To elucidate the molecular mechanisms underlying the progression of head and neck squamous cell carcinoma (HNSCC), we investigated the function of let-7c as a tumor suppressor. Let-7c expression was significantly down-regulated in HNSCC tumor tissues and cell lines. In vitro and in vivo studies revealed that let-7c negatively regulated HNSCC proliferation, migration and epithelial-mesenchymal t...

BACKGROUND Germline mutations at the INK4a/p16 locus are implicated in several human cancer syndromes, including familial atypical multiple mole melanoma (FAMMM) syndrome, FAMMM-pancreatic cancer (FAMMM-PC) syndrome, and in familial head and neck cancer syndrome. METHODS We present an individual with a family history of melanoma and pancreatic cancer who had multiple dysplastic nevi, squamous...

Background and purposeTo assess the survival benefits associated with epidermal growth factor receptor (EGFR) inhibitors in head neck squamous cell carcinoma (HNSCC) according to primary site.Materials methodsA systematic review meta-analysis were conducted for randomized phase III trials comparing treatment or without EGFR locoregionally advanced, recurrent, metastatic HNSCC. The secondary end...

BACKGROUND/AIM The aberrant upregulation of Forkhead box protein M1 (FOXM1) plays a fundamental role in cancer initiation by perturbing stem cell differentiation. This study aims to investigate the role of FOXMI in epigenetic modification and gene expression of target genes in primary human oral keratinocytes, squamous cell carcinoma cell lines, and head and neck squamous cell carcinoma (HNSCC)...

Members of the Bcl-2 family play a major role in the pathobiology of head and neck cancer. We have shown that Bcl-2 orchestrates a cross talk between tumor cells and endothelial cells that have a direct effect on the progression of head and neck squamous cell carcinoma (HNSCC). Notably, Bcl-2 is significantly up-regulated in the tumor-associated endothelial cells compared with the endothelial c...

The epidermal growth factor receptor (EGFR) is a validated target in squamous cell carcinoma of the head and neck (HNSCC). However, despite high expression of EGFR in these cancers, EGFR inhibitor monotherapy has only had modest activity. Potential mechanisms of resistance to EGFR-targeted therapies involve EGFR and Ras mutations, epithelial-mesenchymal transition, and activation of alternative...

Using viable cells of a human head and neck squamous cell carcinoma (HNSCC) cell line as immunogen, we developed monoclonal antibody (MAb) U36. Immunohistochemical examination revealed distinct surface labeling of MAb U36 with normal human squamous epithelium and squamous cell carcinomas of distinct sites of origin; head and neck, lung, esophagus, cervix, and epidermis. MAb U36 shows high affin...

Head and neck squamous cell carcinoma (HNSCC) is one of the most frequently diagnosed cancers. It is believed that tumor production of various immune suppressive mediators contributes to massively impaired immune functions, but the underlying signal transduction pathways are mostly unknown. Phosphorylation levels of MAP (mitogen-activated protein) kinase p38 were analyzed in permanent cell line...

This review aims to summarize the technique and clinical applications of CT perfusion (CTp) of head and neck cancer. The most common pathologic type (90%) of head and neck cancer is squamous cell carcinoma (HNSCC): its diagnostic workup relies on CT and MRI, as they provide an accurate staging for the disease by determining tumour volume, assessing its extension, and detecting of lymph node met...

The head and neck region encompasses structures from the base of the skull to the clavicles which include nasopharynx, oropharynx, hypopharynx, larynx and oral cavity. Tobacco, alcohol, and human papilloma virus (HPV) infection are the three major risk factors for head and neck squamous cell carcinoma (HNSCC) in different countries. The multidisciplinary management of head and neck tumors is no...