OBJECTIVE To examine the expression of vascular endothelial growth factor C （VEGF-C） in human esophageal squamous cell carcinoma （ESCC）, and to clarify its role in lymphatic metastasis in ESCC patients.METHODS Eso...OBJECTIVE To examine the expression of vascular endothelial growth factor C （VEGF-C） in human esophageal squamous cell carcinoma （ESCC）, and to clarify its role in lymphatic metastasis in ESCC patients.METHODS Esophageal carcinoma EC9706 cells and samples from 49 patients with primary ESCC were investigated by using S-P immunohistochemistry （IHC）, the semi-quantitative reverse transcriptase-polymerase chain reaction （RT-PCR） and in situ hybridization （ISH） methods for VEGF-C expression. RESULTS VEGF-C positive expression was found in EC9706 cells through IHC, ISH and RT-PCR. Positive IHC for VEGF-C was observed in 36 of 49 cases of ESCC. There was a significant difference between the expression of VEGF-C in a lymph-node-positive group compared to a node-negative group （χ^2=4.7, P〈0.05）. Positive ISH for VEGF-C mRNA was observed in 23 of 49 cases of ESCC. There was a significant difference between the expression of VEGF-C in the lymph-node-positive group and node-negative group （χ^2=31.3, P〈0.01）. The expression of VEGF-C was significantly higher in the lymph-node-positive group compared to the node-negative group. Of 49 ESCC tissues, RT-PCR for VEGF-C mRNA was observed positively in 29 cases. There was a significant difference between the expression of VEGF-C in the lymph-node-positive group and node-negative group （χ^2=23.3, P〈0.01）. The expression of VEGF-C was significantly higher in the lymphnode-positive group compared to the node-negative group. Expressions of VEGF-C were not significantly associated with age, gender, and pathological grade. There was a relationship between VEGF-C mRNA expressions by RT-PCR and ISH （χ^2=18.5, P〈0.01） in ESCC cases, but with no significant difference between the two methods. CONCLUSION VEGF-C expression may induce lymphangiogenesis in human ESCC. There was a close correlation between VEGF-C expression and lymph node metastasis. VEGF-C can serve as a useful prognostic factor for ESCC patients.展开更多
背景与目的:原发性胆囊癌(primary carcinoma of the gallbladder,PCG)是死亡率极高的恶性肿瘤,其恶变的机制目前尚未明确。前期研究发现,p57^(KIP2)在人类多种恶性肿瘤中异常表达。本研究拟进一步探讨p57^(KIP2)在PCG组织中的表达及临...背景与目的:原发性胆囊癌(primary carcinoma of the gallbladder,PCG)是死亡率极高的恶性肿瘤,其恶变的机制目前尚未明确。前期研究发现,p57^(KIP2)在人类多种恶性肿瘤中异常表达。本研究拟进一步探讨p57^(KIP2)在PCG组织中的表达及临床意义。方法:运用实时荧光定量聚合酶链反应(real-time fluorescence quantitative polymerase chain reaction,RTFQ-PCR)、免疫组织化学EliVision法分别检测60例PCG、20例胆囊腺瘤(adenoma of the gallbladder,AG)和20例慢性胆囊炎(chronic cholecystitis,CC)组织中p57^(KIP2)、cyclin D1、cyclin E mRNA表达及蛋白水平。结果:p57^(KIP2) mRNA及蛋白在PCG、AG和CC中的表达逐渐升高,两两比较差异有统计学意义(P<0.05)。Cyclin D1、cyclin E mRNA及蛋白在PCG、AG和CC中的表达逐渐降低,PCG与AG比较、PCG与CC比较,差异有统计学意义(P<0.05)。在PCG组织中,p57^(KIP2)蛋白的表达与临床分期、组织学分级及淋巴结转移有关(P<0.05)。Cyclin D1蛋白的表达与临床分期有关(P<0.05)。p57^(KIP2)与cyclin D1的表达呈负相关(P<0.05),p57^(KIP2)与cyclin E的表达呈负相关(P<0.05),cyclin D1与cyclin E的表达呈正相关(P<0.05)。结论:p57^(KIP2)表达的降低与cyclin D1、cyclin E表达的增加可能是PCG的发生机制之一;检测p57^(KIP2)、cyclin D1及cyclin E对PCG的预后判断有重要意义。展开更多
