Upregulation of β2-microglobulin expression in progressive human oral             squamous cell carcinoma.
The aim of the present study was to investigate β2-microglobulin (β2-M) expression in normal oral mucosa and progressive oral squamous cell carcinoma (OSCC) and to assess the clinical significance of β2-microglobulin expression. The study included 10 cases of normal oral mucosa epithelium specimens, 55 cases of primary OSCC specimens, and 25 cases of OSCC metastasis specimens. Immunohistochemistry was used to determine β2-M expression, and its correlation with clinicopathological factors in progressive OSCC was evaluated. Immunohistochemistry showed that strong β2-M expression was significantly asscociated with tumor size (T3, T4 vs. T1, T2; P=0.001), positive node status (N positive vs. N negative; P=0.000) and advanced clinical stage (Ⅲ, Ⅳ vs. Ⅰ, Ⅱ, P=0.000) in primary OSCC lesions. Compared to primary OSCC lesions, the frequency of β2-M expression was significantly increased in metastatic OSCC lesions (P=0.02). In addition, in vitro results from Western blotting showed increased β2-M expression in the two OSCC lines studied. Therefore, we speculate that the up-regulation of β2-M expression may contribute to the oncogenesis of human oral mucosa, tumor invasion and metastasis.
Department of Oral and Maxillofacial Surgery, Ninth People's Hospital, Shanghai Research Institute of Stomatology, Shanghai Key Laboratory of Stomatology, Shanghai, PR China.
Qian
Q
Jiang
Sdek
S
Patima
Dong-Xia
DX
Ye
Hong-Ya
HY
Pan
Pin
P
Zhang
Zhi-Yuan
ZY
Zhang
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D014408:Biomarkers, Tumor / Q000032:analysis*; D015153:Blotting, Western; D002294:Carcinoma, Squamous Cell / Q000378:metabolism* / Q000556:secondary; D016022:Case-Control Studies; D045744:Cell Line, Tumor; D016009:Chi-Square Distribution; D002681:China; D018450:Disease Progression; D005260:Female; D006801:Humans; D007150:Immunohistochemistry; D008207:Lymphatic Metastasis; D008297:Male; D008875:Middle Aged; D009061:Mouth Mucosa / Q000378:metabolism* / Q000473:pathology; D009062:Mouth Neoplasms / Q000378:metabolism* / Q000473:pathology; D009361:Neoplasm Invasiveness; D009367:Neoplasm Staging; D018570:Risk Assessment; D012307:Risk Factors; D047368:Tumor Burden; D015854:Up-Regulation; D001613:beta 2-Microglobulin / Q000032:analysis*
D014408:Biomarkers, Tumor; D001613:beta 2-Microglobulin