Prognostic value of EGFR family expression in lymph node-negative esophageal squamous cell carcinoma patients

The human epidermal growth factor receptor (EGFR) family has been widely studied in cancer, however, the prognostic role of EGFR family expression in lymph node-negative esophageal squamous cell carcinoma (ESCC) patients have not been invalidated. This study was designed to determine the prognostic value of EGFR family expression in a population of lymph node-negative ESCC patients treated with curative resection. EGFR family protein expression was examined by immunohistochemical analysis of tissue microarrays of 94 patients with lymph node-negative ESCC after radical esophagectomy with three-field lymphadenectomy. Survival differences were compared using Kaplan–Meier analysis. Cox regression analyses were performed to determine the prognostic factors for overall survival and disease-free survival (DFS). ErbB4 expression was found to be an independent prognostic factor for DFS in patients without lymph node metastasis; increased ErbB4 expression was associated with decreased DFS. Additionally, patients with high ErbB4 expression tended to have worse overall survival. EGFR, ErbB2 and ErbB3 expression were not significantly associated with survival in lymph node-negative ESCC patients. Increased ErbB4 immunohistochemical expression was associated with poor prognosis in lymph node-negative ESCC patients.     

表皮生长因子受体和P53与食管鳞状细胞癌放疗敏感性的关系

目的 分析食管鳞状细胞癌患者标本中表皮生长因子受体(EGFR)和P53表达水平与其临床病理特征的相关性,探讨术前放疗对EGFR和P53表达的影响,为临床食管鳞状细胞癌手术联合放疗的治疗策略提供理论依据.方法 采用免疫组织化学方法检测食管鳞状细胞癌患者标本中EGFR、P53蛋白的表达水平,分析其表达与食管鳞状细胞癌临床病理参数的关系,对比术前放疗对患者癌组织中EGFR和P53表达水平的影响.结果 与正常食管黏膜上皮组织相比,食管鳞状细胞癌组织中EGFR和P53的表达水平均显著升高;食管鳞状细胞癌组织中EGFR和P53的表达均与其组织学分级、浸润程度、有无区域淋巴结转移呈正相关;术前放射治疗可显著降低食管鳞状细胞癌组织中EGFR和P53的表达水平.结论 在食管鳞状细胞癌中,EGFR和P53的表达水平与其临床病理特征有密切关系,且呈正相关,检测两种蛋白的表达水平对食管鳞状细胞癌的恶性程度及预后判断具有重要的临床意义.     

表皮生长因子受体在口腔鳞癌组织中的表达及意义

目的：研究表皮生长因子受体（ＥＧＦＲ）在口腔鳞癌组织中的表达及其临床病理学意义。方法：采用免疫组化Ｓ－Ｐ法对６５例不同分化的口腔鳞癌组织及１０例正常口腔粘膜组织进行ＥＧＦＲ检测。结果：ＥＧＦＲ在鳞癌组织中呈异质性表达,其阳性率（６１．５％）明显高于正常口腔粘膜组织（Ｐ〈０．０１）;ＥＧＦＲ表达状况与鳞癌组织学分级,区域淋巴结转移及患者预后间存在相关关系（Ｐ〈０．０１或０．０５）。结论：ＥＧＦＲ在口     

Nuclear PKM2 expression predicts poor prognosis in patients with esophageal squamous cell carcinoma

Esophageal squamous cell carcinoma (ESCC) is one of the most common tumors worldwide, with a high malignant degree and poor prognosis. The present study aims to investigate the relationship between pyruvate kinase M2 (PKM2) expression and the prognosis of patients with ESCC. The expression of PKM2 in 86 cases of esophageal carcinoma tissues was tested using immunohistochemistry. The relationship between PKM2 expression and clinical pathological parameters, and their effects on the prognosis of patients with ESCC were analyzed. The expression levels of PKM2 in both cytoplasm and nucleus of ESCC tissues were significantly higher than those in paracancerous tissues (P = 6.73 × 10⁻⁹ and 4.32 × 10⁻⁶, respectively). The Kaplan–Meier analysis showed that nuclear PKM2 expression was closely related to the survival of patients with ESCC (P = 0.005). Patients with high PKM2 expression in the nucleus had significantly shorter survival times than those with low PKM2 expression in the nucleus (hazard ratio for death, 2.358; 95% confidence interval, 1.156–4.812; P = 0.018). No other significant difference was found between PMK2 expression and clinico-pathological features of ESCC patients (all P > 0.05). In conclusion, high PKM2 expression in the nucleus is essential in the pathogenic process of ESCC and may be used to predict the prognosis of patients with ESCC.     