基金This work was supported by a grant from theNational Natural Science Foundation of China(No.30470779)the Henan InnovationProject for University Prominent ResearchTalents(No.2006KYCX016)
文摘OBJECTIVE To examine the expression of vascular endothelial growth factor C （VEGF-C） in human esophageal squamous cell carcinoma （ESCC）, and to clarify its role in lymphatic metastasis in ESCC patients.METHODS Esophageal carcinoma EC9706 cells and samples from 49 patients with primary ESCC were investigated by using S-P immunohistochemistry （IHC）, the semi-quantitative reverse transcriptase-polymerase chain reaction （RT-PCR） and in situ hybridization （ISH） methods for VEGF-C expression. RESULTS VEGF-C positive expression was found in EC9706 cells through IHC, ISH and RT-PCR. Positive IHC for VEGF-C was observed in 36 of 49 cases of ESCC. There was a significant difference between the expression of VEGF-C in a lymph-node-positive group compared to a node-negative group （χ^2=4.7, P〈0.05）. Positive ISH for VEGF-C mRNA was observed in 23 of 49 cases of ESCC. There was a significant difference between the expression of VEGF-C in the lymph-node-positive group and node-negative group （χ^2=31.3, P〈0.01）. The expression of VEGF-C was significantly higher in the lymph-node-positive group compared to the node-negative group. Of 49 ESCC tissues, RT-PCR for VEGF-C mRNA was observed positively in 29 cases. There was a significant difference between the expression of VEGF-C in the lymph-node-positive group and node-negative group （χ^2=23.3, P〈0.01）. The expression of VEGF-C was significantly higher in the lymphnode-positive group compared to the node-negative group. Expressions of VEGF-C were not significantly associated with age, gender, and pathological grade. There was a relationship between VEGF-C mRNA expressions by RT-PCR and ISH （χ^2=18.5, P〈0.01） in ESCC cases, but with no significant difference between the two methods. CONCLUSION VEGF-C expression may induce lymphangiogenesis in human ESCC. There was a close correlation between VEGF-C expression and lymph node metastasis. VEGF-C can serve as a useful prognostic factor for ESCC patients.
文摘背景与目的:原发性胆囊癌(primary carcinoma of the gallbladder,PCG)是死亡率极高的恶性肿瘤,其恶变的机制目前尚未明确。前期研究发现,p57^(KIP2)在人类多种恶性肿瘤中异常表达。本研究拟进一步探讨p57^(KIP2)在PCG组织中的表达及临床意义。方法:运用实时荧光定量聚合酶链反应(real-time fluorescence quantitative polymerase chain reaction,RTFQ-PCR)、免疫组织化学EliVision法分别检测60例PCG、20例胆囊腺瘤(adenoma of the gallbladder,AG)和20例慢性胆囊炎(chronic cholecystitis,CC)组织中p57^(KIP2)、cyclin D1、cyclin E mRNA表达及蛋白水平。结果:p57^(KIP2) mRNA及蛋白在PCG、AG和CC中的表达逐渐升高,两两比较差异有统计学意义(P<0.05)。Cyclin D1、cyclin E mRNA及蛋白在PCG、AG和CC中的表达逐渐降低,PCG与AG比较、PCG与CC比较,差异有统计学意义(P<0.05)。在PCG组织中,p57^(KIP2)蛋白的表达与临床分期、组织学分级及淋巴结转移有关(P<0.05)。Cyclin D1蛋白的表达与临床分期有关(P<0.05)。p57^(KIP2)与cyclin D1的表达呈负相关(P<0.05),p57^(KIP2)与cyclin E的表达呈负相关(P<0.05),cyclin D1与cyclin E的表达呈正相关(P<0.05)。结论:p57^(KIP2)表达的降低与cyclin D1、cyclin E表达的增加可能是PCG的发生机制之一;检测p57^(KIP2)、cyclin D1及cyclin E对PCG的预后判断有重要意义。
