P120 ctn/E-cad 在口腔鳞癌细胞迁移和侵袭中的功能

目的：分析P120-连环蛋白（P120-catenin,P120ctn）和E-钙粘蛋白（E-cadherin,E-cad）在口腔鳞癌（oral squamous-cell cancer,OSCC）细胞迁移和侵袭中的功能。方法：采用实时荧光定量PCR、Western blot检测HN4（人舌癌原发灶细胞）和HN12（人舌癌转移淋巴结细胞）中P120ctn、E-cad的mRNA和蛋白表达,通过Transwell细胞侵袭及细胞迁移试验等方法检测HOK（人口腔黏膜角化上皮细胞）、HN4和HN12细胞的迁移和侵袭能力。结果：HN4细胞中P120ctn和E-cad的mRNA和蛋白表达水平明显高于HN12,低于HOK细胞,差异均有统计学意义（P＜0．05）。HN4细胞的侵袭和转移能力显著高于HOK细胞,低于HN12细胞,差异均有统计学意义（P＜0．05）。结论：在OSCC细胞中P120 ctn与E-cad的表达下调,可能抑制了OSCC细胞的侵袭和转移。     

The biphasic differential expression of the cellular membrane protein, caveolin-1, in oral carcinogenesis

BACKGROUND: The increased expression of Cav-1 is seen in various cancers from prostate, esophagus, colon, breast and pancreas yet the information regarding the correlation between the expression of Cav-1 and oral cancer is blind. Thus, the expression profile of caveolin-1 (Cav-1) in oral carcinogenesis and the correlation to the clinicopathologic covariates are examined in this study. METHODS: Immunohistochemistry was used to detect Cav-1 expression in non-cancerous matched tissues (NCMT; n=12), and tissue from normal oral mucosa (NOM; n=12), oral pre-cancer lesions (OPL; n=17), primary oral squamous cell carcinoma (POSCC; n=47) and metastatic OSCC (MOSCC; n=8). The Cav-1 expression was correlated to the age, site, areca use, stage, size, nodal involvement, and differentiation stage. Western blot was used to confirm the specificity of antibody and to follow changes in Cav-1 expression. RESULTS: The Cav-1 immunoreactivity increased significantly from 8% in NOM and 17% in NCMT to 53% in OPL and 79% in POSCC. In addition, lymph node metastasis (LNM) was present in 62% of Cav-1(+) POSCCs, but only in 10% of Cav-1(-) POSCCs. Remarkably, only 38% of MOSCCs had Cav-1 immunoreactivity. CONCLUSION: An increased Cav-1 expression is seen in the stepwise carcinogenesis from NOM, NCMT, OPL to POSCC. The decrease in expression from the POSCC to MOSCC indicates the value to explore its biphasic functions in oral carcinogenesis. Whether Cav-1 is an important predictor or prognosis for survival still awaits the extension of clinical follow-up.     

E-cad、CD44V6在口腔鳞癌组织中的表达及其相关性研究

目的 :分析E 钙粘蛋白 (E cadherin ,E cad)和CD44V6在口腔黏膜鳞癌及其癌变过程中的表达规律 ,探讨它们的异常表达与口腔黏膜癌变、转移的关系。方法 :采用免疫组织化学SP法分别检测E cad、和CD44V6在 17例正常口腔黏膜、6例口腔黏膜异常增生和 5 2例口腔黏膜鳞癌的不同表达。结果 :其中 ,E cad在正常口腔黏膜、口腔黏膜异常增生的阳性表达率明显高于在口腔黏膜鳞癌中的阳性表达率 ;而CD44V6在正常口黏膜、口腔黏膜异常增生的阳性表达率明显高于在口腔黏膜鳞癌中的阳性表达率 ;同时 ,E cad的阳性表达率随肿瘤的分化程度降低而降低 ,CD44V6的阳性表达率随肿瘤的分化程度降低而升高 ;E cad和CD44V6之间的关系表现为负相关 ,同时 ,CD44V6与肿瘤的转移密切相关。结论 :E cad和CD44V6在口腔黏膜鳞癌的分化和转移过程中起重要作用 ,CD44V6的表达与肿瘤的不良分化和转移密切相关 ,而E cad的表达则对患者有保护趋势。     