Association of Kruppel-like factor 4 expression with the prognosis of esophageal squamous cell carcinoma patients

Objective: To investigate the association of Kruppel-like factor 4 (KLF4) expressions with the prognosis of esophageal squamous cell carcinoma (SCC) patients. Methods: Ninety-eight cases of esophageal carcinoma patients were enrolled. The expression of KLF4 in the esophageal SCC and normal esophageal mucosa tissues were examined by immunohistochemistry. The correlations between the expression of KLF4 protein and patients’ clinical characteristics and prognosis were analyzed. Results: We observed higher expressed KLF4 in normal esophageal mucosa tissues than esophageal SCC tissues, with positive rate of 82.7% (81/98) and 43.8% (43/98) respectively. In patients with lymphatic metastasis, the positive rate of KLF4 was 24.4% (10/41), whereas it was 57.9% (33/57) in patients without lymphatic metastasis, and the difference was significant (x² = 10.871, P = 0.001). The positive rates of KLF4 were 62.5% (5/8), 53.1% (26/49) and 29.3% (12/41) in stage I, II and III patients, respectively. There were no correlations between the expression of KLF4 and gender, age, tumor size, location, differentiation grade and infiltration depth. The 5-year survival rates and median survival times were 48.8% and 25.5%, and 55 and 26 months for the patients with KLF4 positive and negative expression, respectively. There were significant differences between the patients with KLF4 positive expression and negative expression in the 5-year survival rates and median survival times (x² = 5.747 and 4.493, P = 0.017 and 0.034). Conclusion: KLF4 might act as a tumor suppressor in esophageal SCC and the expression status of KLF4 could be considered as a prognosis predictor for esophageal SCC patients.     

Association of p53 expression with prognosis in patients with esophageal squamous cell carcinoma

It has been well accepted that p53 overexpression is associated with advanced stages of cancer. However, the prognostic role of p53 overexpression in esophageal squamous cell carcinoma (ESCC) remains unclear. To investigate the prognostic role of p53 overexpression in patients with ESCC, a retrospective cohort study of 136 ESCC patients was carried out. The expression of p53 protein in tumor tissues was investigated immunohistochemically. Positive expression of p53 protein was detected in 57 ESCC patients (41.9%). The p53 overexpression was associated with smoking (P < 0.001), tumor differentiation (P < 0.001), and tumor size (P < 0.001). In the Kaplan-Meier analysis, patients with p53 overexpression had significantly shorter overall survival than those patients with negative p53 expression (log-rank P < 0.001). Multivariable analysis by Cox regression model further showed that p53 overexpression was a significantly independent predictor of poorer overall survival (hazard ratio [HR] = 1.91; 95% confidence interval [95% CI] 1.03-3.54, P = 0.04). Thus, p53 overexpression is associated with poor prognosis in patients with early stage esophageal squamous cell carcinoma, and it’s a significantly independent predictor of poorer overall survival.     

Mnk2蛋白水平与食管鳞癌预后的相关性

目的:检测丝裂原活化蛋白激酶相互作用激酶2(mitogen-activated protein kinase-interacting kinase-2,Mnk2)在食管鳞状细胞癌中的表达水平,并探讨其与患者生存预后的相关性。方法:收集临床食管鳞癌标本86例及癌旁正常食管组织54例,应用Western blot法和免疫组化SP法检测肿瘤组织及正常食管黏膜组织中Mnk2蛋白表达水平,并用Kaplan-Meier生存曲线和Cox比例风险回归模型的方法探究其与食管鳞癌患者预后的关系。结果:Mnk2在食管癌组织中呈高表达,并且Mnk2蛋白表达与食管鳞癌的TNM分期密切相关(P0.05),同时Mnk2蛋白高表达组的无疾病进展生存期和总生存期均少于Mnk2低表达组,多因素分析提示Mnk2是食管鳞癌的独立预后因子。结论:Mnk2在食管鳞癌组织中的表达与TNM分期有关,同时可作为预测食管鳞癌患者预后的指标。     

Altered expression and localization of desmoglein 3 in esophageal squamous cell carcinoma

