Screening of Biomarker for Oral Squamous Cell Carcinoma Correlating with Clinicopathological Findings Using by Laser Microdissection and cDNA Microarray

Oroxylin A (Oro-A), the main bioactive flavonoid extracted from Scutellaria radix, has been reported to inhibit migration in various human cancer cell models. In this study, we further explored the anti-migration effects of Oro-A on oral squamous cell carcinoma (OSCC) cells and investigated the underlying mechanisms. A 24-h (short-term) exposure of OSCC cells to non-cytotoxic concentrations (5–20 μM) of Oro-A significantly suppressed cell migration according to a wound-healing assay. Furthermore, a 30-day exposure (long-term) to Oro-A (20 μM), which did not exhibit a cytotoxic effect on OSCC cells, significantly suppressed cell migration more than short-term Oro-A exposure. To uncover the molecular mechanisms underlying the inhibitory effect of long-term Oro-A exposure on OSCC migration, a cDNA microarray and the Ingenuity software were used. Overall, 112 upregulated and 356 downregulated genes were identified in long-term Oro-A-exposed cells compared with untreated OSCC cells. Among them, 75 genes were reported to be associated with cancer cell migration. Consistent with the cDNA microarray results, we found that the expression levels of several cell migration-related genes, such as LCN2, ID-1, MDK, S100A9 and CCL2, were significantly decreased in long-term Oro-A-exposed OSCC cells using a quantitative real-time polymerase chain reaction (Q-PCR) assay. The Western blotting and enzyme-linked immunosorbent assay (ELISA) results also demonstrated that CCL2 expression at the mRNA and protein levels was significantly decreased in long-term Oro-A-exposed OSCC cells compared with untreated OSCC cells. Moreover, the expression levels of downstream CCL2 targets, including p-ERK1/2, NFκB, MMP2, and MMP9, were also decreased in long-term Oro-A-exposed OSCC cells. Further, Oro-A treatment suppressed in vivo metastasis. These results suggest that long-term Oro-A treatment inhibits metastasis via CCL2 signaling in OSCC cells.

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From molecular diagnostics to molecular targeted therapy with natural product small molecule inhibitors in oral squamous cell carcinoma

Planta Medica ◽

10.1055/s-2007-986722 ◽

2007 ◽

Vol 73 (09) ◽

Cited By ~ 1

Author(s):

VB Konkimalla ◽

VL Suhas ◽

NR Chandra ◽

E Gebhart ◽

T Efferth

Keyword(s):

Squamous Cell Carcinoma ◽

Targeted Therapy ◽

Oral Squamous Cell Carcinoma ◽

Cell Carcinoma ◽

Natural Product ◽

Molecular Diagnostics ◽

Small Molecule ◽

Squamous Cell ◽

Molecular Targeted Therapy ◽

Small Molecule Inhibitors

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Role of Clinical Palpation in Evaluation of Cervical Lymph Node in Oral Squamous Cell Carcinoma

Update Dental College Journal ◽

10.3329/updcj.v1i2.13978 ◽

2013 ◽

Vol 1 (2) ◽

pp. 02-06

Author(s):

SM Anwar Sadat ◽

Sufia Nasrin Rita ◽

Shoma Banik ◽

Md Nazmul Hasan Khandker ◽

Md Mahfuz Hossain ◽

...

Keyword(s):

Squamous Cell Carcinoma ◽

Lymph Node ◽

Oral Squamous Cell Carcinoma ◽

Lymph Nodes ◽

Cell Carcinoma ◽

Squamous Cell ◽

Predictive Value ◽

Cervical Lymph Node ◽

Betel Quid ◽

Cervical Lymph Nodes

A cross sectional study of 29 cases of oral squamous cell carcinoma with or without cervical lymph node metastasis was done among Bangladeshi patients from January 2006 to December 2007. Majority of the study subjects (34.5%) belonged to the age group of 40-49 years. 58.6% of the study subjects were male, while remaining 41.4% of them were female. 51.7% of the lesions were located in the alveolar ridge where the other common sites were buccal mucosa (27.6%) and retro molar area (13.8%). Half of the study subjects (51.7%) were habituated to betel quid chewing followed by 37.9% and 10.3% were habituated to smoking and betel quid-smoking respectively. Grade I lesions was most prevalent (75.9%) in the study subjects. Majority of cases presented with Stage IV lesions (55.2%). The sensitivity, specificity, positive predictive value, negative predictive value & accuracy of clinical palpation method for determining metastatic cervical lymph nodes were 93.33%, 64.29%, 73.68%, 90% and 79.3% respectively. Careful and repeated clinical palpation plays important role in evaluation of cervical lymph nodes though several modern techniques may help additionally in the management of oral cancer.DOI: http://dx.doi.org/10.3329/updcj.v1i2.13978 Update Dent. Coll. j. 2011: 1(2): 02-06

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