P120^ctn在口腔鳞癌中的表达及其与细胞黏附的关系

目的：对比口腔鳞癌（oral squamous-cell carcinoma,OSCC）与口腔正常黏膜中P120-连环蛋白（P120-catenin,P120^ctn）和E一钙粘蛋白（E—cadherin,E—cad）的表达,观察P120^ctn和E—cad的表达与口腔鳞癌临床病理参数之间的关系以及它们之间的相互关系。方法：选用人正常口腔黏膜组织26例OSCC标本49例,采用免疫组化方法检测P120^ctn和E—cad的表达。结果：在口腔鳞癌中P120^ctn和E—cad的正常表达率显著低于它们在正常口腔黏膜组织中的正常表达（P〈0．05）。有淋巴结转移组和肌层浸润组的OSCC组织P120^ctn及E-cad的正常表达显著低于无淋巴结转移组和黏膜及黏膜下层浸润组（P〈0．05）。OSCC组织中P120ctn异常表达组的E—cad正常表达率显著低于P120^ctn正常表达组（P〈0．05）,P120^ctn与E—cad高度相关（P〈0．01）。结论：P120^ctn和E—cad在OSCC中的表达具有相关性,且随组织病理改变而改变。     

Expression of E-cadherin in cervical lymph nodes from primary oral squamous cell carcinoma patients

BACKGROUND: Oral squamous cell carcinoma (OSCC) is the most common malignant tumor in oral and maxillofacial region with poor prognosis. E-cadherin plays a key role in cell-to-cell adhesion. E-cadherin expression in the metastatic cervical lymph node, especially in the micrometastatic cervical lymph node has seldom been reported in OSCC patients. OBJECTIVE: To investigate the E-cadherin expression in cervical lymph nodes from OSCC patients as well as its clinical significance. DESIGN: Thirty-three OSCC patients were involved in this study; among them, there were 28 males and 5 females, the age ranged from 34 to 78 years (mean 58.8 years). The most suspicious metastatic cervical lymph node (total 99 lymph nodes) from three cervical regions of each OSCC patient was selected for detection of E-cadherin using routine pathological examination and immunohistochemistry. RESULTS: Increased E-cadherin expression in the metastatic cervical lymph nodes was detected, which was diagnosed by routine pathological examination using HE staining. However, in the micrometastatic cervical lymph node, E-cadherin expression was negative. The survival rate of OSCC patients correlated with decreased E-cadherin expression (P=0.001), N stage (P=0.024) and tumor recurrence (P<0.001). Tumor recurrence is the only independent factor on the prognosis (RR=20.83 and P=0.014). CONCLUSIONS: Decreased E-cadherin expression in cancerous tissue correlates with the poor prognosis of OSCC patients. Detection of E-cadherin expression is useful to confirm the cervical lymph node metastasis and maybe useless to detect the cervical lymph node micrometastasis; further studies are encouraged to reveal the detail mechanism of E-cadherin expression in formation of lymph node metastatic focus.     

口腔鳞癌中间隙连接蛋白43和E-钙粘素表达及相关性研究

目的：探讨间隙连接蛋白43（Cx43）和E-钙粘素（E-cad）在口腔鳞癌中的表达及其相关性：细胞分化诱导剂全反式维甲酸（ATRA）对人舌鳞癌细胞株（Tea8113）中Cx43和E-cad表达的影响。方法：应用免疫组织、细胞化学结合免疫印迹（western blot）技术，观察口腔鳞癌组织中及ATRA对Tca8113细胞株进行培养及分化诱导后Cx43和E-cad的变化。结果：正常口腔鳞状上皮中Cx43和E-cad主要表达于细胞膜：在鳞癌组织中，Cx43和E-cad细胞膜表达与组织的分化程度、转移之间有显著性差异（Cx43：x^2=7．42、12．43，p〈0．05、p〈0．01；E-cad：x^2=7．79、9．688，p〈0．05、p〈0．01）。在鳞癌组织同一标本中Cx43和E-cad表达具有正相关性和一致性（r=0．577，p〈0．0005）；舌鳞癌细胞经ATRA诱导后，Cx43和E-cad蛋白表达增加。结论：Cx43和E-cad在口腔鳞癌的发生和发展过程中具有协同作用；ATRA可以通过上调Cx43和E-cad的表达，实现对肿瘤生长的抑制。     

