Abstract：
PURPOSE:To investigate the overexpression of genes in sebaceous gland carcinoma (SGC) of the eyelid compared to sebaceous adenoma of the eyelid in order to elucidate the molecular mechanism underlying pathogenesis. METHODS:We performed histopathological examination of eyelid tissues surgically removed from four patients diagnosed with SGC (cases 1-3) and sebaceous adenoma (case 4) of the eyelid. Next, we performed global gene expression analysis of surgical tissue samples using a GeneChip® system and the Ingenuity Pathways Knowledge Base. The results of the GeneChip® analysis were explored with quantitative real-time polymerase chain reaction (qRT-PCR) analysis. RESULTS:In the SGC samples, we found that 211, 199, and 199 genes, respectively, showed ≥ 2.0-fold higher expression than those in the sebaceous adenoma sample (case 4); 194 genes were common to all three SGC samples. For the 194 genes with upregulated expression, functional category analysis showed that SGC of the eyelid employed a unique gene network, including cyclin-dependent kinase inhibitor 2A (CDKN2A), cyclin-dependent kinase 1 (CDK1), and cyclin E1 (CCNE1), which are related to cell cycle progression, incidence of tumor, and cell viability. Furthermore, qRT-PCR analysis showed that the expression levels of CDKN2A, CDK1, and CCNE1 were significantly upregulated in all SGC cases compared to those in the sebaceous adenoma case. These data were similar to the results of microarray analysis. CONCLUSION:Overexpression of cell cycle-related genes CDKN2A, CDK1, CCNE1, and their gene network may help elucidate the pathogenic pathway of SGC of the eyelid at the molecular level.
journal_name
Int Ophthalmoljournal_title
International ophthalmologyauthors
Yunoki T,Hirano T,Tabuchi Y,Furusawa Y,Torigoe M,Nakajima T,Imura J,Hayashi Adoi
10.1007/s10792-019-01185-7subject
Has Abstractpub_date
2020-02-01 00:00:00pages
343-350issue
2eissn
0165-5701issn
1573-2630pii
10.1007/s10792-019-01185-7journal_volume
40pub_type
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