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Apoferritin-encapsulated PbS quantum dots significantly inhibit growth of colorectal carcinoma cells

Bradshaw, Tracey D.; Junor, Marc; Patanè, Amalia; Clarke, Phil; Thomas, Neil R.; Li, Mei; Mann, Stephen; Turyanska, Lyudmila


Marc Junor

Phil Clarke

Professor of Medicinal and Biological Chemistry

Mei Li

Stephen Mann


Colorectal carcinoma (CRC) is the 3rd most common cancer worldwide, thus development of novel therapeutic strategies is imperative. Herein potent, selective dose-dependent antitumor activity of horse spleen apoferritin encapsulated PbS quantum dots (AFt-PbS) against two human-derived colorectal carcinoma cell lines is reported (GI50 ∼ 70 μg mL-1). Following in vitro exposure to AFt-PbS, CRC cells fail to recover proliferative capacity, and undergo apoptosis triggered by the generation of reactive oxygen species (ROS). In stark contrast, the AFt-PbS nanocomposites do not affect the growth and cell cycle of non-tumor human microvessel endothelial HMEC-1 cells (GI50 > 500 μg mL -1). In vivo, AFt-PbS QDs are well tolerated by mice. Neither adverse health nor behavioral indicators were observed throughout the 15 day study. The photoluminescence of AFt-PbS combined with selective antitumor activity offer potential development of AFt-PbS for simultaneous non-invasive imaging and treatment of malignant tissue. © The Royal Society of Chemistry.


Bradshaw, T. D., Junor, M., Patanè, A., Clarke, P., Thomas, N. R., Li, M., …Turyanska, L. (2013). Apoferritin-encapsulated PbS quantum dots significantly inhibit growth of colorectal carcinoma cells. Journal of Materials Chemistry B, 45, 6254-6260.

Journal Article Type Article
Acceptance Date Oct 8, 2013
Publication Date Dec 7, 2013
Deposit Date Feb 21, 2020
Journal Journal of Materials Chemistry B
Print ISSN 2050-750X
Electronic ISSN 2050-7518
Publisher Royal Society of Chemistry
Peer Reviewed Peer Reviewed
Volume 45
Pages 6254-6260
Keywords General Materials Science; General Chemistry; Biomedical Engineering; General Medicine
Public URL
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