口腔鳞癌中骨桥蛋白的表达及意义

目的:探讨口腔鳞癌(OSCC)组织中骨桥蛋白(osteopontin,OPN)的表达及其临床意义。方法:应用实时荧光定量PCR法(FQ-PCR)检测OSCC肿瘤组织和癌旁对照组织(n=16)中骨桥蛋白mRNA的表达;应用EnVisionTM法检测正常口腔黏膜(n=12)和OSCC患者肿瘤组织(n=59)中骨桥蛋白的表达,结合图像分析系统进行定量分析,应用SPSS11.5软件包进一步分析不同临床、病理指标下OSCC肿瘤组织骨桥蛋白的表达情况。结果:16例患者OPN在OSCC肿瘤组织中的表达,mRNA和蛋白水平均显著高于正常口腔黏膜(P<0.05)。59例蜡块标本的OPN表达在OSCC不同临床分期间、有无颈淋巴结转移间均有显著差异,而在OSCC高分化和中低分化者间无显著差异。结论:在OSCC中,OPN无论是分子还是蛋白水平,均存在过度表达,其表达水平与肿瘤临床分期以及有无淋巴结转移存在一定的相关性。     

Altered E-cadherin/beta-catenin expression in oral squamous carcinoma with and without nodal metastasis

OBJECTIVES: The aim of this study was to investigate the potential use of E-cadherin, a tumour-suppressor gene product involved in establishing cell-cell adhesion and one of its associated proteins, beta-catenin, as markers of nodal metastasis in oral squamous cell carcinoma (OSCC). MATERIALS AND METHODS: Thirty invasive OSCCs in patients with (n = 19) and without (n = 11) nodal metastases, as confirmed on histopathologic examination of the resected regional lymph nodes (n = 30), were examined for E-cadherin and beta-catenin expression by immunohistochemistry. RESULTS: There was a highly significant association (P < 0.0001) between E-cadherin and beta-catenin expression and tumour differentiation by conventional Broders' grading of the whole tumour. Irrespective of the nodal status and invasive tumour front (ITF) grading score, however, loss of expression was recorded at the ITF in 28 (93%) of 30 tumours and 22 (73%) of 30 tumours stained for E-cadherin and beta-catenin respectively. CONCLUSION: The results of this study suggest an association between loss of expression of E-cadherin and beta-catenin and a lower degree of differentiation; however, their use as markers of nodal metastasis in OSCC appears unreliable.     

Expression of E-cadherin, P-cadherin and N-cadherin in oral squamous cell carcinoma: correlation with the clinicopathologic features and patient outcome.

PURPOSE: Alteration of cadherin expression is associated with the loss of cellular differentiation, the acquisition of an invasive phenotype and a poor prognosis in many types of cancer. This study aimed to evaluate the immunoreactivity of E-, P- and N-cadherins (cad) in oral squamous cell carcinoma and to correlate their expression with clinicopathological features and clinical outcome. The interaction between the cadherins was also investigated. METHODS: A total of 71 tissue samples were examined by immunohistochemical methods on paraffin sections using specific antibodies. RESULTS: In the primary lesions and lymph node metastases, the immunoreactivity of E-cad was reduced and P-cad was over-expressed, but the expression of N-cad was negative (p<0.001, 0.01 and 0.05, respectively). The reduced primary E-cad expression was related to the invasion pattern and lymph node metastasis (p=0.046 and 0.037, respectively). However, the expression of cadherins did not appear to differ significantly in relation to the histological grade, invasion, tumour size, stage of oral SCC or tumour recurrence. A much greater reduction in the expression of E-cad was found in the positive N-cadherin group (p=0.008). Nonetheless, cadherin expression was not significantly associated with failure-free survival or overall survival in this experiment subset. CONCLUSION: The reduced E-cad expression and the aberrant N-cad expression are closely associated with each other in oral cancer cases, and this suggests that cadherin switching from E. cad to N. cad may play a critical role in cancer development and metastasis.     

Expression of hepatocyte growth factor and c-met protein is significantly associated with the progression of oral squamous cell carcinoma in Taiwan

