| SAM | S-adenosyl-methionine |
| TME | Tumor microenvironment |
| MATs | Methionine adenosyltransferases |
| SAH | S-Adenosylhomocysteine |
| 5-MTHF | 5-methyltetrahydrofolate |
| MTA | Methylthioadenosine |
| MTAP | Methylthioadenosine phosphorylase |
| 5,10-MTHF | 5,10-methylene tetrahydrofolate |
| mTORC1 | Mechanistic target of rapamycin complex 1 |
| DNMTs | DNA methyltransferases |
| CpG | Cytosine–phosphate–guanine |
| DAPK1 | Death-associated protein kinase 1 |
| PUMA | P53 upregulated modulator of apoptosis |
| BNIP3 | BCL2 interacting protein 3 |
| lncRNA | Long non-coding RNA |
| PET | Positron emission tomography |
| WTAP | Wilms tumor 1-associated protein |
| SLC | Solute carriers |
| PD-L1 | Programmed cell death ligand 1 |
| VISTA | V-domain immunoglobulin suppressor of T cell activation |
| ATAD2 | ATPase family AAA domain-containing protein 2 |
| PRMT | Protein arginine methyltransferase |
| ACSL3 | Acyl-CoA synthetase long chain family member 3 |
| TNBC | Triple-negative breast cancer |
| PARP | Poly (ADP-ribose) polymerase |
| CSCs | Tumor stem cells |
| ROS | Reactive oxygen species |
| MCR | Methionine/cystine restriction |
| CHAC1 | Cation transport regulator homolog 1 |
| MR | Methionine restriction |
| MAPK14 | Mitogen-activated protein kinase P38 |
| MK2 | MAPK-activated protein kinase 2 |
| GSH | Glutathione |
| NF-κB | Nuclear factor kappa B |
| PD-1 | Programmed cell death protein 1 |
| CAR-T | Chimeric antigen receptor T-cell |
| cGAS | Cyclic GMP-AMP synthase |
| UHRF1 | Ubiquitin-like with plant homeodomain and RING finger domains 1 |
| STING | Stimulator of interferon genes |
| MGL | Methionine γ lyase |
| hCGL | Human enzyme cystathionine-γ-lyase |
| MRD | Methionine restriction diet |
| rMETase | Recombinant methioninase |