Desmoglein 3 (DSG3), a transmembrane cadherin of the desmosomal cell–cell adhesion structure, plays vital roles in the maintenance of normal epithelial tissue architecture. Reports implicating a role for DSG3 expression in cancer are few and contradictory. In this study, immunohistochemical staining was employed to investigate DSG3 expression and subcellular localization in esophageal squamous cell carcinoma (ESCC), and to correlate changes with clinical characteristics. Results indicate that in normal squamous cell epithelia, strong DSG3 immunoreactivity was observed in the Stratum spinosum, and localization occurred only at the cell membrane. In ESCC, DSG3 immunoreactivity displayed an abnormal cytoplasmic localization that was correlated with cell differentiation (P = 0.018). Most strikingly, in 74.1% of the tumors, DSG3 expression was up-regulated and correlated with regional lymph node metastasis (P = 0.036). Moreover, in patients without lymph node metastasis, cytoplasmic localization of DSG3 correlated with poor prognosis (P = 0.044). These results suggest that DSG3 is involved in the development of ESCC and imply that DSG3 overexpression is likely to be an essential contributor to the aggressive features of esophageal cancer.     

Genetic variation in miR-100 rs1834306 is associated with decreased risk for esophageal squamous cell carcinoma in Kazakh patients in northwest China

MicroRNAs (miRNAs) are a family of small noncoding RNAs that act as oncogenes and tumor suppressors. Single nucleotide polymorphisms (SNPs) in miRNAs may be associated with changes in phenotype and function. The aim of this study was to verify whether genetic variations in candidate microRNA (miRNA or miR) genes could contribute to esophageal squamous cell carcinoma (ESCC) susceptibility. A case-control study in 248 Kazakh patients with ESCC and 300 frequency matched control subjects was carried out to examine the potential association of six miRNA (miR-100 rs1834306, miR-34b/c rs4938723, miR-375 rs6715345, miR-146a rs2910164, miR-423 rs6505162 and miR-373 rs12983273) polymorphisms with risk of ESCC. We found that miR-100 rs1834306 T>C polymorphism was associated with a significant decreased risk of ESCC. In the recessive model, when the miR-100 rs1834306 TT/TC genotypes were used as the reference group, the CC homozygote genotype was associated with a significant decreased risk for ESCC (adjusted OR=0.495, 95% CI: 0.349-0.702, P=8.05×10^-5). In the dominant model, when the miR-100 rs1834306 TT genotypes was used as the reference group, the TC/CC genotype were associated with a borderline statistically decreased risk for ESCC (adjusted OR=0.665, 95% CI: 0.430-1.031, P=0.067). In addition, the miR-100 rs1834306 C allele in the Kazakh population was significantly associated with decreased risk of ESCC (OR=0.609, 95% CI: 0.48-0.78, P=8.37×10^-5). These findings indicated that functional polymorphism miR-100 rs1834306 C>T might contribute to decreased ESCC risk.     

PINCH expression and its significance in esophageal squamous cell carcinoma

Particularly interesting new cysteine-histidine rich protein (PINCH), as a newly discovered protein of LIM family members, may play a role in signal transduction of integrin and growth factor, and involved in the incidence and development of tumors. PINCH protein is overexpressed in tumor-associated stroma of several types of tumors. However, there is no study of the PINCH in esophageal cancer, therefore we investigated PINCH expression in esophageal squamous cell carcinomas and its clinicopathological significance in the patients. PINCH expression was immunohistochemically examined in 20 normal esophageal samples and 64 esophageal squamous cell carcinomas. The results showed that PINCH expression in the stroma of cancers was heterogeneous, and its positive rate (56%) was higher than that of normal esophageal mucosa (5%, p<0.0001). The stronger staining was observed at the invasive edge of tumor when compared to the inner area of tumor. The rate of positive PINCH (90%) in the cases with lymph node metastasis was higher than that (41%) in the cases without metastasis (p<0.0001). PINCH expression was not correlated with patients' gender, age, tumor location, size and differentiation (p>0.05). The results suggest that PINCH protein may be a marker of tumor associated-stroma involving tumor development, and predicting the ability of invasion and metastasis of esophageal squamous cell carcinoma.     

