Review Article

From Normal Skin to Squamous Cell Carcinoma: A Quest for Novel Biomarkers

Table 2

Molecular pathways governing epidermal stem cells homeostasis and tumorigenesis.

Nr crtMolecular pathwayRoles

(1)p63Proliferation, self-renewal, development,
morphogenesis, tumorigenesis

(2)SRF/MALDifferentiation, development, cytoskeletal regulation

(3)mTORSenescence, cell size, tumorigenesis
oxidative stress [55]

(4)p75Apoptosis, communication, differentiation

(5)HippoOrgan size, antiproliferative, apoptosis
maintenance, antitumorigenic

(6)NotchDifferentiation, morphogenesis, suprabasal switch [56]

(7)FOXM1Proliferation, genome instability, tumorigenesis

(8)p38 MAPKProliferation, wound healing, differentiation, cell migration, invasivity, tumorigenesis [55]

(9)BMPProliferation, differentiation, plasticity, wound
healing

(10)TGFβProliferation, immortalization, tumorigenesis
[38, 4144]

(11)TGFαProliferation, hyperplasia, immortalization,
tumorigenesis

(12)EGFRProliferation, maintenance, tumorigenesis [5759]

(13)c-mycProliferation, differentiation, tumorigenesis

(14)ShhDevelopment, morphogenesis, proliferation
cell survival

(15)WntProliferation, self-renewal, wound healing, morphogenesis, tumorigenesis