BACKGROUND: Hepatocyte growth factor (HGF) is a pleotropic growth factor that regulates cell proliferation, migration, survival, tumor angiogenesis, and tumor cell invasion and metastasis. Its diverse biological effects are mediated through its interaction with its receptor, c-met protein. METHODS: In this study, we examined the expression of HGF and c-met protein in 93 specimens of oral squamous cell carcinoma (OSCC), 10 specimens of oral epithelial dysplasia (OED), 14 specimens of oral epithelial hyperkeratosis (OEH), and 16 specimens of normal oral mucosa (NOM) by immunohistochemistry. The HGF and c-met labeling indices (LIs) in OSCC, OED, OEH, and NOM groups were calculated and compared between groups. The correlation between the expression of HGF or c-met in OSCCs and clinicopathological parameters, or survival of OSCC patients was analyzed statistically to investigate the possible influence of HGF or c-met on the progression and prognosis of OSCCs in Taiwan. RESULTS: Positive HGF or c-met staining was mainly cytoplasmic. The mean HGF LI increased significantly from NOM (3.1 +/- 5.1%) through OEH (32.5 +/- 19.8%) and OED (52.0 +/- 19.3%) to OSCC (71.9 +/- 28.6%; P = 0.000). The mean c-met LI also increased significantly from NOM (25.8 +/- 30.8%) and OEH (34.4 +/- 19.3%) through OED (53.0 +/- 20.0%) to OSCC (73.0 +/- 29.4%; P = 0.000). Statistical analysis showed that the c-met LI in either the tumor center or invasion front was significantly associated with T status, N status, and clinical staging of OSCC. However, only the HGF LI in the tumor invasion front was significantly correlated with N status and clinical staging of OSCC. CONCLUSION: Our results suggest that the expression of HGF and c-met protein is an early event in oral carcinogenesis in Taiwan. The HGF LI in the tumor invasion front and the c-met LI in either the tumor center or invasion front can predict the progression of OSCCs in Taiwan.     

Pinx1 在口腔鳞癌中的表达及意义

目的:研究Pinx1在口腔鳞状细胞癌(OSCC)中的表达及意义。方法:免疫组织化学染色检测Pinx1在60例OSCC和20例正常口腔黏膜组织(NOM)中的表达情况。结果:Pinx1在NOM上皮中高表达,高表达率为100.00%,在OSCC中高表达率为65.00%,Pinx1高表达率明显低于NOM(P＜0.05),随着分化程度的降低,Pinx1表达呈降低趋势(P＜0.05),伴有淋巴结转移的病例中Pinx1表达水平显著低于不伴有淋巴结转移的OSCC(P＜0.05),Pinx1的表达情况与患者性别年龄无关。结论:Pinx1可能与OSCC的发生、发展及转移有关。     

E-钙黏蛋白在口腔鳞癌组织中的表达及意义

目的　通过观察E -钙黏蛋白 (E -cad)在正常口腔黏膜、口腔黏膜不典型增生和口腔黏膜鳞癌的不同表达 ,分析它们在口腔黏膜鳞癌及其癌变过程中的表达规律 ,探讨它们的异常表达与口腔黏膜癌变、转移的关系。方法　采用免疫组化SP法分别检测E -cad在 17例正常口腔黏膜、6例口腔黏膜不典型增生和 5 2例口腔黏膜鳞癌的不同表达。结果　E -cad在正常口腔黏膜、口腔黏膜不典型增生的阳性表达率明显高于在口腔黏膜鳞癌中的阳性表达率 ,E -cad的阳性表达率随肿瘤的分化程度降低而降低。结论　E -cad在口腔黏膜鳞癌的分化和转移过程中起重要作用。     

蛋白激酶C激活对口腔鳞癌细胞上皮-间质转化的影响

目的:利用舌癌细胞系HN12探索激活蛋白激酶C(protein kinase C,PKC)对口腔鳞癌细胞上皮-间质转化(epithelial-mesenchymal transition,EMT)的影响.方法:采用质粒pCMV6-AC-GFP-P120ctn转染HN12细胞,使HN12过表达P120-连环蛋白(P120-catenin,P120ctn),再加入蛋白激酶C(protein kinase C,PKC)激活剂佛波酯(phorbol 12-myristate 13-acetate,PMA),采用实时荧光定量PCR、Western blot检测PMA处理前后PKC、P120ctn、E-cad的mRNA和蛋白表达,通过Transwell细胞侵袭及细胞迁移试验等方法检测细胞的迁移和侵袭能力.结果:当PKC被PMA活化时,细胞形态发生改变,细胞中P120ctn的表达显著降低,E-钙黏蛋白(E-cadherin,E-cad)也随之降低,间质标记蛋白N-钙黏蛋白(N-cadherin,N-cad)和波形蛋白(Vimentin,Vim)的mRNA和蛋白表达水平显著升高,肿瘤细胞的迁移和侵袭能力显著提高(P＜0.05).结论:PKC可能通过磷酸化调节P120ctn的表达,参与细胞黏附的调控,促进EMT,在口腔鳞癌细胞的迁移和侵袭过程中发挥作用.     

