探讨LUNX m RNA作为肺癌微转移检测分子标志物的可行性。临床纳入20例确诊为可以进行手术治疗的中早期非小细胞肺癌(Non-small cell lung carcinoma,NSCLC)患者,分别于术前、术后即刻以及术后1 w采集患者的外周血液,使用逆转录聚合酶链...探讨LUNX m RNA作为肺癌微转移检测分子标志物的可行性。临床纳入20例确诊为可以进行手术治疗的中早期非小细胞肺癌(Non-small cell lung carcinoma,NSCLC)患者,分别于术前、术后即刻以及术后1 w采集患者的外周血液,使用逆转录聚合酶链反应(RT-PCR)法检测肺癌特异性基因LUNX的表达。此外,研究纳入10例肺部良性疾病患者,亦进行肺癌特异性基因LUNX表达的RT-PCR检测。20例中早期非小细胞肺癌患者中,有9例患者的外周血中检测到LUNX m RNA的表达;10例肺部良性疾病患者的外周血中,均未检测到LUNX m RNA的表达。采用RT-PCR法进行外周血LUNX m RNA表达的检测,是目前较为理想的诊断中早期非小细胞肺癌患者是否发生微转移的方法。手术治疗中早期非小细胞肺癌患者,能够减低患者术后远处转移的发生。手术操作可能促进肿瘤细胞向外周血的脱落。展开更多
Background Tetralogy of Fallot （TOF） is the most common malformation of children with an incidence of approximately 10% of congenital heart disease patients. There can be a wide spectrum to the severity of the anato...Background Tetralogy of Fallot （TOF） is the most common malformation of children with an incidence of approximately 10% of congenital heart disease patients. There can be a wide spectrum to the severity of the anatomic defects, which include ventricular septal defect, aortic override, right ventricular outflow tract obstruction, and right ventricular hypertrophy. We examined the relationship between right ventricular hypertrophy in patients with TOF and the gene expression of factors in the mitogen-activated protein kinase （MAPK） signal pathway. Methods To gain insight into the characteristic gene（s） involved in molecular mechanisms of right ventricular hypertrophy in TOF, differential mRNA and micro RNA expression profiles were assessed using expression-based micro array technology on right ventricular biopsies from young TOF patients who underwent primary correction and on normal heart tissue. We then analyzed the gene expression of the MAPK signal pathway using reverse transcription-polymerase chain reaction （RT-PCR） in normals and TOF patients. Results Using the micro RNA chip V3.0 and human whole genome oligonucleotide microarray VI.0 to detect the gene expression, we found 1068 genes showing altered expression of at least two-fold in TOF patients compared to the normal hearts, and 47 micro RNAs that showed a significant difference of at least two-fold in TOF patients. We then analyzed these mRNAs and micro RNAs by target gene predicting software Microcosm Targets version 5.0, and determined those mRNA highly relevant to the right ventricular hypertrophy by RT-PCR method. There were obvious differences in the gene expression of factors in the MAPK signal pathway when using RT-PCR, which was consistent to the results of the cDNA microarray.Conclusion The upregulation of genes in the MAPK signal pathway may be the key events that contribute to right ventricular hypertrophy and stunted angiogenesis in patients with TOF.展开更多
文摘探讨LUNX m RNA作为肺癌微转移检测分子标志物的可行性。临床纳入20例确诊为可以进行手术治疗的中早期非小细胞肺癌(Non-small cell lung carcinoma,NSCLC)患者,分别于术前、术后即刻以及术后1 w采集患者的外周血液,使用逆转录聚合酶链反应(RT-PCR)法检测肺癌特异性基因LUNX的表达。此外,研究纳入10例肺部良性疾病患者,亦进行肺癌特异性基因LUNX表达的RT-PCR检测。20例中早期非小细胞肺癌患者中,有9例患者的外周血中检测到LUNX m RNA的表达;10例肺部良性疾病患者的外周血中,均未检测到LUNX m RNA的表达。采用RT-PCR法进行外周血LUNX m RNA表达的检测,是目前较为理想的诊断中早期非小细胞肺癌患者是否发生微转移的方法。手术治疗中早期非小细胞肺癌患者,能够减低患者术后远处转移的发生。手术操作可能促进肿瘤细胞向外周血的脱落。
文摘Background Tetralogy of Fallot （TOF） is the most common malformation of children with an incidence of approximately 10% of congenital heart disease patients. There can be a wide spectrum to the severity of the anatomic defects, which include ventricular septal defect, aortic override, right ventricular outflow tract obstruction, and right ventricular hypertrophy. We examined the relationship between right ventricular hypertrophy in patients with TOF and the gene expression of factors in the mitogen-activated protein kinase （MAPK） signal pathway. Methods To gain insight into the characteristic gene（s） involved in molecular mechanisms of right ventricular hypertrophy in TOF, differential mRNA and micro RNA expression profiles were assessed using expression-based micro array technology on right ventricular biopsies from young TOF patients who underwent primary correction and on normal heart tissue. We then analyzed the gene expression of the MAPK signal pathway using reverse transcription-polymerase chain reaction （RT-PCR） in normals and TOF patients. Results Using the micro RNA chip V3.0 and human whole genome oligonucleotide microarray VI.0 to detect the gene expression, we found 1068 genes showing altered expression of at least two-fold in TOF patients compared to the normal hearts, and 47 micro RNAs that showed a significant difference of at least two-fold in TOF patients. We then analyzed these mRNAs and micro RNAs by target gene predicting software Microcosm Targets version 5.0, and determined those mRNA highly relevant to the right ventricular hypertrophy by RT-PCR method. There were obvious differences in the gene expression of factors in the MAPK signal pathway when using RT-PCR, which was consistent to the results of the cDNA microarray.Conclusion The upregulation of genes in the MAPK signal pathway may be the key events that contribute to right ventricular hypertrophy and stunted angiogenesis in patients with TOF.
