Table 2.

IC₅₀ values of different drug groups against different TNBC cells.

Cell lines	IC50 (µg/mL)
	5-FU	PTX	5-FU/PTX	5-FU/PTX Lps	KLA-5-FU/PTX Lps
MDA-MB-231	7.66 ± 0.54	5.17 ± 0.51	2.97 ± 0.47	1.62 ± 0.23	0.85 ± 0.07
MDA-MB-453	9.54 ± 0.76	8.10 ± 0.74	4.44 ± 0.66	2.47 ± 0.12	2.10 ± 0.04
MDA-MB-436	6.24 ± 0.69	5.35 ± 0.72	2.14 ± 0.18	1.64 ± 0.15	1.24 ± 0.06

All preparations were tested in triplicate. IC₅₀, half-maximal inhibitory concentration. 5-FU, 5-fluorouracil; PTX, paclitaxel; 5-FU/PTX, mechanically mixed free 5-FU and free PTX; 5-FU/PTX Lps, unmodified liposomes co-loaded with 5-FU and PTX; KLA-5-FU/PTX Lps, KLA-modified liposomes co-loaded with 5-FU and PTX.