Cell Movement/genetics; Epithelial-Mesenchymal Transition/genetics; Fetal Proteins/metabolism; Mouth Neoplasms/genetics; Mouth Neoplasms/pathology; Nuclear Proteins/metabolism; Up-Regulation/genetics; Aged; Cell Line, Tumor; Cell Shape; Endothelium/metabolism; Epithelial Cells/metabolism; Female; Fetal Proteins/genetics; Formins; Gene Expression Regulation, Neoplastic; Gene Knockdown Techniques; Gene Silencing; Humans; Mesoderm/pathology; Mouth Neoplasms/enzymology; Neoplasm Invasiveness; Neoplasms, Squamous Cell/enzymology; Neoplasms, Squamous Cell/genetics; Neoplasms, Squamous Cell/pathology; Nuclear Proteins/genetics; Phosphatidylinositol 3-Kinases/metabolism; Plasma Cells/metabolism; Proteolysis; RNA, Small Interfering/metabolism; Signal Transduction; Transcription, Genetic; Transcriptome/genetics