STAG2 expression in oral cancer and potentially malignant lesions. 2014

Vanessa Fátima Bernardes, and Gefter Thiago Batista Correa, and Adriano Mota Loyola, and Sérgio Vitorino Cardoso, and Alfredo Maurício Batista de Paula, and Mônica Maria Demas Álvares Cabral, and Ricardo Santiago Gomez, and Carolina Cavaliéri Gomes
Department of Pathology, Institute of Biological Sciences, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, Belo Horizonte, 31270-901, MG, Brazil.

Oral cancer is a world health problem, and one of the highest incidence rates of oral cancer worldwide occurs in Brazil. STAG2 is part of the cohesin complex which is responsible for sister chromatid cohesion. STAG2 loss of expression was reported in a range of tumors, and STAG2 loss was found to cause chromosomal instability and aneuploidy in cancer cells. On the basis of these findings, we investigated STAG2 expression in oral cancer and potentially malignant lesions. We investigated STAG2 immunoexpression in oral cancer, lip cancer, oral leukoplakia, and actinic cheilitis, including complete clinical information. Normal oral mucosa samples were included as normal controls. STAG2 protein was highly expressed in all samples. We further tested STAG2 expression in gastric adenocarcinomas and glioblastomas, as these tumor types were previously shown to lose STAG2 expression. We found homogenous expression of STAG2 by these tumor cells. Our results suggest that STAG2 loss of expression is not a common event in oral carcinogenesis.

UI MeSH Term Description Entries
D007150 Immunohistochemistry Histochemical localization of immunoreactive substances using labeled antibodies as reagents. Immunocytochemistry,Immunogold Techniques,Immunogold-Silver Techniques,Immunohistocytochemistry,Immunolabeling Techniques,Immunogold Technics,Immunogold-Silver Technics,Immunolabeling Technics,Immunogold Silver Technics,Immunogold Silver Techniques,Immunogold Technic,Immunogold Technique,Immunogold-Silver Technic,Immunogold-Silver Technique,Immunolabeling Technic,Immunolabeling Technique,Technic, Immunogold,Technic, Immunogold-Silver,Technic, Immunolabeling,Technics, Immunogold,Technics, Immunogold-Silver,Technics, Immunolabeling,Technique, Immunogold,Technique, Immunogold-Silver,Technique, Immunolabeling,Techniques, Immunogold,Techniques, Immunogold-Silver,Techniques, Immunolabeling
D007972 Leukoplakia, Oral A white patch seen on the oral mucosa. It is considered a premalignant condition and is often tobacco-induced. When evidence of Epstein-Barr virus is present, the condition is called hairy leukoplakia (LEUKOPLAKIA, HAIRY). Keratosis, Oral,Leukokeratosis, Oral,Keratoses, Oral,Leukokeratoses, Oral,Leukoplakias, Oral,Oral Keratoses,Oral Keratosis,Oral Leukokeratoses,Oral Leukokeratosis,Oral Leukoplakia,Oral Leukoplakias
D008048 Lip Neoplasms Tumors or cancer of the LIP. Cancer of Lip,Lip Cancer,Cancer of the Lip,Neoplasms, Lip,Cancer, Lip,Cancers, Lip,Lip Cancers,Lip Neoplasm,Neoplasm, Lip
D008297 Male Males
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D009062 Mouth Neoplasms Tumors or cancer of the MOUTH. Cancer of Mouth,Mouth Cancer,Oral Cancer,Oral Neoplasms,Cancer of the Mouth,Neoplasms, Mouth,Neoplasms, Oral,Cancer, Mouth,Cancer, Oral,Cancers, Mouth,Cancers, Oral,Mouth Cancers,Mouth Neoplasm,Neoplasm, Mouth,Neoplasm, Oral,Oral Cancers,Oral Neoplasm
D002613 Cheilitis Inflammation of the lips. It is of various etiologies and degrees of pathology. Cheilitides
D005260 Female Females
D005909 Glioblastoma A malignant form of astrocytoma histologically characterized by pleomorphism of cells, nuclear atypia, microhemorrhage, and necrosis. They may arise in any region of the central nervous system, with a predilection for the cerebral hemispheres, basal ganglia, and commissural pathways. Clinical presentation most frequently occurs in the fifth or sixth decade of life with focal neurologic signs or seizures. Astrocytoma, Grade IV,Giant Cell Glioblastoma,Glioblastoma Multiforme,Astrocytomas, Grade IV,Giant Cell Glioblastomas,Glioblastoma, Giant Cell,Glioblastomas,Glioblastomas, Giant Cell,Grade IV Astrocytoma,Grade IV Astrocytomas
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man

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