口腔黏膜癌前病变及鳞癌中Fas/FasL的表达研究

目的 :研究凋亡相关基因Fas/FasL在口腔正常粘膜、上皮单纯增生、上皮异常增生和鳞癌中的表达及意义。方法 :采用SABC免疫组织化学方法检测正常口腔粘膜 ( 10例 ) ,上皮单纯增生 ( 8例 ) ,上皮异常增生 ( 2 0例 ) ,鳞癌 ( 32例 )中Fas/FasL的表达。结果 :在正常口腔粘膜中Fas表达于棘层和粒层细胞的胞膜 ;FasL局限于基底层细胞的胞膜和胞浆。上皮异常增生中随异常增生程度的增高 ,Fas表达降低 ;FasL表达增强 ,甚至遍布上皮全层。鳞癌组中Fas表达明显低于正常组 (P <0 .0 5 ) ,且与组织学分级呈正相关 ;FasL表达明显高于正常组 (P <0 .0 5 ) ,且与组织学分级呈负相关。结论 :Fas在调节鳞状上皮细胞自我更新中具有重要作用。Fas表达水平下调 ,FasL上调 ,可能是口腔上皮癌变过程中的一个早期事件。Fas/FasL是肿瘤细胞逃逸肿瘤反应T细胞攻击而获得免疫赦免的重要机制之一。     

Phospholipase C‐γ1 expression correlated with cancer progression of potentially malignant oral lesions

Background: Phospholipase C‐γ1 (PLCγ1) is required for cellular migration during tumor progression and invasion of oral squamous cell carcinoma (OSCC) cells. The objective of the current study was to determine immunoexpression pattern of PLCγ1 in oral potentially malignant lesions (OPLs) and evaluate PLCγ1 usefulness as a biomarker for predicting clinical behavior in the carcinogenesis of OPL. Methods: In a retrospective follow‐up study, the expression pattern of PLCγ1 protein was determined using immunohistochemistry in samples from 68 patients, including untransformed cases (n = 38) and malignant‐transformed cases (n = 30). The corresponding post‐malignant lesions (OSCCs) were also performed. Results: We observed that elevated expression of PLCγ1 in 40 of 68 (59%) general OPLs and 23 of 30 (77%) OSCCs compared with that in normal oral mucosa. Kaplan–Meier analysis revealed that patients with PLCγ1 positivity had a significantly higher incidence of OSCC than those with PLCγ1 negativity. Cox regression analysis revealed that PLCγ1 expression patterns were significantly associated with increased risk of malignant progression. In addition, the correlation between PLCγ1 expression in pre‐malignant OPL and that in post‐malignant OSCC was significant (P = 0.004). Conclusion: These data indicate that PLCγ1 expression in OPL correlated with oral cancer progression, and PLCγ1 may serve as a useful marker for the identification of high‐risk OPL into OSCC.     

口腔黏膜癌前病变和口腔鳞癌组织Fas/FasL的表达及其意义

目的：研究调亡相关基因Fas／FasL在正常口腔黏膜、上皮异常增生和口腔鳞癌组织中的表达及意义。方法：应用免疫组织化学方法检测10例正常口腔黏膜、26例上皮异常增生、38例口腔鳞癌组织及肿瘤浸润淋巴细胞（TIL）中Fas／FasL的表达。结果：Fas在正常口腔黏膜中广泛表达;上皮异常增生和鳞癌组织表达明显下调（P〈0．05）;Fas表达与口腔鳞癌分化程度有关;FasL在正常口腔黏膜不表达;上皮异常增生和鳞癌组织表达明显上调（P〈0．05）;FasL表达与口腔鳞癌分化程度无关（P〉0．05）;TIL细胞Fas、FasL阳性表达率为81．6％和84．2％。结论：Fas表达与口腔黏膜上皮细胞的自然分化成熟、衰老及口腔鳞癌的形成和肿瘤的恶性度有关;FasL的表达上调可能是口腔鳞癌组织免疫反攻击的体现;Fas、FasL可作为监测口腔上皮癌变的标记物。     

