目的探讨富亮氨酸衔接蛋白1(leucine repeat adaptor protein 1,Lurap1)在非小细胞肺癌(NSCLC)中的表达意义,及其对细胞增殖和侵袭的影响。方法应用免疫组化分析Lurap1蛋白在肺癌组织中的表达及与临床病理因素之间的关系。通过MTT、集...
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目的探讨富亮氨酸衔接蛋白1(leucine repeat adaptor protein 1,Lurap1)在非小细胞肺癌(NSCLC)中的表达意义,及其对细胞增殖和侵袭的影响。方法应用免疫组化分析Lurap1蛋白在肺癌组织中的表达及与临床病理因素之间的关系。通过MTT、集落形成和Transwell等实验观察双向调控Lurap1的表达对肺癌细胞增殖和侵袭能力的影响。结果Lurap1在肿瘤组织中阳性表达率为51.49%(52/101),明显低于肿瘤组织旁的正常肺组织(85.25%,52/61)。Lurap1的表达与肺癌的分化程度呈正相关,与TNM分期和淋巴结转移呈负相关(P=0.021;P=0.006)。转染Lurap1抑制肺癌细胞的增殖和侵袭,而干扰Lurap1表达可促进细胞增殖与侵袭(P<0.05)。结论Lurap1对非小细胞肺癌有潜在的治疗作用。
OBJECTIVE: To investigate telomerase gene expression in precancerous mammary lesion, such as atypical ductal hyperplasia and breast cancer and to study the relationship between expression and malignant transformation....
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OBJECTIVE: To investigate telomerase gene expression in precancerous mammary lesion, such as atypical ductal hyperplasia and breast cancer and to study the relationship between expression and malignant transformation. METHODS: Expression of human telomerase genes (hTR) and human reverse transcriptase gene (hTRT) in 76 cases of mammary tissue was evaluated using in situ hybridization and included 50 cases of mammary hyperplasia, 6 of which were benign hyperplasia, 9 were mild atypical hyperplasia, 12 were moderate atypical hyperplasia, 23 were severe atypical hyperplasia and 26 were mammary cancer. RESULTS: The expressions of hTR and hTRT mRNA were much weaker or negative in benign hyperplasia (16.6%, 0), weak to mild moderate in atypical hyperplasia (22.2%, 11.1%, 33.3%, 25.0%), strong in severe atypical hyperplasia (60.9%, 52.1%), and significantly strong in mammary cancer (88.5%, 80.8%).The difference between mild-moderate atypical hyperplasia, invasive ductal carcinoma and severe atypical hyperplasia was significant (P 0.05). CONCLUSION: Telomerase genes (hTR and hTRT) expressions are related to the transformation of atypical hyperplasia. Activated telomerase may play a role in mammary cancer development.
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