Expression of Wnt11 and Rock2 protein with clinical characteristics of esophageal squamous cell carcinoma in Kazakh and Han patients

Background: Esophageal squamous cell carcinoma (ESCC) is one of the most malignancies with a very poor outcome in China. Wnt11 and Rock2, new identified proteins highly associated with metastasis of many cancers, which were never reported in esophageal squamous cell carcinoma (ESCC). Here we measured the expression levels of Wnt11 and Rock2 in tissues from 265 patients with ESCC. Immunohistochemical staining was employed to detect the correlation of Wnt11 and Rock2 expression with clinicopathological features. Methods: The expression of Wnt11 and Rock2 was detected by immunohistochemistry in esophageal squamous cell carcinomas and normal esophageal tissues. A chi-square test was used to assess the statistical significance of the correlations between Wnt11, Rock2 expression and different clinicopathological parameters, respectively. Results: The high-expression of Wnt11 and Rock2 was observed in ESCCs. Seventy-five cases of ESCC (51.7%) showed a positive expression of Wnt11, which indicated a significant association with the AJCC stage (P=0.007). Ninety-eight cases of ESCC (65.5%) showed a positive expression of Rock2, which indicated a significant association with ethnic background. There were no close correlations between Rock2 expression and gender, tumor location, AJCC stage, lymph node metastasis. Specifically, the expression of Rock2 was significantly different between Hans and Kazaks ethnicities (P=0.000). In Kaplan-Meier curve analysis, no significant correlation was observed between the expression of Wnt11, Rock-2 and the poor prognosis of ESCCs. Conclusion: Our finding suggests that the over-expression of Rock2 may play an important role in the carcinogenesis and progression, and may become a new underlying molecular marker in the diagnosis and treatment in ESCC.     

Overexpression of PLCE1 in Kazakh esophageal squamous cell carcinoma: implications in cancer metastasis and aggressiveness

Three recent large‐scale genome‐wide association studies (GWAS) in Chinese Han populations have identified an esophageal squamous cell carcinoma (ESCC) susceptibility locus within phospholipase C epsilon 1 (PLCE1) gene, which encodes a phospholipase involved in intracellular signaling. The expressed PLCE1 in ESCC, however, are inconsistent. This study examined PLCE1 expression by immunohistochemistry (IHC) from 110 ethnic Kazakh ESCC patients and 50 from adjacent normal esophageal tissues (NETs). The expressed PLCE1 was localized in cytoplasm, especially in the peripheral layers of cancer cell nests, which was significantly higher in tumors than in NETs (p < 0.001). Increased expression of PLCE1 was correlated with advanced tumor‐node‐metastasis (TNM) stages (p = 0.015) and lymph node metastasis (p = 0.003) in patients with ESCC. Of the 110 patients, we examined 50 paired ESCC tissues and corresponding NETs by quantitative RT‐PCR (polymerase chain reaction) and the mean mRNA level of PLCE1 in ESCC was 1.85‐fold higher compared with those in corresponding NETs (p = 0.0012). Meanwhile, 4 of 5 ESCC cell lines also showed elevated expression of PLCE1 mRNA. Furthermore, elevated expression of PLCE1 mRNA in Kazakh ESCC was associated with its immunoreactivity (ρ = 0.297, p = 0.040), lymph node metastasis (p < 0.001), and advanced TNM stages of ESCC (p = 0.013). To our knowledge, this study demonstrates for the first time that PLCE1 overexpression correlates with lymph node metastasis and advanced TNM stages of Kazakh ESCC, implicating a role of PLCE1 in cancer metastasis and aggressiveness in ethnic Kazakh patients with ESCC. Furthermore, the current findings may warrant investigations into whether inhibiting PLCE1 could be a strategy for targeted anticancer therapy particularly for Kazakh ESCC.     

Prognostic value of osteopontin expression in esophageal squamous cell carcinoma: A meta-analysis

ObjectiveTo explore the prognostic role of osteopontin (OPN) overexpression in esophageal squamous cell carcinoma (ESCC).MethodsThe PubMed, EMBASE, The Cochrane Library, China National Knowledge Infrastructure, Wanfang, Chinese Biomedical Data (CBM) and VIP databases were searched from the establishment dates of the databases to March 31, 2019, for potentially related studies. Stata 12.0 software was used for statistical analyses, and the hazard ratios (HRs) with 95% confidence intervals (CIs) were combined to assess the correlation of OPN overexpression with the overall survival (OS) and progression-free survival (PFS) of ESCC patients.ResultsA total of 8 studies involving 811 patients from China or Japan were included. OPN overexpression was demonstrated to be significantly associated with poor OS (HR = 1.86, 95% CI: 1.22–2.83, P = 0.004), with high heterogeneity (I² = 61.2%, P = 0.012), and poor PFS (HR=1.63, 95% CI: 1.08–2.47, P = 0.020), without heterogeneity (I² = 0.0%, P = 0.839). Subgroup analysis results were similar to the pooled results.ConclusionOPN overexpression might serve as a promising independent prognostic risk factor in Chinese and Japanese ESCC patients. However, more well-designed studies enrolling more patients are still needed to verify our findings.     

