Table 2.
Type | Protein | Normal Function | Role in ACC |
---|---|---|---|
Developmental proteins |
Sox4 | Proper development of the cardiac outflow tract, pro-B-lymphocyte differentiation, and CNS development23, 24 |
Cell survival, proliferation, and apoptosis25 Possibly plays role in metastasis27 |
c-kit | Binds stem cell factor and promotes cell growth and differentiation29 Hematopoiesis, spermatogenesis, and growth and migration of melanocytes30,31 |
Expression correlates with tumor grade32 Acts with Slug to control cell migration42 Associated with advanced stage, perineural invasion, local regional recurrence and metastases40 |
|
MYB | Various; cell cycle regulation | Fusion MYB-NFIB transcripts causes MYB overexpression9,10,11 |
|
Growth factors |
EGF/ EGFR |
Various; cell proliferation and survival | Cell survival, proliferation, oncogenesis, and metastasis48,49,50, EGFR expression correlates with tumor grade but not patient prognosis52 |
VEGF/ VEGFR |
Angiogenesis53,54 | Increases microvessel density56,57 Prognosticator of survival56,58 |
|
BDNF and NGF |
Neutrophins; promote survival, differentiation, and function of neurons44. |
Facilitating perineural invasion44,61 | |
Signaling molecules |
Wnt/ 6-catenin |
Activates genes important for growth and proliferation65,66 |
Reduced membranous expression of 6-cotentn associated with metastasis67 Expression of Galectin-3, a regulator of Wnt/β- catenin69, is associated with metastases and a more aggressive tumor phenotype69,72 |