Abstract:
:The development of reliable gene expression profiling technology is having an increasing impact on our understanding of lung cancer biology. Our study aimed to determine any correlation between the phenotypic heterogeneity and genetic diversity of lung cancer. Microarray analysis was performed on a set of 46 tumor samples and 45 paired nontumor samples of nonsmall cell lung cancer (NSCLC) samples to establish gene signatures in primary adenocarcinomas and squamous-cell carcinomas, determine differentially expressed gene sequences at different stages of the disease and identify sequences with biological significance for tumor progression. After the microarray analysis, the expression level of 92 selected genes was validated by qPCR and the robust Bonferroni test in an independent set of 70 samples composed of 48 tumor samples and 22 nontumor samples. Gene sequences were differentially expressed as a function of tumor type, stage and differentiation grade. High upregulation was observed for KRT15 and PKP1, which may be good markers to distinguish squamous-cell carcinoma samples. High downregulation was observed for DSG3 in stage IA adenocarcinomas.
journal_name
Int J Cancerjournal_title
International journal of cancerauthors
Sanchez-Palencia A,Gomez-Morales M,Gomez-Capilla JA,Pedraza V,Boyero L,Rosell R,Fárez-Vidal MEdoi
10.1002/ijc.25704subject
Has Abstractpub_date
2011-07-15 00:00:00pages
355-64issue
2eissn
0020-7136issn
1097-0215journal_volume
129pub_type
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