是口腔鳞癌的重要 促血管生成因子之一。     

口腔鳞癌COX-2表达和肿瘤血管生成的研究

目的 探讨环氧化酶-2(COX-2)表达和口腔鳞癌血管生成的关系.方法 免疫组化检测口腔鳞癌COX-2、诱导型一氧化氮合酶(iNOS)、血管内皮生长因子(VEGF)表达,并测定肿瘤微血管密度(MVD).结果 口腔鳞癌COX-2表达与VEGF、iNOS表达密切相关(P＜0.05).口腔鳞癌COX-2表达阳性组和阴性组MVD有显著差异(P＜0.01)结论 口腔鳞癌COX-2表达和肿瘤血管生成有关,iNOS 和VEGF可能参与COX-2对肿瘤血管生成的促进作用.     

口腔鳞癌中VCAM-1基因表达与临床病理学特征及血管生成的关系

目的:研究口腔鳞癌中血管细胞黏附分子-1(vascular cell adhesion molecule-1,VCAM-1)的基因表达及其与临床病理学特征和微血管密度(microvessel density,MVD)的关系.方法:应用组织原位杂交和免疫组化检测48例口腔鳞癌组织和10例正常口腔黏膜组织中VCAM-1mRNA和VCAM-1蛋白的表达和定位,并计数微血管密度(MVD).采用SPSS13.0软件包中的t检验及χ2检验进行统计学分析.结果:VCAM-1mRNA主要定位于肿瘤细胞胞质,VCAM-1蛋白主要定位于肿瘤细胞胞膜和胞质;VCAM-1mRNA和蛋白在口腔鳞癌中的表达均显著高于正常口腔黏膜组织(P<0.01);VCAM-1的表达与口腔鳞癌的浸润深度、淋巴结转移密切相关(P<0.01),而与患者的年龄、性别及病理分级无关:VCAM-1的表达与MVD值呈正相关(P<0.01).结论:VCAM-1的高表达可能在口腔鳞癌的侵袭和淋巴结转移过程中起着重要作用,并与肿瘤血管生成有关.     

口腔鳞癌中COX-2的表达与淋巴管生成的关系

目的:检测口腔鳞癌中环氧合酶-2(COX-2)和微淋巴管密度(MLVD)的表达,探讨COX-2与口腔鳞癌淋巴管生成的关系及临床意义.方法:应用免疫组织化学染色(S-P法)检测40例口腔鳞癌组织、14例正常口腔黏膜组织中COX-2的表达情况.应用免疫双重组织化学染色检测肿瘤中的MLVD.结果:COX-2 在口腔鳞癌中的阳性表达率为70.0 %,明显高于对照组(P ＜ 0.01).COX-2的表达与口腔鳞癌颈淋巴结转移、TNM分期相关(P ＜0.05).COX-2表达阳性组的MLVD值为23.3±1.9,显著高于阴性组的MLVD值16.9±2.2( t ＝ 9.295,P ＜ 0.01).结论:COX-2在口腔鳞癌组织中表达明显上调,并与淋巴管生成、颈淋巴结转移及TNM分期等临床病理生物学行为有关,COX-2可能在口腔鳞癌的生长及转移中起重要作用.     

口腔鳞癌组织中Survivin的表达与血管生成的关系

目的 :观察口腔鳞癌组织中Survivin的表达及其与微血管密度 (microvesseldensity ,MVD)的关系 ,探讨Survivin对口腔鳞癌血管生成的作用及意义。方法 :收集口腔鳞癌标本 42例 ,其中有淋巴结转移者 14例 ,正常口腔黏膜组织 10例 ,用免疫组化染色法探测Survivin和CD3 4 的表达情况并计数微血管密度 (MVD)。结果 :正常口腔黏膜均未见Survivin表达 ,口腔鳞癌中Survivin表达阳性率为 80 .95 % ( 3 4/4 2 )。口腔鳞癌中MVD显著高于正常组织 ,且随病理分化不良而增高 (P <0 .0 5 ) ,有淋巴结转移组MVD显著高于无淋巴结转移组 (P <0 .0 5 ) ,Survivin表达阳性组中MVD明显高于Survivin表达阴性组 (P <0 .0 5 ) ,Survivin的表达与MVD呈正相关 (P <0 .0 5 )。结论 :Survivin在口腔鳞癌组织中的高度表达在口腔鳞癌发生发展中起重要作用 ,并与其血管生成和淋巴结转移有关     