抑制蛋白激酶C对口腔鳞癌细胞迁移和侵袭的影响

目的:利用舌癌细胞系HN4,探讨蛋白激酶C(protein kinase C,PKC)、P120-连环蛋白(P120-catenin,P120ctn)和E-钙黏蛋白(E-cadherin,E-cad)在口腔鳞癌中的相互关系及其在肿瘤细胞侵袭和转移中的作用机制.方法:采用质粒pGFP-V-RS-P120ctn shRNA转染HN4,使HN4中P120ctn的表达显著降低,再使用星孢菌素(staurosporine,STS)抑制PKC的表达,进行PKC、P120ctn和E-cad mRNA和蛋白水平的检测;通过Transwell细胞侵袭及细胞迁移试验等方法,检测PKC被抑制前、后肿瘤细胞迁移和侵袭能力的变化.采用SPSS18.0软件包对数据进行统计学分析.结果:当PKC被STS抑制时,HN4/shP120ctn细胞中P120ctn的表达显著升高,E-cad的表达也随之升高,肿瘤细胞的迁移和侵袭能力显著降低(P均＜0.05).结论:PKC可能参与了P120ctn和E-cad表达的调节,与细胞黏附的调控有关,进而在HN4细胞的迁移和侵袭过程中发挥作用.     

Serum vitamin D levels of patients with oral squamous cell carcinoma (OSCC) and expression of vitamin D receptor in oral precancerous lesions and OSCC

Background: Resistance to programmed cell death (apoptosis) is a crucial factor for the carcinogenesis of oral squamous cell carcinoma (OSCC). Vitamin D (calcitriol) may overcome apoptosis resistance in tumor cells of OSCC. Vitamin D receptor (VDR) expression in oral precancerous lesions of OSCC has not been analyzed and serum vitamin D level seems to be a predictor of cancer development. Material and Methods: Expression of VDR was analyzed in normal oral mucosa (n=5), oral precursor lesions (simple hyperplasia, n=11; squamous intraepithelial neoplasia, SIN I-III, n=35), and OSCC specimen (n=42) by immunohistochemistry (IHC). Moreover, serum vitamin D levels were measured by 25(OH)D3 (calcidiol) in patients with OSCC (n=42) and correlated with IHC results. Results: Expression of VDR was significantly increased in precancerous and OSCC compared with normal tissue. Compared with SIN I-III lesions VDR expression significantly decreased in OSCC. Severe vitamin D deficiency was detected in our OSCC patient cohort but there was no significant correlation analyzed between serum vitamin D levels and corresponding immunohistochemically detected VDR expression in OSCC. Conclusions: Our survey provides the first evidence of VDR expression in precancerous lesions of OSCC. Apoptosis induction of VDR+ cells in oral precancerous lesions and OSCC by natural vitamin D or synthetic vitamin D compounds could be useful for chemoprevention. Moreover, systemically and/or locally applied, these compounds may act as sensitizers for apoptosis mediated by radio-, and chemotherapy treatment in OSCC. Key words:Oral cancer, oral precancer, lichen planus, leukoplakia, apoptosis, serum 25(OH)D3, vitamin D receptor, chemoprevention, multistep carcinogenesis.     

P53蛋白在口腔鳞状细胞癌发生过程中的表达及意义

本研究采用微波处理暴露抗原,通过免疫组化ＬＳＡＢ方法对ＮＯＭ６例,ＯＰＬ２８例,ＯＳＣＣ３４例中Ｐ５３蛋白表达进行观察,其ＮＯＭ无表达;在ＯＰＬ中的表达率为８２％随着上皮异常增生的程度加重,表达率呈上升趋热（Ｐ〈０．０５）;而在ＯＳＣＣ中表达率为６５％,随着肿瘤的分极增加,表达率呈下降趋势（Ｐ〈０．０５）。结果表明,Ｐ５３蛋白在ＯＰＬ和ＯＳＣＣ中呈异常表达,并与ＯＰＬ程度和ＯＳＣＣ分级有关,Ｐ５３     

口腔鳞状细胞癌组织中C-erbB-2蛋白表达的免疫组化定量分析

目的 探讨C-erbB-2蛋白在口腔鳞状细胞癌组织中表达的意义。方法 采用单克隆抗体免疫组化S-P法，对58例口腔鳞状细胞癌和12例正常口腔粘膜进行免疫组化染色，检测C-erbB-2基因的表达情况，并采用全自动图像分析仪对染色结果进行定量分析。结果 口腔鳞状细胞癌中C-erbB-2的表达高于正常粘膜，高分化口腔鳞状细胞癌表达低于中低分化者，颈淋巴结转移组高于未转移组。结论 C-erbB-2在口腔鳞状细胞癌中存在过度表达，其表达程度越高，提示肿瘤的恶性肿瘤程度越高，越容易发生转移或局部浸润。