Molecular profiling of tumor progression in head and neck cancer.
OBJECTIVE
To assess gene expression changes associated with tumor progression in patients with squamous cell carcinoma of the oral cavity.


METHODS
A microarray containing 17 840 complementary DNA clones was used to measure gene expression changes associated with tumor progression in 9 patients with squamous cell carcinoma of the oral cavity. Samples were taken for analysis from the primary tumor, nodal metastasis, and "normal" mucosa from the patients' oral cavity.


METHODS
Tertiary care facility. Patients Nine patients with stage III or stage IV untreated oral cavity squamous cell carcinoma.


RESULTS
Our analysis to categorize genes based on their expression patterns has identified 140 genes that consistently increased in expression during progression from normal tissue to invasive tumor and subsequently to metastatic node (in at least 4 of the 9 cases studied). A similar list of 94 genes has been identified that decreased in expression during tumor progression and metastasis. We validated this gene discovery approach by selecting moesin (a member of the ezrin/radixin/moesin [ERM] family of cytoskeletal proteins) and one of the genes that consistently increased in expression during tumor progression for subsequent immunohistochemical analysis using a head and neck squamous cell carcinoma tissue array.


CONCLUSIONS
A distinct pattern of gene expression, with progressive up- or down-regulation of expression, is found during the progression from histologically normal tissue to primary carcinoma and to nodal metastasis.
Belbin
Thomas J
TJ
Department of Pathology, Albert Einstein College of Medicine/Montefiore Medical Center, Bronx, NY 10461, USA. tbelbin@aecom.yu.edu
Singh
Bhuvanesh
B
Smith
Richard V
RV
Socci
Nicholas D
ND
Wreesmann
Volkert B
VB
Sanchez-Carbayo
Marta
M
Masterson
Jessica
J
Patel
Snehal
S
Cordon-Cardo
Carlos
C
Prystowsky
Michael B
MB
Childs
Geoffrey
G
D002294:Carcinoma, Squamous Cell / Q000235:genetics* / Q000473:pathology; D018450:Disease Progression; D020869:Gene Expression Profiling / Q000379:methods*; D006258:Head and Neck Neoplasms / Q000235:genetics* / Q000473:pathology; D006801:Humans; D008840:Microfilament Proteins / Q000235:genetics; D009055:Mouth; D009367:Neoplasm Staging; D020411:Oligonucleotide Array Sequence Analysis
D008840:Microfilament Proteins; C071058:moesin