Epidermal growth factor receptor (EGFR) and squamous cell carcinoma of the skin: molecular bases for EGFR-targeted therapy

Cutaneous squamous cell carcinoma (SCC) ranks second in the frequency of all skin tumors. Its incidence has risen significantly due to an increased sun exposure and the number of immunocompromised patients. It has a well-defined progression with known precursor lesions called actinic keratosis. The degree of cellular differentiation, tumor thickness, location, and other features has prognostic value. It has a better prognosis than mucosal SCC of the head and neck, also called head and neck squamous cell carcinoma (HNSCC).Ultraviolet light plays a fundamental role as an initiator and promoter of carcinogenesis of SCC, allowing the accumulation of genetic alterations that allows a selective growth advantage. The TP53 (p53) gene often mutates and Ras is frequently activated, but with low frequency of mutations. Normally, the extracellular signals determine whether the cells move from a quiescent state into an active proliferative state. In tumor cells an increase in the production of growth factors and its receptors can be often seen that gives rise to such an autocrine circuit facilitating cellular division. Recently, frequent mutations in the epidermal growth factor receptor (EGFR) have been detected in lung cancer, mainly deletions in exon 19 and L858R mutation in exon 21. These are located at the EGFR tyrosine kinase domain (TK). EGFR TK mutations produce activation of the signaling pathways downstream and preferentially activated antiapoptotic pathways (PI3K/AKT, JAK-STAT and ERK/MAPK). These mutations are correlated with the clinical response of patients to tyrosine kinase inhibitors (gefinitib and erlotinib), because the tumor cells are addicted to the constant activation of specific signaling pathways. Glioblastoma shows another EGFR mutation (EGFRvIII), corresponding to a deletion of the extracellular domain, and it is present in 24-67% of these tumors. This variant has been found in 42% of HNSCC, related to the poor response to monoclonal antibody cetuximab.Many observations show that there are abnormalities in the expression of epidermal growth factor receptor (EGFR) and/or its ligands in HNSCC with frequent activation of multiple pathways downstream EGFR, and unrelated to RAS mutation. This suggests the possibility of activation by mutation or overexpression of a component of the pathway located upstream-Ras. While in other tumors, especially lung cancer and glioblastoma, the EGFR mutations are frequent genetic events, it is unknown whether EGFR is mutated or amplified in SCC of the skin and what would be its pathogenic role in this malignancy and its precursors.     

Clinicopathological and predictive significance of SIRT1 and peroxisome proliferator-activated receptor gamma in esophageal squamous cell carcinoma: The correlation with EGFR and Survivin

SIRT1 (silent mating type information regulation 2 homolog 1) is an enzyme that deacetylates proteins that contributes to cell survival and angiogenesis. Peroxisome proliferator-activated receptor ? (PPAR ?) is a member of the nuclear steroid hormone receptor superfamily and regulates cell apoptosis and proliferation. The functional roles of SIRT1 and PPAR ? in tumor progression remain controversy. This study aims to investigate the roles of SIRT1 and PPAR ? in esophageal squamous cell carcinoma (ESCC), as well as correlation with expression of EGFR and Survivin. Here, we analyzed the protein expression of SIRT1 and PPAR ? in tumor microarray with ESCC and its associations with clinicopathological parameters and overall survival. Both SIRT1 and PPAR ? were highly expressed in tumor tissues comparing with non-cancerous epithelium. High expression of SIRT1 was positively correlated with advanced TNM stage and poor outcome, while high expression of PPAR ? was positively related with tumor grading, not with patients’ prognosis. In addition, the high expression of SIRT1 was positively correlated with overexpression of EGFR, not related with PPAR ? or Survivin expression status. These data suggests SIRT1 may serve as a predictor of poor prognosis in ESCC, and its mediated tumor-promoting role might be associated with the overexpression of EGFR protein in ESCC.     

