Abbreviations	Full names
α-SMA	α smooth muscle actin
ALA	5-aminolevulinic acid
BD	Bowen’s Disease
CAFs	Cancer-associated Fibroblasts
CM	Conditioned Medium
cSCC	Cutaneous squamous cell carcinoma
DHF-DA	Dihydro-fluorescein diacetate
DMEM	Dulbecco’s modified Eagle’s medium
ECM	Extracellular Matrix
EMT	Epithelium-to-mesenchymal transition
FBS	Fetal Bovine Serum
HO-1	Heme oxygenase-1
IF	Indirect Immunofluorescence
MAL	Methyl 5-aminolevulinate
PDT	Photodynamic therapy
PpIX	Protoporphirin IX
R-BD	Resistant to PDT Bowen Disease
SBE	Small Binding Elements
TGFβ1	Transforming growth factor β1
TβRII	TGFβ1 type II receptor
TβRI	TGFβ1 type I receptor
TME	Tumor microenvironment
WB	Western blot