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. 2019 Aug 14;14:6519–6538. doi: 10.2147/IJN.S215250

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© 2019 Zhao et al.

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Flow cytometry measurement of the cellular uptake of different formulations against 4T1 cells (A, B) and HepG2 cells (C, D). *P<0.05, **P<0.01, and ***P<0.001.

Abbreviations: FPCPNDs, FA-PEG-CCTS/PEI/NLS/pDNA; PND, PEI/NLS/pDNA; PDs, PEI/pDNA; PCPNDs, PEG-CCTS/PEI/NLS/pDNA; CPNDs, CCTS/PEI/NLS/pDNA; FA, folate acid; PEG, polyethylene glycol; CCTS, carboxylated chitosan; PEI, polyethyleneimine; NLS, nuclear localization sequences; FITC, fluorescein isothiocyanate; n.s., not significant.