Chemokine/chemokine receptor interactions contribute to the accumulation of Th17 cells in patients with esophageal squamous cell carcinoma

Chemokine/chemokine receptor interactions play a critical role in lymphocyte infiltration of tumors. Recent studies suggest that Th17 cells accumulate within many types of tumors, although the mechanisms that control this are unclear. We studied the distribution and phenotypic features of Th17 cells chemokine receptors, as well as the mRNA levels of CCL2, CCL17, CCL20, and CCL22 in tumors of patients with esophageal squamous cell carcinoma. We found that Th17 cells accumulated in tumors, and high expressions of CCR4, CCR6 were detected in Th17 cells. Levels of the chemokines CCL17, CCL20, and CCL22 in tumors were significantly higher than in tumor-free tissues, and were positively correlated with the distribution of Th17 cells in tumors. Furthermore, an in vitro migration assay showed that CCL17, CCL20 and CCL22 had chemotactic effects on tumor-derived Th17 cells. In conclusion, the CCR4-CCL17/22 and CCR6-CCL20 axis might play an important role in Th17 cell infiltration of tumors.     

肺鳞状细胞癌中EGFR和ERK2共表达与ERK2激活的关系

目的:从蛋白和mRNA水平研究EGFR和ERK2在肺鳞状细胞癌(SCC)中的共表达及其与ERK2激活之间的关系。方法:分别采用Western blotting和反转录PCR(RT-PCR)对20例SCC及其配对正常肺组织中的EGFR和ERK2蛋白和mRNA的表达进行检测,ERK2的活性采用免疫沉淀和激酶反应进行测定。结果:在配对的正常肺组织中EGFR和ERK2的mRNA和蛋白的表达几乎检测不到或仅有少量表达,但在20例肺癌组织中表达显著上调,其中肺癌组织中ERK2蛋白的表达比正常肺组织上调3-5倍;肺癌组织中ERK2的活性也比正常肺组织显著增加。结论:在SCC中,EGFR和ERK2的蛋白共表达发生了上调,主要归因于其基因转录水平的激活,并可能最终导致肺癌组织中ERK2活性的增加。     

ADAMTS-6 is a predictor of poor prognosis in patients with esophageal squamous cell carcinoma

Background

A disintegrin and metalloprotease with thrombospondin motif (ADAMTS) enzymes play important roles in cell functions including adhesion, invasion, migration, and proliferation. ADAMTS-6 is a member of the ADAMTS family; reports of its relationship with esophageal squamous cell carcinoma (ESCC) progression are rare. It is unclear whether ADAMTS-6 could be an independent ESCC biomarker.

Prognostic implications of epidermal growth factor receptor immunoreactivity in squamous cell carcinoma of the oral mucosa

To evaluate the clinical significance of the expression of epidermal growth factor receptor (EGFr) in oral squamous cell carcinoma (SCC), 100 formalin-fixed, paraffin-embedded cases of this tumour and ten samples of normal oral mucosa were immunostained with a monoclonal anti-EGFr antibody using an immunoalkaline phosphatase (APAAP) technique. EGFr immunoreactivity was detected in 36 of 100 tumours and in all samples of normal mucosa. Tumour cells demonstrated distinct membrane staining in 14 cases and predominantly cytoplasmic staining in 22 additional cases. EGFr was exclusively localized on the cell membrane of normal epithelial cells. Kaplan–Meyer survival curves and Cox proportional hazard regression models were used to assess overall survival and disease-free survival. A significant positive correlation was shown between EGFr membranous immunoreactivity and prolonged survival, in both univariate and multivariate analyses. Accordingly, patients with oral SCC showing down-regulated expression of membranous EGFr, who are more likely to suffer recurrence and death, should be strictly followed up and possibly treated with more aggressive therapeutic regimens. © 1998 John Wiley & Sons, Ltd.     

Mnk2和eIF4E在食管鳞状细胞癌中的表达及其临床意义

目的:探讨MAPK相互作用激酶-2(MAPK-interacting kinase-2,Mnk2)和真核细胞翻译起始因子4E(eukaryotic initiation factor 4E,eIF4E)在食管鳞状细胞癌中的表达及其与食管鳞状细胞癌临床病理特征的关系。方法:收集临床食管鳞癌石蜡标本98例及正常食管黏膜上皮组织20例,应用免疫组化SP法检测癌组织及正常食管黏膜组织中Mnk2和eIF4E的表达,并分析其与食管鳞癌临床病理特征的关系。结果:Mnk2在食管癌组织中的阳性率68.4%(67/98),eIF4E的阳性率为61.2%(60/98),Mnk2与eIF4E表达呈正相关(P0.05),且Mnk2蛋白过表达与食管鳞癌的浸润深度、病理分期密切相关(P0.05)。结论:Mnk2在食管癌组织中的过表达与浸润深度、TNM分期有关,同时与eIF4E在食管癌的表达相关,两者在食管癌的发展中有协同作用。