口腔鳞癌组织中基质金属蛋白酶-2与血管生成的关系

目的 观察口腔鳞癌组织中基质金属蛋白酶—2(matrix metalloproteinase-2,MMP-2)表达及其与微血管密度(microvessel density,MVD)的关系，探讨MMP-2对口腔鳞癌血管生成的作用和意义。方法 应用SABC免疫组织化学法检测40例口腔鳞癌组织MMP—2表达和MVD，并分析MMP-2表达与MVD及它们与口腔鳞癌组织临床病理特征之间的关系。结果 癌组织中MMP—2高表达显著高于癌旁组织，癌旁组织MMP—2低表达亦明显高于正常组织(P＜0．05)。MMP—2高表达、MVD与口腔鳞癌病理分级和临床分期无关，与口腔鳞癌颈淋巴结转移密切相关(P＜0．05)。癌组织中MMP—2高表达的MVD均显著高于MMP—2低表达者(P＜0．01).结论 口腔鳞癌组织MMP-2高表达与MVD及口腔鳞癌颈淋巴结转移有密切关系，MMP—2可能是口腔鳞癌的重要促血管生成因子之一。     

肿瘤坏死因子-α在口腔鳞癌中的表达及临床意义

目的:研究肿瘤坏死因子-α(tumor necrosis factor-α,TNF-α)在口腔鳞癌组织中的表达,并探讨其在口腔鳞癌生物学行为中的意义。方法:应用免疫组化SABC法检测41例口腔鳞癌组织中TNF-α的表达,并用10例正常口腔黏膜组织作为对照。结果:口腔鳞癌组织中TNF-α的表达较正常组织增加,其差异具有统计学意义。口腔鳞癌中TNF-α阳性表达主要分布在癌细胞和间质细胞的胞质中,TNF-α表达与口腔鳞癌的分化、TNM分期及淋巴结转移有关。结论:TNF-α可能参与了口腔鳞癌的发展和转移。     

Odontogenic ghost cell tumour with clear cell components: clear cell odontogenic ghost cell tumour?

A case of odontogenic ghost cell tumour (OGCT) with clear cell components was encountered in the mandible of a 63-year-old man. The tumour revealed ameloblastomatous-type epithelial components accompanied by clusters of ghost cells and dentinoid juxtaposed to the odontogenic epithelium. In addition, some areas of the tumour tissue showed sheets and islands of clear, glycogen containing epithelial cells, which were separated by a thin fibrous connective tissue stroma. Both ameloblastic and clear cells exhibited positive immunoreactivities for cytokeratin 19 and AE1/3. It is not known whether this tumour represents a clear cell change of a pre-existing OGCT or a separate and distinct neoplasm derived de novo from the odontogenic epithelium. This tumour was given the term 'clear cell OGCT' because it captures the clear cell components, which is one of the most prominent distinguishing features of the tumour.     

The human periodontal ligament cell: a fibroblast-like cell acting as an immune cell

