Journal: Laboratory investigation; a journal of technical methods and pathology
Article Title: SOX2 contributes to melanoma cell invasion
doi: 10.1038/labinvest.2011.188
Figure Lengend Snippet: SOX2 and MMP-3 immunoreactivity in patient and xenograft melanomas. In patients (a–f), SOX2 (brown) and MMP-3 (blue) immunopositivity is located in small nests (c, d) or single cells (e, f) infiltrating stroma, in contrast to tumors with non-invasive perimeters (a, b). Adjacent cores from tissue microarray (TMA) (g, h) show strong SOX2/MMP-3 co-expression in small nests infiltrating stroma (g) and weaker immunostaining in expansile tumorigenic zones without stroma (h). Xenograft melanomas demonstrate preferential co-expression of SOX2 (brown by IHC, red by IF) and MMP-3 (blue by IHC, green by IF) along tumor edge (i, k; dotted), with a decrease toward tumor center (j, l; nuclei blue DAPI label). Xenografts from SOX2-KD cell line (m–p) were relatively devoid of SOX2 and MMP-3. (a–f, i–p) Bar = 50 μm, (g, h) bar = 500 μm.
Article Snippet: A human melanoma tissue microarray (TMA) containing 37 evaluable cores annotated according to primary vs metastatic melanoma origin and with survival outcomes was evaluated (Imgenex, San Diego, CA, USA).
Techniques: Microarray, Expressing, Immunostaining