5-FU	5-Fluorouracil
α-SMA	Alpha Smooth Muscle Actin
ATP	Adenosine Triphosphate
BSA	Bovine Serum Albumin
CL	Cardiolipin
CIM	Chemotherapy-induced Mucositis
COX IV	Cytochrome c Oxidase Subunit IV
DAPI	4′,6-Diamidino-2-Phenylindole
DMEM	Dulbecco’s Modified Eagle Medium
DNA	Deoxyribonucleic Acid
EC50	Half-Maximal Effective Concentration
ELISA	Enzyme-Linked Immunosorbent Assay
EMT	Epithelial–Mesenchymal Transition
ETC	Electron Transport Chain
FBS	Fetal Bovine Serum
GI	Gastrointestinal
H&E	Hematoxylin and Eosin
HEPES	4-(2-Hydroxyethyl)-1-Piperazineethanesulfonic Acid
HOK-16B	Human Oral Keratinocyte-16B
hTERT	Human Telomerase Reverse Transcriptase
IF	Immunofluorescence
IL-1β	Interleukin-1 Beta
IL-6	Interleukin-6
i.p.	Intraperitoneal
i.v.	Intravenous
MAPK	Mitogen-Activated Protein Kinase
MOMA-2	Monocyte/Macrophage Antigen-2
mtROS	Mitochondrial Reactive Oxygen Species
NF-κB	Nuclear Factor Kappa-B
NHOK	Normal Human Oral Keratinocytes
NDUFS1	NADH Dehydrogenase Fe-S Protein 1
PBS	Phosphate-Buffered Saline
PC	Phosphatidylcholine
PCNA	Proliferating Cell Nuclear Antigen
PFA	Paraformaldehyde
PI(4,5)P2	Phosphatidylinositol-4,5-bisphosphate
ROS	Reactive Oxygen Species
SCC-17B	Squamous Cell Carcinoma Cell Line-17B
SDHB	Succinate Dehydrogenase Complex Iron Sulfur B
TB	Toluidine Blue
TGF-β	Transforming Growth Factor Beta
TMB	3,3′,5,5′-Tetramethylbenzidine
TNF-α	Tumor Necrosis Factor Alpha
TUNEL	Terminal Deoxynucleotide Transferase-Mediated dUTP Nick End Labeling
UQCRFS1	Ubiquinol-Cytochrome c Reductase, Rieske Iron-Sulfur Polypeptide 1
WBC	White Blood Cells
SE	Standard error