Jönsson D, Nebel D, Bratthall G, Nilsson B‐O. The human periodontal ligament cell: a fibroblast‐like cell acting as an immune cell. J Periodont Res 2011; 46: 153–157. © 2010 John Wiley & Sons A/S Background: Periodontal ligament cells are fibroblast‐like cells characterized by collagen production but also possessing some osteoblastic features. In the light of numerous studies presented during recent times, which show that human periodontal ligament cells also produce cytokines and chemokines in response to inflammation promoters, it is reasonable to suggest that periodontal ligament cells play a role as promoters of periodontal inflammation through these mechanisms. Material and Methods: The periodontal ligament, which harbours the periodontal ligament cells, is a part of the attachment apparatus comprised of periodontal ligament cells, extracellular matrix and fibres, attaching the root cement to the alveolar bone. Periodontal ligament cells are in close proximity to bacteria within the plaque and the pocket, and thus these cells are readily accessible to bacterial endotoxins and other promoters of inflammation. Results: Cytokines and chemokines, released by periodontal ligament cells upon stimulation with inflammation promoters, reach the blood vessels easily thanks to rich vascularization of the periodontium stimulating recruitment of white blood cells to the site of inflammation. In addition to classical inflammatory cells, such as leucocytes, macrophages and mast cells, the periodontal ligament cells also contribute to periodontal inflammation via their production and release of cytokines and chemokines. Conclusion: Therefore, pharmacological treatment of periodontitis should aim to reduce the release of proinflammatory agents not only from classical inflammatory cells but also from periodontal ligament cells.     

Stem cell patterns in cell lines derived from head and neck squamous cell carcinoma

The initiation, growth, recurrence and metastasis of solid tumours, including squamous cell carcinoma of the head and neck region, have been related to the behaviour of a small subpopulation of 'tumour-initiating' cells. Cells with stem cell characteristics have also been identified in cell lines derived from cancers and the aim of the present work was to extend examination of such cells. Established cell lines were examined for their patterns of colony morphologies and staining, the presence of a Hoechst dye-excluding 'side population', expression of the putative stem cell markers CD44, CD133 and CD29, and their ability to grow as 'cancer spheroids'. Two cell lines, CaLH2 and CaLH3, recently generated from HNSCC tumour biopsies, were similarly examined. All cell lines showed a holoclone/meroclone/paraclone series of colony morphologies and cell sorting indicated that CD44 marker expression was related to clonogenicity. FACS analysis after exposure to Hoechst dye indicated that the CA1, H357 and UK1 cell lines contain a dye-excluding 'side population', a property associated with stem-like subpopulations. When held in suspension, all cell lines formed spheroids that could be re-passaged. These observations indicate that cell lines derived from HNSCC contain cells with stem cell properties and that such cell lines may provide experimental systems relevant to the behaviour of stem cells present in the tumours of origin and to their responses to therapy.     

人口腔鳞状细胞癌细胞系TSCC2016的建立及生物学特性分析

目的: 建立一株口腔鳞状细胞癌细胞系TSCC2016,明确其生物学特性,为研究口腔鳞状细胞癌的发病机制和临床治疗提供工具。方法: 选取新鲜的口腔鳞状细胞癌患者手术标本,采用组织块培养法,建立口腔鳞状细胞癌细胞系TSCC2016,观察其细胞形态和生长特性,对其表面标记、细胞核型和裸鼠成瘤等进行检测。采用SPSS13.0软件包对数据进行统计学分析。结果: TSCC2016的传代已经超过100代。细胞生长稳定,形态为均一的多角形上皮细胞,具有典型的口腔鳞状细胞癌细胞特点。细胞STR分型结果表明,TSCC2016细胞为原代培养出的口腔鳞状细胞癌细胞,无其他肿瘤细胞系污染。TSCC2016细胞的成瘤性较好,成瘤率为100%,瘤体生长较快。结论: 成功建立了一株口腔鳞状细胞癌细胞系TSCC2016,为口腔鳞状细胞癌的基础研究提供了一个稳定的细胞株。     

Cancer stem cell immunophenotypes in oral squamous cell carcinoma

J Oral Pathol Med (2011) 40 : 135–142 Background: The presence of cancer stem cell (CSC) antigens can be evidenced in some human tumors by phenotypic analysis through immunostaining. This study aims to identify a putative CSC immunophenotype in oral squamous cell carcinoma (OSCC) and determine its influence on prognosis. Methods: The following data were retrieved from 157 patents: age, gender, primary anatomic site, smoking and alcohol intake, recurrence, metastases, histologic classification, treatment, disease‐free survival (DFS), and overall survival (OS). An immunohistochemical study for CD44 and CD24 was performed in a tissue microarray of 157 paraffin blocks of OSCCs. Results: In univariate analysis, the immunostaining pattern showed significant influences in relation to OS for alcohol intake and treatment, as well as for the CD44⁺ and CD44^?/CD24^? immunophenotypes. The multivariate test confirmed these associations. Conclusions: Based on our results, the CD44 immunostaining and the absence of immunoexpression of these two investigated markers can be used in combination with other clinicopathologic information to improve the assessment of prognosis in OSCC.     

