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Paclitaxel-Trastuzumab Mixed Nanovehicle to Target HER2-Overexpressing Tumors

Departamento de Ingeniería Química y Textil, Facultad de Ciencias Químicas, Universidad de Salamanca, 37008 Salamanca, Spain
Instituto de Biología Molecular y Celular del Cáncer (IBMCC), CSIC, CIBERONC-IBSAL, 37007 Salamanca, Spain
Author to whom correspondence should be addressed.
Nanomaterials 2019, 9(7), 948;
Received: 10 June 2019 / Revised: 26 June 2019 / Accepted: 28 June 2019 / Published: 29 June 2019
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Paclitaxel is one of the most widely used chemotherapeutic agents thanks to its effectiveness and broad spectrum of antitumor activity. However, it has a very poor aqueous solubility and a limited specificity. To solve these handicaps, a novel paclitaxel-trastuzumab targeted transport nanosystem has been developed and characterized in this work to specifically treat cancer cells that overexpress the human epidermal growth factor receptor-2 (HER2). Methods: Alginate and piperazine nanoparticles were synthetized and conjugated with paclitaxel:β-cyclodextrins complexes and trastuzumab. Conjugated nanoparticles (300 nm) were characterized and their internalization in HER2-overexpressing tumor cells was analyzed by immunofluorescence. Its specific antitumor activity was studied in vitro using human cell lines with different levels of HER2-expression. Results: In comparison with free paclitaxel:β-cyclodextrins complexes, the developed conjugated nanovehicle presented specificity for the treatment of HER2-overpressing cells, in which it was internalized by endocytosis. Conclusions: It seems that potentially avoiding the conventional adverse effects of paclitaxel treatment could be possible with the use of the proposed mixed nanovehicle, which improves its bioavailability and targets HER2-positive cancer cells. View Full-Text
Keywords: targeted nanoparticles; paclitaxel; trastuzumab; HER2-specificity; sodium alginate; piperazine targeted nanoparticles; paclitaxel; trastuzumab; HER2-specificity; sodium alginate; piperazine

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Nieto, C.; Centa, A.; Rodríguez-Rodríguez, J.A.; Pandiella, A.; Martín del Valle, E.M. Paclitaxel-Trastuzumab Mixed Nanovehicle to Target HER2-Overexpressing Tumors. Nanomaterials 2019, 9, 948.

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