5-FU	5-fluorouracil
ABC	ATP binding cassette
ABCB1	ABC sub-family B1; MDR1; P-gp
ABCB5	ABC sub-family B5
ABCC1	ABC sub-family C1
ABCC3	ABC sub-family C3
ABCG2	ABC sub-family G2; BCRP
ACC	Acetyl–CoA carboxylase
Akt	Protein kinase B
ALDH	Aldehyde dehydrogenase
AMPK	5′ adenosine monophosphate-activated protein kinase
BCRP	Breast cancer resistance protein; ABCG2
BCSCs	Breast cancer stem cells
BL1	Basal-like 1; TNBC subtype
BL2	Basal-like 2; TNBC subtype
CAFs	Cancer-associated fibroblasts
CCL2	Chemotactic protein 1
CSCs	Cancer stem cells
CTCs	Circulating tumor cells
CXCL7	Chemokine (C-X-C motif) ligand 7
CXCR1	Chemokine (C-X-C motif) receptor 1
DDIT4	DNA damage-inducible transcript 4
DICER	Double-stranded RNA specific endoribonuclease
DNMT	DNA-methyl transferase
DOX	Doxorubicin
DTCs	Disseminated tumor cells
DTX	Docetaxel
DVL3	Dishevelled 3
EGFR	Epidermal growth factor receptor
EMT	Epithelial-mesenchymal transition
Epi	Epirubicin
ER	Estrogen receptor
ERK	Extracellular signal-regulated kinase
FAC	5-FU, DOX and cyclophosphamide
FACS	Fluorescence activated cell sorter
FAK	Focal adhesion kinase
FEC	5-FU, epirubicin and cyclophosphamide
Gli	Glioma-associated oncogene homolog
GRP78	Glucose regulated protein 78
GSK-3β	Glycogen synthase kinase 3 beta
GST	Glutathione S-transferase
HER2	Human epidermal growth factor receptor 2
Hh	Hedgehog
HIF-1α/β	Hypoxia-inducible factor 1 alpha/beta
HMGB1	High-mobility group box 1
IC50	Half maximal inhibitory concentration
IGF-1	Insulin-like growth factor 1
IGF-1R	IGF-1 receptor
IL6/8	Interleukin 6/8
IM	Immunomodulatory; TNBC subtype
JAK	Janus kinase
KLF5	Krüppel-like factor 5
LAR	Luminal androgen receptor; TNBC subtype
M	Mesenchymal; TNBC subtype
MAPK	Mitogen activated protein kinase
MATE1/2	Multidrug and toxin extrusion protein 1 and 2
MCL1	Myeloid cell leukemia 1
MDR	Multi-drug resistance
MDR1	Multi-drug resistance protein 1; ABCB1; P-gp
MET	Mesenchymal-epithelial transition
miRNA	Micro-RNA
Mito	Mitomycin
MRP1	Multidrug resistance-associated protein 1; ABCC1
MSFE	Mammosphere forming efficiency
MSL	Mesenchymal stem-like; TNBC subtype
mTOR	Mammalian target of rapamycin
NF-κB	Nuclear factor-kappa B
NOD	Non-obese diabetic
NRF2	Nuclear erythroid-related factor 2
O-CMC	O-carboxymethyl chitosan
OCT1/2/3	Organic cation transporters 1, 2 and 3
OS	Overall survival
P-gp	P-glycoprotein; ABCB1; MDR1
PARP1	Poly (ADP-ribose) polymerase 1
PDGF-B	Platelet-derived growth factor B
PERK	Protein kinase RNA-like endoplasmic reticulum kinase
PFS	Progression free survival
PHGDH	Phosphoglycerate dehydrogenase
PI3K	Phosphatidylinositol-3-kinase
PKA	Protein kinase A
PLGA-PEG	Poly (lactic acid-co-glycolic acid)-polyethylene glycol
PMAT	Plasma membrane monoamine transporter
PR	Progesterone receptor
Ptch	Patched; Hh ligand receptor
PTX	Paclitaxel
RAD51	RecA homolog DNA repair recombinase
RANK-L	Receptor activator of nuclear factor-kappa B ligand
REDD1	Regulated DNA damage 1
RFS	Recurrence-free survival
SCID	Severe combined immunodeficiency
SHh	Sonic Hh
SMAD	Sma-and mothers against decapentaplegic homolog
Smo	Smoothened; Hh ligand co-receptor
SOX2	Sex determining region Y box transcription factor 2
STAT3	Signal transducer and activator of transcription 3
TAMs	Tumor associated macrophages
TFF1	Trefoil factor 1/protein pS2
TGFβ	Transforming growth factor beta
TNBCs	Triple negative breast cancers
TNFα	Tumor necrosis factor alpha
XIAP	X-linked inhibitor of apoptosis