Squamous cell carcinoma antigen in oral squamous cell carcinomas

Squamous cell carcinoma (SCC) antigen is a tumor-associated antigen isolated from the squamous cell carcinoma of the uterine cervix. In order to estimate the usefulness of the SCC antigen in monitoring the clinical behaviors of oral squamous cell carcinomas, we analyzed clinicopathologically and immunohistochemically 54 cases of squamous cell carcinoma of the oral cavity. Elevated serum SCC antigen levels were detected in 23 (42.6%) out of 54 oral squamous cell carcinomas. The positive rate of serum SCC antigen levels was significantly higher in the patients with advanced clinical stages and poorly differentiated carcinoma. The serum levels declined rapidly after the surgical operation. It is considered that the serum SCC antigen levels could be useful in monitoring the extension, effectiveness of therapy, recurrence and metastases of the oral squamous cell carcinomas. Immunohistochemically, strong staining was seen in the cytoplasm of the well-differentiated carcinoma cells.     

B7-H3在口腔鳞癌细胞中的表达及其意义

目的：研究B7-H3在口腔鳞癌组织和正常口腔黏膜组织中的表达差异,以及B7-H3对口腔鳞癌细胞生物学的影响。方法：RT-qPCR、免疫组化检测B7-H3在口腔鳞癌组织和正常口腔黏膜组织的表达差异;构建B7-H3腺病毒表达载体,感染人舌鳞癌细胞Tca8113,CCK-8、PI染色流式细胞仪检测B7-H3高表达对Tca8113细胞增殖和细胞周期的影响。采用SPSS11.0软件包对数据进行统计学处理。结果：RT-qPCR结果显示,口腔鳞癌组织B7-H3 mRNA表达为3.021±0.2310,显著高于正常口腔黏膜组织（0.6002±0.1010）;与对照组比较,10、50、100感染复数组在作用24h呈现促进细胞增殖作用,S期细胞比例显著增加,72h时增殖作用最强（P〈0.05）;与感染复数1组比较,同时间段50、100组促细胞增殖作用和S期细胞比例显著增加（P〈0.05）,50与100组比较无显著差异（P〉0.05）。结论：口腔鳞癌组织B7-H3mRNA和蛋白表达显著高于正常口腔黏膜组织;B7-H3高表达,可促进口腔鳞癌细胞增殖。     

舌癌单细胞培养建系与癌干细胞相关标志的检测

目的 以舌癌Tca8113M1细胞系单细胞培养建系为基础,观察Tca8113M1细胞系中舌癌干细胞存在的现象及其相关标志的变化规律。方法 选取Tca8113M1细胞系,以有限稀释法进行体外单细胞培养并建立细胞亚系,在证实其成瘤性的基础上,进一步采用流式细胞术检测癌干细胞相关标志CD44、CD184、细胞外可溶性抗原（ESA）的表达情况,着重观察单个细胞培养形成细胞克隆的形态与时间。结果 以有限稀释法获取192个Tca8113M1舌癌单个细胞,在96孔板中进行体外培养,获取12个细胞亚系（获取比例为6.25%）,均有高成瘤性。癌干细胞相关标志CD44 与ESA均为高水平表达,而CD184表达则在12个细胞系之间有差异。在单个细胞培养中,形成完全克隆、部分克隆与旁克隆3种形态,12个细胞亚系均源于单个细胞形成的完全克隆,均可进行连续传代与扩增,而部分克隆与旁克隆则在后续培养中逐渐衰老与消亡。结论 Tca8113M1细胞系中可能存在癌干细胞,而单细胞培养可形成完全克隆并建立细胞亚系,是进行舌癌干细胞后续研究重要的细胞培养模式。