siRNA	Small Interfering Ribonucleic Acid
mRNA	Messenger Ribonucleic Acid
QABCDPS	Quaternary ammonium β-cyclodextrin polymer
PEI	Polyethylenimine
PA-polymer	β-cyclodextrin polymer functionalized with primary amine groups
GAPDH	Glyceraldehyde 3-phosphate dehydrogenase
GFP	Green fluorescent protein
Caco-2	Caco-2 intestinal epithelial cell line
HeLa	HeLa human cervix epithelioid carcinoma cell
DMEM	Dulbecco’s modified Eagle’s medium
MTT assay	3-(4,5-dimethylthiazolyl-2)-2,5-diphenyltetrazolium bromide assay
NP	Nitrogen/phosphate ratio
DLS	Dynamic light scattering
ZP	Zeta potential
TAE buffer	Tris base, acetic acid and ethylenediaminetetraacetic acid buffer
HBSS	Hank’s Balanced Salt Solution
DAPI	4′,6-diamidino-2-phenylindole