| 3-PG | 3-phosphoglycerate |
| ADP | Adenosine Diphosphate |
| ATCC | American Type Cell Culture Collection |
| ATF4 | Activating Transcription Factor 4 |
| ATP | Adenosine Triphosphate |
| BrdU | Bromodeoxyuridine |
| Cal 27 | Human Tongue Squamous Carcinoma |
| Detroit 562 | Human Metastatic Pharyngeal Cancer |
| DMEM | Dulbecco’s Modified Eagle’s Medium |
| DMSO | Dimethyl Sulfoxide |
| DNA | Deoxyribonucleic Acid |
| EDTA | Ethylenediaminetetraacetic Acid |
| EtdBr | Ethidium Bromide |
| FaDu | Human Hypopharyngeal Squamous Carcinoma |
| FBP | Fructose-1,6-bisphosphate |
| FBS | Fetal Bovine Serum |
| GAPDH | Glyceraldehyde-3-Phosphate Dehydrogenase |
| GCN2-ATF4 | General Control Nonderepressible 2-activating Transcription Factor 4 |
| gDNA | Genomic DNA |
| GSH | Glutathione |
| HIF-1α | Hypoxia-Inducible Factor, Alpha Subunit |
| HMBS | Hydroxymethylbilane Synthase |
| HNSCC | Head and Neck Squamous Cell Cancer |
| HT-29 | Colorectal Adenocarcinoma |
| IL-6 | Interleukin 6 |
| mTOR | Mammalian Target of Rapamycin |
| MTT | Methylthiazolyldiphenyl-tetrazolium bromide |
| NADH | Nicotinamide Adenine Dinucleotide |
| NLS | Nuclear Localisation Signal |
| NRF2 | Nuclear Factor (Erythroid-Derived 2)-Like 2 |
| PCR | Polymerase Chain Reaction |
| PEP | Phosphoenolpyruvate |
| PHGDH | Phosphoglycerate Dehydrogenase |
| PI3K | Phosphoinositide 3-kinase |
| PKM | Pyruvate Kinase M1/2 |
| PPIA | Peptidylprolyl Isomerase A |
| PPP | Pentose Phosphate Pathway |
| PSAT1 | Phosphoserine Aminotransferase 1 |
| PSPH | Phosphoserine Phosphatase |
| P-STAT3 | Phospho-Signal Transducer and Activator of Transcription 3 |
| RFLP | Restriction Fragment Length Polymorphism |
| RNA | Ribonucleic Acid |
| RT-qPCR | Quantitative Reverse Transcription Polymerase Chain Reaction |
| SHMT2 | Serine Hydroxymethyltransferase 2 |
| STAT3 | Signal Transducer and Activator of Transcription 3 |
| TBP | TATA-Box Binding Protein |
| TBS | Tris-Buffered Saline |
| TBST | Tris Buffered Saline with Tween-20 |
| TMB | 3,3′,5,5′- tetramethyl-benzidine diimine |