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Figure 4 | Journal of Translational Medicine

Figure 4

From: Association of cancer metabolism-related proteins with oral carcinogenesis – indications for chemoprevention and metabolic sensitizing of oral squamous cell carcinoma?

Figure 4

Immunohistochemical analysis and staining of TKTL1 in normal oral mucosal tissue, oral precursor lesions - hyperplasia, SIN I, SIN II, SIN III, and invasive OSCC. In comparison to normal tissue/hyperplasia a significantly (p < 0.05, Kruskal-Wallis Test; A and B) increased expression of TKTL1 is observed in OSCC. TKTL1 expression is significantly increased in OSCC compared with SIN I-III (p < 0.0001, Mann–Whitney U Test). Analysis refers to averaged scores. Red line indicates TKTL1 expression results during carcinogenesis. Grey lines show 95% confidence intervals. Analysis of significant statistically different single values is indicated in the table below (B). SIN III is subdivided in severe dysplasia (sev. dysplasia) and carcinoma in situ (CIS). TKTL1, transketolase-like-1; SIN, squamous intraepithelial neoplasia; N.T., normal tissue. Immunohistochemical staining shows representative images of TKTL1 expression in N.T. (C), SIN (D), and OSCC (E). Brown chromogen color (3,3′-Diaminobenzidine) indicates positive staining, the blue color shows the nuclear counterstaining by hematoxylin. The square box demonstrates the area of interest (original magnification: x100-fold, left panel) which is also shown in larger magnification (x200-fold, right panel).

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