Abstract:
:More than 90% of oral cancers are histopathologically squamous cell carcinomas (SCCs). According to clinical behavior and histopathological features, we hypothesize that oral SCC can originate from either oral squamous epithelium or minor salivary glands. Here, we examined whether some oral SCCs originate from minor salivary glands, and investigated whether these tumors show particularly aggressive biological behavior. The mRNA expression profiles of samples obtained from six patients with oral floor SCC (five men, one woman; mean age, 62.7 years) were analyzed using a microarray containing 32,878 probes. The six samples were divided into two groups by clustering of expression levels of 845 probes differentially expressed in normal oral squamous epithelium and normal salivary glands. The expression profile in four cases was similar to that of normal oral squamous epithelium, and in two cases was similar to that of normal salivary glands. Furthermore, we identified nine genes that reveal the origin of the oral SCC. Subsequently, we examined the expression levels of these nine marker genes by reverse transcriptase-polymerase chain reaction to determine the origin of 66 oral SCCs. Twelve of the 66 oral SCCs were considered to originate from minor salivary glands, and these tumors showed high metastatic potential (p = 0.044, Chi-square test). Furthermore, SCC derived from minor salivary glands showed a poor event-free survival rate (p = 0.017, Kaplan-Meier analysis). In conclusion, determination of the origin of oral SCC is helpful in planning treatment for patients with oral SCC.
journal_name
Int J Cancerjournal_title
International journal of cancerauthors
Kinouchi M,Izumi S,Nakashiro KI,Haruyama Y,Kobashi G,Uchida D,Hasegawa T,Kawamata Hdoi
10.1002/ijc.31811subject
Has Abstractpub_date
2018-11-15 00:00:00pages
2551-2560issue
10eissn
0020-7136issn
1097-0215journal_volume
143pub_type
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