Copyright
©The Author(s) 2020.
World J Clin Oncol. Apr 24, 2020; 11(4): 169-179
Published online Apr 24, 2020. doi: 10.5306/wjco.v11.i4.169
Published online Apr 24, 2020. doi: 10.5306/wjco.v11.i4.169
Table 1 Pre-clinical studies targeting the cell-surface of triple negative breast cancer
Gene, Protein | Protein type and function1 | TNBC expression2 | Normal tissue expression | Drug3 | Studies4 | Ref. |
ANTXR1 (TEM8), Anthrax toxin receptor 1 | SPT1MP, integrin-like; Attachment, migration, progression | Protein, n = 23, 100% stromal; very low in surrounding NB. Protein, BC tissues, n = 120, NB, n = 33, increased in invasive BC | 6High: Gallbladder; Medium and low: Broadly expressed | CAR-T | Xenograft regression | [34-36] |
ICAM1, Intercellular adhesion molecule-1 | SPT1MP; Binds leukocyte adhesion protein LFA-1 (integrin αL/β2) | mRNA, n = 6 (cell lines), 60%; BC 25%. Protein, n = 6 (cell lines), increased expression | 5High: Lung, kidney. Medium: Bone marrow and immune system, endometrium. Low: Cerebral cortex, colon, bladder, testis, fallopian tube | mAb: Enlimomab (murine mAb against the human ICAM1); TLipo: Lipocalin-2 siRNA payload | CAM assay; decreased xenograft angiogenesis | [37,38] |
MELK, Maternal embryonic leucine zipper kinase | PMP, serine/threonine kinase. Cell cycle regulation, stem-cell self-renewal, apoptosis, splicing regulation, radiation resistance | mRNA, n = 59, increased relative to BC, n = 284 and NB (n = 105) | 5High and medium: Broadly expressed | Ib: OTSSP167 | Ib + radiation decreased xenograft growth | [39,40] |
FZD7, Frizzled-7 | MPMP, Wnt protein receptor. Possibly signals polarity during morphogenesis, differentiation | mRNA, n = 5, increased relative to BC, n = 14 | 5High and medium: Broadly expressed | shRNA against FZD7 | Decreased xenograft growth | [41] |
MMP14, Matrix metallo-proteinase-14 | SPT1MP, Endopeptidase. Degrades extracellular matrix | ND, general increased in metastatic cancers | 5Medium and low: Broadly expressed | Humanized Fab Ab | Decreased progression and metastasis of syngeneic tumors | [42] |
MSLN, Mesothelin | Cell surface GPI anchor, secreted. Cell adhesion | Protein, n = 109, 34%. Protein, n = 99, 67% mRNA, n = 226, increased relative to BC, n-88 | 6Broadly very low to non-expressed. 7120 organs: (1) Lung, mesothelial cells, uterus; (2) Low in heart, kidney and placenta | ADC: RG7787, Ab fragment/pseudomonas exotoxin A. CAR-T (TNBC not tested) | Xenograft regression | [43-47] |
GBP1, Guanylate-binding protein 1 | Cell surface lipid anchor, secreted. Hydrolyzes GTP to GMP. Host protection against pathogens | mRNA, n = 1512, increased relative to BC, n = 1412 and NB, n = 3887 | 5Medium: Thyroid, appendix, small intestine. Low: Brain, tonsil, lung, GI tract, kidney, fallopian tube, endometrium, skin | None | Expression controlled by EGFR. Knockdown decreased cell growth | [48] |
MST1R, Macrophage-stimulating protein receptor (RON) | SPT1MP, tyrosine kinase receptor. MST1 ligand. Proliferation, survival, migration, differentiation | Protein, n = 168, 77% expression and 45% overexpression | 5High: Thyroid, lung, gallbladder, ovary, placenta. Medium: Broadly expressed | ADC: Zt/g4- MMAE (hAb from murine mAb conjugated to MMAE) | Xenograft regression | [49,50] |
MUC1, Mucin-1 | SPT1MP, extracellular or secreted. Adhesion, protective layer, progression, genotoxic stress response | Protein, n = 52, 94% | 5High: Lung, gallbladder, GI tract, female tissues. Medium and low: Adrenal gland, bone marrow and immune, kidney, bladder, male tissues, skin | ADC: mAb-MMAE | PDX regression | [51,52] |
CDCP1,CUB domain-containing protein 1 | SPMP. Anchorage, migration, proliferation, differentiation | Protein, n = 100, 57% | 5Medium and low: Broadly expressed | Ib: Glyco-conjugated palladium complex (Pd-Oqn) | Decreased metastasis | [53-56] |
PIM1, Serine/threonine-protein kinase pim-1 | Isoform 2: Cell surface, serine/threonine kinase. Proto-oncogene. Survival, proliferation, apoptosis | mRNA, n = 123, increased relative to BC, n = 647 | 5Low: Broadly expressed | Ib: AZD1208, PIM kinase inhibitors | Stopped PDX growth; increased MYC expression; MYC-driven GEMM | [57-59] |
NECTIN4, Nectin-4 | SPT1MP. Cell adhesion | mRNA, n = 1175, 61%. Protein, n = 61, 62%; NB, n = 2, 0%; ON, n = 30, 0% | 5Medium: Tonsil, oral mucosa, esophagus, bladder, breast, placenta, skin. Low: Pancreas, kidney, female and male tissues | ADC: hAb-MMAE | Rapid, complete, durable responses in PDXs | [60] |
GPR55, G-protein coupled receptor 55 | MPMP, LPI receptor | Protein, n = 27, 82% | 6Broadly expressed, higher levels in bone marrow and immune system, lung, gall bladder, GI tract, bladder, female and male tissues. 772 organs, leukocyte, brain, bone | shRNA against GPR55 | Decreased xenograft growth | [61] |
LRP8, Low-density lipoprotein receptor-related protein 8 | SPT1MP, reelin and apolipoprotein E receptor | mRNA, METABRIC data set, increased relative to BC | 5High: Testis. Low: Placenta | siRNA against LRP8; shRNA against LRP8: Inducible | Knockdown in cells. Decreased tumorigenesis via Wnt signaling inhibition | [62,63] |
- Citation: Tafreshi NK, Morse DL, Lee MC. Narrowing the focus: Therapeutic cell surface targets for refractory triple-negative breast cancer. World J Clin Oncol 2020; 11(4): 169-179
- URL: https://www.wjgnet.com/2218-4333/full/v11/i4/169.htm
- DOI: https://dx.doi.org/10.5306/wjco.v11.i4.169