CdTe quantum dots (QDs) capped with two relevant biological thiols, glutathione (GSH) or cysteine (Cys) were synthesized in aqueous solution using CdCl2, K2TeO3 and NaBH4 and their chemical, spectroscopic and biocompatibility properties were assessed. Synthesized nanoparticles (NPs) are 3-6 nm in diameter, with emission spectra between 480-580 nm depending on QDs size, and emission quantum yields between 0.35-0.65. The toxicity of thiol-capped CdTe NPs to different bacterial strains was determined. Increased biocompatibility for Cys-capped QDs was observed. In addition, QDs uptake by eukaryotic cells was evaluated by fluorescence microscopy. CdTe-GSH NPs were incorporated into MKN45 cells only in the presence of lipofectamine. On the other hand, although CdTe-Cys NPs were freely incorporated into these cells, the amount of incorporation as well as the number of fluorescent cells was lower than that observed with GSH-capped QDs. Finally, no significant changes in cell morphology as a consequence of GSH- or Cys-capped QDs incorporation were observed. Summarizing, our results indicate that the as-synthesized GSH- and Cys-capped QDs display differential spectroscopic properties and cellular interactions, being CdTe-Cys more biocompatible than CdTe-GSH NPs.
机构:
Chinese Acad Sci, Grad Sch, Chinese Acad Sci, Changchun Inst Appl Chem,State Key Lab Electroana, Jilin 130022, Peoples R ChinaChinese Acad Sci, Grad Sch, Chinese Acad Sci, Changchun Inst Appl Chem,State Key Lab Electroana, Jilin 130022, Peoples R China
Bao, HF
;
Wang, EK
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Chinese Acad Sci, Grad Sch, Chinese Acad Sci, Changchun Inst Appl Chem,State Key Lab Electroana, Jilin 130022, Peoples R ChinaChinese Acad Sci, Grad Sch, Chinese Acad Sci, Changchun Inst Appl Chem,State Key Lab Electroana, Jilin 130022, Peoples R China
Wang, EK
;
Dong, SJ
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Chinese Acad Sci, Grad Sch, Chinese Acad Sci, Changchun Inst Appl Chem,State Key Lab Electroana, Jilin 130022, Peoples R ChinaChinese Acad Sci, Grad Sch, Chinese Acad Sci, Changchun Inst Appl Chem,State Key Lab Electroana, Jilin 130022, Peoples R China
机构:
Nanjing Univ Aeronaut & Astronaut, Coll Mat Sci & Technol, Nanjing 210016, Peoples R ChinaNanjing Univ Aeronaut & Astronaut, Coll Mat Sci & Technol, Nanjing 210016, Peoples R China
Chang, Shu-quan
;
Dai, Yao-dong
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Nanjing Univ Aeronaut & Astronaut, Coll Mat Sci & Technol, Nanjing 210016, Peoples R ChinaNanjing Univ Aeronaut & Astronaut, Coll Mat Sci & Technol, Nanjing 210016, Peoples R China
Dai, Yao-dong
;
Kang, Bin
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Nanjing Univ Aeronaut & Astronaut, Coll Mat Sci & Technol, Nanjing 210016, Peoples R ChinaNanjing Univ Aeronaut & Astronaut, Coll Mat Sci & Technol, Nanjing 210016, Peoples R China
Kang, Bin
;
Han, Wei
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Nanjing Univ Aeronaut & Astronaut, Coll Mat Sci & Technol, Nanjing 210016, Peoples R ChinaNanjing Univ Aeronaut & Astronaut, Coll Mat Sci & Technol, Nanjing 210016, Peoples R China
Han, Wei
;
Mao, Ling
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Chinese Ctr Dis Control & Prevent, Natl Inst Radiol Protect, Beijing 100088, Peoples R ChinaNanjing Univ Aeronaut & Astronaut, Coll Mat Sci & Technol, Nanjing 210016, Peoples R China
Mao, Ling
;
Chen, Da
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Nanjing Univ Aeronaut & Astronaut, Coll Mat Sci & Technol, Nanjing 210016, Peoples R ChinaNanjing Univ Aeronaut & Astronaut, Coll Mat Sci & Technol, Nanjing 210016, Peoples R China
机构:
Chinese Acad Sci, Grad Sch, Chinese Acad Sci, Changchun Inst Appl Chem,State Key Lab Electroana, Jilin 130022, Peoples R ChinaChinese Acad Sci, Grad Sch, Chinese Acad Sci, Changchun Inst Appl Chem,State Key Lab Electroana, Jilin 130022, Peoples R China
Bao, HF
;
Wang, EK
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Chinese Acad Sci, Grad Sch, Chinese Acad Sci, Changchun Inst Appl Chem,State Key Lab Electroana, Jilin 130022, Peoples R ChinaChinese Acad Sci, Grad Sch, Chinese Acad Sci, Changchun Inst Appl Chem,State Key Lab Electroana, Jilin 130022, Peoples R China
Wang, EK
;
Dong, SJ
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机构:
Chinese Acad Sci, Grad Sch, Chinese Acad Sci, Changchun Inst Appl Chem,State Key Lab Electroana, Jilin 130022, Peoples R ChinaChinese Acad Sci, Grad Sch, Chinese Acad Sci, Changchun Inst Appl Chem,State Key Lab Electroana, Jilin 130022, Peoples R China
机构:
Nanjing Univ Aeronaut & Astronaut, Coll Mat Sci & Technol, Nanjing 210016, Peoples R ChinaNanjing Univ Aeronaut & Astronaut, Coll Mat Sci & Technol, Nanjing 210016, Peoples R China
Chang, Shu-quan
;
Dai, Yao-dong
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Nanjing Univ Aeronaut & Astronaut, Coll Mat Sci & Technol, Nanjing 210016, Peoples R ChinaNanjing Univ Aeronaut & Astronaut, Coll Mat Sci & Technol, Nanjing 210016, Peoples R China
Dai, Yao-dong
;
Kang, Bin
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h-index: 0
机构:
Nanjing Univ Aeronaut & Astronaut, Coll Mat Sci & Technol, Nanjing 210016, Peoples R ChinaNanjing Univ Aeronaut & Astronaut, Coll Mat Sci & Technol, Nanjing 210016, Peoples R China
Kang, Bin
;
Han, Wei
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Nanjing Univ Aeronaut & Astronaut, Coll Mat Sci & Technol, Nanjing 210016, Peoples R ChinaNanjing Univ Aeronaut & Astronaut, Coll Mat Sci & Technol, Nanjing 210016, Peoples R China
Han, Wei
;
Mao, Ling
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h-index: 0
机构:
Chinese Ctr Dis Control & Prevent, Natl Inst Radiol Protect, Beijing 100088, Peoples R ChinaNanjing Univ Aeronaut & Astronaut, Coll Mat Sci & Technol, Nanjing 210016, Peoples R China
Mao, Ling
;
Chen, Da
论文数: 0引用数: 0
h-index: 0
机构:
Nanjing Univ Aeronaut & Astronaut, Coll Mat Sci & Technol, Nanjing 210016, Peoples R ChinaNanjing Univ Aeronaut & Astronaut, Coll Mat Sci & Technol, Nanjing 210016, Peoples R China