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ORIGINAL ARTICLE

Enhanced cellular internalization of CdTe quantum dots mediated by arginine- and tryptophan-rich cell-penetrating peptides as efficient carriers

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Pages 1424-1428 | Received 09 Mar 2015, Accepted 17 Mar 2015, Published online: 17 Apr 2015

Figures & data

Figure 1. (A) UV–Vis absorption spectra of CdTe QDs (B) Fluorescence spectrum of CdTe QDs.

Figure 1. (A) UV–Vis absorption spectra of CdTe QDs (B) Fluorescence spectrum of CdTe QDs.

Figure 2. Zeta potential of QD (red) and (A) QD–R9 (B) QD–R5W3R4 and (C) QD–[RW]4. Each of the QD–CPP conjugates is shown in blue.

Figure 2. Zeta potential of QD (red) and (A) QD–R9 (B) QD–R5W3R4 and (C) QD–[RW]4. Each of the QD–CPP conjugates is shown in blue.

Figure 3. Cell viability of QD–CPP. A549 cells were treated with QD–CPP complexes (1/40 ratio) for 24 h. The concentrations of QDs used were 25, 50, 100, 200, and 250 nM.

Figure 3. Cell viability of QD–CPP. A549 cells were treated with QD–CPP complexes (1/40 ratio) for 24 h. The concentrations of QDs used were 25, 50, 100, 200, and 250 nM.

Figure 4. Images of cellular uptake of QD–CPP complexes. Cells were treated with 100 and 250 nM of QDs, or QD–R9, QD–R5W3R4 and QD–[RW]4 mixture (1/40).

Figure 4. Images of cellular uptake of QD–CPP complexes. Cells were treated with 100 and 250 nM of QDs, or QD–R9, QD–R5W3R4 and QD–[RW]4 mixture (1/40).

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